ogg2/doc/ogg/vorbis_info.html

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   4 <title>Vorbisfile - datatype - vorbis_info</title>
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  11 <td><p class=tiny>Vorbisfile documentation</p></td>
  12 <td align=right><p class=tiny>libVorbisfile version 1.65 - 20020702</p></td>
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  14 </table>
  15
  16 <h1>vorbis_info</h1>
  17
  18 <p><i>declared in "vorbis/codec.h"</i></p>
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  20 <p>
  21 The vorbis_info structure contains basic information about the audio in a vorbis bitstream.
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  27 <pre><b>typedef struct vorbis_info{
  28   int version;
  29   int channels;
  30   long rate;
  31
  32   long bitrate_upper;
  33   long bitrate_nominal;
  34   long bitrate_lower;
  35   long bitrate_window;
  36
  37   void *codec_setup;
  38
  39 } vorbis_info;</b></pre>
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  44 <h3>Relevant Struct Members</h3>
  45 <dl>
  46 <dt><i>version</i></dt>
  47 <dd>Vorbis encoder version used to create this bitstream.</dd>
  48 <dt><i>channels</i></dt>
  49 <dd>Int signifying number of channels in bitstream.</dd>
  50 <dt><i>rate</i></dt>
  51 <dd>Sampling rate of the bitstream.</dd>
  52 <dt><i>bitrate_upper</i></dt>
  53 <dd>Specifies the upper limit in a VBR bitstream.  If the value matches the bitrate_nominal and bitrate_lower parameters, the stream is fixed bitrate.  May be unset if no limit exists.</dd>
  54 <dt><i>bitrate_nominal</i></dt>
  55 <dd>Specifies the average bitrate for a VBR bitstream.  May be unset.  If the bitrate_upper and bitrate_lower parameters match, the stream is fixed bitrate.</dd>
  56 <dt><i>bitrate_lower</i></dt>
  57 <dd>Specifies the lower limit in a VBR bitstream.  If the value matches the bitrate_nominal and bitrate_upper parameters, the stream is fixed bitrate.  May be unset if no limit exists.</dd>
  58 <dt><i>bitrate_window</i></dt>
  59 <dd>Currently unset.</dd>
  60
  61 <dt><i>codec_setup</i></dt>
  62 <dd>Internal structure that contains the detailed/unpacked configuration for decoding the current Vorbis bitstream.</dd>
  63 </dl>
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  70 <td><p class=tiny>copyright &copy; 2002 Xiph.org</p></td>
  71 <td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/">Ogg Vorbis</a></p></td>
  72 </tr><tr>
  73 <td><p class=tiny>Vorbisfile documentation</p></td>
  74 <td align=right><p class=tiny>libVorbisfile version 1.65 - 20020702</p></td>
  75 </tr>
  76 </table>
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