OOM when audio duration too long

[liushuai42]

Device: Galaxy S24 SM-S921U with Android 14 One UI 6.1

Audio Duration: 2:48:50 (about 3hours)

void audioDecoderTest() async {
  FilePickerResult? result = await FilePicker.pickFiles(
    type: FileType.custom,
    allowedExtensions: ['wav'],
  );
  if (result == null) {
    return;
  }
  final String? chooseFilePath = result.files.first.path;
  if (chooseFilePath == null) {
    toast('No file selected');
    return;
  }

  try {
    final file = File(chooseFilePath);
    if (!await file.exists()) {
      toast('File not exists');
      return;
    }

    showBaseLoading();
    final tempDir = await getTemporaryDirectory();
    String outputPath = path.join(
      tempDir.path,
      '${path.basenameWithoutExtension(chooseFilePath)}.m4a',
    );

    LogUtils.d('Start: $chooseFilePath => $outputPath');
    outputPath = await AudioDecoder.convertToM4a(chooseFilePath, outputPath);
    LogUtils.d('Done: $chooseFilePath => $outputPath');
    await ShareUtil.shareFiles([outputPath], subject: 'm4a audio');
  } catch (e) {
    LogUtils.d('audioDecoderTest failed: $chooseFilePath: $e');
    toast('Exception: $e');
  } finally {
    dismissBaseLoading();
  }
}

E FATAL EXCEPTION: Thread-9
Process: com.halliday.oasis, PID: 9282
java.lang.OutOfMemoryError: Failed to allocate a 1936 byte allocation with 1531696 free bytes and 1495KB until OOM, target footprint 268435456, growth limit 268435456; giving up on allocation because <1% of heap free after GC.
at nl.silversoft.audio_decoder.AudioDecoderPlugin.performM4aConversion(AudioDecoderPlugin.kt:641)
at nl.silversoft.audio_decoder.AudioDecoderPlugin.onMethodCall$lambda$1(AudioDecoderPlugin.kt:86)
at nl.silversoft.audio_decoder.AudioDecoderPlugin.$r8$lambda$aj7LZ3s15fvya7Rb5xVInwT1Ri4(AudioDecoderPlugin.kt:0)
at nl.silversoft.audio_decoder.AudioDecoderPlugin$$ExternalSyntheticLambda29.invoke(D8$$SyntheticClass:0)
at kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)