【视频开发】【Live555】摄像头采集，264编码，live555直播（0）

参看 有关live555 

1.首先需要修改live555，定义从 内存中直接获取source而不是从文件读取source的类。

自己实现的类命名为 H264FramedLiveSource 

 

/* * Filename: H264FramedLiveSource.hh * Auther: chenbin * Create date: 2013/ 1/22 */#ifndef _H264FRAMEDLIVESOURCE_HH#define _H264FRAMEDLIVESOURCE_HH#include <FramedSource.hh>class H264FramedLiveSource : public FramedSource{public:    static H264FramedLiveSource* createNew(UsageEnvironment& env,        char const* fileName,        unsigned preferredFrameSize = 0,        unsigned playTimePerFrame = 0); protected:    H264FramedLiveSource(UsageEnvironment& env,        char const* fileName,         unsigned preferredFrameSize,        unsigned playTimePerFrame);    // called only by createNew()    ~H264FramedLiveSource();private:    // redefined virtual functions:    virtual void doGetNextFrame();    int TransportData( unsigned char* to, unsigned maxSize );protected:    FILE *fp;};#endif

/* * Filename:  H264FramedLiveSource.cpp * Auther:  mlj * Create date: 2013/ 1/22 */#include "H264FramedLiveSource.hh" H264FramedLiveSource::H264FramedLiveSource( UsageEnvironment& env,      char const* fileName,     unsigned preferredFrameSize,     unsigned playTimePerFrame )    : FramedSource(env){     fp = fopen( fileName, "rb" ); }H264FramedLiveSource* H264FramedLiveSource::createNew( UsageEnvironment& env,                                           char const* fileName,                                            unsigned preferredFrameSize /*= 0*/,                                            unsigned playTimePerFrame /*= 0*/ ){     H264FramedLiveSource* newSource = new H264FramedLiveSource(env, fileName, preferredFrameSize, playTimePerFrame);     return newSource;}H264FramedLiveSource::~H264FramedLiveSource(){    fclose(fp);}long filesize(FILE *stream){    long curpos, length;    curpos = ftell(stream);    fseek(stream, 0L, SEEK_END);    length = ftell(stream);    fseek(stream, curpos, SEEK_SET);    return length;}void H264FramedLiveSource::doGetNextFrame(){    if( filesize(fp) >  fMaxSize)      fFrameSize = fread(fTo,1,fMaxSize,fp);     else    {        fFrameSize = fread(fTo,1,filesize(fp),fp);        fseek(fp, 0, SEEK_SET);    }    //fFrameSize = fMaxSize;    nextTask() = envir().taskScheduler().scheduleDelayedTask( 0,        (TaskFunc*)FramedSource::afterGetting, this);//表示延迟0秒后再执行 afterGetting 函数    return;}

 

在 H264FramedLiveSource::doGetNextFrame() 中，将要发送的内容复制到 fTo，最大为fMaxSize，fFrameSize指示实际发送的内容是多少字节。这里暂时还是从文件读作为测试。

 

2、定义自己的ServerMedia 

/* * Filename: H264LiveVideoServerMediaSubssion.hh * Auther: mlj  * Create date: 2013/ 1/22 */#ifndef _H264_LIVE_VIDEO_SERVER_MEDIA_SUBSESSION_HH#define _H264_LIVE_VIDEO_SERVER_MEDIA_SUBSESSION_HH#include "H264VideoFileServerMediaSubsession.hh"class H264LiveVideoServerMediaSubssion: public H264VideoFileServerMediaSubsession {public:  static H264LiveVideoServerMediaSubssion*  createNew( UsageEnvironment& env,               char const* fileName,                 Boolean reuseFirstSource );protected: // we're a virtual base class  H264LiveVideoServerMediaSubssion( UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource );   ~H264LiveVideoServerMediaSubssion();protected: // redefined virtual functions   FramedSource* createNewStreamSource(unsigned clientSessionId,                          unsigned& estBitrate);public:    char fFileName[100];};#endif

/* * Filename: H264LiveVideoServerMediaSubssion.cpp * Auther: chenbin * Create date: 2012/11/29 */#include "H264LiveVideoServerMediaSubssion.hh"#include "H264FramedLiveSource.hh"#include "H264VideoStreamFramer.hh"H264LiveVideoServerMediaSubssion*H264LiveVideoServerMediaSubssion::createNew( UsageEnvironment& env,                                             char const* fileName,                                              Boolean reuseFirstSource ){    return new H264LiveVideoServerMediaSubssion( env, fileName, reuseFirstSource );}H264LiveVideoServerMediaSubssion::H264LiveVideoServerMediaSubssion( UsageEnvironment& env, char const* fileName, Boolean reuseFirstSource ): H264VideoFileServerMediaSubsession( env, fileName, reuseFirstSource ){    strcpy(fFileName,fileName);}H264LiveVideoServerMediaSubssion::~H264LiveVideoServerMediaSubssion(){} FramedSource* H264LiveVideoServerMediaSubssion::createNewStreamSource( unsigned clientSessionId, unsigned& estBitrate ){    /* Remain to do : assign estBitrate */    estBitrate = 1000; // kbps, estimate    // Create the video source:    H264FramedLiveSource* liveSource = H264FramedLiveSource::createNew(envir(), fFileName);    if (liveSource == NULL)    {        return NULL;    }    // Create a framer for the Video Elementary Stream:    return H264VideoStreamFramer::createNew(envir(), liveSource);}

 

3、主函数

/**********This library is free software; you can redistribute it and/or modify it underthe terms of the GNU Lesser General Public License as published by theFree Software Foundation; either version 2.1 of the License, or (at youroption) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)This library is distributed in the hope that it will be useful, but WITHOUTANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESSFOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License formore details.You should have received a copy of the GNU Lesser General Public Licensealong with this library; if not, write to the Free Software Foundation, Inc.,51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA**********/// Copyright (c) 1996-2012, Live Networks, Inc.  All rights reserved// A test program that demonstrates how to stream - via unicast RTP// - various kinds of file on demand, using a built-in RTSP server.// main program#include "H264LiveVideoServerMediaSubssion.hh"#include "H264FramedLiveSource.hh"#include "liveMedia.hh"#include "BasicUsageEnvironment.hh" #pragma comment (lib, "Ws2_32.lib")  #pragma comment (lib, "BasicUsageEnvironment.lib")#pragma comment (lib, "groupsock.lib")#pragma comment (lib, "liveMedia.lib")#pragma comment (lib, "UsageEnvironment.lib")UsageEnvironment* env;// To make the second and subsequent client for each stream reuse the same// input stream as the first client (rather than playing the file from the// start for each client), change the following "False" to "True":Boolean reuseFirstSource = False;// To stream *only* MPEG-1 or 2 video "I" frames// (e.g., to reduce network bandwidth),// change the following "False" to "True":Boolean iFramesOnly = False;static void announceStream(RTSPServer* rtspServer, ServerMediaSession* sms,               char const* streamName, char const* inputFileName); // fwdstatic char newMatroskaDemuxWatchVariable;static MatroskaFileServerDemux* demux;static void onMatroskaDemuxCreation(MatroskaFileServerDemux* newDemux, void* /*clientData*/) {  demux = newDemux;  newMatroskaDemuxWatchVariable = 1;}int main(int argc, char** argv) {  // Begin by setting up our usage environment:  TaskScheduler* scheduler = BasicTaskScheduler::createNew();  env = BasicUsageEnvironment::createNew(*scheduler);  UserAuthenticationDatabase* authDB = NULL;#ifdef ACCESS_CONTROL  // To implement client access control to the RTSP server, do the following:  authDB = new UserAuthenticationDatabase;  authDB->addUserRecord("username1", "password1"); // replace these with real strings  // Repeat the above with each <username>, <password> that you wish to allow  // access to the server.#endif  // Create the RTSP server:  RTSPServer* rtspServer = RTSPServer::createNew(*env, 8554, authDB);  if (rtspServer == NULL) {    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";    exit(1);  }  char const* descriptionString    = "Session streamed by \"testOnDemandRTSPServer\"";  // Set up each of the possible streams that can be served by the  // RTSP server.  Each such stream is implemented using a  // "ServerMediaSession" object, plus one or more  // "ServerMediaSubsession" objects for each audio/video substream.   // A H.264 video elementary stream:  {    char const* streamName = "h264ESVideoTest";    char const* inputFileName = "test.264";    ServerMediaSession* sms      = ServerMediaSession::createNew(*env, streamName, streamName,                      descriptionString);    sms->addSubsession(H264LiveVideoServerMediaSubssion               ::createNew(*env, inputFileName, reuseFirstSource));//修改为自己实现的servermedia  H264LiveVideoServerMediaSubssion    rtspServer->addServerMediaSession(sms);    announceStream(rtspServer, sms, streamName, inputFileName);  }  // Also, attempt to create a HTTP server for RTSP-over-HTTP tunneling.  // Try first with the default HTTP port (80), and then with the alternative HTTP  // port numbers (8000 and 8080).  //if (rtspServer->setUpTunnelingOverHTTP(80) || rtspServer->setUpTunnelingOverHTTP(8000) || rtspServer->setUpTunnelingOverHTTP(8080)) {  //  *env << "\n(We use port " << rtspServer->httpServerPortNum() << " for optional RTSP-over-HTTP tunneling.)\n";  //} else {  //  *env << "\n(RTSP-over-HTTP tunneling is not available.)\n";  //}  env->taskScheduler().doEventLoop(); // does not return  return 0; // only to prevent compiler warning}static void announceStream(RTSPServer* rtspServer, ServerMediaSession* sms,               char const* streamName, char const* inputFileName) {  char* url = rtspServer->rtspURL(sms);  UsageEnvironment& env = rtspServer->envir();  env << "\n\"" << streamName << "\" stream, from the file \""      << inputFileName << "\"\n";  env << "Play this stream using the URL \"" << url << "\"\n";  delete[] url;}

 

使用 ffplay.exe rtsp://115.156.164.19:8554/h264ESVideoTest 可以播放test.264的视频.

 

相关配置：live555的四个库放在lib文件夹下。

库目录：G:\workspace\avs\live555test\live555test\lib

包含目录：G:\workspace\avs\live555test\live555test\BasicUsageEnvironment\include;G:\workspace\avs\live555test\live555test\UsageEnvironment\include;G:\workspace\avs\live555test\live555test\liveMedia\include;G:\workspace\avs\live555test\live555test\groupsock\include

源代码 ：

svn checkout http://live555-send-test.googlecode.com/svn/trunk/ live555-send-test-read-only

FROM:  http://www.cnblogs.com/mlj318/archive/2013/01/23/2872932.html