/**********
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This library is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation; either version 3 of the License, or (at your
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option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
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This library is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this library; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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**********/
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// Copyright (c) 1996-2017, Live Networks, Inc. All rights reserved
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// A test program that reads a H.264 Elementary Stream video file
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// and streams it using RTP
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// main program
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//
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// NOTE: For this application to work, the H.264 Elementary Stream video file *must* contain SPS and PPS NAL units,
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// ideally at or near the start of the file. These SPS and PPS NAL units are used to specify 'configuration' information
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// that is set in the output stream's SDP description (by the RTSP server that is built in to this application).
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// Note also that - unlike some other "*Streamer" demo applications - the resulting stream can be received only using a
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// RTSP client (such as "openRTSP")
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#include <liveMedia.hh>
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#include <BasicUsageEnvironment.hh>
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#include <GroupsockHelper.hh>
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UsageEnvironment* env;
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char const* inputFileName = "test.264";
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H264VideoStreamFramer* videoSource;
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RTPSink* videoSink;
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void play(); // forward
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int main(int argc, char** argv) {
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// Begin by setting up our usage environment:
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TaskScheduler* scheduler = BasicTaskScheduler::createNew();
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env = BasicUsageEnvironment::createNew(*scheduler);
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// Create 'groupsocks' for RTP and RTCP:
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struct in_addr destinationAddress;
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destinationAddress.s_addr = chooseRandomIPv4SSMAddress(*env);
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// Note: This is a multicast address. If you wish instead to stream
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// using unicast, then you should use the "testOnDemandRTSPServer"
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// test program - not this test program - as a model.
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const unsigned short rtpPortNum = 18888;
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const unsigned short rtcpPortNum = rtpPortNum+1;
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const unsigned char ttl = 255;
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const Port rtpPort(rtpPortNum);
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const Port rtcpPort(rtcpPortNum);
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Groupsock rtpGroupsock(*env, destinationAddress, rtpPort, ttl);
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rtpGroupsock.multicastSendOnly(); // we're a SSM source
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Groupsock rtcpGroupsock(*env, destinationAddress, rtcpPort, ttl);
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rtcpGroupsock.multicastSendOnly(); // we're a SSM source
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// Create a 'H264 Video RTP' sink from the RTP 'groupsock':
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OutPacketBuffer::maxSize = 100000;
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videoSink = H264VideoRTPSink::createNew(*env, &rtpGroupsock, 96);
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// Create (and start) a 'RTCP instance' for this RTP sink:
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const unsigned estimatedSessionBandwidth = 500; // in kbps; for RTCP b/w share
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const unsigned maxCNAMElen = 100;
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unsigned char CNAME[maxCNAMElen+1];
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gethostname((char*)CNAME, maxCNAMElen);
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CNAME[maxCNAMElen] = '\0'; // just in case
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RTCPInstance* rtcp
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= RTCPInstance::createNew(*env, &rtcpGroupsock,
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estimatedSessionBandwidth, CNAME,
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videoSink, NULL /* we're a server */,
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True /* we're a SSM source */);
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// Note: This starts RTCP running automatically
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RTSPServer* rtspServer = RTSPServer::createNew(*env, 8554);
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if (rtspServer == NULL) {
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*env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
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exit(1);
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}
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ServerMediaSession* sms
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= ServerMediaSession::createNew(*env, "testStream", inputFileName,
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"Session streamed by \"testH264VideoStreamer\"",
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True /*SSM*/);
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sms->addSubsession(PassiveServerMediaSubsession::createNew(*videoSink, rtcp));
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rtspServer->addServerMediaSession(sms);
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char* url = rtspServer->rtspURL(sms);
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*env << "Play this stream using the URL \"" << url << "\"\n";
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delete[] url;
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// Start the streaming:
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*env << "Beginning streaming...\n";
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play();
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env->taskScheduler().doEventLoop(); // does not return
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return 0; // only to prevent compiler warning
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}
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void afterPlaying(void* /*clientData*/) {
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*env << "...done reading from file\n";
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videoSink->stopPlaying();
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Medium::close(videoSource);
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// Note that this also closes the input file that this source read from.
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// Start playing once again:
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play();
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}
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void play() {
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// Open the input file as a 'byte-stream file source':
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ByteStreamFileSource* fileSource
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= ByteStreamFileSource::createNew(*env, inputFileName);
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if (fileSource == NULL) {
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*env << "Unable to open file \"" << inputFileName
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<< "\" as a byte-stream file source\n";
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exit(1);
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}
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FramedSource* videoES = fileSource;
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// Create a framer for the Video Elementary Stream:
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videoSource = H264VideoStreamFramer::createNew(*env, videoES);
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// Finally, start playing:
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*env << "Beginning to read from file...\n";
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videoSink->startPlaying(*videoSource, afterPlaying, videoSink);
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}
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