internal static extern unsafe DecoderStatus DecompressAlphaImage( byte *compressedAlphaImage, UIntPtr compressedAlphaImageSize, [In, Out] DecodeInfo decodeInfo, [In] ref BitmapData fullImage);
internal static extern unsafe DecoderStatus DecompressColorImage( byte *compressedColorImage, UIntPtr compressedColorImageSize, IntPtr colorInfo_MustBeZero, [In, Out] DecodeInfo decodeInfo, [In] ref BitmapData fullImage);