/usr/include/liveMedia/OnDemandServerMediaSubsession.hh is in liblivemedia-dev 2011.12.23-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 | /**********
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
**********/
// "liveMedia"
// Copyright (c) 1996-2012 Live Networks, Inc. All rights reserved.
// A 'ServerMediaSubsession' object that creates new, unicast, "RTPSink"s
// on demand.
// C++ header
#ifndef _ON_DEMAND_SERVER_MEDIA_SUBSESSION_HH
#define _ON_DEMAND_SERVER_MEDIA_SUBSESSION_HH
#ifndef _SERVER_MEDIA_SESSION_HH
#include "ServerMediaSession.hh"
#endif
#ifndef _RTP_SINK_HH
#include "RTPSink.hh"
#endif
#ifndef _BASIC_UDP_SINK_HH
#include "BasicUDPSink.hh"
#endif
#ifndef _RTCP_HH
#include "RTCP.hh"
#endif
class OnDemandServerMediaSubsession: public ServerMediaSubsession {
protected: // we're a virtual base class
OnDemandServerMediaSubsession(UsageEnvironment& env, Boolean reuseFirstSource,
portNumBits initialPortNum = 6970);
virtual ~OnDemandServerMediaSubsession();
protected: // redefined virtual functions
virtual char const* sdpLines();
virtual void getStreamParameters(unsigned clientSessionId,
netAddressBits clientAddress,
Port const& clientRTPPort,
Port const& clientRTCPPort,
int tcpSocketNum,
unsigned char rtpChannelId,
unsigned char rtcpChannelId,
netAddressBits& destinationAddress,
u_int8_t& destinationTTL,
Boolean& isMulticast,
Port& serverRTPPort,
Port& serverRTCPPort,
void*& streamToken);
virtual void startStream(unsigned clientSessionId, void* streamToken,
TaskFunc* rtcpRRHandler,
void* rtcpRRHandlerClientData,
unsigned short& rtpSeqNum,
unsigned& rtpTimestamp,
ServerRequestAlternativeByteHandler* serverRequestAlternativeByteHandler,
void* serverRequestAlternativeByteHandlerClientData);
virtual void pauseStream(unsigned clientSessionId, void* streamToken);
virtual void seekStream(unsigned clientSessionId, void* streamToken, double& seekNPT, double streamDuration, u_int64_t& numBytes);
virtual void setStreamScale(unsigned clientSessionId, void* streamToken, float scale);
virtual FramedSource* getStreamSource(void* streamToken);
virtual void deleteStream(unsigned clientSessionId, void*& streamToken);
protected: // new virtual functions, possibly redefined by subclasses
virtual char const* getAuxSDPLine(RTPSink* rtpSink,
FramedSource* inputSource);
virtual void seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& numBytes);
// "streamDuration", if >0.0, specifies how much data to stream, past "seekNPT". (If <=0.0, all remaining data is streamed.)
virtual void setStreamSourceScale(FramedSource* inputSource, float scale);
virtual void closeStreamSource(FramedSource *inputSource);
protected: // new virtual functions, defined by all subclasses
virtual FramedSource* createNewStreamSource(unsigned clientSessionId,
unsigned& estBitrate) = 0;
// "estBitrate" is the stream's estimated bitrate, in kbps
virtual RTPSink* createNewRTPSink(Groupsock* rtpGroupsock,
unsigned char rtpPayloadTypeIfDynamic,
FramedSource* inputSource) = 0;
private:
void setSDPLinesFromRTPSink(RTPSink* rtpSink, FramedSource* inputSource,
unsigned estBitrate);
// used to implement "sdpLines()"
protected:
char* fSDPLines;
private:
Boolean fReuseFirstSource;
portNumBits fInitialPortNum;
HashTable* fDestinationsHashTable; // indexed by client session id
void* fLastStreamToken;
char fCNAME[100]; // for RTCP
friend class StreamState;
};
// A class that represents the state of an ongoing stream. This is used only internally, in the implementation of
// "OnDemandServerMediaSubsession", but we expose the definition here, in case subclasses of "OnDemandServerMediaSubsession"
// want to access it.
class Destinations {
public:
Destinations(struct in_addr const& destAddr,
Port const& rtpDestPort,
Port const& rtcpDestPort)
: isTCP(False), addr(destAddr), rtpPort(rtpDestPort), rtcpPort(rtcpDestPort) {
}
Destinations(int tcpSockNum, unsigned char rtpChanId, unsigned char rtcpChanId)
: isTCP(True), rtpPort(0) /*dummy*/, rtcpPort(0) /*dummy*/,
tcpSocketNum(tcpSockNum), rtpChannelId(rtpChanId), rtcpChannelId(rtcpChanId) {
}
public:
Boolean isTCP;
struct in_addr addr;
Port rtpPort;
Port rtcpPort;
int tcpSocketNum;
unsigned char rtpChannelId, rtcpChannelId;
};
class StreamState {
public:
StreamState(OnDemandServerMediaSubsession& master,
Port const& serverRTPPort, Port const& serverRTCPPort,
RTPSink* rtpSink, BasicUDPSink* udpSink,
unsigned totalBW, FramedSource* mediaSource,
Groupsock* rtpGS, Groupsock* rtcpGS);
virtual ~StreamState();
void startPlaying(Destinations* destinations,
TaskFunc* rtcpRRHandler, void* rtcpRRHandlerClientData,
ServerRequestAlternativeByteHandler* serverRequestAlternativeByteHandler,
void* serverRequestAlternativeByteHandlerClientData);
void pause();
void endPlaying(Destinations* destinations);
void reclaim();
unsigned& referenceCount() { return fReferenceCount; }
Port const& serverRTPPort() const { return fServerRTPPort; }
Port const& serverRTCPPort() const { return fServerRTCPPort; }
RTPSink* rtpSink() const { return fRTPSink; }
float streamDuration() const { return fStreamDuration; }
FramedSource* mediaSource() const { return fMediaSource; }
private:
OnDemandServerMediaSubsession& fMaster;
Boolean fAreCurrentlyPlaying;
unsigned fReferenceCount;
Port fServerRTPPort, fServerRTCPPort;
RTPSink* fRTPSink;
BasicUDPSink* fUDPSink;
float fStreamDuration;
unsigned fTotalBW;
RTCPInstance* fRTCPInstance;
FramedSource* fMediaSource;
Groupsock* fRTPgs;
Groupsock* fRTCPgs;
};
#endif
|