ImageTools.IO.Gif.GifDecoder.ReadImageDescriptor C# (CSharp) Method

        private GifImageDescriptor ReadImageDescriptor()
        {
            byte[] buffer = new byte[9];

            _stream.Read(buffer, 0, buffer.Length);

            byte packed = buffer[8];

            GifImageDescriptor imageDescriptor = new GifImageDescriptor();
            imageDescriptor.Left = BitConverter.ToInt16(buffer, 0);
            imageDescriptor.Top = BitConverter.ToInt16(buffer, 2);
            imageDescriptor.Width = BitConverter.ToInt16(buffer, 4);
            imageDescriptor.Height = BitConverter.ToInt16(buffer, 6);
            imageDescriptor.LocalColorTableFlag = ((packed & 0x80) >> 7) == 1;
            imageDescriptor.LocalColorTableSize = 2 << (packed & 0x07);
            imageDescriptor.InterlaceFlag = ((packed & 0x40) >> 6) == 1;

            return imageDescriptor;
        }