diff --git a/configure b/configure index 431fa5bf7a464..3d830be10ff1d 100755 --- a/configure +++ b/configure @@ -3687,6 +3687,7 @@ frei0r_filter_deps="frei0r" frei0r_src_filter_deps="frei0r" fspp_filter_deps="gpl" gblur_vulkan_filter_deps="vulkan spirv_compiler" +graphicsub2text_filter_deps="libtesseract" hflip_vulkan_filter_deps="vulkan spirv_compiler" histeq_filter_deps="gpl" hqdn3d_filter_deps="gpl" @@ -3716,6 +3717,7 @@ overlay_qsv_filter_deps="libmfx" overlay_qsv_filter_select="qsvvpp" overlay_vaapi_filter_deps="vaapi VAProcPipelineCaps_blend_flags" overlay_vulkan_filter_deps="vulkan spirv_compiler" +overlaytextsubs_filter_deps="avcodec libass" owdenoise_filter_deps="gpl" pad_opencl_filter_deps="opencl" pan_filter_deps="swresample" @@ -3752,9 +3754,13 @@ spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp" sr_filter_deps="avformat swscale" sr_filter_select="dnn" stereo3d_filter_deps="gpl" +splitcc_filter_deps="avcodec" +subscale_filter_deps="swscale avcodec" subtitles_filter_deps="avformat avcodec libass" super2xsai_filter_deps="gpl" pixfmts_super2xsai_test_deps="super2xsai_filter" +text2graphicsub_filter_deps="avformat avcodec libass" +textsub2video_filter_deps="avcodec libass" tinterlace_filter_deps="gpl" tinterlace_merge_test_deps="tinterlace_filter" tinterlace_pad_test_deps="tinterlace_filter" @@ -3836,7 +3842,7 @@ avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi # programs ffmpeg_deps="avcodec avfilter avformat threads" ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter - hflip_filter null_filter + snull_filter strim_filter hflip_filter null_filter transpose_filter trim_filter vflip_filter" ffmpeg_suggest="ole32 psapi shell32" ffplay_deps="avcodec avformat swscale swresample sdl2" @@ -7954,7 +7960,7 @@ print_enabled_components(){ fi done if [ "$name" = "filter_list" ]; then - for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do + for c in asrc_abuffer vsrc_buffer ssrc_sbuffer asink_abuffer vsink_buffer ssink_sbuffer; do printf " &ff_%s,\n" $c >> $TMPH done fi diff --git a/doc/filters.texi b/doc/filters.texi index bcd19cf931080..ebd398386b1cd 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -27364,6 +27364,813 @@ tools. @c man end VIDEO SINKS +@chapter Subtitle Filters +@c man begin SUBTITLE FILTERS + +When you configure your FFmpeg build, you can disable any of the +existing filters using @code{--disable-filters}. + +Below is a description of the currently available subtitle filters. + + +@section censor + +Censor selected words in text subtitles. + +Inputs: +@itemize +@item 0: Subtitles[TEXT] +@end itemize + +Outputs: +@itemize +@item 0: Subtitles[TEXT] +@end itemize + +It accepts the following parameters: + +@table @option +@item mode +The censoring mode to apply. + +Supported censoring modes are: + +@table @var +@item 0, keep_first_last +Replace all characters with the 'censor_char' except the first and the last character of a word. +For words with less than 4 characters, the last character will be replaced as well. +For words with less than 3 characters, the first character will be replaced as well. +@item 1, keep_first +Replace all characters with the 'censor_char' except the first character of a word. +For words with less than 3 characters, the first character will be replaced as well. +@item 2, all +Replace all characters with the 'censor_char'. +@end table + +@item words +A list of words to censor, separated by 'separator'. + +@item words_file +Specify a file from which to load the contents for the 'words' parameter. + +@item censor_char +Single character used as replacement for censoring. + +@item separator +Delimiter character for words. Used with replace_words and remove_words- Must be a single character. +The default is '.'. + +@end table + +@subsection Examples + +@itemize +@item +Censor a few given words with a pound character. +@example +ffmpeg -i "http://streams.videolan.org/samples/sub/SSA/subtitle_testing_complex.mkv" -filter_complex "[0:1]censor=words='diss,louder,hope,beam,word':censor_char='#'" -map 0 -y output.mkv +@end example +@end itemize + +@section stripstyles + +Remove all inline styles from subtitle events. + +Inputs: +@itemize +@item 0: Subtitles[TEXT] +@end itemize + +Outputs: +@itemize +@item 0: Subtitles[TEXT] +@end itemize + +It accepts the following parameters: + +@table @option +@item remove_animated +Also remove text which is subject to animation (default: true) +Usually, animated text elements are used used in addition to static subtitle lines for creating effects, so in most cases it is safe to remove the animation content. +If subtitle text is missing, try setting this to false. + +@item select_layer +Process only ASS subtitle events from a specific layer. This allows to filter out certain effects where an ASS author duplicates the text onto multiple layers. + +@end table + +@subsection Examples + +@itemize +@item +Remove styles and animations from ASS subtitles and output events from ass layer 0 only. Then convert asn save as SRT stream: +@example +ffmpeg -i "https://streams.videolan.org/samples/sub/SSA/subtitle_testing_complex.mkv" -filter_complex "[0:1]stripstyles=select_layer=0" -map 0 -c:s srt output.mkv +@end example +@end itemize + + +@section textmod + +Modify subtitle text in a number of ways. + +Inputs: +@itemize +@item 0: Subtitles[TEXT] +@end itemize + +Outputs: +@itemize +@item 0: Subtitles[TEXT] +@end itemize + +It accepts the following parameters: + +@table @option +@item mode +The kind of text modification to apply + +Supported operation modes are: + +@table @var +@item 0, leet +Convert subtitle text to 'leet speak'. It's primarily useful for testing as the modification will be visible with almost all text lines. +@item 1, to_upper +Change all text to upper case. Might improve readability. +@item 2, to_lower +Change all text to lower case. +@item 3, replace_chars +Replace one or more characters. Requires the find and replace parameters to be specified. +Both need to be equal in length. +The first char in find is replaced by the first char in replace, same for all subsequent chars. +@item 4, remove_chars +Remove certain characters. Requires the find parameter to be specified. +All chars in the find parameter string will be removed from all subtitle text. +@item 5, replace_words +Replace one or more words. Requires the find and replace parameters to be specified. Multiple words must be separated by the delimiter char specified vie the separator parameter (default: ','). +The number of words in the find and replace parameters needs to be equal. +The first word in find is replaced by the first word in replace, same for all subsequent words +@item 6, remove_words +Remove certain words. Requires the find parameter to be specified. Multiple words must be separated by the delimiter char specified vie the separator parameter (default: ','). +All words in the find parameter string will be removed from all subtitle text. +@end table + +@item find +Required for replace_chars, remove_chars, replace_words and remove_words. + +@item find_file +Specify a file from which to load the contents for the 'find' parameter. + +@item replace +Required for replace_chars and replace_words. + +@item replace_file +Specify a file from which to load the contents for the 'replace' parameter. + +@item separator +Delimiter character for words. Used with replace_words and remove_words- Must be a single character. +The default is '.'. + +@end table + +@subsection Examples + +@itemize +@item +Change all characters to upper case while keeping all styles and animations: +@example +ffmpeg -i "https://streams.videolan.org/ffmpeg/mkv_subtitles.mkv" -filter_complex "[0:s]textmod=mode=to_upper" -map 0 -y out.mkv +@end example +@item +Remove a set of symbol characters for am improved and smoother visual apperance: +@example +ffmpeg -i "https://streams.videolan.org/ffmpeg/mkv_subtitles.mkv" -filter_complex "[0:s]textmod=mode=remove_chars:find='$&#@*§'" -map 0 -y out.mkv +@end example +@end itemize + +@section graphicsub2text + +Converts graphic subtitles to text subtitles by performing OCR. + +For this filter to be available, ffmpeg needs to be compiled with libtesseract (see https://github.com/tesseract-ocr/tesseract). +Language models need to be downloaded from https://github.com/tesseract-ocr/tessdata and put into as subfolder named 'tessdata' or into a folder specified via the environment variable 'TESSDATA_PREFIX'. +The path can also be specified via filter option (see below). + +Note: These models are including the data for both OCR modes. + +Inputs: +- 0: Subtitles [bitmap] + +Outputs: +- 0: Subtitles [text] + +It accepts the following parameters: + +@table @option +@item ocr_mode +The character recognition mode to use. + +Supported OCR modes are: + +@table @var +@item 0, tesseract +This is the classic libtesseract operation mode. It is fast but less accurate than LSTM. +@item 1, lstm +Newer OCR implementation based on ML models. Provides usually better results, requires more processing resources. +@item 2, both +Use a combination of both modes. +@end table + +@item tessdata_path +The path to a folder containing the language models to be used. + +@item language +The recognition language. It needs to match the first three characters of a language model file in the tessdata path. + +@end table + + +@subsection Examples + +@itemize +@item +Convert DVB graphic subtitles to ASS (text) subtitles + +Note: For this to work, you need to have the data file 'eng.traineddata' in a 'tessdata' subfolder (see above). +@example +ffmpeg -loglevel verbose -i "https://streams.videolan.org/streams/ts/video_subs_ttxt%2Bdvbsub.ts" -filter_complex "[0:13]graphicsub2text=delay_when_no_duration=1" -c:s ass -y output.mkv +@end example +@end itemize + + +@section graphicsub2video + +Renders graphic subtitles as video frames. + +This filter replaces the previous "sub2video" hack which did the conversion implicitly and up-front as subtitle filtering wasn't possible at that time. +To retain compatibility with earlier sub2video command lines, this filter is being auto-inserted in those cases. + +For overlaying graphicsal subtitles it is recommended to use the 'overlaygraphicsubs' filter which is more efficient and takes less processing resources. + +This filter is still useful in cases where the overlay is done with hardware acceleration (e.g. overlay_qsv, overlay_vaapi, overlay_cuda) for preparing the overlay frames. + +Inputs: +@itemize +@item 0: Subtitles [BITMAP] +@end itemize + +Outputs: +@itemize +@item 0: Video [RGB32] +@end itemize + + +It accepts the following parameters: + +@table @option +@item size, s +Set the size of the output video frame. + +@end table + +@subsection Examples + +@itemize +@item +Overlay PGS subtitles +(not recommended - better use overlaygraphicsubs) +@example +ffmpeg -i "https://streams.videolan.org/samples/sub/PGS/Girl_With_The_Dragon_Tattoo_2%3A23%3A56.mkv" -filter_complex "[0:1]graphicsub2video[subs];[0:0][subs]overlay" output.mp4 +@end example + +@item +Overlay PGS subtitles implicitly +The graphicsub2video is inserted automatically for compatibility with legacy command lines. +@example +ffmpeg -i "https://streams.videolan.org/samples/sub/PGS/Girl_With_The_Dragon_Tattoo_2%3A23%3A56.mkv" -filter_complex "[0:0][0:1]overlay" output.mp4 +@end example +@end itemize + +@section overlaygraphicsubs + +Overlay graphic subtitles onto a video stream. + +This filter can blend graphical subtitles on a video stream directly, i.e. without creating full-size alpha images first. +The blending operation is limited to the area of the subtitle rectangles, which also means that no processing is done at times where no subtitles are to be displayed. + +Inputs: +@itemize +@item 0: Video [YUV420P, YUV422P, YUV444P, ARGB, RGBA, ABGR, BGRA, RGB24, BGR24] +@item 1: Subtitles [BITMAP] +@end itemize + +Outputs: +@itemize +@item 0: Video (same as input) +@end itemize + +It accepts the following parameters: + +@table @option +@item x +@item y +Set the expression for the x and y coordinates of the overlaid video +on the main video. Default value is "0" for both expressions. In case +the expression is invalid, it is set to a huge value (meaning that the +overlay will not be displayed within the output visible area). + +@item eof_action +See @ref{framesync}. + +@item eval +Set when the expressions for @option{x}, and @option{y} are evaluated. + +It accepts the following values: +@table @samp +@item init +only evaluate expressions once during the filter initialization or +when a command is processed + +@item frame +evaluate expressions for each incoming frame +@end table + +Default value is @samp{frame}. + +@item shortest +See @ref{framesync}. + +@end table + +@subsection Examples + +@itemize +@item +Overlay PGS subtitles +@example +ffmpeg -i "https://streams.videolan.org/samples/sub/PGS/Girl_With_The_Dragon_Tattoo_2%3A23%3A56.mkv" -filter_complex "[0:0][0:1]overlaygraphicsubs" output.mp4 +@end example +@end itemize + +@section overlaytextsubs + +Overlay text subtitles onto a video stream. + +This filter supersedes the classic @ref{subtitles} filter opposed to which it does no longer require to open and access the source stream separately, which is often causing problems or doesn't even work for non-local or slow sources. + +Inputs: +@itemize +@item 0: Video [YUV420P, YUV422P, YUV444P, ARGB, RGBA, ABGR, BGRA, RGB24, BGR24] +@item 1: Subtitles [TEXT] +@end itemize + +Outputs: +@itemize +@item 0: Video (same as input) +@end itemize + +It accepts the following parameters: + +@table @option + +@item alpha +Process alpha channel, by default alpha channel is untouched. + +@item fonts_dir +Set a directory path containing fonts that can be used by the filter. +These fonts will be used in addition to whatever the font provider uses. + +@item default_font_path +Path to a font file to be used as the default font. + +@item font_size +Set the default font size. + +@item fontconfig_file +Path to ASS fontconfig configuration file. + +@item force_style +Override default style or script info parameters of the subtitles. It accepts a +string containing ASS style format @code{KEY=VALUE} couples separated by ",". + +@item margin +Set the rendering margin in pixels. + +@item render_latest_only +For rendering, alway use the latest event only, which is covering the given point in time +@end table + +@subsection Examples + +@itemize +@item +Overlay ASS subtitles with animations: +@example +ffmpeg -i "http://streams.videolan.org/samples/sub/SSA/subtitle_testing_complex.mkv" -filter_complex "[0:v]overlaytextsubs" -map 0 -y out.mkv +@end example +@end itemize + +@section showspeaker + +Prepend speaker names to subtitle lines (when available). + +Subtitles in ASS/SSA format are often including the names of the persons +or character for each subtitle line. The showspeaker filter adds those names +to the actual subtitle text to make it visible on playback. + +Inputs: +@itemize +@item 0: Subtitles[TEXT] +@end itemize + +Outputs: +@itemize +@item 0: Subtitles[TEXT] +@end itemize + +It accepts the following parameters: + +@table @option +@item format +The format for prepending speaker names. Default is 'square_brackets'. + +Supported operation modes are: + +@table @var +@item 0, square_brackets +Enclose the speaker name in square brackets, followed by space ('[speaker] text'). +@item 1, round_brackets +Enclose the speaker name in round brackets, followed by space ('(speaker) text'). +@item 2, colon +Separate the speaker name with a colon and space ('speaker: text'). +@item 3, plain +Separate the speaker name with a space only ('speaker text'). +@end table + +@item line_break +Set thís parameter to insert a line break between speaker name and text instead of the space character. + +@item style +Allows to set a specific style for the speaker name text. + +This can be either a named style that exists in the ass subtitle header script (e.g. 'Default') or an ass style override code. +Example: @{\\c&HDD0000&\\be1\\i1\\bord10@} +This sets the color to blue, enables edge blurring, italic font and a border of size 10. + +The behavior is as follows: + +- When the style parameter is not provided, the filter will find the first position in the event string that is actual text. + The speaker name will be inserted at this position. This allows to have the speaker name shown in the same style like the + regular text, in case the string would start with a sequence of style codes. +- When the style parameter is provided, everything will be prepended to the original text: + Style Code or Style name >> Speaker Name >> Style Reset Code >> Original Text + +@end table + +@subsection Examples + +@itemize +@item +Prepend speaker names with blue text, smooth edges and blend/overlay that onto the video. +@example +ffmpeg -i INPUT -filter_complex "showspeaker=format=colon:style='@{\\c&HDD0000&\\be1@}',[0:v]overlaytextsubs" +@end example +@end itemize + + +@section splitcc + +Split-out closed-caption/A53 subtitles from video frame side data. + +This filter provides an input and an output for video frames, which are just passed through without modification. +The second out provides subtitle frames which are extracted from video frame side data. + +Inputs: +@itemize +@item 0: Video [ALL] +@end itemize + +Outputs: +@itemize +@item 0: Video (same as input) +@item 1: Subtitles [TEXT] +@end itemize + +It accepts the following parameters: + +@table @option + +@item use_cc_styles +Emit closed caption style header. +This will make closed captions appear in white font with a black rectangle background. + +@item real_time +Emit subtitle events as they are decoded for real-time display. + +@item real_time_latency_msec +Minimum elapsed time between emitting real-time subtitle events. +Only applies to real_time mode. + +@item data_field +Select data field. Possible values: + +@table @samp +@item auto +Pick first one that appears. +@item first +@item second +@end table + +@end table + +@subsection Examples + +@itemize +@item +Extract closed captions as text subtitle stream and overlay it onto the video in cc style (black bar background): +@example +ffmpeg -i "https://streams.videolan.org/streams/ts/CC/NewsStream-608-ac3.ts" -filter_complex "[0:v:0]splitcc=use_cc_styles=1[vid1][sub1];[vid1][sub1]overlaytextsubs" output.mkv +@end example + +@item +A nicer variant, using realtime output from cc_dec and rendering it with the render_latest_only parameter from overlaytextsubs to avoid ghosting by timely overlap. +@example +ffmpeg -i "https://streams.videolan.org/streams/ts/CC/NewsStream-608-ac3.ts" -filter_complex "[0:v:0]splitcc=real_time=1:real_time_latency_msec=200[vid1][sub1];[vid1][sub1]overlaytextsubs=render_latest_only=1" output.mkv +@end example +@end itemize + + +@section textsub2video + +Converts text subtitles to video frames. + +For overlaying text subtitles onto video frames it is recommended to use the overlaytextsubs filter. +The textsub2video is useful for for creating transparent text-frames when overlay is done via hw acceleration + +Inputs: +@itemize +@item 0: Subtitles [TEXT] +@end itemize + +Outputs: +@itemize +@item 0: Video [RGB32] +@end itemize + +It accepts the following parameters: + +@table @option + +@item rate, r +Set the framerate for updating overlay frames. +Normally, overlay frames will only be updated each time when the subtitles to display are changing. +In cases where subtitles include advanced features (like animation), this parameter determines the frequency by which the overlay frames should be updated. + +@item size, s +Set the output frame size. +Allows to override the size of output video frames. + +@item fonts_dir +Set a directory path containing fonts that can be used by the filter. +These fonts will be used in addition to whatever the font provider uses. + +@item default_font_path +Path to a font file to be used as the default font. + +@item font_size +Set the default font size. + +@item fontconfig_file +Path to ASS fontconfig configuration file. + +@item force_style +Override default style or script info parameters of the subtitles. It accepts a +string containing ASS style format @code{KEY=VALUE} couples separated by ",". + +@item margin +Set the rendering margin in pixels. + +@item render_latest_only +For rendering, alway use the latest event only, which is covering the given point in time. +@end table + +@section subscale + +Provides high-quality scaling and rearranging functionality for graphical subtitles. + +The subscale filter provides multiple approaches for manipulating +the size and position of graphical subtitle rectangles wich can +be combined or used separately. +Scaling is performed by converting the palettized subtitle bitmaps +to RGBA and re-quantization to palette colors afterwards via elbg algorithm. + +The two major operations are 'scale' and 're-arrange' with the +latter being separated as 'arrange_h' and 'arrange_v'. + + +Inputs: +- 0: Subtitles [bitmap] + +Outputs: +- 0: Subtitles [bitmap] + +It accepts the following parameters: + +@table @option + +@item w, width +Set the width of the output. +Width and height in case of graphical subtitles are just indicating +a virtual size for which the output (consisting of 0-n bitmap rectangles) +is intended to be displayed on. + +@item h, height +Set the height of the output. + +@item margin_h +Sets a horizontal margin to be preserverved when using any +of the arrange modes. + +@item margin_v +Sets a vertical margin to be preserverved when using any +of the arrange modes. + +@item force_original_aspect_ratio +Enable decreasing or increasing output video width or height if necessary to +keep the original aspect ratio. Possible values: + +@table @samp +@item disable +Scale the video as specified and disable this feature. + +@item decrease +The output video dimensions will automatically be decreased if needed. + +@item increase +The output video dimensions will automatically be increased if needed. + +@end table + + +@item scale_mode +Specifies how subtitle bitmaps should be scaled. +The scale factor is determined by the the factor between input +and output size. + +@table @samp +@item none +Do not apply any common scaling. + +@item uniform +Uniformly scale all subtitle bitmaps including their positions. + +@item uniform_no_reposition +Uniformly scale all subtitle bitmaps without changing positions. + +@end table + + +@item arrange_h +Specifies how subtitle bitmaps should be arranged horizontally. + +@item arrange_v +Specifies how subtitle bitmaps should be arranged vertically. + + +@table @samp +@item none +Do not rearrange subtitle bitmaps. + +@item margin_no_scale +Move subtitle bitmaps to be positioned inside the specified +margin (margin_h or margin_v) when possible and without scaling. + +@item margin_and_scale +Move subtitle bitmaps to be positioned inside the specified +margin (margin_h or margin_v) and scale in case it doesn't fit. + +@item snapalign_no_scale +Categorize subtitle bitmap positions as one of left/center/right +or top/bottom/middle based on original positioning and apply +these alignments for the target positioning. +No scaling will be applied. + +@item snapalign_and_scale +Categorize subtitle bitmap positions as one of left/center/right +or top/bottom/middle based on original positioning and apply +these alignments for the target positioning. +Bitmaps that do not fit inside the margins borders are +scaled to fit. +@end table + +@item eval +Set evaluation mode for the expressions (@option{width}, @option{height}). + +It accepts the following values: +@table @samp +@item init +Evaluate expressions only once during the filter initialization. + +@item frame +Evaluate expressions for each incoming frame. This is way slower than the +@samp{init} mode since it requires all the scalers to be re-computed, but it +allows advanced dynamic expressions. +@end table + +Default value is @samp{init}. + + +@item num_colors +Set the number of palette colors for output images. +Choose the maximum (256) when further processing is done (e.g. +overlaying on a video). +When subtitles will be encoded as bitmap subtitles (e.g. dvbsub), +a smaller number of palette colors (e.g. 4-16) might need to be used, depending +on the target format and codec. + +@item bitmap_width_align +@item bitmap_height_align +Make sure that subtitle bitmap sizes are a multiple of this +value. Default is 2. + +@end table + +@subsection Examples + +@itemize +@item +Uniformly scale down video and bitmap subtitles and encode +subtitles as dvbsub. +@example +ffmpeg -y -loglevel verbose -ss 32 -i "https://streams.videolan.org/samples/sub/largeres_vobsub.mkv" -filter_complex "[0:0]scale=480x270[vid1];[0:10]subscale=w=480:h=270:num_colors=16[sub1]" -map [vid1] -map [sub1] -c:s dvbsub -c:v libx265 output.ts +@end example +@item +Squeeze video vertically and arrange subtitle bitmaps +inside the video area without scaling, then overlay +subtitles onto the video. +@example +ffmpeg -y -loglevel verbose -ss 32 -i "https://streams.videolan.org/samples/sub/largeres_vobsub.mkv" -filter_complex "[0:0]scale=1920x400,setsar=1[vid1];[0:10]subscale=w=1920:h=400:scale_mode=none:margin_h=50:arrange_h=margin_no_scale:arrange_v=margin_no_scale:margin_v=50:num_colors=256[sub1];[vid1][sub1]overlaygraphicsubs" -c:v libx265 output.ts +@end example +@item +Scale both, a video and its embedded VOB subs, then encode them as separate streams into an MKV. +@example +ffmpeg -y -y -loglevel verbose -i "https://streams.videolan.org/samples/sub/largeres_vobsub.mkv" -filter_complex "[0:0]scale=720x576[vid1];[0:7]subscale=w=720:h=576:num_colors=16[sub1]" -map [vid1] -map [sub1] -c:s dvdsub out.mkv +@end example +@end itemize + +@section text2graphicsub + +Converts a text-based subtitle track to a bitmap-based subtitle track. + +The text2graphicsub filter uses libass to render all the subtitle +frames in a text-based subtitle track (such as srt or ass) to allow +its encoding with a bitmap-based subtitle encoder (such as dvd_subtitle). + +Inputs: +- 0: Subtitles [text] + +Outputs: +- 0: Subtitles [bitmap] + +It accepts the following parameters: + +@table @option + +@item s, size +Set the size of the output. Default from input track. + +@item n, num_colors +Set the number of palette colors for output images, +Range [2,256]. Default 16. + +@item f, filename +Set the media container from which to extract fonts required +for rendering the subtitles, usually the same as the input +track's media container. Can be omitted. + +@item fd, fontsdir +Set the directory from which to load fonts required for +rendering the subtitles. Can be used with 'fonts'. Can be omitted. + +@item ss, stripstyles +Remove certain styles from an ass track which do not render well. +Stripped styles include blurs, fades, and other animations. +Default yes. + +@end table + +@subsection Examples + +@itemize +@item +Convert a video's text-based subtitle track to a dvd_subtitle subtitle track. +@example +ffmpeg -i video.mkv -map 0:v -map 0:a -filter_complex [0:s]text2graphicsub=f=video.mkv[dvd_sub] -map [dvd_sub] -c copy -c:s dvd_subtitle output.mkv +@end example +@end itemize + +@c man end SUBTITLE FILTERS + @chapter Multimedia Filters @c man begin MULTIMEDIA FILTERS diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c index e57486fd4a02a..e130bc3e8da2e 100644 --- a/fftools/ffmpeg.c +++ b/fftools/ffmpeg.c @@ -159,163 +159,6 @@ static struct termios oldtty; static int restore_tty; #endif -/* sub2video hack: - Convert subtitles to video with alpha to insert them in filter graphs. - This is a temporary solution until libavfilter gets real subtitles support. - */ - -static int sub2video_get_blank_frame(InputStream *ist) -{ - int ret; - AVFrame *frame = ist->sub2video.frame; - - av_frame_unref(frame); - ist->sub2video.frame->width = ist->dec_ctx->width ? ist->dec_ctx->width : ist->sub2video.w; - ist->sub2video.frame->height = ist->dec_ctx->height ? ist->dec_ctx->height : ist->sub2video.h; - ist->sub2video.frame->format = AV_PIX_FMT_RGB32; - if ((ret = av_frame_get_buffer(frame, 0)) < 0) - return ret; - memset(frame->data[0], 0, frame->height * frame->linesize[0]); - return 0; -} - -static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h, - AVSubtitleRect *r) -{ - uint32_t *pal, *dst2; - uint8_t *src, *src2; - int x, y; - - if (r->type != SUBTITLE_BITMAP) { - av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n"); - return; - } - if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) { - av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle (%d %d %d %d) overflowing %d %d\n", - r->x, r->y, r->w, r->h, w, h - ); - return; - } - - dst += r->y * dst_linesize + r->x * 4; - src = r->data[0]; - pal = (uint32_t *)r->data[1]; - for (y = 0; y < r->h; y++) { - dst2 = (uint32_t *)dst; - src2 = src; - for (x = 0; x < r->w; x++) - *(dst2++) = pal[*(src2++)]; - dst += dst_linesize; - src += r->linesize[0]; - } -} - -static void sub2video_push_ref(InputStream *ist, int64_t pts) -{ - AVFrame *frame = ist->sub2video.frame; - int i; - int ret; - - av_assert1(frame->data[0]); - ist->sub2video.last_pts = frame->pts = pts; - for (i = 0; i < ist->nb_filters; i++) { - ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame, - AV_BUFFERSRC_FLAG_KEEP_REF | - AV_BUFFERSRC_FLAG_PUSH); - if (ret != AVERROR_EOF && ret < 0) - av_log(NULL, AV_LOG_WARNING, "Error while add the frame to buffer source(%s).\n", - av_err2str(ret)); - } -} - -void sub2video_update(InputStream *ist, int64_t heartbeat_pts, AVSubtitle *sub) -{ - AVFrame *frame = ist->sub2video.frame; - int8_t *dst; - int dst_linesize; - int num_rects, i; - int64_t pts, end_pts; - - if (!frame) - return; - if (sub) { - pts = av_rescale_q(sub->pts + sub->start_display_time * 1000LL, - AV_TIME_BASE_Q, ist->st->time_base); - end_pts = av_rescale_q(sub->pts + sub->end_display_time * 1000LL, - AV_TIME_BASE_Q, ist->st->time_base); - num_rects = sub->num_rects; - } else { - /* If we are initializing the system, utilize current heartbeat - PTS as the start time, and show until the following subpicture - is received. Otherwise, utilize the previous subpicture's end time - as the fall-back value. */ - pts = ist->sub2video.initialize ? - heartbeat_pts : ist->sub2video.end_pts; - end_pts = INT64_MAX; - num_rects = 0; - } - if (sub2video_get_blank_frame(ist) < 0) { - av_log(NULL, AV_LOG_ERROR, - "Impossible to get a blank canvas.\n"); - return; - } - dst = frame->data [0]; - dst_linesize = frame->linesize[0]; - for (i = 0; i < num_rects; i++) - sub2video_copy_rect(dst, dst_linesize, frame->width, frame->height, sub->rects[i]); - sub2video_push_ref(ist, pts); - ist->sub2video.end_pts = end_pts; - ist->sub2video.initialize = 0; -} - -static void sub2video_heartbeat(InputStream *ist, int64_t pts) -{ - InputFile *infile = input_files[ist->file_index]; - int i, j, nb_reqs; - int64_t pts2; - - /* When a frame is read from a file, examine all sub2video streams in - the same file and send the sub2video frame again. Otherwise, decoded - video frames could be accumulating in the filter graph while a filter - (possibly overlay) is desperately waiting for a subtitle frame. */ - for (i = 0; i < infile->nb_streams; i++) { - InputStream *ist2 = input_streams[infile->ist_index + i]; - if (!ist2->sub2video.frame) - continue; - /* subtitles seem to be usually muxed ahead of other streams; - if not, subtracting a larger time here is necessary */ - pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1; - /* do not send the heartbeat frame if the subtitle is already ahead */ - if (pts2 <= ist2->sub2video.last_pts) - continue; - if (pts2 >= ist2->sub2video.end_pts || ist2->sub2video.initialize) - /* if we have hit the end of the current displayed subpicture, - or if we need to initialize the system, update the - overlayed subpicture and its start/end times */ - sub2video_update(ist2, pts2 + 1, NULL); - for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++) - nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter); - if (nb_reqs) - sub2video_push_ref(ist2, pts2); - } -} - -static void sub2video_flush(InputStream *ist) -{ - int i; - int ret; - - if (ist->sub2video.end_pts < INT64_MAX) - sub2video_update(ist, INT64_MAX, NULL); - for (i = 0; i < ist->nb_filters; i++) { - ret = av_buffersrc_add_frame(ist->filters[i]->filter, NULL); - if (ret != AVERROR_EOF && ret < 0) - av_log(NULL, AV_LOG_WARNING, "Flush the frame error.\n"); - } -} - -/* end of sub2video hack */ - static void term_exit_sigsafe(void) { #if HAVE_TERMIOS_H @@ -516,7 +359,6 @@ static void ffmpeg_cleanup(int ret) avfilter_graph_free(&fg->graph); for (j = 0; j < fg->nb_inputs; j++) { InputFilter *ifilter = fg->inputs[j]; - struct InputStream *ist = ifilter->ist; if (ifilter->frame_queue) { AVFrame *frame; @@ -525,12 +367,6 @@ static void ffmpeg_cleanup(int ret) av_fifo_freep2(&ifilter->frame_queue); } av_freep(&ifilter->displaymatrix); - if (ist->sub2video.sub_queue) { - AVSubtitle sub; - while (av_fifo_read(ist->sub2video.sub_queue, &sub, 1) >= 0) - avsubtitle_free(&sub); - av_fifo_freep2(&ist->sub2video.sub_queue); - } av_buffer_unref(&ifilter->hw_frames_ctx); av_freep(&ifilter->name); av_freep(&fg->inputs[j]); @@ -563,15 +399,19 @@ static void ffmpeg_cleanup(int ret) for (i = 0; i < nb_input_streams; i++) { InputStream *ist = input_streams[i]; + if (ist->prev_sub.subtitle == ist->decoded_frame) + // Prevent double-free + ist->prev_sub.subtitle = NULL; + av_frame_free(&ist->decoded_frame); av_packet_free(&ist->pkt); av_dict_free(&ist->decoder_opts); - avsubtitle_free(&ist->prev_sub.subtitle); - av_frame_free(&ist->sub2video.frame); + av_frame_free(&ist->prev_sub.subtitle); av_freep(&ist->filters); av_freep(&ist->hwaccel_device); av_freep(&ist->dts_buffer); + av_buffer_unref(&ist->subtitle_header); avcodec_free_context(&ist->dec_ctx); avcodec_parameters_free(&ist->par); @@ -974,23 +814,80 @@ static void do_audio_out(OutputFile *of, OutputStream *ost, exit_program(1); } -static void do_subtitle_out(OutputFile *of, - OutputStream *ost, - AVSubtitle *sub) +static void encode_subtitle_frame(OutputFile *of, OutputStream *ost, AVFrame *frame, AVPacket *pkt, int64_t pts_offset) +{ + AVCodecContext *enc = ost->enc_ctx; + int ret; + + ost->frames_encoded++; + + ret = avcodec_send_frame(enc, frame); + if (ret < 0) + goto error; + + while (1) { + ret = avcodec_receive_packet(enc, pkt); + update_benchmark("encode_subtitles %d.%d", ost->file_index, ost->index); + if (ret == AVERROR(EAGAIN)) + break; + if (ret < 0) + goto error; + + if (debug_ts) { + av_log(NULL, AV_LOG_INFO, "encoder -> type:subtitles " + "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n", + av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &enc->time_base), + av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &enc->time_base)); + } + + pkt->pts = av_rescale_q(frame->subtitle_timing.start_pts, AV_TIME_BASE_Q, ost->mux_timebase); + pkt->duration = av_rescale_q(frame->subtitle_timing.duration, AV_TIME_BASE_Q, ost->mux_timebase); + pkt->pts += pts_offset; + + pkt->dts = pkt->pts; + of_output_packet(of, pkt, ost, 0); + } + ost->next_pts++; + + return; +error: + av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed - Error code: %d\n", ret); + exit_program(1); +} + +static void do_subtitle_out(OutputFile *of, OutputStream *ost, AVFrame *frame) { - int subtitle_out_max_size = 1024 * 1024; - int subtitle_out_size, nb, i, ret; + int nb, i; AVCodecContext *enc; AVPacket *pkt = ost->pkt; int64_t pts; - if (sub->pts == AV_NOPTS_VALUE) { + if (!frame) + return; + + av_log(NULL, AV_LOG_DEBUG, "do_subtitle_out: sub->pts: %"PRId64" frame->pts: %"PRId64"\n", frame->subtitle_timing.start_pts, frame->pts); + + if (frame->subtitle_timing.start_pts == AV_NOPTS_VALUE) { av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n"); if (exit_on_error) exit_program(1); return; } + if (frame->repeat_sub) { + av_log(NULL, AV_LOG_DEBUG, "Ignoring repeated subtitle frame\n"); + return; + } + + ////if (ost->last_subtitle_pts && ost->last_subtitle_pts == frame->subtitle_timing.start_pts) { + //// av_log(NULL, AV_LOG_DEBUG, "Ignoring subtitle frame with duplicate subtitle_pts\n"); + //// return; + ////} + + ost->last_subtitle_pts = frame->subtitle_timing.start_pts; + + init_output_stream_wrapper(ost, frame, 1); + enc = ost->enc_ctx; /* Note: DVB subtitle need one packet to draw them and one other @@ -1002,50 +899,38 @@ static void do_subtitle_out(OutputFile *of, nb = 1; /* shift timestamp to honor -ss and make check_recording_time() work with -t */ - pts = sub->pts; + pts = frame->subtitle_timing.start_pts; if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE) pts -= output_files[ost->file_index]->start_time; - for (i = 0; i < nb; i++) { - unsigned save_num_rects = sub->num_rects; - if (!check_recording_time(ost, pts, AV_TIME_BASE_Q)) - return; + ost->next_pts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base); + if (!check_recording_time(ost, ost->next_pts, ost->enc_ctx->time_base)) + return; - ret = av_new_packet(pkt, subtitle_out_max_size); - if (ret < 0) - report_and_exit(AVERROR(ENOMEM)); + frame->subtitle_timing.start_pts = pts; - sub->pts = pts; - // start_display_time is required to be 0 - sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q); - sub->end_display_time -= sub->start_display_time; - sub->start_display_time = 0; - if (i == 1) - sub->num_rects = 0; + for (i = 0; i < nb; i++) { + const unsigned save_num_rects = frame->num_subtitle_areas; + int64_t pts_offset = 0; ost->frames_encoded++; - subtitle_out_size = avcodec_encode_subtitle(enc, pkt->data, pkt->size, sub); if (i == 1) - sub->num_rects = save_num_rects; - if (subtitle_out_size < 0) { - av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n"); - exit_program(1); - } + frame->num_subtitle_areas = 0; - av_shrink_packet(pkt, subtitle_out_size); - pkt->pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->mux_timebase); - pkt->duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase); if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) { /* XXX: the pts correction is handled here. Maybe handling it in the codec would be better */ if (i == 0) - pkt->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase); + pts_offset = 0; else - pkt->pts += av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase); + pts_offset = av_rescale_q(frame->subtitle_timing.duration, AV_TIME_BASE_Q, ost->mux_timebase); } - pkt->dts = pkt->pts; - of_output_packet(of, pkt, ost, 0); + + encode_subtitle_frame(of, ost, frame, pkt, pts_offset); + + if (i == 1) + frame->num_subtitle_areas = save_num_rects; } } @@ -1351,8 +1236,26 @@ static int reap_filters(int flush) } do_audio_out(of, ost, filtered_frame); break; + case AVMEDIA_TYPE_SUBTITLE: + + if (filtered_frame->format == AV_SUBTITLE_FMT_ASS && !enc->subtitle_header + && filtered_frame->subtitle_header) { + const char *subtitle_header = (char *)filtered_frame->subtitle_header->data; + enc->subtitle_header = (uint8_t *)av_strdup(subtitle_header); + if (!enc->subtitle_header) + return AVERROR(ENOMEM); + enc->subtitle_header_size = strlen(subtitle_header); + } + + if ((ost->enc_ctx->width == 0 || ost->enc_ctx->height == 0) + && filter->inputs[0]->w > 0 && filter->inputs[0]->h > 0 ) { + ost->enc_ctx->width = filter->inputs[0]->w; + ost->enc_ctx->height = filter->inputs[0]->h; + } + + do_subtitle_out(of, ost, filtered_frame); + break; default: - // TODO support subtitle filters av_assert0(0); } @@ -1875,7 +1778,8 @@ static int ifilter_has_all_input_formats(FilterGraph *fg) int i; for (i = 0; i < fg->nb_inputs; i++) { if (fg->inputs[i]->format < 0 && (fg->inputs[i]->type == AVMEDIA_TYPE_AUDIO || - fg->inputs[i]->type == AVMEDIA_TYPE_VIDEO)) + fg->inputs[i]->type == AVMEDIA_TYPE_VIDEO || + fg->inputs[i]->type == AVMEDIA_TYPE_SUBTITLE)) return 0; } return 1; @@ -1902,6 +1806,18 @@ static int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame, int keep_ref case AVMEDIA_TYPE_VIDEO: need_reinit |= ifilter->width != frame->width || ifilter->height != frame->height; + + if (need_reinit) + need_reinit = 1; + break; + case AVMEDIA_TYPE_SUBTITLE: + need_reinit |= ifilter->width != frame->width || + ifilter->height != frame->height; + + need_reinit &= (ifilter->width == 0 || ifilter->height == 0); + + if (need_reinit) + need_reinit = 1; break; } @@ -1973,12 +1889,9 @@ static int ifilter_send_eof(InputFilter *ifilter, int64_t pts) return ret; } else { // the filtergraph was never configured - if (ifilter->format < 0) { - ret = ifilter_parameters_from_codecpar(ifilter, ifilter->ist->par); - if (ret < 0) - return ret; - } - if (ifilter->format < 0 && (ifilter->type == AVMEDIA_TYPE_AUDIO || ifilter->type == AVMEDIA_TYPE_VIDEO)) { + if (ifilter->format < 0) + ifilter_parameters_from_codecpar(ifilter, ifilter->ist->st->codecpar); + if (ifilter->format < 0 && (ifilter->type == AVMEDIA_TYPE_AUDIO || ifilter->type == AVMEDIA_TYPE_VIDEO || ifilter->type == AVMEDIA_TYPE_SUBTITLE)) { av_log(NULL, AV_LOG_ERROR, "Cannot determine format of input stream %d:%d after EOF\n", ifilter->ist->file_index, ifilter->ist->st->index); return AVERROR_INVALIDDATA; } @@ -2016,7 +1929,7 @@ static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacke static int send_frame_to_filters(InputStream *ist, AVFrame *decoded_frame) { - int i, ret; + int i, ret = 0; av_assert1(ist->nb_filters > 0); /* ensure ret is initialized */ for (i = 0; i < ist->nb_filters; i++) { @@ -2216,77 +2129,198 @@ static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_ return err < 0 ? err : ret; } -static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output, +static void subtitle_send_kickoff(InputStream *ist, int64_t heartbeat_pts) +{ + AVFrame *frame; + int64_t pts; + + frame = av_frame_alloc(); + if (!frame) { + av_log(ist->dec_ctx, AV_LOG_ERROR, "Unable to alloc frame (out of memory).\n"); + return; + } + + frame->type = AVMEDIA_TYPE_SUBTITLE; + av_frame_get_buffer2(frame, 0); + + frame->format = (uint16_t)ist->dec_ctx->subtitle_type; + + pts = FFMAX(heartbeat_pts, ist->subtitle_kickoff.last_pts) + av_rescale_q(10, (AVRational){ 1, 1000 }, ist->st->time_base); + + frame->width = ist->subtitle_kickoff.w; + frame->height = ist->subtitle_kickoff.h; + frame->subtitle_timing.start_pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q); + frame->subtitle_timing.duration = av_rescale_q(10, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q); + frame->pts = pts; + + av_log(NULL, AV_LOG_WARNING, "subtitle_kickoff: call subtitle_resend_current %"PRId64" frame->format: %d\n", pts, frame->format); + + ist->subtitle_kickoff.last_pts = pts; + + send_frame_to_filters(ist, frame); + + av_frame_free(&frame); +} + +// Opposed to the earlier "subtitle hearbeat", this is primarily aimed at +// sending an initial subtitle frame to the filters for propagating the initial +// timing values and to avoid that too much time is spent on a single "HW" decoder +// which could overflow its buffer pool otherwise +static void subtitle_kickoff(InputStream *ist, int64_t pts) +{ + int i; + int64_t pts2; + int64_t diff; + + if (ist->st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO) + return; + + for (i = 0; i < nb_input_streams; i++) { + InputStream *ist2 = input_streams[i]; + unsigned j, nb_reqs; + + if (!ist2->subtitle_kickoff.is_active) + continue; + /* It's primarily the initial send that matters and which propagates + * the right start times to subtitle filters depending on input from decoding */ + diff = av_rescale_q(5000, (AVRational){ 1, 1000 }, ist2->st->time_base); + pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base); + + /* do not send a kickoff frame if the subtitle is already ahead */ + if (pts2 - diff <= ist2->subtitle_kickoff.last_pts) + continue; + + for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++) { + if (ist2->filters[j]->filter == NULL) { + subtitle_send_kickoff(ist2, pts2); + return; + } + nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter); + } + if (nb_reqs) { + av_log(NULL, AV_LOG_WARNING, "subtitle_kickoff: resend - pts: %"PRIi64"\n", pts2); + subtitle_send_kickoff(ist2, pts2); + } + } +} + +static InputStream *get_input_stream(OutputStream *ost) +{ + if (ost->source_index >= 0) + return input_streams[ost->source_index]; + return NULL; +} + +static int decode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output, int *decode_failed) { - AVSubtitle subtitle; - int free_sub = 1; - int ret = avcodec_decode_subtitle2(ist->dec_ctx, - &subtitle, got_output, pkt); + AVFrame *decoded_frame; + AVCodecContext *avctx = ist->dec_ctx; + int i = 0, ret = 0, err = 0; + int64_t pts; + + if (!ist->decoded_frame && !((ist->decoded_frame = av_frame_alloc()))) + return AVERROR(ENOMEM); + decoded_frame = ist->decoded_frame; + decoded_frame->type = AVMEDIA_TYPE_SUBTITLE; + decoded_frame->format = (uint16_t)avctx->subtitle_type; + + if (!ist->subtitle_header && avctx->subtitle_header && avctx->subtitle_header_size > 0) { + ist->subtitle_header = av_buffer_allocz(avctx->subtitle_header_size + 1); + if (!ist->subtitle_header) + return AVERROR(ENOMEM); + memcpy(ist->subtitle_header->data, avctx->subtitle_header, avctx->subtitle_header_size); + } - check_decode_result(NULL, got_output, ret); + ret = decode(avctx, decoded_frame, got_output, pkt); + + if (ret != AVERROR_EOF) + check_decode_result(NULL, got_output, ret); if (ret < 0 || !*got_output) { *decode_failed = 1; - if (!pkt->size) - sub2video_flush(ist); + if (!pkt->size) { + // Flush + for (i = 0; i < ist->nb_filters; i++) { + if (ist->filters[i]->filter != NULL) { + ret = av_buffersrc_add_frame(ist->filters[i]->filter, NULL); + if (ret != AVERROR_EOF && ret < 0) + av_log(NULL, AV_LOG_WARNING, "Flush the frame error.\n"); + } + } + } return ret; } if (ist->fix_sub_duration) { - int end = 1; - if (ist->prev_sub.got_output) { - end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts, - 1000, AV_TIME_BASE); - if (end < ist->prev_sub.subtitle.end_display_time) { - av_log(NULL, AV_LOG_DEBUG, - "Subtitle duration reduced from %"PRId32" to %d%s\n", - ist->prev_sub.subtitle.end_display_time, end, - end <= 0 ? ", dropping it" : ""); - ist->prev_sub.subtitle.end_display_time = end; + int64_t end = 1; + if (ist->prev_sub.got_output && ist->prev_sub.subtitle) { + + const int64_t duration = ist->prev_sub.subtitle->subtitle_timing.duration; + end = decoded_frame->subtitle_timing.start_pts - ist->prev_sub.subtitle->subtitle_timing.start_pts; + + if (end < duration) { + av_log(avctx, AV_LOG_DEBUG, "Subtitle duration reduced from %"PRId64" to %"PRId64"%s\n", + duration, end, end <= 0 ? ", dropping it" : ""); + ist->prev_sub.subtitle->subtitle_timing.duration = end; } } - FFSWAP(int, *got_output, ist->prev_sub.got_output); - FFSWAP(int, ret, ist->prev_sub.ret); - FFSWAP(AVSubtitle, subtitle, ist->prev_sub.subtitle); + FFSWAP(int, *got_output, ist->prev_sub.got_output); + FFSWAP(int, ret, ist->prev_sub.ret); + FFSWAP(AVFrame*, ist->decoded_frame, ist->prev_sub.subtitle); + decoded_frame = ist->decoded_frame; if (end <= 0) - goto out; + return (int)end; } - if (!*got_output) + if (!*got_output || !decoded_frame) return ret; - if (ist->sub2video.frame) { - sub2video_update(ist, INT64_MIN, &subtitle); - } else if (ist->nb_filters) { - if (!ist->sub2video.sub_queue) - ist->sub2video.sub_queue = av_fifo_alloc2(8, sizeof(AVSubtitle), AV_FIFO_FLAG_AUTO_GROW); - if (!ist->sub2video.sub_queue) - report_and_exit(AVERROR(ENOMEM)); + decoded_frame->type = AVMEDIA_TYPE_SUBTITLE; - ret = av_fifo_write(ist->sub2video.sub_queue, &subtitle, 1); - if (ret < 0) - exit_program(1); - free_sub = 0; + if (decoded_frame->format == AV_SUBTITLE_FMT_UNKNOWN) + decoded_frame->format = (uint16_t)avctx->subtitle_type; + + if ((ret = av_buffer_replace(&decoded_frame->subtitle_header, ist->subtitle_header)) < 0) + return ret; + + pts = av_rescale_q(decoded_frame->subtitle_timing.start_pts, AV_TIME_BASE_Q, ist->st->time_base); + if (ist->subtitle_kickoff.last_pts > 0 && pts <= ist->subtitle_kickoff.last_pts) + pts = ist->subtitle_kickoff.last_pts + 1; + + ist->subtitle_kickoff.last_pts = decoded_frame->pts = pts; + + if (ist->nb_filters > 0) { + AVFrame *filter_frame = av_frame_clone(decoded_frame); + if (!filter_frame) { + err = AVERROR(ENOMEM); + goto end; + } + + err = send_frame_to_filters(ist, filter_frame); + av_frame_free(&filter_frame); } - if (!subtitle.num_rects) - goto out; + if (err >= 0) { + for (OutputStream *ost = ost_iter(NULL); ost; ost = ost_iter(ost)) { + InputStream *ist_src = get_input_stream(ost); - ist->frames_decoded++; + if (!ist_src || !check_output_constraints(ist, ost) + || ist_src != ist + || !ost->enc_ctx + || ost->enc_ctx->codec_type != AVMEDIA_TYPE_SUBTITLE) + continue; - for (OutputStream *ost = ost_iter(NULL); ost; ost = ost_iter(ost)) { - if (!check_output_constraints(ist, ost) || !ost->enc_ctx - || ost->enc_ctx->codec_type != AVMEDIA_TYPE_SUBTITLE) - continue; + if (ost->filter && ost->filter->filter->nb_inputs > 0) + continue; - do_subtitle_out(output_files[ost->file_index], ost, &subtitle); + do_subtitle_out(output_files[ost->file_index], ost, decoded_frame); + } } -out: - if (free_sub) - avsubtitle_free(&subtitle); - return ret; +end: + av_frame_unref(decoded_frame); + return err < 0 ? err : ret; } static int send_filter_eof(InputStream *ist) @@ -2393,7 +2427,7 @@ static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eo case AVMEDIA_TYPE_SUBTITLE: if (repeating) break; - ret = transcode_subtitles(ist, avpkt, &got_output, &decode_failed); + ret = decode_subtitles(ist, avpkt, &got_output, &decode_failed); if (!pkt && ret >= 0) ret = AVERROR_EOF; av_packet_unref(avpkt); @@ -2611,13 +2645,6 @@ static int init_input_stream(int ist_index, char *error, int error_len) return 0; } -static InputStream *get_input_stream(OutputStream *ost) -{ - if (ost->source_index >= 0) - return input_streams[ost->source_index]; - return NULL; -} - static int compare_int64(const void *a, const void *b) { return FFDIFFSIGN(*(const int64_t *)a, *(const int64_t *)b); @@ -3006,9 +3033,9 @@ static int init_output_stream_encode(OutputStream *ost, AVFrame *frame) break; case AVMEDIA_TYPE_SUBTITLE: enc_ctx->time_base = AV_TIME_BASE_Q; - if (!enc_ctx->width) { - enc_ctx->width = input_streams[ost->source_index]->par->width; - enc_ctx->height = input_streams[ost->source_index]->par->height; + if (!enc_ctx->width && ost->source_index >= 0) { + enc_ctx->width = input_streams[ost->source_index]->st->codecpar->width; + enc_ctx->height = input_streams[ost->source_index]->st->codecpar->height; } if (dec_ctx && dec_ctx->subtitle_header) { /* ASS code assumes this buffer is null terminated so add extra byte. */ @@ -3057,6 +3084,17 @@ static int init_output_stream_encode(OutputStream *ost, AVFrame *frame) return 0; } +static enum AVSubtitleType get_subtitle_format(const AVCodecDescriptor *codec_descriptor) +{ + if(codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) + return AV_SUBTITLE_FMT_BITMAP; + + if(codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB) + return AV_SUBTITLE_FMT_ASS; + + return AV_SUBTITLE_FMT_UNKNOWN; +} + static int init_output_stream(OutputStream *ost, AVFrame *frame, char *error, int error_len) { @@ -3064,13 +3102,23 @@ static int init_output_stream(OutputStream *ost, AVFrame *frame, if (ost->enc_ctx) { const AVCodec *codec = ost->enc_ctx->codec; + AVCodecContext *dec = NULL; InputStream *ist; ret = init_output_stream_encode(ost, frame); if (ret < 0) return ret; - ist = get_input_stream(ost); + if ((ist = get_input_stream(ost))) + dec = ist->dec_ctx; + if (dec && dec->subtitle_header) { + /* ASS code assumes this buffer is null terminated so add extra byte. */ + ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1); + if (!ost->enc_ctx->subtitle_header) + return AVERROR(ENOMEM); + memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size); + ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size; + } if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0)) av_dict_set(&ost->encoder_opts, "threads", "auto", 0); @@ -3082,6 +3130,18 @@ static int init_output_stream(OutputStream *ost, AVFrame *frame, return ret; } + if (ist && ist->dec->type == AVMEDIA_TYPE_SUBTITLE && ost->enc_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE) { + AVCodecDescriptor const *output_descriptor = avcodec_descriptor_get(ost->enc_ctx->codec_id); + const enum AVSubtitleType in_subtitle_format = (uint16_t)dec->subtitle_type; + const enum AVSubtitleType out_subtitle_format = output_descriptor ? get_subtitle_format(output_descriptor) : AV_SUBTITLE_FMT_UNKNOWN; + + if (ist->nb_filters == 0 && in_subtitle_format != AV_SUBTITLE_FMT_UNKNOWN && out_subtitle_format != AV_SUBTITLE_FMT_UNKNOWN + && in_subtitle_format != out_subtitle_format) { + snprintf(error, error_len, "Subtitle encoding is only possible from text to text or bitmap to bitmap"); + return AVERROR_INVALIDDATA; + } + } + if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) { if (ret == AVERROR_EXPERIMENTAL) abort_codec_experimental(codec, 1); @@ -3230,10 +3290,11 @@ static int transcode_init(void) * to be configured with the correct audio frame size, which is only * known after the encoder is initialized. */ - for (ost = ost_iter(NULL); ost; ost = ost_iter(ost)) { + for (OutputStream *ost = ost_iter(NULL); ost; ost = ost_iter(ost)) { if (ost->enc_ctx && - (ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO || - ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)) + (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO || + ost->enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO || + ost->enc_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE)) continue; ret = init_output_stream_wrapper(ost, NULL, 0); @@ -3742,7 +3803,7 @@ static int process_input(int file_index) av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q)); } - sub2video_heartbeat(ist, pkt->pts); + subtitle_kickoff(ist, pkt->pts); process_input_packet(ist, pkt, 0); @@ -3943,6 +4004,7 @@ static int transcode(void) /* at the end of stream, we must flush the decoder buffers */ for (i = 0; i < nb_input_streams; i++) { ist = input_streams[i]; + ist->subtitle_kickoff.is_active = 0; if (!input_files[ist->file_index]->eof_reached) { process_input_packet(ist, NULL, 0); } diff --git a/fftools/ffmpeg.h b/fftools/ffmpeg.h index 5966cac60e342..06858de046ab6 100644 --- a/fftools/ffmpeg.h +++ b/fftools/ffmpeg.h @@ -386,17 +386,16 @@ typedef struct InputStream { struct { /* previous decoded subtitle and related variables */ int got_output; int ret; - AVSubtitle subtitle; + AVFrame *subtitle; } prev_sub; - struct sub2video { + struct subtitle_kickoff { + int is_active; int64_t last_pts; - int64_t end_pts; - AVFifo *sub_queue; ///< queue of AVSubtitle* before filter init - AVFrame *frame; int w, h; - unsigned int initialize; ///< marks if sub2video_update should force an initialization - } sub2video; + } subtitle_kickoff; + + AVBufferRef *subtitle_header; /* decoded data from this stream goes into all those filters * currently video and audio only */ @@ -513,6 +512,8 @@ typedef struct OutputStream { // everything before it should be discarded int64_t ts_copy_start; + /* subtitle_pts values of the last subtitle frame having arrived for encoding */ + int64_t last_subtitle_pts; // the timebase of the packets sent to the muxer AVRational mux_timebase; AVRational enc_timebase; @@ -713,8 +714,6 @@ int filtergraph_is_simple(FilterGraph *fg); int init_simple_filtergraph(InputStream *ist, OutputStream *ost); int init_complex_filtergraph(FilterGraph *fg); -void sub2video_update(InputStream *ist, int64_t heartbeat_pts, AVSubtitle *sub); - int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame); int ffmpeg_parse_options(int argc, char **argv); diff --git a/fftools/ffmpeg_filter.c b/fftools/ffmpeg_filter.c index 718826a4851e2..57a6c8ee16dc5 100644 --- a/fftools/ffmpeg_filter.c +++ b/fftools/ffmpeg_filter.c @@ -22,6 +22,8 @@ #include "ffmpeg.h" +#include "libavutil/ass_split_internal.h" + #include "libavfilter/avfilter.h" #include "libavfilter/buffersink.h" #include "libavfilter/buffersrc.h" @@ -30,11 +32,9 @@ #include "libavutil/avstring.h" #include "libavutil/bprint.h" #include "libavutil/channel_layout.h" -#include "libavutil/display.h" #include "libavutil/opt.h" #include "libavutil/pixdesc.h" #include "libavutil/pixfmt.h" -#include "libavutil/imgutils.h" #include "libavutil/samplefmt.h" // FIXME: YUV420P etc. are actually supported with full color range, @@ -235,9 +235,8 @@ static void init_input_filter(FilterGraph *fg, AVFilterInOut *in) InputFilter *ifilter; int i; - // TODO: support other filter types - if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) { - av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported " + if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO && type != AVMEDIA_TYPE_SUBTITLE) { + av_log(NULL, AV_LOG_FATAL, "Only video, audio and subtitle filters supported " "currently.\n"); exit_program(1); } @@ -258,8 +257,9 @@ static void init_input_filter(FilterGraph *fg, AVFilterInOut *in) for (i = 0; i < s->nb_streams; i++) { enum AVMediaType stream_type = s->streams[i]->codecpar->codec_type; if (stream_type != type && - !(stream_type == AVMEDIA_TYPE_SUBTITLE && - type == AVMEDIA_TYPE_VIDEO /* sub2video hack */)) + // in the followng case we auto-insert the graphicsub2video conversion filter + // for retaining compatibility with the previous sub2video hack + !(stream_type == AVMEDIA_TYPE_SUBTITLE && type == AVMEDIA_TYPE_VIDEO)) continue; if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) { st = s->streams[i]; @@ -364,6 +364,21 @@ static int insert_trim(int64_t start_time, int64_t duration, const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim"; int ret = 0; + switch (type) { + case AVMEDIA_TYPE_VIDEO: + name = "trim"; + break; + case AVMEDIA_TYPE_AUDIO: + name = "atrim"; + break; + case AVMEDIA_TYPE_SUBTITLE: + name = "strim"; + break; + default: + av_log(NULL, AV_LOG_ERROR, "insert_trim: Invalid media type: %d\n", type); + return AVERROR_INVALIDDATA; + } + if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE) return 0; @@ -426,6 +441,40 @@ static int insert_filter(AVFilterContext **last_filter, int *pad_idx, return 0; } +static int configure_output_subtitle_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out) +{ + OutputStream *ost = ofilter->ost; + OutputFile *of = output_files[ost->file_index]; + AVFilterContext *last_filter = out->filter_ctx; + int pad_idx = out->pad_idx; + int ret; + char name[255]; + + snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index); + ret = avfilter_graph_create_filter(&ofilter->filter, + avfilter_get_by_name("sbuffersink"), + name, NULL, NULL, fg->graph); + + if (ret < 0) { + av_log(NULL, AV_LOG_ERROR, "Unable to create filter sbuffersink\n"); + return ret; + } + + snprintf(name, sizeof(name), "trim_out_%d_%d", + ost->file_index, ost->index); + ret = insert_trim(of->start_time, of->recording_time, + &last_filter, &pad_idx, name); + if (ret < 0) + return ret; + + ////ost->st->codecpar->codec_tag = MKTAG('a', 's', 's', 's'); + + if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0) + return ret; + + return 0; +} + static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out) { OutputStream *ost = ofilter->ost; @@ -609,7 +658,8 @@ static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, int i; for (i = 0; i < of->nb_streams; i++) - if (of->streams[i]->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) + if (of->streams[i]->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO || + of->streams[i]->st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) break; if (i < of->nb_streams) { @@ -643,6 +693,7 @@ static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) { case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out); case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out); + case AVMEDIA_TYPE_SUBTITLE: return configure_output_subtitle_filter(fg, ofilter, out); default: av_assert0(0); return 0; } } @@ -662,51 +713,154 @@ void check_filter_outputs(void) } } -static int sub2video_prepare(InputStream *ist, InputFilter *ifilter) +static int configure_input_subtitle_filter(FilterGraph *fg, InputFilter *ifilter, + AVFilterInOut *in) { - AVFormatContext *avf = input_files[ist->file_index]->ctx; - int i, w, h; + AVFilterContext *last_filter; + const AVFilter *buffer_filt = avfilter_get_by_name("sbuffer"); + InputStream *ist = ifilter->ist; + InputFile *f = input_files[ist->file_index]; + AVBPrint args; + char name[255]; + int ret, pad_idx = 0; + int w, h; + int64_t tsoffset = 0; + AVBufferSrcParameters *par = av_buffersrc_parameters_alloc(); + enum AVMediaType media_type; + + if (!par) + return AVERROR(ENOMEM); + + par->format = AV_PIX_FMT_NONE; + + if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) { + av_log(NULL, AV_LOG_ERROR, "Cannot connect subtitle filter to audio input\n"); + ret = AVERROR(EINVAL); + goto fail; + } + + if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO) { + av_log(NULL, AV_LOG_ERROR, "Cannot connect subtitle filter to video input\n"); + ret = AVERROR(EINVAL); + goto fail; + } + + if (ist->st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE && ist->dec_ctx) { + // For subtitles, we need to set the format here. Would we leave the format + // at -1, it would delay processing (ifilter_has_all_input_formats()) until + // the first subtile frame arrives, which could never happen in the worst case + ifilter->format = (uint16_t)ist->dec_ctx->subtitle_type; + } + + ist->subtitle_kickoff.is_active = 1; - /* Compute the size of the canvas for the subtitles stream. - If the subtitles codecpar has set a size, use it. Otherwise use the - maximum dimensions of the video streams in the same file. */ w = ifilter->width; h = ifilter->height; + if (!(w && h)) { - for (i = 0; i < avf->nb_streams; i++) { - if (avf->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { - w = FFMAX(w, avf->streams[i]->codecpar->width); - h = FFMAX(h, avf->streams[i]->codecpar->height); + w = ist->dec_ctx->width; + h = ist->dec_ctx->height; + } + + if (!(w && h) && ist->dec_ctx->subtitle_header) { + ASSSplitContext *ass_ctx = avpriv_ass_split((char *)ist->dec_ctx->subtitle_header); + ASS *ass = (ASS *)ass_ctx; + w = ass->script_info.play_res_x; + h = ass->script_info.play_res_y; + avpriv_ass_split_free(ass_ctx); + } + + ist->subtitle_kickoff.w = w; + ist->subtitle_kickoff.h = h; + av_log(ifilter, AV_LOG_INFO, "subtitle input filter: decoding size %dx%d\n", ist->subtitle_kickoff.w, ist->subtitle_kickoff.h); + + ifilter->width = w; + ifilter->height = h; + ist->dec_ctx->width = w; + ist->dec_ctx->height = h; + + ist->subtitle_kickoff.last_pts = INT64_MIN; + + snprintf(name, sizeof(name), "graph %d subtitle input from stream %d:%d", fg->index, + ist->file_index, ist->st->index); + + + av_bprint_init(&args, 0, AV_BPRINT_SIZE_AUTOMATIC); + av_bprintf(&args, + "subtitle_type=%d:width=%d:height=%d:time_base=%d/%d:", + ifilter->format, ifilter->width, ifilter->height, + ist->st->time_base.num, ist->st->time_base.den); + if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name, + args.str, NULL, fg->graph)) < 0) + goto fail; + + par->hw_frames_ctx = ifilter->hw_frames_ctx; + par->format = ifilter->format; + par->width = ifilter->width; + par->height = ifilter->height; + + ret = av_buffersrc_parameters_set(ifilter->filter, par); + if (ret < 0) + goto fail; + av_freep(&par); + last_filter = ifilter->filter; + + // This is for sub2video compatibility + media_type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx); + if (media_type == AVMEDIA_TYPE_VIDEO) { + int subscale_w = w, subscale_h = h; + + av_log(NULL, AV_LOG_INFO, "Auto-inserting subfeed filter\n"); + ret = insert_filter(&last_filter, &pad_idx, "subfeed", NULL); + if (ret < 0) + return ret; + + if (!(subscale_w && subscale_h)) { + // If the subtitle frame size is unknown, try to find a video input + // and use its size for adding a subscale filter + for (int i = 0; i < fg->nb_inputs; i++) { + InputFilter *input = fg->inputs[i]; + if (input->type == AVMEDIA_TYPE_VIDEO && input->width && input->height) { + subscale_w = input->width; + subscale_h = input->height; + break; + } } } - if (!(w && h)) { - w = FFMAX(w, 720); - h = FFMAX(h, 576); - } - av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h); - } - ist->sub2video.w = ifilter->width = w; - ist->sub2video.h = ifilter->height = h; - ifilter->width = ist->dec_ctx->width ? ist->dec_ctx->width : ist->sub2video.w; - ifilter->height = ist->dec_ctx->height ? ist->dec_ctx->height : ist->sub2video.h; + if (subscale_w && subscale_h) { + char subscale_params[64]; + snprintf(subscale_params, sizeof(subscale_params), "w=%d:h=%d", subscale_w, subscale_h); + ret = insert_filter(&last_filter, &pad_idx, "subscale", subscale_params); + if (ret < 0) + return ret; + } - /* rectangles are AV_PIX_FMT_PAL8, but we have no guarantee that the - palettes for all rectangles are identical or compatible */ - ifilter->format = AV_PIX_FMT_RGB32; + av_log(NULL, AV_LOG_INFO, "Auto-inserting graphicsub2video filter\n"); + ret = insert_filter(&last_filter, &pad_idx, "graphicsub2video", NULL); + if (ret < 0) + return ret; + } - ist->sub2video.frame = av_frame_alloc(); - if (!ist->sub2video.frame) - return AVERROR(ENOMEM); - ist->sub2video.last_pts = INT64_MIN; - ist->sub2video.end_pts = INT64_MIN; + if (copy_ts) { + tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time; + if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE) + tsoffset += f->ctx->start_time; + } + ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ? + AV_NOPTS_VALUE : tsoffset, f->recording_time, + &last_filter, &pad_idx, name); + if (ret < 0) + return ret; - /* sub2video structure has been (re-)initialized. - Mark it as such so that the system will be - initialized with the first received heartbeat. */ - ist->sub2video.initialize = 1; + if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0) + return ret; return 0; +fail: + av_freep(&par); + + return ret; } static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter, @@ -725,8 +879,15 @@ static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter, char name[255]; int ret, pad_idx = 0; int64_t tsoffset = 0; - AVBufferSrcParameters *par = av_buffersrc_parameters_alloc(); + AVBufferSrcParameters *par; + + if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE) { + // Automatically insert conversion filter to retain compatibility + // with sub2video command lines + return configure_input_subtitle_filter(fg, ifilter, in); + } + par = av_buffersrc_parameters_alloc(); if (!par) return AVERROR(ENOMEM); memset(par, 0, sizeof(*par)); @@ -741,12 +902,6 @@ static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter, if (!fr.num) fr = ist->framerate_guessed; - if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE) { - ret = sub2video_prepare(ist, ifilter); - if (ret < 0) - goto fail; - } - sar = ifilter->sample_aspect_ratio; if(!sar.den) sar = (AVRational){0,1}; @@ -758,7 +913,7 @@ static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter, tb.num, tb.den, sar.num, sar.den); if (fr.num && fr.den) av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den); - snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index, + snprintf(name, sizeof(name), "graph %d video input from stream %d:%d", fg->index, ist->file_index, ist->st->index); @@ -923,6 +1078,7 @@ static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter, switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) { case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in); case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in); + case AVMEDIA_TYPE_SUBTITLE: return configure_input_subtitle_filter(fg, ifilter, in); default: av_assert0(0); return 0; } } @@ -941,7 +1097,8 @@ static int filter_is_buffersrc(const AVFilterContext *f) { return f->nb_inputs == 0 && (!strcmp(f->filter->name, "buffer") || - !strcmp(f->filter->name, "abuffer")); + !strcmp(f->filter->name, "abuffer") || + !strcmp(f->filter->name, "sbuffer")); } static int graph_is_meta(AVFilterGraph *graph) @@ -1110,18 +1267,6 @@ int configure_filtergraph(FilterGraph *fg) } } - /* process queued up subtitle packets */ - for (i = 0; i < fg->nb_inputs; i++) { - InputStream *ist = fg->inputs[i]->ist; - if (ist->sub2video.sub_queue && ist->sub2video.frame) { - AVSubtitle tmp; - while (av_fifo_read(ist->sub2video.sub_queue, &tmp, 1) >= 0) { - sub2video_update(ist, INT64_MIN, &tmp); - avsubtitle_free(&tmp); - } - } - } - return 0; fail: @@ -1141,6 +1286,7 @@ int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame) ifilter->width = frame->width; ifilter->height = frame->height; ifilter->sample_aspect_ratio = frame->sample_aspect_ratio; + ifilter->type = frame->type; ifilter->sample_rate = frame->sample_rate; ret = av_channel_layout_copy(&ifilter->ch_layout, &frame->ch_layout); diff --git a/fftools/ffmpeg_hw.c b/fftools/ffmpeg_hw.c index 88fa7824701ed..a9e241b54061d 100644 --- a/fftools/ffmpeg_hw.c +++ b/fftools/ffmpeg_hw.c @@ -449,7 +449,7 @@ int hw_device_setup_for_encode(OutputStream *ost) AVBufferRef *frames_ref = NULL; int i; - if (ost->filter) { + if (ost->filter && ost->filter->filter) { frames_ref = av_buffersink_get_hw_frames_ctx(ost->filter->filter); if (frames_ref && ((AVHWFramesContext*)frames_ref->data)->format == diff --git a/fftools/ffmpeg_mux_init.c b/fftools/ffmpeg_mux_init.c index c77260c24b52a..b79f540b21947 100644 --- a/fftools/ffmpeg_mux_init.c +++ b/fftools/ffmpeg_mux_init.c @@ -381,11 +381,15 @@ static char *get_ost_filters(OptionsContext *o, AVFormatContext *oc, if (ost->filters_script) return file_read(ost->filters_script); - else if (ost->filters) + if (ost->filters) return av_strdup(ost->filters); - return av_strdup(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ? - "null" : "anull"); + switch (st->codecpar->codec_type) { + case AVMEDIA_TYPE_VIDEO: return av_strdup("null"); + case AVMEDIA_TYPE_AUDIO: return av_strdup("anull"); + case AVMEDIA_TYPE_SUBTITLE: return av_strdup("snull"); + default: av_assert0(0); return NULL; + } } static void check_streamcopy_filters(OptionsContext *o, AVFormatContext *oc, @@ -797,15 +801,23 @@ static OutputStream *new_subtitle_stream(Muxer *mux, OptionsContext *o, int sour ost = new_output_stream(mux, o, AVMEDIA_TYPE_SUBTITLE, source_index); st = ost->st; + MATCH_PER_STREAM_OPT(filter_scripts, str, ost->filters_script, mux->fc, st) + MATCH_PER_STREAM_OPT(filters, str, ost->filters, mux->fc, st) + if (ost->enc_ctx) { AVCodecContext *subtitle_enc = ost->enc_ctx; char *frame_size = NULL; + ost->enc_ctx->codec_type = AVMEDIA_TYPE_SUBTITLE; MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, mux->fc, st); if (frame_size && av_parse_video_size(&subtitle_enc->width, &subtitle_enc->height, frame_size) < 0) { av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size); exit_program(1); } + + ost->avfilter = get_ost_filters(o, mux->fc, ost); + if (!ost->avfilter) + exit_program(1); } return ost; @@ -819,8 +831,9 @@ static void init_output_filter(OutputFilter *ofilter, OptionsContext *o, switch (ofilter->type) { case AVMEDIA_TYPE_VIDEO: ost = new_video_stream(mux, o, -1); break; case AVMEDIA_TYPE_AUDIO: ost = new_audio_stream(mux, o, -1); break; + case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(mux, o, -1); break; default: - av_log(NULL, AV_LOG_FATAL, "Only video and audio filters are supported " + av_log(NULL, AV_LOG_FATAL, "Only video, audio and subtitle filters are supported " "currently.\n"); exit_program(1); } @@ -1765,7 +1778,8 @@ int of_open(OptionsContext *o, const char *filename) ist->processing_needed = 1; if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO || - ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) { + ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || + ost->st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) { err = init_simple_filtergraph(ist, ost); if (err < 0) { av_log(NULL, AV_LOG_ERROR, @@ -1811,6 +1825,10 @@ int of_open(OptionsContext *o, const char *filename) } else if (c->ch_layouts) { f->ch_layouts = c->ch_layouts; } + break; + case AVMEDIA_TYPE_SUBTITLE: + f->format = ost->enc_ctx->subtitle_type; + break; } } diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c index 9245e0281310c..2402a591f631a 100644 --- a/fftools/ffmpeg_opt.c +++ b/fftools/ffmpeg_opt.c @@ -915,6 +915,7 @@ static void add_input_streams(OptionsContext *o, AVFormatContext *ic) av_log(NULL, AV_LOG_FATAL, "Invalid canvas size: %s.\n", canvas_size); exit_program(1); } + ist->subtitle_kickoff.is_active = 1; break; } case AVMEDIA_TYPE_ATTACHMENT: diff --git a/fftools/ffplay.c b/fftools/ffplay.c index bcc00afe31647..4ec186a0b3d35 100644 --- a/fftools/ffplay.c +++ b/fftools/ffplay.c @@ -153,7 +153,6 @@ typedef struct Clock { /* Common struct for handling all types of decoded data and allocated render buffers. */ typedef struct Frame { AVFrame *frame; - AVSubtitle sub; int serial; double pts; /* presentation timestamp for the frame */ double duration; /* estimated duration of the frame */ @@ -574,7 +573,7 @@ static int decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, S return 0; } -static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) { +static int decoder_decode_frame(Decoder *d, AVFrame *frame) { int ret = AVERROR(EAGAIN); for (;;) { @@ -608,6 +607,9 @@ static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) { } } break; + case AVMEDIA_TYPE_SUBTITLE: + ret = avcodec_receive_frame(d->avctx, frame); + break; } if (ret == AVERROR_EOF) { d->finished = d->pkt_serial; @@ -640,25 +642,11 @@ static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) { av_packet_unref(d->pkt); } while (1); - if (d->avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) { - int got_frame = 0; - ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, d->pkt); - if (ret < 0) { - ret = AVERROR(EAGAIN); - } else { - if (got_frame && !d->pkt->data) { - d->packet_pending = 1; - } - ret = got_frame ? 0 : (d->pkt->data ? AVERROR(EAGAIN) : AVERROR_EOF); - } - av_packet_unref(d->pkt); + if (avcodec_send_packet(d->avctx, d->pkt) == AVERROR(EAGAIN)) { + av_log(d->avctx, AV_LOG_ERROR, "Receive_frame and send_packet both returned EAGAIN, which is an API violation.\n"); + d->packet_pending = 1; } else { - if (avcodec_send_packet(d->avctx, d->pkt) == AVERROR(EAGAIN)) { - av_log(d->avctx, AV_LOG_ERROR, "Receive_frame and send_packet both returned EAGAIN, which is an API violation.\n"); - d->packet_pending = 1; - } else { - av_packet_unref(d->pkt); - } + av_packet_unref(d->pkt); } } } @@ -671,7 +659,6 @@ static void decoder_destroy(Decoder *d) { static void frame_queue_unref_item(Frame *vp) { av_frame_unref(vp->frame); - avsubtitle_free(&vp->sub); } static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last) @@ -969,7 +956,7 @@ static void video_image_display(VideoState *is) if (frame_queue_nb_remaining(&is->subpq) > 0) { sp = frame_queue_peek(&is->subpq); - if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) { + if (vp->pts >= sp->pts) { if (!sp->uploaded) { uint8_t* pixels[4]; int pitch[4]; @@ -981,25 +968,27 @@ static void video_image_display(VideoState *is) if (realloc_texture(&is->sub_texture, SDL_PIXELFORMAT_ARGB8888, sp->width, sp->height, SDL_BLENDMODE_BLEND, 1) < 0) return; - for (i = 0; i < sp->sub.num_rects; i++) { - AVSubtitleRect *sub_rect = sp->sub.rects[i]; + for (i = 0; i < sp->frame->num_subtitle_areas; i++) { + AVSubtitleArea *area = sp->frame->subtitle_areas[i]; + SDL_Rect sdl_rect = { .x = area->x, .y = area->y, .w = area->w, .h = area->h }; - sub_rect->x = av_clip(sub_rect->x, 0, sp->width ); - sub_rect->y = av_clip(sub_rect->y, 0, sp->height); - sub_rect->w = av_clip(sub_rect->w, 0, sp->width - sub_rect->x); - sub_rect->h = av_clip(sub_rect->h, 0, sp->height - sub_rect->y); + area->x = av_clip(area->x, 0, sp->width ); + area->y = av_clip(area->y, 0, sp->height); + area->w = av_clip(area->w, 0, sp->width - area->x); + area->h = av_clip(area->h, 0, sp->height - area->y); is->sub_convert_ctx = sws_getCachedContext(is->sub_convert_ctx, - sub_rect->w, sub_rect->h, AV_PIX_FMT_PAL8, - sub_rect->w, sub_rect->h, AV_PIX_FMT_BGRA, + area->w, area->h, AV_PIX_FMT_PAL8, + area->w, area->h, AV_PIX_FMT_BGRA, 0, NULL, NULL, NULL); if (!is->sub_convert_ctx) { av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n"); return; } - if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)pixels, pitch)) { - sws_scale(is->sub_convert_ctx, (const uint8_t * const *)sub_rect->data, sub_rect->linesize, - 0, sub_rect->h, pixels, pitch); + if (!SDL_LockTexture(is->sub_texture, &sdl_rect, (void **)pixels, pitch)) { + const uint8_t* data[2] = { area->buf[0]->data, (uint8_t *)&area->pal }; + sws_scale(is->sub_convert_ctx, data, area->linesize, + 0, area->h, pixels, pitch); SDL_UnlockTexture(is->sub_texture); } } @@ -1028,16 +1017,18 @@ static void video_image_display(VideoState *is) #if USE_ONEPASS_SUBTITLE_RENDER SDL_RenderCopy(renderer, is->sub_texture, NULL, &rect); #else - int i; + unsigned i; double xratio = (double)rect.w / (double)sp->width; double yratio = (double)rect.h / (double)sp->height; - for (i = 0; i < sp->sub.num_rects; i++) { - SDL_Rect *sub_rect = (SDL_Rect*)sp->sub.rects[i]; - SDL_Rect target = {.x = rect.x + sub_rect->x * xratio, - .y = rect.y + sub_rect->y * yratio, - .w = sub_rect->w * xratio, - .h = sub_rect->h * yratio}; - SDL_RenderCopy(renderer, is->sub_texture, sub_rect, &target); + for (i = 0; i < sp->frame->num_subtitle_areas; i++) { + AVSubtitleArea *area = sp->frame->subtitle_areas[i]; + SDL_Rect sub_rect = { .x = area->x, .y = area->y, + .w = area->w, .h = area->h}; + SDL_Rect target = {.x = rect.x + sub_rect.x * xratio, + .y = rect.y + sub_rect.y * yratio, + .w = sub_rect.w * xratio, + .h = sub_rect.h * yratio}; + SDL_RenderCopy(renderer, is->sub_texture, &sub_rect, &target); } #endif } @@ -1641,19 +1632,20 @@ static void video_refresh(void *opaque, double *remaining_time) sp2 = NULL; if (sp->serial != is->subtitleq.serial - || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000))) - || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000)))) + || (is->vidclk.pts > (sp->pts + ((float) sp->frame->subtitle_timing.duration / AV_TIME_BASE))) + || (sp2 && is->vidclk.pts > (sp2->pts))) { if (sp->uploaded) { int i; - for (i = 0; i < sp->sub.num_rects; i++) { - AVSubtitleRect *sub_rect = sp->sub.rects[i]; + for (i = 0; i < sp->frame->num_subtitle_areas; i++) { + AVSubtitleArea *area = sp->frame->subtitle_areas[i]; + SDL_Rect sdl_rect = { .x = area->x, .y = area->y, .w = area->w, .h = area->h }; uint8_t *pixels; int pitch, j; - if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)&pixels, &pitch)) { - for (j = 0; j < sub_rect->h; j++, pixels += pitch) - memset(pixels, 0, sub_rect->w << 2); + if (!SDL_LockTexture(is->sub_texture, &sdl_rect, (void **)&pixels, &pitch)) { + for (j = 0; j < area->h; j++, pixels += pitch) + memset(pixels, 0, area->w << 2); SDL_UnlockTexture(is->sub_texture); } } @@ -1764,7 +1756,7 @@ static int get_video_frame(VideoState *is, AVFrame *frame) { int got_picture; - if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0) + if ((got_picture = decoder_decode_frame(&is->viddec, frame)) < 0) return -1; if (got_picture) { @@ -2040,7 +2032,7 @@ static int audio_thread(void *arg) return AVERROR(ENOMEM); do { - if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0) + if ((got_frame = decoder_decode_frame(&is->auddec, frame)) < 0) goto the_end; if (got_frame) { @@ -2237,14 +2229,14 @@ static int subtitle_thread(void *arg) if (!(sp = frame_queue_peek_writable(&is->subpq))) return 0; - if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0) + if ((got_subtitle = decoder_decode_frame(&is->subdec, sp->frame)) < 0) break; pts = 0; - if (got_subtitle && sp->sub.format == 0) { - if (sp->sub.pts != AV_NOPTS_VALUE) - pts = sp->sub.pts / (double)AV_TIME_BASE; + if (got_subtitle && sp->frame->format == AV_SUBTITLE_FMT_BITMAP) { + if (sp->frame->subtitle_timing.start_pts != AV_NOPTS_VALUE) + pts = (double)sp->frame->subtitle_timing.start_pts / (double)AV_TIME_BASE; sp->pts = pts; sp->serial = is->subdec.pkt_serial; sp->width = is->subdec.avctx->width; @@ -2254,7 +2246,7 @@ static int subtitle_thread(void *arg) /* now we can update the picture count */ frame_queue_push(&is->subpq); } else if (got_subtitle) { - avsubtitle_free(&sp->sub); + av_frame_free(&sp->frame); } } return 0; diff --git a/fftools/ffprobe.c b/fftools/ffprobe.c index 9b7e82fd8cb39..460b97940072a 100644 --- a/fftools/ffprobe.c +++ b/fftools/ffprobe.c @@ -2528,22 +2528,42 @@ static void show_packet(WriterContext *w, InputFile *ifile, AVPacket *pkt, int p fflush(stdout); } -static void show_subtitle(WriterContext *w, AVSubtitle *sub, AVStream *stream, +static void show_subtitle(WriterContext *w, AVFrame *sub, AVStream *stream, AVFormatContext *fmt_ctx) { AVBPrint pbuf; + const char *s; av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED); writer_print_section_header(w, SECTION_ID_SUBTITLE); print_str ("media_type", "subtitle"); - print_ts ("pts", sub->pts); - print_time("pts_time", sub->pts, &AV_TIME_BASE_Q); - print_int ("format", sub->format); - print_int ("start_display_time", sub->start_display_time); - print_int ("end_display_time", sub->end_display_time); - print_int ("num_rects", sub->num_rects); + print_ts ("pts", sub->subtitle_timing.start_pts); + print_time("pts_time", sub->subtitle_timing.start_pts, &AV_TIME_BASE_Q); + print_time("duration", sub->subtitle_timing.duration, &AV_TIME_BASE_Q); + + // Remain compatible with previous outputs + switch (sub->format) { + case AV_SUBTITLE_FMT_BITMAP: + print_int ("format", 0); + break; + case AV_SUBTITLE_FMT_TEXT: + print_int ("format", 1); + break; + case AV_SUBTITLE_FMT_ASS: + print_int ("format", 1); + break; + default: + print_int ("format", -1); + break; + } + + s = av_get_subtitle_fmt_name(sub->format); + if (s) print_str ("format_str", s); + else print_str_opt("format_str", "unknown"); + + print_int ("num_subtitle_rects", sub->num_subtitle_areas); writer_print_section_footer(w); @@ -2722,7 +2742,6 @@ static av_always_inline int process_frame(WriterContext *w, AVFormatContext *fmt_ctx = ifile->fmt_ctx; AVCodecContext *dec_ctx = ifile->streams[pkt->stream_index].dec_ctx; AVCodecParameters *par = ifile->streams[pkt->stream_index].st->codecpar; - AVSubtitle sub; int ret = 0, got_frame = 0; clear_log(1); @@ -2730,6 +2749,7 @@ static av_always_inline int process_frame(WriterContext *w, switch (par->codec_type) { case AVMEDIA_TYPE_VIDEO: case AVMEDIA_TYPE_AUDIO: + case AVMEDIA_TYPE_SUBTITLE: if (*packet_new) { ret = avcodec_send_packet(dec_ctx, pkt); if (ret == AVERROR(EAGAIN)) { @@ -2748,12 +2768,6 @@ static av_always_inline int process_frame(WriterContext *w, } } break; - - case AVMEDIA_TYPE_SUBTITLE: - if (*packet_new) - ret = avcodec_decode_subtitle2(dec_ctx, &sub, &got_frame, pkt); - *packet_new = 0; - break; default: *packet_new = 0; } @@ -2768,12 +2782,11 @@ static av_always_inline int process_frame(WriterContext *w, nb_streams_frames[pkt->stream_index]++; if (do_show_frames) if (is_sub) - show_subtitle(w, &sub, ifile->streams[pkt->stream_index].st, fmt_ctx); + show_subtitle(w, frame, ifile->streams[pkt->stream_index].st, fmt_ctx); else show_frame(w, frame, ifile->streams[pkt->stream_index].st, fmt_ctx); - if (is_sub) - avsubtitle_free(&sub); } + return got_frame || *packet_new; } diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 90c7f113a3a3f..58544b40bacbc 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -224,10 +224,10 @@ OBJS-$(CONFIG_APNG_DECODER) += png.o pngdec.o pngdsp.o OBJS-$(CONFIG_APNG_ENCODER) += png.o pngenc.o OBJS-$(CONFIG_ARBC_DECODER) += arbc.o OBJS-$(CONFIG_ARGO_DECODER) += argo.o -OBJS-$(CONFIG_SSA_DECODER) += assdec.o ass.o -OBJS-$(CONFIG_SSA_ENCODER) += assenc.o ass.o -OBJS-$(CONFIG_ASS_DECODER) += assdec.o ass.o -OBJS-$(CONFIG_ASS_ENCODER) += assenc.o ass.o +OBJS-$(CONFIG_SSA_DECODER) += assdec.o +OBJS-$(CONFIG_SSA_ENCODER) += assenc.o +OBJS-$(CONFIG_ASS_DECODER) += assdec.o +OBJS-$(CONFIG_ASS_ENCODER) += assenc.o OBJS-$(CONFIG_ASV1_DECODER) += asvdec.o asv.o mpeg12data.o OBJS-$(CONFIG_ASV1_ENCODER) += asvenc.o asv.o mpeg12data.o OBJS-$(CONFIG_ASV2_DECODER) += asvdec.o asv.o mpeg12data.o @@ -269,7 +269,7 @@ OBJS-$(CONFIG_BRENDER_PIX_DECODER) += brenderpix.o OBJS-$(CONFIG_C93_DECODER) += c93.o OBJS-$(CONFIG_CAVS_DECODER) += cavs.o cavsdec.o cavsdsp.o \ cavsdata.o -OBJS-$(CONFIG_CCAPTION_DECODER) += ccaption_dec.o ass.o +OBJS-$(CONFIG_CCAPTION_DECODER) += ccaption_dec.o OBJS-$(CONFIG_CDGRAPHICS_DECODER) += cdgraphics.o OBJS-$(CONFIG_CDTOONS_DECODER) += cdtoons.o OBJS-$(CONFIG_CDXL_DECODER) += cdxl.o @@ -449,7 +449,7 @@ OBJS-$(CONFIG_INTERPLAY_ACM_DECODER) += interplayacm.o OBJS-$(CONFIG_INTERPLAY_DPCM_DECODER) += dpcm.o OBJS-$(CONFIG_INTERPLAY_VIDEO_DECODER) += interplayvideo.o OBJS-$(CONFIG_IPU_DECODER) += mpeg12dec.o mpeg12.o mpeg12data.o -OBJS-$(CONFIG_JACOSUB_DECODER) += jacosubdec.o ass.o +OBJS-$(CONFIG_JACOSUB_DECODER) += jacosubdec.o OBJS-$(CONFIG_JPEG2000_ENCODER) += j2kenc.o mqcenc.o mqc.o jpeg2000.o \ jpeg2000dwt.o OBJS-$(CONFIG_JPEG2000_DECODER) += jpeg2000dec.o jpeg2000.o jpeg2000dsp.o \ @@ -472,7 +472,7 @@ OBJS-$(CONFIG_MDEC_DECODER) += mdec.o mpeg12.o mpeg12data.o OBJS-$(CONFIG_MEDIA100_DECODER) += media100.o OBJS-$(CONFIG_METASOUND_DECODER) += metasound.o metasound_data.o \ twinvq.o -OBJS-$(CONFIG_MICRODVD_DECODER) += microdvddec.o ass.o +OBJS-$(CONFIG_MICRODVD_DECODER) += microdvddec.o OBJS-$(CONFIG_MIMIC_DECODER) += mimic.o OBJS-$(CONFIG_MISC4_DECODER) += misc4.o OBJS-$(CONFIG_MJPEG_DECODER) += mjpegdec.o mjpegdec_common.o @@ -488,8 +488,8 @@ OBJS-$(CONFIG_MLP_ENCODER) += mlpenc.o mlp.o OBJS-$(CONFIG_MMVIDEO_DECODER) += mmvideo.o OBJS-$(CONFIG_MOBICLIP_DECODER) += mobiclip.o OBJS-$(CONFIG_MOTIONPIXELS_DECODER) += motionpixels.o -OBJS-$(CONFIG_MOVTEXT_DECODER) += movtextdec.o ass.o -OBJS-$(CONFIG_MOVTEXT_ENCODER) += movtextenc.o ass_split.o +OBJS-$(CONFIG_MOVTEXT_DECODER) += movtextdec.o +OBJS-$(CONFIG_MOVTEXT_ENCODER) += movtextenc.o OBJS-$(CONFIG_MP1_DECODER) += mpegaudiodec_fixed.o OBJS-$(CONFIG_MP1FLOAT_DECODER) += mpegaudiodec_float.o OBJS-$(CONFIG_MP2_DECODER) += mpegaudiodec_fixed.o @@ -530,7 +530,7 @@ OBJS-$(CONFIG_MPEG4_MEDIACODEC_DECODER) += mediacodecdec.o OBJS-$(CONFIG_MPEG4_OMX_ENCODER) += omx.o OBJS-$(CONFIG_MPEG4_V4L2M2M_DECODER) += v4l2_m2m_dec.o OBJS-$(CONFIG_MPEG4_V4L2M2M_ENCODER) += v4l2_m2m_enc.o -OBJS-$(CONFIG_MPL2_DECODER) += mpl2dec.o ass.o +OBJS-$(CONFIG_MPL2_DECODER) += mpl2dec.o OBJS-$(CONFIG_MSA1_DECODER) += mss3.o OBJS-$(CONFIG_MSCC_DECODER) += mscc.o OBJS-$(CONFIG_MSNSIREN_DECODER) += siren.o @@ -580,7 +580,7 @@ OBJS-$(CONFIG_PHM_ENCODER) += pnmenc.o float2half.o OBJS-$(CONFIG_PHOTOCD_DECODER) += photocd.o OBJS-$(CONFIG_PICTOR_DECODER) += pictordec.o cga_data.o OBJS-$(CONFIG_PIXLET_DECODER) += pixlet.o -OBJS-$(CONFIG_PJS_DECODER) += textdec.o ass.o +OBJS-$(CONFIG_PJS_DECODER) += textdec.o OBJS-$(CONFIG_PNG_DECODER) += png.o pngdec.o pngdsp.o OBJS-$(CONFIG_PNG_ENCODER) += png.o pngenc.o OBJS-$(CONFIG_PPM_DECODER) += pnmdec.o pnm.o @@ -615,7 +615,7 @@ OBJS-$(CONFIG_RALF_DECODER) += ralf.o OBJS-$(CONFIG_RASC_DECODER) += rasc.o OBJS-$(CONFIG_RAWVIDEO_DECODER) += rawdec.o OBJS-$(CONFIG_RAWVIDEO_ENCODER) += rawenc.o -OBJS-$(CONFIG_REALTEXT_DECODER) += realtextdec.o ass.o +OBJS-$(CONFIG_REALTEXT_DECODER) += realtextdec.o OBJS-$(CONFIG_RL2_DECODER) += rl2.o OBJS-$(CONFIG_ROQ_DECODER) += roqvideodec.o roqvideo.o OBJS-$(CONFIG_ROQ_ENCODER) += roqvideoenc.o roqvideo.o elbg.o @@ -630,7 +630,7 @@ OBJS-$(CONFIG_RV20_DECODER) += rv10.o OBJS-$(CONFIG_RV20_ENCODER) += rv20enc.o OBJS-$(CONFIG_RV30_DECODER) += rv30.o rv34.o rv30dsp.o OBJS-$(CONFIG_RV40_DECODER) += rv40.o rv34.o rv40dsp.o -OBJS-$(CONFIG_SAMI_DECODER) += samidec.o ass.o htmlsubtitles.o +OBJS-$(CONFIG_SAMI_DECODER) += samidec.o htmlsubtitles.o OBJS-$(CONFIG_S302M_DECODER) += s302m.o OBJS-$(CONFIG_S302M_ENCODER) += s302menc.o OBJS-$(CONFIG_SANM_DECODER) += sanm.o @@ -666,13 +666,13 @@ OBJS-$(CONFIG_SPEEDHQ_ENCODER) += speedhq.o mpeg12data.o mpeg12enc.o spe OBJS-$(CONFIG_SPEEX_DECODER) += speexdec.o OBJS-$(CONFIG_SP5X_DECODER) += sp5xdec.o OBJS-$(CONFIG_SRGC_DECODER) += mscc.o -OBJS-$(CONFIG_SRT_DECODER) += srtdec.o ass.o htmlsubtitles.o -OBJS-$(CONFIG_SRT_ENCODER) += srtenc.o ass_split.o -OBJS-$(CONFIG_STL_DECODER) += textdec.o ass.o -OBJS-$(CONFIG_SUBRIP_DECODER) += srtdec.o ass.o htmlsubtitles.o -OBJS-$(CONFIG_SUBRIP_ENCODER) += srtenc.o ass_split.o -OBJS-$(CONFIG_SUBVIEWER1_DECODER) += textdec.o ass.o -OBJS-$(CONFIG_SUBVIEWER_DECODER) += subviewerdec.o ass.o +OBJS-$(CONFIG_SRT_DECODER) += srtdec.o htmlsubtitles.o +OBJS-$(CONFIG_SRT_ENCODER) += srtenc.o +OBJS-$(CONFIG_STL_DECODER) += textdec.o +OBJS-$(CONFIG_SUBRIP_DECODER) += srtdec.o htmlsubtitles.o +OBJS-$(CONFIG_SUBRIP_ENCODER) += srtenc.o +OBJS-$(CONFIG_SUBVIEWER1_DECODER) += textdec.o +OBJS-$(CONFIG_SUBVIEWER_DECODER) += subviewerdec.o OBJS-$(CONFIG_SUNRAST_DECODER) += sunrast.o OBJS-$(CONFIG_SUNRAST_ENCODER) += sunrastenc.o OBJS-$(CONFIG_LIBRSVG_DECODER) += librsvgdec.o @@ -682,8 +682,8 @@ OBJS-$(CONFIG_SVQ1_DECODER) += svq1dec.o svq1.o h263data.o OBJS-$(CONFIG_SVQ1_ENCODER) += svq1enc.o svq1.o h263data.o \ h263.o ituh263enc.o OBJS-$(CONFIG_SVQ3_DECODER) += svq3.o mpegutils.o h264data.o -OBJS-$(CONFIG_TEXT_DECODER) += textdec.o ass.o -OBJS-$(CONFIG_TEXT_ENCODER) += srtenc.o ass_split.o +OBJS-$(CONFIG_TEXT_DECODER) += textdec.o +OBJS-$(CONFIG_TEXT_ENCODER) += srtenc.o OBJS-$(CONFIG_TAK_DECODER) += takdec.o tak.o takdsp.o OBJS-$(CONFIG_TARGA_DECODER) += targa.o OBJS-$(CONFIG_TARGA_ENCODER) += targaenc.o rle.o @@ -703,7 +703,7 @@ OBJS-$(CONFIG_TSCC_DECODER) += tscc.o msrledec.o OBJS-$(CONFIG_TSCC2_DECODER) += tscc2.o OBJS-$(CONFIG_TTA_DECODER) += tta.o ttadata.o ttadsp.o OBJS-$(CONFIG_TTA_ENCODER) += ttaenc.o ttaencdsp.o ttadata.o -OBJS-$(CONFIG_TTML_ENCODER) += ttmlenc.o ass_split.o +OBJS-$(CONFIG_TTML_ENCODER) += ttmlenc.o OBJS-$(CONFIG_TWINVQ_DECODER) += twinvqdec.o twinvq.o metasound_data.o OBJS-$(CONFIG_TXD_DECODER) += txd.o OBJS-$(CONFIG_ULTI_DECODER) += ulti.o @@ -759,7 +759,7 @@ OBJS-$(CONFIG_VP9_MEDIACODEC_DECODER) += mediacodecdec.o OBJS-$(CONFIG_VP9_RKMPP_DECODER) += rkmppdec.o OBJS-$(CONFIG_VP9_VAAPI_ENCODER) += vaapi_encode_vp9.o OBJS-$(CONFIG_VP9_QSV_ENCODER) += qsvenc_vp9.o -OBJS-$(CONFIG_VPLAYER_DECODER) += textdec.o ass.o +OBJS-$(CONFIG_VPLAYER_DECODER) += textdec.o OBJS-$(CONFIG_VP9_V4L2M2M_DECODER) += v4l2_m2m_dec.o OBJS-$(CONFIG_VQA_DECODER) += vqavideo.o OBJS-$(CONFIG_VQC_DECODER) += vqcdec.o @@ -769,8 +769,8 @@ OBJS-$(CONFIG_WBMP_DECODER) += wbmpdec.o OBJS-$(CONFIG_WBMP_ENCODER) += wbmpenc.o OBJS-$(CONFIG_WCMV_DECODER) += wcmv.o OBJS-$(CONFIG_WEBP_DECODER) += webp.o -OBJS-$(CONFIG_WEBVTT_DECODER) += webvttdec.o ass.o -OBJS-$(CONFIG_WEBVTT_ENCODER) += webvttenc.o ass_split.o +OBJS-$(CONFIG_WEBVTT_DECODER) += webvttdec.o +OBJS-$(CONFIG_WEBVTT_ENCODER) += webvttenc.o OBJS-$(CONFIG_WMALOSSLESS_DECODER) += wmalosslessdec.o wma_common.o OBJS-$(CONFIG_WMAPRO_DECODER) += wmaprodec.o wma.o wma_common.o OBJS-$(CONFIG_WMAV1_DECODER) += wmadec.o wma.o wma_common.o aactab.o @@ -1057,7 +1057,7 @@ OBJS-$(CONFIG_PCM_ALAW_AT_ENCODER) += audiotoolboxenc.o OBJS-$(CONFIG_PCM_MULAW_AT_ENCODER) += audiotoolboxenc.o OBJS-$(CONFIG_LIBAOM_AV1_DECODER) += libaomdec.o libaom.o OBJS-$(CONFIG_LIBAOM_AV1_ENCODER) += libaomenc.o libaom.o -OBJS-$(CONFIG_LIBARIBB24_DECODER) += libaribb24.o ass.o +OBJS-$(CONFIG_LIBARIBB24_DECODER) += libaribb24.o OBJS-$(CONFIG_LIBCELT_DECODER) += libcelt_dec.o OBJS-$(CONFIG_LIBCODEC2_DECODER) += libcodec2.o OBJS-$(CONFIG_LIBCODEC2_ENCODER) += libcodec2.o @@ -1110,7 +1110,7 @@ OBJS-$(CONFIG_LIBX265_ENCODER) += libx265.o OBJS-$(CONFIG_LIBXAVS_ENCODER) += libxavs.o OBJS-$(CONFIG_LIBXAVS2_ENCODER) += libxavs2.o OBJS-$(CONFIG_LIBXVID_ENCODER) += libxvid.o -OBJS-$(CONFIG_LIBZVBI_TELETEXT_DECODER) += libzvbi-teletextdec.o ass.o +OBJS-$(CONFIG_LIBZVBI_TELETEXT_DECODER) += libzvbi-teletextdec.o # parsers OBJS-$(CONFIG_AAC_LATM_PARSER) += latm_parser.o diff --git a/libavcodec/ass.h b/libavcodec/ass.h index 4dffe923d9faf..43c5ad651a989 100644 --- a/libavcodec/ass.h +++ b/libavcodec/ass.h @@ -23,124 +23,73 @@ #define AVCODEC_ASS_H #include "avcodec.h" -#include "libavutil/bprint.h" - -#define ASS_DEFAULT_PLAYRESX 384 -#define ASS_DEFAULT_PLAYRESY 288 - -/** - * @name Default values for ASS style - * @{ - */ -#define ASS_DEFAULT_FONT "Arial" -#define ASS_DEFAULT_FONT_SIZE 16 -#define ASS_DEFAULT_COLOR 0xffffff -#define ASS_DEFAULT_BACK_COLOR 0 -#define ASS_DEFAULT_BOLD 0 -#define ASS_DEFAULT_ITALIC 0 -#define ASS_DEFAULT_UNDERLINE 0 -#define ASS_DEFAULT_ALIGNMENT 2 -#define ASS_DEFAULT_BORDERSTYLE 1 -/** @} */ +#include "libavutil/ass_internal.h" typedef struct FFASSDecoderContext { int readorder; } FFASSDecoderContext; -/** - * Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS. - * Can specify all fields explicitly - * - * @param avctx pointer to the AVCodecContext - * @param play_res_x subtitle frame width - * @param play_res_y subtitle frame height - * @param font name of the default font face to use - * @param font_size default font size to use - * @param primary_color default text color to use (ABGR) - * @param secondary_color default secondary text color to use (ABGR) - * @param outline_color default outline color to use (ABGR) - * @param back_color default background color to use (ABGR) - * @param bold 1 for bold text, 0 for normal text - * @param italic 1 for italic text, 0 for normal text - * @param underline 1 for underline text, 0 for normal text - * @param border_style 1 for outline, 3 for opaque box - * @param alignment position of the text (left, center, top...), defined after - * the layout of the numpad (1-3 sub, 4-6 mid, 7-9 top) - * @return >= 0 on success otherwise an error code <0 - */ -int ff_ass_subtitle_header_full(AVCodecContext *avctx, +static inline int ff_ass_subtitle_header_full(AVCodecContext *avctx, int play_res_x, int play_res_y, const char *font, int font_size, int primary_color, int secondary_color, int outline_color, int back_color, int bold, int italic, int underline, - int border_style, int alignment); -/** - * Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS. - * - * @param avctx pointer to the AVCodecContext - * @param font name of the default font face to use - * @param font_size default font size to use - * @param color default text color to use (ABGR) - * @param back_color default background color to use (ABGR) - * @param bold 1 for bold text, 0 for normal text - * @param italic 1 for italic text, 0 for normal text - * @param underline 1 for underline text, 0 for normal text - * @param alignment position of the text (left, center, top...), defined after - * the layout of the numpad (1-3 sub, 4-6 mid, 7-9 top) - * @return >= 0 on success otherwise an error code <0 - */ -int ff_ass_subtitle_header(AVCodecContext *avctx, - const char *font, int font_size, - int color, int back_color, - int bold, int italic, int underline, - int border_style, int alignment); + int border_style, int alignment) +{ + avctx->subtitle_header = (uint8_t *)avpriv_ass_get_subtitle_header_full( + play_res_x, play_res_y, font, font_size, + primary_color, secondary_color, outline_color, + back_color, bold,italic,underline,border_style,alignment, + !(avctx->flags & AV_CODEC_FLAG_BITEXACT)); -/** - * Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS - * with default style. - * - * @param avctx pointer to the AVCodecContext - * @return >= 0 on success otherwise an error code <0 - */ -int ff_ass_subtitle_header_default(AVCodecContext *avctx); + if (!avctx->subtitle_header) + return AVERROR(ENOMEM); + avctx->subtitle_header_size = strlen((char *)avctx->subtitle_header); + return 0; +} -/** - * Craft an ASS dialog string. - */ -char *ff_ass_get_dialog(int readorder, int layer, const char *style, - const char *speaker, const char *text); +static inline int ff_ass_subtitle_header_default(AVCodecContext *avctx) +{ + avctx->subtitle_header = (uint8_t *)avpriv_ass_get_subtitle_header_default(!(avctx->flags & AV_CODEC_FLAG_BITEXACT)); -/** - * Add an ASS dialog to a subtitle. - */ -int ff_ass_add_rect(AVSubtitle *sub, const char *dialog, - int readorder, int layer, const char *style, - const char *speaker); + if (!avctx->subtitle_header) + return AVERROR(ENOMEM); + avctx->subtitle_header_size = strlen((char *)avctx->subtitle_header); + return 0; +} + +static inline void ff_ass_decoder_flush(AVCodecContext *avctx) +{ + FFASSDecoderContext *s = avctx->priv_data; + if (!(avctx->flags2 & AV_CODEC_FLAG2_RO_FLUSH_NOOP)) + s->readorder = 0; +} /** * Add an ASS dialog to a subtitle. */ -int ff_ass_add_rect2(AVSubtitle *sub, const char *dialog, - int readorder, int layer, const char *style, - const char *speaker, unsigned *nb_rect_allocated); +static inline int avpriv_ass_add_rect(AVSubtitle *sub, const char *dialog, + int readorder, int layer, const char *style, + const char *speaker) +{ + char *ass_str; + AVSubtitleRect **rects; -/** - * Helper to flush a text subtitles decoder making use of the - * FFASSDecoderContext. - */ -void ff_ass_decoder_flush(AVCodecContext *avctx); + rects = av_realloc_array(sub->rects, sub->num_rects+1, sizeof(*sub->rects)); + if (!rects) + return AVERROR(ENOMEM); + sub->rects = rects; + rects[sub->num_rects] = av_mallocz(sizeof(*rects[0])); + if (!rects[sub->num_rects]) + return AVERROR(ENOMEM); + rects[sub->num_rects]->type = AV_SUBTITLE_FMT_ASS; + ass_str = avpriv_ass_get_dialog(readorder, layer, style, speaker, dialog); + if (!ass_str) + return AVERROR(ENOMEM); + rects[sub->num_rects]->ass = ass_str; + sub->num_rects++; + return 0; +} -/** - * Escape a text subtitle using ASS syntax into an AVBPrint buffer. - * Newline characters will be escaped to \N. - * - * @param buf pointer to an initialized AVBPrint buffer - * @param p source text - * @param size size of the source text - * @param linebreaks additional newline chars, which will be escaped to \N - * @param keep_ass_markup braces and backslash will not be escaped if set - */ -void ff_ass_bprint_text_event(AVBPrint *buf, const char *p, int size, - const char *linebreaks, int keep_ass_markup); #endif /* AVCODEC_ASS_H */ diff --git a/libavcodec/ass_split.h b/libavcodec/ass_split.h deleted file mode 100644 index a45fb9b8a117d..0000000000000 --- a/libavcodec/ass_split.h +++ /dev/null @@ -1,191 +0,0 @@ -/* - * SSA/ASS spliting functions - * Copyright (c) 2010 Aurelien Jacobs - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#ifndef AVCODEC_ASS_SPLIT_H -#define AVCODEC_ASS_SPLIT_H - -/** - * fields extracted from the [Script Info] section - */ -typedef struct { - char *script_type; /**< SSA script format version (eg. v4.00) */ - char *collisions; /**< how subtitles are moved to prevent collisions */ - int play_res_x; /**< video width that ASS coords are referring to */ - int play_res_y; /**< video height that ASS coords are referring to */ - float timer; /**< time multiplier to apply to SSA clock (in %) */ -} ASSScriptInfo; - -/** - * fields extracted from the [V4(+) Styles] section - */ -typedef struct { - char *name; /**< name of the tyle (case sensitive) */ - char *font_name; /**< font face (case sensitive) */ - int font_size; /**< font height */ - int primary_color; /**< color that a subtitle will normally appear in */ - int secondary_color; - int outline_color; /**< color for outline in ASS, called tertiary in SSA */ - int back_color; /**< color of the subtitle outline or shadow */ - int bold; /**< whether text is bold (1) or not (0) */ - int italic; /**< whether text is italic (1) or not (0) */ - int underline; /**< whether text is underlined (1) or not (0) */ - int strikeout; - float scalex; - float scaley; - float spacing; - float angle; - int border_style; - float outline; - float shadow; - int alignment; /**< position of the text (left, center, top...), - defined after the layout of the numpad - (1-3 sub, 4-6 mid, 7-9 top) */ - int margin_l; - int margin_r; - int margin_v; - int alpha_level; - int encoding; -} ASSStyle; - -/** - * fields extracted from the [Events] section - */ -typedef struct { - int readorder; - int layer; /**< higher numbered layers are drawn over lower numbered */ - int start; /**< start time of the dialog in centiseconds */ - int end; /**< end time of the dialog in centiseconds */ - char *style; /**< name of the ASSStyle to use with this dialog */ - char *name; - int margin_l; - int margin_r; - int margin_v; - char *effect; - char *text; /**< actual text which will be displayed as a subtitle, - can include style override control codes (see - ff_ass_split_override_codes()) */ -} ASSDialog; - -/** - * structure containing the whole split ASS data - */ -typedef struct { - ASSScriptInfo script_info; /**< general information about the SSA script*/ - ASSStyle *styles; /**< array of split out styles */ - int styles_count; /**< number of ASSStyle in the styles array */ - ASSDialog *dialogs; /**< array of split out dialogs */ - int dialogs_count; /**< number of ASSDialog in the dialogs array*/ -} ASS; - -/** - * This struct can be casted to ASS to access to the split data. - */ -typedef struct ASSSplitContext ASSSplitContext; - -/** - * Split a full ASS file or a ASS header from a string buffer and store - * the split structure in a newly allocated context. - * - * @param buf String containing the ASS formatted data. - * @return Newly allocated struct containing split data. - */ -ASSSplitContext *ff_ass_split(const char *buf); - -/** - * Free a dialogue obtained from ff_ass_split_dialog(). - */ -void ff_ass_free_dialog(ASSDialog **dialogp); - -/** - * Split one ASS Dialogue line from a string buffer. - * - * @param ctx Context previously initialized by ff_ass_split(). - * @param buf String containing the ASS "Dialogue" line. - * @return Pointer to the split ASSDialog. Must be freed with ff_ass_free_dialog() - */ -ASSDialog *ff_ass_split_dialog(ASSSplitContext *ctx, const char *buf); - -/** - * Free all the memory allocated for an ASSSplitContext. - * - * @param ctx Context previously initialized by ff_ass_split(). - */ -void ff_ass_split_free(ASSSplitContext *ctx); - - -/** - * Set of callback functions corresponding to each override codes that can - * be encountered in a "Dialogue" Text field. - */ -typedef struct { - /** - * @defgroup ass_styles ASS styles - * @{ - */ - void (*text)(void *priv, const char *text, int len); - void (*new_line)(void *priv, int forced); - void (*style)(void *priv, char style, int close); - void (*color)(void *priv, unsigned int /* color */, unsigned int color_id); - void (*alpha)(void *priv, int alpha, int alpha_id); - void (*font_name)(void *priv, const char *name); - void (*font_size)(void *priv, int size); - void (*alignment)(void *priv, int alignment); - void (*cancel_overrides)(void *priv, const char *style); - /** @} */ - - /** - * @defgroup ass_functions ASS functions - * @{ - */ - void (*move)(void *priv, int x1, int y1, int x2, int y2, int t1, int t2); - void (*origin)(void *priv, int x, int y); - /** @} */ - - /** - * @defgroup ass_end end of Dialogue Event - * @{ - */ - void (*end)(void *priv); - /** @} */ -} ASSCodesCallbacks; - -/** - * Split override codes out of a ASS "Dialogue" Text field. - * - * @param callbacks Set of callback functions called for each override code - * encountered. - * @param priv Opaque pointer passed to the callback functions. - * @param buf The ASS "Dialogue" Text field to split. - * @return >= 0 on success otherwise an error code <0 - */ -int ff_ass_split_override_codes(const ASSCodesCallbacks *callbacks, void *priv, - const char *buf); - -/** - * Find an ASSStyle structure by its name. - * - * @param ctx Context previously initialized by ff_ass_split(). - * @param style name of the style to search for. - * @return the ASSStyle corresponding to style, or NULL if style can't be found - */ -ASSStyle *ff_ass_style_get(ASSSplitContext *ctx, const char *style); - -#endif /* AVCODEC_ASS_SPLIT_H */ diff --git a/libavcodec/assdec.c b/libavcodec/assdec.c index 89d7b51894b26..a274d7e92e8fa 100644 --- a/libavcodec/assdec.c +++ b/libavcodec/assdec.c @@ -22,9 +22,9 @@ #include #include "avcodec.h" -#include "ass.h" #include "codec_internal.h" #include "config_components.h" +#include "libavutil/ass_internal.h" #include "libavutil/internal.h" #include "libavutil/mem.h" @@ -53,7 +53,7 @@ static int ass_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, if (!sub->rects[0]) return AVERROR(ENOMEM); sub->num_rects = 1; - sub->rects[0]->type = SUBTITLE_ASS; + sub->rects[0]->type = AV_SUBTITLE_FMT_ASS; sub->rects[0]->ass = av_strdup(avpkt->data); if (!sub->rects[0]->ass) return AVERROR(ENOMEM); diff --git a/libavcodec/assenc.c b/libavcodec/assenc.c index db6fd25dd7cc4..45fd5a217f3d5 100644 --- a/libavcodec/assenc.c +++ b/libavcodec/assenc.c @@ -24,68 +24,193 @@ #include #include "avcodec.h" -#include "ass.h" #include "codec_internal.h" +#include "encode.h" +#include "libavutil/ass_internal.h" #include "libavutil/avstring.h" #include "libavutil/internal.h" #include "libavutil/mem.h" +typedef struct { + AVCodecContext *avctx; + AVFrame* current_frame; + int have_frame; + int current_area; +} AssEncContext; + +static void check_write_header(AVCodecContext* avctx, const AVFrame* frame) +{ + if (avctx->extradata_size) + return; + + if (frame->subtitle_header && frame->subtitle_header->size > 0) { + const char* subtitle_header = (char*)frame->subtitle_header->data; + avctx->extradata_size = strlen(subtitle_header); + avctx->extradata = av_mallocz(frame->subtitle_header->size + 1); + memcpy(avctx->extradata, subtitle_header, avctx->extradata_size); + avctx->extradata[avctx->extradata_size] = 0; + } + + if (!avctx->extradata_size) { + const char* subtitle_header = avpriv_ass_get_subtitle_header_default(0); + if (!subtitle_header) + return; + + avctx->extradata_size = strlen(subtitle_header); + avctx->extradata = av_mallocz(avctx->extradata_size + 1); + memcpy(avctx->extradata, subtitle_header, avctx->extradata_size); + avctx->extradata[avctx->extradata_size] = 0; + av_freep(&subtitle_header); + } +} + static av_cold int ass_encode_init(AVCodecContext *avctx) { - avctx->extradata = av_malloc(avctx->subtitle_header_size + 1); - if (!avctx->extradata) - return AVERROR(ENOMEM); - memcpy(avctx->extradata, avctx->subtitle_header, avctx->subtitle_header_size); - avctx->extradata_size = avctx->subtitle_header_size; - avctx->extradata[avctx->extradata_size] = 0; + AssEncContext *s = avctx->priv_data; + + if (avctx->subtitle_header_size) { + avctx->extradata = av_malloc(avctx->subtitle_header_size + 1); + if (!avctx->extradata) + return AVERROR(ENOMEM); + memcpy(avctx->extradata, avctx->subtitle_header, avctx->subtitle_header_size); + avctx->extradata_size = avctx->subtitle_header_size; + avctx->extradata[avctx->extradata_size] = 0; + } + + s->current_frame = av_frame_alloc(); + return 0; +} + +static av_cold int ass_encode_close(AVCodecContext *avctx) +{ + AssEncContext *s = avctx->priv_data; + av_frame_free(&s->current_frame); return 0; } -static int ass_encode_frame(AVCodecContext *avctx, - unsigned char *buf, int bufsize, - const AVSubtitle *sub) +////static int ass_encode_frame(AVCodecContext* avctx, AVPacket* avpkt, +//// const AVFrame* frame, int* got_packet) +////{ +//// int ret; +//// size_t req_len = 0, total_len = 0; +//// +//// check_write_header(avctx, frame); +//// +//// for (unsigned i = 0; i < frame->num_subtitle_areas; i++) { +//// const char *ass = frame->subtitle_areas[i]->ass; +//// +//// if (frame->subtitle_areas[i]->type != AV_SUBTITLE_FMT_ASS) { +//// av_log(avctx, AV_LOG_ERROR, "Only AV_SUBTITLE_FMT_ASS type supported.\n"); +//// return AVERROR(EINVAL); +//// } +//// +//// if (ass) +//// req_len += strlen(ass); +//// } +//// +//// ret = ff_get_encode_buffer(avctx, avpkt, req_len + 1, 0); +//// if (ret < 0) { +//// av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); +//// return ret; +//// } +//// +//// for (unsigned i = 0; i < frame->num_subtitle_areas; i++) { +//// const char *ass = frame->subtitle_areas[i]->ass; +//// +//// if (ass) { +//// size_t len = av_strlcpy((char *)avpkt->data + total_len, ass, avpkt->size - total_len); +//// total_len += len; +//// } +//// } +//// +//// avpkt->size = total_len; +//// *got_packet = total_len > 0; +//// +//// return 0; +////} + +static int ass_receive_packet(AVCodecContext *avctx, AVPacket *avpkt) { - int i, len, total_len = 0; + AssEncContext *s = avctx->priv_data; + int ret; + + if (!s->have_frame) { + s->current_area = 0; + ret = ff_encode_get_frame(avctx, s->current_frame); + + if (ret < 0) { + av_frame_unref(s->current_frame); + return ret; + } + + s->have_frame = 1; + } - for (i=0; inum_rects; i++) { - const char *ass = sub->rects[i]->ass; + check_write_header(avctx, s->current_frame); - if (sub->rects[i]->type != SUBTITLE_ASS) { - av_log(avctx, AV_LOG_ERROR, "Only SUBTITLE_ASS type supported.\n"); + if (s->current_frame->repeat_sub) { + av_frame_unref(s->current_frame); + s->have_frame = 0; + return AVERROR(EAGAIN); + } + + if (s->current_area < s->current_frame->num_subtitle_areas) { + const AVSubtitleArea *area = s->current_frame->subtitle_areas[s->current_area]; + const char *ass = area->ass; + + if (area->type != AV_SUBTITLE_FMT_ASS) { + av_log(avctx, AV_LOG_ERROR, "Only AV_SUBTITLE_FMT_ASS type supported.\n"); return AVERROR(EINVAL); } - len = av_strlcpy(buf+total_len, ass, bufsize-total_len); + if (ass) { + size_t len = strlen(ass); + + ret = ff_get_encode_buffer(avctx, avpkt, len + 1, 0); + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); + return ret; + } + + len = av_strlcpy((char *)avpkt->data, ass, avpkt->size); - if (len > bufsize-total_len-1) { - av_log(avctx, AV_LOG_ERROR, "Buffer too small for ASS event.\n"); - return AVERROR_BUFFER_TOO_SMALL; + avpkt->size = len; } - total_len += len; + s->current_area++; } - return total_len; + if (s->current_area < s->current_frame->num_subtitle_areas) + return 0; + + av_frame_unref(s->current_frame); + s->have_frame = 0; + + return 0; } #if CONFIG_SSA_ENCODER const FFCodec ff_ssa_encoder = { - .p.name = "ssa", - CODEC_LONG_NAME("ASS (Advanced SubStation Alpha) subtitle"), - .p.type = AVMEDIA_TYPE_SUBTITLE, - .p.id = AV_CODEC_ID_ASS, - .init = ass_encode_init, - FF_CODEC_ENCODE_SUB_CB(ass_encode_frame), + .p.name = "ssa", + .p.long_name = NULL_IF_CONFIG_SMALL("ASS (Advanced SubStation Alpha) subtitle"), + .p.type = AVMEDIA_TYPE_SUBTITLE, + .p.id = AV_CODEC_ID_ASS, + .priv_data_size = sizeof(AssEncContext), + .init = ass_encode_init, + .close = ass_encode_close, + FF_CODEC_RECEIVE_PACKET_CB(ass_receive_packet), }; #endif #if CONFIG_ASS_ENCODER const FFCodec ff_ass_encoder = { - .p.name = "ass", - CODEC_LONG_NAME("ASS (Advanced SubStation Alpha) subtitle"), - .p.type = AVMEDIA_TYPE_SUBTITLE, - .p.id = AV_CODEC_ID_ASS, - .init = ass_encode_init, - FF_CODEC_ENCODE_SUB_CB(ass_encode_frame), + .p.name = "ass", + .p.long_name = NULL_IF_CONFIG_SMALL("ASS (Advanced SubStation Alpha) subtitle"), + .p.type = AVMEDIA_TYPE_SUBTITLE, + .priv_data_size = sizeof(AssEncContext), + .p.id = AV_CODEC_ID_ASS, + .init = ass_encode_init, + .close = ass_encode_close, + FF_CODEC_RECEIVE_PACKET_CB(ass_receive_packet), }; #endif diff --git a/libavcodec/avcodec.c b/libavcodec/avcodec.c index a85d3c2309328..3518dd21859d8 100644 --- a/libavcodec/avcodec.c +++ b/libavcodec/avcodec.c @@ -350,6 +350,14 @@ FF_ENABLE_DEPRECATION_WARNINGS goto free_and_end; } + // Set the subtitle type from the codec descriptor in case the decoder hasn't done itself + if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && avctx->subtitle_type == AV_SUBTITLE_FMT_UNKNOWN) { + if(avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) + avctx->subtitle_type = AV_SUBTITLE_FMT_BITMAP; + if(avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB) + avctx->subtitle_type = AV_SUBTITLE_FMT_ASS; + } + #if FF_API_AVCTX_TIMEBASE if (avctx->framerate.num > 0 && avctx->framerate.den > 0) avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1})); diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 3edd8e263650e..c1be88fd113a5 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -35,6 +35,7 @@ #include "libavutil/frame.h" #include "libavutil/log.h" #include "libavutil/pixfmt.h" +#include "libavutil/subfmt.h" #include "libavutil/rational.h" #include "codec.h" @@ -1699,7 +1700,7 @@ typedef struct AVCodecContext { /** * Header containing style information for text subtitles. - * For SUBTITLE_ASS subtitle type, it should contain the whole ASS + * For AV_SUBTITLE_FMT_ASS subtitle type, it should contain the whole ASS * [Script Info] and [V4+ Styles] section, plus the [Events] line and * the Format line following. It shouldn't include any Dialogue line. * - encoding: Set/allocated/freed by user (before avcodec_open2()) @@ -2057,6 +2058,8 @@ typedef struct AVCodecContext { * The decoder can then override during decoding as needed. */ AVChannelLayout ch_layout; + + enum AVSubtitleType subtitle_type; } AVCodecContext; /** @@ -2257,24 +2260,6 @@ typedef struct AVHWAccel { * @} */ -enum AVSubtitleType { - SUBTITLE_NONE, - - SUBTITLE_BITMAP, ///< A bitmap, pict will be set - - /** - * Plain text, the text field must be set by the decoder and is - * authoritative. ass and pict fields may contain approximations. - */ - SUBTITLE_TEXT, - - /** - * Formatted text, the ass field must be set by the decoder and is - * authoritative. pict and text fields may contain approximations. - */ - SUBTITLE_ASS, -}; - #define AV_SUBTITLE_FLAG_FORCED 0x00000001 typedef struct AVSubtitleRect { @@ -2451,7 +2436,10 @@ int avcodec_close(AVCodecContext *avctx); * Free all allocated data in the given subtitle struct. * * @param sub AVSubtitle to free. + * + * @deprecated Use the regular frame based encode and decode APIs instead. */ +attribute_deprecated void avsubtitle_free(AVSubtitle *sub); /** @@ -2550,7 +2538,10 @@ enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos); * must be freed with avsubtitle_free if *got_sub_ptr is set. * @param[in,out] got_sub_ptr Zero if no subtitle could be decompressed, otherwise, it is nonzero. * @param[in] avpkt The input AVPacket containing the input buffer. + * + * @deprecated Use the new decode API (avcodec_send_packet, avcodec_receive_frame) instead. */ +attribute_deprecated int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt); @@ -3033,10 +3024,13 @@ void av_parser_close(AVCodecParserContext *s); * @{ */ + /** + * @deprecated Use @ref avcodec_encode_subtitle2() instead. + */ +attribute_deprecated int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, const AVSubtitle *sub); - /** * @} */ diff --git a/libavcodec/ccaption_dec.c b/libavcodec/ccaption_dec.c index 61eda9ff56f65..6636ec34ac86f 100644 --- a/libavcodec/ccaption_dec.c +++ b/libavcodec/ccaption_dec.c @@ -272,15 +272,12 @@ static av_cold int init_decoder(AVCodecContext *avctx) ctx->bg_color = CCCOL_BLACK; ctx->rollup = 2; ctx->cursor_row = 10; - ret = ff_ass_subtitle_header(avctx, "Monospace", + ret = ff_ass_subtitle_header_full(avctx, ASS_DEFAULT_PLAYRESX, ASS_DEFAULT_PLAYRESY, "Monospace", ASS_DEFAULT_FONT_SIZE, - ASS_DEFAULT_COLOR, - ASS_DEFAULT_BACK_COLOR, - ASS_DEFAULT_BOLD, - ASS_DEFAULT_ITALIC, - ASS_DEFAULT_UNDERLINE, - 3, - ASS_DEFAULT_ALIGNMENT); + ASS_DEFAULT_COLOR, ASS_DEFAULT_COLOR, + ASS_DEFAULT_BACK_COLOR, ASS_DEFAULT_BACK_COLOR, + ASS_DEFAULT_BOLD, ASS_DEFAULT_ITALIC, ASS_DEFAULT_UNDERLINE, + 3, ASS_DEFAULT_ALIGNMENT); if (ret < 0) { return ret; } @@ -850,7 +847,6 @@ static int decode(AVCodecContext *avctx, AVSubtitle *sub, int len = avpkt->size; int ret = 0; int i; - unsigned nb_rect_allocated = 0; for (i = 0; i < len; i += 3) { uint8_t hi, cc_type = bptr[i] & 1; @@ -887,7 +883,7 @@ static int decode(AVCodecContext *avctx, AVSubtitle *sub, AV_TIME_BASE_Q, ms_tb); else sub->end_display_time = -1; - ret = ff_ass_add_rect2(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL, &nb_rect_allocated); + ret = avpriv_ass_add_rect(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL); if (ret < 0) return ret; ctx->last_real_time = sub->pts; @@ -897,7 +893,7 @@ static int decode(AVCodecContext *avctx, AVSubtitle *sub, if (!bptr && !ctx->real_time && ctx->buffer[!ctx->buffer_index].str[0]) { bidx = !ctx->buffer_index; - ret = ff_ass_add_rect2(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL, &nb_rect_allocated); + ret = avpriv_ass_add_rect(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL); if (ret < 0) return ret; sub->pts = ctx->buffer_time[1]; @@ -915,7 +911,7 @@ static int decode(AVCodecContext *avctx, AVSubtitle *sub, capture_screen(ctx); ctx->buffer_changed = 0; - ret = ff_ass_add_rect2(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL, &nb_rect_allocated); + ret = avpriv_ass_add_rect(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL); if (ret < 0) return ret; sub->end_display_time = -1; diff --git a/libavcodec/codec_internal.h b/libavcodec/codec_internal.h index e3b77e6deaf28..1aa7ed151e8e5 100644 --- a/libavcodec/codec_internal.h +++ b/libavcodec/codec_internal.h @@ -108,9 +108,6 @@ enum FFCodecType { /* The codec is an encoder using the encode callback; * audio and video codecs only. */ FF_CODEC_CB_TYPE_ENCODE, - /* The codec is an encoder using the encode_sub callback; - * subtitle codecs only. */ - FF_CODEC_CB_TYPE_ENCODE_SUB, /* The codec is an encoder using the receive_packet callback; * audio and video codecs only. */ FF_CODEC_CB_TYPE_RECEIVE_PACKET, @@ -213,12 +210,6 @@ typedef struct FFCodec { */ int (*encode)(struct AVCodecContext *avctx, struct AVPacket *avpkt, const struct AVFrame *frame, int *got_packet_ptr); - /** - * Encode subtitles to a raw buffer. - * cb is in this state if cb_type is FF_CODEC_CB_TYPE_ENCODE_SUB. - */ - int (*encode_sub)(struct AVCodecContext *avctx, uint8_t *buf, - int buf_size, const struct AVSubtitle *sub); /** * Encode API with decoupled frame/packet dataflow. * cb is in this state if cb_type is FF_CODEC_CB_TYPE_RECEIVE_PACKET. @@ -307,9 +298,6 @@ typedef struct FFCodec { #define FF_CODEC_ENCODE_CB(func) \ .cb_type = FF_CODEC_CB_TYPE_ENCODE, \ .cb.encode = (func) -#define FF_CODEC_ENCODE_SUB_CB(func) \ - .cb_type = FF_CODEC_CB_TYPE_ENCODE_SUB, \ - .cb.encode_sub = (func) #define FF_CODEC_RECEIVE_PACKET_CB(func) \ .cb_type = FF_CODEC_CB_TYPE_RECEIVE_PACKET, \ .cb.receive_packet = (func) diff --git a/libavcodec/decode.c b/libavcodec/decode.c index 6be2d3d6edfe8..6a4702807ad18 100644 --- a/libavcodec/decode.c +++ b/libavcodec/decode.c @@ -634,6 +634,39 @@ FF_ENABLE_DEPRECATION_WARNINGS return ret; } +static int decode_subtitle2_priv(AVCodecContext *avctx, AVSubtitle *sub, + int *got_sub_ptr, AVPacket *avpkt); + +static int decode_subtitle_shim(AVCodecContext *avctx, AVFrame *frame, AVPacket *avpkt) +{ + int ret, got_sub_ptr = 0; + AVSubtitle subtitle = { 0 }; + + if (frame->buf[0]) + return AVERROR(EAGAIN); + + av_frame_unref(frame); + + ret = decode_subtitle2_priv(avctx, &subtitle, &got_sub_ptr, avpkt); + + if (ret >= 0 && got_sub_ptr) { + frame->type = AVMEDIA_TYPE_SUBTITLE; + frame->format = subtitle.format; + ret = av_frame_get_buffer2(frame, 0); + + if (ret >= 0) + ret = ff_frame_put_subtitle(frame, &subtitle); + + frame->width = avctx->width; + frame->height = avctx->height; + frame->pkt_dts = avpkt->dts; + } + + avsubtitle_free(&subtitle); + + return ret; +} + int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt) { AVCodecInternal *avci = avctx->internal; @@ -648,6 +681,13 @@ int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacke if (avpkt && !avpkt->size && avpkt->data) return AVERROR(EINVAL); + if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) + // this does not exactly implement the avcodec_send_packet/avcodec_receive_frame API + // but we know that no subtitle decoder produces multiple AVSubtitles per packet through + // the legacy API, and this will be changed when migrating the subtitle decoders + // to the frame based decoding api + return decode_subtitle_shim(avctx, avci->buffer_frame, avpkt); + av_packet_unref(avci->buffer_pkt); if (avpkt && (avpkt->data || avpkt->side_data_elems)) { ret = av_packet_ref(avci->buffer_pkt, avpkt); @@ -707,7 +747,9 @@ int ff_decode_receive_frame(AVCodecContext *avctx, AVFrame *frame) if (avci->buffer_frame->buf[0]) { av_frame_move_ref(frame, avci->buffer_frame); - } else { + } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) + return AVERROR(EAGAIN); + else { ret = decode_receive_frame_internal(avctx, frame); if (ret < 0) return ret; @@ -860,9 +902,8 @@ static int utf8_check(const uint8_t *str) return 1; } -int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, - int *got_sub_ptr, - AVPacket *avpkt) +static int decode_subtitle2_priv(AVCodecContext *avctx, AVSubtitle *sub, + int *got_sub_ptr, AVPacket *avpkt) { int ret = 0; @@ -908,10 +949,7 @@ int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, avctx->pkt_timebase, ms); } - if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) - sub->format = 0; - else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB) - sub->format = 1; + sub->format = (uint16_t)avctx->subtitle_type; for (unsigned i = 0; i < sub->num_rects; i++) { if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_IGNORE && @@ -932,6 +970,12 @@ int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, return ret; } +int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, + int *got_sub_ptr, AVPacket *avpkt) +{ + return decode_subtitle2_priv(avctx, sub, got_sub_ptr, avpkt); +} + enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *avctx, const enum AVPixelFormat *fmt) { diff --git a/libavcodec/dvbsubdec.c b/libavcodec/dvbsubdec.c index bcc607d1d7c0f..4df350574d14b 100644 --- a/libavcodec/dvbsubdec.c +++ b/libavcodec/dvbsubdec.c @@ -34,7 +34,7 @@ #define DVBSUB_CLUT_SEGMENT 0x12 #define DVBSUB_OBJECT_SEGMENT 0x13 #define DVBSUB_DISPLAYDEFINITION_SEGMENT 0x14 -#define DVBSUB_DISPLAY_SEGMENT 0x80 +#define DVBSUB_END_DISPLAY_SEGMENT 0x80 #define cm (ff_crop_tab + MAX_NEG_CROP) @@ -796,7 +796,7 @@ static int save_subtitle_set(AVCodecContext *avctx, AVSubtitle *sub, int *got_ou rect->w = region->width; rect->h = region->height; rect->nb_colors = (1 << region->depth); - rect->type = SUBTITLE_BITMAP; + rect->type = AV_SUBTITLE_FMT_BITMAP; rect->linesize[0] = region->width; clut = get_clut(ctx, region->clut); @@ -1450,8 +1450,12 @@ static int dvbsub_decode(AVCodecContext *avctx, AVSubtitle *sub, int segment_length; int i; int ret = 0; - int got_segment = 0; - int got_dds = 0; + //int got_segment = 0; + int got_page = 0; + int got_region = 0; + int got_object = 0; + int got_end_display = 0; + int got_displaydef = 0; ff_dlog(avctx, "DVB sub packet:\n"); @@ -1496,34 +1500,28 @@ static int dvbsub_decode(AVCodecContext *avctx, AVSubtitle *sub, switch (segment_type) { case DVBSUB_PAGE_SEGMENT: ret = dvbsub_parse_page_segment(avctx, p, segment_length, sub, got_sub_ptr); - got_segment |= 1; + got_page = 1; break; case DVBSUB_REGION_SEGMENT: ret = dvbsub_parse_region_segment(avctx, p, segment_length); - got_segment |= 2; + got_region = 1; break; case DVBSUB_CLUT_SEGMENT: ret = dvbsub_parse_clut_segment(avctx, p, segment_length); if (ret < 0) goto end; - got_segment |= 4; break; case DVBSUB_OBJECT_SEGMENT: ret = dvbsub_parse_object_segment(avctx, p, segment_length); - got_segment |= 8; + got_object = 1; break; case DVBSUB_DISPLAYDEFINITION_SEGMENT: ret = dvbsub_parse_display_definition_segment(avctx, p, segment_length); - got_dds = 1; + got_displaydef = 1; break; - case DVBSUB_DISPLAY_SEGMENT: + case DVBSUB_END_DISPLAY_SEGMENT: ret = dvbsub_display_end_segment(avctx, p, segment_length, sub, got_sub_ptr); - if (got_segment == 15 && !got_dds && !avctx->width && !avctx->height) { - // Default from ETSI EN 300 743 V1.3.1 (7.2.1) - avctx->width = 720; - avctx->height = 576; - } - got_segment |= 16; + got_end_display = 1; break; default: ff_dlog(avctx, "Subtitling segment type 0x%x, page id %d, length %d\n", @@ -1536,13 +1534,24 @@ static int dvbsub_decode(AVCodecContext *avctx, AVSubtitle *sub, p += segment_length; } - // Some streams do not send a display segment but if we have all the other - // segments then we need no further data. - if (got_segment == 15) { - av_log(avctx, AV_LOG_DEBUG, "Missing display_end_segment, emulating\n"); - dvbsub_display_end_segment(avctx, p, 0, sub, got_sub_ptr); - } + // Even though not mandated by the spec, we're imposing a minimum requirement + // for a useful packet to have at least one page, region and object segment. + if (got_page && got_region && got_object && got_end_display) { + + if (!got_displaydef && !avctx->width && !avctx->height) { + // Default from ETSI EN 300 743 V1.3.1 (7.2.1) + avctx->width = 720; + avctx->height = 576; + } + + // Some streams do not send an end-of-display segment but if we have all the other + // segments then we need no further data. + if (!got_end_display) { + av_log(avctx, AV_LOG_DEBUG, "Missing display_end_segment, emulating\n"); + dvbsub_display_end_segment(avctx, p, 0, sub, got_sub_ptr); + } + } end: if (ret < 0) { return ret; diff --git a/libavcodec/dvbsubenc.c b/libavcodec/dvbsubenc.c index 822e3a53099cb..da6543443ccb8 100644 --- a/libavcodec/dvbsubenc.c +++ b/libavcodec/dvbsubenc.c @@ -21,6 +21,7 @@ #include "avcodec.h" #include "bytestream.h" #include "codec_internal.h" +#include "encode.h" #include "libavutil/colorspace.h" typedef struct DVBSubtitleContext { @@ -269,21 +270,29 @@ static int dvb_encode_rle8(uint8_t **pq, int buf_size, return len; } -static int dvbsub_encode(AVCodecContext *avctx, uint8_t *outbuf, int buf_size, - const AVSubtitle *h) +static int dvbsub_encode(AVCodecContext* avctx, AVPacket* avpkt, + const AVFrame* frame, int* got_packet) { DVBSubtitleContext *s = avctx->priv_data; uint8_t *q, *pseg_len; int page_id, region_id, clut_id, object_id, i, bpp_index, page_state; - - - q = outbuf; + size_t buf_size; + int ret; page_id = 1; - if (h->num_rects && !h->rects) + if (frame->num_subtitle_areas && !frame->subtitle_areas) return AVERROR(EINVAL); + ret = ff_get_encode_buffer(avctx, avpkt, 1024 * 1024, 0); + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); + return ret; + } + + buf_size = avpkt->size; + q = avpkt->data; + if (avctx->width > 0 && avctx->height > 0) { if (buf_size < 11) return AVERROR_BUFFER_TOO_SMALL; @@ -302,7 +311,7 @@ static int dvbsub_encode(AVCodecContext *avctx, uint8_t *outbuf, int buf_size, /* page composition segment */ - if (buf_size < 8 + h->num_rects * 6) + if (buf_size < 8 + frame->num_subtitle_areas * 6) return AVERROR_BUFFER_TOO_SMALL; *q++ = 0x0f; /* sync_byte */ *q++ = 0x10; /* segment_type */ @@ -314,30 +323,30 @@ static int dvbsub_encode(AVCodecContext *avctx, uint8_t *outbuf, int buf_size, /* page_version = 0 + page_state */ *q++ = (s->object_version << 4) | (page_state << 2) | 3; - for (region_id = 0; region_id < h->num_rects; region_id++) { + for (region_id = 0; region_id < frame->num_subtitle_areas; region_id++) { *q++ = region_id; *q++ = 0xff; /* reserved */ - bytestream_put_be16(&q, h->rects[region_id]->x); /* left pos */ - bytestream_put_be16(&q, h->rects[region_id]->y); /* top pos */ + bytestream_put_be16(&q, frame->subtitle_areas[region_id]->x); /* left pos */ + bytestream_put_be16(&q, frame->subtitle_areas[region_id]->y); /* top pos */ } bytestream_put_be16(&pseg_len, q - pseg_len - 2); - buf_size -= 8 + h->num_rects * 6; + buf_size -= 8 + frame->num_subtitle_areas * 6; - if (h->num_rects) { - for (clut_id = 0; clut_id < h->num_rects; clut_id++) { - if (buf_size < 6 + h->rects[clut_id]->nb_colors * 6) + if (frame->num_subtitle_areas) { + for (clut_id = 0; clut_id < frame->num_subtitle_areas; clut_id++) { + if (buf_size < 6 + frame->subtitle_areas[clut_id]->nb_colors * 6) return AVERROR_BUFFER_TOO_SMALL; /* CLUT segment */ - if (h->rects[clut_id]->nb_colors <= 4) { + if (frame->subtitle_areas[clut_id]->nb_colors <= 4) { /* 2 bpp, some decoders do not support it correctly */ bpp_index = 0; - } else if (h->rects[clut_id]->nb_colors <= 16) { + } else if (frame->subtitle_areas[clut_id]->nb_colors <= 16) { /* 4 bpp, standard encoding */ bpp_index = 1; - } else if (h->rects[clut_id]->nb_colors <= 256) { + } else if (frame->subtitle_areas[clut_id]->nb_colors <= 256) { /* 8 bpp, standard encoding */ bpp_index = 2; } else { @@ -354,12 +363,12 @@ static int dvbsub_encode(AVCodecContext *avctx, uint8_t *outbuf, int buf_size, *q++ = clut_id; *q++ = (0 << 4) | 0xf; /* version = 0 */ - for(i = 0; i < h->rects[clut_id]->nb_colors; i++) { + for(i = 0; i < frame->subtitle_areas[clut_id]->nb_colors; i++) { *q++ = i; /* clut_entry_id */ *q++ = (1 << (7 - bpp_index)) | (0xf << 1) | 1; /* 2 bits/pixel full range */ { int a, r, g, b; - uint32_t x= ((uint32_t*)h->rects[clut_id]->data[1])[i]; + uint32_t x= ((uint32_t*)frame->subtitle_areas[clut_id]->pal)[i]; a = (x >> 24) & 0xff; r = (x >> 16) & 0xff; g = (x >> 8) & 0xff; @@ -373,22 +382,22 @@ static int dvbsub_encode(AVCodecContext *avctx, uint8_t *outbuf, int buf_size, } bytestream_put_be16(&pseg_len, q - pseg_len - 2); - buf_size -= 6 + h->rects[clut_id]->nb_colors * 6; + buf_size -= 6 + frame->subtitle_areas[clut_id]->nb_colors * 6; } - if (buf_size < h->num_rects * 22) + if (buf_size < frame->num_subtitle_areas * 22) return AVERROR_BUFFER_TOO_SMALL; - for (region_id = 0; region_id < h->num_rects; region_id++) { + for (region_id = 0; region_id < frame->num_subtitle_areas; region_id++) { /* region composition segment */ - if (h->rects[region_id]->nb_colors <= 4) { + if (frame->subtitle_areas[region_id]->nb_colors <= 4) { /* 2 bpp, some decoders do not support it correctly */ bpp_index = 0; - } else if (h->rects[region_id]->nb_colors <= 16) { + } else if (frame->subtitle_areas[region_id]->nb_colors <= 16) { /* 4 bpp, standard encoding */ bpp_index = 1; - } else if (h->rects[region_id]->nb_colors <= 256) { + } else if (frame->subtitle_areas[region_id]->nb_colors <= 256) { /* 8 bpp, standard encoding */ bpp_index = 2; } else { @@ -402,8 +411,8 @@ static int dvbsub_encode(AVCodecContext *avctx, uint8_t *outbuf, int buf_size, q += 2; /* segment length */ *q++ = region_id; *q++ = (s->object_version << 4) | (0 << 3) | 0x07; /* version , no fill */ - bytestream_put_be16(&q, h->rects[region_id]->w); /* region width */ - bytestream_put_be16(&q, h->rects[region_id]->h); /* region height */ + bytestream_put_be16(&q, frame->subtitle_areas[region_id]->w); /* region width */ + bytestream_put_be16(&q, frame->subtitle_areas[region_id]->h); /* region height */ *q++ = ((1 + bpp_index) << 5) | ((1 + bpp_index) << 2) | 0x03; *q++ = region_id; /* clut_id == region_id */ *q++ = 0; /* 8 bit fill colors */ @@ -417,9 +426,9 @@ static int dvbsub_encode(AVCodecContext *avctx, uint8_t *outbuf, int buf_size, bytestream_put_be16(&pseg_len, q - pseg_len - 2); } - buf_size -= h->num_rects * 22; + buf_size -= frame->num_subtitle_areas * 22; - for (object_id = 0; object_id < h->num_rects; object_id++) { + for (object_id = 0; object_id < frame->num_subtitle_areas; object_id++) { int (*dvb_encode_rle)(uint8_t **pq, int buf_size, const uint8_t *bitmap, int linesize, int w, int h); @@ -428,13 +437,13 @@ static int dvbsub_encode(AVCodecContext *avctx, uint8_t *outbuf, int buf_size, return AVERROR_BUFFER_TOO_SMALL; /* bpp_index maths */ - if (h->rects[object_id]->nb_colors <= 4) { + if (frame->subtitle_areas[object_id]->nb_colors <= 4) { /* 2 bpp, some decoders do not support it correctly */ dvb_encode_rle = dvb_encode_rle2; - } else if (h->rects[object_id]->nb_colors <= 16) { + } else if (frame->subtitle_areas[object_id]->nb_colors <= 16) { /* 4 bpp, standard encoding */ dvb_encode_rle = dvb_encode_rle4; - } else if (h->rects[object_id]->nb_colors <= 256) { + } else if (frame->subtitle_areas[object_id]->nb_colors <= 256) { /* 8 bpp, standard encoding */ dvb_encode_rle = dvb_encode_rle8; } else { @@ -464,19 +473,19 @@ static int dvbsub_encode(AVCodecContext *avctx, uint8_t *outbuf, int buf_size, top_ptr = q; ret = dvb_encode_rle(&q, buf_size, - h->rects[object_id]->data[0], - h->rects[object_id]->w * 2, - h->rects[object_id]->w, - h->rects[object_id]->h >> 1); + frame->subtitle_areas[object_id]->buf[0]->data, + frame->subtitle_areas[object_id]->w * 2, + frame->subtitle_areas[object_id]->w, + frame->subtitle_areas[object_id]->h >> 1); if (ret < 0) return ret; buf_size -= ret; bottom_ptr = q; ret = dvb_encode_rle(&q, buf_size, - h->rects[object_id]->data[0] + h->rects[object_id]->w, - h->rects[object_id]->w * 2, - h->rects[object_id]->w, - h->rects[object_id]->h >> 1); + frame->subtitle_areas[object_id]->buf[0]->data + frame->subtitle_areas[object_id]->w, + frame->subtitle_areas[object_id]->w * 2, + frame->subtitle_areas[object_id]->w, + frame->subtitle_areas[object_id]->h >> 1); if (ret < 0) return ret; buf_size -= ret; @@ -503,7 +512,10 @@ static int dvbsub_encode(AVCodecContext *avctx, uint8_t *outbuf, int buf_size, buf_size -= 6; s->object_version = (s->object_version + 1) & 0xf; - return q - outbuf; + avpkt->size = q - avpkt->data; + *got_packet = 1; + + return 0; } const FFCodec ff_dvbsub_encoder = { @@ -512,5 +524,5 @@ const FFCodec ff_dvbsub_encoder = { .p.type = AVMEDIA_TYPE_SUBTITLE, .p.id = AV_CODEC_ID_DVB_SUBTITLE, .priv_data_size = sizeof(DVBSubtitleContext), - FF_CODEC_ENCODE_SUB_CB(dvbsub_encode), + FF_CODEC_ENCODE_CB(dvbsub_encode), }; diff --git a/libavcodec/dvdsubdec.c b/libavcodec/dvdsubdec.c index a5da0d7b08624..bf97b916c9e30 100644 --- a/libavcodec/dvdsubdec.c +++ b/libavcodec/dvdsubdec.c @@ -405,7 +405,7 @@ static int decode_dvd_subtitles(DVDSubContext *ctx, AVSubtitle *sub_header, sub_header->rects[0]->y = y1; sub_header->rects[0]->w = w; sub_header->rects[0]->h = h; - sub_header->rects[0]->type = SUBTITLE_BITMAP; + sub_header->rects[0]->type = AV_SUBTITLE_FMT_BITMAP; sub_header->rects[0]->linesize[0] = w; sub_header->rects[0]->flags = is_menu ? AV_SUBTITLE_FLAG_FORCED : 0; } diff --git a/libavcodec/dvdsubenc.c b/libavcodec/dvdsubenc.c index 0874aaa02dd2b..408ac938c9d5f 100644 --- a/libavcodec/dvdsubenc.c +++ b/libavcodec/dvdsubenc.c @@ -22,6 +22,8 @@ #include "bytestream.h" #include "codec_internal.h" #include "dvdsub.h" +#include "encode.h" +#include "internal.h" #include "libavutil/avassert.h" #include "libavutil/bprint.h" #include "libavutil/imgutils.h" @@ -115,15 +117,14 @@ static int color_distance(uint32_t a, uint32_t b) * Count colors used in a rectangle, quantizing alpha and grouping by * nearest global palette entry. */ -static void count_colors(AVCodecContext *avctx, unsigned hits[33], - const AVSubtitleRect *r) +static void count_colors(const AVCodecContext *avctx, unsigned hits[33], + const AVSubtitleArea *r) { DVDSubtitleContext *dvdc = avctx->priv_data; unsigned count[256] = { 0 }; - uint32_t *palette = (uint32_t *)r->data[1]; uint32_t color; int x, y, i, j, match, d, best_d, av_uninit(best_j); - uint8_t *p = r->data[0]; + uint8_t *p = r->buf[0]->data; for (y = 0; y < r->h; y++) { for (x = 0; x < r->w; x++) @@ -133,7 +134,7 @@ static void count_colors(AVCodecContext *avctx, unsigned hits[33], for (i = 0; i < 256; i++) { if (!count[i]) /* avoid useless search */ continue; - color = palette[i]; + color = r->pal[i]; /* 0: transparent, 1-16: semi-transparent, 17-33 opaque */ match = color < 0x33000000 ? 0 : color < 0xCC000000 ? 1 : 17; if (match) { @@ -233,13 +234,13 @@ static void build_color_map(AVCodecContext *avctx, int cmap[], } } -static void copy_rectangle(AVSubtitleRect *dst, AVSubtitleRect *src, int cmap[]) +static void copy_rectangle(AVSubtitleArea*dst, AVSubtitleArea *src, int cmap[]) { int x, y; uint8_t *p, *q; - p = src->data[0]; - q = dst->data[0] + (src->x - dst->x) + + p = src->buf[0]->data; + q = dst->buf[0]->data + (src->x - dst->x) + (src->y - dst->y) * dst->linesize[0]; for (y = 0; y < src->h; y++) { for (x = 0; x < src->w; x++) @@ -249,51 +250,57 @@ static void copy_rectangle(AVSubtitleRect *dst, AVSubtitleRect *src, int cmap[]) } } -static int encode_dvd_subtitles(AVCodecContext *avctx, - uint8_t *outbuf, int outbuf_size, - const AVSubtitle *h) +static int encode_dvd_subtitles(AVCodecContext* avctx, AVPacket* avpkt, + const AVFrame* frame, int* got_packet) { DVDSubtitleContext *dvdc = avctx->priv_data; uint8_t *q, *qq; int offset1, offset2; - int i, rects = h->num_rects, ret; + int ret = 0; + unsigned i, rects = frame->num_subtitle_areas; unsigned global_palette_hits[33] = { 0 }; int cmap[256]; int out_palette[4]; int out_alpha[4]; - AVSubtitleRect vrect; - uint8_t *vrect_data = NULL; + AVSubtitleArea vrect; + uint8_t* vrect_data = NULL, *outbuf; int x2, y2; int forced = 0; + int outbuf_size; + int64_t duration_ms; - if (rects == 0 || !h->rects) + if (rects == 0) + return 0; + + if (!frame->subtitle_areas) return AVERROR(EINVAL); + for (i = 0; i < rects; i++) - if (h->rects[i]->type != SUBTITLE_BITMAP) { + if (frame->subtitle_areas[i]->type != AV_SUBTITLE_FMT_BITMAP) { av_log(avctx, AV_LOG_ERROR, "Bitmap subtitle required\n"); return AVERROR(EINVAL); } /* Mark this subtitle forced if any of the rectangles is forced. */ for (i = 0; i < rects; i++) - if ((h->rects[i]->flags & AV_SUBTITLE_FLAG_FORCED) != 0) { + if ((frame->subtitle_areas[i]->flags & AV_SUBTITLE_FLAG_FORCED) != 0) { forced = 1; break; } - vrect = *h->rects[0]; + vrect = *frame->subtitle_areas[0]; if (rects > 1) { /* DVD subtitles can have only one rectangle: build a virtual rectangle containing all actual rectangles. The data of the rectangles will be copied later, when the palette is decided, because the rectangles may have different palettes. */ - int xmin = h->rects[0]->x, xmax = xmin + h->rects[0]->w; - int ymin = h->rects[0]->y, ymax = ymin + h->rects[0]->h; + int xmin = frame->subtitle_areas[0]->x, xmax = xmin + frame->subtitle_areas[0]->w; + int ymin = frame->subtitle_areas[0]->y, ymax = ymin + frame->subtitle_areas[0]->h; for (i = 1; i < rects; i++) { - xmin = FFMIN(xmin, h->rects[i]->x); - ymin = FFMIN(ymin, h->rects[i]->y); - xmax = FFMAX(xmax, h->rects[i]->x + h->rects[i]->w); - ymax = FFMAX(ymax, h->rects[i]->y + h->rects[i]->h); + xmin = FFMIN(xmin, frame->subtitle_areas[i]->x); + ymin = FFMIN(ymin, frame->subtitle_areas[i]->y); + xmax = FFMAX(xmax, frame->subtitle_areas[i]->x + frame->subtitle_areas[i]->w); + ymax = FFMAX(ymax, frame->subtitle_areas[i]->y + frame->subtitle_areas[i]->h); } vrect.x = xmin; vrect.y = ymin; @@ -305,27 +312,29 @@ static int encode_dvd_subtitles(AVCodecContext *avctx, /* Count pixels outside the virtual rectangle as transparent */ global_palette_hits[0] = vrect.w * vrect.h; for (i = 0; i < rects; i++) - global_palette_hits[0] -= h->rects[i]->w * h->rects[i]->h; + global_palette_hits[0] -= frame->subtitle_areas[i]->w * frame->subtitle_areas[i]->h; } for (i = 0; i < rects; i++) - count_colors(avctx, global_palette_hits, h->rects[i]); + count_colors(avctx, global_palette_hits, frame->subtitle_areas[i]); select_palette(avctx, out_palette, out_alpha, global_palette_hits); if (rects > 1) { - if (!(vrect_data = av_calloc(vrect.w, vrect.h))) + + vrect.buf[0] = av_buffer_allocz((size_t)vrect.w * vrect.h); + if (!vrect.buf[0]) return AVERROR(ENOMEM); - vrect.data [0] = vrect_data; + vrect.linesize[0] = vrect.w; for (i = 0; i < rects; i++) { - build_color_map(avctx, cmap, (uint32_t *)h->rects[i]->data[1], + build_color_map(avctx, cmap, frame->subtitle_areas[i]->pal, out_palette, out_alpha); - copy_rectangle(&vrect, h->rects[i], cmap); + copy_rectangle(&vrect, frame->subtitle_areas[i], cmap); } for (i = 0; i < 4; i++) cmap[i] = i; } else { - build_color_map(avctx, cmap, (uint32_t *)h->rects[0]->data[1], + build_color_map(avctx, cmap, frame->subtitle_areas[0]->pal, out_palette, out_alpha); } @@ -336,6 +345,16 @@ static int encode_dvd_subtitles(AVCodecContext *avctx, out_palette[i], out_alpha[i] >> 4); av_log(avctx, AV_LOG_DEBUG, "\n"); + + ret = ff_get_encode_buffer(avctx, avpkt, 4 + vrect.w * vrect.h / 2 + 17 + 21, 0); + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); + return ret; + } + + outbuf_size = avpkt->size; + outbuf = avpkt->data; + // encode data block q = outbuf + 4; offset1 = q - outbuf; @@ -345,10 +364,10 @@ static int encode_dvd_subtitles(AVCodecContext *avctx, ret = AVERROR_BUFFER_TOO_SMALL; goto fail; } - dvd_encode_rle(&q, vrect.data[0], vrect.w * 2, + dvd_encode_rle(&q, vrect.buf[0]->data, vrect.w * 2, vrect.w, (vrect.h + 1) >> 1, cmap); offset2 = q - outbuf; - dvd_encode_rle(&q, vrect.data[0] + vrect.w, vrect.w * 2, + dvd_encode_rle(&q, vrect.buf[0]->data + vrect.w, vrect.w * 2, vrect.w, vrect.h >> 1, cmap); if (dvdc->even_rows_fix && (vrect.h & 1)) { @@ -363,7 +382,7 @@ static int encode_dvd_subtitles(AVCodecContext *avctx, bytestream_put_be16(&qq, q - outbuf); // send start display command - bytestream_put_be16(&q, (h->start_display_time*90) >> 10); + bytestream_put_be16(&q, 0); bytestream_put_be16(&q, (q - outbuf) /*- 2 */ + 8 + 12 + 2); *q++ = 0x03; // palette - 4 nibbles *q++ = (out_palette[3] << 4) | out_palette[2]; @@ -401,7 +420,8 @@ static int encode_dvd_subtitles(AVCodecContext *avctx, *q++ = 0xff; // terminating command // send stop display command last - bytestream_put_be16(&q, (h->end_display_time*90) >> 10); + duration_ms = av_rescale_q(frame->subtitle_timing.duration, AV_TIME_BASE_Q, (AVRational){ 1, 1000 }); + bytestream_put_be16(&q, (duration_ms*90) >> 10); bytestream_put_be16(&q, (q - outbuf) - 2 /*+ 4*/); *q++ = 0x02; // set end *q++ = 0xff; // terminating command @@ -410,7 +430,9 @@ static int encode_dvd_subtitles(AVCodecContext *avctx, bytestream_put_be16(&qq, q - outbuf); av_log(NULL, AV_LOG_DEBUG, "subtitle_packet size=%"PTRDIFF_SPECIFIER"\n", q - outbuf); - ret = q - outbuf; + avpkt->size = q - outbuf; + ret = 0; + *got_packet = 1; fail: av_free(vrect_data); @@ -474,14 +496,13 @@ static int dvdsub_init(AVCodecContext *avctx) return 0; } -static int dvdsub_encode(AVCodecContext *avctx, - unsigned char *buf, int buf_size, - const AVSubtitle *sub) +static int dvdsub_encode(struct AVCodecContext* avctx, struct AVPacket* avpkt, + const struct AVFrame* frame, int* got_packet) { //DVDSubtitleContext *s = avctx->priv_data; int ret; - ret = encode_dvd_subtitles(avctx, buf, buf_size, sub); + ret = encode_dvd_subtitles(avctx, avpkt, frame, got_packet); return ret; } @@ -506,7 +527,7 @@ const FFCodec ff_dvdsub_encoder = { .p.type = AVMEDIA_TYPE_SUBTITLE, .p.id = AV_CODEC_ID_DVD_SUBTITLE, .init = dvdsub_init, - FF_CODEC_ENCODE_SUB_CB(dvdsub_encode), + FF_CODEC_ENCODE_CB(dvdsub_encode), .p.priv_class = &dvdsubenc_class, .priv_data_size = sizeof(DVDSubtitleContext), }; diff --git a/libavcodec/encode.c b/libavcodec/encode.c index fbe2c97cd627d..27785c024264c 100644 --- a/libavcodec/encode.c +++ b/libavcodec/encode.c @@ -161,17 +161,70 @@ static int pad_last_frame(AVCodecContext *s, AVFrame *frame, const AVFrame *src, return ret; } -int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, - const AVSubtitle *sub) +int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, const AVSubtitle *sub) { - int ret; + int ret = 0; + AVFrame *frame = NULL; + AVPacket* avpkt = NULL; + if (sub->start_display_time) { av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n"); return -1; } - ret = ffcodec(avctx->codec)->cb.encode_sub(avctx, buf, buf_size, sub); + memset(buf, 0, buf_size); + // Create a temporary frame for calling the regular api: + frame = av_frame_alloc(); + if (!frame) { + ret = AVERROR(ENOMEM); + goto exit; + } + + frame->format = sub->format; + frame->type = AVMEDIA_TYPE_SUBTITLE; + ret = av_frame_get_buffer2(frame, 0); + if (ret < 0) + goto exit; + + // Create a temporary packet + avpkt = av_packet_alloc(); + if (!avpkt) { + ret = AVERROR(ENOMEM); + goto exit; + } + + // Copy legacy subtitle data to temp frame + ret = ff_frame_put_subtitle(frame, sub); + if (ret < 0) + goto exit; + + ret = avcodec_send_frame(avctx, frame); + if (ret < 0) + goto exit; + + ret = avcodec_receive_packet(avctx, avpkt); + + if (ret < 0 && ret != AVERROR(EAGAIN)) + goto exit; + + //ret = avctx->codec->encode2(avctx, avpkt, frame, &got_packet); + avctx->frame_number++; + + if (avpkt->size) { + if (avpkt->size > buf_size) { + ret = AVERROR_BUFFER_TOO_SMALL; + goto exit; + } + + memcpy(buf, avpkt->data, avpkt->size); + ret = avpkt->size; + } + +exit: + + av_packet_free(&avpkt); + av_frame_free(&frame); return ret; } diff --git a/libavcodec/internal.h b/libavcodec/internal.h index 76a6ea6bc6462..055c6735de35a 100644 --- a/libavcodec/internal.h +++ b/libavcodec/internal.h @@ -245,4 +245,22 @@ int64_t ff_guess_coded_bitrate(AVCodecContext *avctx); int ff_int_from_list_or_default(void *ctx, const char * val_name, int val, const int * array_valid_values, int default_value); +void ff_dvdsub_parse_palette(uint32_t *palette, const char *p); + +/** + * Copies subtitle data from AVSubtitle to AVFrame. + * + * @deprecated This is a compatibility method for interoperability with + * the legacy subtitle API. + */ +int ff_frame_put_subtitle(AVFrame* frame, const AVSubtitle* sub); + +/** + * Copies subtitle data from AVFrame to AVSubtitle. + * + * @deprecated This is a compatibility method for interoperability with + * the legacy subtitle API. + */ +int ff_frame_get_subtitle(AVSubtitle* sub, AVFrame* frame); + #endif /* AVCODEC_INTERNAL_H */ diff --git a/libavcodec/jacosubdec.c b/libavcodec/jacosubdec.c index 08349a9ec8320..91080502912d2 100644 --- a/libavcodec/jacosubdec.c +++ b/libavcodec/jacosubdec.c @@ -182,7 +182,7 @@ static int jacosub_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, av_bprint_init(&buffer, JSS_MAX_LINESIZE, JSS_MAX_LINESIZE); jacosub_to_ass(avctx, &buffer, ptr); - ret = ff_ass_add_rect(sub, buffer.str, s->readorder++, 0, NULL, NULL); + ret = avpriv_ass_add_rect(sub, buffer.str, s->readorder++, 0, NULL, NULL); av_bprint_finalize(&buffer, NULL); if (ret < 0) return ret; diff --git a/libavcodec/libaribb24.c b/libavcodec/libaribb24.c index f40517e22e237..e69ffb5653b28 100644 --- a/libavcodec/libaribb24.c +++ b/libavcodec/libaribb24.c @@ -274,7 +274,7 @@ static int libaribb24_handle_regions(AVCodecContext *avctx, AVSubtitle *sub) av_log(avctx, AV_LOG_DEBUG, "Styled ASS line: %s\n", buf.str); - ret = ff_ass_add_rect(sub, buf.str, b24->read_order++, + ret = avpriv_ass_add_rect(sub, buf.str, b24->read_order++, 0, NULL, NULL); } diff --git a/libavcodec/libzvbi-teletextdec.c b/libavcodec/libzvbi-teletextdec.c index 45e30eb01c9c7..1afc13ce21e38 100644 --- a/libavcodec/libzvbi-teletextdec.c +++ b/libavcodec/libzvbi-teletextdec.c @@ -153,12 +153,12 @@ static char *create_ass_text(TeletextContext *ctx, const char *text) AVBPrint buf; av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED); - ff_ass_bprint_text_event(&buf, text, strlen(text), "", 0); + avpriv_ass_bprint_text_event(&buf, text, strlen(text), "", 0); if (!av_bprint_is_complete(&buf)) { av_bprint_finalize(&buf, NULL); return NULL; } - dialog = ff_ass_get_dialog(ctx->readorder++, 0, NULL, NULL, buf.str); + dialog = avpriv_ass_get_dialog(ctx->readorder++, 0, NULL, NULL, buf.str); av_bprint_finalize(&buf, NULL); return dialog; } @@ -225,7 +225,7 @@ static int gen_sub_text(TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_page } av_log(ctx, AV_LOG_DEBUG, "subtext:%s:txetbus\n", sub_rect->ass); } else { - sub_rect->type = SUBTITLE_NONE; + sub_rect->type = AV_SUBTITLE_FMT_NONE; } av_bprint_finalize(&buf, NULL); return 0; @@ -395,7 +395,7 @@ static int gen_sub_ass(TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_page if (buf.len) { sub_rect->type = SUBTITLE_ASS; - sub_rect->ass = ff_ass_get_dialog(ctx->readorder++, 0, is_subtitle_page ? "Subtitle" : "Teletext", NULL, buf.str); + sub_rect->ass = avpriv_ass_get_dialog(ctx->readorder++, 0, is_subtitle_page ? "Subtitle" : "Teletext", NULL, buf.str); if (!sub_rect->ass) { av_bprint_finalize(&buf, NULL); @@ -403,7 +403,7 @@ static int gen_sub_ass(TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_page } av_log(ctx, AV_LOG_DEBUG, "subtext:%s:txetbus\n", sub_rect->ass); } else { - sub_rect->type = SUBTITLE_NONE; + sub_rect->type = AV_SUBTITLE_FMT_NONE; } av_bprint_finalize(&buf, NULL); return 0; @@ -463,7 +463,7 @@ static int gen_sub_bitmap(TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_pa if (vc >= vcend) { av_log(ctx, AV_LOG_DEBUG, "dropping empty page %3x\n", page->pgno); - sub_rect->type = SUBTITLE_NONE; + sub_rect->type = AV_SUBTITLE_FMT_NONE; return 0; } @@ -696,7 +696,7 @@ static int teletext_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, sub->num_rects = 0; sub->pts = ctx->pages->pts; - if (ctx->pages->sub_rect->type != SUBTITLE_NONE) { + if (ctx->pages->sub_rect->type != AV_SUBTITLE_FMT_NONE) { sub->rects = av_malloc(sizeof(*sub->rects)); if (sub->rects) { sub->num_rects = 1; @@ -751,10 +751,13 @@ static int teletext_init_decoder(AVCodecContext *avctx) switch (ctx->format_id) { case 0: + avctx->subtitle_type = AV_SUBTITLE_FMT_BITMAP; return 0; case 1: + avctx->subtitle_type = AV_SUBTITLE_FMT_ASS; return ff_ass_subtitle_header_default(avctx); case 2: + avctx->subtitle_type = AV_SUBTITLE_FMT_ASS; return my_ass_subtitle_header(avctx); } return AVERROR_BUG; diff --git a/libavcodec/microdvddec.c b/libavcodec/microdvddec.c index 786a3845fd0f5..d254b1cd9350f 100644 --- a/libavcodec/microdvddec.c +++ b/libavcodec/microdvddec.c @@ -309,7 +309,7 @@ static int microdvd_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, } } if (new_line.len) { - int ret = ff_ass_add_rect(sub, new_line.str, s->readorder++, 0, NULL, NULL); + int ret = avpriv_ass_add_rect(sub, new_line.str, s->readorder++, 0, NULL, NULL); av_bprint_finalize(&new_line, NULL); if (ret < 0) return ret; @@ -362,8 +362,9 @@ static int microdvd_init(AVCodecContext *avctx) } } } - return ff_ass_subtitle_header(avctx, font_buf.str, font_size, color, - ASS_DEFAULT_BACK_COLOR, bold, italic, + return ff_ass_subtitle_header_full(avctx, ASS_DEFAULT_PLAYRESX, ASS_DEFAULT_PLAYRESY, + font_buf.str, font_size, color, color, + ASS_DEFAULT_BACK_COLOR, ASS_DEFAULT_BACK_COLOR, bold, italic, underline, ASS_DEFAULT_BORDERSTYLE, alignment); } diff --git a/libavcodec/movtextdec.c b/libavcodec/movtextdec.c index f799252bf2129..3c9e84c5e9c75 100644 --- a/libavcodec/movtextdec.c +++ b/libavcodec/movtextdec.c @@ -22,7 +22,6 @@ #include "avcodec.h" #include "ass.h" #include "libavutil/opt.h" -#include "libavutil/avstring.h" #include "libavutil/common.h" #include "libavutil/bprint.h" #include "libavutil/intreadwrite.h" @@ -553,7 +552,7 @@ static int mov_text_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, } else text_to_ass(&buf, ptr, end, avctx); - ret = ff_ass_add_rect(sub, buf.str, m->readorder++, 0, NULL, NULL); + ret = avpriv_ass_add_rect(sub, buf.str, m->readorder++, 0, NULL, NULL); av_bprint_finalize(&buf, NULL); if (ret < 0) return ret; diff --git a/libavcodec/movtextenc.c b/libavcodec/movtextenc.c index 7aa74d7c9d05f..2d5f0347a5cc0 100644 --- a/libavcodec/movtextenc.c +++ b/libavcodec/movtextenc.c @@ -26,10 +26,11 @@ #include "libavutil/intreadwrite.h" #include "libavutil/mem.h" #include "libavutil/common.h" -#include "ass_split.h" -#include "ass.h" +#include "libavutil/ass_split_internal.h" +#include "libavutil/ass_internal.h" #include "bytestream.h" #include "codec_internal.h" +#include "encode.h" #define STYLE_FLAG_BOLD (1<<0) #define STYLE_FLAG_ITALIC (1<<1) @@ -73,6 +74,7 @@ typedef struct { AVCodecContext *avctx; ASSSplitContext *ass_ctx; + int is_default_ass_context; ASSStyle *ass_dialog_style; StyleBox *style_attributes; unsigned count; @@ -167,7 +169,7 @@ static int mov_text_encode_close(AVCodecContext *avctx) { MovTextContext *s = avctx->priv_data; - ff_ass_split_free(s->ass_ctx); + avpriv_ass_split_free(s->ass_ctx); av_freep(&s->style_attributes); av_freep(&s->fonts); av_bprint_finalize(&s->buffer, NULL); @@ -222,7 +224,7 @@ static int encode_sample_description(AVCodecContext *avctx) else s->font_scale_factor = 1; - style = ff_ass_style_get(s->ass_ctx, "Default"); + style = avpriv_ass_style_get(s->ass_ctx, "Default"); if (!style && ass->styles_count) { style = &ass->styles[0]; } @@ -329,7 +331,7 @@ static av_cold int mov_text_encode_init(AVCodecContext *avctx) av_bprint_init(&s->buffer, 0, AV_BPRINT_SIZE_UNLIMITED); - s->ass_ctx = ff_ass_split(avctx->subtitle_header); + s->ass_ctx = avpriv_ass_split((char*)avctx->subtitle_header); if (!s->ass_ctx) return AVERROR_INVALIDDATA; ret = encode_sample_description(avctx); @@ -566,7 +568,7 @@ static void mov_text_ass_style_set(MovTextContext *s, ASSStyle *style) static void mov_text_dialog(MovTextContext *s, ASSDialog *dialog) { - ASSStyle *style = ff_ass_style_get(s->ass_ctx, dialog->style); + ASSStyle *style = avpriv_ass_style_get(s->ass_ctx, dialog->style); s->ass_dialog_style = style; mov_text_ass_style_set(s, style); @@ -580,7 +582,7 @@ static void mov_text_cancel_overrides_cb(void *priv, const char *style_name) if (!style_name || !*style_name) style = s->ass_dialog_style; else - style= ff_ass_style_get(s->ass_ctx, style_name); + style= avpriv_ass_style_get(s->ass_ctx, style_name); mov_text_ass_style_set(s, style); } @@ -633,56 +635,112 @@ static const ASSCodesCallbacks mov_text_callbacks = { .end = mov_text_end_cb, }; -static int mov_text_encode_frame(AVCodecContext *avctx, unsigned char *buf, - int bufsize, const AVSubtitle *sub) +static void ensure_ass_context(AVCodecContext* avctx, const AVFrame* frame) +{ + MovTextContext* s = avctx->priv_data; + int ret; + + if (s->ass_ctx && !s->is_default_ass_context) + // We already have a (non-default context) + return; + + if (!frame->num_subtitle_areas) + // Don't need ass context for processing empty subtitle frames + return; + + // The frame has content, so we need to set up a context + if (frame->subtitle_header && frame->subtitle_header->size > 0) { + const char* subtitle_header = (char*)frame->subtitle_header->data; + avpriv_ass_split_free(s->ass_ctx); + s->ass_ctx = avpriv_ass_split(subtitle_header); + s->is_default_ass_context = 0; + } + else if (!s->ass_ctx) { + char* subtitle_header = avpriv_ass_get_subtitle_header_default(0); + if (!subtitle_header) + return; + + s->ass_ctx = avpriv_ass_split(subtitle_header); + s->is_default_ass_context = 1; + av_free(subtitle_header); + } + + if (s->ass_ctx && !avctx->extradata_size) { + ret = encode_sample_description(avctx); + if (ret < 0) + av_log(avctx, AV_LOG_ERROR, "Error during encode_sample_description().\n"); + } +} + +static int mov_text_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, + const AVFrame *frame, int *got_packet) { MovTextContext *s = avctx->priv_data; ASSDialog *dialog; - int i, length; + int i, ret = 0; + size_t j; + uint8_t* buf; + + ensure_ass_context(avctx, frame); s->text_pos = 0; s->count = 0; s->box_flags = 0; av_bprint_clear(&s->buffer); - for (i = 0; i < sub->num_rects; i++) { - const char *ass = sub->rects[i]->ass; + for (i = 0; i < frame->num_subtitle_areas; i++) { + const char *ass = frame->subtitle_areas[i]->ass; - if (sub->rects[i]->type != SUBTITLE_ASS) { - av_log(avctx, AV_LOG_ERROR, "Only SUBTITLE_ASS type supported.\n"); + if (frame->subtitle_areas[i]->type != AV_SUBTITLE_FMT_ASS) { + av_log(avctx, AV_LOG_ERROR, "Only AV_SUBTITLE_FMT_ASS type supported.\n"); return AVERROR(EINVAL); } - dialog = ff_ass_split_dialog(s->ass_ctx, ass); - if (!dialog) - return AVERROR(ENOMEM); - mov_text_dialog(s, dialog); - ff_ass_split_override_codes(&mov_text_callbacks, s, dialog->text); - ff_ass_free_dialog(&dialog); + if (ass) { + + if (i > 0) + mov_text_new_line_cb(s, 0); + + dialog = avpriv_ass_split_dialog(s->ass_ctx, ass); + if (!dialog) + return AVERROR(ENOMEM); + mov_text_dialog(s, dialog); + avpriv_ass_split_override_codes(&mov_text_callbacks, s, dialog->text); + avpriv_ass_free_dialog(&dialog); + + } } - if (s->buffer.len > UINT16_MAX) - return AVERROR(ERANGE); - AV_WB16(buf, s->buffer.len); - buf += 2; + if (!av_bprint_is_complete(&s->buffer)) { + return AVERROR(ENOMEM); + } - for (size_t j = 0; j < box_count; j++) + for (j = 0; j < box_count; j++) { box_types[j].encode(s); + } - if (!av_bprint_is_complete(&s->buffer)) - return AVERROR(ENOMEM); + ret = ff_get_encode_buffer(avctx, avpkt, s->buffer.len + 3, 0); + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); + return ret; + } - if (!s->buffer.len) - return 0; + buf = avpkt->data; - if (s->buffer.len > bufsize - 3) { + AV_WB16(buf, s->buffer.len); + buf += 2; + + if (s->buffer.len > avpkt->size - 3) { av_log(avctx, AV_LOG_ERROR, "Buffer too small for ASS event.\n"); - return AVERROR_BUFFER_TOO_SMALL; + ret = AVERROR_BUFFER_TOO_SMALL; + goto exit; } memcpy(buf, s->buffer.str, s->buffer.len); - length = s->buffer.len + 2; + avpkt->size = s->buffer.len + 2; + *got_packet = 1; - return length; +exit: + return ret; } #define OFFSET(x) offsetof(MovTextContext, x) @@ -707,7 +765,7 @@ const FFCodec ff_movtext_encoder = { .priv_data_size = sizeof(MovTextContext), .p.priv_class = &mov_text_encoder_class, .init = mov_text_encode_init, - FF_CODEC_ENCODE_SUB_CB(mov_text_encode_frame), + FF_CODEC_ENCODE_CB(mov_text_encode_frame), .close = mov_text_encode_close, .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, }; diff --git a/libavcodec/mpl2dec.c b/libavcodec/mpl2dec.c index 8639acf0b05e8..896323156cca4 100644 --- a/libavcodec/mpl2dec.c +++ b/libavcodec/mpl2dec.c @@ -73,7 +73,7 @@ static int mpl2_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED); if (ptr && avpkt->size > 0 && *ptr && !mpl2_event_to_ass(&buf, ptr)) - ret = ff_ass_add_rect(sub, buf.str, s->readorder++, 0, NULL, NULL); + ret = avpriv_ass_add_rect(sub, buf.str, s->readorder++, 0, NULL, NULL); av_bprint_finalize(&buf, NULL); if (ret < 0) return ret; diff --git a/libavcodec/pgssubdec.c b/libavcodec/pgssubdec.c index 5f76f12615da2..65ba3ad26180a 100644 --- a/libavcodec/pgssubdec.c +++ b/libavcodec/pgssubdec.c @@ -534,7 +534,7 @@ static int display_end_segment(AVCodecContext *avctx, AVSubtitle *sub, if (!rect) return AVERROR(ENOMEM); sub->rects[sub->num_rects++] = rect; - rect->type = SUBTITLE_BITMAP; + rect->type = AV_SUBTITLE_FMT_BITMAP; /* Process bitmap */ object = find_object(ctx->presentation.objects[i].id, &ctx->objects); diff --git a/libavcodec/realtextdec.c b/libavcodec/realtextdec.c index b09ff78ea440e..4b17f3166270c 100644 --- a/libavcodec/realtextdec.c +++ b/libavcodec/realtextdec.c @@ -66,7 +66,7 @@ static int realtext_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, av_bprint_init(&buf, 0, 4096); if (ptr && avpkt->size > 0 && !rt_event_to_ass(&buf, ptr)) - ret = ff_ass_add_rect(sub, buf.str, s->readorder++, 0, NULL, NULL); + ret = avpriv_ass_add_rect(sub, buf.str, s->readorder++, 0, NULL, NULL); av_bprint_finalize(&buf, NULL); if (ret < 0) return ret; diff --git a/libavcodec/samidec.c b/libavcodec/samidec.c index e84c4bc6b8521..07ef1cb0d0fa0 100644 --- a/libavcodec/samidec.c +++ b/libavcodec/samidec.c @@ -143,7 +143,7 @@ static int sami_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, if (ret < 0) return ret; // TODO: pass escaped sami->encoded_source.str as source - ret = ff_ass_add_rect(sub, sami->full.str, sami->readorder++, 0, NULL, NULL); + ret = avpriv_ass_add_rect(sub, sami->full.str, sami->readorder++, 0, NULL, NULL); if (ret < 0) return ret; } diff --git a/libavcodec/srtdec.c b/libavcodec/srtdec.c index 8697f5b149670..9eb30fe7d2e75 100644 --- a/libavcodec/srtdec.c +++ b/libavcodec/srtdec.c @@ -79,7 +79,7 @@ static int srt_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, ret = srt_to_ass(avctx, &buffer, avpkt->data, x1, y1, x2, y2); if (ret >= 0) - ret = ff_ass_add_rect(sub, buffer.str, s->readorder++, 0, NULL, NULL); + ret = avpriv_ass_add_rect(sub, buffer.str, s->readorder++, 0, NULL, NULL); av_bprint_finalize(&buffer, NULL); if (ret < 0) return ret; diff --git a/libavcodec/srtenc.c b/libavcodec/srtenc.c index 7e36a2200c2e5..1fa1a2da264d8 100644 --- a/libavcodec/srtenc.c +++ b/libavcodec/srtenc.c @@ -23,11 +23,12 @@ #include #include "avcodec.h" +#include "encode.h" #include "libavutil/avstring.h" #include "libavutil/bprint.h" -#include "ass_split.h" -#include "ass.h" #include "codec_internal.h" +#include "libavutil/ass_split_internal.h" +#include "libavutil/ass_internal.h" #define SRT_STACK_SIZE 64 @@ -35,6 +36,7 @@ typedef struct { AVCodecContext *avctx; ASSSplitContext *ass_ctx; + int is_default_ass_context; AVBPrint buffer; char stack[SRT_STACK_SIZE]; int stack_ptr; @@ -96,7 +98,7 @@ static void srt_stack_push_pop(SRTContext *s, const char c, int close) static void srt_style_apply(SRTContext *s, const char *style) { - ASSStyle *st = ff_ass_style_get(s->ass_ctx, style); + ASSStyle *st = avpriv_ass_style_get(s->ass_ctx, style); if (st) { int c = st->primary_color & 0xFFFFFF; if (st->font_name && strcmp(st->font_name, ASS_DEFAULT_FONT) || @@ -132,14 +134,13 @@ static void srt_style_apply(SRTContext *s, const char *style) } } - static av_cold int srt_encode_init(AVCodecContext *avctx) { SRTContext *s = avctx->priv_data; s->avctx = avctx; - s->ass_ctx = ff_ass_split(avctx->subtitle_header); + s->ass_ctx = avpriv_ass_split((char *)avctx->subtitle_header); av_bprint_init(&s->buffer, 0, AV_BPRINT_SIZE_UNLIMITED); - return s->ass_ctx ? 0 : AVERROR_INVALIDDATA; + return 0; } static void srt_text_cb(void *priv, const char *text, int len) @@ -229,64 +230,101 @@ static const ASSCodesCallbacks text_callbacks = { .new_line = srt_new_line_cb, }; -static int encode_frame(AVCodecContext *avctx, - unsigned char *buf, int bufsize, const AVSubtitle *sub, - const ASSCodesCallbacks *cb) +static void ensure_ass_context(SRTContext* s, const AVFrame* frame) +{ + if (s->ass_ctx && !s->is_default_ass_context) + // We already have a (non-default context) + return; + + if (!frame->num_subtitle_areas) + // Don't need ass context for processing empty subtitle frames + return; + + // The frame has content, so we need to set up a context + if (frame->subtitle_header && frame->subtitle_header->size > 0) { + const char* subtitle_header = (char*)frame->subtitle_header->data; + avpriv_ass_split_free(s->ass_ctx); + s->ass_ctx = avpriv_ass_split(subtitle_header); + s->is_default_ass_context = 0; + } + else if (!s->ass_ctx) { + char* subtitle_header = avpriv_ass_get_subtitle_header_default(0); + if (!subtitle_header) + return; + + s->ass_ctx = avpriv_ass_split(subtitle_header); + s->is_default_ass_context = 1; + av_free(subtitle_header); + } +} + +static int encode_frame(AVCodecContext* avctx, AVPacket* avpkt, + const AVFrame* frame, int* got_packet, const ASSCodesCallbacks* cb) { SRTContext *s = avctx->priv_data; ASSDialog *dialog; - int i; + int i, ret; + + ensure_ass_context(s, frame); av_bprint_clear(&s->buffer); - for (i=0; inum_rects; i++) { - const char *ass = sub->rects[i]->ass; + for (i=0; i< frame->num_subtitle_areas; i++) { + const char *ass = frame->subtitle_areas[i]->ass; - if (sub->rects[i]->type != SUBTITLE_ASS) { - av_log(avctx, AV_LOG_ERROR, "Only SUBTITLE_ASS type supported.\n"); + if (frame->subtitle_areas[i]->type != AV_SUBTITLE_FMT_ASS) { + av_log(avctx, AV_LOG_ERROR, "Only AV_SUBTITLE_FMT_ASS type supported.\n"); return AVERROR(EINVAL); } - dialog = ff_ass_split_dialog(s->ass_ctx, ass); - if (!dialog) - return AVERROR(ENOMEM); - s->alignment_applied = 0; - if (avctx->codec_id == AV_CODEC_ID_SUBRIP) - srt_style_apply(s, dialog->style); - ff_ass_split_override_codes(cb, s, dialog->text); - ff_ass_free_dialog(&dialog); + if (ass) { + + if (i > 0) + srt_new_line_cb(s, 0); + + dialog = avpriv_ass_split_dialog(s->ass_ctx, ass); + if (!dialog) + return AVERROR(ENOMEM); + s->alignment_applied = 0; + if (avctx->codec_id == AV_CODEC_ID_SUBRIP) + srt_style_apply(s, dialog->style); + avpriv_ass_split_override_codes(cb, s, dialog->text); + avpriv_ass_free_dialog(&dialog); + } } if (!av_bprint_is_complete(&s->buffer)) return AVERROR(ENOMEM); - if (!s->buffer.len) - return 0; - if (s->buffer.len > bufsize) { - av_log(avctx, AV_LOG_ERROR, "Buffer too small for ASS event.\n"); - return AVERROR_BUFFER_TOO_SMALL; + ret = ff_get_encode_buffer(avctx, avpkt, s->buffer.len + 1, 0); + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); + return ret; } - memcpy(buf, s->buffer.str, s->buffer.len); - return s->buffer.len; + memcpy(avpkt->data, s->buffer.str, s->buffer.len); + avpkt->size = s->buffer.len; + *got_packet = 1; + + return 0; } -static int srt_encode_frame(AVCodecContext *avctx, - unsigned char *buf, int bufsize, const AVSubtitle *sub) +static int srt_encode_frame(AVCodecContext* avctx, AVPacket* avpkt, + const AVFrame* frame, int* got_packet) { - return encode_frame(avctx, buf, bufsize, sub, &srt_callbacks); + return encode_frame(avctx, avpkt, frame, got_packet, &srt_callbacks); } -static int text_encode_frame(AVCodecContext *avctx, - unsigned char *buf, int bufsize, const AVSubtitle *sub) +static int text_encode_frame(AVCodecContext* avctx, AVPacket* avpkt, + const AVFrame* frame, int* got_packet) { - return encode_frame(avctx, buf, bufsize, sub, &text_callbacks); + return encode_frame(avctx, avpkt, frame, got_packet, &text_callbacks); } static int srt_encode_close(AVCodecContext *avctx) { SRTContext *s = avctx->priv_data; - ff_ass_split_free(s->ass_ctx); + avpriv_ass_split_free(s->ass_ctx); av_bprint_finalize(&s->buffer, NULL); return 0; } @@ -300,7 +338,7 @@ const FFCodec ff_srt_encoder = { .p.id = AV_CODEC_ID_SUBRIP, .priv_data_size = sizeof(SRTContext), .init = srt_encode_init, - FF_CODEC_ENCODE_SUB_CB(srt_encode_frame), + FF_CODEC_ENCODE_CB(srt_encode_frame), .close = srt_encode_close, }; #endif @@ -313,7 +351,7 @@ const FFCodec ff_subrip_encoder = { .p.id = AV_CODEC_ID_SUBRIP, .priv_data_size = sizeof(SRTContext), .init = srt_encode_init, - FF_CODEC_ENCODE_SUB_CB(srt_encode_frame), + FF_CODEC_ENCODE_CB(srt_encode_frame), .close = srt_encode_close, }; #endif @@ -326,7 +364,7 @@ const FFCodec ff_text_encoder = { .p.id = AV_CODEC_ID_TEXT, .priv_data_size = sizeof(SRTContext), .init = srt_encode_init, - FF_CODEC_ENCODE_SUB_CB(text_encode_frame), + FF_CODEC_ENCODE_CB(text_encode_frame), .close = srt_encode_close, }; #endif diff --git a/libavcodec/subviewerdec.c b/libavcodec/subviewerdec.c index 209f69505ff7f..f860d05c00b32 100644 --- a/libavcodec/subviewerdec.c +++ b/libavcodec/subviewerdec.c @@ -57,7 +57,7 @@ static int subviewer_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED); if (ptr && avpkt->size > 0 && !subviewer_event_to_ass(&buf, ptr)) - ret = ff_ass_add_rect(sub, buf.str, s->readorder++, 0, NULL, NULL); + ret = avpriv_ass_add_rect(sub, buf.str, s->readorder++, 0, NULL, NULL); av_bprint_finalize(&buf, NULL); if (ret < 0) return ret; diff --git a/libavcodec/tests/avcodec.c b/libavcodec/tests/avcodec.c index 3288a85f64bec..ed8b9212bbe04 100644 --- a/libavcodec/tests/avcodec.c +++ b/libavcodec/tests/avcodec.c @@ -109,7 +109,6 @@ int main(void){ is_decoder = 1; break; case FF_CODEC_CB_TYPE_ENCODE: - case FF_CODEC_CB_TYPE_ENCODE_SUB: case FF_CODEC_CB_TYPE_RECEIVE_PACKET: is_encoder = 1; break; @@ -125,15 +124,13 @@ int main(void){ #define CHECK(TYPE, type) (codec2->cb_type == FF_CODEC_CB_TYPE_ ## TYPE && !codec2->cb.type) if (CHECK(DECODE, decode) || CHECK(DECODE_SUB, decode_sub) || CHECK(RECEIVE_PACKET, receive_packet) || - CHECK(ENCODE, encode) || CHECK(ENCODE_SUB, encode_sub) || + CHECK(ENCODE, encode) || CHECK(RECEIVE_FRAME, receive_frame)) { ERR_EXT("Codec %s does not implement its %s callback.\n", is_decoder ? "decoding" : "encoding"); } #undef CHECK if (is_encoder) { - if ((codec->type == AVMEDIA_TYPE_SUBTITLE) != (codec2->cb_type == FF_CODEC_CB_TYPE_ENCODE_SUB)) - ERR("Encoder %s is both subtitle encoder and not subtitle encoder."); if (codec2->update_thread_context || codec2->update_thread_context_for_user || codec2->bsfs) ERR("Encoder %s has decoder-only thread functions or bsf.\n"); if (codec->type == AVMEDIA_TYPE_AUDIO) { diff --git a/libavcodec/textdec.c b/libavcodec/textdec.c index b9aebff002c7d..604175ddc28d7 100644 --- a/libavcodec/textdec.c +++ b/libavcodec/textdec.c @@ -55,8 +55,8 @@ static int text_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED); if (ptr && avpkt->size > 0 && *ptr) { - ff_ass_bprint_text_event(&buf, ptr, avpkt->size, text->linebreaks, text->keep_ass_markup); - ret = ff_ass_add_rect(sub, buf.str, text->readorder++, 0, NULL, NULL); + avpriv_ass_bprint_text_event(&buf, ptr, avpkt->size, text->linebreaks, text->keep_ass_markup); + ret = avpriv_ass_add_rect(sub, buf.str, text->readorder++, 0, NULL, NULL); } av_bprint_finalize(&buf, NULL); if (ret < 0) diff --git a/libavcodec/ttmlenc.c b/libavcodec/ttmlenc.c index fb05c3896860b..128b50c53a1b8 100644 --- a/libavcodec/ttmlenc.c +++ b/libavcodec/ttmlenc.c @@ -32,13 +32,18 @@ #include "libavutil/avstring.h" #include "libavutil/bprint.h" #include "libavutil/internal.h" -#include "ass_split.h" -#include "ass.h" +#include "libavutil/ass_split_internal.h" +#include "libavutil/ass_internal.h" #include "ttmlenc.h" +#include "encode.h" + + typedef struct { AVCodecContext *avctx; ASSSplitContext *ass_ctx; + int is_default_ass_context; + int extradata_written; AVBPrint buffer; } TTMLContext; @@ -77,28 +82,75 @@ static const ASSCodesCallbacks ttml_callbacks = { .new_line = ttml_new_line_cb, }; -static int ttml_encode_frame(AVCodecContext *avctx, uint8_t *buf, - int bufsize, const AVSubtitle *sub) +static int ttml_write_header_content(AVCodecContext* avctx); + +static void ensure_ass_context(AVCodecContext* avctx, const AVFrame* frame) +{ + TTMLContext* s = avctx->priv_data; + int ret; + + if (s->ass_ctx && !s->is_default_ass_context) + // We already have a (non-default context) + return; + + if (!frame->num_subtitle_areas) + // Don't need ass context for processing empty subtitle frames + return; + + // The frame has content, so we need to set up a context + if (frame->subtitle_header && frame->subtitle_header->size > 0) { + const char* subtitle_header = (char*)frame->subtitle_header->data; + avpriv_ass_split_free(s->ass_ctx); + s->ass_ctx = avpriv_ass_split(subtitle_header); + s->is_default_ass_context = 0; + } + else if (!s->ass_ctx) { + char* subtitle_header = avpriv_ass_get_subtitle_header_default(0); + if (!subtitle_header) + return; + + s->ass_ctx = avpriv_ass_split(subtitle_header); + s->is_default_ass_context = 1; + av_free(subtitle_header); + } + + if (s->ass_ctx && !s->extradata_written) { + s->extradata_written = 1; + if ((ret = ttml_write_header_content(avctx)) < 0) { + av_log(avctx, AV_LOG_ERROR, "Error writing header content.\n"); + } + } +} + +static int ttml_encode_frame(AVCodecContext* avctx, AVPacket* avpkt, + const AVFrame* frame, int* got_packet) { TTMLContext *s = avctx->priv_data; ASSDialog *dialog; - int i; + int i, ret; + + ensure_ass_context(avctx, frame); av_bprint_clear(&s->buffer); - for (i=0; inum_rects; i++) { - const char *ass = sub->rects[i]->ass; - int ret; + for (i=0; i< frame->num_subtitle_areas; i++) { + const char *ass = frame->subtitle_areas[i]->ass; - if (sub->rects[i]->type != SUBTITLE_ASS) { - av_log(avctx, AV_LOG_ERROR, "Only SUBTITLE_ASS type supported.\n"); + if (frame->subtitle_areas[i]->type != AV_SUBTITLE_FMT_ASS) { + av_log(avctx, AV_LOG_ERROR, "Only AV_SUBTITLE_FMT_ASS type supported.\n"); return AVERROR(EINVAL); } - dialog = ff_ass_split_dialog(s->ass_ctx, ass); + if (!ass) + continue; + + dialog = avpriv_ass_split_dialog(s->ass_ctx, ass); if (!dialog) return AVERROR(ENOMEM); + if (i > 0) + ttml_new_line_cb(s, 0); + if (dialog->style) { av_bprintf(&s->buffer, "buffer, dialog->style, NULL, @@ -107,7 +159,7 @@ static int ttml_encode_frame(AVCodecContext *avctx, uint8_t *buf, av_bprintf(&s->buffer, "\">"); } - ret = ff_ass_split_override_codes(&ttml_callbacks, s, dialog->text); + ret = avpriv_ass_split_override_codes(&ttml_callbacks, s, dialog->text); if (ret < 0) { int log_level = (ret != AVERROR_INVALIDDATA || avctx->err_recognition & AV_EF_EXPLODE) ? @@ -118,7 +170,7 @@ static int ttml_encode_frame(AVCodecContext *avctx, uint8_t *buf, av_err2str(ret)); if (log_level == AV_LOG_ERROR) { - ff_ass_free_dialog(&dialog); + avpriv_ass_free_dialog(&dialog); return ret; } } @@ -126,29 +178,31 @@ static int ttml_encode_frame(AVCodecContext *avctx, uint8_t *buf, if (dialog->style) av_bprintf(&s->buffer, ""); - ff_ass_free_dialog(&dialog); + avpriv_ass_free_dialog(&dialog); } if (!av_bprint_is_complete(&s->buffer)) return AVERROR(ENOMEM); - if (!s->buffer.len) - return 0; - - // force null-termination, so in case our destination buffer is - // too small, the return value is larger than bufsize minus null. - if (av_strlcpy(buf, s->buffer.str, bufsize) > bufsize - 1) { - av_log(avctx, AV_LOG_ERROR, "Buffer too small for TTML event.\n"); - return AVERROR_BUFFER_TOO_SMALL; + + ret = ff_get_encode_buffer(avctx, avpkt, s->buffer.len + 3, 0); + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); + return ret; } - return s->buffer.len; + av_strlcpy(avpkt->data, s->buffer.str, avpkt->size); + + avpkt->size = s->buffer.len; + *got_packet = 1; + + return 0; } static av_cold int ttml_encode_close(AVCodecContext *avctx) { TTMLContext *s = avctx->priv_data; - ff_ass_split_free(s->ass_ctx); + avpriv_ass_split_free(s->ass_ctx); av_bprint_finalize(&s->buffer, NULL); @@ -371,13 +425,13 @@ static av_cold int ttml_encode_init(AVCodecContext *avctx) s->avctx = avctx; av_bprint_init(&s->buffer, 0, AV_BPRINT_SIZE_UNLIMITED); + s->ass_ctx = avpriv_ass_split((char*)avctx->subtitle_header); - if (!(s->ass_ctx = ff_ass_split(avctx->subtitle_header))) { - return AVERROR_INVALIDDATA; - } + if (s->ass_ctx) { + if (ret = ttml_write_header_content(avctx) < 0) + return ret; - if ((ret = ttml_write_header_content(avctx)) < 0) { - return ret; + s->extradata_written = 1; } return 0; @@ -390,7 +444,7 @@ const FFCodec ff_ttml_encoder = { .p.id = AV_CODEC_ID_TTML, .priv_data_size = sizeof(TTMLContext), .init = ttml_encode_init, - FF_CODEC_ENCODE_SUB_CB(ttml_encode_frame), + FF_CODEC_ENCODE_CB(ttml_encode_frame), .close = ttml_encode_close, .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, }; diff --git a/libavcodec/utils.c b/libavcodec/utils.c index 2b63a498b9abc..3c88952f2b475 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -76,7 +76,6 @@ int av_codec_is_encoder(const AVCodec *avcodec) { const FFCodec *const codec = ffcodec(avcodec); return codec && (codec->cb_type == FF_CODEC_CB_TYPE_ENCODE || - codec->cb_type == FF_CODEC_CB_TYPE_ENCODE_SUB || codec->cb_type == FF_CODEC_CB_TYPE_RECEIVE_PACKET); } @@ -823,6 +822,190 @@ FF_ENABLE_DEPRECATION_WARNINGS return FFMAX(0, duration); } +static int subtitle_area2rect(AVSubtitleRect *dst, const AVSubtitleArea *src) +{ + dst->x = src->x; + dst->y = src->y; + dst->w = src->w; + dst->h = src->h; + dst->nb_colors = src->nb_colors; + dst->type = src->type; + dst->flags = src->flags; + + switch (dst->type) { + case AV_SUBTITLE_FMT_BITMAP: + + if (src->h > 0 && src->w > 0 && src->buf[0]) { + uint32_t *pal; + AVBufferRef *buf = src->buf[0]; + dst->data[0] = av_mallocz(buf->size); + memcpy(dst->data[0], buf->data, buf->size); + dst->linesize[0] = src->linesize[0]; + + dst->data[1] = av_mallocz(256 * 4); + pal = (uint32_t *)dst->data[1]; + + for (unsigned i = 0; i < 256; i++) { + pal[i] = src->pal[i]; + } + } + + break; + case AV_SUBTITLE_FMT_TEXT: + + if (src->text) + dst->text = av_strdup(src->text); + else + dst->text = av_strdup(""); + + if (!dst->text) + return AVERROR(ENOMEM); + + break; + case AV_SUBTITLE_FMT_ASS: + + if (src->ass) + dst->ass = av_strdup(src->ass); + else + dst->ass = av_strdup(""); + + if (!dst->ass) + return AVERROR(ENOMEM); + + break; + default: + + av_log(NULL, AV_LOG_ERROR, "Subtitle rect has invalid format: %d", dst->type); + return AVERROR(EINVAL); + } + + return 0; +} + +static int subtitle_rect2area(AVSubtitleArea *dst, const AVSubtitleRect *src) +{ + dst->x = src->x; + dst->y = src->y; + dst->w = src->w; + dst->h = src->h; + dst->nb_colors = src->nb_colors; + dst->type = src->type; + dst->flags = src->flags; + + switch (dst->type) { + case AV_SUBTITLE_FMT_BITMAP: + + if (src->h > 0 && src->w > 0 && src->data[0]) { + AVBufferRef *buf = av_buffer_allocz(src->h * src->linesize[0]); + memcpy(buf->data, src->data[0], buf->size); + + dst->buf[0] = buf; + dst->linesize[0] = src->linesize[0]; + } + + if (src->data[1]) { + uint32_t *pal = (uint32_t *)src->data[1]; + + for (unsigned i = 0; i < 256; i++) { + dst->pal[i] = pal[i]; + } + } + + break; + case AV_SUBTITLE_FMT_TEXT: + + if (src->text) { + dst->text = av_strdup(src->text); + if (!dst->text) + return AVERROR(ENOMEM); + } + + break; + case AV_SUBTITLE_FMT_ASS: + + if (src->ass) { + dst->ass = av_strdup(src->ass); + if (!dst->ass) + return AVERROR(ENOMEM); + } + + break; + default: + + av_log(NULL, AV_LOG_ERROR, "Subtitle area has invalid format: %d", dst->type); + return AVERROR(EINVAL); + } + + return 0; +} + +/** + * Copies subtitle data from AVSubtitle (deprecated) to AVFrame + * + * @note This is a compatibility method for conversion to the legacy API + */ +int ff_frame_put_subtitle(AVFrame *frame, const AVSubtitle *sub) +{ + frame->format = sub->format; + frame->subtitle_timing.start_pts = sub->pts; + frame->subtitle_timing.start_pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q); + frame->subtitle_timing.duration = av_rescale_q(sub->end_display_time - sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q); + + if (sub->num_rects) { + frame->subtitle_areas = av_malloc_array(sub->num_rects, sizeof(AVSubtitleArea*)); + if (!frame->subtitle_areas) + return AVERROR(ENOMEM); + + for (unsigned i = 0; i < sub->num_rects; i++) { + int ret; + frame->subtitle_areas[i] = av_mallocz(sizeof(AVSubtitleArea)); + if (!frame->subtitle_areas[i]) + return AVERROR(ENOMEM); + ret = subtitle_rect2area(frame->subtitle_areas[i], sub->rects[i]); + if (ret < 0) { + frame->num_subtitle_areas = i; + return ret; + } + } + } + + frame->num_subtitle_areas = sub->num_rects; + return 0; +} + +/** + * Copies subtitle data from AVFrame to AVSubtitle (deprecated) + * + * @note This is a compatibility method for conversion to the legacy API + */ +int ff_frame_get_subtitle(AVSubtitle *sub, AVFrame *frame) +{ + const int64_t duration_ms = av_rescale_q(frame->subtitle_timing.duration, AV_TIME_BASE_Q, (AVRational){ 1, 1000 }); + + sub->start_display_time = 0; + sub->end_display_time = (int32_t)duration_ms; + sub->pts = frame->subtitle_timing.start_pts; + + if (frame->num_subtitle_areas) { + sub->rects = av_malloc_array(frame->num_subtitle_areas, sizeof(AVSubtitleRect*)); + if (!sub->rects) + return AVERROR(ENOMEM); + + for (unsigned i = 0; i < frame->num_subtitle_areas; i++) { + int ret; + sub->rects[i] = av_mallocz(sizeof(AVSubtitleRect)); + ret = subtitle_area2rect(sub->rects[i], frame->subtitle_areas[i]); + if (ret < 0) { + sub->num_rects = i; + return ret; + } + } + } + + sub->num_rects = frame->num_subtitle_areas; + return 0; +} + int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes) { int channels = par->ch_layout.nb_channels; diff --git a/libavcodec/webvttdec.c b/libavcodec/webvttdec.c index 690f00dc476b2..b2554844648ea 100644 --- a/libavcodec/webvttdec.c +++ b/libavcodec/webvttdec.c @@ -90,7 +90,7 @@ static int webvtt_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED); if (ptr && avpkt->size > 0 && !webvtt_event_to_ass(&buf, ptr)) - ret = ff_ass_add_rect(sub, buf.str, s->readorder++, 0, NULL, NULL); + ret = avpriv_ass_add_rect(sub, buf.str, s->readorder++, 0, NULL, NULL); av_bprint_finalize(&buf, NULL); if (ret < 0) return ret; diff --git a/libavcodec/webvttenc.c b/libavcodec/webvttenc.c index 4369aacb749e5..a21a922ef05b7 100644 --- a/libavcodec/webvttenc.c +++ b/libavcodec/webvttenc.c @@ -22,16 +22,18 @@ #include #include "avcodec.h" +#include "encode.h" #include "libavutil/avstring.h" #include "libavutil/bprint.h" -#include "ass_split.h" -#include "ass.h" #include "codec_internal.h" +#include "libavutil/ass_split_internal.h" +#include "libavutil/ass_internal.h" #define WEBVTT_STACK_SIZE 64 typedef struct { AVCodecContext *avctx; ASSSplitContext *ass_ctx; + int is_default_ass_context; AVBPrint buffer; unsigned timestamp_end; int count; @@ -93,7 +95,7 @@ static void webvtt_stack_push_pop(WebVTTContext *s, const char c, int close) static void webvtt_style_apply(WebVTTContext *s, const char *style) { - ASSStyle *st = ff_ass_style_get(s->ass_ctx, style); + ASSStyle *st = avpriv_ass_style_get(s->ass_ctx, style); if (st) { if (st->bold != ASS_DEFAULT_BOLD) { webvtt_print(s, ""); @@ -155,49 +157,87 @@ static const ASSCodesCallbacks webvtt_callbacks = { .end = webvtt_end_cb, }; -static int webvtt_encode_frame(AVCodecContext *avctx, - unsigned char *buf, int bufsize, const AVSubtitle *sub) +static void ensure_ass_context(WebVTTContext* s, const AVFrame* frame) +{ + if (s->ass_ctx && !s->is_default_ass_context) + // We already have a (non-default context) + return; + + if (!frame->num_subtitle_areas) + // Don't need ass context for processing empty subtitle frames + return; + + // The frame has content, so we need to set up a context + if (frame->subtitle_header && frame->subtitle_header->size > 0) { + const char* subtitle_header = (char*)frame->subtitle_header->data; + avpriv_ass_split_free(s->ass_ctx); + s->ass_ctx = avpriv_ass_split(subtitle_header); + s->is_default_ass_context = 0; + } + else if (!s->ass_ctx) { + char* subtitle_header = avpriv_ass_get_subtitle_header_default(0); + if (!subtitle_header) + return; + + s->ass_ctx = avpriv_ass_split(subtitle_header); + s->is_default_ass_context = 1; + av_free(subtitle_header); + } +} + +static int webvtt_encode_frame(AVCodecContext* avctx, AVPacket* avpkt, + const AVFrame* frame, int* got_packet) { WebVTTContext *s = avctx->priv_data; ASSDialog *dialog; - int i; + int ret, i; + + ensure_ass_context(s, frame); av_bprint_clear(&s->buffer); - for (i=0; inum_rects; i++) { - const char *ass = sub->rects[i]->ass; + for (i=0; i< frame->num_subtitle_areas; i++) { + const char *ass = frame->subtitle_areas[i]->ass; - if (sub->rects[i]->type != SUBTITLE_ASS) { - av_log(avctx, AV_LOG_ERROR, "Only SUBTITLE_ASS type supported.\n"); + if (frame->subtitle_areas[i]->type != AV_SUBTITLE_FMT_ASS) { + av_log(avctx, AV_LOG_ERROR, "Only AV_SUBTITLE_FMT_ASS type supported.\n"); return AVERROR(EINVAL); } - dialog = ff_ass_split_dialog(s->ass_ctx, ass); - if (!dialog) - return AVERROR(ENOMEM); - webvtt_style_apply(s, dialog->style); - ff_ass_split_override_codes(&webvtt_callbacks, s, dialog->text); - ff_ass_free_dialog(&dialog); + if (ass) { + + if (i > 0) + webvtt_new_line_cb(s, 0); + + dialog = avpriv_ass_split_dialog(s->ass_ctx, ass); + if (!dialog) + return AVERROR(ENOMEM); + webvtt_style_apply(s, dialog->style); + avpriv_ass_split_override_codes(&webvtt_callbacks, s, dialog->text); + avpriv_ass_free_dialog(&dialog); + } } if (!av_bprint_is_complete(&s->buffer)) return AVERROR(ENOMEM); - if (!s->buffer.len) - return 0; - if (s->buffer.len > bufsize) { - av_log(avctx, AV_LOG_ERROR, "Buffer too small for ASS event.\n"); - return AVERROR_BUFFER_TOO_SMALL; + ret = ff_get_encode_buffer(avctx, avpkt, s->buffer.len + 1, 0); + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); + return ret; } - memcpy(buf, s->buffer.str, s->buffer.len); - return s->buffer.len; + memcpy(avpkt->data, s->buffer.str, s->buffer.len); + avpkt->size = s->buffer.len; + *got_packet = s->buffer.len > 0; + + return 0; } static int webvtt_encode_close(AVCodecContext *avctx) { WebVTTContext *s = avctx->priv_data; - ff_ass_split_free(s->ass_ctx); + avpriv_ass_split_free(s->ass_ctx); av_bprint_finalize(&s->buffer, NULL); return 0; } @@ -206,9 +246,9 @@ static av_cold int webvtt_encode_init(AVCodecContext *avctx) { WebVTTContext *s = avctx->priv_data; s->avctx = avctx; - s->ass_ctx = ff_ass_split(avctx->subtitle_header); + s->ass_ctx = avpriv_ass_split((char*)avctx->subtitle_header); av_bprint_init(&s->buffer, 0, AV_BPRINT_SIZE_UNLIMITED); - return s->ass_ctx ? 0 : AVERROR_INVALIDDATA; + return 0; } const FFCodec ff_webvtt_encoder = { @@ -218,6 +258,6 @@ const FFCodec ff_webvtt_encoder = { .p.id = AV_CODEC_ID_WEBVTT, .priv_data_size = sizeof(WebVTTContext), .init = webvtt_encode_init, - FF_CODEC_ENCODE_SUB_CB(webvtt_encode_frame), + FF_CODEC_ENCODE_CB(webvtt_encode_frame), .close = webvtt_encode_close, }; diff --git a/libavcodec/xsubdec.c b/libavcodec/xsubdec.c index f86b7c58e798a..1b167e1d0a41c 100644 --- a/libavcodec/xsubdec.c +++ b/libavcodec/xsubdec.c @@ -107,7 +107,7 @@ static int decode_frame(AVCodecContext *avctx, AVSubtitle *sub, sub->num_rects = 1; rect->x = x; rect->y = y; rect->w = w; rect->h = h; - rect->type = SUBTITLE_BITMAP; + rect->type = AV_SUBTITLE_FMT_BITMAP; rect->linesize[0] = w; rect->data[0] = av_malloc(w * h); rect->nb_colors = 4; diff --git a/libavcodec/xsubenc.c b/libavcodec/xsubenc.c index 6f417c5958064..10147bae8e84b 100644 --- a/libavcodec/xsubenc.c +++ b/libavcodec/xsubenc.c @@ -23,6 +23,7 @@ #include "avcodec.h" #include "bytestream.h" #include "codec_internal.h" +#include "encode.h" #include "put_bits.h" /** @@ -111,39 +112,56 @@ static int make_tc(uint64_t ms, int *tc) return ms > 99; } -static int xsub_encode(AVCodecContext *avctx, unsigned char *buf, - int bufsize, const AVSubtitle *h) +static int xsub_encode(AVCodecContext* avctx, AVPacket* avpkt, + const AVFrame* frame, int* got_packet) { - uint64_t startTime = h->pts / 1000; // FIXME: need better solution... - uint64_t endTime = startTime + h->end_display_time - h->start_display_time; + const int64_t duration_ms = (int64_t)((double)frame->subtitle_timing.duration * av_q2d(AV_TIME_BASE_Q) * 1000); + const uint64_t startTime = (int64_t)((double)frame->subtitle_timing.start_pts * av_q2d(AV_TIME_BASE_Q) * 1000); + const uint64_t endTime = startTime + duration_ms; int start_tc[4], end_tc[4]; - uint8_t *hdr = buf + 27; // Point behind the timestamp + uint8_t *hdr; uint8_t *rlelenptr; uint16_t width, height; - int i; + int i, ret; PutBitContext pb; + uint8_t* buf; + int64_t req_size; - if (bufsize < 27 + 7*2 + 4*3) { - av_log(avctx, AV_LOG_ERROR, "Buffer too small for XSUB header.\n"); - return AVERROR_BUFFER_TOO_SMALL; + if (!frame->num_subtitle_areas) { + // Don't encode empty sub events + return 0; } + // Estimate size (timestamp 27, header 7*2 + 4*3, padding 10) + req_size = 27 + 7*2 + 4*3 + 10; + req_size += frame->subtitle_areas[0]->linesize[0] * frame->subtitle_areas[0]->h; + req_size += 256; // Palette + + ret = ff_get_encode_buffer(avctx, avpkt, req_size, 0); + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); + return ret; + } + + buf = avpkt->data; + hdr = avpkt->data + 27; // Point behind the timestamp + // TODO: support multiple rects - if (h->num_rects != 1) - av_log(avctx, AV_LOG_WARNING, "Only single rects supported (%d in subtitle.)\n", h->num_rects); + if (frame->num_subtitle_areas != 1) + av_log(avctx, AV_LOG_WARNING, "Only single rects supported (%d in subtitle.)\n", frame->num_subtitle_areas); // TODO: render text-based subtitles into bitmaps - if (!h->rects[0]->data[0] || !h->rects[0]->data[1]) { + if (!frame->subtitle_areas[0]->buf[0]->data || !frame->subtitle_areas[0]->pal) { av_log(avctx, AV_LOG_WARNING, "No subtitle bitmap available.\n"); return AVERROR(EINVAL); } // TODO: color reduction, similar to dvdsub encoder - if (h->rects[0]->nb_colors > 4) - av_log(avctx, AV_LOG_WARNING, "No more than 4 subtitle colors supported (%d found.)\n", h->rects[0]->nb_colors); + if (frame->subtitle_areas[0]->nb_colors > 4) + av_log(avctx, AV_LOG_WARNING, "No more than 4 subtitle colors supported (%d found.)\n", frame->subtitle_areas[0]->nb_colors); // TODO: Palette swapping if color zero is not transparent - if (((uint32_t *)h->rects[0]->data[1])[0] & 0xff000000) + if (((uint32_t *)frame->subtitle_areas[0]->pal)[0] & 0xff000000) av_log(avctx, AV_LOG_WARNING, "Color index 0 is not transparent. Transparency will be messed up.\n"); if (make_tc(startTime, start_tc) || make_tc(endTime, end_tc)) { @@ -151,7 +169,7 @@ static int xsub_encode(AVCodecContext *avctx, unsigned char *buf, return AVERROR(EINVAL); } - snprintf(buf, 28, + snprintf((char *)avpkt->data, 28, "[%02d:%02d:%02d.%03d-%02d:%02d:%02d.%03d]", start_tc[3], start_tc[2], start_tc[1], start_tc[0], end_tc[3], end_tc[2], end_tc[1], end_tc[0]); @@ -160,45 +178,47 @@ static int xsub_encode(AVCodecContext *avctx, unsigned char *buf, // 2 pixels required on either side of subtitle. // Possibly due to limitations of hardware renderers. // TODO: check if the bitmap is already padded - width = FFALIGN(h->rects[0]->w, 2) + PADDING * 2; - height = FFALIGN(h->rects[0]->h, 2); + width = FFALIGN(frame->subtitle_areas[0]->w, 2) + PADDING * 2; + height = FFALIGN(frame->subtitle_areas[0]->h, 2); bytestream_put_le16(&hdr, width); bytestream_put_le16(&hdr, height); - bytestream_put_le16(&hdr, h->rects[0]->x); - bytestream_put_le16(&hdr, h->rects[0]->y); - bytestream_put_le16(&hdr, h->rects[0]->x + width -1); - bytestream_put_le16(&hdr, h->rects[0]->y + height -1); + bytestream_put_le16(&hdr, frame->subtitle_areas[0]->x); + bytestream_put_le16(&hdr, frame->subtitle_areas[0]->y); + bytestream_put_le16(&hdr, frame->subtitle_areas[0]->x + width -1); + bytestream_put_le16(&hdr, frame->subtitle_areas[0]->y + height -1); rlelenptr = hdr; // Will store length of first field here later. hdr+=2; // Palette for (i=0; i<4; i++) - bytestream_put_be24(&hdr, ((uint32_t *)h->rects[0]->data[1])[i]); + bytestream_put_be24(&hdr, ((uint32_t *)frame->subtitle_areas[0]->pal)[i]); // Bitmap // RLE buffer. Reserve 2 bytes for possible padding after the last row. - init_put_bits(&pb, hdr, bufsize - (hdr - buf) - 2); - if (xsub_encode_rle(&pb, h->rects[0]->data[0], - h->rects[0]->linesize[0] * 2, - h->rects[0]->w, (h->rects[0]->h + 1) >> 1)) + init_put_bits(&pb, hdr, avpkt->size - (hdr - buf) - 2); + if (xsub_encode_rle(&pb, frame->subtitle_areas[0]->buf[0]->data, + frame->subtitle_areas[0]->linesize[0] * 2, + frame->subtitle_areas[0]->w, (frame->subtitle_areas[0]->h + 1) >> 1)) return AVERROR_BUFFER_TOO_SMALL; bytestream_put_le16(&rlelenptr, put_bytes_count(&pb, 0)); // Length of first field - if (xsub_encode_rle(&pb, h->rects[0]->data[0] + h->rects[0]->linesize[0], - h->rects[0]->linesize[0] * 2, - h->rects[0]->w, h->rects[0]->h >> 1)) + if (xsub_encode_rle(&pb, frame->subtitle_areas[0]->buf[0]->data + frame->subtitle_areas[0]->linesize[0], + frame->subtitle_areas[0]->linesize[0] * 2, + frame->subtitle_areas[0]->w, frame->subtitle_areas[0]->h >> 1)) return AVERROR_BUFFER_TOO_SMALL; // Enforce total height to be a multiple of 2 - if (h->rects[0]->h & 1) { - put_xsub_rle(&pb, h->rects[0]->w, PADDING_COLOR); + if (frame->subtitle_areas[0]->h & 1) { + put_xsub_rle(&pb, frame->subtitle_areas[0]->w, PADDING_COLOR); } flush_put_bits(&pb); - return hdr - buf + put_bytes_output(&pb); + avpkt->size = hdr - buf + put_bytes_output(&pb); + *got_packet = 1; + return 0; } static av_cold int xsub_encoder_init(AVCodecContext *avctx) @@ -217,5 +237,5 @@ const FFCodec ff_xsub_encoder = { .p.type = AVMEDIA_TYPE_SUBTITLE, .p.id = AV_CODEC_ID_XSUB, .init = xsub_encoder_init, - FF_CODEC_ENCODE_SUB_CB(xsub_encode), + FF_CODEC_ENCODE_CB(xsub_encode), }; diff --git a/libavfilter/Makefile b/libavfilter/Makefile index ff2a06c262a4f..4e5d33a43fc14 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -21,6 +21,7 @@ OBJS = allfilters.o \ framequeue.o \ graphdump.o \ graphparser.o \ + subtitles.o \ version.o \ video.o \ @@ -313,6 +314,8 @@ OBJS-$(CONFIG_GBLUR_FILTER) += vf_gblur.o OBJS-$(CONFIG_GBLUR_VULKAN_FILTER) += vf_gblur_vulkan.o vulkan.o vulkan_filter.o OBJS-$(CONFIG_GEQ_FILTER) += vf_geq.o OBJS-$(CONFIG_GRADFUN_FILTER) += vf_gradfun.o +OBJS-$(CONFIG_GRAPHICSUB2TEXT_FILTER) += sf_graphicsub2text.o +OBJS-$(CONFIG_GRAPHICSUB2VIDEO_FILTER) += vf_overlaygraphicsubs.o framesync.o OBJS-$(CONFIG_GRAPHMONITOR_FILTER) += f_graphmonitor.o OBJS-$(CONFIG_GRAYWORLD_FILTER) += vf_grayworld.o OBJS-$(CONFIG_GREYEDGE_FILTER) += vf_colorconstancy.o @@ -397,6 +400,8 @@ OBJS-$(CONFIG_OVERLAY_OPENCL_FILTER) += vf_overlay_opencl.o opencl.o \ OBJS-$(CONFIG_OVERLAY_QSV_FILTER) += vf_overlay_qsv.o framesync.o OBJS-$(CONFIG_OVERLAY_VAAPI_FILTER) += vf_overlay_vaapi.o framesync.o vaapi_vpp.o OBJS-$(CONFIG_OVERLAY_VULKAN_FILTER) += vf_overlay_vulkan.o vulkan.o vulkan_filter.o +OBJS-$(CONFIG_OVERLAYGRAPHICSUBS_FILTER) += vf_overlaygraphicsubs.o framesync.o +OBJS-$(CONFIG_OVERLAYTEXTSUBS_FILTER) += vf_overlaytextsubs.o OBJS-$(CONFIG_OWDENOISE_FILTER) += vf_owdenoise.o OBJS-$(CONFIG_PAD_FILTER) += vf_pad.o OBJS-$(CONFIG_PAD_OPENCL_FILTER) += vf_pad_opencl.o opencl.o opencl/pad.o @@ -490,6 +495,7 @@ OBJS-$(CONFIG_SWAPRECT_FILTER) += vf_swaprect.o OBJS-$(CONFIG_SWAPUV_FILTER) += vf_swapuv.o OBJS-$(CONFIG_TBLEND_FILTER) += vf_blend.o framesync.o OBJS-$(CONFIG_TELECINE_FILTER) += vf_telecine.o +OBJS-$(CONFIG_TEXTSUB2VIDEO_FILTER) += vf_overlaytextsubs.o OBJS-$(CONFIG_THISTOGRAM_FILTER) += vf_histogram.o OBJS-$(CONFIG_THRESHOLD_FILTER) += vf_threshold.o framesync.o OBJS-$(CONFIG_THUMBNAIL_FILTER) += vf_thumbnail.o @@ -582,6 +588,18 @@ OBJS-$(CONFIG_YUVTESTSRC_FILTER) += vsrc_testsrc.o OBJS-$(CONFIG_NULLSINK_FILTER) += vsink_nullsink.o +# subtitle filters +OBJS-$(CONFIG_CENSOR_FILTER) += sf_textmod.o +OBJS-$(CONFIG_SHOW_SPEAKER_FILTER) += sf_textmod.o +OBJS-$(CONFIG_SNULL_FILTER) += sf_snull.o +OBJS-$(CONFIG_SPLITCC_FILTER) += sf_splitcc.o +OBJS-$(CONFIG_STRIM_FILTER) += trim.o +OBJS-$(CONFIG_STRIPSTYLES_FILTER) += sf_stripstyles.o +OBJS-$(CONFIG_SUBFEED_FILTER) += sf_subfeed.o +OBJS-$(CONFIG_SUBSCALE_FILTER) += sf_subscale.o +OBJS-$(CONFIG_TEXT2GRAPHICSUB_FILTER) += sf_text2graphicsub.o +OBJS-$(CONFIG_TEXTMOD_FILTER) += sf_textmod.o + # multimedia filters OBJS-$(CONFIG_A3DSCOPE_FILTER) += avf_a3dscope.o OBJS-$(CONFIG_ABITSCOPE_FILTER) += avf_abitscope.o diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index 119de40b25075..9c843476590c6 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -374,6 +374,8 @@ extern const AVFilter ff_vf_overlay_qsv; extern const AVFilter ff_vf_overlay_vaapi; extern const AVFilter ff_vf_overlay_vulkan; extern const AVFilter ff_vf_overlay_cuda; +extern const AVFilter ff_vf_overlaygraphicsubs; +extern const AVFilter ff_vf_overlaytextsubs; extern const AVFilter ff_vf_owdenoise; extern const AVFilter ff_vf_pad; extern const AVFilter ff_vf_pad_opencl; @@ -564,6 +566,8 @@ extern const AVFilter ff_avf_showspectrumpic; extern const AVFilter ff_avf_showvolume; extern const AVFilter ff_avf_showwaves; extern const AVFilter ff_avf_showwavespic; +extern const AVFilter ff_svf_graphicsub2video; +extern const AVFilter ff_svf_textsub2video; extern const AVFilter ff_vaf_spectrumsynth; /* multimedia sources */ @@ -571,14 +575,29 @@ extern const AVFilter ff_avsrc_avsynctest; extern const AVFilter ff_avsrc_amovie; extern const AVFilter ff_avsrc_movie; +/* subtitle filters */ +extern const AVFilter ff_sf_censor; +extern const AVFilter ff_sf_graphicsub2text; +extern const AVFilter ff_sf_showspeaker; +extern const AVFilter ff_sf_snull; +extern const AVFilter ff_sf_splitcc; +extern const AVFilter ff_sf_strim; +extern const AVFilter ff_sf_stripstyles; +extern const AVFilter ff_sf_subfeed; +extern const AVFilter ff_sf_subscale; +extern const AVFilter ff_sf_text2graphicsub; +extern const AVFilter ff_sf_textmod; + /* those filters are part of public or internal API, * they are formatted to not be found by the grep * as they are manually added again (due to their 'names' * being the same while having different 'types'). */ extern const AVFilter ff_asrc_abuffer; extern const AVFilter ff_vsrc_buffer; +extern const AVFilter ff_ssrc_sbuffer; extern const AVFilter ff_asink_abuffer; extern const AVFilter ff_vsink_buffer; +extern const AVFilter ff_ssink_sbuffer; extern const AVFilter ff_af_afifo; extern const AVFilter ff_vf_fifo; diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c index cc5505e65b15b..6cd83ae34a63e 100644 --- a/libavfilter/avfilter.c +++ b/libavfilter/avfilter.c @@ -43,6 +43,7 @@ #include "formats.h" #include "framepool.h" #include "internal.h" +#include "subtitles.h" static void tlog_ref(void *ctx, AVFrame *ref, int end) { @@ -53,7 +54,8 @@ static void tlog_ref(void *ctx, AVFrame *ref, int end) ref->linesize[0], ref->linesize[1], ref->linesize[2], ref->linesize[3], ref->pts, ref->pkt_pos); - if (ref->width) { + switch(ref->type) { + case AVMEDIA_TYPE_VIDEO: ff_tlog(ctx, " a:%d/%d s:%dx%d i:%c iskey:%d type:%c", ref->sample_aspect_ratio.num, ref->sample_aspect_ratio.den, ref->width, ref->height, @@ -61,8 +63,8 @@ static void tlog_ref(void *ctx, AVFrame *ref, int end) ref->top_field_first ? 'T' : 'B', /* Top / Bottom */ ref->key_frame, av_get_picture_type_char(ref->pict_type)); - } - if (ref->nb_samples) { + break; + case AVMEDIA_TYPE_AUDIO: AVBPrint bprint; av_bprint_init(&bprint, 1, AV_BPRINT_SIZE_UNLIMITED); @@ -72,6 +74,7 @@ static void tlog_ref(void *ctx, AVFrame *ref, int end) ref->nb_samples, ref->sample_rate); av_bprint_finalize(&bprint, NULL); + break; } ff_tlog(ctx, "]%s", end ? "\n" : ""); @@ -355,6 +358,14 @@ int avfilter_config_links(AVFilterContext *filter) if (!link->time_base.num && !link->time_base.den) link->time_base = (AVRational) {1, link->sample_rate}; + + break; + + case AVMEDIA_TYPE_SUBTITLE: + if (!link->time_base.num && !link->time_base.den) + link->time_base = inlink ? inlink->time_base : AV_TIME_BASE_Q; + + break; } if (link->src->nb_inputs && link->src->inputs[0]->hw_frames_ctx && @@ -450,7 +461,7 @@ static int64_t guess_status_pts(AVFilterContext *ctx, int status, AVRational lin return AV_NOPTS_VALUE; } -static int ff_request_frame_to_filter(AVFilterLink *link) +static int ff_request_frame_to_filter(AVFilterLink *link, int input_index) { int ret = -1; @@ -459,8 +470,8 @@ static int ff_request_frame_to_filter(AVFilterLink *link) link->frame_blocked_in = 1; if (link->srcpad->request_frame) ret = link->srcpad->request_frame(link); - else if (link->src->inputs[0]) - ret = ff_request_frame(link->src->inputs[0]); + else if (link->src->inputs[input_index]) + ret = ff_request_frame(link->src->inputs[input_index]); if (ret < 0) { if (ret != AVERROR(EAGAIN) && ret != link->status_in) ff_avfilter_link_set_in_status(link, ret, guess_status_pts(link->src, ret, link->time_base)); @@ -1022,6 +1033,10 @@ int ff_filter_frame(AVFilterLink *link, AVFrame *frame) av_assert1(frame->width == link->w); av_assert1(frame->height == link->h); } + } else if (link->type == AVMEDIA_TYPE_SUBTITLE) { + if (frame->format != link->format) { + av_log(link->dst, AV_LOG_WARNING, "Subtitle format change from %d to %d\n", link->format, frame->format); + } } else { if (frame->format != link->format) { av_log(link->dst, AV_LOG_ERROR, "Format change is not supported\n"); @@ -1156,6 +1171,14 @@ static int forward_status_change(AVFilterContext *filter, AVFilterLink *in) { unsigned out = 0, progress = 0; int ret; + int input_index = 0; + + for (int i = 0; i < in->dst->nb_inputs; i++) { + if (&in->dst->input_pads[i] == in->dstpad) { + input_index = i; + break; + } + } av_assert0(!in->status_out); if (!filter->nb_outputs) { @@ -1165,7 +1188,7 @@ static int forward_status_change(AVFilterContext *filter, AVFilterLink *in) while (!in->status_out) { if (!filter->outputs[out]->status_in) { progress++; - ret = ff_request_frame_to_filter(filter->outputs[out]); + ret = ff_request_frame_to_filter(filter->outputs[out], input_index); if (ret < 0) return ret; } @@ -1202,7 +1225,7 @@ static int ff_filter_activate_default(AVFilterContext *filter) for (i = 0; i < filter->nb_outputs; i++) { if (filter->outputs[i]->frame_wanted_out && !filter->outputs[i]->frame_blocked_in) { - return ff_request_frame_to_filter(filter->outputs[i]); + return ff_request_frame_to_filter(filter->outputs[i], 0); } } return FFERROR_NOT_READY; @@ -1462,6 +1485,9 @@ int ff_inlink_make_frame_writable(AVFilterLink *link, AVFrame **rframe) case AVMEDIA_TYPE_AUDIO: out = ff_get_audio_buffer(link, frame->nb_samples); break; + case AVMEDIA_TYPE_SUBTITLE: + out = ff_get_subtitles_buffer(link, link->format); + break; default: return AVERROR(EINVAL); } diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h index 6d68ebece4ff0..82f6b21520472 100644 --- a/libavfilter/avfilter.h +++ b/libavfilter/avfilter.h @@ -45,6 +45,7 @@ #include "libavutil/log.h" #include "libavutil/samplefmt.h" #include "libavutil/pixfmt.h" +#include "libavutil/subfmt.h" #include "libavutil/rational.h" #include "libavfilter/version_major.h" @@ -356,6 +357,12 @@ typedef struct AVFilter { * and outputs use the same sample rate and channel count/layout. */ const enum AVSampleFormat *samples_list; + /** + * Analogous to pixels, but delimited by AV_SUBTITLE_FMT_NONE + * and restricted to filters that only have AVMEDIA_TYPE_SUBTITLE + * inputs and outputs. + */ + const enum AVSubtitleType *subs_list; /** * Equivalent to { pix_fmt, AV_PIX_FMT_NONE } as pixels_list. */ @@ -364,6 +371,10 @@ typedef struct AVFilter { * Equivalent to { sample_fmt, AV_SAMPLE_FMT_NONE } as samples_list. */ enum AVSampleFormat sample_fmt; + /** + * Equivalent to { sub_fmt, AV_SUBTITLE_FMT_NONE } as subs_list. + */ + enum AVSubtitleType sub_fmt; } formats; int priv_size; ///< size of private data to allocate for the filter diff --git a/libavfilter/avfiltergraph.c b/libavfilter/avfiltergraph.c index 53f468494d358..f7547467f03ad 100644 --- a/libavfilter/avfiltergraph.c +++ b/libavfilter/avfiltergraph.c @@ -309,6 +309,8 @@ static int filter_link_check_formats(void *log, AVFilterLink *link, AVFilterForm return ret; break; + case AVMEDIA_TYPE_SUBTITLE: + return 0; default: av_assert0(!"reached"); } @@ -439,6 +441,9 @@ static int query_formats(AVFilterGraph *graph, void *log_ctx) if (!link) continue; + if (link->type == AVMEDIA_TYPE_SUBTITLE) + continue; + neg = ff_filter_get_negotiation(link); av_assert0(neg); for (neg_step = 1; neg_step < neg->nb_mergers; neg_step++) { diff --git a/libavfilter/buffersink.c b/libavfilter/buffersink.c index e269cf72d1b1f..204e9bad6ccc5 100644 --- a/libavfilter/buffersink.c +++ b/libavfilter/buffersink.c @@ -30,6 +30,8 @@ #include "libavutil/internal.h" #include "libavutil/opt.h" +#include "libavcodec/avcodec.h" + #define FF_INTERNAL_FIELDS 1 #include "framequeue.h" @@ -61,6 +63,10 @@ typedef struct BufferSinkContext { int *sample_rates; ///< list of accepted sample rates int sample_rates_size; + /* only used for subtitles */ + enum AVSubtitleType *subtitle_types; ///< list of accepted subtitle types, must be terminated with -1 + int subtitle_types_size; + AVFrame *peeked_frame; } BufferSinkContext; @@ -372,6 +378,28 @@ static int asink_query_formats(AVFilterContext *ctx) return 0; } +static int ssink_query_formats(AVFilterContext *ctx) +{ + BufferSinkContext *buf = ctx->priv; + AVFilterFormats *formats = NULL; + unsigned i; + int ret; + + CHECK_LIST_SIZE(subtitle_types) + if (buf->subtitle_types_size) { + for (i = 0; i < NB_ITEMS(buf->subtitle_types); i++) + if ((ret = ff_add_format(&formats, buf->subtitle_types[i])) < 0) + return ret; + if ((ret = ff_set_common_formats(ctx, formats)) < 0) + return ret; + } else { + if ((ret = ff_default_query_formats(ctx)) < 0) + return ret; + } + + return 0; +} + #define OFFSET(x) offsetof(BufferSinkContext, x) #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM static const AVOption buffersink_options[] = { @@ -395,9 +423,16 @@ static const AVOption abuffersink_options[] = { { NULL }, }; #undef FLAGS +#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_SUBTITLE_PARAM +static const AVOption sbuffersink_options[] = { + { "subtitle_types", "set the supported subtitle formats", OFFSET(subtitle_types), AV_OPT_TYPE_BINARY, .flags = FLAGS }, + { NULL }, +}; +#undef FLAGS AVFILTER_DEFINE_CLASS(buffersink); AVFILTER_DEFINE_CLASS(abuffersink); +AVFILTER_DEFINE_CLASS(sbuffersink); static const AVFilterPad avfilter_vsink_buffer_inputs[] = { { @@ -436,3 +471,22 @@ const AVFilter ff_asink_abuffer = { .outputs = NULL, FILTER_QUERY_FUNC(asink_query_formats), }; + +static const AVFilterPad avfilter_ssink_sbuffer_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + }, +}; + +const AVFilter ff_ssink_sbuffer = { + .name = "sbuffersink", + .description = NULL_IF_CONFIG_SMALL("Buffer subtitle frames, and make them available to the end of the filter graph."), + .priv_class = &sbuffersink_class, + .priv_size = sizeof(BufferSinkContext), + .init = common_init, + .activate = activate, + FILTER_INPUTS(avfilter_ssink_sbuffer_inputs), + .outputs = NULL, + FILTER_QUERY_FUNC(ssink_query_formats), +}; diff --git a/libavfilter/buffersink.h b/libavfilter/buffersink.h index 01e7c747d8eea..42c164e670d3a 100644 --- a/libavfilter/buffersink.h +++ b/libavfilter/buffersink.h @@ -128,6 +128,13 @@ typedef struct AVABufferSinkParams { */ attribute_deprecated AVABufferSinkParams *av_abuffersink_params_alloc(void); + +/** + * Deprecated and unused struct to use for initializing an sbuffersink context. + */ +typedef struct AVSBufferSinkParams { + const int *subtitle_type; +} AVSBufferSinkParams; #endif /** diff --git a/libavfilter/buffersrc.c b/libavfilter/buffersrc.c index ae8bba19b077a..21465fe5e3ceb 100644 --- a/libavfilter/buffersrc.c +++ b/libavfilter/buffersrc.c @@ -39,6 +39,7 @@ #include "formats.h" #include "internal.h" #include "video.h" +#include "libavcodec/avcodec.h" typedef struct BufferSourceContext { const AVClass *class; @@ -63,6 +64,9 @@ typedef struct BufferSourceContext { char *channel_layout_str; AVChannelLayout ch_layout; + /* subtitle only */ + enum AVSubtitleType subtitle_type; + int eof; } BufferSourceContext; @@ -143,6 +147,13 @@ FF_ENABLE_DEPRECATION_WARNINGS return ret; } break; + case AVMEDIA_TYPE_SUBTITLE: + s->subtitle_type = param->format; + if (param->width > 0) + s->w = param->width; + if (param->height > 0) + s->h = param->height; + break; default: return AVERROR_BUG; } @@ -224,6 +235,8 @@ FF_ENABLE_DEPRECATION_WARNINGS CHECK_AUDIO_PARAM_CHANGE(ctx, s, frame->sample_rate, frame->ch_layout, frame->format, frame->pts); break; + case AVMEDIA_TYPE_SUBTITLE: + break; default: return AVERROR(EINVAL); } @@ -303,6 +316,7 @@ unsigned av_buffersrc_get_nb_failed_requests(AVFilterContext *buffer_src) #define OFFSET(x) offsetof(BufferSourceContext, x) #define A AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_AUDIO_PARAM #define V AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM +#define S AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_SUBTITLE_PARAM static const AVOption buffer_options[] = { { "width", NULL, OFFSET(w), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V }, @@ -332,6 +346,16 @@ static const AVOption abuffer_options[] = { AVFILTER_DEFINE_CLASS(abuffer); +static const AVOption sbuffer_options[] = { + { "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, INT_MAX, S }, + { "subtitle_type", NULL, OFFSET(subtitle_type), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, S }, + { "width", NULL, OFFSET(w), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V }, + { "height", NULL, OFFSET(h), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V }, + { NULL }, +}; + +AVFILTER_DEFINE_CLASS(sbuffer); + static av_cold int init_audio(AVFilterContext *ctx) { BufferSourceContext *s = ctx->priv; @@ -400,6 +424,21 @@ FF_ENABLE_DEPRECATION_WARNINGS return ret; } +static av_cold int init_subtitle(AVFilterContext *ctx) +{ + BufferSourceContext *c = ctx->priv; + + if (c->subtitle_type == AV_SUBTITLE_FMT_BITMAP) + av_log(ctx, AV_LOG_VERBOSE, "graphical subtitles - w:%d h:%d tb:%d/%d\n", + c->w, c->h, c->time_base.num, c->time_base.den); + else + av_log(ctx, AV_LOG_VERBOSE, "text subtitles - w:%d h:%d tb:%d/%d\n", + c->w, c->h, c->time_base.num, c->time_base.den); + + return 0; +} + + static av_cold void uninit(AVFilterContext *ctx) { BufferSourceContext *s = ctx->priv; @@ -433,6 +472,11 @@ static int query_formats(AVFilterContext *ctx) if ((ret = ff_set_common_channel_layouts(ctx, channel_layouts)) < 0) return ret; break; + case AVMEDIA_TYPE_SUBTITLE: + if ((ret = ff_add_format (&formats, c->subtitle_type)) < 0 || + (ret = ff_set_common_formats (ctx , formats )) < 0) + return ret; + break; default: return AVERROR(EINVAL); } @@ -463,6 +507,11 @@ static int config_props(AVFilterLink *link) return ret; } break; + case AVMEDIA_TYPE_SUBTITLE: + link->format = c->subtitle_type; + link->w = c->w; + link->h = c->h; + break; default: return AVERROR(EINVAL); } @@ -527,3 +576,26 @@ const AVFilter ff_asrc_abuffer = { FILTER_QUERY_FUNC(query_formats), .priv_class = &abuffer_class, }; + +static const AVFilterPad avfilter_ssrc_sbuffer_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .request_frame = request_frame, + .config_props = config_props, + }, +}; + +const AVFilter ff_ssrc_sbuffer = { + .name = "sbuffer", + .description = NULL_IF_CONFIG_SMALL("Buffer subtitle frames, and make them accessible to the filterchain."), + .priv_size = sizeof(BufferSourceContext), + + .init = init_subtitle, + .uninit = uninit, + + .inputs = NULL, + FILTER_OUTPUTS(avfilter_ssrc_sbuffer_outputs), + FILTER_QUERY_FUNC(query_formats), + .priv_class = &sbuffer_class, +}; diff --git a/libavfilter/buffersrc.h b/libavfilter/buffersrc.h index 3b248b37cd82c..45a657bbb6ea8 100644 --- a/libavfilter/buffersrc.h +++ b/libavfilter/buffersrc.h @@ -74,6 +74,7 @@ typedef struct AVBufferSrcParameters { /** * video: the pixel format, value corresponds to enum AVPixelFormat * audio: the sample format, value corresponds to enum AVSampleFormat + * subtitles: the subtitle format, value corresponds to enum AVSubtitleType */ int format; /** diff --git a/libavfilter/formats.c b/libavfilter/formats.c index e8c2888c0c00b..12585ed4281e5 100644 --- a/libavfilter/formats.c +++ b/libavfilter/formats.c @@ -19,6 +19,7 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ +#include "libavutil/subfmt.h" #include "libavutil/avassert.h" #include "libavutil/channel_layout.h" #include "libavutil/common.h" @@ -491,6 +492,13 @@ AVFilterFormats *ff_all_formats(enum AVMediaType type) return NULL; fmt++; } + } else if (type == AVMEDIA_TYPE_SUBTITLE) { + if (ff_add_format(&ret, AV_SUBTITLE_FMT_BITMAP) < 0) + return NULL; + if (ff_add_format(&ret, AV_SUBTITLE_FMT_ASS) < 0) + return NULL; + if (ff_add_format(&ret, AV_SUBTITLE_FMT_TEXT) < 0) + return NULL; } return ret; @@ -774,6 +782,10 @@ int ff_default_query_formats(AVFilterContext *ctx) type = AVMEDIA_TYPE_AUDIO; formats = ff_make_format_list(f->formats.samples_list); break; + case FF_FILTER_FORMATS_SUBFMTS_LIST: + type = AVMEDIA_TYPE_SUBTITLE; + formats = ff_make_format_list(f->formats.subs_list); + break; case FF_FILTER_FORMATS_SINGLE_PIXFMT: type = AVMEDIA_TYPE_VIDEO; formats = ff_make_formats_list_singleton(f->formats.pix_fmt); @@ -782,6 +794,10 @@ int ff_default_query_formats(AVFilterContext *ctx) type = AVMEDIA_TYPE_AUDIO; formats = ff_make_formats_list_singleton(f->formats.sample_fmt); break; + case FF_FILTER_FORMATS_SINGLE_SUBFMT: + type = AVMEDIA_TYPE_SUBTITLE; + formats = ff_make_formats_list_singleton(f->formats.sub_fmt); + break; default: av_assert2(!"Unreachable"); /* Intended fallthrough */ diff --git a/libavfilter/formats.h b/libavfilter/formats.h index 22224dce2d77a..6cf952a059b5b 100644 --- a/libavfilter/formats.h +++ b/libavfilter/formats.h @@ -183,6 +183,9 @@ av_warn_unused_result int ff_add_channel_layout(AVFilterChannelLayouts **l, const AVChannelLayout *channel_layout); +av_warn_unused_result +int ff_add_subtitle_type(AVFilterFormats **avff, int64_t fmt); + /** * Add *ref as a new reference to f. */ diff --git a/libavfilter/internal.h b/libavfilter/internal.h index aaf2c6c584c11..dc56960eef274 100644 --- a/libavfilter/internal.h +++ b/libavfilter/internal.h @@ -89,6 +89,7 @@ struct AVFilterPad { union { AVFrame *(*video)(AVFilterLink *link, int w, int h); AVFrame *(*audio)(AVFilterLink *link, int nb_samples); + AVFrame *(*subtitle)(AVFilterLink *link, int format); } get_buffer; /** @@ -147,9 +148,11 @@ static av_always_inline int ff_filter_execute(AVFilterContext *ctx, avfilter_act enum FilterFormatsState { /** - * The default value meaning that this filter supports all formats - * and (for audio) sample rates and channel layouts/counts as long - * as these properties agree for all inputs and outputs. + * The default value meaning that this filter supports + * - For video: all formats + * - For audio: all sample rates and channel layouts/counts + * - For subtitles: all subtitle formats + * as long as these properties agree for all inputs and outputs. * This state is only allowed in case all inputs and outputs actually * have the same type. * The union is unused in this state. @@ -160,8 +163,10 @@ enum FilterFormatsState { FF_FILTER_FORMATS_QUERY_FUNC, ///< formats.query active. FF_FILTER_FORMATS_PIXFMT_LIST, ///< formats.pixels_list active. FF_FILTER_FORMATS_SAMPLEFMTS_LIST, ///< formats.samples_list active. + FF_FILTER_FORMATS_SUBFMTS_LIST, ///< formats.subs_list active. FF_FILTER_FORMATS_SINGLE_PIXFMT, ///< formats.pix_fmt active FF_FILTER_FORMATS_SINGLE_SAMPLEFMT, ///< formats.sample_fmt active. + FF_FILTER_FORMATS_SINGLE_SUBFMT, ///< formats.sub_fmt active. }; #define FILTER_QUERY_FUNC(func) \ @@ -173,16 +178,24 @@ enum FilterFormatsState { #define FILTER_SAMPLEFMTS_ARRAY(array) \ .formats.samples_list = array, \ .formats_state = FF_FILTER_FORMATS_SAMPLEFMTS_LIST +#define FILTER_SUBFMTS_ARRAY(array) \ + .formats.subs_list = array, \ + .formats_state = FF_FILTER_FORMATS_SUBFMTS_LIST #define FILTER_PIXFMTS(...) \ FILTER_PIXFMTS_ARRAY(((const enum AVPixelFormat []) { __VA_ARGS__, AV_PIX_FMT_NONE })) #define FILTER_SAMPLEFMTS(...) \ FILTER_SAMPLEFMTS_ARRAY(((const enum AVSampleFormat[]) { __VA_ARGS__, AV_SAMPLE_FMT_NONE })) +#define FILTER_SUBFMTS(...) \ + FILTER_SUBFMTS_ARRAY(((const enum AVSubtitleType[]) { __VA_ARGS__, AV_SUBTITLE_FMT_NONE })) #define FILTER_SINGLE_PIXFMT(pix_fmt_) \ .formats.pix_fmt = pix_fmt_, \ .formats_state = FF_FILTER_FORMATS_SINGLE_PIXFMT #define FILTER_SINGLE_SAMPLEFMT(sample_fmt_) \ .formats.sample_fmt = sample_fmt_, \ .formats_state = FF_FILTER_FORMATS_SINGLE_SAMPLEFMT +#define FILTER_SINGLE_SUBFMT(sub_fmt_) \ + .formats.sub_fmt = sub_fmt_, \ + .formats_state = FF_FILTER_FORMATS_SINGLE_SUBFMT #define FILTER_INOUTPADS(inout, array) \ .inout = array, \ diff --git a/libavfilter/sf_graphicsub2text.c b/libavfilter/sf_graphicsub2text.c new file mode 100644 index 0000000000000..47c7030939df4 --- /dev/null +++ b/libavfilter/sf_graphicsub2text.c @@ -0,0 +1,1137 @@ +/* + * Copyright (c) 2021 softworkz + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * subtitle filter to convert graphical subs to text subs via OCR + */ + +#include +#include + +#include "drawutils.h" +#include "libavutil/opt.h" +#include "subtitles.h" + +#include "libavcodec/elbg.h" + +enum { + RFLAGS_NONE = 0, + RFLAGS_HALIGN = 1 << 0, + RFLAGS_VALIGN = 1 << 1, + RFLAGS_FBOLD = 1 << 2, + RFLAGS_FITALIC = 1 << 3, + RFLAGS_FUNDERLINE = 1 << 4, + RFLAGS_FONT = 1 << 5, + RFLAGS_FONTSIZE = 1 << 6, + RFLAGS_COLOR = 1 << 7, + RFLAGS_OUTLINECOLOR = 1 << 8, + RFLAGS_ALL = RFLAGS_HALIGN | RFLAGS_VALIGN | RFLAGS_FBOLD | RFLAGS_FITALIC | RFLAGS_FUNDERLINE | + RFLAGS_FONT | RFLAGS_FONTSIZE | RFLAGS_COLOR | RFLAGS_OUTLINECOLOR, +}; + +typedef struct SubOcrContext { + const AVClass *class; + int w, h; + + TessBaseAPI *tapi; + TessOcrEngineMode ocr_mode; + char *tessdata_path; + char *language; + int preprocess_images; + int dump_bitmaps; + int delay_when_no_duration; + int recognize; + double font_size_factor; + + int readorder_counter; + + AVFrame *pending_frame; + AVBufferRef *subtitle_header; + AVBPrint buffer; + + // Color Quantization Fields + struct ELBGContext *ctx; + AVLFG lfg; + int *codeword; + int *codeword_closest_codebook_idxs; + int *codebook; + int r_idx, g_idx, b_idx, a_idx; + int64_t last_subtitle_pts; +} SubOcrContext; + +typedef struct OcrImageProps { + int background_color_index; + int fill_color_index; + +} OcrImageProps; + +static int64_t ms_to_avtb(int64_t ms) +{ + return av_rescale_q(ms, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q); +} + +static int create_ass_header(AVFilterContext* ctx) +{ + SubOcrContext* s = ctx->priv; + + if (!(s->w && s->h)) { + av_log(ctx, AV_LOG_WARNING, "create_ass_header: no width and height specified!\n"); + s->w = ASS_DEFAULT_PLAYRESX; + s->h = ASS_DEFAULT_PLAYRESY; + } + + char* subtitle_header_text = avpriv_ass_get_subtitle_header_full(s->w, s->h, ASS_DEFAULT_FONT, ASS_DEFAULT_FONT_SIZE, + ASS_DEFAULT_COLOR, ASS_DEFAULT_COLOR, ASS_DEFAULT_BACK_COLOR, ASS_DEFAULT_BACK_COLOR, ASS_DEFAULT_BOLD, + ASS_DEFAULT_ITALIC, ASS_DEFAULT_UNDERLINE, ASS_DEFAULT_BORDERSTYLE, ASS_DEFAULT_ALIGNMENT, 0); + + if (!subtitle_header_text) + return AVERROR(ENOMEM); + + s->subtitle_header = av_buffer_create((uint8_t*)subtitle_header_text, strlen(subtitle_header_text) + 1, NULL, NULL, 0); + + if (!s->subtitle_header) + return AVERROR(ENOMEM); + + return 0; +} + +static int init(AVFilterContext *ctx) +{ + SubOcrContext *s = ctx->priv; + const char* tver = TessVersion(); + uint8_t rgba_map[4]; + int ret; + + s->tapi = TessBaseAPICreate(); + + if (!s->tapi || !tver || !strlen(tver)) { + av_log(ctx, AV_LOG_ERROR, "Failed to access libtesseract\n"); + return AVERROR(ENOSYS); + } + + av_log(ctx, AV_LOG_VERBOSE, "Initializing libtesseract, version: %s\n", tver); + + ret = TessBaseAPIInit4(s->tapi, s->tessdata_path, s->language, s->ocr_mode, NULL, 0, NULL, NULL, 0, 1); + if (ret < 0 ) { + av_log(ctx, AV_LOG_ERROR, "Failed to initialize libtesseract. Error: %d\n", ret); + return AVERROR(ENOSYS); + } + + ret = TessBaseAPISetVariable(s->tapi, "tessedit_char_blacklist", "|"); + if (ret < 0 ) { + av_log(ctx, AV_LOG_ERROR, "Failed to set 'tessedit_char_blacklist'. Error: %d\n", ret); + return AVERROR(EINVAL); + } + + av_bprint_init(&s->buffer, 0, AV_BPRINT_SIZE_UNLIMITED); + + ff_fill_rgba_map(&rgba_map[0], AV_PIX_FMT_RGB32); + + s->r_idx = rgba_map[0]; // R + s->g_idx = rgba_map[1]; // G + s->b_idx = rgba_map[2]; // B + s->a_idx = rgba_map[3]; // A + + av_lfg_init(&s->lfg, 123456789); + + return 0; +} + +static void uninit(AVFilterContext *ctx) +{ + SubOcrContext *s = ctx->priv; + + av_buffer_unref(&s->subtitle_header); + av_bprint_finalize(&s->buffer, NULL); + + if (s->tapi) { + TessBaseAPIEnd(s->tapi); + TessBaseAPIDelete(s->tapi); + } + + avpriv_elbg_free(&s->ctx); +} + +static int query_formats(AVFilterContext *ctx) +{ + AVFilterFormats *formats, *formats2; + AVFilterLink *inlink = ctx->inputs[0]; + AVFilterLink *outlink = ctx->outputs[0]; + static const enum AVSubtitleType in_fmts[] = { AV_SUBTITLE_FMT_BITMAP, AV_SUBTITLE_FMT_NONE }; + static const enum AVSubtitleType out_fmts[] = { AV_SUBTITLE_FMT_ASS, AV_SUBTITLE_FMT_NONE }; + int ret; + + /* set input format */ + formats = ff_make_format_list(in_fmts); + if ((ret = ff_formats_ref(formats, &inlink->outcfg.formats)) < 0) + return ret; + + /* set output format */ + formats2 = ff_make_format_list(out_fmts); + if ((ret = ff_formats_ref(formats2, &outlink->incfg.formats)) < 0) + return ret; + + return 0; +} + +static int config_input(AVFilterLink *inlink) +{ + AVFilterContext *ctx = inlink->dst; + SubOcrContext *s = ctx->priv; + + if (s->w <= 0 || s->h <= 0) { + s->w = inlink->w; + s->h = inlink->h; + } + + return create_ass_header(ctx); +} + +static int config_output(AVFilterLink *outlink) +{ + AVFilterLink *inlink = outlink->src->inputs[0]; + const AVFilterContext *ctx = outlink->src; + SubOcrContext *s = ctx->priv; + + outlink->format = AV_SUBTITLE_FMT_ASS; + outlink->w = s->w; + outlink->h = s->h; + outlink->time_base = inlink->time_base; + outlink->frame_rate = inlink->frame_rate; + + return 0; +} + +static void free_subtitle_area(AVSubtitleArea *area) +{ + for (unsigned n = 0; n < FF_ARRAY_ELEMS(area->buf); n++) + av_buffer_unref(&area->buf[n]); + + av_freep(&area->text); + av_freep(&area->ass); + av_free(area); + +} + +static AVSubtitleArea *copy_subtitle_area(const AVSubtitleArea *src) +{ + AVSubtitleArea *dst = av_mallocz(sizeof(AVSubtitleArea)); + + if (!dst) + return NULL; + + dst->x = src->x; + dst->y = src->y; + dst->w = src->w; + dst->h = src->h; + dst->nb_colors = src->nb_colors; + dst->type = src->type; + dst->flags = src->flags; + + for (unsigned i = 0; i < AV_NUM_BUFFER_POINTERS; i++) { + if (src->h > 0 && src->w > 0 && src->buf[i]) { + dst->buf[0] = av_buffer_ref(src->buf[i]); + if (!dst->buf[i]) + return NULL; + + const int ret = av_buffer_make_writable(&dst->buf[i]); + if (ret < 0) + return NULL; + + dst->linesize[i] = src->linesize[i]; + } + } + + memcpy(&dst->pal[0], &src->pal[0], sizeof(src->pal[0]) * 256); + + + return dst; +} + +static int quantize_image_colors(SubOcrContext *const s, AVSubtitleArea *subtitle_area) +{ + const int num_quantized_colors = 3; + int k, ret; + const int codeword_length = subtitle_area->w * subtitle_area->h; + uint8_t *src_data = subtitle_area->buf[0]->data; + + if (subtitle_area->nb_colors <= num_quantized_colors) { + av_log(s, AV_LOG_DEBUG, "No need to quantize colors. Color count: %d\n", subtitle_area->nb_colors); + return 0; + } + + // Convert palette to grayscale + for (int i = 0; i < subtitle_area->nb_colors; i++) { + uint8_t *color = (uint8_t *)&subtitle_area->pal[i]; + const uint8_t average = (uint8_t)(((int)color[s->r_idx] + color[s->g_idx] + color[s->b_idx]) / 3); + color[s->b_idx] = average; + color[s->g_idx] = average; + color[s->r_idx] = average; + } + + /* Re-Initialize */ + s->codeword = av_realloc_f(s->codeword, codeword_length, 4 * sizeof(*s->codeword)); + if (!s->codeword) + return AVERROR(ENOMEM); + + s->codeword_closest_codebook_idxs = av_realloc_f(s->codeword_closest_codebook_idxs, + codeword_length, sizeof(*s->codeword_closest_codebook_idxs)); + if (!s->codeword_closest_codebook_idxs) + return AVERROR(ENOMEM); + + s->codebook = av_realloc_f(s->codebook, num_quantized_colors, 4 * sizeof(*s->codebook)); + if (!s->codebook) + return AVERROR(ENOMEM); + + /* build the codeword */ + k = 0; + for (int i = 0; i < subtitle_area->h; i++) { + uint8_t *p = src_data; + for (int j = 0; j < subtitle_area->w; j++) { + const uint8_t *color = (uint8_t *)&subtitle_area->pal[*p]; + s->codeword[k++] = color[s->b_idx]; + s->codeword[k++] = color[s->g_idx]; + s->codeword[k++] = color[s->r_idx]; + s->codeword[k++] = color[s->a_idx]; + p++; + } + src_data += subtitle_area->linesize[0]; + } + + /* compute the codebook */ + ret = avpriv_elbg_do(&s->ctx, s->codeword, 4, codeword_length, s->codebook, + num_quantized_colors, 1, s->codeword_closest_codebook_idxs, &s->lfg, 0); + if (ret < 0) + return ret; + + /* Write Palette */ + for (int i = 0; i < num_quantized_colors; i++) { + subtitle_area->pal[i] = s->codebook[i*4+3] << 24 | + (s->codebook[i*4+2] << 16) | + (s->codebook[i*4+1] << 8) | + (s->codebook[i*4 ] << 0); + } + + + av_log(s, AV_LOG_DEBUG, "Quantized colors from %d to %d\n", subtitle_area->nb_colors, num_quantized_colors); + + subtitle_area->nb_colors = num_quantized_colors; + src_data = subtitle_area->buf[0]->data; + + /* Write Image */ + k = 0; + for (int i = 0; i < subtitle_area->h; i++) { + uint8_t *p = src_data; + for (int j = 0; j < subtitle_area->w; j++, p++) { + p[0] = (uint8_t)s->codeword_closest_codebook_idxs[k++]; + } + + src_data += subtitle_area->linesize[0]; + } + + return ret; +} + +#define MEASURE_LINE_COUNT 6 + +static uint8_t get_background_color_index(SubOcrContext *const s, const AVSubtitleArea *subtitle_area) +{ + const int linesize = subtitle_area->linesize[0]; + int index_counts[256] = {0}; + const unsigned int line_offsets[MEASURE_LINE_COUNT] = { + 0, + linesize, + 2 * linesize, + (subtitle_area->h - 3) * linesize, + (subtitle_area->h - 2) * linesize, + (subtitle_area->h - 1) * linesize + }; + + const uint8_t *src_data = subtitle_area->buf[0]->data; + const uint8_t tl = src_data[0]; + const uint8_t tr = src_data[subtitle_area->w - 1]; + const uint8_t bl = src_data[(subtitle_area->h - 1) * linesize + 0]; + const uint8_t br = src_data[(subtitle_area->h - 1) * linesize + subtitle_area->w - 1]; + uint8_t max_index = 0; + int max_count; + + // When all corner pixels are equal, assume that as background color + if (tl == tr == bl == br || subtitle_area->h < 6) + return tl; + + for (unsigned int i = 0; i < MEASURE_LINE_COUNT; i++) { + uint8_t *p = subtitle_area->buf[0]->data + line_offsets[i]; + for (int k = 0; k < subtitle_area->w; k++) + index_counts[p[k]]++; + } + + max_count = index_counts[0]; + + for (uint8_t i = 1; i < subtitle_area->nb_colors; i++) { + if (index_counts[i] > max_count) { + max_count = index_counts[i]; + max_index = i; + } + } + + return max_index; +} + +static uint8_t get_text_color_index(SubOcrContext *const s, const AVSubtitleArea *subtitle_area, const uint8_t bg_color_index, uint8_t *outline_color_index) +{ + const int linesize = subtitle_area->linesize[0]; + int index_counts[256] = {0}; + uint8_t last_index = bg_color_index; + int max_count, min_req_count; + uint8_t max_index = 0; + + for (int i = 3; i < subtitle_area->h - 3; i += 5) { + const uint8_t *p = subtitle_area->buf[0]->data + ((ptrdiff_t)linesize * i); + for (int k = 0; k < subtitle_area->w; k++) { + const uint8_t cur_index = p[k]; + + // When color hasn't changed, continue + if (cur_index == last_index) + continue; + + if (cur_index != bg_color_index) + index_counts[cur_index]++; + + last_index = cur_index; + } + } + + max_count = index_counts[0]; + + for (uint8_t i = 1; i < subtitle_area->nb_colors; i++) { + if (index_counts[i] > max_count) { + max_count = index_counts[i]; + max_index = i; + } + } + + min_req_count = max_count / 3; + + for (uint8_t i = 1; i < subtitle_area->nb_colors; i++) { + if (index_counts[i] < min_req_count) + index_counts[i] = 0; + } + + *outline_color_index = max_index; + + index_counts[max_index] = 0; + max_count = 0; + + for (uint8_t i = 0; i < subtitle_area->nb_colors; i++) { + if (index_counts[i] > max_count) { + max_count = index_counts[i]; + max_index = i; + } + } + + if (*outline_color_index == max_index) + *outline_color_index = 255; + + return max_index; +} + +static void make_image_binary(SubOcrContext *const s, AVSubtitleArea *subtitle_area, const uint8_t text_color_index) +{ + for (int i = 0; i < subtitle_area->nb_colors; i++) { + + if (i != text_color_index) + subtitle_area->pal[i] = 0xffffffff; + else + subtitle_area->pal[i] = 0xff000000; + } +} + +static int get_crop_region(SubOcrContext *const s, const AVSubtitleArea *subtitle_area, uint8_t text_color_index, int *x, int *y, int *w, int *h) +{ + const int linesize = subtitle_area->linesize[0]; + int max_y = 0, max_x = 0; + int min_y = subtitle_area->h - 1, min_x = subtitle_area->w - 1; + + for (int i = 0; i < subtitle_area->h; i += 3) { + const uint8_t *p = subtitle_area->buf[0]->data + ((ptrdiff_t)linesize * i); + for (int k = 0; k < subtitle_area->w; k += 2) { + if (p[k] == text_color_index) { + min_y = FFMIN(min_y, i); + min_x = FFMIN(min_x, k); + max_y = FFMAX(max_y, i); + max_x = FFMAX(max_x, k); + } + } + } + + if (max_y <= min_y || max_x <= min_x) { + av_log(s, AV_LOG_WARNING, "Unable to detect crop region\n"); + *x = 0; + *y = 0; + *w = subtitle_area->w; + *h = subtitle_area->h; + } else { + *x = FFMAX(min_x - 10, 0); + *y = FFMAX(min_y - 10, 0); + *w = FFMIN(max_x + 10 - *x, (subtitle_area->w - *x)); + *h = FFMIN(max_y + 10 - *y, (subtitle_area->h - *y)); + } + + return 0; +} + +static int crop_area_bitmap(SubOcrContext *const s, AVSubtitleArea *subtitle_area, int x, int y, int w, int h) +{ + const int linesize = subtitle_area->linesize[0]; + AVBufferRef *dst = av_buffer_allocz(h * w); + uint8_t *d; + + if (!dst) + return AVERROR(ENOMEM); + + d = dst->data; + + for (int i = y; i < y + h; i++) { + const uint8_t *p = subtitle_area->buf[0]->data + ((ptrdiff_t)linesize * i); + for (int k = x; k < x + w; k++) { + *d = p[k]; + d++; + } + } + + subtitle_area->w = w; + subtitle_area->h = h; + subtitle_area->x += x; + subtitle_area->y += y; + subtitle_area->linesize[0] = w; + av_buffer_replace(&subtitle_area->buf[0], dst); + + av_buffer_unref(&dst); + return 0; +} + +#define R 0 +#define G 1 +#define B 2 +#define A 3 + +static int print_code(AVBPrint *buf, int in_code, const char *fmt, ...) +{ + va_list vl; + + if (!in_code) + av_bprint_chars(buf, '{', 1); + + va_start(vl, fmt); + av_vbprintf(buf, fmt, vl); + va_end(vl); + + return 1; +} + +static int end_code(AVBPrint *buf, int in_code) +{ + if (in_code) + av_bprint_chars(buf, '}', 1); + return 0; +} + +static uint8_t* create_grayscale_image(AVFilterContext *ctx, AVSubtitleArea *area, int invert) +{ + uint8_t gray_pal[256]; + const size_t img_size = area->buf[0]->size; + const uint8_t* img = area->buf[0]->data; + uint8_t* gs_img = av_malloc(img_size); + + if (!gs_img) + return NULL; + + for (unsigned i = 0; i < 256; i++) { + const uint8_t *col = (uint8_t*)&area->pal[i]; + const int val = (int)col[3] * FFMAX3(col[0], col[1], col[2]); + gray_pal[i] = (uint8_t)(val >> 8); + } + + if (invert) + for (unsigned i = 0; i < img_size; i++) + gs_img[i] = 255 - gray_pal[img[i]]; + else + for (unsigned i = 0; i < img_size; i++) + gs_img[i] = gray_pal[img[i]]; + + return gs_img; +} + +static uint8_t* create_bitmap_image(AVFilterContext *ctx, AVSubtitleArea *area, const uint8_t text_color_index) +{ + const size_t img_size = area->buf[0]->size; + const uint8_t* img = area->buf[0]->data; + uint8_t* gs_img = av_malloc(img_size); + + if (!gs_img) + return NULL; + + for (unsigned i = 0; i < img_size; i++) { + if (img[i] == text_color_index) + gs_img[i] = 0; + else + gs_img[i] = 255; + } + + return gs_img; +} + +static void png_save(AVFilterContext *ctx, const char *filename, AVSubtitleArea *area) +{ + int x, y; + int v; + FILE *f; + char fname[40]; + const uint8_t *data = area->buf[0]->data; + + snprintf(fname, sizeof(fname), "%s.ppm", filename); + + f = fopen(fname, "wb"); + if (!f) { + perror(fname); + return; + } + fprintf(f, "P6\n" + "%d %d\n" + "%d\n", + area->w, area->h, 255); + for(y = 0; y < area->h; y++) { + for(x = 0; x < area->w; x++) { + const uint8_t index = data[y * area->linesize[0] + x]; + v = (int)area->pal[index]; + putc(v >> 16 & 0xff, f); + putc(v >> 8 & 0xff, f); + putc(v >> 0 & 0xff, f); + } + } + + fclose(f); +} + +static int get_max_index(int score[256]) +{ + int max_val = 0, max_index = 0; + + for (int i = 0; i < 256; i++) { + if (score[i] > max_val) { + max_val = score[i]; + max_index = i; + } + } + + return max_index; +} + +static int get_word_colors(AVFilterContext *ctx, TessResultIterator* ri, const AVSubtitleArea* area, const AVSubtitleArea* original_area, + uint8_t bg_color_index, uint8_t text_color_index, uint8_t outline_color_index, + uint32_t* bg_color, uint32_t* text_color, uint32_t* outline_color) +{ + int left = 0, top = 0, right = 0, bottom = 0, ret; + int bg_score[256] = {0}, text_score[256] = {0}, outline_score[256] = {0}; + int max_index; + + ret = TessPageIteratorBoundingBox((TessPageIterator*)ri, RIL_WORD, &left, &top, &right, &bottom); + if (ret < 0) { + av_log(ctx, AV_LOG_WARNING, "get_word_colors: IteratorBoundingBox failed: %d\n", ret); + return ret; + } + + if (left >= area->w || right >= area->w || top >= area->h || bottom >= area->h) { + av_log(ctx, AV_LOG_WARNING, "get_word_colors: word bounding box (l: %d, t: %d r: %d, b: %d) out of image bounds (%dx%d)\n", left,top, right, bottom, area->w, area->h); + return AVERROR(EINVAL); + } + + for (int y = top; y < bottom; y += 3) { + uint8_t *p = area->buf[0]->data + (y * area->linesize[0]) + left; + uint8_t *porig = original_area->buf[0]->data + (y * original_area->linesize[0]) + left; + uint8_t current_index = 255; + + for (int x = left; x < right; x++, p++, porig++) { + + if (*p == current_index) { + if (*p == bg_color_index) + bg_score[*porig]++; + if (*p == text_color_index) + text_score[*porig]++; + if (*p == outline_color_index) + outline_score[*porig]++; + } + + current_index = *p; + } + } + + max_index = get_max_index(bg_score); + if (bg_score[max_index] > 0) + *bg_color = original_area->pal[max_index]; + + max_index = get_max_index(text_score); + if (text_score[max_index] > 0) + *text_color = original_area->pal[max_index]; + + max_index = get_max_index(outline_score); + if (outline_score[max_index] > 0) + *outline_color = original_area->pal[max_index]; + + return 0; +} + +static int convert_area(AVFilterContext *ctx, AVSubtitleArea *area, const AVFrame *frame, const unsigned area_index, int *margin_v) +{ + SubOcrContext *s = ctx->priv; + char *ocr_text = NULL; + int ret = 0; + uint8_t *gs_img; + uint8_t bg_color_index; + uint8_t text_color_index = 255; + uint8_t outline_color_index = 255; + char filename[32]; + AVSubtitleArea *original_area = copy_subtitle_area(area); + + if (!original_area) + return AVERROR(ENOMEM); + + if (area->w < 6 || area->h < 6) { + area->ass = NULL; + goto exit; + } + + if (s->dump_bitmaps) { + snprintf(filename, sizeof(filename), "graphicsub2text_%"PRId64"_%d_original", frame->subtitle_timing.start_pts, area_index); + png_save(ctx, filename, area); + } + + if (s->preprocess_images) { + ret = quantize_image_colors(s, area); + if (ret < 0) + goto exit; + if (s->dump_bitmaps && original_area->nb_colors != area->nb_colors) { + snprintf(filename, sizeof(filename), "graphicsub2text_%"PRId64"_%d_quantized", frame->subtitle_timing.start_pts, area_index); + png_save(ctx, filename, area); + } + } + + bg_color_index = get_background_color_index(s, area); + + if (s->preprocess_images) { + int x, y, w, h; + + for (int i = 0; i < area->nb_colors; ++i) { + av_log(s, AV_LOG_DEBUG, "Color #%d: %0.8X\n", i, area->pal[i]); + } + + text_color_index = get_text_color_index(s, area, bg_color_index, &outline_color_index); + + get_crop_region(s, area, text_color_index, &x, &y, &w, &h); + + if ((ret = crop_area_bitmap(s, area, x, y, w, h) < 0)) + goto exit; + + if ((ret = crop_area_bitmap(s, original_area, x, y, w, h) < 0)) + goto exit; + + make_image_binary(s, area, text_color_index); + + if (s->dump_bitmaps) { + snprintf(filename, sizeof(filename), "graphicsub2text_%"PRId64"_%d_preprocessed", frame->subtitle_timing.start_pts, area_index); + png_save(ctx, filename, area); + } + + gs_img = create_bitmap_image(ctx, area, text_color_index); + } else + gs_img = create_grayscale_image(ctx, area, 1); + + if (!gs_img) { + ret = AVERROR(ENOMEM); + goto exit; + } + + area->type = AV_SUBTITLE_FMT_ASS; + TessBaseAPISetImage(s->tapi, gs_img, area->w, area->h, 1, area->linesize[0]); + + TessBaseAPISetSourceResolution(s->tapi, 72); + + ret = TessBaseAPIRecognize(s->tapi, NULL); + if (ret == 0) + ocr_text = TessBaseAPIGetUTF8Text(s->tapi); + + if (!ocr_text || !strlen(ocr_text)) { + av_log(ctx, AV_LOG_WARNING, "OCR didn't return a text. ret=%d\n", ret); + area->ass = NULL; + + goto exit; + } + + const size_t len = strlen(ocr_text); + if (len > 0 && ocr_text[len - 1] == '\n') + ocr_text[len - 1] = 0; + + av_log(ctx, AV_LOG_VERBOSE, "OCR Result: %s\n", ocr_text); + + area->ass = av_strdup(ocr_text); + TessDeleteText(ocr_text); + + // End of simple recognition + + if (s->recognize != RFLAGS_NONE) { + TessResultIterator* ri = 0; + const TessPageIteratorLevel level = RIL_WORD; + int cur_is_bold = 0, cur_is_italic = 0, cur_is_underlined = 0, cur_pointsize = 0; + uint32_t cur_text_color = 0, cur_bg_color = 0, cur_outline_color = 0; + + char *cur_font_name = NULL; + int valign = 0; // 0: bottom, 4: top, 8 middle + int halign = 2; // 1: left, 2: center, 3: right + int in_code = 0; + double font_factor = (0.000666 * (s->h - 480) + 1) * s->font_size_factor; + + av_freep(&area->ass); + av_bprint_clear(&s->buffer); + + ri = TessBaseAPIGetIterator(s->tapi); + + // Horizontal Alignment + if (s->w && s->recognize & RFLAGS_HALIGN) { + int left_margin = area->x; + int right_margin = s->w - area->x - area->w; + double relative_diff = ((double)left_margin - right_margin) / s->w; + + if (FFABS(relative_diff) < 0.1) + halign = 2; // center + else if (relative_diff > 0) + halign = 3; // right + else + halign = 1; // left + } + + // Vertical Alignment + if (s->h && frame->height && s->recognize & RFLAGS_VALIGN) { + int left = 0, top = 0, right = 0, bottom = 0; + + TessPageIteratorBoundingBox((TessPageIterator*)ri, RIL_TEXTLINE, &left, &top, &right, &bottom); + av_log(s, AV_LOG_DEBUG, "RIL_TEXTLINE - TOP: %d BOTTOM: %d HEIGHT: %d\n", top, bottom, bottom - top); + + TessPageIteratorBoundingBox((TessPageIterator*)ri, RIL_BLOCK, &left, &top, &right, &bottom); + + const int vertical_pos = area->y + area->h / 2; + if (vertical_pos < s->h / 3) { + *margin_v = area->y + top; + valign = 4; + } + else if (vertical_pos < s->h / 3 * 2) { + *margin_v = 0; + valign = 8; + } else { + *margin_v = frame->height - area->y - area->h; + valign = 0; + } + } + + if (*margin_v < 0) + *margin_v = 0; + + // Set alignment when not default (2) + if ((valign | halign) != 2) + in_code = print_code(&s->buffer, in_code, "\\a%d", valign | halign); + + do { + int is_bold, is_italic, is_underlined, is_monospace, is_serif, is_smallcaps, pointsize, font_id; + char* word; + const char *font_name = TessResultIteratorWordFontAttributes(ri, &is_bold, &is_italic, &is_underlined, &is_monospace, &is_serif, &is_smallcaps, &pointsize, &font_id); + uint32_t text_color = 0, bg_color = 0, outline_color = 0; + + if (cur_is_underlined && !is_underlined && s->recognize & RFLAGS_FUNDERLINE) + in_code = print_code(&s->buffer, in_code, "\\u0"); + + if (cur_is_bold && !is_bold && s->recognize & RFLAGS_FBOLD) + in_code = print_code(&s->buffer, in_code, "\\b0"); + + if (cur_is_italic && !is_italic && s->recognize & RFLAGS_FITALIC) + in_code = print_code(&s->buffer, in_code, "\\i0"); + + + if (TessPageIteratorIsAtBeginningOf((TessPageIterator*)ri, RIL_TEXTLINE) && !TessPageIteratorIsAtBeginningOf((TessPageIterator*)ri, RIL_BLOCK)) { + in_code = end_code(&s->buffer, in_code); + av_bprintf(&s->buffer, "\\N"); + } + + if (get_word_colors(ctx, ri, area, original_area, bg_color_index, text_color_index, outline_color_index, &bg_color, &text_color, &outline_color) == 0) { + + if (text_color > 0 && cur_text_color != text_color && s->recognize & RFLAGS_COLOR) { + const uint8_t* tval = (uint8_t*)&text_color; + const int color = (int)tval[R] << 16 | (int)tval[G] << 8 | tval[B]; + + in_code = print_code(&s->buffer, in_code, "\\1c&H%0.6X&", color); + if (tval[A] != 255) + in_code = print_code(&s->buffer, in_code, "\\1a&H%0.2X&", 255 - tval[A]); + } + + if (outline_color > 0 && cur_outline_color != outline_color && s->recognize & RFLAGS_OUTLINECOLOR) { + const uint8_t* tval = (uint8_t*)&outline_color; + const int color = (int)tval[R] << 16 | (int)tval[G] << 8 | tval[B]; + + in_code = print_code(&s->buffer, in_code, "\\3c&H%0.6X&\\bord2", color); + in_code = print_code(&s->buffer, in_code, "\\3a&H%0.2X&", FFMIN(255 - tval[A], 30)); + } + + cur_text_color = text_color; + cur_outline_color = outline_color; + } + + if (font_name && strlen(font_name) && s->recognize & RFLAGS_FONT) { + if (!cur_font_name || !strlen(cur_font_name) || strcmp(cur_font_name, font_name) != 0) { + char *sanitized_font_name = av_strireplace(font_name, "_", " "); + if (!sanitized_font_name) { + ret = AVERROR(ENOMEM); + goto exit; + } + + in_code = print_code(&s->buffer, in_code, "\\fn%s", sanitized_font_name); + av_freep(&sanitized_font_name); + + if (cur_font_name) + av_freep(&cur_font_name); + cur_font_name = av_strdup(font_name); + if (!cur_font_name) { + ret = AVERROR(ENOMEM); + goto exit; + } + } + } + + if (pointsize > 0 && pointsize != cur_pointsize && s->recognize & RFLAGS_FONTSIZE) { + float change_factor = (float)(FFABS(pointsize - cur_pointsize)) / FFMAX(pointsize, cur_pointsize); + + // Avoid small changes due to recognition variance + if (change_factor > 0.12f) { + av_log(s, AV_LOG_DEBUG, "pointsize - pointsize: %d\n", pointsize); + in_code = print_code(&s->buffer, in_code, "\\fs%d", (int)(pointsize * font_factor)); + cur_pointsize = pointsize; + } + } + + if (is_italic && !cur_is_italic && s->recognize & RFLAGS_FITALIC) + in_code = print_code(&s->buffer, in_code, "\\i1"); + + if (is_bold && !cur_is_bold && s->recognize & RFLAGS_FBOLD) + in_code = print_code(&s->buffer, in_code, "\\b1"); + + if (is_underlined && !cur_is_underlined && s->recognize & RFLAGS_FUNDERLINE) + in_code = print_code(&s->buffer, in_code, "\\u1"); + + in_code = end_code(&s->buffer, in_code); + + cur_is_underlined = is_underlined; + cur_is_bold = is_bold; + cur_is_italic = is_italic; + + if (!TessPageIteratorIsAtBeginningOf((TessPageIterator*)ri, RIL_TEXTLINE)) + av_bprint_chars(&s->buffer, ' ', 1); + + word = TessResultIteratorGetUTF8Text(ri, level); + av_bprint_append_data(&s->buffer, word, strlen(word)); + TessDeleteText(word); + + } while (TessResultIteratorNext(ri, level)); + + if (!av_bprint_is_complete(&s->buffer)) + ret = AVERROR(ENOMEM); + else { + av_log(ctx, AV_LOG_VERBOSE, "ASS Result: %s\n", s->buffer.str); + area->ass = av_strdup(s->buffer.str); + } + + TessResultIteratorDelete(ri); + av_freep(&cur_font_name); + } + +exit: + free_subtitle_area(original_area); + av_freep(&gs_img); + av_buffer_unref(&area->buf[0]); + area->type = AV_SUBTITLE_FMT_ASS; + + return ret; +} + +static int filter_frame(AVFilterLink *inlink, AVFrame *frame) +{ + AVFilterContext *ctx = inlink->dst; + SubOcrContext *s = ctx->priv; + AVFilterLink *outlink = inlink->dst->outputs[0]; + int ret, frame_sent = 0; + + if (s->pending_frame && !frame->repeat_sub) { + const int64_t pts_diff = frame->subtitle_timing.start_pts - s->pending_frame->subtitle_timing.start_pts; + + if (pts_diff == 0) { + // This is just a repetition of the previous frame, ignore it + av_frame_free(&frame); + return 0; + } + + s->pending_frame->subtitle_timing.duration = pts_diff; + + if ((ret = av_buffer_replace(&s->pending_frame->subtitle_header, s->subtitle_header)) < 0) + return ret; + + ret = ff_filter_frame(outlink, s->pending_frame); + s->pending_frame = NULL; + if (ret < 0) + return ret; + + frame_sent = 1; + s->last_subtitle_pts = frame->subtitle_timing.start_pts; + } + + if (frame->repeat_sub) { + // Ignore repeated frame + av_frame_free(&frame); + return 0; + } + + s->last_subtitle_pts = frame->subtitle_timing.start_pts; + + ret = av_frame_make_writable(frame); + + if (ret < 0) { + av_frame_free(&frame); + return ret; + } + + frame->format = AV_SUBTITLE_FMT_ASS; + + av_log(ctx, AV_LOG_VERBOSE, "filter_frame sub_pts: %"PRIu64", duration: %"PRIu64", num_areas: %d\n", + frame->subtitle_timing.start_pts, frame->subtitle_timing.duration, frame->num_subtitle_areas); + + if (frame->num_subtitle_areas > 1 && + frame->subtitle_areas[0]->y > frame->subtitle_areas[frame->num_subtitle_areas - 1]->y) { + + for (unsigned i = 0; i < frame->num_subtitle_areas / 2; i++) + FFSWAP(AVSubtitleArea*, frame->subtitle_areas[i], frame->subtitle_areas[frame->num_subtitle_areas - i - 1]); + } + + for (int i = 0; i < frame->num_subtitle_areas; i++) { + AVSubtitleArea *area = frame->subtitle_areas[i]; + int margin_v = 0; + + ret = convert_area(ctx, area, frame, i, &margin_v); + if (ret < 0) + return ret; + + if (area->ass && area->ass[0] != '\0') { + + const int layer = s->recognize ? i : 0; + char *tmp = area->ass; + area->ass = avpriv_ass_get_dialog_ex(s->readorder_counter++, layer, "Default", NULL, 0, 0, margin_v, NULL, tmp); + av_free(tmp); + } + } + + // When decoders can't determine the end time, they are setting it either to UINT32_NAX + // or 30s (dvbsub). + if (s->delay_when_no_duration && frame->subtitle_timing.duration >= ms_to_avtb(29000)) { + // Can't send it without end time, wait for the next frame to determine the end_display time + s->pending_frame = frame; + + if (frame_sent) + return 0; + + // To keep all going, send an empty frame instead + frame = ff_get_subtitles_buffer(outlink, AV_SUBTITLE_FMT_ASS); + if (!frame) + return AVERROR(ENOMEM); + + av_frame_copy_props(frame, s->pending_frame); + frame->subtitle_timing.start_pts = 0; + frame->subtitle_timing.duration = 1; + frame->repeat_sub = 1; + } + + if ((ret = av_buffer_replace(&frame->subtitle_header, s->subtitle_header)) < 0) + return ret; + + return ff_filter_frame(outlink, frame); +} + +#define OFFSET(x) offsetof(SubOcrContext, x) +#define FLAGS (AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_FILTERING_PARAM) + +static const AVOption graphicsub2text_options[] = { + { "delay_when_no_duration", "delay output when duration is unknown", OFFSET(delay_when_no_duration), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS, NULL }, + { "dump_bitmaps", "save processed bitmaps as .ppm", OFFSET(dump_bitmaps), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS, NULL }, + { "font_size_factor", "font size adjustment factor", OFFSET(font_size_factor), AV_OPT_TYPE_DOUBLE, { .dbl = 1.0 }, 0.2, 5, FLAGS, NULL }, + { "language", "ocr language", OFFSET(language), AV_OPT_TYPE_STRING, { .str = "eng" }, 0, 0, FLAGS, NULL }, + { "ocr_mode", "set ocr mode", OFFSET(ocr_mode), AV_OPT_TYPE_INT, { .i64=OEM_TESSERACT_ONLY }, OEM_TESSERACT_ONLY, 2, FLAGS, "ocr_mode" }, + { "tesseract", "classic tesseract ocr", 0, AV_OPT_TYPE_CONST, { .i64=OEM_TESSERACT_ONLY }, 0, 0, FLAGS, "ocr_mode" }, + { "lstm", "lstm (ML based)", 0, AV_OPT_TYPE_CONST, { .i64=OEM_LSTM_ONLY}, 0, 0, FLAGS, "ocr_mode" }, + { "both", "use both models combined", 0, AV_OPT_TYPE_CONST, { .i64=OEM_TESSERACT_LSTM_COMBINED }, 0, 0, FLAGS, "ocr_mode" }, + { "preprocess_images", "reduce colors, remove outlines", OFFSET(preprocess_images), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS, NULL }, + { "recognize", "detect fonts, styles and colors", OFFSET(recognize), AV_OPT_TYPE_FLAGS, { .i64 = RFLAGS_ALL}, 0, INT_MAX, FLAGS, "reco_flags" }, + { "none", "no format detection", 0, AV_OPT_TYPE_CONST, { .i64 = RFLAGS_NONE }, 0, 0, FLAGS, "reco_flags" }, + { "halign", "horizontal alignment", 0, AV_OPT_TYPE_CONST, { .i64 = RFLAGS_HALIGN }, 0, 0, FLAGS, "reco_flags" }, + { "valign", "vertical alignment", 0, AV_OPT_TYPE_CONST, { .i64 = RFLAGS_VALIGN }, 0, 0, FLAGS, "reco_flags" }, + { "bold", "font bold", 0, AV_OPT_TYPE_CONST, { .i64 = RFLAGS_FBOLD }, 0, 0, FLAGS, "reco_flags" }, + { "italic", "font italic", 0, AV_OPT_TYPE_CONST, { .i64 = RFLAGS_FITALIC }, 0, 0, FLAGS, "reco_flags" }, + { "underline", "font underline", 0, AV_OPT_TYPE_CONST, { .i64 = RFLAGS_FUNDERLINE }, 0, 0, FLAGS, "reco_flags" }, + { "font", "font name", 0, AV_OPT_TYPE_CONST, { .i64 = RFLAGS_FONT }, 0, 0, FLAGS, "reco_flags" }, + { "fontsize", "font size", 0, AV_OPT_TYPE_CONST, { .i64 = RFLAGS_FONTSIZE }, 0, 0, FLAGS, "reco_flags" }, + { "color", "font color", 0, AV_OPT_TYPE_CONST, { .i64 = RFLAGS_COLOR }, 0, 0, FLAGS, "reco_flags" }, + { "outlinecolor", "outline color", 0, AV_OPT_TYPE_CONST, { .i64 = RFLAGS_OUTLINECOLOR }, 0, 0, FLAGS, "reco_flags" }, + { "tessdata_path", "path to tesseract data", OFFSET(tessdata_path), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, FLAGS, NULL }, + { NULL }, +}; + +AVFILTER_DEFINE_CLASS(graphicsub2text); + +static const AVFilterPad inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .filter_frame = filter_frame, + .config_props = config_input, + }, +}; + +static const AVFilterPad outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .config_props = config_output, + }, +}; + +const AVFilter ff_sf_graphicsub2text = { + .name = "graphicsub2text", + .description = NULL_IF_CONFIG_SMALL("Convert graphical subtitles to text subtitles via OCR"), + .init = init, + .uninit = uninit, + .priv_size = sizeof(SubOcrContext), + .priv_class = &graphicsub2text_class, + FILTER_INPUTS(inputs), + FILTER_OUTPUTS(outputs), + FILTER_QUERY_FUNC(query_formats), +}; diff --git a/libavfilter/sf_snull.c b/libavfilter/sf_snull.c new file mode 100644 index 0000000000000..815436cfffb67 --- /dev/null +++ b/libavfilter/sf_snull.c @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2021 softworkz + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * null subtitle filter + */ + +#include "avfilter.h" +#include "internal.h" +#include "libavutil/internal.h" + +static int sconfig_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + AVFilterLink *inlink = ctx->inputs[0]; + + outlink->format = inlink->format; + + return 0; +} + +static const AVFilterPad avfilter_sf_snull_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + }, +}; + +static const AVFilterPad avfilter_sf_snull_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .config_props = sconfig_output, + }, +}; + +const AVFilter ff_sf_snull = { + .name = "snull", + .description = NULL_IF_CONFIG_SMALL("Pass the source unchanged to the output."), + .flags = AVFILTER_FLAG_METADATA_ONLY, + FILTER_INPUTS(avfilter_sf_snull_inputs), + FILTER_OUTPUTS(avfilter_sf_snull_outputs), +}; diff --git a/libavfilter/sf_splitcc.c b/libavfilter/sf_splitcc.c new file mode 100644 index 0000000000000..14235e822c9c7 --- /dev/null +++ b/libavfilter/sf_splitcc.c @@ -0,0 +1,395 @@ +/* + * Copyright (c) 2021 softworkz + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * subtitle filter for splitting out closed-caption/A53 subtitles from video frame side data + */ + +#include "filters.h" +#include "libavutil/opt.h" +#include "subtitles.h" +#include "libavcodec/avcodec.h" + +static const AVRational ms_tb = {1, 1000}; + +typedef struct SplitCaptionsContext { + const AVClass *class; + enum AVSubtitleType format; + AVCodecContext *cc_dec; + int eof; + AVFrame *next_sub_frame; + AVFrame *empty_sub_frame; + int new_frame; + int64_t next_repetition_pts; + int had_keyframe; + AVBufferRef *subtitle_header; + int use_cc_styles; + int real_time; + int real_time_latency_msec; + int data_field; + int scatter_realtime_output; +} SplitCaptionsContext; + +static int64_t ms_to_avtb(int64_t ms) +{ + return av_rescale_q(ms, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q); +} + +static int init(AVFilterContext *ctx) +{ + SplitCaptionsContext *s = ctx->priv; + AVDictionary *options = NULL; + + int ret; + const AVCodec *codec = avcodec_find_decoder(AV_CODEC_ID_EIA_608); + if (!codec) { + av_log(ctx, AV_LOG_ERROR, "failed to find EIA-608/708 decoder\n"); + return AVERROR_DECODER_NOT_FOUND; + } + + if (!((s->cc_dec = avcodec_alloc_context3(codec)))) { + av_log(ctx, AV_LOG_ERROR, "failed to allocate EIA-608/708 decoder\n"); + return AVERROR(ENOMEM); + } + + av_dict_set_int(&options, "real_time", s->real_time, 0); + av_dict_set_int(&options, "real_time_latency_msec", s->real_time_latency_msec, 0); + av_dict_set_int(&options, "data_field", s->data_field, 0); + + if ((ret = avcodec_open2(s->cc_dec, codec, &options)) < 0) { + av_log(ctx, AV_LOG_ERROR, "failed to open EIA-608/708 decoder: %i\n", ret); + return ret; + } + + if (s->use_cc_styles && s->cc_dec->subtitle_header && s->cc_dec->subtitle_header[0] != 0) { + char* subtitle_header = av_strdup((char *)s->cc_dec->subtitle_header); + if (!subtitle_header) + return AVERROR(ENOMEM); + s->subtitle_header = av_buffer_create((uint8_t *)subtitle_header, strlen(subtitle_header) + 1, NULL, NULL, 0); + if (!s->subtitle_header) { + av_free(subtitle_header); + return AVERROR(ENOMEM); + } + } + + return 0; +} + +static void uninit(AVFilterContext *ctx) +{ + SplitCaptionsContext *s = ctx->priv; + av_frame_free(&s->next_sub_frame); + av_frame_free(&s->empty_sub_frame); + av_buffer_unref(&s->subtitle_header); +} + +static int config_input(AVFilterLink *link) +{ + const SplitCaptionsContext *context = link->dst->priv; + + if (context->cc_dec) + context->cc_dec->pkt_timebase = link->time_base; + + return 0; +} + +static int query_formats(AVFilterContext *ctx) +{ + AVFilterFormats *formats; + AVFilterLink *inlink0 = ctx->inputs[0]; + AVFilterLink *outlink0 = ctx->outputs[0]; + AVFilterLink *outlink1 = ctx->outputs[1]; + static const enum AVSubtitleType subtitle_fmts[] = { AV_SUBTITLE_FMT_ASS, AV_SUBTITLE_FMT_NONE }; + int ret; + + /* set input0 video formats */ + formats = ff_all_formats(AVMEDIA_TYPE_VIDEO); + if ((ret = ff_formats_ref(formats, &inlink0->outcfg.formats)) < 0) + return ret; + + /* set output0 video formats */ + if ((ret = ff_formats_ref(formats, &outlink0->incfg.formats)) < 0) + return ret; + + /* set output1 subtitle formats */ + formats = ff_make_format_list(subtitle_fmts); + if ((ret = ff_formats_ref(formats, &outlink1->incfg.formats)) < 0) + return ret; + + return 0; +} + +static int config_video_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + const AVFilterLink *inlink = outlink->src->inputs[0]; + + outlink->w = ctx->inputs[0]->w; + outlink->h = ctx->inputs[0]->h; + outlink->frame_rate = ctx->inputs[0]->frame_rate; + outlink->time_base = ctx->inputs[0]->time_base; + outlink->sample_aspect_ratio = ctx->inputs[0]->sample_aspect_ratio; + + if (inlink->hw_frames_ctx) + outlink->hw_frames_ctx = av_buffer_ref(inlink->hw_frames_ctx); + + return 0; +} + +static int config_sub_output(AVFilterLink *outlink) +{ + SplitCaptionsContext *s = outlink->src->priv; + const AVFilterLink *inlink = outlink->src->inputs[0]; + + outlink->time_base = inlink->time_base; + outlink->format = AV_SUBTITLE_FMT_ASS; + outlink->frame_rate = (AVRational){1000, s->real_time_latency_msec}; + + return 0; +} + +static int request_sub_frame(AVFilterLink *outlink) +{ + SplitCaptionsContext *s = outlink->src->priv; + int status; + int64_t pts; + + if (!s->empty_sub_frame) { + s->empty_sub_frame = ff_get_subtitles_buffer(outlink, outlink->format); + if (!s->empty_sub_frame) + return AVERROR(ENOMEM); + } + + if (!s->eof && ff_inlink_acknowledge_status(outlink->src->inputs[0], &status, &pts)) { + if (status == AVERROR_EOF) + s->eof = 1; + } + + if (s->eof) + return AVERROR_EOF; + + if (s->next_sub_frame) { + + AVFrame *out = NULL; + s->next_sub_frame->pts++; + + if (s->new_frame) + out = av_frame_clone(s->next_sub_frame); + else if (s->empty_sub_frame) { + s->empty_sub_frame->pts = s->next_sub_frame->pts; + out = av_frame_clone(s->empty_sub_frame); + av_frame_copy_props(out, s->next_sub_frame); + out->repeat_sub = 1; + } + + if (!out) + return AVERROR(ENOMEM); + + out->subtitle_timing.start_pts = av_rescale_q(s->next_sub_frame->pts, outlink->time_base, AV_TIME_BASE_Q); + s->new_frame = 0; + + return ff_filter_frame(outlink, out); + } + + return 0; +} + +static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt) +{ + int ret; + + *got_frame = 0; + + if (pkt) { + ret = avcodec_send_packet(avctx, pkt); + // In particular, we don't expect AVERROR(EAGAIN), because we read all + // decoded frames with avcodec_receive_frame() until done. + if (ret < 0 && ret != AVERROR_EOF) + return ret; + } + + ret = avcodec_receive_frame(avctx, frame); + if (ret < 0 && ret != AVERROR(EAGAIN)) + return ret; + if (ret >= 0) + *got_frame = 1; + + return 0; +} + +static int filter_frame(AVFilterLink *inlink, AVFrame *frame) +{ + AVFrameSideData *sd; + SplitCaptionsContext *s = inlink->dst->priv; + AVFilterLink *outlink0 = inlink->dst->outputs[0]; + AVFilterLink *outlink1 = inlink->dst->outputs[1]; + AVPacket *pkt = NULL; + AVFrame *sub_out = NULL; + + int ret; + + outlink0->format = inlink->format; + + sd = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC); + + if (sd && (s->had_keyframe || frame->key_frame)) { + int got_output = 0; + + s->had_keyframe = 1; + pkt = av_packet_alloc(); + pkt->buf = av_buffer_ref(sd->buf); + if (!pkt->buf) { + ret = AVERROR(ENOMEM); + goto fail; + } + + pkt->data = pkt->buf->data; + pkt->size = pkt->buf->size; + pkt->pts = av_rescale_q(frame->pts, inlink->time_base, AV_TIME_BASE_Q); + + sub_out = ff_get_subtitles_buffer(outlink1, AV_SUBTITLE_FMT_ASS); + if (!sub_out) { + ret = AVERROR(ENOMEM); + goto fail; + } + + if ((ret = av_buffer_replace(&sub_out->subtitle_header, s->subtitle_header)) < 0) + goto fail; + + ret = decode(s->cc_dec, sub_out, &got_output, pkt); + + ////if (got_output) { + //// av_log(inlink->dst, AV_LOG_INFO, "CC Packet PTS: %"PRId64" got_output: %d out_frame_pts: %"PRId64" out_sub_pts: %"PRId64"\n", pkt->pts, got_output, sub_out->pts, sub_out->subtitle_pts); + ////} + + av_packet_free(&pkt); + + if (ret < 0) { + av_log(inlink->dst, AV_LOG_ERROR, "Decode error: %d \n", ret); + goto fail; + } + + if (got_output) { + sub_out->pts = frame->pts; + av_frame_free(&s->next_sub_frame); + s->next_sub_frame = sub_out; + sub_out = NULL; + s->new_frame = 1; + s->next_sub_frame->pts = frame->pts; + + if ((ret = av_buffer_replace(&s->next_sub_frame->subtitle_header, s->subtitle_header)) < 0) + goto fail; + + if (s->real_time && s->scatter_realtime_output) { + if (s->next_repetition_pts) + s->next_sub_frame->pts = s->next_repetition_pts; + + s->next_sub_frame->subtitle_timing.duration = ms_to_avtb(s->real_time_latency_msec); + s->next_repetition_pts = s->next_sub_frame->pts + av_rescale_q(s->real_time_latency_msec, ms_tb, inlink->time_base); + } + + ret = request_sub_frame(outlink1); + if (ret < 0) + goto fail; + } + } + + if (s->real_time && s->scatter_realtime_output && !s->new_frame && s->next_repetition_pts > 0 && frame->pts > s->next_repetition_pts) { + s->new_frame = 1; + s->next_sub_frame->pts = s->next_repetition_pts; + s->next_repetition_pts = s->next_sub_frame->pts + av_rescale_q(s->real_time_latency_msec, ms_tb, inlink->time_base); + } + + if (!s->next_sub_frame) { + s->next_sub_frame = ff_get_subtitles_buffer(outlink1, outlink1->format); + if (!s->next_sub_frame) { + ret = AVERROR(ENOMEM); + goto fail; + } + + s->next_sub_frame->subtitle_timing.duration = ms_to_avtb(s->real_time_latency_msec); + s->next_sub_frame->pts = frame->pts; + s->new_frame = 1; + + if ((ret = av_buffer_replace(&s->next_sub_frame->subtitle_header, s->subtitle_header)) < 0) + goto fail; + } + + ret = ff_filter_frame(outlink0, frame); + +fail: + av_packet_free(&pkt); + av_frame_free(&sub_out); + return ret; +} + +#define OFFSET(x) offsetof(SplitCaptionsContext, x) +#define FLAGS (AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_FILTERING_PARAM) + +static const AVOption split_cc_options[] = { + { "use_cc_styles", "Emit closed caption style header", OFFSET(use_cc_styles), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS, NULL }, + { "real_time", "emit subtitle events as they are decoded for real-time display", OFFSET(real_time), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, + { "real_time_latency_msec", "minimum elapsed time between emitting real-time subtitle events", OFFSET(real_time_latency_msec), AV_OPT_TYPE_INT, { .i64 = 200 }, 0, 500, FLAGS }, + { "scatter_realtime_output", "scatter output events to a duration of real_time_latency_msec", OFFSET(scatter_realtime_output), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, + { "data_field", "select data field", OFFSET(data_field), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, FLAGS, "data_field" }, + { "auto", "pick first one that appears", 0, AV_OPT_TYPE_CONST, { .i64 =-1 }, 0, 0, FLAGS, "data_field" }, + { "first", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, FLAGS, "data_field" }, + { "second", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, FLAGS, "data_field" }, + { NULL }, +}; + +AVFILTER_DEFINE_CLASS(split_cc); + +static const AVFilterPad inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .filter_frame = filter_frame, + .config_props = config_input, + }, +}; + +static const AVFilterPad outputs[] = { + { + .name = "video_passthrough", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_video_output, + }, + { + .name = "subtitles", + .type = AVMEDIA_TYPE_SUBTITLE, + .request_frame = request_sub_frame, + .config_props = config_sub_output, + }, +}; + +const AVFilter ff_sf_splitcc = { + .name = "splitcc", + .description = NULL_IF_CONFIG_SMALL("Extract closed-caption (A53) data from video as subtitle stream."), + .init = init, + .uninit = uninit, + .priv_size = sizeof(SplitCaptionsContext), + .priv_class = &split_cc_class, + .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE, + FILTER_INPUTS(inputs), + FILTER_OUTPUTS(outputs), + FILTER_QUERY_FUNC(query_formats), +}; diff --git a/libavfilter/sf_stripstyles.c b/libavfilter/sf_stripstyles.c new file mode 100644 index 0000000000000..78dc6f3ef4643 --- /dev/null +++ b/libavfilter/sf_stripstyles.c @@ -0,0 +1,237 @@ +/* + * Copyright (c) 2021 softworkz + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * text subtitle filter which removes inline-styles from subtitles + */ + +#include "libavutil/opt.h" +#include "internal.h" +#include "libavutil/ass_internal.h" +#include "libavutil/ass_split_internal.h" +#include "libavutil/bprint.h" + +typedef struct StripStylesContext { + const AVClass *class; + enum AVSubtitleType format; + int remove_animated; + enum ASSSplitComponents keep_flags; + int select_layer; +} StripStylesContext; + +typedef struct DialogContext { + StripStylesContext* ss_ctx; + AVBPrint buffer; + int drawing_scale; + int is_animated; + int plain_text_length; +} DialogContext; + +static void dialog_text_cb(void *priv, const char *text, int len) +{ + DialogContext *s = priv; + + av_log(s->ss_ctx, AV_LOG_DEBUG, "dialog_text_cb: %s\n", text); + + if (!s->drawing_scale && (!s->is_animated || !s->ss_ctx->remove_animated)) + s->plain_text_length += len; + ////av_bprint_append_data(&s->buffer, text, len); +} + +static void dialog_new_line_cb(void *priv, int forced) +{ + DialogContext *s = priv; + if (!s->drawing_scale && !s->is_animated) + s->plain_text_length += 2; + ////av_bprint_append_data(&s->buffer, forced ? "\\N" : "\\n", 2); +} + +static void dialog_drawing_mode_cb(void *priv, int scale) +{ + DialogContext *s = priv; + s->drawing_scale = scale; +} + +static void dialog_animate_cb(void *priv, int t1, int t2, int accel, char *style) +{ + DialogContext *s = priv; + s->is_animated = 1; +} + +static void dialog_move_cb(void *priv, int x1, int y1, int x2, int y2, int t1, int t2) +{ + DialogContext *s = priv; + if (t1 >= 0 || t2 >= 0) + s->is_animated = 1; +} + +static const ASSCodesCallbacks dialog_callbacks = { + .text = dialog_text_cb, + .new_line = dialog_new_line_cb, + .drawing_mode = dialog_drawing_mode_cb, + .animate = dialog_animate_cb, + .move = dialog_move_cb, +}; + +static char *process_dialog(StripStylesContext *s, const char *ass_line) +{ + DialogContext dlg_ctx = { .ss_ctx = s }; + ASSDialog *dialog = avpriv_ass_split_dialog(NULL, ass_line); + char *result = NULL; + + if (!dialog) + return NULL; + + if (s->select_layer >= 0 && dialog->layer != s->select_layer) { + avpriv_ass_free_dialog(&dialog); + return NULL; + } + + dlg_ctx.ss_ctx = s; + + av_bprint_init(&dlg_ctx.buffer, 512, AV_BPRINT_SIZE_UNLIMITED); + + avpriv_ass_filter_override_codes(&dialog_callbacks, &dlg_ctx, dialog->text, &dlg_ctx.buffer, s->keep_flags); + + if (av_bprint_is_complete(&dlg_ctx.buffer) && dlg_ctx.buffer.len > 0 && dlg_ctx.plain_text_length > 0) + result = avpriv_ass_get_dialog_ex(dialog->readorder, dialog->layer, dialog->style, dialog->name, dialog->margin_l, dialog->margin_r, dialog->margin_v, dialog->effect, dlg_ctx.buffer.str); + + av_bprint_finalize(&dlg_ctx.buffer, NULL); + avpriv_ass_free_dialog(&dialog); + + return result; +} + +static int config_output(AVFilterLink *outlink) +{ + AVFilterLink *inlink = outlink->src->inputs[0]; + + outlink->w = inlink->w; + outlink->h = inlink->h; + outlink->time_base = inlink->time_base; + outlink->frame_rate = inlink->frame_rate; + + return 0; +} + +static int filter_frame(AVFilterLink *inlink, AVFrame *frame) +{ + StripStylesContext *s = inlink->dst->priv; + AVFilterLink *outlink = inlink->dst->outputs[0]; + int ret; + + outlink->format = inlink->format; + + ret = av_frame_make_writable(frame); + if (ret <0 ) { + av_frame_free(&frame); + return AVERROR(ENOMEM); + } + + for (unsigned i = 0; i < frame->num_subtitle_areas; i++) { + + AVSubtitleArea *area = frame->subtitle_areas[i]; + + if (area->ass) { + char *tmp = area->ass; + area->ass = process_dialog(s, area->ass); + + if (area->ass) { + av_log(inlink->dst, AV_LOG_DEBUG, "original: %d %s\n", i, tmp); + av_log(inlink->dst, AV_LOG_DEBUG, "stripped: %d %s\n", i, area->ass); + } + else + area->ass = NULL; + + av_free(tmp); + } + } + + return ff_filter_frame(outlink, frame); +} + +#define OFFSET(x) offsetof(StripStylesContext, x) +#define FLAGS (AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_FILTERING_PARAM) + +static const AVOption stripstyles_options[] = { + { "keep_flags", "flags to control which override codes to keep", OFFSET(keep_flags), AV_OPT_TYPE_FLAGS, { .i64 = ASS_SPLIT_TEXT }, .flags = FLAGS, .unit = "keepflags" }, + { "basic", "keep static style tags only", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_BASIC }, .flags=FLAGS, .unit = "keepflags" }, + { "all_known", "keep all known tags", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_ALL_KNOWN }, .flags=FLAGS, .unit = "keepflags" }, + { "text", "keep text content", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_TEXT }, .flags=FLAGS, .unit = "keepflags" }, + { "color", "keep color tags (\\c, \\c)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_COLOR }, .flags=FLAGS, .unit = "keepflags" }, + { "alpha", "keep color alpha tags (\\alpha, \\a)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_ALPHA }, .flags=FLAGS, .unit = "keepflags" }, + { "font_name", "keep font name tags (\\fn)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_FONT_NAME }, .flags=FLAGS, .unit = "keepflags" }, + { "font_size", "keep font size tags (\\fs)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_FONT_SIZE }, .flags=FLAGS, .unit = "keepflags" }, + { "font_scale", "keep font scale tags (\\fscx, \\fscy)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_FONT_SCALE }, .flags=FLAGS, .unit = "keepflags" }, + { "font_spacing", "keep font spacing tags (\\fsp)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_FONT_SPACING }, .flags=FLAGS, .unit = "keepflags" }, + { "font_charset", "keep font charset tags (\\fe)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_FONT_CHARSET }, .flags=FLAGS, .unit = "keepflags" }, + { "font_bold", "keep font bold tags (\\b)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_FONT_BOLD }, .flags=FLAGS, .unit = "keepflags" }, + { "font_italic", "keep font italic tags (\\i)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_FONT_ITALIC }, .flags=FLAGS, .unit = "keepflags" }, + { "font_underline", "keep font underline tags (\\u)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_FONT_UNDERLINE }, .flags=FLAGS, .unit = "keepflags" }, + { "font_strikeout", "keep font strikeout tags (\\s)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_FONT_STRIKEOUT }, .flags=FLAGS, .unit = "keepflags" }, + { "text_border", "keep text border tags (\\bord)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_TEXT_BORDER }, .flags=FLAGS, .unit = "keepflags" }, + { "text_shadow", "keep text shadow tags (\\shad)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_TEXT_SHADOW }, .flags=FLAGS, .unit = "keepflags" }, + { "text_rotate", "keep text rotate tags (\\fr)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_TEXT_ROTATE }, .flags=FLAGS, .unit = "keepflags" }, + { "text_blur", "keep text blur tags (\\blur, \\be)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_TEXT_BLUR }, .flags=FLAGS, .unit = "keepflags" }, + { "text_wrap", "keep text wrap tags (\\q)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_TEXT_WRAP }, .flags=FLAGS, .unit = "keepflags" }, + { "text_align", "keep text align tags (\\a, \\an)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_TEXT_ALIGNMENT }, .flags=FLAGS, .unit = "keepflags" }, + { "reset_override", "keep override reset tags (\\r)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_CANCELLING }, .flags=FLAGS, .unit = "keepflags" }, + { "move", "keep move tags (\\move)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_MOVE }, .flags=FLAGS, .unit = "keepflags" }, + { "pos", "keep position tags (\\pos)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_POS }, .flags=FLAGS, .unit = "keepflags" }, + { "origin", "keep origin tags (\\org)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_ORIGIN }, .flags=FLAGS, .unit = "keepflags" }, + { "draw", "keep drawing tags (\\p)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_DRAW }, .flags=FLAGS, .unit = "keepflags" }, + { "animate", "keep animation tags (\\t)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_ANIMATE }, .flags=FLAGS, .unit = "keepflags" }, + { "fade", "keep fade tags (\\fad, \\fade)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_FADE }, .flags=FLAGS, .unit = "keepflags" }, + { "clip", "keep clip tags (\\clip)", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_CLIP }, .flags=FLAGS, .unit = "keepflags" }, + { "unknown", "keep unknown tags", .type = AV_OPT_TYPE_CONST, { .i64 = ASS_SPLIT_UNKNOWN }, .flags=FLAGS, .unit = "keepflags" }, + { "remove_animated", "remove animated text (default: yes)", OFFSET(remove_animated), AV_OPT_TYPE_BOOL, {.i64 = 1 }, 0, 1, FLAGS, 0 }, + { "select_layer", "process a specific ass layer only", OFFSET(select_layer), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, FLAGS, 0 }, + { NULL }, +}; + +AVFILTER_DEFINE_CLASS(stripstyles); + +static const AVFilterPad inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .filter_frame = filter_frame, + }, +}; + +static const AVFilterPad outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .config_props = config_output, + }, +}; + +const AVFilter ff_sf_stripstyles = { + .name = "stripstyles", + .description = NULL_IF_CONFIG_SMALL("Strip subtitle inline styles"), + .priv_size = sizeof(StripStylesContext), + .priv_class = &stripstyles_class, + FILTER_INPUTS(inputs), + FILTER_OUTPUTS(outputs), + FILTER_SINGLE_SUBFMT(AV_SUBTITLE_FMT_ASS), +}; + diff --git a/libavfilter/sf_subfeed.c b/libavfilter/sf_subfeed.c new file mode 100644 index 0000000000000..3227861ac06b5 --- /dev/null +++ b/libavfilter/sf_subfeed.c @@ -0,0 +1,412 @@ +/* + * Copyright (c) 2021 softworkz + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * subtitle filter for feeding subtitle frames into a filtergraph in a contiguous way + * + * + * also supports + * - duration fixup + * delaying a subtitle event with unknown duration and infer duration from the + * start time of the subsequent subtitle + * - scattering + * splitting a subtitle event with unknown duration into multiple ones with + * a short and fixed duration + * + */ + +#include "filters.h" +#include "libavutil/opt.h" +#include "subtitles.h" +#include "libavutil/avassert.h" + +enum SubFeedMode { + FM_REPEAT, + FM_SCATTER, + FM_FORWARD, +}; + +typedef struct SubFeedContext { + const AVClass *class; + enum AVSubtitleType format; + enum SubFeedMode mode; + + AVRational frame_rate; + int fix_durations; + int fix_overlap; + + int current_frame_isnew; + int eof; + int got_first_input; + int need_frame; + int64_t next_pts_offset; + int64_t recent_subtitle_pts; + + int64_t counter; + + /** + * Queue of frames waiting to be filtered. + */ + FFFrameQueue fifo; + +} SubFeedContext; + +static int64_t ms_to_avtb(int64_t ms) +{ + return av_rescale_q(ms, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q); +} + +static int64_t avtb_to_ms(int64_t avtb) +{ + return av_rescale_q(avtb, AV_TIME_BASE_Q, (AVRational){ 1, 1000 }); +} + +static int init(AVFilterContext *ctx) +{ + SubFeedContext *s = ctx->priv; + + ff_framequeue_init(&s->fifo, NULL); + + return 0; +} + +static void uninit(AVFilterContext *ctx) +{ + SubFeedContext *s = ctx->priv; + ff_framequeue_free(&s->fifo); +} + +static int config_input(AVFilterLink *link) +{ + ////const subfeedContext *context = link->dst->priv; + + return 0; +} + +static int query_formats(AVFilterContext *ctx) +{ + AVFilterFormats *formats; + AVFilterLink *inlink0 = ctx->inputs[0]; + AVFilterLink *outlink0 = ctx->outputs[0]; + static const enum AVSubtitleType subtitle_fmts[] = { AV_SUBTITLE_FMT_BITMAP, AV_SUBTITLE_FMT_ASS, AV_SUBTITLE_FMT_NB }; + int ret; + + formats = ff_make_format_list(subtitle_fmts); + + if ((ret = ff_formats_ref(formats, &inlink0->outcfg.formats)) < 0) + return ret; + + if ((ret = ff_formats_ref(formats, &outlink0->incfg.formats)) < 0) + return ret; + + return 0; +} + +static int config_output(AVFilterLink *outlink) +{ + SubFeedContext *s = outlink->src->priv; + const AVFilterLink *inlink = outlink->src->inputs[0]; + + outlink->time_base = AV_TIME_BASE_Q; + outlink->format = inlink->format; + outlink->w = inlink->w; + outlink->h = inlink->h; + + if (s->mode == FM_FORWARD) + outlink->frame_rate = (AVRational) { 1, 0 }; + else + outlink->frame_rate = s->frame_rate; + + return 0; +} + +static int request_frame(AVFilterLink *outlink) +{ + SubFeedContext *s = outlink->src->priv; + AVFilterLink *inlink = outlink->src->inputs[0]; + int64_t last_pts = outlink->current_pts; + int64_t next_pts; + int64_t interval = ms_to_avtb((int64_t)(av_q2d(av_inv_q(outlink->frame_rate)) * 1000)); + AVFrame *out; + int status; + + if (s->mode == FM_FORWARD) + return ff_request_frame(inlink); + + s->counter++; + if (interval == 0) + interval = ms_to_avtb(200); + + status = ff_outlink_get_status(inlink); + if (status == AVERROR_EOF) + s->eof = 1; + + if (s->eof) + return AVERROR_EOF; + + if (!s->got_first_input && inlink->current_pts != AV_NOPTS_VALUE) { + + s->got_first_input = 1; + next_pts = av_rescale_q(inlink->current_pts, inlink->time_base, AV_TIME_BASE_Q); + if (next_pts < last_pts) + next_pts = last_pts + interval; + + } else if (last_pts == AV_NOPTS_VALUE) + next_pts = av_rescale_q(inlink->current_pts, inlink->time_base, AV_TIME_BASE_Q); + else + next_pts = last_pts + interval; + + if (next_pts == AV_NOPTS_VALUE) + next_pts = 0; + + if (s->next_pts_offset) { + av_log(outlink->src, AV_LOG_VERBOSE, "Subtracting next_pts_offset: %"PRId64" \n", s->next_pts_offset); + next_pts -= s->next_pts_offset; + s->next_pts_offset = 0; + } + +retry: + if (ff_framequeue_queued_frames(&s->fifo) && !s->current_frame_isnew) { + + const AVFrame *current_frame = ff_framequeue_peek(&s->fifo, 0); + const int64_t sub_end_time = current_frame->subtitle_timing.start_pts + current_frame->subtitle_timing.duration; + + if (ff_framequeue_queued_frames(&s->fifo) > 1) { + const AVFrame *next_frame = ff_framequeue_peek(&s->fifo, 1); + if (next_pts + interval > next_frame->subtitle_timing.start_pts) { + AVFrame *remove_frame = ff_framequeue_take(&s->fifo); + av_frame_free(&remove_frame); + s->current_frame_isnew = 1; + goto retry; + } + } + + if (next_pts > sub_end_time) { + AVFrame *remove_frame = ff_framequeue_take(&s->fifo); + av_frame_free(&remove_frame); + s->current_frame_isnew = 1; + goto retry; + } + } + + if (ff_framequeue_queued_frames(&s->fifo)) { + AVFrame *current_frame = ff_framequeue_peek(&s->fifo, 0); + + if (current_frame && current_frame->subtitle_timing.start_pts <= next_pts + interval) { + if (!s->current_frame_isnew) + current_frame->repeat_sub++; + + out = av_frame_clone(current_frame); + + if (!out) + return AVERROR(ENOMEM); + + if (!s->current_frame_isnew) { + out->pts = next_pts; + } else { + out->pts = out->subtitle_timing.start_pts; + + if (out->pts < next_pts) + out->pts = next_pts; + + s->next_pts_offset = (out->pts - next_pts) % interval; + } + + if (s->mode == FM_SCATTER) { + const int64_t sub_end_time = current_frame->subtitle_timing.start_pts + current_frame->subtitle_timing.duration; + + if (s->current_frame_isnew == 1 && current_frame->subtitle_timing.start_pts < out->pts) { + const int64_t diff = out->pts - current_frame->subtitle_timing.start_pts; + current_frame->subtitle_timing.duration -= diff; + } + + out->repeat_sub = 0; + out->subtitle_timing.start_pts = out->pts; + out->subtitle_timing.duration = interval; + av_assert1(out->pts >= next_pts); + av_assert1(out->pts < next_pts + interval); + av_assert1(out->pts < sub_end_time); + + if (out->pts > next_pts) + out->subtitle_timing.duration -= out->pts - next_pts; + + if (sub_end_time < next_pts + interval) { + const int64_t diff = next_pts + interval - sub_end_time; + av_assert1(diff <= out->subtitle_timing.duration); + out->subtitle_timing.duration -= diff; + } + } + + s->current_frame_isnew = 0; + s->recent_subtitle_pts = out->subtitle_timing.start_pts; + + av_log(outlink->src, AV_LOG_DEBUG, "Output1 frame pts: %"PRId64" subtitle_pts: %"PRId64" repeat_frame: %d\n", + out->pts, out->subtitle_timing.start_pts, out->repeat_sub); + + return ff_filter_frame(outlink, out); + } + } + + if (ff_framequeue_queued_frames(&s->fifo) == 0) { + status = ff_request_frame(inlink); + if (status == AVERROR_EOF) { + s->eof = 1; + return status; + } + + if (s->counter > 1 && s->counter % 2) + return 0; + } + + out = ff_get_subtitles_buffer(outlink, outlink->format); + out->pts = next_pts; + out->repeat_sub = 1; + out->subtitle_timing.start_pts = s->recent_subtitle_pts; + + av_log(outlink->src, AV_LOG_DEBUG, "Output2 frame pts: %"PRId64" subtitle_pts: %"PRId64" repeat_frame: %d\n", + out->pts, out->subtitle_timing.start_pts, out->repeat_sub); + + return ff_filter_frame(outlink, out); +} + +static int filter_frame(AVFilterLink *inlink, AVFrame *frame) +{ + AVFilterContext *ctx = inlink->dst; + SubFeedContext *s = inlink->dst->priv; + AVFilterLink *outlink = inlink->dst->outputs[0]; + const int64_t index = (int64_t)ff_framequeue_queued_frames(&s->fifo) - 1; + size_t nb_queued_frames; + int ret = 0; + + av_log(ctx, AV_LOG_VERBOSE, "frame.pts: %"PRId64" (AVTB: %"PRId64") - subtitle_timing.start_pts: %"PRId64" subtitle_timing.duration: %"PRId64" - format: %d\n", + frame->pts, av_rescale_q(frame->pts, inlink->time_base, AV_TIME_BASE_Q), frame->subtitle_timing.start_pts, frame->subtitle_timing.duration, frame->format); + + frame->pts = av_rescale_q(frame->pts, inlink->time_base, AV_TIME_BASE_Q); + + if (index < 0) { + s->current_frame_isnew = 1; + } else if (s->fix_durations || s->fix_overlap) { + AVFrame *previous_frame = ff_framequeue_peek(&s->fifo, index); + const int64_t pts_diff = frame->subtitle_timing.start_pts - previous_frame->subtitle_timing.start_pts; + nb_queued_frames = ff_framequeue_queued_frames(&s->fifo); + + if (s->fix_durations && pts_diff > 0 && previous_frame->subtitle_timing.duration > ms_to_avtb(29000)) { + av_log(ctx, AV_LOG_VERBOSE, "Previous frame (index #%"PRId64") has a duration of %"PRId64" ms, setting to %"PRId64" ms\n", + index, avtb_to_ms(previous_frame->subtitle_timing.duration), avtb_to_ms(frame->subtitle_timing.start_pts - previous_frame->subtitle_timing.start_pts)); + previous_frame->subtitle_timing.duration = frame->subtitle_timing.start_pts - previous_frame->subtitle_timing.start_pts; + } + + if (s->fix_overlap && pts_diff > 0 && previous_frame->subtitle_timing.duration > pts_diff) { + av_log(ctx, AV_LOG_VERBOSE, "Detected overlap from previous frame (index #%"PRId64") which had a duration of %"PRId64" ms, setting to the pts_diff which is %"PRId64" ms\n", + index, avtb_to_ms(previous_frame->subtitle_timing.duration), avtb_to_ms(pts_diff)); + previous_frame->subtitle_timing.duration = pts_diff; + } + + if (pts_diff <= 0) { + av_log(ctx, AV_LOG_WARNING, "The pts_diff to the previous frame (index #%"PRId64") is <= 0: %"PRId64" ms. The previous frame duration is %"PRId64" ms.\n", + index, avtb_to_ms(pts_diff), avtb_to_ms(previous_frame->subtitle_timing.duration)); + + if (s->fix_overlap) { + av_log(ctx, AV_LOG_VERBOSE, "Removing previous frame\n"); + previous_frame = ff_framequeue_take(&s->fifo); + while (nb_queued_frames > 1) { + ff_framequeue_add(&s->fifo, previous_frame); + previous_frame = ff_framequeue_take(&s->fifo); + nb_queued_frames--; + } + } + } + } + + ff_framequeue_add(&s->fifo, frame); + + nb_queued_frames = ff_framequeue_queued_frames(&s->fifo); + + if (nb_queued_frames > 3) + av_log(ctx, AV_LOG_WARNING, "frame queue count: %zu\n", nb_queued_frames); + + if (s->mode == FM_FORWARD && nb_queued_frames) { + + AVFrame *first_frame = ff_framequeue_peek(&s->fifo, 0); + + if (s->fix_overlap && nb_queued_frames < 2) { + av_log(ctx, AV_LOG_VERBOSE, "Return no frame since we have less than 2\n"); + return 0; + } + + if (s->fix_durations && first_frame->subtitle_timing.duration > ms_to_avtb(29000)) { + av_log(ctx, AV_LOG_VERBOSE, "Return no frame because first frame duration is %"PRId64" ms\n", avtb_to_ms(first_frame->subtitle_timing.duration)); + return 0; + } + + first_frame = ff_framequeue_take(&s->fifo); + return ff_filter_frame(outlink, first_frame); + } + + return ret; +} + +#define OFFSET(x) offsetof(SubFeedContext, x) +#define FLAGS (AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_FILTERING_PARAM) + +static const AVOption subfeed_options[] = { + { "fix_durations", "delay output and determine duration from next frame", OFFSET(fix_durations), AV_OPT_TYPE_BOOL, { .i64=1 }, 0, 1, FLAGS, NULL }, + { "fix_overlap", "delay output and adjust durations to prevent overlap", OFFSET(fix_overlap), AV_OPT_TYPE_BOOL, { .i64=0 }, 0, 1, FLAGS, NULL }, + { "mode", "set feed mode", OFFSET(mode), AV_OPT_TYPE_INT, { .i64=FM_REPEAT }, FM_REPEAT, FM_FORWARD, FLAGS, "mode" }, + { "repeat", "repeat recent while valid, send empty otherwise", 0, AV_OPT_TYPE_CONST, { .i64=FM_REPEAT }, 0, 0, FLAGS, "mode" }, + { "scatter", "subdivide subtitles into 1/framerate segments", 0, AV_OPT_TYPE_CONST, { .i64=FM_SCATTER }, 0, 0, FLAGS, "mode" }, + { "forward", "forward only (clears output framerate)", 0, AV_OPT_TYPE_CONST, { .i64=FM_FORWARD }, 0, 0, FLAGS, "mode" }, + { "rate", "output frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, { .str = "5"}, 0, INT_MAX, FLAGS, NULL },\ + { "r", "output frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, { .str = "5"}, 0, INT_MAX, FLAGS, NULL },\ + { NULL }, +}; + +AVFILTER_DEFINE_CLASS(subfeed); + +static const AVFilterPad inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .filter_frame = filter_frame, + .config_props = config_input, + }, +}; + +static const AVFilterPad outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .request_frame = request_frame, + .config_props = config_output, + }, +}; + +const AVFilter ff_sf_subfeed = { + .name = "subfeed", + .description = NULL_IF_CONFIG_SMALL("Control subtitle frame timing and flow in a filtergraph"), + .init = init, + .uninit = uninit, + .priv_size = sizeof(SubFeedContext), + .priv_class = &subfeed_class, + FILTER_INPUTS(inputs), + FILTER_OUTPUTS(outputs), + FILTER_QUERY_FUNC(query_formats), +}; diff --git a/libavfilter/sf_subscale.c b/libavfilter/sf_subscale.c new file mode 100644 index 0000000000000..04f0f16c274f0 --- /dev/null +++ b/libavfilter/sf_subscale.c @@ -0,0 +1,884 @@ +/* + * Copyright (c) 2021 softworkz + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * scale graphical subtitles filter + */ + +#include + +#include "drawutils.h" +#include "internal.h" +#include "scale_eval.h" +#include "libavutil/eval.h" +#include "libavutil/opt.h" +#include "libswscale/swscale.h" + +#include "libavcodec/elbg.h" + +static const char *const var_names[] = { + "in_w", "iw", + "in_h", "ih", + "out_w", "ow", + "out_h", "oh", + "a", + "sar", + "dar", + "margin_h", + "margin_v", + NULL +}; + +enum var_name { + VAR_IN_W, VAR_IW, + VAR_IN_H, VAR_IH, + VAR_OUT_W, VAR_OW, + VAR_OUT_H, VAR_OH, + VAR_A, + VAR_SAR, + VAR_DAR, + VARS_B_H, + VARS_B_V, + VARS_NB +}; + +enum EvalMode { + EVAL_MODE_INIT, + EVAL_MODE_FRAME, + EVAL_MODE_NB +}; + +enum SubScaleMode { + SSM_NONE, + SSM_UNIFORM, + SSM_UNIFORM_NO_REPOSITION, +}; + +enum SubArrangeMode { + SAM_NONE, + SAM_ENSUREMARGIN_NO_SCALE, + SAM_ENSUREMARGIN_AND_SCALE, + SAM_SNAPALIGNMENT_NO_SCALE, + SAM_SNAPALIGNMENT_AND_SCALE, +}; + +typedef struct SubScaleContext { + const AVClass *class; + struct SwsContext *sws; + AVDictionary *opts; + + int w, h; + + char *w_expr; ///< width expression string + char *h_expr; ///< height expression string + AVExpr *w_pexpr; + AVExpr *h_pexpr; + double var_values[VARS_NB]; + + int force_original_aspect_ratio; + int eval_mode; ///< expression evaluation mode + + int use_caching; + + // Scale Options + enum SubScaleMode scale_mode; + + // Arrange Options + enum SubArrangeMode arrange_mode_h; + enum SubArrangeMode arrange_mode_v; + int margin_h; + int margin_v; + char *margin_h_expr; + char *margin_v_expr; + AVExpr *margin_h_pexpr; + AVExpr *margin_v_pexpr; + + // Bitmap Options + int num_output_colors; + int bitmap_width_align; + int bitmap_height_align; + + // Color Quantization Fields + struct ELBGContext *ctx; + AVLFG lfg; + int *codeword; + int *codeword_closest_codebook_idxs; + int *codebook; + int r_idx, g_idx, b_idx, a_idx; + AVFrame *cache_frame; +} SubScaleContext; + + +static int config_output(AVFilterLink *outlink); + +static int check_exprs(AVFilterContext *ctx) +{ + const SubScaleContext *s = ctx->priv; + unsigned vars_w[VARS_NB] = { 0 }, vars_h[VARS_NB] = { 0 }; + + if (!s->w_pexpr && !s->h_pexpr) + return AVERROR(EINVAL); + + if (s->w_pexpr) + av_expr_count_vars(s->w_pexpr, vars_w, VARS_NB); + if (s->h_pexpr) + av_expr_count_vars(s->h_pexpr, vars_h, VARS_NB); + + if (vars_w[VAR_OUT_W] || vars_w[VAR_OW]) { + av_log(ctx, AV_LOG_ERROR, "Width expression cannot be self-referencing: '%s'.\n", s->w_expr); + return AVERROR(EINVAL); + } + + if (vars_h[VAR_OUT_H] || vars_h[VAR_OH]) { + av_log(ctx, AV_LOG_ERROR, "Height expression cannot be self-referencing: '%s'.\n", s->h_expr); + return AVERROR(EINVAL); + } + + if ((vars_w[VAR_OUT_H] || vars_w[VAR_OH]) && + (vars_h[VAR_OUT_W] || vars_h[VAR_OW])) { + av_log(ctx, AV_LOG_WARNING, "Circular references detected for width '%s' and height '%s' - possibly invalid.\n", s->w_expr, s->h_expr); + } + + if (s->margin_h_pexpr) + av_expr_count_vars(s->margin_h_pexpr, vars_w, VARS_NB); + if (s->margin_v_pexpr) + av_expr_count_vars(s->margin_v_pexpr, vars_h, VARS_NB); + + return 0; +} + +static int scale_parse_expr(AVFilterContext *ctx, char *str_expr, AVExpr **pexpr_ptr, const char *var, const char *args) +{ + SubScaleContext *s = ctx->priv; + int ret, is_inited = 0; + char *old_str_expr = NULL; + AVExpr *old_pexpr = NULL; + + if (str_expr) { + old_str_expr = av_strdup(str_expr); + if (!old_str_expr) + return AVERROR(ENOMEM); + av_opt_set(s, var, args, 0); + } + + if (*pexpr_ptr) { + old_pexpr = *pexpr_ptr; + *pexpr_ptr = NULL; + is_inited = 1; + } + + ret = av_expr_parse(pexpr_ptr, args, var_names, + NULL, NULL, NULL, NULL, 0, ctx); + if (ret < 0) { + av_log(ctx, AV_LOG_ERROR, "Cannot parse expression for %s: '%s'\n", var, args); + goto revert; + } + + ret = check_exprs(ctx); + if (ret < 0) + goto revert; + + if (is_inited && (ret = config_output(ctx->outputs[0])) < 0) + goto revert; + + av_expr_free(old_pexpr); + av_freep(&old_str_expr); + + return 0; + +revert: + av_expr_free(*pexpr_ptr); + *pexpr_ptr = NULL; + if (old_str_expr) { + av_opt_set(s, var, old_str_expr, 0); + av_free(old_str_expr); + } + if (old_pexpr) + *pexpr_ptr = old_pexpr; + + return ret; +} + +static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts) +{ + SubScaleContext *s = ctx->priv; + uint8_t rgba_map[4]; + int ret; + + if (!s->w_expr) + av_opt_set(s, "w", "iw", 0); + if (!s->h_expr) + av_opt_set(s, "h", "ih", 0); + + ret = scale_parse_expr(ctx, NULL, &s->w_pexpr, "width", s->w_expr); + if (ret < 0) + return ret; + + ret = scale_parse_expr(ctx, NULL, &s->h_pexpr, "height", s->h_expr); + if (ret < 0) + return ret; + + av_log(ctx, AV_LOG_VERBOSE, "w:%s h:%s\n", + s->w_expr, s->h_expr); + + if (!s->margin_h_expr) + av_opt_set(s, "margin_h", "0", 0); + if (!s->margin_v_expr) + av_opt_set(s, "margin_v", "0", 0); + + ret = scale_parse_expr(ctx, NULL, &s->margin_h_pexpr, "margin_h", s->margin_h_expr); + if (ret < 0) + return ret; + + ret = scale_parse_expr(ctx, NULL, &s->margin_v_pexpr, "margin_v", s->margin_v_expr); + if (ret < 0) + return ret; + + s->opts = *opts; + *opts = NULL; + + ff_fill_rgba_map(&rgba_map[0], AV_PIX_FMT_RGB32); + + s->r_idx = rgba_map[0]; // R + s->g_idx = rgba_map[1]; // G + s->b_idx = rgba_map[2]; // B + s->a_idx = rgba_map[3]; // A + + av_lfg_init(&s->lfg, 123456789); + + + return 0; +} + +static av_cold void uninit(AVFilterContext *ctx) +{ + SubScaleContext *s = ctx->priv; + + av_frame_free(&s->cache_frame); + + av_expr_free(s->w_pexpr); + av_expr_free(s->h_pexpr); + s->w_pexpr = s->h_pexpr = NULL; + + av_expr_free(s->margin_h_pexpr); + av_expr_free(s->margin_v_pexpr); + s->margin_h_pexpr = s->margin_v_pexpr = NULL; + + sws_freeContext(s->sws); + s->sws = NULL; + av_dict_free(&s->opts); + + avpriv_elbg_free(&s->ctx); + + av_freep(&s->codebook); + av_freep(&s->codeword); + av_freep(&s->codeword_closest_codebook_idxs); +} + +static int config_input(AVFilterLink *inlink) +{ + ////const AVFilterContext *ctx = inlink->dst; + ////SubScaleContext *s = ctx->priv; + + ////if (s->w <= 0 || s->h <= 0) { + //// s->w = inlink->w; + //// s->h = inlink->h; + ////} + return 0; +} + +static int scale_eval_dimensions(AVFilterContext *ctx) +{ + SubScaleContext *s = ctx->priv; + const AVFilterLink *inlink = ctx->inputs[0]; + char *expr; + int eval_w, eval_h, margin_h, margin_v; + int ret; + double res; + + s->var_values[VAR_IN_W] = s->var_values[VAR_IW] = inlink->w; + s->var_values[VAR_IN_H] = s->var_values[VAR_IH] = inlink->h; + s->var_values[VAR_OUT_W] = s->var_values[VAR_OW] = NAN; + s->var_values[VAR_OUT_H] = s->var_values[VAR_OH] = NAN; + s->var_values[VARS_B_H] = s->var_values[VARS_B_V] = 0; + s->var_values[VAR_A] = (double) inlink->w / inlink->h; + s->var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ? + (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1; + s->var_values[VAR_DAR] = s->var_values[VAR_A] * s->var_values[VAR_SAR]; + + res = av_expr_eval(s->w_pexpr, s->var_values, NULL); + s->var_values[VAR_OUT_W] = s->var_values[VAR_OW] = (int) res == 0 ? inlink->w : (int) res; + + res = av_expr_eval(s->h_pexpr, s->var_values, NULL); + if (isnan(res)) { + expr = s->h_expr; + ret = AVERROR(EINVAL); + goto fail; + } + eval_h = s->var_values[VAR_OUT_H] = s->var_values[VAR_OH] = (int) res == 0 ? inlink->h : (int) res; + + res = av_expr_eval(s->w_pexpr, s->var_values, NULL); + if (isnan(res)) { + expr = s->w_expr; + ret = AVERROR(EINVAL); + goto fail; + } + eval_w = s->var_values[VAR_OUT_W] = s->var_values[VAR_OW] = (int) res == 0 ? inlink->w : (int) res; + + s->w = eval_w; + s->h = eval_h; + + res = av_expr_eval(s->margin_h_pexpr, s->var_values, NULL); + s->var_values[VARS_B_H] = (int)res; + + res = av_expr_eval(s->margin_v_pexpr, s->var_values, NULL); + if (isnan(res)) { + expr = s->margin_v_expr; + ret = AVERROR(EINVAL); + goto fail; + } + margin_v = s->var_values[VARS_B_V] = (int)res; + + res = av_expr_eval(s->margin_h_pexpr, s->var_values, NULL); + if (isnan(res)) { + expr = s->margin_h_expr; + ret = AVERROR(EINVAL); + goto fail; + } + margin_h = s->var_values[VARS_B_H] = (int)res; + + s->margin_h = margin_h; + s->margin_v = margin_v; + + return 0; + +fail: + av_log(ctx, AV_LOG_ERROR, + "Error when evaluating the expression '%s'.\n", expr); + return ret; +} + +static int config_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + AVFilterLink *inlink = outlink->src->inputs[0]; + SubScaleContext *s = ctx->priv; + int ret; + + outlink->format = AV_SUBTITLE_FMT_BITMAP; + outlink->time_base = ctx->inputs[0]->time_base; + outlink->frame_rate = ctx->inputs[0]->frame_rate; + + if ((ret = scale_eval_dimensions(ctx)) < 0) + goto fail; + + ff_scale_adjust_dimensions(inlink, &s->w, &s->h, + s->force_original_aspect_ratio, 2); + + if (s->w > INT_MAX || + s->h > INT_MAX || + (s->h * inlink->w) > INT_MAX || + (s->w * inlink->h) > INT_MAX) + av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n"); + + outlink->w = s->w; + outlink->h = s->h; + + if (s->sws) + sws_freeContext(s->sws); + + s->sws = sws_alloc_context(); + if (!s->sws) + return AVERROR(ENOMEM); + + av_opt_set_pixel_fmt(s->sws, "src_format", AV_PIX_FMT_PAL8, 0); + av_opt_set_int(s->sws, "dst_format", AV_PIX_FMT_RGB32, 0); + av_opt_set_int(s->sws, "threads", ff_filter_get_nb_threads(ctx), 0); + + if (s->opts) { + const AVDictionaryEntry *e = NULL; + while ((e = av_dict_get(s->opts, "", e, AV_DICT_IGNORE_SUFFIX))) { + if ((ret = av_opt_set(s->sws, e->key, e->value, 0)) < 0) + return ret; + } + } + + if ((ret = sws_init_context(s->sws, NULL, NULL)) < 0) + return ret; + + if (inlink->sample_aspect_ratio.num){ + outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h * inlink->w, outlink->w * inlink->h}, inlink->sample_aspect_ratio); + } else + outlink->sample_aspect_ratio = inlink->sample_aspect_ratio; + + av_log(ctx, AV_LOG_VERBOSE, "Output size set to %dx%d.\n", outlink->w, outlink->h); + + return 0; +fail: + return ret; +} + +static int palettize_image(SubScaleContext *const s, const int w, const int h, const int src_linesize, uint8_t *src_data, + int dst_linesize, uint8_t *dst_data, uint32_t *dst_pal) +{ + int k, ret; + const int codeword_length = w * h; + + /* Re-Initialize */ + s->codeword = av_realloc_f(s->codeword, codeword_length, 4 * sizeof(*s->codeword)); + if (!s->codeword) + return AVERROR(ENOMEM); + + s->codeword_closest_codebook_idxs = + av_realloc_f(s->codeword_closest_codebook_idxs, codeword_length, + sizeof(*s->codeword_closest_codebook_idxs)); + if (!s->codeword_closest_codebook_idxs) + return AVERROR(ENOMEM); + + s->codebook = av_realloc_f(s->codebook, s->num_output_colors, 4 * sizeof(*s->codebook)); + if (!s->codebook) + return AVERROR(ENOMEM); + + /* build the codeword */ + k = 0; + for (int i = 0; i < h; i++) { + uint8_t *p = src_data; + for (int j = 0; j < w; j++) { + s->codeword[k++] = p[s->b_idx]; + s->codeword[k++] = p[s->g_idx]; + s->codeword[k++] = p[s->r_idx]; + s->codeword[k++] = p[s->a_idx]; + p += 4; + } + src_data += src_linesize; + } + + /* compute the codebook */ + ret = avpriv_elbg_do(&s->ctx, s->codeword, 4, + codeword_length, s->codebook, + s->num_output_colors, 1, + s->codeword_closest_codebook_idxs, &s->lfg, 0); + + if (ret < 0) + return ret; + + /* Write Palette */ + for (int i = 0; i < s->num_output_colors; i++) { + dst_pal[i] = s->codebook[i*4+3] << 24 | + (s->codebook[i*4+2] << 16) | + (s->codebook[i*4+1] << 8) | + s->codebook[i*4 ]; + } + + /* Write Image */ + k = 0; + for (int i = 0; i < h; i++) { + uint8_t *p = dst_data; + for (int j = 0; j < w; j++, p++) { + p[0] = s->codeword_closest_codebook_idxs[k++]; + } + + dst_data += dst_linesize; + } + + return ret; +} + +static int rescale_size(int64_t a, AVRational factor) +{ + const int64_t res = av_rescale_rnd(a, factor.num, factor.den, AV_ROUND_NEAR_INF); + if (res > INT32_MAX || res < 0) + return 0; + + return (int)res; +} + + +static int scale_area(AVFilterLink *link, AVSubtitleArea *area, const int target_width, const int target_height) +{ + const AVFilterContext *ctx = link->dst; + SubScaleContext *s = ctx->priv; + int ret; + + AVBufferRef *dst_buffer; + const uint8_t* data[2] = { area->buf[0]->data, (uint8_t *)&area->pal }; + const int dstW = FFALIGN(target_width, s->bitmap_width_align); + const int dstH = FFALIGN(target_height, s->bitmap_height_align); + const int tmp_linesize[2] = { FFALIGN(dstW * 4, 32), 0 }; + const int dst_linesize[2] = { dstW, 0 }; + uint8_t* tmp[2] = { 0, 0 }; + + AVBufferRef *tmp_buffer = av_buffer_allocz(tmp_linesize[0] * dstH); + if (!tmp_buffer) + return AVERROR(ENOMEM); + + if (!s->sws) + return 0; + + tmp[0] = tmp_buffer->data; + + s->sws = sws_getCachedContext(s->sws, area->w, area->h, AV_PIX_FMT_PAL8, + dstW, dstH, AV_PIX_FMT_RGB32, SWS_BICUBIC, NULL, NULL, NULL); + if (!s->sws) { + av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context. dstW=%d dstH=%d\n", dstW, dstH); + return AVERROR(EINVAL); + } + + // Rescale to ARGB + ret = sws_scale(s->sws, data, area->linesize, 0, area->h, tmp, tmp_linesize); + if (ret < 0) { + av_buffer_unref(&tmp_buffer); + return ret; + } + + // Alloc output buffer + dst_buffer = av_buffer_allocz(dst_linesize[0] * dstH); + if (!dst_buffer) { + av_buffer_unref(&tmp_buffer); + return AVERROR(ENOMEM); + } + + // Quantize to palettized image + ret = palettize_image(s, dstW, dstH, tmp_linesize[0], tmp[0], dst_linesize[0], dst_buffer->data, area->pal); + av_buffer_unref(&tmp_buffer); + + if (ret < 0) { + av_buffer_unref(&dst_buffer); + return ret; + } + + av_buffer_unref(&area->buf[0]); + ret = av_buffer_replace(&area->buf[0], dst_buffer); + if (ret < 0) { + av_buffer_unref(&dst_buffer); + return ret; + } + + area->w = dstW; + area->h = dstH; + area->linesize[0] = dst_linesize[0]; + area->nb_colors = s->num_output_colors; + + return ret; +} + +static int process_area(AVFilterLink *inlink, AVSubtitleArea *area, AVRational x_factor, AVRational y_factor) +{ + AVFilterContext *ctx = inlink->dst; + const SubScaleContext *s = ctx->priv; + int target_w, target_h, target_x, target_y; + const int border_l = s->margin_h; + const int border_r = s->w - s->margin_h; + const int border_t = s->margin_v; + const int border_b = s->h - s->margin_v; + + av_log(ctx, AV_LOG_DEBUG, "process_area - start: x/y: (%d:%d) size: %dx%d scale_mode: %d x-factor: %d:%d y-factor: %d:%d\n", + area->x, area->y, area->w, area->h, s->scale_mode, x_factor.num, x_factor.den, y_factor.num, y_factor.den); + + switch (s->scale_mode) { + case SSM_NONE: + target_w = area->w; + target_h = area->h; + target_x = area->x; + target_y = area->y; + break; + case SSM_UNIFORM: + target_w = rescale_size(area->w, x_factor); + target_h = rescale_size(area->h, y_factor); + target_x = rescale_size(area->x, x_factor); + target_y = rescale_size(area->y, y_factor); + break; + case SSM_UNIFORM_NO_REPOSITION: + target_w = rescale_size(area->w, x_factor); + target_h = rescale_size(area->h, y_factor); + target_x = area->x; + target_y = area->y; + break; + default: + av_log(ctx, AV_LOG_ERROR, "Invalid scale_mode: %d\n", s->scale_mode); + return AVERROR(EINVAL); + } + + av_log(ctx, AV_LOG_DEBUG, "process_area - scaled: x/y: (%d:%d) size: %dx%d.\n", target_x, target_y, target_w, target_h); + + + switch (s->arrange_mode_h) { + case SAM_ENSUREMARGIN_AND_SCALE: + case SAM_SNAPALIGNMENT_AND_SCALE: + { + // IF it doesn't fit - scale it + int max_width = s->w - 2 * s->margin_h; + + if (max_width < 2) + max_width = 2; + + if (target_w > max_width) { + target_h = (int)av_rescale(target_h, max_width, target_w); + target_w = max_width; + target_x = s->margin_h; + } + } + break; + } + + switch (s->arrange_mode_h) { + case SAM_NONE: + break; + case SAM_ENSUREMARGIN_NO_SCALE: + case SAM_ENSUREMARGIN_AND_SCALE: + // Left border + if (target_x < border_l) + target_x = border_l; + + // Right border + if (target_x + target_w > border_r) + target_x = border_r - target_w; + + break; + case SAM_SNAPALIGNMENT_NO_SCALE: + case SAM_SNAPALIGNMENT_AND_SCALE: + { + // Use original values to detect alignment + const int left_margin = area->x; + const int right_margin = inlink->w - area->x - area->w; + const AVRational diff_factor_r = { left_margin - right_margin, area->w }; + const float diff_factor = (float)av_q2d(diff_factor_r); + + if (diff_factor > 0.2f) { + // Right aligned + target_x = border_r - target_w; + } else if (diff_factor < -0.2f) { + // Left aligned + target_x = border_l; + } else { + // Centered + target_x = (inlink->w - area->w) / 2; + } + } + + break; + default: + av_log(ctx, AV_LOG_ERROR, "Invalid arrange_mode_h: %d\n", s->arrange_mode_h); + return AVERROR(EINVAL); + } + + av_log(ctx, AV_LOG_DEBUG, "process_area - arr_h: x/y: (%d:%d) size: %dx%d.\n", target_x, target_y, target_w, target_h); + + + switch (s->arrange_mode_v) { + case SAM_ENSUREMARGIN_AND_SCALE: + case SAM_SNAPALIGNMENT_AND_SCALE: + { + // IF it doesn't fit - scale it + int max_height = s->h - 2 * s->margin_v; + + if (max_height < 2) + max_height = 2; + + if (target_h > max_height) { + target_w = (int)av_rescale(target_w, max_height, target_h); + target_h = max_height; + target_y = s->margin_v; + } + } + break; + } + + switch (s->arrange_mode_v) { + case SAM_NONE: + break; + case SAM_ENSUREMARGIN_NO_SCALE: + case SAM_ENSUREMARGIN_AND_SCALE: + // Top border + if (target_y < border_t) + target_y = border_t; + + // Bottom border + if (target_y + target_h > border_b) + target_y = border_b - target_h; + + break; + case SAM_SNAPALIGNMENT_NO_SCALE: + case SAM_SNAPALIGNMENT_AND_SCALE: + { + // Use original values to detect alignment + const int top_margin = area->y; + const int bottom_margin = inlink->h - area->y - area->h; + const AVRational diff_factor_r = { top_margin - bottom_margin, area->h }; + const float diff_factor = (float)av_q2d(diff_factor_r); + + if (diff_factor > 0.2f) { + // Bottom aligned + target_y = border_b - target_h; + } else if (diff_factor < -0.2f) { + // Top aligned + target_y = border_t; + } else { + // Centered + target_y = (inlink->h - area->h) / 2; + } + } + + break; + default: + av_log(ctx, AV_LOG_ERROR, "Invalid arrange_mode_v: %d\n", s->arrange_mode_v); + return AVERROR(EINVAL); + } + + av_log(ctx, AV_LOG_VERBOSE, "process_area - arr_v: x/y: (%d:%d) size: %dx%d.\n", target_x, target_y, target_w, target_h); + + area->x = target_x; + area->y = target_y; + + if (area->w != target_w || area->h != target_h) + return scale_area(inlink, area, target_w, target_h); + + return 0; +} + +static int filter_frame(AVFilterLink *inlink, AVFrame *frame) +{ + const AVFilterContext *ctx = inlink->dst; + SubScaleContext *s = ctx->priv; + AVFilterLink *outlink = ctx->outputs[0]; + int ret; + + // just forward empty frames + if (frame->num_subtitle_areas == 0) { + av_frame_free(&s->cache_frame); + return ff_filter_frame(outlink, frame); + } + + if (s->use_caching && s->cache_frame && frame->repeat_sub + && s->cache_frame->subtitle_timing.start_pts == frame->subtitle_timing.start_pts) { + AVFrame *out = av_frame_clone(s->cache_frame); + if (!out) + return AVERROR(ENOMEM); + + ret = av_frame_copy_props(out, frame); + if (ret < 0) + return ret; + + av_log(inlink->dst, AV_LOG_DEBUG, "subscale CACHED - size %dx%d pts: %"PRId64" areas: %d\n", frame->width, frame->height, frame->subtitle_timing.start_pts, frame->num_subtitle_areas); + av_frame_free(&frame); + return ff_filter_frame(outlink, out); + } + + ret = av_frame_make_writable(frame); + if (ret >= 0) { + const AVRational x_factor = { .num = outlink->w, .den = inlink->w} ; + const AVRational y_factor = { .num = outlink->h, .den = inlink->h} ; + + for (unsigned i = 0; i < frame->num_subtitle_areas; ++i) { + AVSubtitleArea *area = frame->subtitle_areas[i]; + + ret = process_area(inlink, area, x_factor, y_factor); + if (ret < 0) + return ret; + } + + av_log(inlink->dst, AV_LOG_DEBUG, "subscale output - size %dx%d pts: %"PRId64" areas: %d\n", frame->width, frame->height, frame->subtitle_timing.start_pts, frame->num_subtitle_areas); + + if (s->use_caching) { + av_frame_free(&s->cache_frame); + s->cache_frame = av_frame_clone(frame); + } + + return ff_filter_frame(outlink, frame); + } + + return ret; +} + +#define OFFSET(x) offsetof(SubScaleContext, x) +#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM) + +static const AVOption subscale_options[] = { + { "margin_h", "horizontal border", OFFSET(margin_h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS }, + { "margin_v", "vertical border", OFFSET(margin_v_expr), AV_OPT_TYPE_STRING, .flags = FLAGS }, + { "w", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = FLAGS }, + { "width", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = FLAGS }, + { "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS }, + { "height","Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS }, + { "force_original_aspect_ratio", "decrease or increase w/h if necessary to keep the original AR", OFFSET(force_original_aspect_ratio), AV_OPT_TYPE_INT, { .i64 = 0}, 0, 2, FLAGS, "force_oar" }, + { "disable", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 0, FLAGS, "force_oar" }, + { "decrease", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 0, FLAGS, "force_oar" }, + { "increase", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 0, FLAGS, "force_oar" }, + { "scale_mode", "specify how to scale subtitles", OFFSET(scale_mode), AV_OPT_TYPE_INT, {.i64 = SSM_UNIFORM}, 0, SSM_UNIFORM_NO_REPOSITION, FLAGS, "scale_mode" }, + { "none", "no common scaling", 0, AV_OPT_TYPE_CONST, {.i64=SSM_NONE}, .flags = FLAGS, .unit = "scale_mode" }, + { "uniform", "uniformly scale and reposition", 0, AV_OPT_TYPE_CONST, {.i64=SSM_UNIFORM}, .flags = FLAGS, .unit = "scale_mode" }, + { "uniform_no_reposition", "uniformly scale but keep positions", 0, AV_OPT_TYPE_CONST, {.i64=SSM_UNIFORM_NO_REPOSITION}, .flags = FLAGS, .unit = "scale_mode" }, + { "use_caching", "Cache output frames", OFFSET(use_caching), AV_OPT_TYPE_BOOL, { .i64 = 1}, 0, 1, .flags = FLAGS }, + + { "arrange_h", "specify how to arrange subtitles horizontally", OFFSET(arrange_mode_h), AV_OPT_TYPE_INT, {.i64 = SAM_NONE}, 0, SAM_SNAPALIGNMENT_AND_SCALE, FLAGS, "arrange" }, + { "arrange_v", "specify how to arrange subtitles vertically", OFFSET(arrange_mode_v), AV_OPT_TYPE_INT, {.i64 = SAM_NONE}, 0, SAM_SNAPALIGNMENT_AND_SCALE, FLAGS, "arrange" }, + { "none", "no repositioning", 0, AV_OPT_TYPE_CONST, {.i64=SAM_NONE}, .flags = FLAGS, .unit = "arrange" }, + { "margin_no_scale", "move subs inside border when possible", 0, AV_OPT_TYPE_CONST, {.i64=SAM_ENSUREMARGIN_NO_SCALE,}, .flags = FLAGS, .unit = "arrange" }, + { "margin_and_scale", "move subs inside border and scale as needed", 0, AV_OPT_TYPE_CONST, {.i64=SAM_ENSUREMARGIN_AND_SCALE,}, .flags = FLAGS, .unit = "arrange" }, + { "snapalign_no_scale", "snap subs to near/far/center when possible", 0, AV_OPT_TYPE_CONST, {.i64=SAM_SNAPALIGNMENT_NO_SCALE,}, .flags = FLAGS, .unit = "arrange" }, + { "snapalign_and_scale", "snap subs to near/far/center and scale as needed", 0, AV_OPT_TYPE_CONST, {.i64=SAM_SNAPALIGNMENT_AND_SCALE,}, .flags = FLAGS, .unit = "arrange" }, + + { "eval", "specify when to evaluate expressions", OFFSET(eval_mode), AV_OPT_TYPE_INT, {.i64 = EVAL_MODE_INIT}, 0, EVAL_MODE_NB-1, FLAGS, "eval" }, + { "init", "eval expressions once during initialization", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_INIT}, .flags = FLAGS, .unit = "eval" }, + { "frame", "eval expressions during initialization and per-frame", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_FRAME}, .flags = FLAGS, .unit = "eval" }, + { "num_colors", "number of palette colors in output", OFFSET(num_output_colors), AV_OPT_TYPE_INT, {.i64 = 256 }, 2, 256, .flags = FLAGS }, + { "bitmap_width_align", "Bitmap width alignment", OFFSET(bitmap_width_align), AV_OPT_TYPE_INT, {.i64 = 2 }, 1, 256, .flags = FLAGS }, + { "bitmap_height_align", "Bitmap height alignment", OFFSET(bitmap_height_align), AV_OPT_TYPE_INT, {.i64 = 2 }, 1, 256, .flags = FLAGS }, + { .name = NULL } +}; + +static const AVClass subscale_class = { + .class_name = "subscale", + .item_name = av_default_item_name, + .option = subscale_options, + .version = LIBAVUTIL_VERSION_INT, + .category = AV_CLASS_CATEGORY_FILTER, +}; + +static const AVFilterPad inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .filter_frame = filter_frame, + .config_props = config_input, + }, +}; + +static const AVFilterPad outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .config_props = config_output, + }, +}; + +const AVFilter ff_sf_subscale = { + .name = "subscale", + .description = NULL_IF_CONFIG_SMALL("Scale graphical subtitles."), + .init_dict = init_dict, + .uninit = uninit, + .priv_size = sizeof(SubScaleContext), + .priv_class = &subscale_class, + FILTER_INPUTS(inputs), + FILTER_OUTPUTS(outputs), + FILTER_SINGLE_SUBFMT(AV_SUBTITLE_FMT_BITMAP), +}; + diff --git a/libavfilter/sf_text2graphicsub.c b/libavfilter/sf_text2graphicsub.c new file mode 100644 index 0000000000000..1fd7a76c53424 --- /dev/null +++ b/libavfilter/sf_text2graphicsub.c @@ -0,0 +1,634 @@ +/* + * Copyright (c) 2021 tcoza + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * convert text subtitles to bitmap subtitles filter + */ + +#include +#include "libavutil/avstring.h" + +#include "internal.h" +#include "avfilter.h" +#include "drawutils.h" +#include "libavutil/opt.h" +#include "libavutil/buffer.h" +#include "libavutil/internal.h" +#include "libavformat/avformat.h" +#include "libavcodec/elbg.h" +#include "libavutil/ass_split_internal.h" +#include "libavutil/ass_internal.h" +#include "libavutil/lfg.h" + +typedef struct PalettizeContext { + int *codeword, *codebook; + int *codeword_closest_codebook_idxs; + int r_idx, g_idx, b_idx, a_idx; + struct ELBGContext *elbg; + AVLFG lfg; +} PalettizeContext; + +typedef struct Text2GraphicSubContext { + const AVClass *class; + ASS_Library *library; + ASS_Renderer *renderer; + ASS_Track *track; + PalettizeContext *palettize_context; + FFDrawContext draw_context; + struct { int width; int height; } size; + int num_colors, stripstyles; + char *filename, *fontsdir, *force_style; + int got_header; +} Text2GraphicSubContext; + +typedef struct DialogContext { + int is_animated; + int has_text; +} DialogContext; + +static void dialog_text_cb(void *priv, const char *text, int len) +{ + DialogContext *s = priv; + if (!s->is_animated ) + s->has_text = 1; +} + +static void dialog_drawing_mode_cb(void *priv, int scale) +{ + DialogContext *s = priv; + s->is_animated = 1; +} + +static void dialog_animate_cb(void *priv, int t1, int t2, int accel, char *style) +{ + DialogContext *s = priv; + s->is_animated = 1; +} + +static void dialog_move_cb(void *priv, int x1, int y1, int x2, int y2, int t1, int t2) +{ + DialogContext *s = priv; + if (t1 >= 0 || t2 >= 0) + s->is_animated = 1; +} + +static const ASSCodesCallbacks dialog_callbacks = { + .text = dialog_text_cb, + .drawing_mode = dialog_drawing_mode_cb, + .animate = dialog_animate_cb, + .move = dialog_move_cb, +}; + +static char *process_dialog(const char *ass_line) +{ + DialogContext dlg_ctx = { 0 }; + ASSDialog *dialog = avpriv_ass_split_dialog(NULL, ass_line); + AVBPrint buffer; + char *result = NULL; + + if (!dialog) + return NULL; + + av_bprint_init(&buffer, 512, AV_BPRINT_SIZE_UNLIMITED); + + avpriv_ass_filter_override_codes(&dialog_callbacks, &dlg_ctx, dialog->text, &buffer, ASS_SPLIT_BASIC); + + if (av_bprint_is_complete(&buffer) && buffer.len > 0 && dlg_ctx.has_text > 0) + result = avpriv_ass_get_dialog_ex(dialog->readorder, dialog->layer, dialog->style, dialog->name, dialog->margin_l, dialog->margin_r, dialog->margin_v, dialog->effect, buffer.str); + + av_bprint_finalize(&buffer, NULL); + avpriv_ass_free_dialog(&dialog); + + return result; +} + +static void palettize_image(PalettizeContext *const s, + const int w, const int h, + uint8_t *src_data, const int src_linesize, + uint8_t *dst_data, const int dst_linesize, + uint32_t *dst_pal, const int num_colors) +{ + const int codeword_length = w * h; + + /* Re-Initialize */ + s->codeword = av_realloc_f(s->codeword, codeword_length, 4 * sizeof(*s->codeword)); + s->codeword_closest_codebook_idxs = av_realloc_f( + s->codeword_closest_codebook_idxs, codeword_length, + sizeof(*s->codeword_closest_codebook_idxs)); + s->codebook = av_realloc_f(s->codebook, num_colors, 4 * sizeof(*s->codebook)); + + /* build the codeword */ + for (int k = 0, i = 0; i < h; i++) + for (int j = 0; j < w; j++) { + s->codeword[k++] = src_data[i * src_linesize + j * 4 + s->b_idx]; + s->codeword[k++] = src_data[i * src_linesize + j * 4 + s->g_idx]; + s->codeword[k++] = src_data[i * src_linesize + j * 4 + s->r_idx]; + s->codeword[k++] = src_data[i * src_linesize + j * 4 + s->a_idx]; + } + + /* compute the codebook */ + avpriv_elbg_do(&s->elbg, s->codeword, 4, + codeword_length, s->codebook, num_colors, 1, + s->codeword_closest_codebook_idxs, &s->lfg, 0); + + /* Write Palette */ + for (int i = 0; i < num_colors; i++) + dst_pal[i] = (s->codebook[i*4+3] << 24) | + (s->codebook[i*4+2] << 16) | + (s->codebook[i*4+1] << 8) | + (s->codebook[i*4+0] << 0); + + /* Write Image */ + for (int k = 0, i = 0; i < h; i++) + for (int j = 0; j < w; j++) + dst_data[i * dst_linesize + j] = + s->codeword_closest_codebook_idxs[k++]; +} + +static void init_palettizecontext(PalettizeContext **palettizecontext) +{ + uint8_t rgba_map[4]; + PalettizeContext *context = (PalettizeContext *)av_malloc(sizeof(PalettizeContext)); + context->codebook = NULL; + context->codeword = NULL; + context->codeword_closest_codebook_idxs = NULL; + context->elbg = NULL; + av_lfg_init(&context->lfg, 0xACBADF); + ff_fill_rgba_map(&rgba_map[0], AV_PIX_FMT_RGB32); + context->r_idx = rgba_map[0]; // R + context->g_idx = rgba_map[1]; // G + context->b_idx = rgba_map[2]; // B + context->a_idx = rgba_map[3]; // A + *palettizecontext = context; +} + +static void free_palettizecontext(PalettizeContext **palettizecontext) +{ + PalettizeContext *context = *palettizecontext; + if (context) { + av_freep(&context->codebook); + av_freep(&context->codeword); + av_freep(&context->codeword_closest_codebook_idxs); + avpriv_elbg_free(&context->elbg); + av_free(context); + *palettizecontext = NULL; + } +} + +/* libass supports a log level ranging from 0 to 7 */ +static const int ass_libavfilter_log_level_map[] = { + [0] = AV_LOG_FATAL, /* MSGL_FATAL */ + [1] = AV_LOG_ERROR, /* MSGL_ERR */ + [2] = AV_LOG_WARNING, /* MSGL_WARN */ + [3] = AV_LOG_WARNING, /* */ + [4] = AV_LOG_INFO, /* MSGL_INFO */ + [5] = AV_LOG_INFO, /* */ + [6] = AV_LOG_VERBOSE, /* MSGL_V */ + [7] = AV_LOG_DEBUG, /* MSGL_DBG2 */ +}; + +static void ass_log(int ass_level, const char *fmt, va_list args, void *ctx) +{ + const int ass_level_clip = av_clip(ass_level, 0, + FF_ARRAY_ELEMS(ass_libavfilter_log_level_map) - 1); + const int level = ass_libavfilter_log_level_map[ass_level_clip]; + av_vlog(ctx, level, fmt, args); + av_log(ctx, level, "\n"); +} + +static const char * const font_mimetypes[] = { + "font/ttf", + "font/otf", + "font/sfnt", + "font/woff", + "font/woff2", + "application/font-sfnt", + "application/font-woff", + "application/x-truetype-font", + "application/vnd.ms-opentype", + "application/x-font-ttf", + NULL +}; + +static int stream_is_font(AVStream* st) +{ + const AVDictionaryEntry *tag = NULL; + + if (st->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT) + return 0; + + tag = av_dict_get(st->metadata, "mimetype", NULL, AV_DICT_MATCH_CASE); + if (!tag) return 0; + for (int i = 0; font_mimetypes[i]; i++) + if (av_strcasecmp(font_mimetypes[i], tag->value) == 0) + return 1; + return 0; +} + +#define AR(c) (((c)>>24)&0xFF) +#define AG(c) (((c)>>16)&0xFF) +#define AB(c) (((c)>> 8)&0xFF) +#define AA(c) ((0xFF-(c))&0xFF) + +static void set_area_bounds(ASS_Image *image, AVSubtitleArea *area) +{ + int x_min = INT_MAX, y_min = INT_MAX; + int x_max = 0, y_max = 0; + int stride_max = 0; + + for (ASS_Image *img = image; img != NULL; img = img->next) + { + x_min = FFMIN(x_min, img->dst_x); + y_min = FFMIN(y_min, img->dst_y); + x_max = FFMAX(x_max, img->dst_x + img->w); + y_max = FFMAX(y_max, img->dst_y + img->h); + stride_max = FFMAX(stride_max, img->dst_x + img->stride); + } + + area->x = x_min; + area->y = y_min; + area->w = FFALIGN(x_max - x_min, 2); + area->h = FFALIGN(y_max - y_min, 2); + area->linesize[0] = area->w; //stride_max - x_min; +} + +static void ass_image_to_area_palletization(Text2GraphicSubContext *context, ASS_Image *image, AVSubtitleArea *area) +{ + size_t image_rgba_size; + uint8_t *image_rgba; + + set_area_bounds(image, area); + av_log(context, AV_LOG_VERBOSE, "set_area_bounds %d,%d %dx%d\n", area->x, area->y, area->w, area->h); + + // Create rgba image + image_rgba_size = (area->linesize[0] * area->h) * 4 * sizeof(uint8_t); + image_rgba = (uint8_t *)av_mallocz(image_rgba_size); + for (; image != NULL; image = image->next) + { + uint8_t rgba_color[] = {AR(image->color), AG(image->color), AB(image->color), AA(image->color)}; + int linesize = area->linesize[0] * 4; + FFDrawColor color; + ff_draw_color(&context->draw_context, &color, rgba_color); + ff_blend_mask(&context->draw_context, &color, + &image_rgba, &linesize, area->w, area->h, + image->bitmap, image->stride, image->w, image->h, + 3, 0, image->dst_x - area->x, image->dst_y - area->y); + } + + area->nb_colors = context->num_colors; + area->buf[0] = av_buffer_alloc(image_rgba_size / 4); + + palettize_image(context->palettize_context, + area->w, area->h, + image_rgba, area->linesize[0] * 4, + area->buf[0]->data, area->linesize[0], + &area->pal[0], context->num_colors); + + // Clean up + av_free(image_rgba); +} + +static void process_header(const AVFilterContext *link, const AVFrame *frame) +{ + Text2GraphicSubContext *s = link->priv; + ASS_Track *track = s->track; + ASS_Style *style; + int sid = 0; + + if (!track) + return; + + if (frame && frame->subtitle_header) { + char *subtitle_header = (char *)frame->subtitle_header->data; + ass_process_codec_private(s->track, subtitle_header, strlen(subtitle_header)); + } + else { + char* subtitle_header = avpriv_ass_get_subtitle_header_default(0); + if (!subtitle_header) + return; + + ass_process_codec_private(s->track, subtitle_header, strlen(subtitle_header)); + av_free(subtitle_header); + } + + if (!s->track->event_format) { + s->track->event_format = av_strdup("ReadOrder, Layer, Style, Name, MarginL, MarginR, MarginV, Effect, Text"); + } + + if (s->track->n_styles == 0) { + sid = ass_alloc_style(track); + style = &s->track->styles[sid]; + style->Name = av_strdup("Default"); + style->PrimaryColour = 0xffffff00; + style->SecondaryColour = 0x00ffff00; + style->OutlineColour = 0x00000000; + style->BackColour = 0x00000080; + style->Bold = 200; + style->ScaleX = 1.0; + style->ScaleY = 1.0; + style->Spacing = 0; + style->BorderStyle = 1; + style->Outline = 2; + style->Shadow = 3; + style->Alignment = 2; + track->default_style = sid; + } + + s->got_header = 1; +} + +// Main interface functions + +static av_cold int init(AVFilterContext *ctx) +{ + Text2GraphicSubContext *context = ctx->priv; + + context->library = ass_library_init(); + ass_set_message_cb(context->library, ass_log, context); + ass_set_fonts_dir(context->library, context->fontsdir); + ass_set_extract_fonts(context->library, 1); + + if (context->filename) { + AVFormatContext *video = NULL; + int ret = avformat_open_input(&video, context->filename, NULL, NULL); + if (ret < 0) { + av_log(ctx, AV_LOG_ERROR, "Unable to open %s\n", context->filename); + return ret; + } + for (int i = 0; i < video->nb_streams; i++) { + const AVDictionaryEntry *tag; + AVStream *st = video->streams[i]; + if (!stream_is_font(st)) continue; + tag = av_dict_get(st->metadata, "filename", NULL, AV_DICT_MATCH_CASE); + if (!tag) continue; + av_log(NULL, AV_LOG_DEBUG, "Loading attached font: %s\n", tag->value); + ass_add_font(context->library, tag->value, + (char *)st->codecpar->extradata, + st->codecpar->extradata_size); + } + avformat_close_input(&video); + } + + context->renderer = ass_renderer_init(context->library); + ass_set_pixel_aspect(context->renderer, 1); + ass_set_shaper(context->renderer, 0); + ass_set_fonts(context->renderer, NULL, NULL, 1, NULL, 1); + + context->track = ass_new_track(context->library); + if (!context->track) { + av_log(ctx, AV_LOG_ERROR, "ass_new_track() failed!\n"); + return AVERROR(EINVAL); + } + + ass_set_check_readorder(context->track, 0); + + if (context->force_style) { + char **list = NULL; + char *temp = NULL; + char *ptr = av_strtok(context->force_style, ",", &temp); + int i = 0; + while (ptr) { + av_dynarray_add(&list, &i, ptr); + if (!list) { + return AVERROR(ENOMEM); + } + ptr = av_strtok(NULL, ",", &temp); + } + av_dynarray_add(&list, &i, NULL); + if (!list) { + return AVERROR(ENOMEM); + } + ass_set_style_overrides(context->library, list); + av_free(list); + } + + init_palettizecontext(&context->palettize_context); + + ff_draw_init(&context->draw_context, AV_PIX_FMT_BGRA, FF_DRAW_PROCESS_ALPHA); + + return 0; +} + +static int config_input(AVFilterLink *inlink) +{ + const AVFilterContext *ctx = inlink->dst; + Text2GraphicSubContext *context = ctx->priv; + if (!context->size.width) context->size.width = inlink->w; + if (!context->size.height) context->size.height = inlink->h; + if (!context->size.height || !context->size.width) { + av_log(NULL, AV_LOG_ERROR, "A positive height and width are required to render subtitles\n"); + return AVERROR_EXIT; + } + ass_set_frame_size(context->renderer, context->size.width, context->size.height); + ass_set_storage_size(context->renderer, inlink->w, inlink->h); + + return 0; +} + +static int config_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + Text2GraphicSubContext *context = ctx->priv; + + outlink->time_base = AV_TIME_BASE_Q; + outlink->format = AV_SUBTITLE_FMT_BITMAP; + outlink->w = context->size.width; + outlink->h = context->size.height; + + return 0; +} + +static int filter_frame(AVFilterLink *inlink, AVFrame *frame) +{ + const AVFilterContext *ctx = inlink->dst; + Text2GraphicSubContext *context = ctx->priv; + AVFilterLink *outlink = ctx->outputs[0]; + AVSubtitleArea *area; + int ret; + unsigned processed_area_cnt = 0; + const int64_t start_time = av_rescale_q(frame->subtitle_timing.start_pts, AV_TIME_BASE_Q, av_make_q(1, 1000)); + const int64_t duration = av_rescale_q(frame->subtitle_timing.duration, AV_TIME_BASE_Q, av_make_q(1, 1000)); + ASS_Image *image; + + // Postpone header processing until we receive a frame with content + if (!context->got_header && frame->num_subtitle_areas > 0) + process_header(ctx, frame); + + if (frame->repeat_sub || frame->num_subtitle_areas == 0) { + av_frame_free(&frame); + return 0; + } + + ret = av_frame_make_writable(frame); + if (ret < 0) + return ret; + + if (context->stripstyles) { + for (unsigned r = 0; r < frame->num_subtitle_areas; r++) { + + area = frame->subtitle_areas[r]; + + if (area->ass) { + char *tmp = area->ass; + area->ass = process_dialog(area->ass); + + if (area->ass) { + av_log(inlink->dst, AV_LOG_DEBUG, "original: %d %s\n", r, tmp); + av_log(inlink->dst, AV_LOG_DEBUG, "stripped: %d %s\n", r, area->ass); + } + + av_free(tmp); + } + } + } + + for (unsigned r = 0; r < frame->num_subtitle_areas; r++) + { + area = frame->subtitle_areas[r]; + if (area->type != AV_SUBTITLE_FMT_ASS || area->ass == NULL) + continue; + + ass_process_chunk(context->track, area->ass, strlen(area->ass), start_time, duration); + processed_area_cnt++; + + } + + if (processed_area_cnt == 0) { + av_frame_free(&frame); + return 0; + } + + for (unsigned r = 1; r < frame->num_subtitle_areas; r++) + av_free(frame->subtitle_areas[r]); + + frame->num_subtitle_areas = 1; + area = frame->subtitle_areas[0]; + + image = ass_render_frame(context->renderer, context->track, start_time + duration / 2, NULL); + if (image == NULL) { + av_log(NULL, AV_LOG_WARNING, "failed to render ass: %s\n", area->ass); + return 0; + } + + // TODO: Split into multiple bitmaps + + ass_image_to_area_palletization(context, image, area); + area->type = AV_SUBTITLE_FMT_BITMAP; + + av_log(NULL, AV_LOG_DEBUG, "successfully rendered ass: %s\n", area->ass); + + frame->width = context->size.width; + frame->height = context->size.height; + frame->format = AV_SUBTITLE_FMT_BITMAP; + return ff_filter_frame(outlink, frame); +} + +static av_cold void uninit(AVFilterContext *ctx) +{ + Text2GraphicSubContext *context = ctx->priv; + free_palettizecontext(&context->palettize_context); + if (context->track) ass_free_track(context->track); + if (context->renderer) ass_renderer_done(context->renderer); + if (context->library) ass_library_done(context->library); + context->track = NULL; + context->renderer = NULL; + context->library = NULL; +} + +// Copied from sf_graphicsub2text, with formats swapped +static int query_formats(AVFilterContext *ctx) +{ + AVFilterFormats *formats, *formats2; + AVFilterLink *inlink = ctx->inputs[0]; + AVFilterLink *outlink = ctx->outputs[0]; + static const enum AVSubtitleType in_fmts[] = { AV_SUBTITLE_FMT_ASS, AV_SUBTITLE_FMT_NONE }; + static const enum AVSubtitleType out_fmts[] = { AV_SUBTITLE_FMT_BITMAP, AV_SUBTITLE_FMT_NONE }; + int ret; + + /* set input format */ + formats = ff_make_format_list(in_fmts); + if ((ret = ff_formats_ref(formats, &inlink->outcfg.formats)) < 0) + return ret; + + /* set output format */ + formats2 = ff_make_format_list(out_fmts); + if ((ret = ff_formats_ref(formats2, &outlink->incfg.formats)) < 0) + return ret; + + return 0; +} + +// Filter structures + +#define OFFSET(x) offsetof(Text2GraphicSubContext, x) +#define FLAGS (AV_OPT_FLAG_SUBTITLE_PARAM|AV_OPT_FLAG_FILTERING_PARAM) + +static const AVOption text2graphicsub_options[] = { + { "s", "output size", OFFSET(size), AV_OPT_TYPE_IMAGE_SIZE, .default_val.str = NULL, .flags = FLAGS }, + { "size", "output size", OFFSET(size), AV_OPT_TYPE_IMAGE_SIZE, .default_val.str = NULL, .flags = FLAGS }, + { "n", "number of output colors", OFFSET(num_colors), AV_OPT_TYPE_INT, .min = 2, .max = 256, .default_val.i64 = 16, .flags = FLAGS }, + { "num_colors", "number of output colors", OFFSET(num_colors), AV_OPT_TYPE_INT, .min = 2, .max = 256, .default_val.i64 = 16, .flags = FLAGS }, + { "ss", "strip animations and blur styles", OFFSET(stripstyles), AV_OPT_TYPE_BOOL, .min = 0, .max = 1, .default_val.i64 = 1, .flags = FLAGS }, + { "stripstyles", "strip animations and blur styles", OFFSET(stripstyles), AV_OPT_TYPE_BOOL, .min = 0, .max = 1, .default_val.i64 = 1, .flags = FLAGS }, + { "force_style", "enforce subtitle styles", OFFSET(force_style), AV_OPT_TYPE_STRING, .default_val.str = NULL, .flags = FLAGS }, + { "f", "media file from which to load fonts", OFFSET(filename), AV_OPT_TYPE_STRING, .default_val.str = NULL, .flags = FLAGS }, + { "filename", "media file from which to load fonts", OFFSET(filename), AV_OPT_TYPE_STRING, .default_val.str = NULL, .flags = FLAGS }, + { "fd", "fonts directory", OFFSET(fontsdir), AV_OPT_TYPE_STRING, .default_val.str = NULL, .flags = FLAGS }, + { "fontsdir", "fonts directory", OFFSET(fontsdir), AV_OPT_TYPE_STRING, .default_val.str = NULL, .flags = FLAGS }, + { .name = NULL } +}; + +static const AVClass text2graphicsub_class = { + .class_name = "text2graphicsub", + .item_name = av_default_item_name, + .option = text2graphicsub_options, + .version = LIBAVUTIL_VERSION_INT, + .category = AV_CLASS_CATEGORY_FILTER, +}; + +static const AVFilterPad inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .filter_frame = filter_frame, + .config_props = config_input, + }, +}; + +static const AVFilterPad outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .config_props = config_output, + }, +}; + +const AVFilter ff_sf_text2graphicsub = { + .name = "text2graphicsub", + .description = NULL_IF_CONFIG_SMALL("Convert text subtitles to bitmap subtitles."), + .init = init, + .uninit = uninit, + .priv_size = sizeof(Text2GraphicSubContext), + .priv_class = &text2graphicsub_class, + FILTER_INPUTS(inputs), + FILTER_OUTPUTS(outputs), + FILTER_QUERY_FUNC(query_formats) +}; diff --git a/libavfilter/sf_textmod.c b/libavfilter/sf_textmod.c new file mode 100644 index 0000000000000..9651e07c65351 --- /dev/null +++ b/libavfilter/sf_textmod.c @@ -0,0 +1,710 @@ +/* + * Copyright (c) 2021 softworkz + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * text subtitle filter which allows to modify subtitle text in several ways + */ + +#include + +#include "libavutil/opt.h" +#include "internal.h" +#include "libavutil/ass_split_internal.h" +#include "libavutil/bprint.h" +#include "libavutil/file.h" + +static const char* leet_src = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; +static const char* leet_dst = "abcd3f6#1jklmn0pq257uvwxyzAB(D3F6#1JKLMN0PQ257UVWXYZ"; + +enum TextModFilterType { + TM_TEXTMOD, + TM_CENSOR, + TM_SHOW_SPEAKER, +}; + +enum TextModOperation { + OP_LEET, + OP_TO_UPPER, + OP_TO_LOWER, + OP_REPLACE_CHARS, + OP_REMOVE_CHARS, + OP_REPLACE_WORDS, + OP_REMOVE_WORDS, + NB_OPS, +}; + +enum CensorMode { + CM_KEEP_FIRST_LAST, + CM_KEEP_FIRST, + CM_ALL, +}; + +enum ShowSpeakerMode { + SM_SQUARE_BRACKETS, + SM_ROUND_BRACKETS, + SM_COLON, + SM_PLAIN, +}; + +typedef struct TextModContext { + const AVClass *class; + enum AVSubtitleType format; + enum TextModFilterType filter_type; + enum TextModOperation operation; + enum CensorMode censor_mode; + enum ShowSpeakerMode speaker_mode; + char *find; + char *find_file; + char *style; + char *replace; + char *replace_file; + char *separator; + char *censor_char; + char **find_list; + int line_break; + int nb_find_list; + char **replace_list; + int nb_replace_list; +} TextModContext; + +static char **split_string(char *source, int *nb_elems, const char *delim) +{ + char **list = NULL; + char *temp = NULL; + char *ptr = av_strtok(source, delim, &temp); + + while (ptr) { + if (strlen(ptr)) { + av_dynarray_add(&list, nb_elems, ptr); + if (!list) + return NULL; + } + + ptr = av_strtok(NULL, delim, &temp); + } + + if (!list) + return NULL; + + for (int i = 0; i < *nb_elems; i++) { + list[i] = av_strdup(list[i]); + if (!list[i]) { + for (int n = 0; n < i; n++) + av_free(list[n]); + av_free(list); + return NULL; + } + } + + return list; +} + +static int load_text_from_file(AVFilterContext *ctx, const char *file_name, char **text, char separator) +{ + int err; + uint8_t *textbuf; + char *tmp; + size_t textbuf_size; + int offset = 0; + + if ((err = av_file_map(file_name, &textbuf, &textbuf_size, 0, ctx)) < 0) { + av_log(ctx, AV_LOG_ERROR, "The text file '%s' could not be read or is empty\n", file_name); + return err; + } + + if (textbuf_size > 1 && + (textbuf[0] == 0xFF && textbuf[1] == 0xFE + || textbuf[0] == 0xFE && textbuf[1] == 0xFF)) { + av_log(ctx, AV_LOG_ERROR, "UTF text files are not supported. File: %s\n", file_name); + return AVERROR(EINVAL); + } + + if (textbuf_size > 2 && textbuf[0] == 0xEF && textbuf[1] == 0xBB && textbuf[2] == 0xBF) + offset = 3; // UTF-8 + + if (textbuf_size > SIZE_MAX - 1 || !((tmp = av_strndup((char *)textbuf + offset, textbuf_size - offset)))) { + av_file_unmap(textbuf, textbuf_size); + return AVERROR(ENOMEM); + } + + av_file_unmap(textbuf, textbuf_size); + + for (size_t i = 0; i < strlen(tmp); i++) { + switch (tmp[i]) { + case '\n': + case '\r': + case '\f': + case '\v': + tmp[i] = separator; + } + } + + *text = tmp; + + return 0; +} + +static int load_files(AVFilterContext *ctx) +{ + TextModContext *s = ctx->priv; + int ret; + + if (!s->separator || strlen(s->separator) != 1) { + av_log(ctx, AV_LOG_ERROR, "A single character needs to be specified for the separator parameter.\n"); + return AVERROR(EINVAL); + } + + if (s->find_file && strlen(s->find_file)) { + ret = load_text_from_file(ctx, s->find_file, &s->find, s->separator[0]); + if (ret < 0 ) + return ret; + } + + if (s->replace_file && strlen(s->replace_file)) { + ret = load_text_from_file(ctx, s->replace_file, &s->replace, s->separator[0]); + if (ret < 0 ) + return ret; + } + + return 0; +} + +static int init_censor(AVFilterContext *ctx) +{ + TextModContext *s = ctx->priv; + int ret; + + s->filter_type = TM_CENSOR; + s->operation = OP_REPLACE_WORDS; + + ret = load_files(ctx); + if (ret < 0 ) + return ret; + + if (!s->find || !strlen(s->find)) { + av_log(ctx, AV_LOG_ERROR, "Either the 'words' or the 'words_file' parameter needs to be specified\n"); + return AVERROR(EINVAL); + } + + if (!s->censor_char || strlen(s->censor_char) != 1) { + av_log(ctx, AV_LOG_ERROR, "A single character needs to be specified for the censor_char parameter\n"); + return AVERROR(EINVAL); + } + + s->find_list = split_string(s->find, &s->nb_find_list, s->separator); + if (!s->find_list) + return AVERROR(ENOMEM); + + s->replace_list = av_calloc(s->nb_find_list, sizeof(char *)); + if (!s->replace_list) + return AVERROR(ENOMEM); + + for (int i = 0; i < s->nb_find_list; i++) { + size_t len, start = 0, end; + char *item = av_strdup(s->find_list[i]); + if (!item) + return AVERROR(ENOMEM); + + len = end = strlen(item); + + switch (s->censor_mode) { + case CM_KEEP_FIRST_LAST: + + if (len > 2) + start = 1; + if (len > 3) + end--; + + break; + case CM_KEEP_FIRST: + + if (len > 2) + start = 1; + + break; + } + + for (size_t n = start; n < end; n++) + item[n] = s->censor_char[0]; + + s->replace_list[i] = item; + } + + return 0; +} + +static int init_showspeaker(AVFilterContext *ctx) +{ + TextModContext *s = ctx->priv; + s->filter_type = TM_SHOW_SPEAKER; + + return 0; +} + +static int init(AVFilterContext *ctx) +{ + TextModContext *s = ctx->priv; + int ret; + + ret = load_files(ctx); + if (ret < 0 ) + return ret; + + switch (s->operation) { + case OP_REPLACE_CHARS: + case OP_REMOVE_CHARS: + case OP_REPLACE_WORDS: + case OP_REMOVE_WORDS: + if (!s->find || !strlen(s->find)) { + av_log(ctx, AV_LOG_ERROR, "Selected mode requires the 'find' parameter to be specified\n"); + return AVERROR(EINVAL); + } + break; + } + + switch (s->operation) { + case OP_REPLACE_CHARS: + case OP_REPLACE_WORDS: + if (!s->replace || !strlen(s->replace)) { + av_log(ctx, AV_LOG_ERROR, "Selected mode requires the 'replace' parameter to be specified\n"); + return AVERROR(EINVAL); + } + break; + } + + if (s->operation == OP_REPLACE_CHARS && strlen(s->find) != strlen(s->replace)) { + av_log(ctx, AV_LOG_ERROR, "Selected mode requires the 'find' and 'replace' parameters to have the same length\n"); + return AVERROR(EINVAL); + } + + if (s->operation == OP_REPLACE_WORDS || s->operation == OP_REMOVE_WORDS) { + if (!s->separator || strlen(s->separator) != 1) { + av_log(ctx, AV_LOG_ERROR, "Selected mode requires a single separator char to be specified\n"); + return AVERROR(EINVAL); + } + + s->find_list = split_string(s->find, &s->nb_find_list, s->separator); + if (!s->find_list) + return AVERROR(ENOMEM); + + if (s->operation == OP_REPLACE_WORDS) { + + s->replace_list = split_string(s->replace, &s->nb_replace_list, s->separator); + if (!s->replace_list) + return AVERROR(ENOMEM); + + if (s->nb_find_list != s->nb_replace_list) { + av_log(ctx, AV_LOG_ERROR, "The number of words in 'find' and 'replace' needs to be equal\n"); + return AVERROR(EINVAL); + } + } + } + + return 0; +} + +static void uninit(AVFilterContext *ctx) +{ + TextModContext *s = ctx->priv; + + for (int i = 0; i < s->nb_find_list; i++) + av_freep(&s->find_list[i]); + + s->nb_find_list = 0; + av_freep(&s->find_list); + + for (int i = 0; i < s->nb_replace_list; i++) + av_freep(&s->replace_list[i]); + + s->nb_replace_list = 0; + av_freep(&s->replace_list); +} + +static char *process_text(TextModContext *s, char *text) +{ + const char *char_src = s->find; + const char *char_dst = s->replace; + char *result = NULL; + int escape_level = 0, k = 0; + + switch (s->operation) { + case OP_LEET: + case OP_REPLACE_CHARS: + + if (s->operation == OP_LEET) { + char_src = leet_src; + char_dst = leet_dst; + } + + result = av_strdup(text); + if (!result) + return NULL; + + for (size_t n = 0; n < strlen(result); n++) { + if (result[n] == '{') + escape_level++; + + if (!escape_level) { + size_t len = strlen(char_src); + for (size_t t = 0; t < len; t++) { + if (result[n] == char_src[t]) { + result[n] = char_dst[t]; + break; + } + } + } + + if (result[n] == '}') + escape_level--; + } + + break; + case OP_TO_UPPER: + case OP_TO_LOWER: + + result = av_strdup(text); + if (!result) + return NULL; + + for (size_t n = 0; n < strlen(result); n++) { + if (result[n] == '{') + escape_level++; + if (!escape_level) + result[n] = s->operation == OP_TO_LOWER ? av_tolower(result[n]) : av_toupper(result[n]); + if (result[n] == '}') + escape_level--; + } + + break; + case OP_REMOVE_CHARS: + + result = av_strdup(text); + if (!result) + return NULL; + + for (size_t n = 0; n < strlen(result); n++) { + int skip_char = 0; + + if (result[n] == '{') + escape_level++; + + if (!escape_level) { + size_t len = strlen(char_src); + for (size_t t = 0; t < len; t++) { + if (result[n] == char_src[t]) { + skip_char = 1; + break; + } + } + } + + if (!skip_char) + result[k++] = result[n]; + + if (result[n] == '}') + escape_level--; + } + + result[k] = 0; + + break; + case OP_REPLACE_WORDS: + case OP_REMOVE_WORDS: + + result = av_strdup(text); + if (!result) + return NULL; + + for (int n = 0; n < s->nb_find_list; n++) { + char *tmp = result; + const char *replace = (s->operation == OP_REPLACE_WORDS) ? s->replace_list[n] : ""; + + result = av_strireplace(result, s->find_list[n], replace); + if (!result) + return NULL; + + av_free(tmp); + } + + break; + } + + return result; +} + +static char *process_dialog_show_speaker(TextModContext *s, char *ass_line) +{ + ASSDialog *dialog = avpriv_ass_split_dialog(NULL, ass_line); + int escape_level = 0; + unsigned pos = 0, len; + char *result, *text; + AVBPrint pbuf; + + if (!dialog) + return NULL; + + text = process_text(s, dialog->text); + if (!text) + return NULL; + + if (!dialog->name || !strlen(dialog->name) || !dialog->text || !strlen(dialog->text)) + return av_strdup(ass_line); + + // Find insertion point in case the line starts with style codes + len = (unsigned)strlen(dialog->text); + for (unsigned i = 0; i < len; i++) { + + if (dialog->text[i] == '{') + escape_level++; + + if (dialog->text[i] == '}') + escape_level--; + + if (escape_level == 0) { + pos = i; + break; + } + } + + if (s->style && strlen(s->style)) + // When a style is specified reset the insertion point + // (always add speaker plus style at the start in that case) + pos = 0; + + if (pos >= len - 1) + return av_strdup(ass_line); + + av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED); + + if (pos > 0) { + av_bprint_append_data(&pbuf, dialog->text, pos); + } + + if (s->style && strlen(s->style)) { + if (s->style[0] == '{') + // Assume complete and valid style code, e.g. {\c&HFF0000&} + av_bprintf(&pbuf, "%s", s->style); + else + // Otherwise it must be a style name + av_bprintf(&pbuf, "{\\r%s}", s->style); + } + + switch (s->speaker_mode) { + case SM_SQUARE_BRACKETS: + av_bprintf(&pbuf, "[%s]", dialog->name); + break; + case SM_ROUND_BRACKETS: + av_bprintf(&pbuf, "(%s)", dialog->name); + break; + case SM_COLON: + av_bprintf(&pbuf, "%s:", dialog->name); + break; + case SM_PLAIN: + av_bprintf(&pbuf, "%s", dialog->name); + break; + } + + if (s->style && strlen(s->style)) { + // Reset line style + if (dialog->style && strlen(dialog->style) && !av_strcasecmp(dialog->style, "default")) + av_bprintf(&pbuf, "{\\r%s}", dialog->style); + else + av_bprintf(&pbuf, "{\\r}"); + } + + if (s->line_break) + av_bprintf(&pbuf, "\\N"); + else + av_bprintf(&pbuf, " "); + + av_bprint_append_data(&pbuf, dialog->text + pos, len - pos); + + av_bprint_finalize(&pbuf, &text); + + result = avpriv_ass_get_dialog_ex(dialog->readorder, dialog->layer, dialog->style, dialog->name, dialog->margin_l, dialog->margin_r, dialog->margin_v, dialog->effect, text); + + av_free(text); + avpriv_ass_free_dialog(&dialog); + return result; +} + +static char *process_dialog(TextModContext *s, char *ass_line) +{ + ASSDialog *dialog; + char *result, *text; + + if (s->filter_type == TM_SHOW_SPEAKER) + return process_dialog_show_speaker(s, ass_line); + + dialog = avpriv_ass_split_dialog(NULL, ass_line); + if (!dialog) + return NULL; + + text = process_text(s, dialog->text); + if (!text) + return NULL; + + result = avpriv_ass_get_dialog_ex(dialog->readorder, dialog->layer, dialog->style, dialog->name, dialog->margin_l, dialog->margin_r, dialog->margin_v, dialog->effect, text); + + av_free(text); + avpriv_ass_free_dialog(&dialog); + return result; +} + +static int config_output(AVFilterLink *outlink) +{ + AVFilterLink *inlink = outlink->src->inputs[0]; + + outlink->w = inlink->w; + outlink->h = inlink->h; + outlink->time_base = inlink->time_base; + outlink->frame_rate = inlink->frame_rate; + + return 0; +} + +static int filter_frame(AVFilterLink *inlink, AVFrame *frame) +{ + TextModContext *s = inlink->dst->priv; + AVFilterLink *outlink = inlink->dst->outputs[0]; + int ret; + + outlink->format = inlink->format; + + ret = av_frame_make_writable(frame); + if (ret < 0) + return ret; + + for (unsigned i = 0; i < frame->num_subtitle_areas; i++) { + + AVSubtitleArea *area = frame->subtitle_areas[i]; + + if (area->ass) { + char *tmp = area->ass; + area->ass = process_dialog(s, area->ass); + av_free(tmp); + if (!area->ass) + return AVERROR(ENOMEM); + } + } + + return ff_filter_frame(outlink, frame); +} + +#define OFFSET(x) offsetof(TextModContext, x) +#define FLAGS (AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_FILTERING_PARAM) + +static const AVOption textmod_options[] = { + { "mode", "set operation mode", OFFSET(operation), AV_OPT_TYPE_INT, {.i64=OP_LEET}, OP_LEET, NB_OPS-1, FLAGS, "mode" }, + { "leet", "convert text to 'leet speak'", 0, AV_OPT_TYPE_CONST, {.i64=OP_LEET}, 0, 0, FLAGS, "mode" }, + { "to_upper", "change to upper case", 0, AV_OPT_TYPE_CONST, {.i64=OP_TO_UPPER}, 0, 0, FLAGS, "mode" }, + { "to_lower", "change to lower case", 0, AV_OPT_TYPE_CONST, {.i64=OP_TO_LOWER}, 0, 0, FLAGS, "mode" }, + { "replace_chars", "replace characters", 0, AV_OPT_TYPE_CONST, {.i64=OP_REPLACE_CHARS}, 0, 0, FLAGS, "mode" }, + { "remove_chars", "remove characters", 0, AV_OPT_TYPE_CONST, {.i64=OP_REMOVE_CHARS}, 0, 0, FLAGS, "mode" }, + { "replace_words", "replace words", 0, AV_OPT_TYPE_CONST, {.i64=OP_REPLACE_WORDS}, 0, 0, FLAGS, "mode" }, + { "remove_words", "remove words", 0, AV_OPT_TYPE_CONST, {.i64=OP_REMOVE_WORDS}, 0, 0, FLAGS, "mode" }, + { "find", "chars/words to find or remove", OFFSET(find), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS, NULL }, + { "find_file", "load find param from file", OFFSET(find_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS, NULL }, + { "replace", "chars/words to replace", OFFSET(replace), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS, NULL }, + { "replace_file", "load replace param from file", OFFSET(replace_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS, NULL }, + { "separator", "word separator", OFFSET(separator), AV_OPT_TYPE_STRING, {.str = ","}, 0, 0, FLAGS, NULL }, + { NULL }, +}; + + +static const AVOption censor_options[] = { + { "mode", "set censoring mode", OFFSET(censor_mode), AV_OPT_TYPE_INT, {.i64=CM_KEEP_FIRST_LAST}, 0, 2, FLAGS, "mode" }, + { "keep_first_last", "censor inner chars", 0, AV_OPT_TYPE_CONST, {.i64=CM_KEEP_FIRST_LAST}, 0, 0, FLAGS, "mode" }, + { "keep_first", "censor all but first char", 0, AV_OPT_TYPE_CONST, {.i64=CM_KEEP_FIRST}, 0, 0, FLAGS, "mode" }, + { "all", "censor all chars", 0, AV_OPT_TYPE_CONST, {.i64=CM_ALL}, 0, 0, FLAGS, "mode" }, + { "words", "list of words to censor", OFFSET(find), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS, NULL }, + { "words_file", "path to word list file", OFFSET(find_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS, NULL }, + { "separator", "word separator", OFFSET(separator), AV_OPT_TYPE_STRING, {.str = ","}, 0, 0, FLAGS, NULL }, + { "censor_char", "replacement character", OFFSET(censor_char), AV_OPT_TYPE_STRING, {.str = "*"}, 0, 0, FLAGS, NULL }, + { NULL }, +}; + +static const AVOption showspeaker_options[] = { + { "format", "speaker name formatting", OFFSET(speaker_mode), AV_OPT_TYPE_INT, {.i64=SM_SQUARE_BRACKETS}, 0, 2, FLAGS, "format" }, + { "square_brackets", "[speaker] text", 0, AV_OPT_TYPE_CONST, {.i64=SM_SQUARE_BRACKETS}, 0, 0, FLAGS, "format" }, + { "round_brackets", "(speaker) text", 0, AV_OPT_TYPE_CONST, {.i64=SM_ROUND_BRACKETS}, 0, 0, FLAGS, "format" }, + { "colon", "speaker: text", 0, AV_OPT_TYPE_CONST, {.i64=SM_COLON}, 0, 0, FLAGS, "format" }, + { "plain", "speaker text", 0, AV_OPT_TYPE_CONST, {.i64=SM_PLAIN}, 0, 0, FLAGS, "format" }, + { "line_break", "insert line break", OFFSET(line_break), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS, NULL }, + { "style", "ass type name or style code", OFFSET(style), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS, NULL }, + { NULL }, +}; + +AVFILTER_DEFINE_CLASS(textmod); +AVFILTER_DEFINE_CLASS(censor); +AVFILTER_DEFINE_CLASS(showspeaker); + +static const AVFilterPad inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .filter_frame = filter_frame, + }, +}; + +static const AVFilterPad outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .config_props = config_output, + }, +}; + +const AVFilter ff_sf_textmod = { + .name = "textmod", + .description = NULL_IF_CONFIG_SMALL("Modify subtitle text in several ways"), + .init = init, + .uninit = uninit, + .priv_size = sizeof(TextModContext), + .priv_class = &textmod_class, + FILTER_INPUTS(inputs), + FILTER_OUTPUTS(outputs), + FILTER_SINGLE_SUBFMT(AV_SUBTITLE_FMT_ASS), +}; + +const AVFilter ff_sf_censor = { + .name = "censor", + .description = NULL_IF_CONFIG_SMALL("Censor words in subtitle text"), + .init = init_censor, + .uninit = uninit, + .priv_size = sizeof(TextModContext), + .priv_class = &censor_class, + FILTER_INPUTS(inputs), + FILTER_OUTPUTS(outputs), + FILTER_SINGLE_SUBFMT(AV_SUBTITLE_FMT_ASS), +}; + +const AVFilter ff_sf_showspeaker = { + .name = "showspeaker", + .description = NULL_IF_CONFIG_SMALL("Prepend speaker names to text subtitles (when available)"), + .init = init_showspeaker, + .uninit = uninit, + .priv_size = sizeof(TextModContext), + .priv_class = &showspeaker_class, + FILTER_INPUTS(inputs), + FILTER_OUTPUTS(outputs), + FILTER_SINGLE_SUBFMT(AV_SUBTITLE_FMT_ASS), +}; diff --git a/libavfilter/subtitles.c b/libavfilter/subtitles.c new file mode 100644 index 0000000000000..951bfd612c533 --- /dev/null +++ b/libavfilter/subtitles.c @@ -0,0 +1,63 @@ +/* + * Copyright (c) 2021 softworkz + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/common.h" + +#include "subtitles.h" +#include "avfilter.h" +#include "internal.h" + + +AVFrame *ff_null_get_subtitles_buffer(AVFilterLink *link, int format) +{ + return ff_get_subtitles_buffer(link->dst->outputs[0], format); +} + +AVFrame *ff_default_get_subtitles_buffer(AVFilterLink *link, int format) +{ + AVFrame *frame; + + frame = av_frame_alloc(); + if (!frame) + return NULL; + + frame->format = format; + frame->type = AVMEDIA_TYPE_SUBTITLE; + + if (av_frame_get_buffer2(frame, 0) < 0) { + av_frame_free(&frame); + return NULL; + } + + return frame; +} + +AVFrame *ff_get_subtitles_buffer(AVFilterLink *link, int format) +{ + AVFrame *ret = NULL; + + if (link->dstpad->get_buffer.subtitle) + ret = link->dstpad->get_buffer.subtitle(link, format); + + if (!ret) + ret = ff_default_get_subtitles_buffer(link, format); + + return ret; +} diff --git a/libavfilter/subtitles.h b/libavfilter/subtitles.h new file mode 100644 index 0000000000000..4a9115126e87b --- /dev/null +++ b/libavfilter/subtitles.h @@ -0,0 +1,44 @@ +/* + * Copyright (c) 2021 softworkz + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVFILTER_SUBTITLES_H +#define AVFILTER_SUBTITLES_H + +#include "avfilter.h" +#include "internal.h" + +/** default handler for get_subtitles_buffer() for subtitle inputs */ +AVFrame *ff_default_get_subtitles_buffer(AVFilterLink *link, int format); + +/** get_subtitles_buffer() handler for filters which simply pass subtitles along */ +AVFrame *ff_null_get_subtitles_buffer(AVFilterLink *link, int format); + +/** + * Request a subtitles frame with a specific set of permissions. + * + * @param link the output link to the filter from which the buffer will + * be requested + * @param format The subtitles format. + * @return A reference to the frame. This must be unreferenced with + * av_frame_free when you are finished with it. +*/ +AVFrame *ff_get_subtitles_buffer(AVFilterLink *link, int format); + +#endif /* AVFILTER_SUBTITLES_H */ diff --git a/libavfilter/trim.c b/libavfilter/trim.c index ee6e821cd2449..a25366497b151 100644 --- a/libavfilter/trim.c +++ b/libavfilter/trim.c @@ -83,7 +83,7 @@ static int config_input(AVFilterLink *inlink) { AVFilterContext *ctx = inlink->dst; TrimContext *s = ctx->priv; - AVRational tb = (inlink->type == AVMEDIA_TYPE_VIDEO) ? + AVRational tb = (inlink->type != AVMEDIA_TYPE_AUDIO) ? inlink->time_base : (AVRational){ 1, inlink->sample_rate }; if (s->start_time != INT64_MAX) { @@ -369,3 +369,61 @@ const AVFilter ff_af_atrim = { FILTER_OUTPUTS(atrim_outputs), }; #endif // CONFIG_ATRIM_FILTER + +#if CONFIG_STRIM_FILTER + +static int sconfig_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + AVFilterLink *inlink = ctx->inputs[0]; + + outlink->format = inlink->format; + outlink->w = inlink->w; + outlink->h = inlink->h; + + return 0; +} + + +#define FLAGS (AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_FILTERING_PARAM) +static const AVOption strim_options[] = { + COMMON_OPTS + { "start_frame", "Number of the first frame that should be passed " + "to the output", OFFSET(start_frame), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, FLAGS }, + { "end_frame", "Number of the first frame that should be dropped " + "again", OFFSET(end_frame), AV_OPT_TYPE_INT64, { .i64 = INT64_MAX }, 0, INT64_MAX, FLAGS }, + { NULL } +}; +#undef FLAGS + +AVFILTER_DEFINE_CLASS(strim); + +static const AVFilterPad strim_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .filter_frame = trim_filter_frame, + .config_props = config_input, + }, +}; + +static const AVFilterPad strim_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .config_props = sconfig_output, + }, +}; + +const AVFilter ff_sf_strim = { + .name = "strim", + .description = NULL_IF_CONFIG_SMALL("Pick one continuous section from the input, drop the rest."), + .init = init, + .priv_size = sizeof(TrimContext), + .priv_class = &strim_class, + .flags = AVFILTER_FLAG_METADATA_ONLY, + FILTER_INPUTS(strim_inputs), + FILTER_OUTPUTS(strim_outputs), +}; +#endif // CONFIG_STRIM_FILTER + diff --git a/libavfilter/vf_overlaygraphicsubs.c b/libavfilter/vf_overlaygraphicsubs.c new file mode 100644 index 0000000000000..7b26d8ef37eba --- /dev/null +++ b/libavfilter/vf_overlaygraphicsubs.c @@ -0,0 +1,765 @@ +/* + * Copyright (c) 2021 softworkz (derived from vf_overlay) + * Copyright (c) 2010 Stefano Sabatini + * Copyright (c) 2010 Baptiste Coudurier + * Copyright (c) 2007 Bobby Bingham + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * overlay graphical subtitles on top of a video frame + */ + +#include "libavutil/eval.h" +#include "libavutil/imgutils.h" +#include "libavutil/opt.h" +#include "internal.h" +#include "drawutils.h" +#include "framesync.h" + +enum var_name { + VAR_MAIN_W, VAR_MW, + VAR_MAIN_H, VAR_MH, + VAR_OVERLAY_W, VAR_OW, + VAR_OVERLAY_H, VAR_OH, + VAR_HSUB, + VAR_VSUB, + VAR_X, + VAR_Y, + VAR_N, + VAR_POS, + VAR_T, + VAR_VARS_NB +}; + +typedef struct OverlaySubsContext { + const AVClass *class; + int x, y; ///< position of overlaid picture + int w, h; + AVFrame *outpicref; + + int main_is_packed_rgb; + uint8_t main_rgba_map[4]; + int main_has_alpha; + uint8_t overlay_rgba_map[4]; + int eval_mode; ///< EvalMode + int use_caching; + AVFrame *cache_frame; + + FFFrameSync fs; + + int main_pix_step[4]; ///< steps per pixel for each plane of the main output + int hsub, vsub; ///< chroma subsampling values + const AVPixFmtDescriptor *main_desc; ///< format descriptor for main input + + double var_values[VAR_VARS_NB]; + char *x_expr, *y_expr; + + AVExpr *x_pexpr, *y_pexpr; + + int pic_counter; +} OverlaySubsContext; + +static const char *const var_names[] = { + "main_w", "W", ///< width of the main video + "main_h", "H", ///< height of the main video + "overlay_w", "w", ///< width of the overlay video + "overlay_h", "h", ///< height of the overlay video + "hsub", + "vsub", + "x", + "y", + "n", ///< number of frame + "pos", ///< position in the file + "t", ///< timestamp expressed in seconds + NULL +}; + +#define MAIN 0 +#define OVERLAY 1 + +#define R 0 +#define G 1 +#define B 2 +#define A 3 + +#define Y 0 +#define U 1 +#define V 2 + +enum EvalMode { + EVAL_MODE_INIT, + EVAL_MODE_FRAME, + EVAL_MODE_NB +}; + +static av_cold void overlay_graphicsubs_uninit(AVFilterContext *ctx) +{ + OverlaySubsContext *s = ctx->priv; + + av_frame_free(&s->cache_frame); + ff_framesync_uninit(&s->fs); + av_expr_free(s->x_pexpr); s->x_pexpr = NULL; + av_expr_free(s->y_pexpr); s->y_pexpr = NULL; +} + +static inline int normalize_xy(double d, int chroma_sub) +{ + if (isnan(d)) + return INT_MAX; + return (int)d & ~((1 << chroma_sub) - 1); +} + +static void eval_expr(AVFilterContext *ctx) +{ + OverlaySubsContext *s = ctx->priv; + + s->var_values[VAR_X] = av_expr_eval(s->x_pexpr, s->var_values, NULL); + s->var_values[VAR_Y] = av_expr_eval(s->y_pexpr, s->var_values, NULL); + /* It is necessary if x is expressed from y */ + s->var_values[VAR_X] = av_expr_eval(s->x_pexpr, s->var_values, NULL); + s->x = normalize_xy(s->var_values[VAR_X], s->hsub); + s->y = normalize_xy(s->var_values[VAR_Y], s->vsub); +} + +static int set_expr(AVExpr **pexpr, const char *expr, const char *option, void *log_ctx) +{ + int ret; + AVExpr *old = NULL; + + if (*pexpr) + old = *pexpr; + ret = av_expr_parse(pexpr, expr, var_names, + NULL, NULL, NULL, NULL, 0, log_ctx); + if (ret < 0) { + av_log(log_ctx, AV_LOG_ERROR, + "Error when evaluating the expression '%s' for %s\n", + expr, option); + *pexpr = old; + return ret; + } + + av_expr_free(old); + return 0; +} + +static int overlay_graphicsubs_query_formats(AVFilterContext *ctx) +{ + AVFilterFormats *formats; + AVFilterLink *inlink0 = ctx->inputs[0]; + AVFilterLink *inlink1 = ctx->inputs[1]; + AVFilterLink *outlink = ctx->outputs[0]; + int ret; + static const enum AVSubtitleType subtitle_fmts[] = { AV_SUBTITLE_FMT_BITMAP, AV_SUBTITLE_FMT_NONE }; + static const enum AVPixelFormat supported_pix_fmts[] = { + AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, + AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA, + AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA, + AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, + AV_PIX_FMT_NONE + }; + + /* set input0 video formats */ + formats = ff_make_format_list(supported_pix_fmts); + if ((ret = ff_formats_ref(formats, &inlink0->outcfg.formats)) < 0) + return ret; + + /* set output0 video formats */ + if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0) + return ret; + + /* set input1 subtitle formats */ + formats = ff_make_format_list(subtitle_fmts); + if ((ret = ff_formats_ref(formats, &inlink1->outcfg.formats)) < 0) + return ret; + + return 0; +} + +static int config_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + OverlaySubsContext *s = ctx->priv; + int ret; + + if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0) + return ret; + + outlink->w = ctx->inputs[MAIN]->w; + outlink->h = ctx->inputs[MAIN]->h; + outlink->time_base = ctx->inputs[MAIN]->time_base; + outlink->frame_rate = ctx->inputs[MAIN]->frame_rate; + + return ff_framesync_configure(&s->fs); +} + +// divide by 255 and round to nearest +// apply a fast variant: (X+127)/255 = ((X+127)*257+257)>>16 = ((X+128)*257)>>16 +#define FAST_DIV255(x) ((((x) + 128) * 257) >> 16) + +// calculate the non-pre-multiplied alpha, applying the general equation: +// alpha = alpha_overlay / ( (alpha_main + alpha_overlay) - (alpha_main * alpha_overlay) ) +// (((x) << 16) - ((x) << 9) + (x)) is a faster version of: 255 * 255 * x +// ((((x) + (y)) << 8) - ((x) + (y)) - (y) * (x)) is a faster version of: 255 * (x + y) +#define UNPREMULTIPLY_ALPHA(x, y) ((((x) << 16) - ((x) << 9) + (x)) / ((((x) + (y)) << 8) - ((x) + (y)) - (y) * (x))) + +/** + * Blend image in src to destination buffer dst at position (x, y). + */ +static av_always_inline void blend_packed_rgb(const AVFilterContext *ctx, + const AVFrame *dst, const AVSubtitleArea *src, + int x, int y, + int is_straight) +{ + OverlaySubsContext *s = ctx->priv; + int i, imax, j, jmax; + const int src_w = src->w; + const int src_h = src->h; + const int dst_w = dst->width; + const int dst_h = dst->height; + uint8_t alpha; ///< the amount of overlay to blend on to main + const int dr = s->main_rgba_map[R]; + const int dg = s->main_rgba_map[G]; + const int db = s->main_rgba_map[B]; + const int da = s->main_rgba_map[A]; + const int dstep = s->main_pix_step[0]; + const int sr = s->overlay_rgba_map[R]; + const int sg = s->overlay_rgba_map[G]; + const int sb = s->overlay_rgba_map[B]; + const int sa = s->overlay_rgba_map[A]; + int slice_start, slice_end; + uint8_t *S, *sp, *d, *dp; + + i = FFMAX(-y, 0); + imax = FFMIN3(-y + dst_h, FFMIN(src_h, dst_h), y + src_h); + + slice_start = i; + slice_end = i + imax; + + sp = src->buf[0]->data + slice_start * src->linesize[0]; + dp = dst->data[0] + (slice_start + y) * dst->linesize[0]; + + for (i = slice_start; i < slice_end; i++) { + j = FFMAX(-x, 0); + S = sp + j; + d = dp + ((x + j) * dstep); + + for (jmax = FFMIN(-x + dst_w, src_w); j < jmax; j++) { + uint32_t val = src->pal[*S]; + const uint8_t *sval = (uint8_t *)&val; + alpha = sval[sa]; + + // if the main channel has an alpha channel, alpha has to be calculated + // to create an un-premultiplied (straight) alpha value + if (s->main_has_alpha && alpha != 0 && alpha != 255) { + const uint8_t alpha_d = d[da]; + alpha = UNPREMULTIPLY_ALPHA(alpha, alpha_d); + } + + switch (alpha) { + case 0: + break; + case 255: + d[dr] = sval[sr]; + d[dg] = sval[sg]; + d[db] = sval[sb]; + break; + default: + // main_value = main_value * (1 - alpha) + overlay_value * alpha + // since alpha is in the range 0-255, the result must divided by 255 + d[dr] = is_straight ? FAST_DIV255(d[dr] * (255 - alpha) + sval[sr] * alpha) : + FFMIN(FAST_DIV255(d[dr] * (255 - alpha)) + sval[sr], 255); + d[dg] = is_straight ? FAST_DIV255(d[dg] * (255 - alpha) + sval[sg] * alpha) : + FFMIN(FAST_DIV255(d[dg] * (255 - alpha)) + sval[sg], 255); + d[db] = is_straight ? FAST_DIV255(d[db] * (255 - alpha) + sval[sb] * alpha) : + FFMIN(FAST_DIV255(d[db] * (255 - alpha)) + sval[sb], 255); + } + + if (s->main_has_alpha) { + switch (alpha) { + case 0: + break; + case 255: + d[da] = sval[sa]; + break; + default: + // apply alpha compositing: main_alpha += (1-main_alpha) * overlay_alpha + d[da] += FAST_DIV255((255 - d[da]) * S[sa]); + } + } + d += dstep; + S += 1; + } + dp += dst->linesize[0]; + sp += src->linesize[0]; + } +} + +static av_always_inline void blend_plane_8_8bits(const AVFilterContext *ctx, const AVFrame *dst, const AVSubtitleArea *area, + const uint32_t *yuv_pal, int src_w, int src_h, int dst_w, int dst_h, int plane, int hsub, int vsub, + int x, int y, int dst_plane, int dst_offset, int dst_step) +{ + const int src_wp = AV_CEIL_RSHIFT(src_w, hsub); + const int src_hp = AV_CEIL_RSHIFT(src_h, vsub); + const int dst_wp = AV_CEIL_RSHIFT(dst_w, hsub); + const int dst_hp = AV_CEIL_RSHIFT(dst_h, vsub); + const int yp = y >> vsub; + const int xp = x >> hsub; + uint8_t *s, *sp, *d, *dp, *dap; + int imax, i, j, jmax; + int slice_start, slice_end; + + i = FFMAX(-yp, 0); \ + imax = FFMIN3(-yp + dst_hp, FFMIN(src_hp, dst_hp), yp + src_hp); \ + + slice_start = i; + slice_end = i + imax; + + sp = area->buf[0]->data + (slice_start << vsub) * area->linesize[0]; + dp = dst->data[dst_plane] + (yp + slice_start) * dst->linesize[dst_plane] + dst_offset; + + dap = dst->data[3] + ((yp + slice_start) << vsub) * dst->linesize[3]; + + for (i = slice_start; i < slice_end; i++) { + j = FFMAX(-xp, 0); + d = dp + (xp + j) * dst_step; + s = sp + (j << hsub); + jmax = FFMIN(-xp + dst_wp, src_wp); + + for (; j < jmax; j++) { + uint32_t val = yuv_pal[*s]; + const uint8_t *sval = (uint8_t *)&val; + const int alpha = sval[3]; + const int max = 255, mid = 128; + const int d_int = *d; + const int sval_int = sval[plane]; + + switch (alpha) { + case 0: + break; + case 255: + *d = sval[plane]; + break; + default: + if (plane > 0) + *d = av_clip(FAST_DIV255((d_int - mid) * (max - alpha) + (sval_int - mid) * alpha) , -mid, mid) + mid; + else + *d = FAST_DIV255(d_int * (max - alpha) + sval_int * alpha); + break; + } + + d += dst_step; + s += 1 << hsub; + } + dp += dst->linesize[dst_plane]; + sp += (1 << vsub) * area->linesize[0]; + dap += (1 << vsub) * dst->linesize[3]; + } +} + +#define RGB2Y(r, g, b) (uint8_t)(((66 * (r) + 129 * (g) + 25 * (b) + 128) >> 8) + 16) +#define RGB2U(r, g, b) (uint8_t)(((-38 * (r) - 74 * (g) + 112 * (b) + 128) >> 8) + 128) +#define RGB2V(r, g, b) (uint8_t)(((112 * (r) - 94 * (g) - 18 * (b) + 128) >> 8) + 128) +/* Converts R8 G8 B8 color to YUV. */ +static av_always_inline void rgb_2_yuv(uint8_t r, uint8_t g, uint8_t b, uint8_t* y, uint8_t* u, uint8_t* v) +{ + *y = RGB2Y((int)r, (int)g, (int)b); + *u = RGB2U((int)r, (int)g, (int)b); + *v = RGB2V((int)r, (int)g, (int)b); +} + + +static av_always_inline void blend_yuv_8_8bits(AVFilterContext *ctx, AVFrame *dst, const AVSubtitleArea *area, int hsub, int vsub, int x, int y) +{ + OverlaySubsContext *s = ctx->priv; + const int src_w = area->w; + const int src_h = area->h; + const int dst_w = dst->width; + const int dst_h = dst->height; + const int sr = s->overlay_rgba_map[R]; + const int sg = s->overlay_rgba_map[G]; + const int sb = s->overlay_rgba_map[B]; + const int sa = s->overlay_rgba_map[A]; + uint32_t yuvpal[256]; + + for (int i = 0; i < 256; ++i) { + const uint8_t *rgba = (const uint8_t *)&area->pal[i]; + uint8_t *yuva = (uint8_t *)&yuvpal[i]; + rgb_2_yuv(rgba[sr], rgba[sg], rgba[sb], &yuva[Y], &yuva[U], &yuva[V]); + yuva[3] = rgba[sa]; + } + + blend_plane_8_8bits(ctx, dst, area, yuvpal, src_w, src_h, dst_w, dst_h, Y, 0, 0, x, y, s->main_desc->comp[Y].plane, s->main_desc->comp[Y].offset, s->main_desc->comp[Y].step); + blend_plane_8_8bits(ctx, dst, area, yuvpal, src_w, src_h, dst_w, dst_h, U, hsub, vsub, x, y, s->main_desc->comp[U].plane, s->main_desc->comp[U].offset, s->main_desc->comp[U].step); + blend_plane_8_8bits(ctx, dst, area, yuvpal, src_w, src_h, dst_w, dst_h, V, hsub, vsub, x, y, s->main_desc->comp[V].plane, s->main_desc->comp[V].offset, s->main_desc->comp[V].step); +} + +static int config_input_main(AVFilterLink *inlink) +{ + int ret; + AVFilterContext *ctx = inlink->dst; + OverlaySubsContext *s = inlink->dst->priv; + const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format); + + av_image_fill_max_pixsteps(s->main_pix_step, NULL, pix_desc); + ff_fill_rgba_map(s->overlay_rgba_map, AV_PIX_FMT_RGB32); // it's actually AV_PIX_FMT_PAL8); + + s->hsub = pix_desc->log2_chroma_w; + s->vsub = pix_desc->log2_chroma_h; + + s->main_desc = pix_desc; + + s->main_is_packed_rgb = ff_fill_rgba_map(s->main_rgba_map, inlink->format) >= 0; + s->main_has_alpha = !!(pix_desc->flags & AV_PIX_FMT_FLAG_ALPHA); + + /* Finish the configuration by evaluating the expressions + now when both inputs are configured. */ + s->var_values[VAR_MAIN_W ] = s->var_values[VAR_MW] = ctx->inputs[MAIN ]->w; + s->var_values[VAR_MAIN_H ] = s->var_values[VAR_MH] = ctx->inputs[MAIN ]->h; + s->var_values[VAR_OVERLAY_W] = s->var_values[VAR_OW] = ctx->inputs[OVERLAY]->w; + s->var_values[VAR_OVERLAY_H] = s->var_values[VAR_OH] = ctx->inputs[OVERLAY]->h; + s->var_values[VAR_HSUB] = 1<log2_chroma_w; + s->var_values[VAR_VSUB] = 1<log2_chroma_h; + s->var_values[VAR_X] = NAN; + s->var_values[VAR_Y] = NAN; + s->var_values[VAR_N] = 0; + s->var_values[VAR_T] = NAN; + s->var_values[VAR_POS] = NAN; + + if ((ret = set_expr(&s->x_pexpr, s->x_expr, "x", ctx)) < 0 || + (ret = set_expr(&s->y_pexpr, s->y_expr, "y", ctx)) < 0) + return ret; + + if (s->eval_mode == EVAL_MODE_INIT) { + eval_expr(ctx); + av_log(ctx, AV_LOG_VERBOSE, "x:%f xi:%d y:%f yi:%d\n", + s->var_values[VAR_X], s->x, + s->var_values[VAR_Y], s->y); + } + + av_log(ctx, AV_LOG_VERBOSE, + "main w:%d h:%d fmt:%s overlay w:%d h:%d fmt:%s\n", + ctx->inputs[MAIN]->w, ctx->inputs[MAIN]->h, + av_get_pix_fmt_name(ctx->inputs[MAIN]->format), + ctx->inputs[OVERLAY]->w, ctx->inputs[OVERLAY]->h, + av_get_pix_fmt_name(ctx->inputs[OVERLAY]->format)); + return 0; +} + +static int do_blend(FFFrameSync *fs) +{ + AVFilterContext *ctx = fs->parent; + AVFrame *mainpic, *second; + OverlaySubsContext *s = ctx->priv; + AVFilterLink *inlink = ctx->inputs[0]; + unsigned i; + int ret; + + ret = ff_framesync_dualinput_get_writable(fs, &mainpic, &second); + if (ret < 0) + return ret; + if (!second) + return ff_filter_frame(ctx->outputs[0], mainpic); + + if (s->eval_mode == EVAL_MODE_FRAME) { + int64_t pos = mainpic->pkt_pos; + + s->var_values[VAR_N] = (double)inlink->frame_count_out; + s->var_values[VAR_T] = mainpic->pts == AV_NOPTS_VALUE ? + NAN :(double)mainpic->pts * av_q2d(inlink->time_base); + s->var_values[VAR_POS] = pos == -1 ? NAN : (double)pos; + + s->var_values[VAR_OVERLAY_W] = s->var_values[VAR_OW] = second->width; + s->var_values[VAR_OVERLAY_H] = s->var_values[VAR_OH] = second->height; + s->var_values[VAR_MAIN_W ] = s->var_values[VAR_MW] = mainpic->width; + s->var_values[VAR_MAIN_H ] = s->var_values[VAR_MH] = mainpic->height; + + eval_expr(ctx); + av_log(ctx, AV_LOG_DEBUG, "n:%f t:%f pos:%f x:%f xi:%d y:%f yi:%d\n", + s->var_values[VAR_N], s->var_values[VAR_T], s->var_values[VAR_POS], + s->var_values[VAR_X], s->x, + s->var_values[VAR_Y], s->y); + } + + for (i = 0; i < second->num_subtitle_areas; i++) { + const AVSubtitleArea *sub_area = second->subtitle_areas[i]; + + if (sub_area->type != AV_SUBTITLE_FMT_BITMAP) { + av_log(NULL, AV_LOG_WARNING, "overlay_graphicsubs: non-bitmap subtitle\n"); + return AVERROR_INVALIDDATA; + } + + switch (inlink->format) { + case AV_PIX_FMT_YUV420P: + blend_yuv_8_8bits(ctx, mainpic, sub_area, 1, 1, sub_area->x + s->x, sub_area->y + s->y); + break; + case AV_PIX_FMT_YUV422P: + blend_yuv_8_8bits(ctx, mainpic, sub_area, 1, 0, sub_area->x + s->x, sub_area->y + s->y); + break; + case AV_PIX_FMT_YUV444P: + blend_yuv_8_8bits(ctx, mainpic, sub_area, 0, 0, sub_area->x + s->x, sub_area->y + s->y); + break; + case AV_PIX_FMT_RGB24: + case AV_PIX_FMT_BGR24: + case AV_PIX_FMT_ARGB: + case AV_PIX_FMT_RGBA: + case AV_PIX_FMT_BGRA: + case AV_PIX_FMT_ABGR: + blend_packed_rgb(ctx, mainpic, sub_area, sub_area->x + s->x, sub_area->y + s->y, 1); + break; + default: + av_log(NULL, AV_LOG_ERROR, "Unsupported input pix fmt: %d\n", inlink->format); + return AVERROR(EINVAL); + } + } + + return ff_filter_frame(ctx->outputs[0], mainpic); +} + +static av_cold int overlay_graphicsubs_init(AVFilterContext *ctx) +{ + OverlaySubsContext *s = ctx->priv; + + s->fs.on_event = do_blend; + return 0; +} + +static int overlay_graphicsubs_activate(AVFilterContext *ctx) +{ + OverlaySubsContext *s = ctx->priv; + return ff_framesync_activate(&s->fs); +} + +static int graphicsub2video_query_formats(AVFilterContext *ctx) +{ + AVFilterFormats *formats; + AVFilterLink *inlink = ctx->inputs[0]; + AVFilterLink *outlink = ctx->outputs[0]; + static const enum AVSubtitleType subtitle_fmts[] = { AV_SUBTITLE_FMT_BITMAP, AV_SUBTITLE_FMT_NONE }; + static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE }; + int ret; + + /* set input subtitle formats */ + formats = ff_make_format_list(subtitle_fmts); + if ((ret = ff_formats_ref(formats, &inlink->outcfg.formats)) < 0) + return ret; + + /* set output video formats */ + formats = ff_make_format_list(pix_fmts); + if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0) + return ret; + + return 0; +} + +static int graphicsub2video_config_input(AVFilterLink *inlink) +{ + AVFilterContext *ctx = inlink->dst; + OverlaySubsContext *s = ctx->priv; + + if (s->w <= 0 || s->h <= 0) { + s->w = inlink->w; + s->h = inlink->h; + } + return 0; +} + +static int graphicsub2video_config_output(AVFilterLink *outlink) +{ + const AVFilterContext *ctx = outlink->src; + OverlaySubsContext *s = ctx->priv; + const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(outlink->format); + + outlink->w = s->w; + outlink->h = s->h; + + if (outlink->w == 0 && outlink->h == 0) { + outlink->w = 1; + outlink->h = 1; + } + outlink->sample_aspect_ratio = (AVRational){1,1}; + outlink->time_base = ctx->inputs[0]->time_base; + outlink->frame_rate = ctx->inputs[0]->frame_rate; + + av_image_fill_max_pixsteps(s->main_pix_step, NULL, pix_desc); + ff_fill_rgba_map(s->overlay_rgba_map, AV_PIX_FMT_RGB32); + + s->hsub = pix_desc->log2_chroma_w; + s->vsub = pix_desc->log2_chroma_h; + + s->main_desc = pix_desc; + + s->main_is_packed_rgb = ff_fill_rgba_map(s->main_rgba_map, outlink->format) >= 0; + s->main_has_alpha = !!(pix_desc->flags & AV_PIX_FMT_FLAG_ALPHA); + + return 0; +} + +static int graphicsub2video_filter_frame(AVFilterLink *inlink, AVFrame *frame) +{ + AVFilterLink *outlink = inlink->dst->outputs[0]; + const AVFilterContext *ctx = outlink->src; + OverlaySubsContext *s = ctx->priv; + AVFrame *out; + const unsigned num_rects = frame->num_subtitle_areas; + unsigned int i; + int ret; + + if (s->use_caching && s->cache_frame && frame->repeat_sub + && s->cache_frame->subtitle_timing.start_pts == frame->subtitle_timing.start_pts) { + out = av_frame_clone(s->cache_frame); + if (!out) + return AVERROR(ENOMEM); + + ret = av_frame_copy_props(out, frame); + if (ret < 0) + return ret; + + av_log(inlink->dst, AV_LOG_DEBUG, "graphicsub2video CACHED - size %dx%d pts: %"PRId64" areas: %d\n", frame->width, frame->height, frame->subtitle_timing.start_pts, frame->num_subtitle_areas); + av_frame_free(&frame); + return ff_filter_frame(outlink, out); + } + + + out = ff_get_video_buffer(outlink, outlink->w, outlink->h); + if (!out) { + av_frame_free(&frame); + return AVERROR(ENOMEM); + } + + memset(out->data[0], 0, (size_t)out->linesize[0] * out->height); + + out->pts = out->pkt_dts = out->best_effort_timestamp = frame->pts; + out->coded_picture_number = out->display_picture_number = s->pic_counter++; + + for (i = 0; i < num_rects; i++) { + const AVSubtitleArea *sub_rect = frame->subtitle_areas[i]; + + if (sub_rect->type != AV_SUBTITLE_FMT_BITMAP) { + av_log(NULL, AV_LOG_WARNING, "graphicsub2video: non-bitmap subtitle\n"); + av_frame_free(&frame); + return AVERROR_INVALIDDATA; + } + + blend_packed_rgb(inlink->dst, out, sub_rect, sub_rect->x, sub_rect->y, 1); + } + + av_log(inlink->dst, AV_LOG_DEBUG, "graphicsub2video output - size %dx%d pts: %"PRId64" areas: %d\n", out->width, out->height, out->pts, frame->num_subtitle_areas); + + if (s->use_caching) { + av_frame_free(&s->cache_frame); + s->cache_frame = av_frame_clone(out); + } + + av_frame_free(&frame); + return ff_filter_frame(outlink, out); +} + +#define OFFSET(x) offsetof(OverlaySubsContext, x) +#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM) + +static const AVOption overlaygraphicsubs_options[] = { + { "x", "set the x expression", OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, 0, .flags = FLAGS }, + { "y", "set the y expression", OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, 0, .flags = FLAGS }, + { "eof_action", "Action to take when encountering EOF from secondary input ", + OFFSET(fs.opt_eof_action), AV_OPT_TYPE_INT, { .i64 = EOF_ACTION_REPEAT }, + EOF_ACTION_REPEAT, EOF_ACTION_PASS, .flags = FLAGS, "eof_action" }, + { "repeat", "Repeat the previous frame.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_REPEAT }, .flags = FLAGS, "eof_action" }, + { "endall", "End both streams.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_ENDALL }, .flags = FLAGS, "eof_action" }, + { "pass", "Pass through the main input.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_PASS }, .flags = FLAGS, "eof_action" }, + { "eval", "specify when to evaluate expressions", OFFSET(eval_mode), AV_OPT_TYPE_INT, {.i64 = EVAL_MODE_FRAME}, 0, EVAL_MODE_NB-1, FLAGS, "eval" }, + { "init", "eval expressions once during initialization", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_INIT}, .flags = FLAGS, .unit = "eval" }, + { "frame", "eval expressions per-frame", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_FRAME}, .flags = FLAGS, .unit = "eval" }, + { "shortest", "force termination when the shortest input terminates", OFFSET(fs.opt_shortest), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, .flags = FLAGS }, + { "repeatlast", "repeat overlay of the last overlay frame", OFFSET(fs.opt_repeatlast), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, .flags = FLAGS }, + { NULL } +}; + +static const AVOption graphicsub2video_options[] = { + { "size", "set output frame size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, .flags = FLAGS }, + { "s", "set output frame size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, .flags = FLAGS }, + { "use_caching", "Cache output frames", OFFSET(use_caching), AV_OPT_TYPE_BOOL, { .i64 = 1}, 0, 1, .flags = FLAGS }, + { NULL } +}; + +FRAMESYNC_DEFINE_CLASS(overlaygraphicsubs, OverlaySubsContext, fs); + +static const AVFilterPad overlaygraphicsubs_inputs[] = { + { + .name = "main", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_input_main, + .flags = AVFILTERPAD_FLAG_NEEDS_WRITABLE, + }, + { + .name = "overlay", + .type = AVMEDIA_TYPE_SUBTITLE, + }, +}; + +static const AVFilterPad overlaygraphicsubs_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_output, + }, +}; + +const AVFilter ff_vf_overlaygraphicsubs = { + .name = "overlaygraphicsubs", + .description = NULL_IF_CONFIG_SMALL("Overlay graphical subtitles on top of the input."), + .preinit = overlaygraphicsubs_framesync_preinit, + .init = overlay_graphicsubs_init, + .uninit = overlay_graphicsubs_uninit, + .priv_size = sizeof(OverlaySubsContext), + .priv_class = &overlaygraphicsubs_class, + .activate = overlay_graphicsubs_activate, + FILTER_INPUTS(overlaygraphicsubs_inputs), + FILTER_OUTPUTS(overlaygraphicsubs_outputs), + FILTER_QUERY_FUNC(overlay_graphicsubs_query_formats), +}; + +AVFILTER_DEFINE_CLASS(graphicsub2video); + +static const AVFilterPad graphicsub2video_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .filter_frame = graphicsub2video_filter_frame, + .config_props = graphicsub2video_config_input, + }, +}; + +static const AVFilterPad graphicsub2video_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = graphicsub2video_config_output, + }, +}; + +const AVFilter ff_svf_graphicsub2video = { + .name = "graphicsub2video", + .description = NULL_IF_CONFIG_SMALL("Convert graphical subtitles to video"), + .priv_size = sizeof(OverlaySubsContext), + .priv_class = &graphicsub2video_class, + FILTER_INPUTS(graphicsub2video_inputs), + FILTER_OUTPUTS(graphicsub2video_outputs), + FILTER_QUERY_FUNC(graphicsub2video_query_formats), +}; diff --git a/libavfilter/vf_overlaytextsubs.c b/libavfilter/vf_overlaytextsubs.c new file mode 100644 index 0000000000000..1e43289bec6c0 --- /dev/null +++ b/libavfilter/vf_overlaytextsubs.c @@ -0,0 +1,680 @@ +/* + * Copyright (c) 2021 softworkz + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * overlay text subtitles on top of a video frame + */ + +#include "config_components.h" + +#include +#include "libavutil/ass_internal.h" +#include "libavutil/thread.h" + +#include "drawutils.h" +#include "filters.h" + +#include "libavutil/opt.h" +#include "libavutil/pixdesc.h" + +typedef struct TextSubsContext { + const AVClass *class; + AVMutex mutex; + int is_mutex_initialized; + + ASS_Library *library; + ASS_Renderer *renderer; + ASS_Track *track; + + char *default_font_path; + char *fonts_dir; + char *fc_file; + double font_size; + char *force_style; + char *language; + int margin; + int render_latest_only; + + int alpha; + FFDrawContext draw; + + int got_header; + int out_w, out_h; + AVRational frame_rate; + AVFrame *last_frame; + int need_frame; + int eof; +} TextSubsContext; + +/* libass supports a log level ranging from 0 to 7 */ +static const int ass_libavfilter_log_level_map[] = { + AV_LOG_QUIET, /* 0 */ + AV_LOG_PANIC, /* 1 */ + AV_LOG_FATAL, /* 2 */ + AV_LOG_ERROR, /* 3 */ + AV_LOG_WARNING, /* 4 */ + AV_LOG_INFO, /* 5 */ + AV_LOG_VERBOSE, /* 6 */ + AV_LOG_DEBUG, /* 7 */ +}; + +static void ass_log(int ass_level, const char *fmt, va_list args, void *ctx) +{ + const int ass_level_clip = av_clip(ass_level, 0, FF_ARRAY_ELEMS(ass_libavfilter_log_level_map) - 1); + const int level = ass_libavfilter_log_level_map[ass_level_clip]; + + av_vlog(ctx, level, fmt, args); + av_log(ctx, level, "\n"); +} + +static av_cold void uninit(AVFilterContext *ctx) +{ + TextSubsContext *s = ctx->priv; + + if (s->track) + ass_free_track(s->track); + if (s->renderer) + ass_renderer_done(s->renderer); + if (s->library) + ass_library_done(s->library); + + s->track = NULL; + s->renderer = NULL; + s->library = NULL; + + if (s->is_mutex_initialized) { + ff_mutex_destroy(&s->mutex); + s->is_mutex_initialized = 0; + } + + av_frame_free(&s->last_frame); +} + +static int overlay_textsubs_query_formats(AVFilterContext *ctx) +{ + AVFilterFormats *formats; + AVFilterLink *inlink0 = ctx->inputs[0]; + AVFilterLink *inlink1 = ctx->inputs[1]; + AVFilterLink *outlink = ctx->outputs[0]; + static const enum AVSubtitleType subtitle_fmts[] = { AV_SUBTITLE_FMT_ASS, AV_SUBTITLE_FMT_NONE }; + int ret; + + /* set input0 and output0 video formats */ + formats = ff_draw_supported_pixel_formats(0); + if ((ret = ff_formats_ref(formats, &inlink0->outcfg.formats)) < 0) + return ret; + if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0) + return ret; + + /* set input1 subtitle formats */ + formats = ff_make_format_list(subtitle_fmts); + if ((ret = ff_formats_ref(formats, &inlink1->outcfg.formats)) < 0) + return ret; + + return 0; +} + +static int config_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + + outlink->w = ctx->inputs[0]->w; + outlink->h = ctx->inputs[0]->h; + outlink->time_base = ctx->inputs[0]->time_base; + outlink->frame_rate = ctx->inputs[0]->frame_rate; + + return 0; +} + +static int config_input_main(AVFilterLink *inlink) +{ + AVFilterContext *ctx = inlink->dst; + TextSubsContext *s = inlink->dst->priv; + int ret; + + ret = ff_draw_init(&s->draw, inlink->format, s->alpha ? FF_DRAW_PROCESS_ALPHA : 0); + if (ret < 0) { + av_log(ctx, AV_LOG_ERROR, "Could not initialize ff_draw.\n"); + return ret; + } + + ass_set_frame_size (s->renderer, inlink->w, inlink->h); + ass_set_pixel_aspect(s->renderer, av_q2d(inlink->sample_aspect_ratio)); + + av_log(ctx, AV_LOG_VERBOSE, "Subtitle screen: %dx%d\n\n\n\n", inlink->w, inlink->h); + + return 0; +} + +/* libass stores an RGBA color in the format RRGGBBTT, where TT is the transparency level */ +#define AR(c) ( (c)>>24) +#define AG(c) (((c)>>16)&0xFF) +#define AB(c) (((c)>>8) &0xFF) +#define AA(c) ((0xFF-(c)) &0xFF) + +static void overlay_ass_image(TextSubsContext *s, AVFrame *picref, + const ASS_Image *image) +{ + for (; image; image = image->next) { + uint8_t rgba_color[] = {AR(image->color), AG(image->color), AB(image->color), AA(image->color)}; + FFDrawColor color; + ff_draw_color(&s->draw, &color, rgba_color); + ff_blend_mask(&s->draw, &color, + picref->data, picref->linesize, + picref->width, picref->height, + image->bitmap, image->stride, image->w, image->h, + 3, 0, image->dst_x, image->dst_y); + } +} + +static void process_header(AVFilterContext *link, AVFrame *frame) +{ + TextSubsContext *s = link->priv; + ASS_Track *track = s->track; + ASS_Style *style; + int sid = 0; + + if (!track) + return; + + if (frame && frame->subtitle_header) { + char *subtitle_header = (char *)frame->subtitle_header->data; + ass_process_codec_private(s->track, subtitle_header, strlen(subtitle_header)); + } + else { + char* subtitle_header = avpriv_ass_get_subtitle_header_default(0); + if (!subtitle_header) + return; + + ass_process_codec_private(s->track, subtitle_header, strlen(subtitle_header)); + av_free(subtitle_header); + } + + if (s->language) + s->track->Language = av_strdup(s->language); + + if (!s->track->event_format) { + s->track->event_format = av_strdup("ReadOrder, Layer, Style, Name, MarginL, MarginR, MarginV, Effect, Text"); + } + + if (s->track->n_styles == 0) { + sid = ass_alloc_style(track); + style = &s->track->styles[sid]; + style->Name = av_strdup("Default"); + style->PrimaryColour = 0xffffff00; + style->SecondaryColour = 0x00ffff00; + style->OutlineColour = 0x00000000; + style->BackColour = 0x00000080; + style->Bold = 200; + style->ScaleX = 1.0; + style->ScaleY = 1.0; + style->Spacing = 0; + style->BorderStyle = 1; + style->Outline = 2; + style->Shadow = 3; + style->Alignment = 2; + } + else + style = &s->track->styles[sid]; + + style->FontSize = s->font_size; + style->MarginL = style->MarginR = style->MarginV = s->margin; + + track->default_style = sid; + + s->got_header = 1; +} + +static int filter_video_frame(AVFilterLink *inlink, AVFrame *frame) +{ + AVFilterContext *ctx = inlink->dst; + TextSubsContext *s = ctx->priv; + int detect_change = 0; + ASS_Image *image; + + + int64_t time_ms = (int64_t)((double)frame->pts * av_q2d(inlink->time_base) * 1000); + int64_t time_ms1 = (int64_t)((double)ctx->inputs[1]->current_pts * av_q2d(ctx->inputs[1]->time_base) * 1000); + + if (time_ms1 < time_ms + 1000) + ff_request_frame(ctx->inputs[1]); + + av_log(ctx, AV_LOG_DEBUG, "filter_video_frame - video: %"PRId64"ms sub: %"PRId64"ms rel %d\n", time_ms, time_ms1, (time_ms1 < time_ms)); + + ff_mutex_lock(&s->mutex); + image = ass_render_frame(s->renderer, s->track, time_ms, &detect_change); + ff_mutex_unlock(&s->mutex); + + if (detect_change) + av_log(ctx, AV_LOG_DEBUG, "Change happened at time ms:%"PRId64"\n", time_ms); + + overlay_ass_image(s, frame, image); + + return ff_filter_frame(ctx->outputs[0], frame); +} + +static int filter_subtitle_frame(AVFilterLink *inlink, AVFrame *frame) +{ + AVFilterContext *ctx = inlink->dst; + TextSubsContext *s = ctx->priv; + const int64_t start_time = av_rescale_q(frame->subtitle_timing.start_pts, AV_TIME_BASE_Q, av_make_q(1, 1000)); + const int64_t duration = av_rescale_q(frame->subtitle_timing.duration, AV_TIME_BASE_Q, av_make_q(1, 1000)); + const int64_t frame_time = (int64_t)((double)frame->pts * av_q2d(inlink->time_base) * 1000); + + // Postpone header processing until we receive a frame with content + if (!s->got_header && frame->num_subtitle_areas > 0) + process_header(ctx, frame); + + av_log(ctx, AV_LOG_DEBUG, "filter_subtitle_frame dur: %"PRId64"ms frame: %"PRId64"ms sub: %"PRId64"ms repeat_sub %d\n", duration, frame_time, start_time, frame->repeat_sub); + + if (frame->repeat_sub) + goto exit; + + ff_mutex_lock(&s->mutex); + + if (s->render_latest_only && s->track->n_events > 0) { + const int64_t previous_start_time = s->track->events[s->track->n_events - 1].Start; + const int64_t diff = start_time - previous_start_time; + for (int i = s->track->n_events - 1; i >= 0; i--) { + if (previous_start_time != s->track->events[i].Start) + break; + + if (s->track->events[i].Duration > diff) + s->track->events[i].Duration = diff; + } + } + + for (unsigned i = 0; i < frame->num_subtitle_areas; i++) { + char *ass_line = frame->subtitle_areas[i]->ass; + if (!ass_line) + continue; + + ass_process_chunk(s->track, ass_line, strlen(ass_line), start_time, duration); + } + + ff_mutex_unlock(&s->mutex); + +exit: + av_frame_free(&frame); + return 0; +} + +static av_cold int init(AVFilterContext *ctx) +{ + int ret; + TextSubsContext *s = ctx->priv; + + s->library = ass_library_init(); + + if (!s->library) { + av_log(ctx, AV_LOG_ERROR, "Could not initialize libass.\n"); + return AVERROR(EINVAL); + } + + ass_set_message_cb(s->library, ass_log, ctx); + + /* Initialize fonts */ + if (s->fonts_dir) + ass_set_fonts_dir(s->library, s->fonts_dir); + + ass_set_extract_fonts(s->library, 1); + + s->renderer = ass_renderer_init(s->library); + if (!s->renderer) { + av_log(ctx, AV_LOG_ERROR, "Could not initialize libass renderer.\n"); + return AVERROR(EINVAL); + } + + s->track = ass_new_track(s->library); + if (!s->track) { + av_log(ctx, AV_LOG_ERROR, "ass_new_track() failed!\n"); + return AVERROR(EINVAL); + } + + ass_set_check_readorder(s->track, 0); + + ass_set_fonts(s->renderer, s->default_font_path, NULL, 1, s->fc_file, 1); + + if (s->force_style) { + char **list = NULL; + char *temp = NULL; + char *ptr = av_strtok(s->force_style, ",", &temp); + int i = 0; + while (ptr) { + av_dynarray_add(&list, &i, ptr); + if (!list) { + return AVERROR(ENOMEM); + } + ptr = av_strtok(NULL, ",", &temp); + } + av_dynarray_add(&list, &i, NULL); + if (!list) { + return AVERROR(ENOMEM); + } + ass_set_style_overrides(s->library, list); + av_free(list); + } + + ret = ff_mutex_init(&s->mutex, NULL); + if (ret) { + av_log(ctx, AV_LOG_ERROR, "mutex initialiuzation failed! Error code: %d\n", ret); + return AVERROR(EINVAL); + } + + s->is_mutex_initialized = 1; + + return ret; +} + +static int textsub2video_query_formats(AVFilterContext *ctx) +{ + AVFilterFormats *formats; + AVFilterLink *inlink = ctx->inputs[0]; + AVFilterLink *outlink = ctx->outputs[0]; + static const enum AVSubtitleType subtitle_fmts[] = { AV_SUBTITLE_FMT_ASS, AV_SUBTITLE_FMT_NONE }; + int ret; + + /* set input0 subtitle format */ + formats = ff_make_format_list(subtitle_fmts); + if ((ret = ff_formats_ref(formats, &inlink->outcfg.formats)) < 0) + return ret; + + /* set output0 video format */ + formats = ff_draw_supported_pixel_formats(AV_PIX_FMT_FLAG_ALPHA); + if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0) + return ret; + + return 0; +} + +static int textsub2video_config_input(AVFilterLink *inlink) +{ + AVFilterContext *ctx = inlink->dst; + TextSubsContext *s = ctx->priv; + + if (s->out_w <= 0 || s->out_h <= 0) { + s->out_w = inlink->w; + s->out_h = inlink->h; + } + + return 0; +} + +static int textsub2video_config_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + TextSubsContext *s = ctx->priv; + int ret; + + ret = ff_draw_init(&s->draw, outlink->format, FF_DRAW_PROCESS_ALPHA); + if (ret < 0) { + av_log(ctx, AV_LOG_ERROR, "Could not initialize ff_draw.\n"); + return ret; + } + + if (s->out_w <= 0 || s->out_h <= 0) { + av_log(ctx, AV_LOG_ERROR, "No output image size set.\n"); + return AVERROR(EINVAL); + } + + ass_set_frame_size (s->renderer, s->out_w, s->out_h); + + outlink->w = s->out_w; + outlink->h = s->out_h; + outlink->sample_aspect_ratio = (AVRational){1,1}; + outlink->frame_rate = s->frame_rate; + + return 0; +} + +static int textsub2video_request_frame(AVFilterLink *outlink) +{ + TextSubsContext *s = outlink->src->priv; + AVFilterLink *inlink = outlink->src->inputs[0]; + int64_t last_pts = outlink->current_pts; + int64_t next_pts, time_ms; + int i, detect_change = 0, status; + AVFrame *out; + ASS_Image *image; + + status = ff_outlink_get_status(inlink); + if (status == AVERROR_EOF) + return AVERROR_EOF; + + if (s->eof) + return AVERROR_EOF; + + if (inlink->current_pts == AV_NOPTS_VALUE) { // || outlink->current_pts > inlink->current_pts) { + int ret = ff_request_frame(inlink); + if (ret == AVERROR_EOF) { + s->eof = 1; + } + + if (ret != 0) + av_log(outlink->src, AV_LOG_DEBUG, "ff_request_frame returned: %d\n", ret); + + s->need_frame = 1; + return 0; + } + + if (last_pts == AV_NOPTS_VALUE) + next_pts = last_pts = inlink->current_pts * av_q2d(inlink->time_base) / av_q2d(outlink->time_base); + else + next_pts = last_pts + (int64_t)(1.0 / av_q2d(outlink->frame_rate) / av_q2d(outlink->time_base)); + + time_ms = (int64_t)((double)next_pts * av_q2d(outlink->time_base) * 1000); + + ff_mutex_lock(&s->mutex); + image = ass_render_frame(s->renderer, s->track, time_ms, &detect_change); + ff_mutex_unlock(&s->mutex); + + if (detect_change) + av_log(outlink->src, AV_LOG_VERBOSE, "Change happened at time ms:%"PRId64" pts:%"PRId64"\n", time_ms, next_pts); + else if (s->last_frame) { + out = av_frame_clone(s->last_frame); + if (!out) + return AVERROR(ENOMEM); + + out->pts = out->pkt_dts = out->best_effort_timestamp = next_pts; + return ff_filter_frame(outlink, out); + } + + out = ff_get_video_buffer(outlink, outlink->w, outlink->h); + if (!out) + return AVERROR(ENOMEM); + + for (i = 0; i < AV_NUM_DATA_POINTERS; i++) { + if (out->buf[i] && i != 1) + memset(out->buf[i]->data, 0, out->buf[i]->size); + } + + out->pts = out->pkt_dts = out->best_effort_timestamp = next_pts; + + if (image) + overlay_ass_image(s, out, image); + + av_frame_free(&s->last_frame); + + s->last_frame = av_frame_clone(out); + + return ff_filter_frame(outlink, out); +} + +static int textsub2video_filter_frame(AVFilterLink *inlink, AVFrame *frame) +{ + AVFilterContext *ctx = inlink->dst; + TextSubsContext *s = ctx->priv; + const int64_t start_time = av_rescale_q(frame->subtitle_timing.start_pts, AV_TIME_BASE_Q, av_make_q(1, 1000)); + const int64_t duration = av_rescale_q(frame->subtitle_timing.duration, AV_TIME_BASE_Q, av_make_q(1, 1000)); + + av_log(ctx, AV_LOG_VERBOSE, "textsub2video_filter_frame num_subtitle_rects: %d, start_time_ms: %"PRId64"\n", frame->num_subtitle_areas, start_time); + + if (!s->got_header && frame->num_subtitle_areas > 0) + process_header(ctx, frame); + + if (frame->repeat_sub) + goto exit; + + ff_mutex_lock(&s->mutex); + + if (s->render_latest_only && s->track->n_events > 0) { + const int64_t previous_start_time = s->track->events[s->track->n_events - 1].Start; + const int64_t diff = start_time - previous_start_time; + for (int i = s->track->n_events - 1; i >= 0; i--) { + if (previous_start_time != s->track->events[i].Start) + break; + + if (s->track->events[i].Duration > diff) + s->track->events[i].Duration = diff; + + } + } + + for (unsigned i = 0; i < frame->num_subtitle_areas; i++) { + char *ass_line = frame->subtitle_areas[i]->ass; + if (!ass_line) + continue; + + ass_process_chunk(s->track, ass_line, strlen(ass_line), start_time, duration); + } + + + ff_mutex_unlock(&s->mutex); + +exit: + av_frame_free(&frame); + + if (s->need_frame) { + s->need_frame = 0; + return textsub2video_request_frame(ctx->outputs[0]); + } + + return 0; +} + +#define OFFSET(x) offsetof(TextSubsContext, x) +#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM) + +static const AVOption overlaytextsubs_options[] = { + {"alpha", "enable processing of alpha channel", OFFSET(alpha), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, .flags = FLAGS}, + {"font_size", "default font size", OFFSET(font_size), AV_OPT_TYPE_DOUBLE, {.dbl = 18.0}, 0.0, 100.0, .flags = FLAGS}, + {"force_style", "force subtitle style", OFFSET(force_style), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, .flags = FLAGS}, + {"margin", "default margin", OFFSET(margin), AV_OPT_TYPE_INT, {.i64 = 20 }, 0, INT_MAX, .flags = FLAGS}, + {"default_font_path", "path to default font", OFFSET(default_font_path), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, .flags = FLAGS}, + {"fonts_dir", "directory to scan for fonts", OFFSET(fonts_dir), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, .flags = FLAGS}, + {"fontsdir", "directory to scan for fonts", OFFSET(fonts_dir), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, .flags = FLAGS}, + {"fontconfig_file", "fontconfig file to load", OFFSET(fc_file), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, .flags = FLAGS}, + {"language", "default language", OFFSET(language), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, .flags = FLAGS}, + {"render_latest_only", "newest sub event for each time", OFFSET(render_latest_only), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, .flags = FLAGS}, + { .name = NULL } +}; + +static const AVOption textsub2video_options[] = { + {"rate", "set frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="8"}, 0, INT_MAX, .flags = FLAGS}, + {"r", "set frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="8"}, 0, INT_MAX, .flags = FLAGS}, + {"size", "set video size", OFFSET(out_w), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, .flags = FLAGS}, + {"s", "set video size", OFFSET(out_w), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, .flags = FLAGS}, + {"font_size", "default font size", OFFSET(font_size), AV_OPT_TYPE_DOUBLE, {.dbl = 18.0}, 0.0, 100.0, .flags = FLAGS}, + {"force_style", "force subtitle style", OFFSET(force_style), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, .flags = FLAGS}, + {"margin", "default margin", OFFSET(margin), AV_OPT_TYPE_INT, {.i64 = 20 }, 0, INT_MAX, .flags = FLAGS}, + {"default_font_path", "path to default font", OFFSET(default_font_path), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, .flags = FLAGS}, + {"fonts_dir", "directory to scan for fonts", OFFSET(fonts_dir), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, .flags = FLAGS}, + {"fontsdir", "directory to scan for fonts", OFFSET(fonts_dir), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, .flags = FLAGS}, + {"fontconfig_file", "fontconfig file to load", OFFSET(fc_file), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, .flags = FLAGS}, + {"language", "default language", OFFSET(language), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, .flags = FLAGS}, + {"render_latest_only", "newest sub event for each time", OFFSET(render_latest_only), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, .flags = FLAGS}, + { .name = NULL } +}; + +#if CONFIG_OVERLAYTEXTSUBS_FILTER + +AVFILTER_DEFINE_CLASS(overlaytextsubs); + +static const AVFilterPad overlaytextsubs_inputs[] = { + { + .name = "main", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_input_main, + .flags = AVFILTERPAD_FLAG_NEEDS_WRITABLE, + .filter_frame = filter_video_frame, + }, + { + .name = "overlay", + .type = AVMEDIA_TYPE_SUBTITLE, + .filter_frame = filter_subtitle_frame, + }, +}; + +static const AVFilterPad overlaytextsubs_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_output, + }, +}; + +const AVFilter ff_vf_overlaytextsubs = { + .name = "overlaytextsubs", + .description = NULL_IF_CONFIG_SMALL("Overlay textual subtitles on top of the input."), + .init = init, + .uninit = uninit, + .priv_size = sizeof(TextSubsContext), + .priv_class = &overlaytextsubs_class, + FILTER_INPUTS(overlaytextsubs_inputs), + FILTER_OUTPUTS(overlaytextsubs_outputs), + FILTER_QUERY_FUNC(overlay_textsubs_query_formats), +}; +#endif + +#if CONFIG_TEXTSUB2VIDEO_FILTER + +AVFILTER_DEFINE_CLASS(textsub2video); + +static const AVFilterPad textsub2video_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_SUBTITLE, + .config_props = textsub2video_config_input, + .filter_frame = textsub2video_filter_frame, + }, +}; + +static const AVFilterPad textsub2video_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = textsub2video_config_output, + .request_frame = textsub2video_request_frame, + }, +}; + +const AVFilter ff_svf_textsub2video = { + .name = "textsub2video", + .description = NULL_IF_CONFIG_SMALL("Convert textual subtitles to video frames"), + .init = init, + .uninit = uninit, + .priv_size = sizeof(TextSubsContext), + .priv_class = &textsub2video_class, + FILTER_INPUTS(textsub2video_inputs), + FILTER_OUTPUTS(textsub2video_outputs), + FILTER_QUERY_FUNC(textsub2video_query_formats), +}; +#endif diff --git a/libavfilter/vf_subtitles.c b/libavfilter/vf_subtitles.c index 82e140e9863b3..0ae156ad078e6 100644 --- a/libavfilter/vf_subtitles.c +++ b/libavfilter/vf_subtitles.c @@ -36,14 +36,12 @@ # include "libavformat/avformat.h" #endif #include "libavutil/avstring.h" -#include "libavutil/imgutils.h" #include "libavutil/opt.h" #include "libavutil/parseutils.h" #include "drawutils.h" #include "avfilter.h" #include "internal.h" #include "formats.h" -#include "video.h" typedef struct AssContext { const AVClass *class; @@ -304,8 +302,42 @@ static int attachment_is_font(AVStream * st) return 0; } +static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt) +{ + int ret; + + *got_frame = 0; + + if (pkt) { + ret = avcodec_send_packet(avctx, pkt); + // In particular, we don't expect AVERROR(EAGAIN), because we read all + // decoded frames with avcodec_receive_frame() until done. + if (ret < 0 && ret != AVERROR_EOF) + return ret; + } + + ret = avcodec_receive_frame(avctx, frame); + if (ret < 0 && ret != AVERROR(EAGAIN)) + return ret; + if (ret >= 0) + *got_frame = 1; + + return 0; +} + AVFILTER_DEFINE_CLASS(subtitles); +static enum AVSubtitleType get_subtitle_format(const AVCodecDescriptor *codec_descriptor) +{ + if(codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) + return AV_SUBTITLE_FMT_BITMAP; + + if(codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB) + return AV_SUBTITLE_FMT_ASS; + + return AV_SUBTITLE_FMT_UNKNOWN; +} + static av_cold int init_subtitles(AVFilterContext *ctx) { int j, ret, sid; @@ -318,6 +350,7 @@ static av_cold int init_subtitles(AVFilterContext *ctx) AVStream *st; AVPacket pkt; AssContext *ass = ctx->priv; + enum AVSubtitleType subtitle_format; /* Init libass */ ret = init(ctx); @@ -398,13 +431,17 @@ static av_cold int init_subtitles(AVFilterContext *ctx) ret = AVERROR_DECODER_NOT_FOUND; goto end; } + dec_desc = avcodec_descriptor_get(st->codecpar->codec_id); - if (dec_desc && !(dec_desc->props & AV_CODEC_PROP_TEXT_SUB)) { + subtitle_format = get_subtitle_format(dec_desc); + + if (subtitle_format != AV_SUBTITLE_FMT_ASS) { av_log(ctx, AV_LOG_ERROR, - "Only text based subtitles are currently supported\n"); - ret = AVERROR_PATCHWELCOME; + "Only text based subtitles are supported by this filter\n"); + ret = AVERROR_INVALIDDATA; goto end; } + if (ass->charenc) av_dict_set(&codec_opts, "sub_charenc", ass->charenc, 0); @@ -460,27 +497,31 @@ static av_cold int init_subtitles(AVFilterContext *ctx) dec_ctx->subtitle_header_size); while (av_read_frame(fmt, &pkt) >= 0) { int i, got_subtitle; - AVSubtitle sub = {0}; + AVFrame *sub = av_frame_alloc(); + if (!sub) { + ret = AVERROR(ENOMEM); + goto end; + } if (pkt.stream_index == sid) { - ret = avcodec_decode_subtitle2(dec_ctx, &sub, &got_subtitle, &pkt); + ret = decode(dec_ctx, sub, &got_subtitle, &pkt); if (ret < 0) { av_log(ctx, AV_LOG_WARNING, "Error decoding: %s (ignored)\n", av_err2str(ret)); } else if (got_subtitle) { - const int64_t start_time = av_rescale_q(sub.pts, AV_TIME_BASE_Q, av_make_q(1, 1000)); - const int64_t duration = sub.end_display_time; - for (i = 0; i < sub.num_rects; i++) { - char *ass_line = sub.rects[i]->ass; + const int64_t start_time = av_rescale_q(sub->subtitle_timing.start_pts, AV_TIME_BASE_Q, av_make_q(1, 1000)); + const int64_t duration = av_rescale_q(sub->subtitle_timing.duration, AV_TIME_BASE_Q, av_make_q(1, 1000)); + for (i = 0; i < sub->num_subtitle_areas; i++) { + char *ass_line = sub->subtitle_areas[i]->ass; if (!ass_line) - break; + continue; ass_process_chunk(ass->track, ass_line, strlen(ass_line), start_time, duration); } } } av_packet_unref(&pkt); - avsubtitle_free(&sub); + av_frame_free(&sub); } end: diff --git a/libavutil/Makefile b/libavutil/Makefile index 3d9c07aea87e1..0eba37447733c 100644 --- a/libavutil/Makefile +++ b/libavutil/Makefile @@ -77,6 +77,7 @@ HEADERS = adler32.h \ sha512.h \ spherical.h \ stereo3d.h \ + subfmt.h \ threadmessage.h \ time.h \ timecode.h \ @@ -102,6 +103,8 @@ BUILT_HEADERS = avconfig.h \ OBJS = adler32.o \ aes.o \ aes_ctr.o \ + ass.o \ + ass_split.o \ audio_fifo.o \ avstring.o \ avsscanf.o \ @@ -164,6 +167,7 @@ OBJS = adler32.o \ slicethread.o \ spherical.o \ stereo3d.o \ + subfmt.o \ threadmessage.o \ time.o \ timecode.o \ diff --git a/libavcodec/ass.c b/libavutil/ass.c similarity index 59% rename from libavcodec/ass.c rename to libavutil/ass.c index 728cfb1ab5b40..1a46f8d589c4b 100644 --- a/libavcodec/ass.c +++ b/libavutil/ass.c @@ -19,22 +19,23 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ -#include "avcodec.h" -#include "ass.h" +#include "ass_internal.h" + +#include "subfmt.h" #include "libavutil/avstring.h" #include "libavutil/bprint.h" #include "libavutil/common.h" #include "version.h" -int ff_ass_subtitle_header_full(AVCodecContext *avctx, - int play_res_x, int play_res_y, - const char *font, int font_size, - int primary_color, int secondary_color, - int outline_color, int back_color, - int bold, int italic, int underline, - int border_style, int alignment) +char* avpriv_ass_get_subtitle_header_full(int play_res_x, int play_res_y, + const char *font, int font_size, + int primary_color, int secondary_color, + int outline_color, int back_color, + int bold, int italic, int underline, + int border_style, int alignment, + int print_av_version) { - avctx->subtitle_header = av_asprintf( + char* header = av_asprintf( "[Script Info]\r\n" "; Script generated by FFmpeg/Lavc%s\r\n" "ScriptType: v4.00+\r\n" @@ -69,34 +70,31 @@ int ff_ass_subtitle_header_full(AVCodecContext *avctx, "\r\n" "[Events]\r\n" "Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text\r\n", - !(avctx->flags & AV_CODEC_FLAG_BITEXACT) ? AV_STRINGIFY(LIBAVCODEC_VERSION) : "", + print_av_version ? AV_STRINGIFY(LIBAVCODEC_VERSION) : "", play_res_x, play_res_y, font, font_size, primary_color, secondary_color, outline_color, back_color, -bold, -italic, -underline, border_style, alignment); - if (!avctx->subtitle_header) - return AVERROR(ENOMEM); - avctx->subtitle_header_size = strlen(avctx->subtitle_header); - return 0; + return header; } -int ff_ass_subtitle_header(AVCodecContext *avctx, - const char *font, int font_size, +char* avpriv_ass_get_subtitle_header(const char *font, int font_size, int color, int back_color, int bold, int italic, int underline, - int border_style, int alignment) + int border_style, int alignment, + int print_av_version) { - return ff_ass_subtitle_header_full(avctx, - ASS_DEFAULT_PLAYRESX, ASS_DEFAULT_PLAYRESY, - font, font_size, color, color, - back_color, back_color, - bold, italic, underline, - border_style, alignment); + return avpriv_ass_get_subtitle_header_full(ASS_DEFAULT_PLAYRESX, ASS_DEFAULT_PLAYRESY, + font, font_size, color, color, + back_color, back_color, + bold, italic, underline, + border_style, alignment, + print_av_version); } -int ff_ass_subtitle_header_default(AVCodecContext *avctx) +char* avpriv_ass_get_subtitle_header_default(int print_av_version) { - return ff_ass_subtitle_header(avctx, ASS_DEFAULT_FONT, + return avpriv_ass_get_subtitle_header(ASS_DEFAULT_FONT, ASS_DEFAULT_FONT_SIZE, ASS_DEFAULT_COLOR, ASS_DEFAULT_BACK_COLOR, @@ -104,10 +102,11 @@ int ff_ass_subtitle_header_default(AVCodecContext *avctx) ASS_DEFAULT_ITALIC, ASS_DEFAULT_UNDERLINE, ASS_DEFAULT_BORDERSTYLE, - ASS_DEFAULT_ALIGNMENT); + ASS_DEFAULT_ALIGNMENT, + print_av_version); } -char *ff_ass_get_dialog(int readorder, int layer, const char *style, +char *avpriv_ass_get_dialog(int readorder, int layer, const char *style, const char *speaker, const char *text) { return av_asprintf("%d,%d,%s,%s,0,0,0,,%s", @@ -115,61 +114,17 @@ char *ff_ass_get_dialog(int readorder, int layer, const char *style, speaker ? speaker : "", text); } -int ff_ass_add_rect2(AVSubtitle *sub, const char *dialog, - int readorder, int layer, const char *style, - const char *speaker, unsigned *nb_rect_allocated) -{ - AVSubtitleRect **rects = sub->rects, *rect; - char *ass_str; - uint64_t new_nb = 0; - - if (sub->num_rects >= UINT_MAX) - return AVERROR(ENOMEM); - - if (nb_rect_allocated && *nb_rect_allocated <= sub->num_rects) { - if (sub->num_rects < UINT_MAX / 17 * 16) { - new_nb = sub->num_rects + sub->num_rects/16 + 1; - } else - new_nb = UINT_MAX; - } else if (!nb_rect_allocated) - new_nb = sub->num_rects + 1; - - if (new_nb) { - rects = av_realloc_array(rects, new_nb, sizeof(*sub->rects)); - if (!rects) - return AVERROR(ENOMEM); - if (nb_rect_allocated) - *nb_rect_allocated = new_nb; - sub->rects = rects; - } - - rect = av_mallocz(sizeof(*rect)); - if (!rect) - return AVERROR(ENOMEM); - rects[sub->num_rects++] = rect; - rect->type = SUBTITLE_ASS; - ass_str = ff_ass_get_dialog(readorder, layer, style, speaker, dialog); - if (!ass_str) - return AVERROR(ENOMEM); - rect->ass = ass_str; - return 0; -} - -int ff_ass_add_rect(AVSubtitle *sub, const char *dialog, - int readorder, int layer, const char *style, - const char *speaker) +char *avpriv_ass_get_dialog_ex(int readorder, int layer, const char *style, + const char *speaker, int margin_l, int margin_r, + int margin_v, const char *effect, const char *text) { - return ff_ass_add_rect2(sub, dialog, readorder, layer, style, speaker, NULL); -} - -void ff_ass_decoder_flush(AVCodecContext *avctx) -{ - FFASSDecoderContext *s = avctx->priv_data; - if (!(avctx->flags2 & AV_CODEC_FLAG2_RO_FLUSH_NOOP)) - s->readorder = 0; + return av_asprintf("%d,%d,%s,%s,%d,%d,%d,%s,%s", + readorder, layer, style ? style : "Default", + speaker ? speaker : "", margin_l, margin_r, + margin_v, effect ? effect : "", text); } -void ff_ass_bprint_text_event(AVBPrint *buf, const char *p, int size, +void avpriv_ass_bprint_text_event(AVBPrint *buf, const char *p, int size, const char *linebreaks, int keep_ass_markup) { const char *p_end = p + size; diff --git a/libavutil/ass_internal.h b/libavutil/ass_internal.h new file mode 100644 index 0000000000000..fc4e6232fb204 --- /dev/null +++ b/libavutil/ass_internal.h @@ -0,0 +1,135 @@ +/* + * SSA/ASS common functions + * Copyright (c) 2010 Aurelien Jacobs + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_ASS_INTERNAL_H +#define AVUTIL_ASS_INTERNAL_H + +#include "subfmt.h" +#include "libavutil/bprint.h" + +#define ASS_DEFAULT_PLAYRESX 384 +#define ASS_DEFAULT_PLAYRESY 288 + +/** + * @name Default values for ASS style + * @{ + */ +#define ASS_DEFAULT_FONT "Arial" +#define ASS_DEFAULT_FONT_SIZE 16 +#define ASS_DEFAULT_COLOR 0xffffff +#define ASS_DEFAULT_BACK_COLOR 0 +#define ASS_DEFAULT_BOLD 0 +#define ASS_DEFAULT_ITALIC 0 +#define ASS_DEFAULT_UNDERLINE 0 +#define ASS_DEFAULT_ALIGNMENT 2 +#define ASS_DEFAULT_BORDERSTYLE 1 +/** @} */ + +/** + * Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS. + * Can specify all fields explicitly + * + * @param play_res_x subtitle frame width + * @param play_res_y subtitle frame height + * @param font name of the default font face to use + * @param font_size default font size to use + * @param primary_color default text color to use (ABGR) + * @param secondary_color default secondary text color to use (ABGR) + * @param outline_color default outline color to use (ABGR) + * @param back_color default background color to use (ABGR) + * @param bold 1 for bold text, 0 for normal text + * @param italic 1 for italic text, 0 for normal text + * @param underline 1 for underline text, 0 for normal text + * @param border_style 1 for outline, 3 for opaque box + * @param alignment position of the text (left, center, top...), defined after + * the layout of the numpad (1-3 sub, 4-6 mid, 7-9 top) + * @param print_av_version include library version in header + * @return a string containing the subtitle header that needs + * to be released via av_free() + */ +char* avpriv_ass_get_subtitle_header_full(int play_res_x, int play_res_y, + const char *font, int font_size, + int primary_color, int secondary_color, + int outline_color, int back_color, + int bold, int italic, int underline, + int border_style, int alignment, + int print_av_version); + +/** + * Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS. + * + * @param font name of the default font face to use + * @param font_size default font size to use + * @param color default text color to use (ABGR) + * @param back_color default background color to use (ABGR) + * @param bold 1 for bold text, 0 for normal text + * @param italic 1 for italic text, 0 for normal text + * @param underline 1 for underline text, 0 for normal text + * @param border_style 1 for outline, 3 for opaque box + * @param alignment position of the text (left, center, top...), defined after + * the layout of the numpad (1-3 sub, 4-6 mid, 7-9 top) + * @param print_av_version include library version in header + * @return a string containing the subtitle header that needs + * to be released via av_free() + */ +char* avpriv_ass_get_subtitle_header(const char *font, int font_size, + int color, int back_color, + int bold, int italic, int underline, + int border_style, int alignment, + int print_av_version); + +/** + * Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS + * with default style. + * + * @param print_av_version include library version in header + * @return a string containing the subtitle header that needs + * to be released via av_free() + */ +char* avpriv_ass_get_subtitle_header_default(int print_av_version); + +/** + * Craft an ASS dialog string. + */ +char *avpriv_ass_get_dialog(int readorder, int layer, const char *style, + const char *speaker, const char *text); + +/** + * Craft an ASS dialog string. + */ +char *avpriv_ass_get_dialog_ex(int readorder, int layer, const char *style, + const char *speaker, int margin_l, int margin_r, + int margin_v, const char *effect, const char *text); + +/** + * Escape a text subtitle using ASS syntax into an AVBPrint buffer. + * Newline characters will be escaped to \N. + * + * @param buf pointer to an initialized AVBPrint buffer + * @param p source text + * @param size size of the source text + * @param linebreaks additional newline chars, which will be escaped to \N + * @param keep_ass_markup braces and backslash will not be escaped if set + */ +void avpriv_ass_bprint_text_event(AVBPrint *buf, const char *p, int size, + const char *linebreaks, int keep_ass_markup); + +#endif /* AVUTIL_ASS_INTERNAL_H */ diff --git a/libavcodec/ass_split.c b/libavutil/ass_split.c similarity index 71% rename from libavcodec/ass_split.c rename to libavutil/ass_split.c index 73ef6196c5160..3e5e24e2fac43 100644 --- a/libavcodec/ass_split.c +++ b/libavutil/ass_split.c @@ -28,7 +28,7 @@ #include "libavutil/error.h" #include "libavutil/macros.h" #include "libavutil/mem.h" -#include "ass_split.h" +#include "ass_split_internal.h" typedef enum { ASS_STR, @@ -379,7 +379,7 @@ static int ass_split(ASSSplitContext *ctx, const char *buf) return buf ? 0 : AVERROR_INVALIDDATA; } -ASSSplitContext *ff_ass_split(const char *buf) +ASSSplitContext *avpriv_ass_split(const char *buf) { ASSSplitContext *ctx = av_mallocz(sizeof(*ctx)); if (!ctx) @@ -388,7 +388,7 @@ ASSSplitContext *ff_ass_split(const char *buf) buf += 3; ctx->current_section = -1; if (ass_split(ctx, buf) < 0) { - ff_ass_split_free(ctx); + avpriv_ass_split_free(ctx); return NULL; } return ctx; @@ -418,7 +418,7 @@ static void free_section(ASSSplitContext *ctx, const ASSSection *section) av_freep((uint8_t *)&ctx->ass + section->offset); } -void ff_ass_free_dialog(ASSDialog **dialogp) +void avpriv_ass_free_dialog(ASSDialog **dialogp) { ASSDialog *dialog = *dialogp; if (!dialog) @@ -430,7 +430,7 @@ void ff_ass_free_dialog(ASSDialog **dialogp) av_freep(dialogp); } -ASSDialog *ff_ass_split_dialog(ASSSplitContext *ctx, const char *buf) +ASSDialog *avpriv_ass_split_dialog(ASSSplitContext *ctx, const char *buf) { int i; static const ASSFields fields[] = { @@ -457,7 +457,7 @@ ASSDialog *ff_ass_split_dialog(ASSSplitContext *ctx, const char *buf) buf = skip_space(buf); len = last ? strlen(buf) : strcspn(buf, ","); if (len >= INT_MAX) { - ff_ass_free_dialog(&dialog); + avpriv_ass_free_dialog(&dialog); return NULL; } convert_func[type](ptr, buf, len); @@ -467,7 +467,7 @@ ASSDialog *ff_ass_split_dialog(ASSSplitContext *ctx, const char *buf) return dialog; } -void ff_ass_split_free(ASSSplitContext *ctx) +void avpriv_ass_split_free(ASSSplitContext *ctx) { if (ctx) { int i; @@ -479,87 +479,209 @@ void ff_ass_split_free(ASSSplitContext *ctx) } } +static int ass_remove_empty_braces(AVBPrint* buffer) +{ + char* tmp; + int ret = 0, n = 0; -int ff_ass_split_override_codes(const ASSCodesCallbacks *callbacks, void *priv, - const char *buf) + if (buffer == NULL || buffer->len == 0 || !av_bprint_is_complete(buffer)) + return 0; + + ret = av_bprint_finalize(buffer, &tmp); + if (ret) + return ret; + + for (unsigned i = 0; i < buffer->len; i++) { + if (tmp[i] == '{' && tmp[i+1] == '}') + i++; + else + tmp[n++] = tmp[i]; + } + + tmp[n++] = '\0'; + + av_bprint_init(buffer, n, n); + av_bprint_append_data(buffer, tmp, n - 1); + av_free(tmp); + + return ret; +} + +static void ass_write_filtered_line(AVBPrint* buffer, const char *buf, int len, enum ASSSplitComponents keep_flags, enum ASSSplitComponents split_component) +{ + if (buffer == NULL || buf == NULL || len == 0) + return; + + if (split_component != ASS_SPLIT_ANY && !(keep_flags & split_component)) + return; + + + av_bprint_append_data(buffer, buf, len - 1); +} + +int avpriv_ass_filter_override_codes(const ASSCodesCallbacks *callbacks, void *priv, const char *buf, AVBPrint* outbuffer, enum ASSSplitComponents keep_flags) { const char *text = NULL; char new_line[2]; - int text_len = 0; + int text_len = 0, ret = 0; while (buf && *buf) { - if (text && callbacks->text && - (sscanf(buf, "\\%1[nN]", new_line) == 1 || - !strncmp(buf, "{\\", 2))) { - callbacks->text(priv, text, text_len); + + if (text && (sscanf(buf, "\\%1[nN]", new_line) == 1 || !strncmp(buf, "{\\", 2))) { + ass_write_filtered_line(outbuffer, text, text_len + 1, keep_flags, ASS_SPLIT_TEXT | ASS_SPLIT_TEXT2); + + if (callbacks->text) + callbacks->text(priv, text, text_len); text = NULL; } + if (sscanf(buf, "\\%1[nN]", new_line) == 1) { if (callbacks->new_line) callbacks->new_line(priv, new_line[0] == 'N'); + ass_write_filtered_line(outbuffer, buf, 3, keep_flags, ASS_SPLIT_ANY); buf += 2; } else if (!strncmp(buf, "{\\", 2)) { + ass_write_filtered_line(outbuffer, buf, 2, keep_flags, ASS_SPLIT_ANY); buf++; while (*buf == '\\') { - char style[2], c[2], sep[2], c_num[2] = "0", tmp[128] = {0}; + char style[4], c[2], axis[3], sep[3], c_num[2] = "0", tmp[128] = {0}; unsigned int color = 0xFFFFFFFF; - int len, size = -1, an = -1, alpha = -1; - int x1, y1, x2, y2, t1 = -1, t2 = -1; + int len, size = -1, an = -1, alpha = -1, scale = 0; + float f1 = 1; + int x1, y1, x2, y2, x3, t1 = -1, t2 = -1, t3 = -1, t4 = -1, accel = 1; if (sscanf(buf, "\\%1[bisu]%1[01\\}]%n", style, c, &len) > 1) { int close = c[0] == '0' ? 1 : c[0] == '1' ? 0 : -1; len += close != -1; + switch (c[0]) { + case 'b': + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_FONT_BOLD); + break; + case 'u': + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_FONT_UNDERLINE); + break; + case 'i': + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_FONT_ITALIC); + break; + case 'a': + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_FONT_STRIKEOUT); + break; + } if (callbacks->style) callbacks->style(priv, style[0], close); } else if (sscanf(buf, "\\c%1[\\}]%n", sep, &len) > 0 || sscanf(buf, "\\c&H%X&%1[\\}]%n", &color, sep, &len) > 1 || sscanf(buf, "\\%1[1234]c%1[\\}]%n", c_num, sep, &len) > 1 || sscanf(buf, "\\%1[1234]c&H%X&%1[\\}]%n", c_num, &color, sep, &len) > 2) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_COLOR); if (callbacks->color) callbacks->color(priv, color, c_num[0] - '0'); } else if (sscanf(buf, "\\alpha%1[\\}]%n", sep, &len) > 0 || sscanf(buf, "\\alpha&H%2X&%1[\\}]%n", &alpha, sep, &len) > 1 || sscanf(buf, "\\%1[1234]a%1[\\}]%n", c_num, sep, &len) > 1 || sscanf(buf, "\\%1[1234]a&H%2X&%1[\\}]%n", c_num, &alpha, sep, &len) > 2) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_ALPHA); if (callbacks->alpha) callbacks->alpha(priv, alpha, c_num[0] - '0'); } else if (sscanf(buf, "\\fn%1[\\}]%n", sep, &len) > 0 || sscanf(buf, "\\fn%127[^\\}]%1[\\}]%n", tmp, sep, &len) > 1) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_FONT_NAME); if (callbacks->font_name) callbacks->font_name(priv, tmp[0] ? tmp : NULL); } else if (sscanf(buf, "\\fs%1[\\}]%n", sep, &len) > 0 || sscanf(buf, "\\fs%u%1[\\}]%n", &size, sep, &len) > 1) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_FONT_SIZE); if (callbacks->font_size) callbacks->font_size(priv, size); + } else if (sscanf(buf, "\\fscx%1[\\}]%n", sep, &len) > 0 || + sscanf(buf, "\\fscx%f%1[\\}]%n", &f1, sep, &len) > 1) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_FONT_SCALE); + } else if (sscanf(buf, "\\fscy%1[\\}]%n", sep, &len) > 0 || + sscanf(buf, "\\fscy%f%1[\\}]%n", &f1, sep, &len) > 1) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_FONT_SCALE); + } else if (sscanf(buf, "\\fsp%1[\\}]%n", sep, &len) > 0 || + sscanf(buf, "\\fsp%u%1[\\}]%n", &size, sep, &len) > 1) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_FONT_SPACING); + } else if (sscanf(buf, "\\fe%1[\\}]%n", sep, &len) > 0 || + sscanf(buf, "\\fe%u%1[\\}]%n", &size, sep, &len) > 1) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_FONT_CHARSET); + } else if (sscanf(buf, "\\bord%1[\\}]%n", sep, &len) > 0 || + sscanf(buf, "\\bord%u%1[\\}]%n", &size, sep, &len) > 1) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_TEXT_BORDER); + } else if (sscanf(buf, "\\shad%1[\\}]%n", sep, &len) > 0 || + sscanf(buf, "\\shad%u%1[\\}]%n", &size, sep, &len) > 1) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_TEXT_SHADOW); + } else if (sscanf(buf, "\\fr%1[\\}]%n", sep, &len) > 0 || + sscanf(buf, "\\fr%u%1[\\}]%n", &x1, sep, &len) > 1 || + sscanf(buf, "\\fr%1[xyz]%1[\\}]%n", axis, sep, &len) > 1 || + sscanf(buf, "\\fr%1[xyz]%u%1[\\}]%n", axis, &size, sep, &len) > 2) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_TEXT_ROTATE); + } else if (sscanf(buf, "\\blur%1[\\}]%n", sep, &len) > 0 || + sscanf(buf, "\\blur%u%1[\\}]%n", &size, sep, &len) > 1) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_TEXT_BLUR); + } else if (sscanf(buf, "\\be%1[\\}]%n", sep, &len) > 0 || + sscanf(buf, "\\be%u%1[\\}]%n", &size, sep, &len) > 1) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_TEXT_BLUR); + } else if (sscanf(buf, "\\q%1[\\}]%n", sep, &len) > 0 || + sscanf(buf, "\\q%u%1[\\}]%n", &size, sep, &len) > 1) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_TEXT_WRAP); } else if (sscanf(buf, "\\a%1[\\}]%n", sep, &len) > 0 || sscanf(buf, "\\a%2u%1[\\}]%n", &an, sep, &len) > 1 || sscanf(buf, "\\an%1[\\}]%n", sep, &len) > 0 || sscanf(buf, "\\an%1u%1[\\}]%n", &an, sep, &len) > 1) { if (an != -1 && buf[2] != 'n') an = (an&3) + (an&4 ? 6 : an&8 ? 3 : 0); + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_TEXT_ALIGNMENT); if (callbacks->alignment) callbacks->alignment(priv, an); } else if (sscanf(buf, "\\r%1[\\}]%n", sep, &len) > 0 || sscanf(buf, "\\r%127[^\\}]%1[\\}]%n", tmp, sep, &len) > 1) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_CANCELLING); if (callbacks->cancel_overrides) callbacks->cancel_overrides(priv, tmp); } else if (sscanf(buf, "\\move(%d,%d,%d,%d)%1[\\}]%n", &x1, &y1, &x2, &y2, sep, &len) > 4 || sscanf(buf, "\\move(%d,%d,%d,%d,%d,%d)%1[\\}]%n", &x1, &y1, &x2, &y2, &t1, &t2, sep, &len) > 6) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_MOVE); if (callbacks->move) callbacks->move(priv, x1, y1, x2, y2, t1, t2); } else if (sscanf(buf, "\\pos(%d,%d)%1[\\}]%n", &x1, &y1, sep, &len) > 2) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_POS); if (callbacks->move) callbacks->move(priv, x1, y1, x1, y1, -1, -1); } else if (sscanf(buf, "\\org(%d,%d)%1[\\}]%n", &x1, &y1, sep, &len) > 2) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_ORIGIN); if (callbacks->origin) callbacks->origin(priv, x1, y1); + } else if (sscanf(buf, "\\t(%1[\\}]%n", sep, &len) > 0 || + sscanf(buf, "\\t(%d,%d,%1[\\}]%n", &t1, &t2, sep, &len) > 2 || + sscanf(buf, "\\t(%d,%d,%d,%1[\\}]%n", &t1, &t2, &accel, sep, &len) > 3) { + + len = strcspn(buf, ")") + 2; + + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_ANIMATE); + if (callbacks->animate) + callbacks->animate(priv, t1, t2, accel, tmp); + } else if (sscanf(buf, "\\fade(%d,%d,%d,%d,%d,%d,%d)%1[\\}]%n", &x1, &x2, &x3, &t1, &t2, &t3, &t4, sep, &len) > 7) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_FADE); + } else if (sscanf(buf, "\\fad(%d,%d)%1[\\}]%n", &t1, &t2, sep, &len) > 2) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_FADE); + } else if (sscanf(buf, "\\clip(%d,%d,%d,%d)%1[\\}]%n", &x1, &y1, &x2, &y2, sep, &len) > 4) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_CLIP); + } else if (sscanf(buf, "\\p%1[\\}]%n", sep, &len) > 0 || + sscanf(buf, "\\p%u%1[\\}]%n", &scale, sep, &len) > 1) { + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_DRAW); + if (callbacks->drawing_mode) + callbacks->drawing_mode(priv, scale); } else { - len = strcspn(buf+1, "\\}") + 2; /* skip unknown code */ - } + len = strcspn(buf+1, "\\}") + 2; /* unknown code */ + ass_write_filtered_line(outbuffer, buf, len, keep_flags, ASS_SPLIT_UNKNOWN); + } buf += len - 1; } if (*buf++ != '}') return AVERROR_INVALIDDATA; - } else { + + ass_write_filtered_line(outbuffer, "}", 2, keep_flags, ASS_SPLIT_ANY); + } else { if (!text) { text = buf; text_len = 1; @@ -568,14 +690,27 @@ int ff_ass_split_override_codes(const ASSCodesCallbacks *callbacks, void *priv, buf++; } } + if (text) + ass_write_filtered_line(outbuffer, text, text_len + 1, keep_flags, ASS_SPLIT_TEXT | ASS_SPLIT_TEXT2); if (text && callbacks->text) callbacks->text(priv, text, text_len); if (callbacks->end) callbacks->end(priv); - return 0; + + if (outbuffer) + ret = ass_remove_empty_braces(outbuffer); + + return ret; +} + + +int avpriv_ass_split_override_codes(const ASSCodesCallbacks *callbacks, void *priv, + const char *buf) +{ + return avpriv_ass_filter_override_codes(callbacks, priv, buf, NULL, 0); } -ASSStyle *ff_ass_style_get(ASSSplitContext *ctx, const char *style) +ASSStyle *avpriv_ass_style_get(ASSSplitContext *ctx, const char *style) { ASS *ass = &ctx->ass; int i; diff --git a/libavutil/ass_split_internal.h b/libavutil/ass_split_internal.h new file mode 100644 index 0000000000000..5d82aa88868a5 --- /dev/null +++ b/libavutil/ass_split_internal.h @@ -0,0 +1,254 @@ +/* + * SSA/ASS spliting functions + * Copyright (c) 2010 Aurelien Jacobs + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_ASS_SPLIT_INTERNAL_H +#define AVUTIL_ASS_SPLIT_INTERNAL_H + +#include "bprint.h" + +enum ASSSplitComponents +{ + ASS_SPLIT_ANY = 0, + ASS_SPLIT_TEXT = (1 << 0), + ASS_SPLIT_TEXT2 = (1 << 1), // Same semantics as ASS_SPLIT_TEXT. To work around help output default display. + ASS_SPLIT_COLOR = (1 << 2), + ASS_SPLIT_ALPHA = (1 << 3), + ASS_SPLIT_FONT_NAME = (1 << 4), + ASS_SPLIT_FONT_SIZE = (1 << 5), + ASS_SPLIT_FONT_SCALE = (1 << 6), + ASS_SPLIT_FONT_SPACING = (1 << 7), + ASS_SPLIT_FONT_CHARSET = (1 << 8), + ASS_SPLIT_FONT_BOLD = (1 << 9), + ASS_SPLIT_FONT_ITALIC = (1 << 10), + ASS_SPLIT_FONT_UNDERLINE = (1 << 11), + ASS_SPLIT_FONT_STRIKEOUT = (1 << 12), + ASS_SPLIT_TEXT_BORDER = (1 << 13), + ASS_SPLIT_TEXT_SHADOW = (1 << 14), + ASS_SPLIT_TEXT_ROTATE = (1 << 15), + ASS_SPLIT_TEXT_BLUR = (1 << 16), + ASS_SPLIT_TEXT_WRAP = (1 << 17), + ASS_SPLIT_TEXT_ALIGNMENT = (1 << 18), + ASS_SPLIT_CANCELLING = (1 << 19), + ASS_SPLIT_MOVE = (1 << 20), + ASS_SPLIT_POS = (1 << 21), + ASS_SPLIT_ORIGIN = (1 << 22), + ASS_SPLIT_DRAW = (1 << 23), + ASS_SPLIT_ANIMATE = (1 << 24), + ASS_SPLIT_FADE = (1 << 25), + ASS_SPLIT_CLIP = (1 << 26), + ASS_SPLIT_UNKNOWN = (1 << 27), + + ASS_SPLIT_BASIC = ASS_SPLIT_TEXT2 | ASS_SPLIT_COLOR | ASS_SPLIT_ALPHA | ASS_SPLIT_FONT_NAME | ASS_SPLIT_FONT_SIZE | ASS_SPLIT_FONT_SCALE | ASS_SPLIT_FONT_SPACING | ASS_SPLIT_FONT_CHARSET | ASS_SPLIT_FONT_BOLD | ASS_SPLIT_FONT_ITALIC | ASS_SPLIT_FONT_UNDERLINE | ASS_SPLIT_FONT_STRIKEOUT | ASS_SPLIT_TEXT_BORDER | ASS_SPLIT_TEXT_SHADOW | ASS_SPLIT_TEXT_WRAP | ASS_SPLIT_TEXT_ALIGNMENT | ASS_SPLIT_POS | ASS_SPLIT_CANCELLING, + ASS_SPLIT_ALL_KNOWN = ASS_SPLIT_TEXT2 | ASS_SPLIT_COLOR | ASS_SPLIT_ALPHA | ASS_SPLIT_FONT_NAME | ASS_SPLIT_FONT_SIZE | ASS_SPLIT_FONT_SCALE | ASS_SPLIT_FONT_SPACING | ASS_SPLIT_FONT_CHARSET | ASS_SPLIT_FONT_BOLD | ASS_SPLIT_FONT_ITALIC | ASS_SPLIT_FONT_UNDERLINE | ASS_SPLIT_FONT_STRIKEOUT | ASS_SPLIT_TEXT_BORDER | ASS_SPLIT_TEXT_SHADOW | ASS_SPLIT_TEXT_ROTATE | ASS_SPLIT_TEXT_BLUR | ASS_SPLIT_TEXT_WRAP | ASS_SPLIT_TEXT_ALIGNMENT | ASS_SPLIT_CANCELLING | ASS_SPLIT_POS | ASS_SPLIT_MOVE | ASS_SPLIT_ORIGIN | ASS_SPLIT_DRAW | ASS_SPLIT_ANIMATE | ASS_SPLIT_FADE | ASS_SPLIT_CLIP, +}; + + /** + * fields extracted from the [Script Info] section + */ + typedef struct { + char *script_type; /**< SSA script format version (eg. v4.00) */ + char *collisions; /**< how subtitles are moved to prevent collisions */ + int play_res_x; /**< video width that ASS coords are referring to */ + int play_res_y; /**< video height that ASS coords are referring to */ + float timer; /**< time multiplier to apply to SSA clock (in %) */ +} ASSScriptInfo; + +/** + * fields extracted from the [V4(+) Styles] section + */ +typedef struct { + char *name; /**< name of the tyle (case sensitive) */ + char *font_name; /**< font face (case sensitive) */ + int font_size; /**< font height */ + int primary_color; /**< color that a subtitle will normally appear in */ + int secondary_color; + int outline_color; /**< color for outline in ASS, called tertiary in SSA */ + int back_color; /**< color of the subtitle outline or shadow */ + int bold; /**< whether text is bold (1) or not (0) */ + int italic; /**< whether text is italic (1) or not (0) */ + int underline; /**< whether text is underlined (1) or not (0) */ + int strikeout; + float scalex; + float scaley; + float spacing; + float angle; + int border_style; + float outline; + float shadow; + int alignment; /**< position of the text (left, center, top...), + defined after the layout of the numpad + (1-3 sub, 4-6 mid, 7-9 top) */ + int margin_l; + int margin_r; + int margin_v; + int alpha_level; + int encoding; +} ASSStyle; + +/** + * fields extracted from the [Events] section + */ +typedef struct { + int readorder; + int layer; /**< higher numbered layers are drawn over lower numbered */ + int start; /**< start time of the dialog in centiseconds */ + int end; /**< end time of the dialog in centiseconds */ + char *style; /**< name of the ASSStyle to use with this dialog */ + char *name; + int margin_l; + int margin_r; + int margin_v; + char *effect; + char *text; /**< actual text which will be displayed as a subtitle, + can include style override control codes (see + avpriv_ass_split_override_codes()) */ +} ASSDialog; + +/** + * structure containing the whole split ASS data + */ +typedef struct { + ASSScriptInfo script_info; /**< general information about the SSA script*/ + ASSStyle *styles; /**< array of split out styles */ + int styles_count; /**< number of ASSStyle in the styles array */ + ASSDialog *dialogs; /**< array of split out dialogs */ + int dialogs_count; /**< number of ASSDialog in the dialogs array*/ +} ASS; + +/** + * This struct can be casted to ASS to access to the split data. + */ +typedef struct ASSSplitContext ASSSplitContext; + +/** + * Split a full ASS file or a ASS header from a string buffer and store + * the split structure in a newly allocated context. + * + * @param buf String containing the ASS formatted data. + * @return Newly allocated struct containing split data. + */ +ASSSplitContext *avpriv_ass_split(const char *buf); + +/** + * Free a dialogue obtained from avpriv_ass_split_dialog(). + */ +void avpriv_ass_free_dialog(ASSDialog **dialogp); + +/** + * Split one ASS Dialogue line from a string buffer. + * + * @param ctx Context previously initialized by ff_ass_split(). + * @param buf String containing the ASS "Dialogue" line. + * @return Pointer to the split ASSDialog. Must be freed with + * ff_ass_free_dialog() + */ +ASSDialog *avpriv_ass_split_dialog(ASSSplitContext *ctx, const char *buf); + +/** + * Free all the memory allocated for an ASSSplitContext. + * + * @param ctx Context previously initialized by ff_ass_split(). + */ +void avpriv_ass_split_free(ASSSplitContext *ctx); + +/** + * Set of callback functions corresponding to each override codes that can + * be encountered in a "Dialogue" Text field. + */ +typedef struct { + /** + * @defgroup ass_styles ASS styles + * @{ + */ + void (*text)(void *priv, const char *text, int len); + void (*hard_space)(void *priv); + void (*new_line)(void *priv, int forced); + void (*style)(void *priv, char style, int close); + void (*color)(void *priv, unsigned int /* color */, unsigned int color_id); + void (*alpha)(void *priv, int alpha, int alpha_id); + void (*font_name)(void *priv, const char *name); + void (*font_size)(void *priv, int size); + void (*alignment)(void *priv, int alignment); + void (*cancel_overrides)(void *priv, const char *style); + /** @} */ + + /** + * @defgroup ass_functions ASS functions + * @{ + */ + void (*move)(void *priv, int x1, int y1, int x2, int y2, int t1, int t2); + void (*animate)(void *priv, int t1, int t2, int accel, char *style); + void (*origin)(void *priv, int x, int y); + void (*drawing_mode)(void *priv, int scale); + /** @} */ + + /** + * @defgroup ass_ext ASS extensible parsing callback + * @{ + */ + void (*ext)(void *priv, int ext_id, const char *text, int p1, int p2); + /** @} */ + + /** + * @defgroup ass_end end of Dialogue Event + * @{ + */ + void (*end)(void *priv); + /** @} */ +} ASSCodesCallbacks; + +/** + * Split override codes out of a ASS "Dialogue" Text field. + * + * @param callbacks Set of callback functions called for each override code + * encountered. + * @param priv Opaque pointer passed to the callback functions. + * @param buf The ASS "Dialogue" Text field to split. + * @param outbuffer The output buffer. + * @param keep_flags Flags for filtering ass codes. + * @return >= 0 on success otherwise an error code <0 + */ +int avpriv_ass_filter_override_codes(const ASSCodesCallbacks *callbacks, + void *priv, const char *buf, + AVBPrint *outbuffer, enum ASSSplitComponents keep_flags); + +/** + * Split override codes out of a ASS "Dialogue" Text field. + * + * @param callbacks Set of callback functions called for each override code + * encountered. + * @param priv Opaque pointer passed to the callback functions. + * @param buf The ASS "Dialogue" Text field to split. + * @return >= 0 on success otherwise an error code <0 + */ +int avpriv_ass_split_override_codes(const ASSCodesCallbacks *callbacks, + void *priv, const char *buf); + +/** + * Find an ASSStyle structure by its name. + * + * @param ctx Context previously initialized by ff_ass_split(). + * @param style name of the style to search for. + * @return the ASSStyle corresponding to style, or NULL if style can't be found + */ +ASSStyle *avpriv_ass_style_get(ASSSplitContext *ctx, const char *style); + +#endif /* AVUTIL_ASS_SPLIT_INTERNAL_H */ diff --git a/libavutil/frame.c b/libavutil/frame.c index de4ad1f94d23b..230673e4e1373 100644 --- a/libavutil/frame.c +++ b/libavutil/frame.c @@ -26,6 +26,7 @@ #include "imgutils.h" #include "mem.h" #include "samplefmt.h" +#include "subfmt.h" #include "hwcontext.h" #if FF_API_OLD_CHANNEL_LAYOUT @@ -52,6 +53,9 @@ const char *av_get_colorspace_name(enum AVColorSpace val) return name[val]; } #endif + +static int frame_copy_subtitles(AVFrame *dst, const AVFrame *src, int copy_data); + static void get_frame_defaults(AVFrame *frame) { memset(frame, 0, sizeof(*frame)); @@ -77,7 +81,12 @@ FF_ENABLE_DEPRECATION_WARNINGS frame->colorspace = AVCOL_SPC_UNSPECIFIED; frame->color_range = AVCOL_RANGE_UNSPECIFIED; frame->chroma_location = AVCHROMA_LOC_UNSPECIFIED; - frame->flags = 0; + frame->num_subtitle_areas = 0; + frame->subtitle_areas = NULL; + frame->subtitle_header = NULL; + frame->repeat_sub = 0; + frame->subtitle_timing.start_pts = 0; + frame->subtitle_timing.duration = 0; } static void free_side_data(AVFrameSideData **ptr_sd) @@ -256,6 +265,23 @@ FF_ENABLE_DEPRECATION_WARNINGS } +static int get_subtitle_buffer(AVFrame *frame) +{ + // Buffers in AVFrame->buf[] are not used in case of subtitle frames. + // To accomodate with existing code, checking ->buf[0] to determine + // whether a frame is ref-counted or has data, we're adding a 1-byte + // buffer here, which marks the subtitle frame to contain data. + frame->buf[0] = av_buffer_alloc(1); + if (!frame->buf[0]) { + av_frame_unref(frame); + return AVERROR(ENOMEM); + } + + frame->extended_data = frame->data; + + return 0; +} + int av_frame_get_buffer(AVFrame *frame, int align) { if (frame->format < 0) @@ -263,23 +289,41 @@ int av_frame_get_buffer(AVFrame *frame, int align) FF_DISABLE_DEPRECATION_WARNINGS if (frame->width > 0 && frame->height > 0) - return get_video_buffer(frame, align); + frame->type = AVMEDIA_TYPE_VIDEO; else if (frame->nb_samples > 0 && (av_channel_layout_check(&frame->ch_layout) #if FF_API_OLD_CHANNEL_LAYOUT || frame->channel_layout || frame->channels > 0 #endif )) - return get_audio_buffer(frame, align); + frame->type = AVMEDIA_TYPE_AUDIO; FF_ENABLE_DEPRECATION_WARNINGS - return AVERROR(EINVAL); + return av_frame_get_buffer2(frame, align); +} + +int av_frame_get_buffer2(AVFrame *frame, int align) +{ + if (frame->format < 0) + return AVERROR(EINVAL); + + switch (frame->type) { + case AVMEDIA_TYPE_VIDEO: + return get_video_buffer(frame, align); + case AVMEDIA_TYPE_AUDIO: + return get_audio_buffer(frame, align); + case AVMEDIA_TYPE_SUBTITLE: + return get_subtitle_buffer(frame); + default: + return AVERROR(EINVAL); + } } static int frame_copy_props(AVFrame *dst, const AVFrame *src, int force_copy) { int ret, i; + dst->type = src->type; dst->key_frame = src->key_frame; dst->pict_type = src->pict_type; dst->sample_aspect_ratio = src->sample_aspect_ratio; @@ -316,6 +360,12 @@ FF_ENABLE_DEPRECATION_WARNINGS dst->colorspace = src->colorspace; dst->color_range = src->color_range; dst->chroma_location = src->chroma_location; + dst->repeat_sub = src->repeat_sub; + dst->subtitle_timing.start_pts = src->subtitle_timing.start_pts; + dst->subtitle_timing.duration = src->subtitle_timing.duration; + + if ((ret = av_buffer_replace(&dst->subtitle_header, src->subtitle_header)) < 0) + return ret; av_dict_copy(&dst->metadata, src->metadata, 0); @@ -363,6 +413,7 @@ FF_ENABLE_DEPRECATION_WARNINGS av_assert1(dst->ch_layout.nb_channels == 0 && dst->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC); + dst->type = src->type; dst->format = src->format; dst->width = src->width; dst->height = src->height; @@ -395,7 +446,7 @@ FF_ENABLE_DEPRECATION_WARNINGS /* duplicate the frame data if it's not refcounted */ if (!src->buf[0]) { - ret = av_frame_get_buffer(dst, 0); + ret = av_frame_get_buffer2(dst, 0); if (ret < 0) goto fail; @@ -417,6 +468,10 @@ FF_ENABLE_DEPRECATION_WARNINGS } } + /* copy subtitle areas */ + if (src->type == AVMEDIA_TYPE_SUBTITLE) + frame_copy_subtitles(dst, src, 0); + if (src->extended_buf) { dst->extended_buf = av_calloc(src->nb_extended_buf, sizeof(*dst->extended_buf)); @@ -486,7 +541,7 @@ AVFrame *av_frame_clone(const AVFrame *src) void av_frame_unref(AVFrame *frame) { - int i; + unsigned i, n; if (!frame) return; @@ -505,6 +560,21 @@ void av_frame_unref(AVFrame *frame) av_buffer_unref(&frame->opaque_ref); av_buffer_unref(&frame->private_ref); + av_buffer_unref(&frame->subtitle_header); + + for (i = 0; i < frame->num_subtitle_areas; i++) { + AVSubtitleArea *area = frame->subtitle_areas[i]; + + for (n = 0; n < FF_ARRAY_ELEMS(area->buf); n++) + av_buffer_unref(&area->buf[n]); + + av_freep(&area->text); + av_freep(&area->ass); + av_free(area); + } + + av_freep(&frame->subtitle_areas); + if (frame->extended_data != frame->data) av_freep(&frame->extended_data); @@ -532,18 +602,28 @@ FF_ENABLE_DEPRECATION_WARNINGS int av_frame_is_writable(AVFrame *frame) { - int i, ret = 1; + AVSubtitleArea *area; + int ret = 1; /* assume non-refcounted frames are not writable */ if (!frame->buf[0]) return 0; - for (i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++) + for (unsigned i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++) if (frame->buf[i]) ret &= !!av_buffer_is_writable(frame->buf[i]); - for (i = 0; i < frame->nb_extended_buf; i++) + for (unsigned i = 0; i < frame->nb_extended_buf; i++) ret &= !!av_buffer_is_writable(frame->extended_buf[i]); + for (unsigned i = 0; i < frame->num_subtitle_areas; i++) { + area = frame->subtitle_areas[i]; + if (area) { + for (unsigned n = 0; n < FF_ARRAY_ELEMS(area->buf); n++) + if (area->buf[n]) + ret &= !!av_buffer_is_writable(area->buf[n]); + } + } + return ret; } @@ -556,6 +636,7 @@ int av_frame_make_writable(AVFrame *frame) return 0; memset(&tmp, 0, sizeof(tmp)); + tmp.type = frame->type; tmp.format = frame->format; tmp.width = frame->width; tmp.height = frame->height; @@ -575,7 +656,7 @@ FF_ENABLE_DEPRECATION_WARNINGS if (frame->hw_frames_ctx) ret = av_hwframe_get_buffer(frame->hw_frames_ctx, &tmp, 0); else - ret = av_frame_get_buffer(&tmp, 0); + ret = av_frame_get_buffer2(&tmp, 0); if (ret < 0) return ret; @@ -610,7 +691,12 @@ AVBufferRef *av_frame_get_plane_buffer(AVFrame *frame, int plane) uint8_t *data; int planes, i; - if (frame->nb_samples) { + switch(frame->type) { + case AVMEDIA_TYPE_VIDEO: + planes = 4; + break; + case AVMEDIA_TYPE_AUDIO: + { int channels = frame->ch_layout.nb_channels; #if FF_API_OLD_CHANNEL_LAYOUT @@ -624,8 +710,11 @@ FF_ENABLE_DEPRECATION_WARNINGS if (!channels) return NULL; planes = av_sample_fmt_is_planar(frame->format) ? channels : 1; - } else - planes = 4; + break; + } + default: + return NULL; + } if (plane < 0 || plane >= planes || !frame->extended_data[plane]) return NULL; @@ -768,22 +857,103 @@ FF_ENABLE_DEPRECATION_WARNINGS return 0; } +static int av_subtitle_area2area(AVSubtitleArea *dst, const AVSubtitleArea *src, int copy_data) +{ + dst->x = src->x; + dst->y = src->y; + dst->w = src->w; + dst->h = src->h; + dst->nb_colors = src->nb_colors; + dst->type = src->type; + dst->flags = src->flags; + + switch (dst->type) { + case AV_SUBTITLE_FMT_BITMAP: + + for (unsigned i = 0; i < AV_NUM_BUFFER_POINTERS; i++) { + if (src->h > 0 && src->w > 0 && src->buf[i]) { + dst->buf[0] = av_buffer_ref(src->buf[i]); + if (!dst->buf[i]) + return AVERROR(ENOMEM); + + if (copy_data) { + const int ret = av_buffer_make_writable(&dst->buf[i]); + if (ret < 0) + return ret; + } + + dst->linesize[i] = src->linesize[i]; + } + } + + memcpy(&dst->pal[0], &src->pal[0], sizeof(src->pal[0]) * 256); + + break; + case AV_SUBTITLE_FMT_TEXT: + + if (src->text) { + dst->text = av_strdup(src->text); + if (!dst->text) + return AVERROR(ENOMEM); + } + + break; + case AV_SUBTITLE_FMT_ASS: + + if (src->ass) { + dst->ass = av_strdup(src->ass); + if (!dst->ass) + return AVERROR(ENOMEM); + } + + break; + default: + + av_log(NULL, AV_LOG_ERROR, "Subtitle area has invalid format: %d", dst->type); + return AVERROR(ENOMEM); + } + + return 0; +} + +static int frame_copy_subtitles(AVFrame *dst, const AVFrame *src, int copy_data) +{ + dst->format = src->format; + + dst->num_subtitle_areas = src->num_subtitle_areas; + + if (src->num_subtitle_areas) { + dst->subtitle_areas = av_malloc_array(src->num_subtitle_areas, sizeof(AVSubtitleArea *)); + + for (unsigned i = 0; i < src->num_subtitle_areas; i++) { + dst->subtitle_areas[i] = av_mallocz(sizeof(AVSubtitleArea)); + av_subtitle_area2area(dst->subtitle_areas[i], src->subtitle_areas[i], copy_data); + } + } + + return 0; +} + int av_frame_copy(AVFrame *dst, const AVFrame *src) { if (dst->format != src->format || dst->format < 0) return AVERROR(EINVAL); -FF_DISABLE_DEPRECATION_WARNINGS - if (dst->width > 0 && dst->height > 0) + switch(dst->type) { + case AVMEDIA_TYPE_VIDEO: return frame_copy_video(dst, src); - else if (dst->nb_samples > 0 && + case AVMEDIA_TYPE_AUDIO: + if (dst->nb_samples > 0 && (av_channel_layout_check(&dst->ch_layout) #if FF_API_OLD_CHANNEL_LAYOUT || dst->channels > 0 #endif )) - return frame_copy_audio(dst, src); -FF_ENABLE_DEPRECATION_WARNINGS + return frame_copy_audio(dst, src); + break; + case AVMEDIA_TYPE_SUBTITLE: + return frame_copy_subtitles(dst, src, 1); + } return AVERROR(EINVAL); } diff --git a/libavutil/frame.h b/libavutil/frame.h index e60a82f6c0ef9..9ce267bbc5900 100644 --- a/libavutil/frame.h +++ b/libavutil/frame.h @@ -25,7 +25,6 @@ #ifndef AVUTIL_FRAME_H #define AVUTIL_FRAME_H -#include #include #include "avutil.h" @@ -35,6 +34,7 @@ #include "rational.h" #include "samplefmt.h" #include "pixfmt.h" +#include "subfmt.h" #include "version.h" @@ -293,7 +293,7 @@ typedef struct AVRegionOfInterest { } AVRegionOfInterest; /** - * This structure describes decoded (raw) audio or video data. + * This structure describes decoded (raw) audio, video or subtitle data. * * AVFrame must be allocated using av_frame_alloc(). Note that this only * allocates the AVFrame itself, the buffers for the data must be managed @@ -407,7 +407,7 @@ typedef struct AVFrame { /** * format of the frame, -1 if unknown or unset * Values correspond to enum AVPixelFormat for video frames, - * enum AVSampleFormat for audio) + * enum AVSampleFormat for audio, AVSubtitleType for subtitles) */ int format; @@ -712,6 +712,53 @@ typedef struct AVFrame { * Duration of the frame, in the same units as pts. 0 if unknown. */ int64_t duration; + + /** + * Media type of the frame (audio, video, subtitles..) + * + * See AVMEDIA_TYPE_xxx + */ + enum AVMediaType type; + + /** + * Number of items in the @ref subtitle_areas array. + */ + unsigned num_subtitle_areas; + + /** + * Array of subtitle areas, may be empty. + */ + AVSubtitleArea **subtitle_areas; + + /** + * Header containing style information for text subtitles. + */ + AVBufferRef *subtitle_header; + + /** + * Indicates that a subtitle frame is a repeated frame for arbitrating flow + * in a filter graph. + * The field subtitle_timing.start_pts always indicates the original presentation + * time, while the frame's pts field may be different. + */ + int repeat_sub; + + struct SubtitleTiming + { + /** + * The display start time, in AV_TIME_BASE. + * + * For subtitle frames, AVFrame.pts is populated from the packet pts value, + * which is not always the same as this value. + */ + int64_t start_pts; + + /** + * Display duration, in AV_TIME_BASE. + */ + int64_t duration; + + } subtitle_timing; } AVFrame; @@ -788,6 +835,8 @@ void av_frame_move_ref(AVFrame *dst, AVFrame *src); /** * Allocate new buffer(s) for audio or video data. * + * Note: For subtitle data, use av_frame_get_buffer2 + * * The following fields must be set on frame before calling this function: * - format (pixel format for video, sample format for audio) * - width and height for video @@ -807,9 +856,39 @@ void av_frame_move_ref(AVFrame *dst, AVFrame *src); * recommended to pass 0 here unless you know what you are doing. * * @return 0 on success, a negative AVERROR on error. + * + * @deprecated Use @ref av_frame_get_buffer2 instead and set @ref AVFrame.type + * before calling. */ +attribute_deprecated int av_frame_get_buffer(AVFrame *frame, int align); +/** + * Allocate new buffer(s) for audio, video or subtitle data. + * + * The following fields must be set on frame before calling this function: + * - format (pixel format for video, sample format for audio) + * - width and height for video + * - nb_samples and channel_layout for audio + * - type (AVMediaType) + * + * This function will fill AVFrame.data and AVFrame.buf arrays and, if + * necessary, allocate and fill AVFrame.extended_data and AVFrame.extended_buf. + * For planar formats, one buffer will be allocated for each plane. + * + * @warning: if frame already has been allocated, calling this function will + * leak memory. In addition, undefined behavior can occur in certain + * cases. + * + * @param frame frame in which to store the new buffers. + * @param align Required buffer size alignment. If equal to 0, alignment will be + * chosen automatically for the current CPU. It is highly + * recommended to pass 0 here unless you know what you are doing. + * + * @return 0 on success, a negative AVERROR on error. + */ +int av_frame_get_buffer2(AVFrame *frame, int align); + /** * Check if the frame data is writable. * diff --git a/libavutil/subfmt.c b/libavutil/subfmt.c new file mode 100644 index 0000000000000..c72ebe2a431a4 --- /dev/null +++ b/libavutil/subfmt.c @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2021 softworkz + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include "common.h" +#include "subfmt.h" + +static const char sub_fmt_info[AV_SUBTITLE_FMT_NB][24] = { + [AV_SUBTITLE_FMT_UNKNOWN] = "Unknown subtitle format", + [AV_SUBTITLE_FMT_BITMAP] = "Graphical subtitles", + [AV_SUBTITLE_FMT_TEXT] = "Text subtitles (plain)", + [AV_SUBTITLE_FMT_ASS] = "Text subtitles (ass)", +}; + +const char *av_get_subtitle_fmt_name(enum AVSubtitleType sub_fmt) +{ + if (sub_fmt < 0 || sub_fmt >= AV_SUBTITLE_FMT_NB) + return NULL; + return sub_fmt_info[sub_fmt]; +} + +enum AVSubtitleType av_get_subtitle_fmt(const char *name) +{ + for (int i = 0; i < AV_SUBTITLE_FMT_NB; i++) + if (!strcmp(sub_fmt_info[i], name)) + return i; + return AV_SUBTITLE_FMT_NONE; +} diff --git a/libavutil/subfmt.h b/libavutil/subfmt.h new file mode 100644 index 0000000000000..3b8a0613b2925 --- /dev/null +++ b/libavutil/subfmt.h @@ -0,0 +1,115 @@ +/* + * Copyright (c) 2021 softworkz + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_SUBFMT_H +#define AVUTIL_SUBFMT_H + +#include + +#include "buffer.h" +#include "version.h" + +enum AVSubtitleType { + + /** + * Subtitle format unknown. + */ + AV_SUBTITLE_FMT_NONE = -1, + + /** + * Subtitle format unknown. + */ + AV_SUBTITLE_FMT_UNKNOWN = 0, +#if FF_API_OLD_SUBTITLES + SUBTITLE_NONE = 0, ///< Deprecated, use AV_SUBTITLE_FMT_NONE instead. +#endif + + /** + * Bitmap area in AVSubtitleRect.data, pixfmt AV_PIX_FMT_PAL8. + */ + AV_SUBTITLE_FMT_BITMAP = 1, +#if FF_API_OLD_SUBTITLES + SUBTITLE_BITMAP = 1, ///< Deprecated, use AV_SUBTITLE_FMT_BITMAP instead. +#endif + + /** + * Plain text in AVSubtitleRect.text. + */ + AV_SUBTITLE_FMT_TEXT = 2, +#if FF_API_OLD_SUBTITLES + SUBTITLE_TEXT = 2, ///< Deprecated, use AV_SUBTITLE_FMT_TEXT instead. +#endif + + /** + * Text Formatted as per ASS specification, contained AVSubtitleRect.ass. + */ + AV_SUBTITLE_FMT_ASS = 3, +#if FF_API_OLD_SUBTITLES + SUBTITLE_ASS = 3, ///< Deprecated, use AV_SUBTITLE_FMT_ASS instead. +#endif + + AV_SUBTITLE_FMT_NB, ///< number of subtitle formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions. +}; + +typedef struct AVSubtitleArea { +#define AV_NUM_BUFFER_POINTERS 1 + + enum AVSubtitleType type; + int flags; + + int x; ///< top left corner of area. + int y; ///< top left corner of area. + int w; ///< width of area. + int h; ///< height of area. + int nb_colors; ///< number of colors in bitmap palette (@ref pal). + + /** + * Buffers and line sizes for the bitmap of this subtitle. + * + * @{ + */ + AVBufferRef *buf[AV_NUM_BUFFER_POINTERS]; + int linesize[AV_NUM_BUFFER_POINTERS]; + /** + * @} + */ + + uint32_t pal[256]; ///< RGBA palette for the bitmap. + + char *text; ///< 0-terminated plain UTF-8 text + char *ass; ///< 0-terminated ASS/SSA compatible event line. + +} AVSubtitleArea; + +/** + * Return the name of sub_fmt, or NULL if sub_fmt is not + * recognized. + */ +const char *av_get_subtitle_fmt_name(enum AVSubtitleType sub_fmt); + +/** + * Return a subtitle format corresponding to name, or AV_SUBTITLE_FMT_NONE + * on error. + * + * @param name Subtitle format name. + */ +enum AVSubtitleType av_get_subtitle_fmt(const char *name); + +#endif /* AVUTIL_SUBFMT_H */ diff --git a/libavutil/version.h b/libavutil/version.h index cb0c928bd0bf8..009c628e35622 100644 --- a/libavutil/version.h +++ b/libavutil/version.h @@ -79,8 +79,8 @@ */ #define LIBAVUTIL_VERSION_MAJOR 57 -#define LIBAVUTIL_VERSION_MINOR 39 -#define LIBAVUTIL_VERSION_MICRO 101 +#define LIBAVUTIL_VERSION_MINOR 40 +#define LIBAVUTIL_VERSION_MICRO 100 #define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \ LIBAVUTIL_VERSION_MINOR, \ @@ -115,6 +115,7 @@ #define FF_API_OLD_CHANNEL_LAYOUT (LIBAVUTIL_VERSION_MAJOR < 58) #define FF_API_AV_FOPEN_UTF8 (LIBAVUTIL_VERSION_MAJOR < 58) #define FF_API_PKT_DURATION (LIBAVUTIL_VERSION_MAJOR < 58) +#define FF_API_OLD_SUBTITLES (LIBAVUTIL_VERSION_MAJOR < 58) /** * @} diff --git a/tests/ref/fate/filter-overlay-dvdsub-2397 b/tests/ref/fate/filter-overlay-dvdsub-2397 index 7df4f50776e90..0c0f35c634b94 100644 --- a/tests/ref/fate/filter-overlay-dvdsub-2397 +++ b/tests/ref/fate/filter-overlay-dvdsub-2397 @@ -489,368 +489,367 @@ 1, 3877, 3877, 10, 2013, 0x95a39f9c 1, 3887, 3887, 10, 2013, 0x4f7ea123 1, 3897, 3897, 10, 2013, 0x9efb9ba1 -0, 117, 117, 1, 518400, 0xbf8523da +0, 117, 117, 1, 518400, 0xc44e1d4c 1, 3907, 3907, 10, 2013, 0xf395b2cd 1, 3917, 3917, 10, 2013, 0x261a881e 1, 3927, 3927, 10, 2013, 0x7f2d9f72 1, 3937, 3937, 10, 2013, 0x0105b38d -0, 118, 118, 1, 518400, 0x41890ed6 +0, 118, 118, 1, 518400, 0xad1a084c 1, 3952, 3952, 10, 2013, 0x0e5db67e 1, 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240, 240, 1, 518400, 0x9d2e3977 +0, 205, 205, 1, 518400, 0x7e187e4f +0, 208, 208, 1, 518400, 0x0be0b2a2 diff --git a/tests/ref/fate/sub-dvb b/tests/ref/fate/sub-dvb index cbd1801d641c7..8f33c75d70e30 100644 --- a/tests/ref/fate/sub-dvb +++ b/tests/ref/fate/sub-dvb @@ -1,75 +1,93 @@ #tb 0: 1/1000000 #media_type 0: subtitle #codec_id 0: dvb_subtitle -0, 15600000, 15600000, 159000, 1168, 0xd0f89d82 -0, 15759000, 15759000, 159000, 14, 0x064900eb -0, 15760000, 15760000, 239000, 1544, 0xe60f1751 -0, 15999000, 15999000, 239000, 14, 0x0729010b -0, 16000000, 16000000, 339000, 1658, 0xbe343093 -0, 16339000, 16339000, 339000, 14, 0x0809012b -0, 16340000, 16340000, 599000, 2343, 0xc68f07ef -0, 16939000, 16939000, 599000, 14, 0x08e9014b -0, 16940000, 16940000, 459000, 2568, 0x0ee657b1 -0, 17399000, 17399000, 459000, 14, 0x09c9016b -0, 17400000, 17400000, 359000, 3422, 0xba5b63ce -0, 17759000, 17759000, 359000, 14, 0x0aa9018b -0, 17760000, 17760000, 219000, 5078, 0x95b19902 -0, 17979000, 17979000, 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359000, 14, 0x08e9014b +0, 31400000, 31400000, 479000, 14, 0x0959015b +0, 31879000, 31879000, 479000, 14, 0x09c9016b diff --git a/tests/ref/fate/sub-scc b/tests/ref/fate/sub-scc index 62cbf6fa4a499..b02e6e95b5e12 100644 --- a/tests/ref/fate/sub-scc +++ b/tests/ref/fate/sub-scc @@ -11,7 +11,6 @@ Style: Default,Monospace,16,&Hffffff,&Hffffff,&H0,&H0,0,0,0,0,100,100,0,0,3,1,0, [Events] Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text -Dialogue: 0,0:00:-2.-47,0:00:00.70,Default,,0,0,0,,{\an7}{\pos(76,228)}WE HAVE FOUND A WITCH !\N{\an7}{\pos(76,243)}MAY WE BURN HER ? Dialogue: 0,0:00:00.69,0:00:03.29,Default,,0,0,0,,{\an7}{\pos(115,228)}[ Crowd ]\N{\an7}{\pos(115,243)}BURN HER ! BURN HER ! Dialogue: 0,0:00:03.30,0:00:07.07,Default,,0,0,0,,{\an7}{\pos(38,197)}HOW DO YOU KNOW\N{\an7}{\pos(38,213)}SHE IS A WITCH ?\N{\an7}{\pos(153,243)}SHE LOOKS LIKE ONE ! Dialogue: 0,0:00:07.07,0:00:09.27,Default,,0,0,0,,{\an7}{\pos(192,228)}[ Shouting\N{\an7}{\pos(192,243)}\h\hAffirmations ] diff --git a/tests/ref/fate/sub2video b/tests/ref/fate/sub2video index 80abe9c90531a..7e89ee0ccd8b6 100644 --- a/tests/ref/fate/sub2video +++ b/tests/ref/fate/sub2video @@ -58,129 +58,1137 @@ 0, 47, 47, 1, 518400, 0xde69683f 0, 48, 48, 1, 518400, 0x7df08fba 0, 49, 49, 1, 518400, 0xbab197ea +0, 50, 50, 1, 518400, 0xbab197ea +0, 51, 51, 1, 518400, 0xbab197ea +0, 52, 52, 1, 518400, 0xbab197ea +0, 53, 53, 1, 518400, 0xbab197ea +0, 54, 54, 1, 518400, 0xbab197ea +0, 55, 55, 1, 518400, 0xbab197ea +0, 56, 56, 1, 518400, 0xbab197ea +0, 57, 57, 1, 518400, 0xbab197ea +0, 58, 58, 1, 518400, 0xbab197ea +0, 59, 59, 1, 518400, 0xbab197ea +0, 60, 60, 1, 518400, 0xbab197ea +0, 61, 61, 1, 518400, 0xbab197ea +0, 62, 62, 1, 518400, 0xbab197ea +0, 63, 63, 1, 518400, 0xbab197ea +0, 64, 64, 1, 518400, 0xbab197ea +0, 65, 65, 1, 518400, 0xbab197ea +0, 66, 66, 1, 518400, 0xbab197ea +0, 67, 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192640000, 1763000, 2506, 0xa458d6d4 0, 964, 964, 1, 518400, 0x9d5b9d69 -0, 972, 972, 1, 518400, 0xbab197ea +0, 965, 965, 1, 518400, 0x9d5b9d69 +0, 966, 966, 1, 518400, 0x9d5b9d69 +0, 967, 967, 1, 518400, 0x9d5b9d69 +0, 968, 968, 1, 518400, 0x9d5b9d69 +0, 969, 969, 1, 518400, 0x9d5b9d69 +0, 970, 970, 1, 518400, 0x9d5b9d69 +0, 971, 971, 1, 518400, 0x9d5b9d69 +0, 972, 972, 1, 518400, 0x9d5b9d69 +0, 973, 973, 1, 518400, 0xbab197ea +0, 974, 974, 1, 518400, 0xbab197ea +0, 975, 975, 1, 518400, 0xbab197ea 1, 195193000, 195193000, 1092000, 1074, 0x397ba9a8 0, 976, 976, 1, 518400, 0x923d1ce7 -0, 981, 981, 1, 518400, 0xbab197ea +0, 977, 977, 1, 518400, 0x923d1ce7 +0, 978, 978, 1, 518400, 0x923d1ce7 +0, 979, 979, 1, 518400, 0x923d1ce7 +0, 980, 980, 1, 518400, 0x923d1ce7 +0, 981, 981, 1, 518400, 0x923d1ce7 1, 196361000, 196361000, 1524000, 1715, 0x695ca41e 0, 982, 982, 1, 518400, 0x6e652cd2 -0, 989, 989, 1, 518400, 0xbab197ea +0, 983, 983, 1, 518400, 0x6e652cd2 +0, 984, 984, 1, 518400, 0x6e652cd2 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518400, 0xbab197ea +0, 1032, 1032, 1, 518400, 0xbab197ea +0, 1033, 1033, 1, 518400, 0xbab197ea +0, 1034, 1034, 1, 518400, 0xbab197ea +0, 1035, 1035, 1, 518400, 0xbab197ea +0, 1036, 1036, 1, 518400, 0xbab197ea +0, 1037, 1037, 1, 518400, 0xbab197ea +0, 1038, 1038, 1, 518400, 0xbab197ea +0, 1039, 1039, 1, 518400, 0xbab197ea +0, 1040, 1040, 1, 518400, 0xbab197ea +0, 1041, 1041, 1, 518400, 0xbab197ea +0, 1042, 1042, 1, 518400, 0xbab197ea +0, 1043, 1043, 1, 518400, 0xbab197ea +0, 1044, 1044, 1, 518400, 0xbab197ea +0, 1045, 1045, 1, 518400, 0xbab197ea +0, 1046, 1046, 1, 518400, 0xbab197ea +0, 1047, 1047, 1, 518400, 0xbab197ea +0, 1048, 1048, 1, 518400, 0xbab197ea +0, 1049, 1049, 1, 518400, 0xbab197ea +0, 1050, 1050, 1, 518400, 0xbab197ea +0, 1051, 1051, 1, 518400, 0xbab197ea +0, 1052, 1052, 1, 518400, 0xbab197ea 0, 1053, 1053, 1, 518400, 0x3de86ab7 1, 210600000, 210600000, 1831000, 665, 0x55580135 -0, 1062, 1062, 1, 518400, 0xbab197ea +0, 1054, 1054, 1, 518400, 0x3de86ab7 +0, 1055, 1055, 1, 518400, 0x3de86ab7 +0, 1056, 1056, 1, 518400, 0x3de86ab7 +0, 1057, 1057, 1, 518400, 0x3de86ab7 +0, 1058, 1058, 1, 518400, 0x3de86ab7 +0, 1059, 1059, 1, 518400, 0x3de86ab7 +0, 1060, 1060, 1, 518400, 0x3de86ab7 +0, 1061, 1061, 1, 518400, 0x3de86ab7 +0, 1062, 1062, 1, 518400, 0x3de86ab7 +0, 1063, 1063, 1, 518400, 0xbab197ea +0, 1064, 1064, 1, 518400, 0xbab197ea +0, 1065, 1065, 1, 518400, 0xbab197ea +0, 1066, 1066, 1, 518400, 0xbab197ea +0, 1067, 1067, 1, 518400, 0xbab197ea +0, 1068, 1068, 1, 518400, 0xbab197ea +0, 1069, 1069, 1, 518400, 0xbab197ea +0, 1070, 1070, 1, 518400, 0xbab197ea +0, 1071, 1071, 1, 518400, 0xbab197ea +0, 1072, 1072, 1, 518400, 0xbab197ea +0, 1073, 1073, 1, 518400, 0xbab197ea 1, 214771000, 214771000, 1558000, 1216, 0x50d1f6c5 0, 1074, 1074, 1, 518400, 0x8c320e68 -0, 1082, 1082, 1, 518400, 0xbab197ea +0, 1075, 1075, 1, 518400, 0x8c320e68 +0, 1076, 1076, 1, 518400, 0x8c320e68 +0, 1077, 1077, 1, 518400, 0x8c320e68 +0, 1078, 1078, 1, 518400, 0x8c320e68 +0, 1079, 1079, 1, 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0xbab197ea +0, 1106, 1106, 1, 518400, 0xbab197ea +0, 1107, 1107, 1, 518400, 0xbab197ea +0, 1108, 1108, 1, 518400, 0xbab197ea +0, 1109, 1109, 1, 518400, 0xbab197ea +0, 1110, 1110, 1, 518400, 0xbab197ea +0, 1111, 1111, 1, 518400, 0xbab197ea +0, 1112, 1112, 1, 518400, 0xbab197ea +0, 1113, 1113, 1, 518400, 0xbab197ea +0, 1114, 1114, 1, 518400, 0xbab197ea +0, 1115, 1115, 1, 518400, 0xbab197ea +0, 1116, 1116, 1, 518400, 0xbab197ea +0, 1117, 1117, 1, 518400, 0xbab197ea +0, 1118, 1118, 1, 518400, 0xbab197ea +0, 1119, 1119, 1, 518400, 0xbab197ea +0, 1120, 1120, 1, 518400, 0xbab197ea +0, 1121, 1121, 1, 518400, 0xbab197ea +0, 1122, 1122, 1, 518400, 0xbab197ea +0, 1123, 1123, 1, 518400, 0xbab197ea +0, 1124, 1124, 1, 518400, 0xbab197ea +0, 1125, 1125, 1, 518400, 0xbab197ea +0, 1126, 1126, 1, 518400, 0xbab197ea +0, 1127, 1127, 1, 518400, 0xbab197ea 0, 1128, 1128, 1, 518400, 0x81e977b2 1, 225640000, 225640000, 2127000, 2133, 0x670c11a5 -0, 1139, 1139, 1, 518400, 0xbab197ea +0, 1129, 1129, 1, 518400, 0x81e977b2 +0, 1130, 1130, 1, 518400, 0x81e977b2 +0, 1131, 1131, 1, 518400, 0x81e977b2 +0, 1132, 1132, 1, 518400, 0x81e977b2 +0, 1133, 1133, 1, 518400, 0x81e977b2 +0, 1134, 1134, 1, 518400, 0x81e977b2 +0, 1135, 1135, 1, 518400, 0x81e977b2 +0, 1136, 1136, 1, 518400, 0x81e977b2 +0, 1137, 1137, 1, 518400, 0x81e977b2 +0, 1138, 1138, 1, 518400, 0x81e977b2 +0, 1139, 1139, 1, 518400, 0xb046dd30 1, 227834000, 227834000, 1262000, 1264, 0xc1d9fc57 0, 1140, 1140, 1, 518400, 0xb046dd30 -0, 1145, 1145, 1, 518400, 0xbab197ea +0, 1141, 1141, 1, 518400, 0xb046dd30 diff --git a/tests/ref/fate/sub2video_basic b/tests/ref/fate/sub2video_basic index 5f72e292c9c6e..9bd4e8b114b7f 100644 --- a/tests/ref/fate/sub2video_basic +++ b/tests/ref/fate/sub2video_basic @@ -1,95 +1,1149 @@ -#tb 0: 1/25 +#tb 0: 1/5 #media_type 0: video #codec_id 0: rawvideo #dimensions 0: 720x480 -#sar 0: 0/1 -0, 3312, 3312, 1, 1382400, 0x00000000 -0, 3312, 3312, 1, 1382400, 0x8c93c2ba -0, 3436, 3436, 1, 1382400, 0x00000000 -0, 3684, 3684, 1, 1382400, 0xb02e32ca -0, 3802, 3802, 1, 1382400, 0x00000000 -0, 4520, 4520, 1, 1382400, 0x83b71116 -0, 4584, 4584, 1, 1382400, 0x00000000 -0, 4586, 4586, 1, 1382400, 0x85547fd1 -0, 4645, 4645, 1, 1382400, 0x00000000 -0, 4648, 4648, 1, 1382400, 0x00000000 -0, 4648, 4648, 1, 1382400, 0xb6a8f181 -0, 4715, 4715, 1, 1382400, 0x00000000 -0, 4717, 4717, 1, 1382400, 0xb64d1a2c -0, 4748, 4748, 1, 1382400, 0x00000000 -0, 4750, 4750, 1, 1382400, 0x7b37ecf3 -0, 4792, 4792, 1, 1382400, 0x00000000 -0, 4993, 4993, 1, 1382400, 0xdc025bd1 -0, 5027, 5027, 1, 1382400, 0x00000000 -0, 5029, 5029, 1, 1382400, 0x688b294d -0, 5068, 5068, 1, 1382400, 0x00000000 -0, 5070, 5070, 1, 1382400, 0xa2b33d1b -0, 5117, 5117, 1, 1382400, 0x00000000 -0, 5119, 5119, 1, 1382400, 0xb3e525e3 -0, 5168, 5168, 1, 1382400, 0x00000000 -0, 5170, 5170, 1, 1382400, 0xaa8fbdd7 -0, 5216, 5216, 1, 1382400, 0x00000000 -0, 5218, 5218, 1, 1382400, 0x7b7f26dd -0, 5249, 5249, 1, 1382400, 0x00000000 -0, 5251, 5251, 1, 1382400, 0x15e2f836 -0, 5289, 5289, 1, 1382400, 0x00000000 -0, 5291, 5291, 1, 1382400, 0x0fee9b0c -0, 5358, 5358, 1, 1382400, 0x00000000 -0, 5360, 5360, 1, 1382400, 0x89d62791 -0, 5429, 5429, 1, 1382400, 0x00000000 -0, 5431, 5431, 1, 1382400, 0xa6a9fd74 -0, 5490, 5490, 1, 1382400, 0x00000000 -0, 5491, 5491, 1, 1382400, 0x7896178d -0, 5537, 5537, 1, 1382400, 0x00000000 -0, 5588, 5588, 1, 1382400, 0x01751a52 -0, 5647, 5647, 1, 1382400, 0x00000000 -0, 5688, 5688, 1, 1382400, 0xa3959c6f -0, 5770, 5770, 1, 1382400, 0x00000000 -0, 5772, 5772, 1, 1382400, 0x3d3ea47b -0, 5826, 5826, 1, 1382400, 0x00000000 -0, 5828, 5828, 1, 1382400, 0x593f8b24 -0, 5931, 5931, 1, 1382400, 0x00000000 -0, 5933, 5933, 1, 1382400, 0x171f05ba -0, 6001, 6001, 1, 1382400, 0x00000000 -0, 6003, 6003, 1, 1382400, 0xb014cdf1 -0, 6054, 6054, 1, 1382400, 0x00000000 -0, 6839, 6839, 1, 1382400, 0xd918e667 -0, 6880, 6880, 1, 1382400, 0x00000000 -0, 7386, 7386, 1, 1382400, 0xc9406331 -0, 7419, 7419, 1, 1382400, 0x00000000 -0, 7501, 7501, 1, 1382400, 0xaf08b10d -0, 7549, 7549, 1, 1382400, 0x00000000 -0, 7551, 7551, 1, 1382400, 0x00000000 -0, 7551, 7551, 1, 1382400, 0x853a9d93 -0, 7589, 7589, 1, 1382400, 0x00000000 -0, 7605, 7605, 1, 1382400, 0x7491a87d -0, 7647, 7647, 1, 1382400, 0x00000000 -0, 7649, 7649, 1, 1382400, 0xf7383c58 -0, 7697, 7697, 1, 1382400, 0x00000000 -0, 7699, 7699, 1, 1382400, 0xe66be411 -0, 7743, 7743, 1, 1382400, 0x00000000 -0, 8032, 8032, 1, 1382400, 0xd6850362 -0, 8082, 8082, 1, 1382400, 0x00000000 -0, 8084, 8084, 1, 1382400, 0x3e1ed109 -0, 8115, 8115, 1, 1382400, 0x00000000 -0, 8116, 8116, 1, 1382400, 0x39c1b7bd -0, 8160, 8160, 1, 1382400, 0x00000000 -0, 8180, 8180, 1, 1382400, 0x35b85f2e -0, 8207, 8207, 1, 1382400, 0x00000000 -0, 8209, 8209, 1, 1382400, 0x00000000 -0, 8209, 8209, 1, 1382400, 0x83f103e5 -0, 8247, 8247, 1, 1382400, 0x00000000 -0, 8249, 8249, 1, 1382400, 0xbc1ca9b3 -0, 8278, 8278, 1, 1382400, 0x00000000 -0, 8281, 8281, 1, 1382400, 0x94d4a51e -0, 8321, 8321, 1, 1382400, 0x00000000 -0, 8323, 8323, 1, 1382400, 0xf88cdfde -0, 8367, 8367, 1, 1382400, 0x00000000 -0, 8565, 8565, 1, 1382400, 0xdd51423b -0, 8611, 8611, 1, 1382400, 0x00000000 -0, 8669, 8669, 1, 1382400, 0x08259fa4 -0, 8708, 8708, 1, 1382400, 0x00000000 -0, 8941, 8941, 1, 1382400, 0x1663fa34 -0, 8994, 8994, 1, 1382400, 0x00000000 -0, 8996, 8996, 1, 1382400, 0xda2ceb55 -0, 9027, 9027, 1, 1382400, 0x00000000 +#sar 0: 1/1 +0, 662, 662, 1, 1382400, 0xc637b893 +0, 663, 663, 1, 1382400, 0xc637b893 +0, 664, 664, 1, 1382400, 0xc637b893 +0, 665, 665, 1, 1382400, 0xc637b893 +0, 666, 666, 1, 1382400, 0xc637b893 +0, 667, 667, 1, 1382400, 0xc637b893 +0, 668, 668, 1, 1382400, 0xc637b893 +0, 669, 669, 1, 1382400, 0xc637b893 +0, 670, 670, 1, 1382400, 0xc637b893 +0, 671, 671, 1, 1382400, 0xc637b893 +0, 672, 672, 1, 1382400, 0xc637b893 +0, 673, 673, 1, 1382400, 0xc637b893 +0, 674, 674, 1, 1382400, 0xc637b893 +0, 675, 675, 1, 1382400, 0xc637b893 +0, 676, 676, 1, 1382400, 0xc637b893 +0, 677, 677, 1, 1382400, 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1792, 1, 1382400, 0x43ef5128 +0, 1793, 1793, 1, 1382400, 0x43ef5128 +0, 1794, 1794, 1, 1382400, 0x43ef5128 +0, 1795, 1795, 1, 1382400, 0x43ef5128 +0, 1796, 1796, 1, 1382400, 0x43ef5128 +0, 1797, 1797, 1, 1382400, 0x43ef5128 +0, 1798, 1798, 1, 1382400, 0x43ef5128 +0, 1799, 1799, 1, 1382400, 0x3c3e3819 +0, 1800, 1800, 1, 1382400, 0x3c3e3819 +0, 1801, 1801, 1, 1382400, 0x3c3e3819 +0, 1802, 1802, 1, 1382400, 0x3c3e3819 +0, 1803, 1803, 1, 1382400, 0x3c3e3819 +0, 1804, 1804, 1, 1382400, 0x3c3e3819 +0, 1805, 1805, 1, 1382400, 0x00000000 diff --git a/tests/ref/fate/sub2video_time_limited b/tests/ref/fate/sub2video_time_limited index 9fb6fb06f9252..2fbd91a7eb60d 100644 --- a/tests/ref/fate/sub2video_time_limited +++ b/tests/ref/fate/sub2video_time_limited @@ -1,8 +1,80 @@ -#tb 0: 1/25 +#tb 0: 1/5 #media_type 0: video #codec_id 0: rawvideo #dimensions 0: 1920x1080 -#sar 0: 0/1 -0, 2, 2, 1, 8294400, 0x00000000 +#sar 0: 1/1 +0, 0, 0, 1, 8294400, 0xa87c518f +0, 1, 1, 1, 8294400, 0xa87c518f 0, 2, 2, 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