live: liveMedia/include/MPEG4ESVideoRTPSink.hh Source File

00001 /**********
00002 This library is free software; you can redistribute it and/or modify it under
00003 the terms of the GNU Lesser General Public License as published by the
00004 Free Software Foundation; either version 2.1 of the License, or (at your
00005 option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
00006 
00007 This library is distributed in the hope that it will be useful, but WITHOUT
00008 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00009 FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
00010 more details.
00011 
00012 You should have received a copy of the GNU Lesser General Public License
00013 along with this library; if not, write to the Free Software Foundation, Inc.,
00014 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
00015 **********/
00016 // "liveMedia"
00017 // Copyright (c) 1996-2012 Live Networks, Inc.  All rights reserved.
00018 // RTP sink for MPEG-4 Elementary Stream video (RFC 3016)
00019 // C++ header
00020 
00021 #ifndef _MPEG4ES_VIDEO_RTP_SINK_HH
00022 #define _MPEG4ES_VIDEO_RTP_SINK_HH
00023 
00024 #ifndef _VIDEO_RTP_SINK_HH
00025 #include "VideoRTPSink.hh"
00026 #endif
00027 
00028 class MPEG4ESVideoRTPSink: public VideoRTPSink {
00029 public:
00030   static MPEG4ESVideoRTPSink* createNew(UsageEnvironment& env,
00031                                         Groupsock* RTPgs, unsigned char rtpPayloadFormat,
00032                                         u_int32_t rtpTimestampFrequency = 90000);
00033   static MPEG4ESVideoRTPSink* createNew(UsageEnvironment& env,
00034                                         Groupsock* RTPgs, unsigned char rtpPayloadFormat, u_int32_t rtpTimestampFrequency,
00035                                         u_int8_t profileAndLevelIndication, char const* configStr);
00036     // an optional variant of "createNew()", useful if we know, in advance, the stream's 'configuration' info.
00037 
00038 
00039 protected:
00040   MPEG4ESVideoRTPSink(UsageEnvironment& env, Groupsock* RTPgs, unsigned char rtpPayloadFormat, u_int32_t rtpTimestampFrequency,
00041                       u_int8_t profileAndLevelIndication = 0, char const* configStr = NULL);
00042         // called only by createNew()
00043 
00044   virtual ~MPEG4ESVideoRTPSink();
00045 
00046 protected: // redefined virtual functions:
00047   virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
00048 
00049   virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
00050                                       unsigned char* frameStart,
00051                                       unsigned numBytesInFrame,
00052                                       struct timeval framePresentationTime,
00053                                       unsigned numRemainingBytes);
00054   virtual Boolean allowFragmentationAfterStart() const;
00055   virtual Boolean
00056   frameCanAppearAfterPacketStart(unsigned char const* frameStart,
00057                                  unsigned numBytesInFrame) const;
00058 
00059   virtual char const* auxSDPLine();
00060 
00061 protected:
00062   Boolean fVOPIsPresent;
00063 
00064 private:
00065   u_int8_t fProfileAndLevelIndication;
00066   unsigned char* fConfigBytes;
00067   unsigned fNumConfigBytes;
00068 
00069   char* fFmtpSDPLine;
00070 };
00071 
00072 #endif