Marsyas  0.6.0-alpha
/usr/src/RPM/BUILD/marsyas-0.6.0/src/marsyas/marsystems/WavFileSink.h
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00001 /*
00002 ** Copyright (C) 1998-2010 George Tzanetakis <gtzan@cs.uvic.ca>
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_WAVFILESINK_H
00020 #define MARSYAS_WAVFILESINK_H
00021 
00022 #include <marsyas/common_header.h>
00023 #include "SoundFileSink.h"
00024 #include "WavFileSource.h"
00025 #include <marsyas/FileName.h>
00026 #include "AbsSoundFileSink.h"
00027 
00028 namespace Marsyas
00029 {
00030 struct wavhdr {
00031   char riff[4];           // "RIFF"
00032   signed int file_size;      // in bytes
00033 
00034   char wave[4];           // "WAVE"
00035 
00036   char fmt[4];            // "fmt "
00037   signed int chunk_size;     // in bytes (16 for PCM)
00038   signed short format_tag;     // 1=PCM, 2=ADPCM, 3=IEEE float, 6=A-Law, 7=Mu-Law
00039   signed short num_chans;      // 1=mono, 2=stereo
00040   signed int sample_rate;
00041   signed int bytes_per_sec;
00042   signed short bytes_per_samp; // 2=16-bit mono, 4=16-bit stereo
00043   signed short bits_per_samp;
00044   char data[4];           // "data"
00045   signed int data_length;    // in bytes
00046 };
00047 
00052 class WavFileSink: public AbsSoundFileSink
00053 {
00054 private:
00055   wavhdr hdr_;
00056   unsigned long written_;
00057   long fpos_;
00058 
00059   short * sdata_;
00060   unsigned char *cdata_;
00061 
00062   std::string filename_;
00063   FILE *sfp_;
00064   long sfp_begin_;
00065   mrs_natural nChannels_;
00066 
00067   unsigned long ByteSwapLong(unsigned long nLongNumber);
00068   unsigned short ByteSwapShort (unsigned short nValue);
00069 
00070   void addControls();
00071   void myUpdate(MarControlPtr sender);
00072 
00073 public:
00074   WavFileSink(std::string name);
00075   ~WavFileSink();
00076   MarSystem* clone() const;
00077 
00078   void putLinear16Swap(realvec& slice);
00079   void putHeader(std::string filename);
00080   bool checkExtension(std::string filename);
00081   void myProcess(realvec& in, realvec& out);
00082 };
00083 
00084 }//namespace Marsyas
00085 
00086 #endif    /* !MARSYAS_WAVFILESINK_H */
00087 
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00091