vorbis/doc/vorbisfile/vorbisfile_example_c.html

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   4 <title>vorbisfile - vorbisfile_example.c</title>
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  11 <td><p class=tiny>Vorbisfile documentation</p></td>
  12 <td align=right><p class=tiny>vorbisfile version 1.3.2 - 20101101</p></td>
  13 </tr>
  14 </table>
  15
  16 <h1>vorbisfile_example.c</h1>
  17
  18 <p>
  19 The example program source:
  20
  21 <br><br>
  22 <table border=0 width=100% color=black cellspacing=0 cellpadding=7>
  23 <tr bgcolor=#cccccc>
  24         <td>
  25 <pre><b>
  26 #include &lt;stdio.h&gt;
  27 #include &lt;stdlib.h&gt;
  28 #include &lt;math.h&gt;
  29 #include "vorbis/codec.h"
  30 #include "vorbis/vorbisfile.h"
  31
  32 #ifdef _WIN32
  33 #include &lt;io.h&gt;
  34 #include &lt;fcntl.h&gt;
  35 #endif
  36
  37 char pcmout[4096];
  38
  39 int main(int argc, char **argv){
  40   OggVorbis_File vf;
  41   int eof=0;
  42   int current_section;
  43
  44 #ifdef _WIN32
  45   _setmode( _fileno( stdin ), _O_BINARY );
  46   _setmode( _fileno( stdout ), _O_BINARY );
  47 #endif
  48
  49   if(ov_open_callbacks(stdin, &amp;vf, NULL, 0, OV_CALLBACKS_NOCLOSE) &lt; 0) {
  50       fprintf(stderr,"Input does not appear to be an Ogg bitstream.\n");
  51       exit(1);
  52   }
  53
  54   {
  55     char **ptr=ov_comment(&amp;vf,-1)-&gt;user_comments;
  56     vorbis_info *vi=ov_info(&amp;vf,-1);
  57     while(*ptr){
  58       fprintf(stderr,"%s\n",*ptr);
  59       ++ptr;
  60     }
  61     fprintf(stderr,"\nBitstream is %d channel, %ldHz\n",vi-&gt;channels,vi-&gt;rate);
  62     fprintf(stderr,"Encoded by: %s\n\n",ov_comment(&amp;vf,-1)-&gt;vendor);
  63   }
  64
  65   while(!eof){
  66     long ret=ov_read(&amp;vf,pcmout,sizeof(pcmout),0,2,1,&amp;current_section);
  67     if (ret == 0) {
  68       /* EOF */
  69       eof=1;
  70     } else if (ret &lt; 0) {
  71       /* error in the stream.  Not a problem, just reporting it in
  72          case we (the app) cares.  In this case, we don't. */
  73     } else {
  74       /* we don't bother dealing with sample rate changes, etc, but
  75          you'll have to */
  76       fwrite(pcmout,1,ret,stdout);
  77     }
  78   }
  79
  80   ov_clear(&amp;vf);
  81
  82   fprintf(stderr,"Done.\n");
  83   return(0);
  84 }
  85
  86 </b></pre>
  87         </td>
  88 </tr>
  89 </table>
  90
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  92 <br><br>
  93 <hr noshade>
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  95 <tr valign=top>
  96 <td><p class=tiny>copyright &copy; 2000-2010 Xiph.Org</p></td>
  97 <td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/index.html">Ogg Vorbis</a></p></td>
  98 </tr><tr>
  99 <td><p class=tiny>Vorbisfile documentation</p></td>
 100 <td align=right><p class=tiny>vorbisfile version 1.3.2 - 20101101</p></td>
 101 </tr>
 102 </table>
 103
 104 </body>
 105
 106 </html>