startDecode method

@override DecodeInfo? startDecode(Uint8List bytes)

Start decoding the data as an animation sequence, but don't actually process the frames until they are requested with decodeFrame.

Implementation

@override
DecodeInfo? startDecode(Uint8List bytes) {
  info = TgaInfo();
  input = InputBuffer(bytes);

  final header = input.readBytes(18);
  info!.read(header);
  if (!info!.isValid()) {
    return null;
  }

  input.skip(info!.idLength);

  // Decode colormap
  if (info!.hasColorMap) {
    final size = info!.colorMapLength * (info!.colorMapDepth >> 3);
    info!.colorMap = input.readBytes(size).toUint8List();
  }

  info!.imageOffset = input.offset;

  return info;
}