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); }