使用live555类库实现的网络直播系统——直播H264文件

    下载live555最新代码，编译生成live555 的库文件：libBasicUsageEnvironment.a  libgroupsock.a  libliveMedia.a  libUsageEnvironment.a ，使用这4个库再加上live555 自带的测试程序，可以很简单的实现live555 的直播。live555提供的直播程序是只能直播之前已经录制好的视频（与点播不同）。代码如下：

/*=============================================================================FileName: h264live.cDesc: use the lib of live555 to do liveAuthor: licaibiaoVersion: LastChange: 2017-02-23 
*=============================================================================*/
#include "h264live.hh"UsageEnvironment* env;
char const* inputFileName = "test.264";
H264VideoStreamFramer* videoSource;
RTPSink* videoSink;void play(); // forwardint main(int argc, char** argv) {// Begin by setting up our usage environment:TaskScheduler* scheduler = BasicTaskScheduler::createNew();env = BasicUsageEnvironment::createNew(*scheduler);// Create 'groupsocks' for RTP and RTCP:struct in_addr destinationAddress;destinationAddress.s_addr = chooseRandomIPv4SSMAddress(*env);// Note: This is a multicast address.  If you wish instead to stream// using unicast, then you should use the "testOnDemandRTSPServer"// test program - not this test program - as a model.const unsigned short rtpPortNum = 18888;const unsigned short rtcpPortNum = rtpPortNum+1;const unsigned char ttl = 255;const Port rtpPort(rtpPortNum);const Port rtcpPort(rtcpPortNum);Groupsock rtpGroupsock(*env, destinationAddress, rtpPort, ttl);rtpGroupsock.multicastSendOnly(); // we're a SSM sourceGroupsock rtcpGroupsock(*env, destinationAddress, rtcpPort, ttl);rtcpGroupsock.multicastSendOnly(); // we're a SSM source// Create a 'H264 Video RTP' sink from the RTP 'groupsock':OutPacketBuffer::maxSize = 100000;videoSink = H264VideoRTPSink::createNew(*env, &rtpGroupsock, 96);// Create (and start) a 'RTCP instance' for this RTP sink:const unsigned estimatedSessionBandwidth = 500; // in kbps; for RTCP b/w shareconst unsigned maxCNAMElen = 100;unsigned char CNAME[maxCNAMElen+1];gethostname((char*)CNAME, maxCNAMElen);CNAME[maxCNAMElen] = '\0'; // just in caseRTCPInstance* rtcp= RTCPInstance::createNew(*env, &rtcpGroupsock,estimatedSessionBandwidth, CNAME,videoSink, NULL /* we're a server */,True /* we're a SSM source */);// Note: This starts RTCP running automaticallyRTSPServer* rtspServer = RTSPServer::createNew(*env, 8554);if (rtspServer == NULL) {*env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";exit(1);}ServerMediaSession* sms= ServerMediaSession::createNew(*env, "testStream", inputFileName,"Session streamed by \"testH264VideoStreamer\"",True /*SSM*/);sms->addSubsession(PassiveServerMediaSubsession::createNew(*videoSink, rtcp));rtspServer->addServerMediaSession(sms);char* url = rtspServer->rtspURL(sms);*env << "Play this stream using the URL \"" << url << "\"\n";delete[] url;// Start the streaming:*env << "Beginning streaming...\n";play();env->taskScheduler().doEventLoop(); // does not returnreturn 0; // only to prevent compiler warning
}void afterPlaying(void* /*clientData*/) {*env << "...done reading from file\n";videoSink->stopPlaying();Medium::close(videoSource);// Note that this also closes the input file that this source read from.// Start playing once again:play();
}void play() {// Open the input file as a 'byte-stream file source':ByteStreamFileSource* fileSource= ByteStreamFileSource::createNew(*env, inputFileName);if (fileSource == NULL) {*env << "Unable to open file \"" << inputFileName<< "\" as a byte-stream file source\n";exit(1);}FramedSource* videoES = fileSource;// Create a framer for the Video Elementary Stream:videoSource = H264VideoStreamFramer::createNew(*env, videoES);// Finally, start playing:*env << "Beginning to read from file...\n";videoSink->startPlaying(*videoSource, afterPlaying, videoSink);
}

Makefile 文件如下：

INCLUDES 	 = -I./include/usageEnvironment/ -I./include/groupsock/ -I.include/liveMedia/ -I.include/BasicUsageEnvironment
COMPILE_OPTS =      $(INCLUDES) -I. -O2 -DSOCKLEN_T=socklen_t -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64
C 			 =         c
C_COMPILER   =        cc
C_FLAGS 	 =       $(COMPILE_OPTS) $(CPPFLAGS) $(CFLAGS)
CPP 		 =           cpp
CPLUSPLUS_COMPILER =    c++
CPLUSPLUS_FLAGS =   $(COMPILE_OPTS) -Wall -DBSD=1 $(CPPFLAGS) $(CXXFLAGS)
OBJ 		 =           o
LINK 		 =          c++ -o
LINK_OPTS    =     -L. $(LDFLAGS)
CONSOLE_LINK_OPTS = $(LINK_OPTS)USAGE_ENVIRONMENT_LIB = ./lib/libUsageEnvironment.a
BASIC_USAGE_ENVIRONMENT_LIB = ./lib/libBasicUsageEnvironment.a
LIVEMEDIA_LIB = ./lib/libliveMedia.a
GROUPSOCK_LIB = ./lib/libgroupsock.a
LOCAL_LIBS 	  =  $(LIVEMEDIA_LIB) $(GROUPSOCK_LIB) $(BASIC_USAGE_ENVIRONMENT_LIB) $(USAGE_ENVIRONMENT_LIB)
LIBS          =  $(LOCAL_LIBS) MEDIA_SERVER_OBJS = h264live.$(OBJ)
APP = h264live.$(C).$(OBJ):$(C_COMPILER) -c $(C_FLAGS) $<
.$(CPP).$(OBJ):$(CPLUSPLUS_COMPILER) -c $(CPLUSPLUS_FLAGS) $<h264live: $(MEDIA_SERVER_OBJS) $(LOCAL_LIBS)$(LINK)$@ $(CONSOLE_LINK_OPTS) $(MEDIA_SERVER_OBJS) $(LIBS)clean:-rm -rf *.$(OBJ) $(APP) core *.core *~ include/*~

工程目录如下：

[root@redhat h264live]# tree -L 2
.
├── h264live
├── h264live.cpp
├── h264live.hh
├── h264live.o
├── include
│   ├── basicUsageEnvironment
│   ├── groupsock
│   ├── liveMedia
│   └── usageEnvironment
├── lib
│   ├── libBasicUsageEnvironment.a
│   ├── libgroupsock.a
│   ├── libliveMedia.a
│   └── libUsageEnvironment.a
├── Makefile
└── test.264

直接运行h264live文件，然后在客户端打开URL： "rtsp://192.168.0.127:8554/testStream"  就可以收看直播视频。

完整的工程代码：live555实现h264文件直播工程