1/**********
2This library is free software; you can redistribute it and/or modify it under
3the terms of the GNU Lesser General Public License as published by the
4Free Software Foundation; either version 3 of the License, or (at your
5option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
6
7This library is distributed in the hope that it will be useful, but WITHOUT
8ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
9FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
10more details.
11
12You should have received a copy of the GNU Lesser General Public License
13along with this library; if not, write to the Free Software Foundation, Inc.,
1451 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 AMR audio (RFC 4867)
19// C++ header
20
21#ifndef _AMR_AUDIO_RTP_SINK_HH
22#define _AMR_AUDIO_RTP_SINK_HH
23
24#ifndef _AUDIO_RTP_SINK_HH
25#include "AudioRTPSink.hh"
26#endif
27
28class AMRAudioRTPSink: public AudioRTPSink {
29public:
30 static AMRAudioRTPSink* createNew(UsageEnvironment& env,
31 Groupsock* RTPgs,
32 unsigned char rtpPayloadFormat,
33 Boolean sourceIsWideband = False,
34 unsigned numChannelsInSource = 1);
35
36 Boolean sourceIsWideband() const { return fSourceIsWideband; }
37
38protected:
39 AMRAudioRTPSink(UsageEnvironment& env, Groupsock* RTPgs,
40 unsigned char rtpPayloadFormat,
41 Boolean sourceIsWideband, unsigned numChannelsInSource);
42 // called only by createNew()
43
44 virtual ~AMRAudioRTPSink();
45
46private: // redefined virtual functions:
47 virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
48 virtual void doSpecialFrameHandling(unsigned fragmentationOffset,
49 unsigned char* frameStart,
50 unsigned numBytesInFrame,
51 struct timeval framePresentationTime,
52 unsigned numRemainingBytes);
53 virtual Boolean
54 frameCanAppearAfterPacketStart(unsigned char const* frameStart,
55 unsigned numBytesInFrame) const;
56
57 virtual unsigned specialHeaderSize() const;
58 virtual char const* auxSDPLine();
59
60private:
61 Boolean fSourceIsWideband;
62 char* fFmtpSDPLine;
63};
64
65#endif
66