int CMediaNet::MediaNet_Thread( void * pThisVoid )
{
CMediaNet *pThis = ( CMediaNet* )pThisVoid;
do
{
// 开始初始化.
pThis->SetRtspStatus( RTSPStatus_Init );
// Begin by setting up our usage environment:
TaskScheduler* scheduler = BasicTaskScheduler::createNew();
env = BasicUsageEnvironment::createNew(*scheduler);
progName = "M_CU";
string strUrl = pThis->m_strRTSPUrlA;
gettimeofday(&startTime, NULL);
unsigned short desiredPortNum = 0;
// unfortunately we can't use getopt() here, as Windoze doesn't have it
// Create our client object:
ourClient = createClient(*env, verbosityLevel, progName);
if (ourClient == NULL)
{
*env << "Failed to create " << clientProtocolName
<< " client: " << env->getResultMsg() << "\n";
pThis->SetRtspStatus( RTSPStatus_Error_Connect_Srv );
break;
}
// 开始获取Opition.
pThis->SetRtspStatus( RTSPStatus_Opitiion );
// Begin by sending an "OPTIONS" command:
char* optionsResponse
= getOptionsResponse(ourClient, pThis->m_strRTSPUrlA.c_str(), username, password);
if (optionsResponse == NULL)
{
*env << clientProtocolName << " \"OPTIONS\" request failed: "
<< env->getResultMsg() << "\n";
pThis->SetRtspStatus( RTSPStatus_Error_Connect_Srv );
break;
}
else
{
*env << clientProtocolName << " \"OPTIONS\" request returned: "
<< optionsResponse << "\n";
}
if( optionsResponse )
{
delete[] optionsResponse;
}
// 开始获取Description.
// Open the URL, to get a SDP description:
pThis->SetRtspStatus( RTSPStatus_Description );
char* sdpDescription
= getSDPDescriptionFromURL(ourClient, pThis->m_strRTSPUrlA.c_str(), username, password,
proxyServerName, proxyServerPortNum,
desiredPortNum);
if (sdpDescription == NULL)
{
*env << "Failed to get a SDP description from URL \"" << pThis->m_strRTSPUrlA.c_str()
<< "\": " << env->getResultMsg() << "\n";
pThis->SetRtspStatus( RTSPStatus_Error_Connect_Srv );
break;
}
*env << "Opened URL \"" << pThis->m_strRTSPUrlA.c_str()
<< "\", returning a SDP description:\n" << sdpDescription << "\n";
// Create a media session object from this SDP description:
session = MediaSession::createNew(*env, sdpDescription);
delete[] sdpDescription;
if (session == NULL)
{
*env << "Failed to create a MediaSession object from the SDP description: " << env->getResultMsg() << "\n";
pThis->SetRtspStatus( RTSPStatus_Error_Connect_Srv );
break;
}
else if (!session->hasSubsessions())
{
*env << "This session has no media subsessions (i.e., \"m=\" lines)\n";
pThis->SetRtspStatus( RTSPStatus_Error_Connect_Srv );
break;
}
// Then, setup the "RTPSource"s for the session:
MediaSubsessionIterator iter(*session);
MediaSubsession *subsession;
Boolean madeProgress = False;
char const* singleMediumToTest = singleMedium;
while ((subsession = iter.next()) != NULL)
{
// If we've asked to receive only a single medium, then check this now:
if (singleMediumToTest != NULL)
{
if (strcmp(subsession->mediumName(), singleMediumToTest) != 0)
{
*env << "Ignoring \"" << subsession->mediumName()
<< "/" << subsession->codecName()
<< "\" subsession, because we've asked to receive a single " << singleMedium
<< " session only\n";
continue;
}
else
{
// Receive this subsession only
singleMediumToTest = "xxxxx";
// this hack ensures that we get only 1 subsession of this type
}
}
desiredPortNum = 0;
if (desiredPortNum != 0)
{
subsession->setClientPortNum(desiredPortNum);
desiredPortNum += 2;
}
if (true)
{
if (!subsession->initiate(simpleRTPoffsetArg))
{
*env << "Unable to create receiver for \"" << subsession->mediumName()
<< "/" << subsession->codecName()
<< "\" subsession: " << env->getResultMsg() << "\n";
}
else
{
*env << "Created receiver for \"" << subsession->mediumName()
<< "/" << subsession->codecName()
<< "\" subsession (client ports " << subsession->clientPortNum()
<< "-" << subsession->clientPortNum()+1 << ")\n";
madeProgress = True;
if (subsession->rtpSource() != NULL)
{
// Because we're saving the incoming data, rather than playing
// it in real time, allow an especially large time threshold
// (1 second) for reordering misordered incoming packets:
unsigned const thresh = 1000000; // 1 second
subsession->rtpSource()->setPacketReorderingThresholdTime(thresh);
if (socketInputBufferSize > 0)
{
// Set the RTP source's input buffer size as specified:
int socketNum
= subsession->rtpSource()->RTPgs()->socketNum();
unsigned curBufferSize
= getReceiveBufferSize(*env, socketNum);
unsigned newBufferSize
= setReceiveBufferTo(*env, socketNum, socketInputBufferSize);
*env << "Changed socket receive buffer size for the \""
<< subsession->mediumName()
<< "/" << subsession->codecName()
<< "\" subsession from "
<< curBufferSize << " to "
<< newBufferSize << " bytes\n";
}
}
}
}
else
{
mcu::tlog << _T( "Use port： " ) << (int)subsession->clientPortNum() << endl;
if (subsession->clientPortNum() == 0)
{
*env << "No client port was specified for the \""
<< subsession->mediumName()
<< "/" << subsession->codecName()
<< "\" subsession. (Try adding the \"-p <portNum>\" option.)\n";
}
else
{
madeProgress = True;
}
}
}
if (!madeProgress)
break;
// Perform additional 'setup' on each subsession, before playing them:
pThis->SetRtspStatus( RTSPStatus_Setup );
unsigned nResponseCode = NULL;
BOOL bSetupSuccess = setupStreams( &nResponseCode );
if ( !bSetupSuccess )
{
// setup失败！
if ( RTSPResp_Error_Server_Full == nResponseCode )
{
pThis->SetRtspStatus( RTSPStatus_Error_Server_Full );
}
else
{
pThis->SetRtspStatus( RTSPStatus_Idle );
}
break;
}
// Create output files:
if ( true )
{
// Create and start "FileSink"s for each subsession:
madeProgress = False;
iter.reset();
while ((subsession = iter.next()) != NULL)
{
if (subsession->readSource() == NULL) continue; // was not initiated
MediaSink *pDecodeSink = 0;
if (strcmp(subsession->mediumName(), "video") == 0 )
{
int nBandWidth = subsession->GetBandWidth();
if ( strcmp(subsession->codecName(), "MP4V-ES") == 0 )
{
CMpeg4StreamDecodeSink *pMsds = CMpeg4StreamDecodeSink::CreateNew( *env, 20000, nBandWidth );
pDecodeSink = pMsds;
}
else if ( strcmp( subsession->codecName(), "H264" ) == 0 )
{
CH264StreamDecodeSink *pHsds = CH264StreamDecodeSink::CreateNew( *env, 20000, nBandWidth );
pDecodeSink = pHsds;
}
else
{
continue;
}
}
subsession->sink = pDecodeSink;
if (subsession->sink == NULL)
{
*env << "Failed to create CH264StreamDecodeSink \"" << "\n";
}
subsession->sink->startPlaying(*(subsession->readSource()),
subsessionAfterPlaying,
subsession);
// Also set a handler to be called if a RTCP "BYE" arrives
// for this subsession:
if (subsession->rtcpInstance() != NULL)
{
subsession->rtcpInstance()->setByeHandler(subsessionByeHandler,
subsession);
}
// 发送NAT探测包。
unsigned char temp[112] = {0};
temp[0] = 0x80;
subsession->rtpSource()->RTPgs()->output( *env, 0,temp, 112 );
madeProgress = True;
}
}
// Finally, start playing each subsession, to start the data flow:
pThis->SetRtspStatus( RTSPStatus_Play );
startPlayingStreams();
pThis->SetRtspStatus( RTSPStatus_Running );
// 传入结束标志指针。
env->taskScheduler().doEventLoop( &pThis->m_runFlag );
pThis->SetRtspStatus( RTSPStatus_Idle );
} while(0);
return 0;
}
