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 // MPEG4-GENERIC ("audio", "video", or "application") RTP stream sinks 19 // C++ header 20 21 #ifndef _MPEG4_GENERIC_RTP_SINK_HH 22 #define _MPEG4_GENERIC_RTP_SINK_HH 23 24 #ifndef _MULTI_FRAMED_RTP_SINK_HH 25 #include "MultiFramedRTPSink.hh" 26 #endif 27 28 class MPEG4GenericRTPSink: public MultiFramedRTPSink { 29 public: 30 static MPEG4GenericRTPSink* 31 createNew(UsageEnvironment& env, Groupsock* RTPgs, 32 u_int8_t rtpPayloadFormat, u_int32_t rtpTimestampFrequency, 33 char const* sdpMediaTypeString, char const* mpeg4Mode, 34 char const* configString, 35 unsigned numChannels = 1); 36 37 protected: 38 MPEG4GenericRTPSink(UsageEnvironment& env, Groupsock* RTPgs, 39 u_int8_t rtpPayloadFormat, 40 u_int32_t rtpTimestampFrequency, 41 char const* sdpMediaTypeString, 42 char const* mpeg4Mode, char const* configString, 43 unsigned numChannels); 44 // called only by createNew() 45 46 virtual ~MPEG4GenericRTPSink(); 47 48 private: // redefined virtual functions: 49 virtual 50 Boolean frameCanAppearAfterPacketStart(unsigned char const* frameStart, 51 unsigned numBytesInFrame) const; 52 virtual void doSpecialFrameHandling(unsigned fragmentationOffset, 53 unsigned char* frameStart, 54 unsigned numBytesInFrame, 55 struct timeval framePresentationTime, 56 unsigned numRemainingBytes); 57 virtual unsigned specialHeaderSize() const; 58 59 virtual char const* sdpMediaType() const; 60 61 virtual char const* auxSDPLine(); // for the "a=fmtp:" SDP line 62 63 private: 64 char const* fSDPMediaTypeString; 65 char const* fMPEG4Mode; 66 char const* fConfigString; 67 char* fFmtpSDPLine; 68 }; 69 70 #endif 71