/// <summary>
/// Is called when wave-in has received new audio frame.
/// </summary>
/// <param name="sender">Sender.</param>
/// <param name="e">Event data.</param>
private void m_pWaveIn_AudioFrameReceived(object sender, EventArgs <byte[]> e)
{
try{
// We don't have RTP timestamp base or time stamp recycled.
if (m_RtpTimeStamp == 0 || m_RtpTimeStamp > m_pRTP_Stream.Session.RtpClock.RtpTimestamp)
{
m_RtpTimeStamp = m_pRTP_Stream.Session.RtpClock.RtpTimestamp;
}
// Some sample block missing or silence suppression.
// Don't work ... need some more investigation.
//else if((m_pRTP_Stream.Session.RtpClock.RtpTimestamp - m_RtpTimeStamp) > 2 * m_pRTP_Stream.Session.RtpClock.MillisecondsToRtpTicks(m_AudioFrameSize)){
// m_RtpTimeStamp = m_pRTP_Stream.Session.RtpClock.RtpTimestamp;
//}
else
{
m_RtpTimeStamp += (uint)m_pRTP_Stream.Session.RtpClock.MillisecondsToRtpTicks(m_AudioFrameSize);
}
if (m_pActiveCodec != null)
{
RTP_Packet rtpPacket = new RTP_Packet();
rtpPacket.Data = m_pActiveCodec.Encode(e.Value, 0, e.Value.Length);
rtpPacket.Timestamp = m_RtpTimeStamp;
m_pRTP_Stream.Send(rtpPacket);
}
}
catch (Exception x) {
if (!this.IsDisposed)
{
// Raise error event(We can't throw expection directly, we are on threadpool thread).
OnError(x);
}
}
}
private void testReceive(RTP_Packet packet)
{
_nlist.Add(Nalu.Parse(packet.Data));
if (packet.IsMarker)
{
buildFrame();
_nlist = new List <Nalu>();
}
}
public void SendPPS(RTP_SendStream sender, uint timestamp)
{
if (_pps != null)
{
RTP_Packet packet = new RTP_Packet();
packet.Timestamp = timestamp;
packet.Data = _pps.NaluBytes();
sender.Send(packet);
_ppsStamp = Environment.TickCount;
}
}
/// <summary>
/// Sends audio to RTP session target(s).
/// </summary>
private void SendAudio()
{
try{
using (FileStream fs = File.OpenRead(m_SendFile)){
RTP_SendStream sendStream = m_pSession.CreateSendStream();
byte[] buffer = new byte[400];
int readedCount = fs.Read(buffer, 0, buffer.Length);
long lastSendTime = DateTime.Now.Ticks;
long packetsSent = 0;
long totalSent = 0;
while (readedCount > 0)
{
if (m_pMainUI.ActiveCodec != null)
{
byte[] encodedData = m_pMainUI.ActiveCodec.Encode(buffer, 0, buffer.Length);
// Send audio frame.
RTP_Packet packet = new RTP_Packet();
packet.Timestamp = m_pSession.RtpClock.RtpTimestamp;
packet.Data = encodedData;
sendStream.Send(packet);
// Read next audio frame.
readedCount = fs.Read(buffer, 0, buffer.Length);
totalSent += encodedData.Length;
packetsSent++;
this.BeginInvoke(new MethodInvoker(delegate(){
m_pCodec.Text = m_pMainUI.ActiveCodec.Name;
m_pPacketsSent.Text = packetsSent.ToString();
m_pKBSent.Text = Convert.ToString(totalSent / 1000);
}));
}
Thread.Sleep(25);
lastSendTime = DateTime.Now.Ticks;
}
sendStream.Close();
}
}
catch (Exception x) {
string dummy = x.Message;
}
}
private void testSend(PSFragment psf)
{
List <Nalu> nList = _helper.ToRTP(psf);
uint timestamp = 1;
for (int i = 0; i < nList.Count; i++)
{
RTP_Packet packet = new RTP_Packet();
packet.Timestamp = timestamp;
packet.Data = nList[i].NaluBytes();
if (psf.IsFrameEnd && i == nList.Count - 1)
{
packet.IsMarker = true;
}
else
{
packet.IsMarker = false;
}
testReceive(packet);
}
}
private void _ups_Unpacked(object arg1, PSFragment psf)
{
List <Nalu> nList = _rtpHelper.ToRTPPayload(psf);
uint timestamp = _multiSession.Sessions[0].RtpClock.RtpTimestamp;
//判断是否有新的接收客户端加入。
if (_hasNewTarget)
{
_hTrigger.SendSPS(_sendStream, timestamp);
_hTrigger.SendPPS(_sendStream, timestamp);
_hasNewTarget = true;
}
for (int i = 0; i < nList.Count; i++)
{
_hTrigger.Update(nList[i]);
RTP_Packet packet = new RTP_Packet();
packet.Timestamp = timestamp;
packet.Data = nList[i].NaluBytes();
if (psf.IsFrameEnd && i == nList.Count - 1)
{
packet.IsMarker = true;
}
else
{
packet.IsMarker = false;
}
_sendStream.Send(packet);
}
//判断是否需要冗余发送SPS和PPS。
if (_hTrigger.IsSPSTimeout)
{
_hTrigger.SendSPS(_sendStream, timestamp);
}
if (_hTrigger.IsPPSTimeout)
{
_hTrigger.SendPPS(_sendStream, timestamp);
}
}
