mirror of
https://github.com/mpromonet/v4l2rtspserver
synced 2024-11-17 21:25:40 +00:00
continue to work on HLS using memory buffers
This commit is contained in:
mpromonet
parent
16ac9205d4
commit
8a593ab42f
@ -10,11 +10,13 @@
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#ifndef SERVER_MEDIA_SUBSESSION
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#define SERVER_MEDIA_SUBSESSION
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#include <sys/stat.h>
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#include <string>
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#include <iomanip>
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#include <iostream>
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#include <fstream>
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#include <sys/stat.h>
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#include <map>
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// live555
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#include <liveMedia.hh>
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@ -87,17 +89,18 @@ class UnicastServerMediaSubsession : public OnDemandServerMediaSubsession , publ
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// -----------------------------------------
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// ServerMediaSubsession for HLS
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// -----------------------------------------
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class HLSServerMediaSubsession : public UnicastServerMediaSubsession
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{
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class HLSSink : public MediaSink
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{
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public:
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static HLSSink* createNew(UsageEnvironment& env, unsigned int bufferSize)
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static HLSSink* createNew(UsageEnvironment& env, unsigned int bufferSize, unsigned int sliceDuration)
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{
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return new HLSSink(env, bufferSize);
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return new HLSSink(env, bufferSize, sliceDuration);
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}
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protected:
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HLSSink(UsageEnvironment& env, unsigned bufferSize) : MediaSink(env), m_bufferSize(bufferSize), m_slice(0), m_firstslice(0)
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HLSSink(UsageEnvironment& env, unsigned bufferSize, unsigned int sliceDuration) : MediaSink(env), m_bufferSize(bufferSize), m_refTime(0), m_sliceDuration(sliceDuration)
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{
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m_buffer = new unsigned char[m_bufferSize];
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}
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@ -124,7 +127,7 @@ class HLSSink : public MediaSink
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static void afterGettingFrame(void* clientData, unsigned frameSize,
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unsigned numTruncatedBytes,
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struct timeval presentationTime,
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unsigned /*durationInMicroseconds*/)
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unsigned durationInMicroseconds)
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{
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HLSSink* sink = (HLSSink*)clientData;
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sink->afterGettingFrame(frameSize, numTruncatedBytes, presentationTime);
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@ -135,44 +138,87 @@ class HLSSink : public MediaSink
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if (numTruncatedBytes > 0)
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{
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envir() << "FileSink::afterGettingFrame(): The input frame data was too large for our buffer size \n";
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// realloc a bigger buffer
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m_bufferSize += numTruncatedBytes;
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delete[] m_buffer;
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m_buffer = new unsigned char[m_bufferSize];
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}
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if (m_os.is_open())
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else
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{
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if (m_slice != (presentationTime.tv_sec/10))
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// append buffer to slice buffer
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if (m_refTime == 0)
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{
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m_os.close();
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m_refTime = presentationTime.tv_sec;
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}
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}
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if (!m_os.is_open())
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unsigned int slice = (presentationTime.tv_sec-m_refTime)/m_sliceDuration;
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std::string& outputBuffer = m_outputBuffers[slice];
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outputBuffer.append((const char*)m_buffer, frameSize);
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// remove old buffers
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while (m_outputBuffers.size()>5)
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{
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m_slice = presentationTime.tv_sec/10;
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if (m_firstslice == 0)
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{
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m_firstslice = m_slice;
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m_outputBuffers.erase(m_outputBuffers.begin());
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}
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std::ostringstream os;
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os << m_slice << ".ts";
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m_os.open(os.str().c_str());
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}
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if (m_os.is_open())
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{
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m_os.write((char*)m_buffer, frameSize);
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}
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continuePlaying();
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}
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public:
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unsigned int getHLSBufferSize(unsigned int slice)
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{
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unsigned int size = 0;
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std::map<unsigned int,std::string>::iterator it = m_outputBuffers.find(slice);
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if (it != m_outputBuffers.end())
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{
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size = it->second.size();
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}
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return size;
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}
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const char* getHLSBuffer(unsigned int slice)
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{
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const char* content = NULL;
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std::map<unsigned int,std::string>::iterator it = m_outputBuffers.find(slice);
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if (it != m_outputBuffers.end())
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{
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content = it->second.c_str();
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}
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return content;
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}
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unsigned int firstTime()
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{
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unsigned int firstTime = 0;
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if (m_outputBuffers.size() != 0)
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{
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firstTime = m_outputBuffers.begin()->first;
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}
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return firstTime*m_sliceDuration;
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}
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unsigned int duration()
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{
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unsigned int duration = 0;
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if (m_outputBuffers.size() != 0)
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{
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duration = m_outputBuffers.rbegin()->first - m_outputBuffers.begin()->first;
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}
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return (duration)*m_sliceDuration;
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}
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unsigned int getSliceDuration()
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{
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return m_sliceDuration;
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}
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private:
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unsigned char * m_buffer;
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unsigned int m_bufferSize;
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std::ofstream m_os;
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public:
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unsigned int m_slice;
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unsigned int m_firstslice;
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std::map<unsigned int,std::string> m_outputBuffers;
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unsigned int m_refTime;
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unsigned int m_sliceDuration;
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};
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class HLSServerMediaSubsession : public OnDemandServerMediaSubsession , public BaseServerMediaSubsession
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{
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public:
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static HLSServerMediaSubsession* createNew(UsageEnvironment& env, StreamReplicator* replicator, const std::string& format)
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{
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@ -181,57 +227,48 @@ class HLSServerMediaSubsession : public OnDemandServerMediaSubsession , public B
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protected:
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HLSServerMediaSubsession(UsageEnvironment& env, StreamReplicator* replicator, const std::string& format)
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: OnDemandServerMediaSubsession(env, False), BaseServerMediaSubsession(replicator), m_format(format)
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: UnicastServerMediaSubsession(env, replicator, format)
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{
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// Create a source
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FramedSource* source = replicator->createStreamReplica();
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FramedSource* videoSource = createSource(env, source, format);
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// Start Playing the Sink
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m_videoSink = HLSSink::createNew(env, 65535);
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m_videoSink->startPlaying(*videoSource, NULL, NULL);
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// Start Playing the HLS Sink
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m_hlsSink = HLSSink::createNew(env, OutPacketBuffer::maxSize, 10);
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m_hlsSink->startPlaying(*videoSource, NULL, NULL);
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}
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virtual FramedSource* createNewStreamSource(unsigned clientSessionId, unsigned& estBitrate)
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virtual ~HLSServerMediaSubsession()
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{
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FramedSource* source = m_replicator->createStreamReplica();
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return createSource(envir(), source, m_format);
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Medium::close(m_hlsSink);
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}
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virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock, unsigned char rtpPayloadTypeIfDynamic, FramedSource* inputSource)
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virtual float getCurrentNPT(void* streamToken)
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{
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return createSink(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic, m_format);
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return (m_hlsSink->firstTime());
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}
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virtual char const* getAuxSDPLine(RTPSink* rtpSink,FramedSource* inputSource);
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virtual float duration() const {
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std::cout << "duration " << (m_videoSink->m_slice - m_videoSink->m_firstslice)*10 << std::endl;
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return (m_videoSink->m_slice - m_videoSink->m_firstslice)*10;
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virtual float duration() const
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{
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return (m_hlsSink->duration());
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}
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virtual void seekStream(unsigned clientSessionId, void* streamToken, double& seekNPT, double streamDuration, u_int64_t& numBytes)
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{
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m_slice = seekNPT / 10;
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seekNPT = m_slice*10;
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std::ostringstream os;
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os << m_slice+m_videoSink->m_firstslice << ".ts";
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struct stat sb;
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int statResult = stat(os.str().c_str(), &sb);
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if (statResult == 0)
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{
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numBytes = sb.st_size;
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}
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m_slice = seekNPT / m_hlsSink->getSliceDuration();
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seekNPT = m_slice * m_hlsSink->getSliceDuration();
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numBytes = m_hlsSink->getHLSBufferSize(m_slice);
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std::cout << "seek seekNPT:" << seekNPT << " slice:" << m_slice << " numBytes:" << numBytes << std::endl;
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}
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virtual FramedSource* getStreamSource(void* streamToken)
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{
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std::ostringstream os;
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os << m_slice+m_videoSink->m_firstslice << ".ts";
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return ByteStreamFileSource::createNew(envir(), os.str().c_str());
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unsigned int size = m_hlsSink->getHLSBufferSize(m_slice);
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u_int8_t* content = new u_int8_t[size];
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memcpy(content, m_hlsSink->getHLSBuffer(m_slice), size);
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return ByteStreamMemoryBufferSource::createNew(envir(), content, size);
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}
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protected:
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const std::string m_format;
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unsigned int m_slice;
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HLSSink * m_videoSink;
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HLSSink * m_hlsSink;
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};
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#endif
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@ -145,10 +145,3 @@ char const* UnicastServerMediaSubsession::getAuxSDPLine(RTPSink* rtpSink,FramedS
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return this->getAuxLine(dynamic_cast<V4L2DeviceSource*>(m_replicator->inputSource()), rtpSink->rtpPayloadType());
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}
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// -----------------------------------------
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// ServerMediaSubsession for Unicast
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// -----------------------------------------
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char const* HLSServerMediaSubsession::getAuxSDPLine(RTPSink* rtpSink,FramedSource* inputSource)
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{
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return this->getAuxLine(dynamic_cast<V4L2DeviceSource*>(m_replicator->inputSource()), rtpSink->rtpPayloadType());
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}
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206
src/main.cpp
206
src/main.cpp
@ -13,20 +13,17 @@
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** -------------------------------------------------------------------------*/
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#include <iostream>
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#include <sstream>
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#include "RTSPServer.hh"
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#include "RTSPCommon.hh"
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#include <sys/stat.h>
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#include <time.h>
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#ifndef _BYTE_STREAM_MEMORY_BUFFER_SOURCE_HH
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#include "ByteStreamMemoryBufferSource.hh"
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#endif
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#ifndef _TCP_STREAM_SINK_HH
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#include "TCPStreamSink.hh"
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#endif
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// -----------------------------------------
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// RTSP server supporting live HLS
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// -----------------------------------------
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class HLSServer : public RTSPServer
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{
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@ -34,24 +31,59 @@ class HLSServer : public RTSPServer
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{
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public:
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HLSClientConnection(RTSPServer& ourServer, int clientSocket, struct sockaddr_in clientAddr)
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: RTSPServer::RTSPClientConnection(ourServer, clientSocket, clientAddr), fClientSessionId(0), fStreamSource(NULL), fPlaylistSource(NULL), fTCPSink(NULL) {
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: RTSPServer::RTSPClientConnection(ourServer, clientSocket, clientAddr), fClientSessionId(0), fTCPSink(NULL) {
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}
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~HLSClientConnection() {
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if (fTCPSink != NULL) fTCPSink->stopPlaying();
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Medium::close(fPlaylistSource);
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Medium::close(fStreamSource);
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if (fTCPSink != NULL)
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{
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fTCPSink->stopPlaying();
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Medium::close(fTCPSink);
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}
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}
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private:
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void sendHeader(const char* contentType, unsigned int contentLength)
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{
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// Construct our response:
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snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
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"HTTP/1.1 200 OK\r\n"
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"%s"
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"Server: LIVE555 Streaming Media v%s\r\n"
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"Content-Type: %s\r\n"
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"Content-Length: %d\r\n"
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"\r\n",
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dateHeader(),
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LIVEMEDIA_LIBRARY_VERSION_STRING,
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contentType,
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contentLength);
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// Send the response header
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send(fClientOutputSocket, (char const*)fResponseBuffer, strlen((char*)fResponseBuffer), 0);
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fResponseBuffer[0] = '\0'; // We've already sent the response. This tells the calling code not to send it again.
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}
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void streamSource(FramedSource* source)
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{
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if (fTCPSink != NULL)
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{
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fTCPSink->stopPlaying();
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Medium::close(fTCPSink);
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fTCPSink = NULL;
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}
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if (source != NULL)
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{
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fTCPSink = TCPStreamSink::createNew(envir(), fClientOutputSocket);
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fTCPSink->startPlaying(*source, afterStreaming, this);
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}
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}
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void sendPlayList(char const* urlSuffix)
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{
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// First, make sure that the named file exists, and is streamable:
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ServerMediaSession* session = fOurServer.lookupServerMediaSession(urlSuffix);
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if (session == NULL) {
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std::cout << "============no session==============" << std::endl;
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handleHTTPCmd_notFound();
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return;
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}
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@ -59,77 +91,40 @@ class HLSServer : public RTSPServer
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// To be able to construct a playlist for the requested file, we need to know its duration:
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float duration = session->duration();
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if (duration <= 0.0) {
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std::cout << "============no duration==============" << std::endl;
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handleHTTPCmd_notSupported();
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return;
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}
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// Now, construct the playlist. It will consist of a prefix, one or more media file specifications, and a suffix:
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unsigned const maxIntLen = 10; // >= the maximum possible strlen() of an integer in the playlist
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char const* const playlistPrefixFmt =
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"#EXTM3U\r\n"
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"#EXT-X-ALLOW-CACHE:YES\r\n"
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"#EXT-X-MEDIA-SEQUENCE:%d\r\n"
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"#EXT-X-TARGETDURATION:%d\r\n";
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unsigned const playlistPrefixFmt_maxLen = strlen(playlistPrefixFmt) + maxIntLen;
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char const* const playlistMediaFileSpecFmt =
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"#EXTINF:%d,\r\n"
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"%s?segment=%d,%d\r\n";
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unsigned const playlistMediaFileSpecFmt_maxLen = strlen(playlistMediaFileSpecFmt) + maxIntLen + strlen(urlSuffix) + 2*maxIntLen;
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// Figure out the 'target duration' that will produce a playlist that will fit in our response buffer. (But make it at least 10s.)
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unsigned const playlistMaxSize = 10000;
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unsigned const mediaFileSpecsMaxSize = playlistMaxSize - (playlistPrefixFmt_maxLen /*+ playlistSuffixFmt_maxLen*/);
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unsigned const maxNumMediaFileSpecs = mediaFileSpecsMaxSize/playlistMediaFileSpecFmt_maxLen;
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unsigned targetDuration = (unsigned)(duration/maxNumMediaFileSpecs + 1);
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if (targetDuration < 10) targetDuration = 10;
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unsigned int startTime = 0;
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char* playlist = new char[playlistMaxSize];
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char* s = playlist;
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sprintf(s, playlistPrefixFmt, startTime,targetDuration);
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s += strlen(s);
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unsigned durSoFar = startTime;
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while (1) {
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unsigned dur = targetDuration < duration ? targetDuration : (unsigned)duration;
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duration -= dur;
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sprintf(s, playlistMediaFileSpecFmt, dur, urlSuffix, durSoFar, dur);
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s += strlen(s);
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if (duration < 1.0) break;
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durSoFar += dur;
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ServerMediaSubsessionIterator iter(*session);
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ServerMediaSubsession* subsession = iter.next();
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if (subsession == NULL) {
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handleHTTPCmd_notSupported();
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return;
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}
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unsigned playlistLen = s - playlist;
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unsigned int startTime = subsession->getCurrentNPT(NULL);
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unsigned sliceDuration = 10;
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std::ostringstream os;
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os << "#EXTM3U\r\n"
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<< "#EXT-X-ALLOW-CACHE:YES\r\n"
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<< "#EXT-X-MEDIA-SEQUENCE:" << startTime << "\r\n"
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<< "#EXT-X-TARGETDURATION:" << sliceDuration << "\r\n";
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// Construct our response:
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snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
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"HTTP/1.1 200 OK\r\n"
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"%s"
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"Server: LIVE555 Streaming Media v%s\r\n"
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"Content-Length: %d\r\n"
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"Content-Type: application/vnd.apple.mpegurl\r\n"
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"\r\n",
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dateHeader(),
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LIVEMEDIA_LIBRARY_VERSION_STRING,
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playlistLen);
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// Send the response header now, because we're about to add more data (the playlist):
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send(fClientOutputSocket, (char const*)fResponseBuffer, strlen((char*)fResponseBuffer), 0);
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fResponseBuffer[0] = '\0'; // We've already sent the response. This tells the calling code not to send it again.
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// Then, send the playlist. Because it's large, we don't do so using "send()", because that might not send it all at once.
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// Instead, we stream the playlist over the TCP socket:
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if (fPlaylistSource != NULL) { // sanity check
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if (fTCPSink != NULL) fTCPSink->stopPlaying();
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Medium::close(fPlaylistSource);
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for (unsigned int slice=0; slice*sliceDuration<duration; slice++)
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{
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os << "#EXTINF:" << sliceDuration << ",\r\n";
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os << urlSuffix << "?segment=" << (startTime+slice*sliceDuration) << "\r\n";
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}
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fPlaylistSource = ByteStreamMemoryBufferSource::createNew(envir(), (u_int8_t*)playlist, playlistLen);
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if (fTCPSink == NULL) fTCPSink = TCPStreamSink::createNew(envir(), fClientOutputSocket);
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fTCPSink->startPlaying(*fPlaylistSource, afterStreaming, this);
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const std::string& playList(os.str());
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// send response header
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this->sendHeader("application/vnd.apple.mpegurl", playList.size());
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// stream body
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u_int8_t* playListBuffer = new u_int8_t[playList.size()];
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memcpy(playListBuffer, playList.c_str(), playList.size());
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this->streamSource(ByteStreamMemoryBufferSource::createNew(envir(), playListBuffer, playList.size()));
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}
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|
||||
void handleHTTPCmd_StreamingGET(char const* urlSuffix, char const* /*fullRequestStr*/) {
|
||||
@ -138,8 +133,8 @@ class HLSServer : public RTSPServer
|
||||
do {
|
||||
char const* questionMarkPos = strrchr(urlSuffix, '?');
|
||||
if (questionMarkPos == NULL) break;
|
||||
unsigned offsetInSeconds, durationInSeconds;
|
||||
if (sscanf(questionMarkPos, "?segment=%u,%u", &offsetInSeconds, &durationInSeconds) != 2) break;
|
||||
unsigned offsetInSeconds;
|
||||
if (sscanf(questionMarkPos, "?segment=%u", &offsetInSeconds) != 1) break;
|
||||
|
||||
char* streamName = strDup(urlSuffix);
|
||||
streamName[questionMarkPos-urlSuffix] = '\0';
|
||||
@ -173,42 +168,21 @@ class HLSServer : public RTSPServer
|
||||
|
||||
// Seek the stream source to the desired place, with the desired duration, and (as a side effect) get the number of bytes:
|
||||
double dOffsetInSeconds = (double)offsetInSeconds;
|
||||
u_int64_t numBytes;
|
||||
subsession->seekStream(fClientSessionId, streamToken, dOffsetInSeconds, (double)durationInSeconds, numBytes);
|
||||
unsigned numTSBytesToStream = (unsigned)numBytes;
|
||||
std::cout << "numTSBytesToStream:" << numTSBytesToStream << std::endl;
|
||||
u_int64_t numBytes = 0;
|
||||
subsession->seekStream(fClientSessionId, streamToken, dOffsetInSeconds, 0.0, numBytes);
|
||||
|
||||
if (numTSBytesToStream == 0) {
|
||||
if (numBytes == 0) {
|
||||
// For some reason, we do not know the size of the requested range. We can't handle this request:
|
||||
handleHTTPCmd_notSupported();
|
||||
break;
|
||||
}
|
||||
|
||||
// Construct our response:
|
||||
snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
|
||||
"HTTP/1.1 200 OK\r\n"
|
||||
"%s"
|
||||
"Server: LIVE555 Streaming Media v%s\r\n"
|
||||
"Content-Length: %d\r\n"
|
||||
"Content-Type: text/plain; charset=ISO-8859-1\r\n"
|
||||
"\r\n",
|
||||
dateHeader(),
|
||||
LIVEMEDIA_LIBRARY_VERSION_STRING,
|
||||
numTSBytesToStream);
|
||||
// Send the response now, because we're about to add more data (from the source):
|
||||
send(fClientOutputSocket, (char const*)fResponseBuffer, strlen((char*)fResponseBuffer), 0);
|
||||
fResponseBuffer[0] = '\0'; // We've already sent the response. This tells the calling code not to send it again.
|
||||
// send response header
|
||||
this->sendHeader("video/mp2t", numBytes);
|
||||
|
||||
// stream body
|
||||
this->streamSource(subsession->getStreamSource(streamToken));
|
||||
|
||||
// Ask the media source to deliver - to the TCP sink - the desired data:
|
||||
if (fStreamSource != NULL) { // sanity check
|
||||
if (fTCPSink != NULL) fTCPSink->stopPlaying();
|
||||
Medium::close(fStreamSource);
|
||||
}
|
||||
fStreamSource = subsession->getStreamSource(streamToken);
|
||||
if (fStreamSource != NULL) {
|
||||
if (fTCPSink == NULL) fTCPSink = TCPStreamSink::createNew(envir(), fClientOutputSocket);
|
||||
fTCPSink->startPlaying(*fStreamSource, afterStreaming, this);
|
||||
}
|
||||
} while(0);
|
||||
|
||||
delete[] streamName;
|
||||
@ -218,8 +192,8 @@ class HLSServer : public RTSPServer
|
||||
this->sendPlayList(urlSuffix);
|
||||
}
|
||||
|
||||
static void afterStreaming(void* clientData) {
|
||||
std::cout << "afterStreaming" << std::endl;
|
||||
static void afterStreaming(void* clientData)
|
||||
{
|
||||
HLSServer::HLSClientConnection* clientConnection = (HLSServer::HLSClientConnection*)clientData;
|
||||
// Arrange to delete the 'client connection' object:
|
||||
if (clientConnection->fRecursionCount > 0) {
|
||||
@ -227,13 +201,11 @@ class HLSServer : public RTSPServer
|
||||
clientConnection->fIsActive = False; // will cause the object to get deleted at the end of handling the request
|
||||
} else {
|
||||
// We're no longer handling a request; delete the object now:
|
||||
// delete clientConnection;
|
||||
delete clientConnection;
|
||||
}
|
||||
}
|
||||
private:
|
||||
u_int32_t fClientSessionId;
|
||||
FramedSource* fStreamSource;
|
||||
ByteStreamMemoryBufferSource* fPlaylistSource;
|
||||
TCPStreamSink* fTCPSink;
|
||||
};
|
||||
|
||||
@ -241,7 +213,6 @@ class HLSServer : public RTSPServer
|
||||
static HLSServer* createNew(UsageEnvironment& env, Port rtspPort, UserAuthenticationDatabase* authDatabase, unsigned reclamationTestSeconds) {
|
||||
int ourSocket = setUpOurSocket(env, rtspPort);
|
||||
if (ourSocket == -1) return NULL;
|
||||
|
||||
return new HLSServer(env, ourSocket, rtspPort, authDatabase, reclamationTestSeconds);
|
||||
}
|
||||
|
||||
@ -249,9 +220,6 @@ class HLSServer : public RTSPServer
|
||||
: RTSPServer(env, ourSocket, rtspPort, authDatabase, reclamationTestSeconds) {
|
||||
}
|
||||
|
||||
virtual ~HLSServer() {
|
||||
}
|
||||
|
||||
RTSPServer::RTSPClientConnection* createNewClientConnection(int clientSocket, struct sockaddr_in clientAddr) {
|
||||
return new HLSClientConnection(*this, clientSocket, clientAddr);
|
||||
}
|
||||
@ -562,11 +530,13 @@ int main(int argc, char** argv)
|
||||
|
||||
}
|
||||
// Create Unicast Session
|
||||
addSession(rtspServer, baseUrl+url, UnicastServerMediaSubsession::createNew(*env,replicator,rtpFormat));
|
||||
|
||||
if (muxTS)
|
||||
{
|
||||
addSession(rtspServer, "hls", HLSServerMediaSubsession::createNew(*env,replicator,rtpFormat));
|
||||
addSession(rtspServer, baseUrl+url, HLSServerMediaSubsession::createNew(*env,replicator,rtpFormat));
|
||||
}
|
||||
else
|
||||
{
|
||||
addSession(rtspServer, baseUrl+url, UnicastServerMediaSubsession::createNew(*env,replicator,rtpFormat));
|
||||
}
|
||||
}
|
||||
if (out)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user