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chaining_example.c    73 lines (60 with data), 2.7 kB

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/********************************************************************
* *
* THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 *
* by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
function: illustrate simple use of chained bitstream and vorbisfile.a
last mod: $Id$
********************************************************************/
#include <stdlib.h>
#include <vorbis/codec.h>
#include <vorbis/vorbisfile.h>
#ifdef _WIN32 /* We need the following two to set stdin/stdout to binary */
#include <io.h>
#include <fcntl.h>
#endif
int main(){
OggVorbis_File ov;
int i;
#ifdef _WIN32 /* We need to set stdin to binary mode. Damn windows. */
/* Beware the evil ifdef. We avoid these where we can, but this one we
cannot. Don't add any more, you'll probably go to hell if you do. */
_setmode( _fileno( stdin ), _O_BINARY );
#endif
/* open the file/pipe on stdin */
if(ov_open_callbacks(stdin,&ov,NULL,-1,OV_CALLBACKS_NOCLOSE)<0){
printf("Could not open input as an OggVorbis file.\n\n");
exit(1);
}
/* print details about each logical bitstream in the input */
if(ov_seekable(&ov)){
printf("Input bitstream contained %ld logical bitstream section(s).\n",
ov_streams(&ov));
printf("Total bitstream samples: %ld\n\n",
(long)ov_pcm_total(&ov,-1));
printf("Total bitstream playing time: %ld seconds\n\n",
(long)ov_time_total(&ov,-1));
}else{
printf("Standard input was not seekable.\n"
"First logical bitstream information:\n\n");
}
for(i=0;i<ov_streams(&ov);i++){
vorbis_info *vi=ov_info(&ov,i);
printf("\tlogical bitstream section %d information:\n",i+1);
printf("\t\t%ldHz %d channels bitrate %ldkbps serial number=%ld\n",
vi->rate,vi->channels,ov_bitrate(&ov,i)/1000,
ov_serialnumber(&ov,i));
printf("\t\theader length: %ld bytes\n",(long)
(ov.dataoffsets[i]-ov.offsets[i]));
printf("\t\tcompressed length: %ld bytes\n",(long)(ov_raw_total(&ov,i)));
printf("\t\tplay time: %lds\n",(long)ov_time_total(&ov,i));
}
ov_clear(&ov);
return 0;
}