HLSSegmenter.hh

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This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
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// "liveMedia"
// Copyright (c) 1996-2024 Live Networks, Inc.  All rights reserved.
// A media sink that takes - as input - a MPEG Transport Stream, and outputs a series
// of MPEG Transport Stream files, each representing a segment of the input stream,
// suitable for HLS (Apple's "HTTP Live Streaming").
// C++ header
 
#ifndef _HLS_SEGMENTER_HH
#define _HLS_SEGMENTER_HH
 
#ifndef _MEDIA_SINK_HH
#include "MediaSink.hh"
#endif
 
class HLSSegmenter: public MediaSink {
public:
  typedef void (onEndOfSegmentFunc)(void* clientData,
                                    char const* segmentFileName, double segmentDuration);
  static HLSSegmenter* createNew(UsageEnvironment& env,
                                 unsigned segmentationDuration, char const* fileNamePrefix,
                                 onEndOfSegmentFunc* onEndOfSegmentFunc = NULL,
                                 void* onEndOfSegmentClientData = NULL);
 
private:
  HLSSegmenter(UsageEnvironment& env, unsigned segmentationDuration, char const* fileNamePrefix,
               onEndOfSegmentFunc* onEndOfSegmentFunc, void* onEndOfSegmentClientData);
    // called only by createNew()
  virtual ~HLSSegmenter();
 
  static void ourEndOfSegmentHandler(void* clientData, double segmentDuration);
  void ourEndOfSegmentHandler(double segmentDuration);
 
  Boolean openNextOutputSegment();
 
  static void afterGettingFrame(void* clientData, unsigned frameSize,
                                unsigned numTruncatedBytes,
                                struct timeval presentationTime,
                                unsigned durationInMicroseconds);
  virtual void afterGettingFrame(unsigned frameSize,
                                 unsigned numTruncatedBytes);
 
  static void ourOnSourceClosure(void* clientData);
  void ourOnSourceClosure();
 
private: // redefined virtual functions:
  virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
  virtual Boolean continuePlaying();
 
private:
  unsigned fSegmentationDuration;
  char const* fFileNamePrefix;
  onEndOfSegmentFunc* fOnEndOfSegmentFunc;
  void* fOnEndOfSegmentClientData;
  Boolean fHaveConfiguredUpstreamSource;
  unsigned fCurrentSegmentCounter;
  char* fOutputSegmentFileName;
  FILE* fOutFid;
  unsigned char* fOutputFileBuffer;
};
 
#endif