public static RtpPacket FromBuffer(byte[] buffer, int offset, int?length = null)
{
var rtpPacket = new RtpPacket();
rtpPacket.Header = RtpHeader.FromBuffer(buffer, offset);
int payloadStartIndex = offset + rtpPacket.Header.Length;
int payloadLength;
if (length != null)
{
payloadLength = length.Value - payloadStartIndex;
}
else
{
// Check payload to determine its length.
switch (rtpPacket.Header.PayloadType.Number)
{
default:
payloadLength = buffer.Length - payloadStartIndex;
break;
}
}
rtpPacket.Payload = new ArraySegment <byte>(buffer, payloadStartIndex, payloadLength);
return(rtpPacket);
}
public static RtpHeader FromBuffer(byte[] buffer, int offset)
{
var header = new RtpHeader();
header.Buffer = buffer;
header.Offset = offset;
header.Length = 12; // Set minimal header length.
// Check if Extension Bit is set.
if (header.HasExtension)
{
header.Length += 4;
}
// Check CSRC
header.Length += header.CsrcCount * 4;
return(header);
}
public RtpPacket(byte[] buffer, int offset, PayloadType payloadType = null, uint ssrc = 0, ushort sequenceNumber = 0, uint timestamp = 0, bool marker = false, uint?extension = null, uint[] csrc = null)
{
Header = new RtpHeader(buffer, offset, payloadType, ssrc, sequenceNumber, timestamp, marker, extension, csrc);
}