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// A filter that breaks up an MPEG 1 or 2 video elementary stream into
19// frames for: Video_Sequence_Header, GOP_Header, Picture_Header
20// C++ header
21
22#ifndef _MPEG_1OR2_VIDEO_STREAM_FRAMER_HH
23#define _MPEG_1OR2_VIDEO_STREAM_FRAMER_HH
24
25#ifndef _MPEG_VIDEO_STREAM_FRAMER_HH
26#include "MPEGVideoStreamFramer.hh"
27#endif
28
29class MPEG1or2VideoStreamFramer: public MPEGVideoStreamFramer {
30public:
31 static MPEG1or2VideoStreamFramer*
32 createNew(UsageEnvironment& env, FramedSource* inputSource,
33 Boolean iFramesOnly = False,
34 double vshPeriod = 5.0
35 /* how often (in seconds) to inject a Video_Sequence_Header,
36 if one doesn't already appear in the stream */);
37
38protected:
39 MPEG1or2VideoStreamFramer(UsageEnvironment& env,
40 FramedSource* inputSource,
41 Boolean iFramesOnly, double vshPeriod,
42 Boolean createParser = True);
43 // called only by createNew(), or by subclass constructors
44 virtual ~MPEG1or2VideoStreamFramer();
45
46private:
47 // redefined virtual functions:
48 virtual Boolean isMPEG1or2VideoStreamFramer() const;
49
50private:
51 double getCurrentPTS() const;
52
53 friend class MPEG1or2VideoStreamParser; // hack
54};
55
56#endif
57