protected override void PushNextPacket()
{
if (AudioCodec == null)
{
return;
}
RTPPacket packet = IncomingRTPPacketBuffer.GetPacket();
if (packet == null)
{
return;
}
byte[] bNewAudioData = AudioCodec.DecodeToBytes(packet);
if (bNewAudioData != null)
{
ReceiveAudioQueue.AppendData(bNewAudioData);
if (ReceiveAudioQueue.Size > m_nPacketBytes * MaxAudioPacketsQueue) // someone isn't taking our packets (either directly our through IAudioSource), so let's not get too big
{
ReceiveAudioQueue.GetNSamples(ReceiveAudioQueue.Size - m_nPacketBytes * MaxAudioPacketsQueue);
}
if (RenderSink != null)
{
MediaSample samp = new MediaSample(bNewAudioData, AudioCodec.AudioFormat);
RenderSink.PushSample(samp, this);
}
}
}
public override byte[] GetNextPacketSample(bool bReturnArrayOnNA)
{
if (AudioCodec == null)
{
return(null);
}
int nSamples = AudioCodec.AudioFormat.CalculateNumberOfSamplesForDuration(TimeSpan.FromMilliseconds(AudioCodec.ReceivePTime));
int nSizeBytes = nSamples * AudioCodec.AudioFormat.BytesPerSample;
RTPPacket packet = IncomingRTPPacketBuffer.GetPacket();
if ((packet == null) && (bReturnArrayOnNA == true))
{
return(new byte[nSizeBytes]);
}
return(AudioCodec.DecodeToBytes(packet));
}
public byte[] WaitNextPacketSample(bool bReturnArrayOnNA, int nTimeOut, out int nMsTook)
{
nMsTook = 0;
if (AudioCodec == null)
{
return(null);
}
int nSamples = AudioCodec.AudioFormat.CalculateNumberOfSamplesForDuration(TimeSpan.FromMilliseconds(AudioCodec.ReceivePTime));
int nSizeBytes = nSamples * AudioCodec.AudioFormat.BytesPerSample;
RTPPacket packet = IncomingRTPPacketBuffer.WaitPacket(nTimeOut, out nMsTook);
if ((packet == null) && (bReturnArrayOnNA == true))
{
return(new byte[nSizeBytes]);
}
return(AudioCodec.DecodeToBytes(packet));
}
void RTPUDPClient_OnReceiveMessage(byte[] bData, int nLength, IPEndPoint epfrom, IPEndPoint epthis, DateTime dtReceived)
{
/// if we are an performing ICE, see if this is an ICE packet instead of an RTP one
if (nLength >= 8)
{
//0x2112A442
if ((bData[4] == 0x21) && (bData[5] == 0x12) && (bData[6] == 0xA4) && (bData[7] == 0x42))
{
/// STUN message
STUNMessage smsg = new STUN2Message();
byte[] bStun = new byte[nLength];
Array.Copy(bData, 0, bStun, 0, nLength);
try
{
smsg.Bytes = bStun;
}
catch (Exception ex)
{
smsg = new STUNMessage();
smsg.Bytes = bStun;
}
STUNRequestResponse foundreq = null;
lock (StunLock)
{
foreach (STUNRequestResponse queuedreq in StunRequestResponses)
{
if (queuedreq.IsThisYourResponseSetIfItIs(smsg) == true)
{
foundreq = queuedreq;
break;
}
}
if (foundreq != null)
{
StunRequestResponses.Remove(foundreq);
return;
}
}
if (OnUnhandleSTUNMessage != null)
{
OnUnhandleSTUNMessage(smsg, epfrom);
}
return;
}
}
RTPPacket packet = RTPPacket.BuildPacket(bData, 0, nLength);
if (packet != null) /// Seems we get some TURN channel data messages from google talk
{
if (ReceiveSSRC == 0)
{
ReceiveSSRC = packet.SSRC;
}
if ((packet.PayloadType == this.Payload) && (packet.SSRC == this.ReceiveSSRC))
{
IncomingRTPPacketBuffer.AddPacket(packet);
}
}
}