ByteStreamMultiFileSource.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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This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
more details.
 
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// "liveMedia"
// Copyright (c) 1996-2024 Live Networks, Inc.  All rights reserved.
// A source that consists of multiple byte-stream files, read sequentially.
// (The input is an array of file names, with a terminating 'file name' of NULL.)
// C++ header
 
#ifndef _BYTE_STREAM_MULTI_FILE_SOURCE_HH
#define _BYTE_STREAM_MULTI_FILE_SOURCE_HH
 
#ifndef _BYTE_STREAM_FILE_SOURCE_HH
#include "ByteStreamFileSource.hh"
#endif
 
class ByteStreamMultiFileSource: public FramedSource {
public:
  static ByteStreamMultiFileSource*
  createNew(UsageEnvironment& env, char const** fileNameArray,
            unsigned preferredFrameSize = 0, unsigned playTimePerFrame = 0);
  // "fileNameArray" is a pointer to an array of (char const*) file names, with
  // A 'file name' of NULL indicating the end of the array
 
  Boolean haveStartedNewFile() const { return fHaveStartedNewFile; }
  // True iff the most recently delivered frame was the first from a newly-opened file
 
protected:
  ByteStreamMultiFileSource(UsageEnvironment& env, char const** fileNameArray,
                            unsigned preferredFrameSize, unsigned playTimePerFrame);
        // called only by createNew()
 
  virtual ~ByteStreamMultiFileSource();
 
private:
  // redefined virtual functions:
  virtual void doGetNextFrame();
 
private:
  static void onSourceClosure(void* clientData);
  void onSourceClosure1();
  static void afterGettingFrame(void* clientData,
                                unsigned frameSize, unsigned numTruncatedBytes,
                                struct timeval presentationTime,
                                unsigned durationInMicroseconds);
 
private:
  unsigned fPreferredFrameSize;
  unsigned fPlayTimePerFrame;
  unsigned fNumSources;
  unsigned fCurrentlyReadSourceNumber;
  Boolean fHaveStartedNewFile;
  char const** fFileNameArray;
  ByteStreamFileSource** fSourceArray;
};
 
#endif