decodePVR3 method

Image? decodePVR3(List<int> data)

Implementation

Image? decodePVR3(List<int> data) {
  //const PVR3_PVRTC_2BPP_RGB = 0;
  //const PVR3_PVRTC_2BPP_RGBA = 1;
  const PVR3_PVRTC_4BPP_RGB = 2;
  const PVR3_PVRTC_4BPP_RGBA = 3;
  /*const PVR3_PVRTC2_2BPP = 4;
  const PVR3_PVRTC2_4BPP = 5;
  const PVR3_ETC1 = 6;
  const PVR3_DXT1 = 7;
  const PVR3_DXT2 = 8;
  const PVR3_DXT3 = 9;
  const PVR3_DXT4 = 10;
  const PVR3_DXT5 = 11;
  const PVR3_BC1 = 7;
  const PVR3_BC2 = 9;
  const PVR3_BC3 = 11;
  const PVR3_BC4 = 12;
  const PVR3_BC5 = 13;
  const PVR3_BC6 = 14;
  const PVR3_BC7 = 15;
  const PVR3_UYVY = 16;
  const PVR3_YUY2 = 17;
  const PVR3_BW_1BPP = 18;
  const PVR3_R9G9B9E5 = 19;
  const PVR3_RGBG8888 = 20;
  const PVR3_GRGB8888 = 21;
  const PVR3_ETC2_RGB = 22;
  const PVR3_ETC2_RGBA = 23;
  const PVR3_ETC2_RGB_A1 = 24;
  const PVR3_EAC_R11_U = 25;
  const PVR3_EAC_R11_S = 26;
  const PVR3_EAC_RG11_U = 27;
  const PVR3_EAC_RG11_S = 28;*/

  final input = InputBuffer(data);

  // Header
  final version = input.readUint32();
  if (version != 0x03525650) {
    return null;
  }

  /*int flags =*/ input.readUint32();
  final format = input.readUint32();
  final order = [
    input.readByte(),
    input.readByte(),
    input.readByte(),
    input.readByte()
  ];
  /*int colorspace =*/ input.readUint32();
  /*int channeltype =*/ input.readUint32();
  final height = input.readUint32();
  final width = input.readUint32();
  /*int depth =*/ input.readUint32();
  /*int num_surfaces =*/ input.readUint32();
  /*int num_faces =*/ input.readUint32();
  /*int mipcount =*/ input.readUint32();
  final metadata_size = input.readUint32();

  input.skip(metadata_size);

  if (order[0] == 0) {
    switch (format) {
      case PVR3_PVRTC_4BPP_RGB:
        return decodeRgb4bpp(width, height, input.toUint8List());
      case PVR3_PVRTC_4BPP_RGBA:
        return decodeRgba4bpp(width, height, input.toUint8List());
      /*case PVR3_PVRTC_2BPP_RGB:
        return null;
      case PVR3_PVRTC_2BPP_RGBA:
        return null;
      case PVR3_PVRTC2_2BPP:
        return null;
      case PVR3_PVRTC2_4BPP:
        return null;
      case PVR3_ETC1:
        return null;
      case PVR3_DXT1:
        return null;
      case PVR3_DXT2:
        return null;
      case PVR3_DXT3:
        return null;
      case PVR3_DXT4:
        return null;
      case PVR3_DXT5:
        return null;
      case PVR3_BC1:
        return null;
      case PVR3_BC2:
        return null;
      case PVR3_BC3:
        return null;
      case PVR3_BC4:
        return null;
      case PVR3_BC5:
        return null;
      case PVR3_BC6:
        return null;
      case PVR3_BC7:
        return null;
      case PVR3_UYVY:
        return null;
      case PVR3_YUY2:
        return null;
      case PVR3_BW_1BPP:
        return null;
      case PVR3_R9G9B9E5:
        return null;
      case PVR3_RGBG8888:
        return null;
      case PVR3_GRGB8888:
        return null;
      case PVR3_ETC2_RGB:
        return null;
      case PVR3_ETC2_RGBA:
        return null;
      case PVR3_ETC2_RGB_A1:
        return null;
      case PVR3_EAC_R11_U:
        return null;
      case PVR3_EAC_R11_S:
        return null;
      case PVR3_EAC_RG11_U:
        return null;
      case PVR3_EAC_RG11_S:
        return null;*/
    }
  }

  return null;
}