Marsyas  0.6.0-alpha
/usr/src/RPM/BUILD/marsyas-0.6.0/src/marsyas/marsystems/MP3FileSource.h
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00001 /*
00002 ** Copyright (C) 1998-2010 George Tzanetakis <gtzan@cs.cmu.edu>
00003 **
00004 ** This program is free software; you can redistribute it and/or modify
00005 ** it under the terms of the GNU General Public License as published by
00006 ** the Free Software Foundation; either version 2 of the License, or
00007 ** (at your option) any later version.
00008 **
00009 ** This program is distributed in the hope that it will be useful,
00010 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 ** GNU General Public License for more details.
00013 **
00014 ** You should have received a copy of the GNU General Public License
00015 ** along with this program; if not, write to the Free Software
00016 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017 */
00018 
00019 #ifndef MARSYAS_MP3SOURCE_H
00020 #define MARSYAS_MP3SOURCE_H
00021 
00022 #include <cstdio>
00023 
00024 #ifndef WIN32
00025 #include <sys/stat.h>
00026 #include <sys/types.h>
00027 #include <sys/mman.h>
00028 #include <fcntl.h>
00029 #endif
00030 
00031 #include <marsyas/common_header.h>
00032 #include "AbsSoundFileSource.h"
00033 
00034 extern "C" {
00035 #include "mad.h"
00036 }
00037 
00038 namespace Marsyas
00039 {
00052 class MP3FileSource: public AbsSoundFileSource
00053 {
00054 private:
00055   MarControlPtr ctrl_pos_;
00056   void addControls();
00057   void myUpdate(MarControlPtr sender);
00058   mrs_natural getLinear16(realvec& slice);
00059 
00060   // MAD stuff
00061   inline signed int scale(mad_fixed_t sample);
00062   void madStructInitialize();
00063   void madStructFinish();
00064 
00065   void fillStream( long offset = 0 );
00066   void closeFile();
00067 
00068   void  PrintFrameInfo(struct mad_header *Header);
00069 
00070   // MAD stuff
00071   struct mad_stream stream;
00072   struct mad_frame frame;
00073   struct mad_synth synth;
00074 
00075   mrs_natural fileSize_;
00076   mrs_natural frameSamples_;
00077   mrs_natural totalFrames_;
00078   mrs_natural frameCount_;
00079   unsigned char* ptr_;
00080   int fd;
00081   FILE* fp;
00082   struct stat myStat;
00083 
00084   // variables for buffer balancing
00085   int bufferSize_;
00086   mrs_natural currentPos_;
00087   realvec reservoir_;
00088   mrs_natural reservoirSize_;
00089   mrs_natural preservoirSize_;
00090   mrs_natural pnChannels;
00091 
00092   mrs_natural ri_;
00093   long offset;
00094 
00095   mrs_natural advance_;
00096   mrs_natural cindex_;
00097 
00098   mrs_real duration_;
00099   mrs_natural csize_;
00100   mrs_natural size_;
00101   mrs_natural samplesOut_;
00102   std::string filename_;
00103   mrs_string debug_filename;
00104 
00105   mrs_real repetitions_;
00106 
00107 public:
00108 
00109   MP3FileSource(std::string name);
00110   MP3FileSource(const MP3FileSource& a);
00111   ~MP3FileSource();
00112   MarSystem* clone() const;
00113 
00114   void myProcess(realvec& in, realvec& out);
00115   void getHeader(std::string filename);
00116 
00117 
00118 };
00119 
00120 }//namespace Marsyas
00121 
00122 #endif