vorbisfile - vorbisfile_example.c

Vorbisfile documentation | vorbisfile version 1.2.0 - 20070723

# vorbisfile_example.c

The example program source:

    #include <stdio.h>
    #include <stdlib.h>
    #include <math.h>
    #include "vorbis/codec.h"
    #include "vorbis/vorbisfile.h"

    #ifdef _WIN32
    #include <io.h>
    #include <fcntl.h>
    #endif

    char pcmout[4096];

    int main(int argc, char **argv){
      OggVorbis_File vf;
      int eof=0;
      int current_section;

    #ifdef _WIN32
      _setmode( _fileno( stdin ), _O_BINARY );
      _setmode( _fileno( stdout ), _O_BINARY );
    #endif

      if(ov_open_callbacks(stdin, &vf, NULL, 0, OV_CALLBACKS_NOCLOSE) < 0) {
          fprintf(stderr,"Input does not appear to be an Ogg bitstream.\n");
          exit(1);
      }

      {
        char **ptr=ov_comment(&vf,-1)->user_comments;
        vorbis_info *vi=ov_info(&vf,-1);
        while(*ptr){
          fprintf(stderr,"%s\n",*ptr);
          ++ptr;
        }
        fprintf(stderr,"\nBitstream is %d channel, %ldHz\n",vi->channels,vi->rate);
        fprintf(stderr,"Encoded by: %s\n\n",ov_comment(&vf,-1)->vendor);
      }

      while(!eof){
        long ret=ov_read(&vf,pcmout,sizeof(pcmout),0,2,1,¤t_section);
        if (ret == 0) {
          /* EOF */
          eof=1;
        } else if (ret < 0) {
          /* error in the stream.  Not a problem, just reporting it in
    	 case we (the app) cares.  In this case, we don't. */
        } else {
          /* we don't bother dealing with sample rate changes, etc, but
    	 you'll have to */
          fwrite(pcmout,1,ret,stdout);
        }
      }

      ov_clear(&vf);

      fprintf(stderr,"Done.\n");
      return(0);
    }

copyright © 2007 Xiph.org | Ogg Vorbis team@vorbis.org
Vorbisfile documentation | vorbisfile version 1.2.0 - 20070723