/home/marsyas/marsyas/src/marsyas/MP3FileSource.h

/*
** Copyright (C) 1998-2010 George Tzanetakis <gtzan@cs.cmu.edu>
**  
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
** 
** This program 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 General Public License for more details.
** 
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software 
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/

#ifndef MARSYAS_MP3SOURCE_H
#define MARSYAS_MP3SOURCE_H

#include <cstdio>

#ifndef WIN32
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <fcntl.h>
#endif 

#include "common_header.h"
#include "AbsSoundFileSource.h"

#ifdef MARSYAS_MAD
extern "C" {
#include "mad.h"
}
#endif 

namespace Marsyas
{
    class MP3FileSource: public AbsSoundFileSource
    {
        private:
            MarControlPtr ctrl_pos_;
            void addControls();
            void myUpdate(MarControlPtr sender);
            mrs_natural getLinear16(realvec& slice);

#ifdef MARSYAS_MAD

            inline signed int scale(mad_fixed_t sample);
            void madStructInitialize();
            void madStructFinish();
#endif

            void fillStream( long offset = 0 );
            void closeFile(); 

            void  PrintFrameInfo(struct mad_header *Header);
  
            // MAD stuff
#ifdef MARSYAS_MAD
            struct mad_stream stream;
            struct mad_frame frame;
            struct mad_synth synth;
#endif

            mrs_natural fileSize_; 
            mrs_natural frameSamples_;
            mrs_natural totalFrames_;
            mrs_natural frameCount_;
            unsigned char* ptr_;
            int fd;
            FILE* fp;
            struct stat myStat;  
  
            // variables for buffer balancing
            int bufferSize_;
            mrs_natural currentPos_;
            realvec reservoir_;
            mrs_natural reservoirSize_;
            mrs_natural preservoirSize_;
        mrs_natural pnChannels;
        
            mrs_natural ri_;
            long offset;

            mrs_natural advance_;
            mrs_natural cindex_;
  
            mrs_real duration_;
            mrs_natural csize_;
            mrs_natural size_;
            mrs_natural samplesOut_;
            std::string filename_;
            mrs_string debug_filename;
       
            mrs_real repetitions_;
  
        public:

            MP3FileSource(std::string name);
            MP3FileSource(const MP3FileSource& a);
            ~MP3FileSource();
            MarSystem* clone() const;  

            void myProcess(realvec& in, realvec& out);
            void getHeader(std::string filename);

  
    };

}//namespace Marsyas

#endif  

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