captureFrame method

@override Future<ByteBuffer> captureFrame()

Implementation

@override
Future<ByteBuffer> captureFrame() async {
  final imageCapture = html.ImageCapture(jsTrack);
  final bitmap = await imageCapture.grabFrame();
  final canvas = html.CanvasElement();
  canvas.width = bitmap.width;
  canvas.height = bitmap.height;
  final renderer =
      canvas.getContext('bitmaprenderer') as html.ImageBitmapRenderingContext;
  js.callMethod(renderer, 'transferFromImageBitmap', [bitmap]);
  final blod = await canvas.toBlob();
  var array =
      await js.promiseToFuture(js.callMethod(blod, 'arrayBuffer', []));
  bitmap.close();
  return array;
}