|
public SendRaw ( |
||
| message | ||
| client | ||
| isAudio | bool | |
| isData | bool | |
| return | bool | |
public bool SendRR(bool isAudio)
{
if (_forceTcp)
{
return(true);
}
/*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* header |V=2|P| RC | PT=RR=201 | length |0
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| SSRC of packet sender |4
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
| report | SSRC_1 (SSRC of first source) |8
| block +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| 1 | fraction lost | cumulative number of packets lost |12
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| extended highest sequence number received |16
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| interarrival jitter |20
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| last SR (LSR) |24
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| delay since last SR (DLSR) |28
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| header |V=2|P| SC | PT=SDES=202 | length |
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
| chunk | SSRC/CSRC_1 |
| 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| SDES items |
| ... |
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
| chunk | SSRC/CSRC_2 |
| 2 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| SDES items |
| ... |
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
*/
var rtp = isAudio ? _rtpAudio : _rtpVideo;
var rtcp = isAudio ? _rtcpAudio : _rtcpVideo;
var buffer = isAudio ? _audioRR : _videoRR;
//1. prepare the buffer
buffer.Write(12, rtp.SSRC); //SSRC_1 (SSRC of first source)
buffer.Write(20, rtp.ExtendedSeq); //extended highest sequence number received
buffer.Write(28, rtcp.LastSenderReport); //last SR (LSR)
if (_forceTcp)
{
return(_rtsp.SendRaw(buffer));
}
else
{
if (rtcp.LastAddress != null)
{
if (rtcp.IOHandler.Socket.SendTo(buffer, 4, 56, SocketFlags.None, rtcp.LastAddress) != 56)
{
FATAL("Unable to send data");
return(false);
}
}
else
{
//WARN("Skip this RR because we don't have a valid address yet");
}
return(true);
}
}
public bool FeedData(ref MsgHdr message, double absoluteTimestamp, bool isAudio)
{
if (absoluteTimestamp == 0)
{
return(true);
}
double rate = isAudio ? OutStream.Capabilities.Samplerate : 90000.0;
var ssrc = isAudio ? OutStream.AudioSSRC : OutStream.VideoSSRC;
var messageLength = message.Buffers.Sum(t => t.Length);
if (!_rtpClient.hasAudio && !_rtpClient.hasVideo)
{
return(true);
}
var packetsCount = isAudio ? _rtpClient.audioPacketsCount : _rtpClient.videoPacketsCount;
var bytesCount = isAudio ? _rtpClient.audioBytesCount : _rtpClient.videoBytesCount;
var startRTP = isAudio ? _rtpClient.audioStartRTP : _rtpClient.videoStartRTP;
if (startRTP == 0xffffffff)
{
startRTP = message.Buffers[0].ReadUInt(4);
if (isAudio)
{
_rtpClient.audioStartRTP = startRTP;
}
else
{
_rtpClient.videoStartRTP = startRTP;
}
if (isAudio)
{
_rtpClient.audioStartTS = absoluteTimestamp;
}
else
{
_rtpClient.videoStartTS = absoluteTimestamp;
}
}
if ((packetsCount % 500) == 0)
{
//FINEST("Send %c RTCP: %u", isAudio ? 'A' : 'V', packetsCount);
_rtcpMessage.Buffers[0].Write(4, ssrc);
//NTP
var integerValue = (uint)(absoluteTimestamp / 1000.0);
double fractionValue = (absoluteTimestamp / 1000.0 - ((uint)(absoluteTimestamp / 1000.0))) * 4294967296.0;
var ntpVal = (ulong)(_startupTime.SecondsFrom1970() + integerValue + 2208988800UL) << 32;
ntpVal |= (uint)fractionValue;
_rtcpNTP.Buffer.Write(_rtcpNTP.Offset, ntpVal);
//RTP
var rtp = (ulong)((integerValue + fractionValue / 4294967296.0) * rate);
rtp &= 0xffffffff;
_rtcpRTP.Buffer.Write(_rtcpRTP.Offset, rtp);
//packet count
_rtcpSPC.Buffer.Write(_rtcpSPC.Offset, packetsCount);
_rtcpSOC.Buffer.Write(_rtcpSOC.Offset, bytesCount);
//octet count
// FINEST("\n%s", STR(IOBuffer::DumpBuffer(((uint8_t *) _rtcpMessage.MSGHDR_MSG_IOV[0].IOVEC_IOV_BASE),
// _rtcpMessage.MSGHDR_MSG_IOV[0].IOVEC_IOV_LEN)));
if (_rtpClient.isUdp)
{
var rtcpSocket = isAudio ? _audioRTCPSocket : _videoRTCPSocket;
var rtcpAddress = isAudio ? _rtpClient.audioRtcpAddress : _rtpClient.videoRtcpAddress;
if (rtcpSocket.SendTo(_rtcpMessage.TotalBuffer, SocketFlags.None, rtcpAddress) < 0)
{
FATAL("Unable to send message");
return(false);
}
}
else
{
if (_rtspProtocol != null)
{
if (!_rtspProtocol.SendRaw(_rtcpMessage, ref _rtpClient, isAudio, false))
{
FATAL("Unable to send raw rtcp audio data");
return(false);
}
}
}
}
if (_rtpClient.isUdp)
{
var dataFd = isAudio ? _audioDataSocket : _videoDataSocket;
var dataAddress = isAudio ? _rtpClient.audioDataAddress : _rtpClient.videoDataAddress;
if (dataFd.SendTo(message.TotalBuffer, SocketFlags.None, dataAddress) < 0)
{
FATAL("Unable to send message");
return(false);
}
}
else
{
if (_rtspProtocol != null)
{
if (!_rtspProtocol.SendRaw(message, ref _rtpClient, isAudio, true))
{
FATAL("Unable to send raw rtcp audio data");
return(false);
}
}
}
packetsCount++;
if (isAudio)
{
_rtpClient.audioPacketsCount = packetsCount;
}
else
{
_rtpClient.videoPacketsCount = packetsCount;
}
bytesCount += (uint)messageLength;
if (isAudio)
{
_rtpClient.audioBytesCount = bytesCount;
}
else
{
_rtpClient.videoBytesCount = bytesCount;
}
return(true);
}