Symbian 使用 RTP 发送数据的流程

核心提示：User::WaitForRequest(stat);User::LeaveIfError(stat.Int());iRtpSession.OpenL(iSocket, aPacketSize+12, iRtcpSocket);5. 后边有一个没查出功能的iRtpSession.SetRTPTimeConversion

User::WaitForRequest(stat);

User::LeaveIfError(stat.Int());

iRtpSession.OpenL(iSocket, aPacketSize+12, iRtcpSocket);

5. 后边有一个没查出功能的

iRtpSession.SetRTPTimeConversion(100, 100);

6. 注册RTP回调

iRtpSession.PrivRegisterEventCallbackL(ERtpNewSource, (TRtpCallbackFunction)CRtpFileStreamer::NewSource, this);

在此处注册后就可以处理收到的信息，处理接口如下：

void CRtpFileStreamer::NewSource(CRtpFileStreamer* aPtr, const TRtpEvent& aEvent)

{

if (aPtr->ReceiveSrc().IsOpen())

{

aPtr->ReceiveSrc().Close();

}

TRAPD(err,

aPtr->ReceiveSrc() = aEvent.Session().NewReceiveSourceL();

aPtr->ReceiveSrc().PrivRegisterEventCallbackL(ERtpPacketReceived, (TRtpCallbackFunction)CRtpFileStreamer::PacketArrived, aPtr);)

if (err!=KErrNone)

{

__DEBUGGER();

}

}

/**

A callback method that is called on packet arrival.

*/

void CRtpFileStreamer::PacketArrived(CRtpFileStreamer* aPtr, const TRtpEvent& aEvent)

{

aPtr->iRecvPacket.Close();

aPtr->iRecvPacket = aEvent.ReceiveSource().Packet();

if (aEvent.ReceiveSource().Packet().IsOpen())

{

__DEBUGGER();

}

TRAPD(err,aPtr->HandleReceivedPacketL());

if (err!=KErrNone)

{

__DEBUGGER();

}

}

7. 现在需要创建一个RRtpSendPacket

RRtpSession& iSession;

RRtpSendSource iSendSrc;

RRtpSendPacket iSendPacket;

iSendSrc = iSession.NewSendSourceL();

iSendSrc.SetDefaultPayloadSize(iPacketSize);

iSendSrc.PrivRegisterEventCallbackL(ERtpSendSucceeded, (TRtpCallbackFunction)CRtpFileSender::PacketSent, this);