live: liveMedia/include/AC3AudioRTPSink.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 // RTP sink for AC3 audio
00019 // C++ header
00020 
00021 #ifndef _AC3_AUDIO_RTP_SINK_HH
00022 #define _AC3_AUDIO_RTP_SINK_HH
00023 
00024 #ifndef _AUDIO_RTP_SINK_HH
00025 #include "AudioRTPSink.hh"
00026 #endif
00027 
00028 class AC3AudioRTPSink: public AudioRTPSink {
00029 public:
00030   static AC3AudioRTPSink* createNew(UsageEnvironment& env,
00031                                     Groupsock* RTPgs,
00032                                     u_int8_t rtpPayloadFormat,
00033                                     u_int32_t rtpTimestampFrequency);
00034 
00035 protected:
00036   AC3AudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
00037                   u_int8_t rtpPayloadFormat,
00038                   u_int32_t rtpTimestampFrequency);
00039         // called only by createNew()
00040 
00041   virtual ~AC3AudioRTPSink();
00042 
00043 private: // redefined virtual functions:
00044   virtual
00045   Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart,
00046                                          unsigned numBytesInFrame) const;
00047   virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
00048                                       unsigned char* frameStart,
00049                                       unsigned numBytesInFrame,
00050                                       struct timeval frameTimestamp,
00051                                       unsigned numRemainingBytes);
00052   virtual unsigned specialHeaderSize() const;
00053 };
00054 
00055 #endif