1 /********** 2 This library is free software; you can redistribute it and/or modify it under 3 the terms of the GNU Lesser General Public License as published by the 4 Free Software Foundation; either version 3 of the License, or (at your 5 option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.) 6 7 This library is distributed in the hope that it will be useful, but WITHOUT 8 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 9 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for 10 more details. 11 12 You should have received a copy of the GNU Lesser General Public License 13 along with this library; if not, write to the Free Software Foundation, Inc., 14 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 15 **********/ 16 // "liveMedia" 17 // Copyright (c) 1996-2020 Live Networks, Inc. All rights reserved. 18 // RTP sink for AC3 audio 19 // C++ header 20 21 #ifndef _AC3_AUDIO_RTP_SINK_HH 22 #define _AC3_AUDIO_RTP_SINK_HH 23 24 #ifndef _AUDIO_RTP_SINK_HH 25 #include "AudioRTPSink.hh" 26 #endif 27 28 class AC3AudioRTPSink: public AudioRTPSink { 29 public: 30 static AC3AudioRTPSink* createNew(UsageEnvironment& env, 31 Groupsock* RTPgs, 32 u_int8_t rtpPayloadFormat, 33 u_int32_t rtpTimestampFrequency); 34 35 protected: 36 AC3AudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs, 37 u_int8_t rtpPayloadFormat, 38 u_int32_t rtpTimestampFrequency); 39 // called only by createNew() 40 41 virtual ~AC3AudioRTPSink(); 42 43 private: // redefined virtual functions: 44 virtual Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart, 45 unsigned numBytesInFrame) const; 46 virtual void doSpecialFrameHandling(unsigned fragmentationOffset, 47 unsigned char* frameStart, 48 unsigned numBytesInFrame, 49 struct timeval framePresentationTime, 50 unsigned numRemainingBytes); 51 virtual unsigned specialHeaderSize() const; 52 53 private: 54 unsigned char fTotNumFragmentsUsed; // used only if a frame gets fragmented across multiple packets 55 }; 56 57 #endif 58