text: /**********
  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
  Free Software Foundation; either version 3 of the License, or (at your
  option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
  
  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.
  
  You should have received a copy of the GNU Lesser General Public License
  along with this library; if not, write to the Free Software Foundation, Inc.,
  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
  **********/
  // "liveMedia"
  // Copyright (c) 1996-2018 Live Networks, Inc.  All rights reserved.
  // A class for streaming data from a (static) memory buffer, as if it were a file.
  // C++ header
  
  #ifndef _BYTE_STREAM_MEMORY_BUFFER_SOURCE_HH
  #define _BYTE_STREAM_MEMORY_BUFFER_SOURCE_HH
  
  #ifndef _FRAMED_SOURCE_HH
  #include "FramedSource.hh"
  #endif
  
  class ByteStreamMemoryBufferSource: public FramedSource {
  public:
    static ByteStreamMemoryBufferSource* createNew(UsageEnvironment& env,
  						 u_int8_t* buffer, u_int64_t bufferSize,
  						 Boolean deleteBufferOnClose = True,
  						 unsigned preferredFrameSize = 0,
  						 unsigned playTimePerFrame = 0);
        // "preferredFrameSize" == 0 means 'no preference'
        // "playTimePerFrame" is in microseconds
  
    u_int64_t bufferSize() const { return fBufferSize; }
  
    void seekToByteAbsolute(u_int64_t byteNumber, u_int64_t numBytesToStream = 0);
      // if "numBytesToStream" is >0, then we limit the stream to that number of bytes, before treating it as EOF
    void seekToByteRelative(int64_t offset, u_int64_t numBytesToStream = 0);
  
  protected:
    ByteStreamMemoryBufferSource(UsageEnvironment& env,
  			       u_int8_t* buffer, u_int64_t bufferSize,
  			       Boolean deleteBufferOnClose,
  			       unsigned preferredFrameSize,
  			       unsigned playTimePerFrame);
  	// called only by createNew()
  
    virtual ~ByteStreamMemoryBufferSource();
  
  private:
    // redefined virtual functions:
    virtual void doGetNextFrame();
  
  private:
    u_int8_t* fBuffer;
    u_int64_t fBufferSize;
    u_int64_t fCurIndex;
    Boolean fDeleteBufferOnClose;
    unsigned fPreferredFrameSize;
    unsigned fPlayTimePerFrame;
    unsigned fLastPlayTime;
    Boolean fLimitNumBytesToStream;
    u_int64_t fNumBytesToStream; // used iff "fLimitNumBytesToStream" is True
  };
  
  #endif
  