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// H.263+ Video RTP Sources
19// C++ header
20
21#ifndef _H263_PLUS_VIDEO_RTP_SOURCE_HH
22#define _H263_PLUS_VIDEO_RTP_SOURCE_HH
23
24#ifndef _MULTI_FRAMED_RTP_SOURCE_HH
25#include "MultiFramedRTPSource.hh"
26#endif
27
28#define SPECIAL_HEADER_BUFFER_SIZE 1000
29
30class H263plusVideoRTPSource: public MultiFramedRTPSource {
31public:
32 static H263plusVideoRTPSource*
33 createNew(UsageEnvironment& env, Groupsock* RTPgs,
34 unsigned char rtpPayloadFormat,
35 unsigned rtpTimestampFrequency = 90000);
36
37 // A data structure that stores copies of the special header bytes
38 // from the most recent frame's RTP packets:
39 unsigned char fNumSpecialHeaders;
40 unsigned fSpecialHeaderBytesLength;
41 unsigned char fSpecialHeaderBytes[SPECIAL_HEADER_BUFFER_SIZE];
42 unsigned fPacketSizes[256];
43
44protected:
45 virtual ~H263plusVideoRTPSource();
46
47private:
48 H263plusVideoRTPSource(UsageEnvironment& env, Groupsock* RTPgs,
49 unsigned char rtpPayloadFormat,
50 unsigned rtpTimestampFrequency);
51 // called only by createNew()
52
53private:
54 // redefined virtual functions:
55 virtual Boolean processSpecialHeader(BufferedPacket* packet,
56 unsigned& resultSpecialHeaderSize);
57 virtual char const* MIMEtype() const;
58};
59
60#endif
61