live: liveMedia/include/MPEG4GenericRTPSink.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) 1996-2008 Live Networks, Inc.  All rights reserved.
00018 // MPEG4-GENERIC ("audio", "video", or "application") RTP stream sinks
00019 // C++ header
00020 
00021 #ifndef _MPEG4_GENERIC_RTP_SINK_HH
00022 #define _MPEG4_GENERIC_RTP_SINK_HH
00023 
00024 #ifndef _MULTI_FRAMED_RTP_SINK_HH
00025 #include "MultiFramedRTPSink.hh"
00026 #endif
00027 
00028 class MPEG4GenericRTPSink: public MultiFramedRTPSink {
00029 public:
00030   static MPEG4GenericRTPSink*
00031   createNew(UsageEnvironment& env, Groupsock* RTPgs,
00032             u_int8_t rtpPayloadFormat, u_int32_t rtpTimestampFrequency,
00033             char const* sdpMediaTypeString, char const* mpeg4Mode,
00034             char const* configString,
00035             unsigned numChannels = 1);
00036 
00037 protected:
00038   MPEG4GenericRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
00039                       u_int8_t rtpPayloadFormat,
00040                       u_int32_t rtpTimestampFrequency,
00041                       char const* sdpMediaTypeString,
00042                       char const* mpeg4Mode, char const* configString,
00043                       unsigned numChannels);
00044         // called only by createNew()
00045 
00046   virtual ~MPEG4GenericRTPSink();
00047 
00048 private: // redefined virtual functions:
00049   virtual
00050   Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
00051                                          unsigned numBytesInFrame) const;
00052   virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
00053                                       unsigned char* frameStart,
00054                                       unsigned numBytesInFrame,
00055                                       struct timeval frameTimestamp,
00056                                       unsigned numRemainingBytes);
00057   virtual unsigned specialHeaderSize() const;
00058 
00059   virtual char const* sdpMediaType() const;
00060 
00061   virtual char const* auxSDPLine(); // for the "a=fmtp:" SDP line
00062 
00063 private:
00064   char const* fSDPMediaTypeString;
00065   char const* fMPEG4Mode;
00066   char const* fConfigString;
00067   char* fFmtpSDPLine;
00068 };
00069 
00070 #endif