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MPEG1or2AudioStreamFramer.hh
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2 This library is free software; you can redistribute it and/or modify it under
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7 This library is distributed in the hope that it will be useful, but WITHOUT
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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) 1996-2021 Live Networks, Inc. All rights reserved.
18 // A filter that breaks up an MPEG (1,2) audio elementary stream into frames
19 // C++ header
20 
21 #ifndef _MPEG_1OR2_AUDIO_STREAM_FRAMER_HH
22 #define _MPEG_1OR2_AUDIO_STREAM_FRAMER_HH
23 
24 #ifndef _FRAMED_FILTER_HH
25 #include "FramedFilter.hh"
26 #endif
27 
29 public:
32  Boolean syncWithInputSource = False);
33  // If "syncWithInputSource" is True, the stream's presentation time
34  // will be reset to that of the input source, whenever new data
35  // is read from it.
36 
37  void flushInput(); // called if there is a discontinuity (seeking) in the input
38 
39 private:
41  Boolean syncWithInputSource);
42  // called only by createNew()
44 
45  static void continueReadProcessing(void* clientData,
46  unsigned char* ptr, unsigned size,
47  struct timeval presentationTime);
49 
50  void resetPresentationTime(struct timeval newPresentationTime);
51  // useful if we're being synced with a separate (e.g., video) stream
52 
53 private:
54  // redefined virtual functions:
55  virtual void doGetNextFrame();
56 
57 private:
58  void reset();
59  struct timeval currentFramePlayTime() const;
60 
61 private:
63  struct timeval fNextFramePresentationTime;
64 
65 private: // parsing state
67  friend class MPEG1or2AudioStreamParser; // hack
68 };
69 
70 #endif
const Boolean False
Definition: Boolean.hh:28
unsigned char Boolean
Definition: Boolean.hh:25
FramedSource * inputSource() const
Definition: FramedFilter.hh:30
void resetPresentationTime(struct timeval newPresentationTime)
class MPEG1or2AudioStreamParser * fParser
static void continueReadProcessing(void *clientData, unsigned char *ptr, unsigned size, struct timeval presentationTime)
virtual void doGetNextFrame()
struct timeval currentFramePlayTime() const
virtual ~MPEG1or2AudioStreamFramer()
static MPEG1or2AudioStreamFramer * createNew(UsageEnvironment &env, FramedSource *inputSource, Boolean syncWithInputSource=False)
MPEG1or2AudioStreamFramer(UsageEnvironment &env, FramedSource *inputSource, Boolean syncWithInputSource)