diff -r e353ca78d28b -r f7e49eff3708 misc/libtremor/ivorbisfile_example.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/misc/libtremor/ivorbisfile_example.c Sun Apr 24 22:57:57 2011 +0200 @@ -0,0 +1,86 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis 'TREMOR' 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 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * + * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * + * * + ******************************************************************** + + function: simple example decoder using vorbisidec + + ********************************************************************/ + +/* Takes a vorbis bitstream from stdin and writes raw stereo PCM to + stdout using vorbisfile. Using vorbisfile is much simpler than + dealing with libvorbis. */ + +#include +#include +#include +#include + +#ifdef _WIN32 /* We need the following two to set stdin/stdout to binary */ +#include +#include +#endif + +char pcmout[4096]; /* take 4k out of the data segment, not the stack */ + +int main(){ + OggVorbis_File vf; + int eof=0; + int current_section; + +#ifdef _WIN32 /* We need to set stdin/stdout 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 ); + _setmode( _fileno( stdout ), _O_BINARY ); +#endif + + if(ov_open(stdin, &vf, NULL, 0) < 0) { + fprintf(stderr,"Input does not appear to be an Ogg bitstream.\n"); + exit(1); + } + + /* Throw the comments plus a few lines about the bitstream we're + decoding */ + { + 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,"\nDecoded length: %ld samples\n", + (long)ov_pcm_total(&vf,-1)); + fprintf(stderr,"Encoded by: %s\n\n",ov_comment(&vf,-1)->vendor); + } + + while(!eof){ + long ret=ov_read(&vf,pcmout,sizeof(pcmout),¤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); + } + } + + /* cleanup */ + ov_clear(&vf); + + fprintf(stderr,"Done.\n"); + return(0); +}