genThumbnail function

Future<ThumbnailResult> genThumbnail(ThumbnailRequest r)

Implementation

Future<ThumbnailResult> genThumbnail(ThumbnailRequest r) async {
  //WidgetsFlutterBinding.ensureInitialized();
  Uint8List? bytes;
  final Completer<ThumbnailResult> completer = Completer();
  if (r.thumbnailPath != null) {
    final thumbnailPath = await VideoThumbnail.thumbnailFile(
        video: r.video!,
        headers: {
          "USERHEADER1": "user defined header1",
          "USERHEADER2": "user defined header2",
        },
        thumbnailPath: r.thumbnailPath,
        imageFormat: r.imageFormat!,
        maxHeight: r.maxHeight!,
        maxWidth: r.maxWidth!,
        timeMs: r.timeMs!,
        quality: r.quality!);


    final file = File(thumbnailPath!);
    bytes = file.readAsBytesSync();
  } else {
    bytes = await VideoThumbnail.thumbnailData(
        video: r.video!,
        headers: {
          "USERHEADER1": "user defined header1",
          "USERHEADER2": "user defined header2",
        },
        imageFormat: r.imageFormat!,
        maxHeight: r.maxHeight!,
        maxWidth: r.maxWidth!,
        timeMs: r.timeMs!,
        quality: r.quality!);
  }

  int _imageDataSize = bytes!.length;

  final _image = Image.memory(bytes);
  _image.image
      .resolve(ImageConfiguration())
      .addListener(ImageStreamListener((ImageInfo info, bool _) {
    completer.complete(ThumbnailResult(
      image: _image,
      dataSize: _imageDataSize,
      height: info.image.height,
      width: info.image.width,
    ));
  }));
  return completer.future;
}