encodePvr method

Uint8List encodePvr(Image bitmap, { int format = PVR_AUTO, })

Implementation

Uint8List encodePvr(Image bitmap, {int format = PVR_AUTO}) {
  final output = OutputBuffer();

  late dynamic pvrtc;
  if (format == PVR_AUTO) {
    if (bitmap.channels == Channels.rgb) {
      pvrtc = encodeRgb4Bpp(bitmap);
      format = PVR_RGB_4BPP;
    } else {
      pvrtc = encodeRgba4Bpp(bitmap);
      format = PVR_RGBA_4BPP;
    }
  } else if (format == PVR_RGB_2BPP) {
    //pvrtc = encodeRgb2Bpp(bitmap);
    pvrtc = encodeRgb4Bpp(bitmap);
  } else if (format == PVR_RGBA_2BPP) {
    //pvrtc = encodeRgba2Bpp(bitmap);
    pvrtc = encodeRgba4Bpp(bitmap);
  } else if (format == PVR_RGB_4BPP) {
    pvrtc = encodeRgb4Bpp(bitmap);
  } else if (format == PVR_RGBA_4BPP) {
    pvrtc = encodeRgba4Bpp(bitmap);
  }

  const version = 55727696;
  const flags = 0;
  final pixelFormat = format;
  const channelOrder = 0;
  const colorSpace = 0;
  const channelType = 0;
  final height = bitmap.height;
  final width = bitmap.width;
  const depth = 1;
  const numSurfaces = 1;
  const numFaces = 1;
  const mipmapCount = 1;
  const metaDataSize = 0;

  output.writeUint32(version);
  output.writeUint32(flags);
  output.writeUint32(pixelFormat);
  output.writeUint32(channelOrder);
  output.writeUint32(colorSpace);
  output.writeUint32(channelType);
  output.writeUint32(height);
  output.writeUint32(width);
  output.writeUint32(depth);
  output.writeUint32(numSurfaces);
  output.writeUint32(numFaces);
  output.writeUint32(mipmapCount);
  output.writeUint32(metaDataSize);

  output.writeBytes(pvrtc as List<int>);

  return output.getBytes() as Uint8List;
}