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// Vorbis Audio RTP Sources
19// C++ header
20
21#ifndef _VORBIS_AUDIO_RTP_SOURCE_HH
22#define _VORBIS_AUDIO_RTP_SOURCE_HH
23
24#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
25#include "MultiFramedRTPSource.hh"
26#endif
27
28class VorbisAudioRTPSource: public MultiFramedRTPSource {
29public:
30 static VorbisAudioRTPSource*
31 createNew(UsageEnvironment& env, Groupsock* RTPgs,
32 unsigned char rtpPayloadFormat,
33 unsigned rtpTimestampFrequency);
34
35 u_int32_t curPacketIdent() const { return fCurPacketIdent; } // The current "Ident" field; only the low-order 24 bits are used
36
37protected:
38 VorbisAudioRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
39 unsigned char rtpPayloadFormat,
40 unsigned rtpTimestampFrequency);
41 // called only by createNew()
42
43 virtual ~VorbisAudioRTPSource();
44
45protected:
46 // redefined virtual functions:
47 virtual Boolean processSpecialHeader(BufferedPacket* packet,
48 unsigned& resultSpecialHeaderSize);
49 virtual char const* MIMEtype() const;
50
51private:
52 u_int32_t fCurPacketIdent; // only the low-order 24 bits are used
53};
54
55void parseVorbisOrTheoraConfigStr(char const* configStr,
56 u_int8_t*& identificationHdr, unsigned& identificationHdrSize,
57 u_int8_t*& commentHdr, unsigned& commentHdrSize,
58 u_int8_t*& setupHdr, unsigned& setupHdrSize,
59 u_int32_t& identField);
60 // Returns (in each of the result parameters) unpacked Vorbis or Theora
61 // "identification", "comment", and "setup" headers that were specified in a
62 // "config" string (in the SDP description for a Vorbis/RTP or Theora/RTP stream).
63 // Each of the "*Hdr" result arrays are dynamically allocated by this routine,
64 // and must be delete[]d by the caller.
65
66#endif
67