SIPSorcery.Net.RTPChannel.CreateLowQualityRtpJpegHeader C# (CSharp) Méthode

        private static byte[] CreateLowQualityRtpJpegHeader(uint fragmentOffset, int quality, int width, int height)
        {
            byte[] rtpJpegHeader = new byte[8] { 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00 };

            // Byte 0: Type specific
            //http://tools.ietf.org/search/rfc2435#section-3.1.1

            // Bytes 1 to 3: Three byte fragment offset
            //http://tools.ietf.org/search/rfc2435#section-3.1.2

            if (BitConverter.IsLittleEndian) fragmentOffset = NetConvert.DoReverseEndian(fragmentOffset);

            byte[] offsetBytes = BitConverter.GetBytes(fragmentOffset);
            rtpJpegHeader[1] = offsetBytes[2];
            rtpJpegHeader[2] = offsetBytes[1];
            rtpJpegHeader[3] = offsetBytes[0];

            // Byte 4: JPEG Type.
            //http://tools.ietf.org/search/rfc2435#section-3.1.3

            //Byte 5: http://tools.ietf.org/search/rfc2435#section-3.1.4 (Q)
            rtpJpegHeader[5] = (byte)quality;

            // Byte 6: http://tools.ietf.org/search/rfc2435#section-3.1.5 (Width)
            rtpJpegHeader[6] = (byte)(width / 8);

            // Byte 7: http://tools.ietf.org/search/rfc2435#section-3.1.6 (Height)
            rtpJpegHeader[7] = (byte)(height / 8);

            return rtpJpegHeader;
        }