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

        private void ReadLogicalScreenDescriptor()
        {
            byte[] buffer = new byte[7];

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

            byte packed = buffer[4];

            _logicalScreenDescriptor = new GifLogicalScreenDescriptor();
            _logicalScreenDescriptor.Width = BitConverter.ToInt16(buffer, 0);
            _logicalScreenDescriptor.Height = BitConverter.ToInt16(buffer, 2);
            _logicalScreenDescriptor.Background = buffer[5];
            _logicalScreenDescriptor.GlobalColorTableFlag = ((packed & 0x80) >> 7) == 1;
            _logicalScreenDescriptor.GlobalColorTableSize = 2 << (packed & 0x07);
        }