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3 <head>
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4 <title>libvorbis - datatype - vorbis_info</title>
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5 <link rel=stylesheet href="style.css" type="text/css">
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6 </head>
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7
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8 <body bgcolor=white text=black link="#5555ff" alink="#5555ff" vlink="#5555ff">
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9 <table border=0 width=100%>
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10 <tr>
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11 <td><p class=tiny>libvorbis documentation</p></td>
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12 <td align=right><p class=tiny>libvorbis version 1.3.2 - 20101101</p></td>
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13 </tr>
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14 </table>
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15
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16 <h1>vorbis_info</h1>
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17
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18 <p><i>declared in "vorbis/codec.h"</i></p>
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19
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20 <p>
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21 The vorbis_info structure contains basic information about the audio in a vorbis bitstream.
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22 <p>
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23
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24 <table border=0 width=100% color=black cellspacing=0 cellpadding=7>
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25 <tr bgcolor=#cccccc>
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26 <td>
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27 <pre><b>typedef struct vorbis_info{
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28 int version;
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29 int channels;
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30 long rate;
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31
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32 long bitrate_upper;
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33 long bitrate_nominal;
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34 long bitrate_lower;
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35 long bitrate_window;
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36
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37 void *codec_setup;
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38
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39 } vorbis_info;</b></pre>
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40 </td>
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41 </tr>
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42 </table>
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43
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44 <h3>Relevant Struct Members</h3>
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45 <dl>
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46 <dt><i>version</i></dt>
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47 <dd>Vorbis encoder version used to create this bitstream.</dd>
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48 <dt><i>channels</i></dt>
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49 <dd>Int signifying number of channels in bitstream.</dd>
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50 <dt><i>rate</i></dt>
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51 <dd>Sampling rate of the bitstream.</dd>
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52 <dt><i>bitrate_upper</i></dt>
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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>
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54 <dt><i>bitrate_nominal</i></dt>
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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>
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56 <dt><i>bitrate_lower</i></dt>
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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>
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58 <dt><i>bitrate_window</i></dt>
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59 <dd>Currently unset.</dd>
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60
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61 <dt><i>codec_setup</i></dt>
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62 <dd>Internal structure that contains the detailed/unpacked configuration for decoding the current Vorbis bitstream.</dd>
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63 </dl>
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64
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65
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66 <br><br>
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67 <hr noshade>
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68 <table border=0 width=100%>
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69 <tr valign=top>
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70 <td><p class=tiny>copyright © 2000-2010 Xiph.Org</p></td>
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71 <td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/">Ogg Vorbis</a></p></td>
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72 </tr><tr>
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73 <td><p class=tiny>libvorbis documentation</p></td>
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74 <td align=right><p class=tiny>libvorbis version 1.3.2 - 20101101</p></td>
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75 </tr>
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76 </table>
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77
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78 </body>
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79
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80 </html>
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