ADTSAudioFileSource.hh

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This library is free software; you can redistribute it and/or modify it under
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FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
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// "liveMedia"
// Copyright (c) 1996-2021 Live Networks, Inc.  All rights reserved.
// A source object for AAC audio files in ADTS format
// C++ header
 
#ifndef _ADTS_AUDIO_FILE_SOURCE_HH
#define _ADTS_AUDIO_FILE_SOURCE_HH
 
#ifndef _FRAMED_FILE_SOURCE_HH
#include "FramedFileSource.hh"
#endif
 
class ADTSAudioFileSource: public FramedFileSource {
public:
  static ADTSAudioFileSource* createNew(UsageEnvironment& env,
                                       char const* fileName);
 
  unsigned samplingFrequency() const { return fSamplingFrequency; }
  unsigned numChannels() const { return fNumChannels; }
  char const* configStr() const { return fConfigStr; }
      // returns the 'AudioSpecificConfig' for this stream (in ASCII form)
 
private:
  ADTSAudioFileSource(UsageEnvironment& env, FILE* fid, u_int8_t profile,
                      u_int8_t samplingFrequencyIndex, u_int8_t channelConfiguration);
        // called only by createNew()
 
  virtual ~ADTSAudioFileSource();
 
private:
  // redefined virtual functions:
  virtual void doGetNextFrame();
 
private:
  unsigned fSamplingFrequency;
  unsigned fNumChannels;
  unsigned fuSecsPerFrame;
  char fConfigStr[5];
};
 
#endif