1 <html> 2 3 <head> 4 <title>vorbis - datatype - vorbis_info</title> 5 <link rel=stylesheet href="style.css" type="text/css"> 6 </head> 7 8 <body bgcolor=white text=black link="#5555ff" alink="#5555ff" vlink="#5555ff"> 9 <table border=0 width=100%> 10 <tr> 11 <td><p class=tiny>libvorbisenc documentation</p></td> 12 <td align=right><p class=tiny>libvorbisenc release 1.1 - 20040709</p></td> 13 </tr> 14 </table> 15 16 <h1>vorbis_info</h1> 17 18 <p><i>declared in "vorbis/codec.h"</i></p> 19 20 <p> 21 The vorbis_info structure contains information about a vorbis bitstream. 22 23 <p> 24 25 <table border=0 width=100% color=black cellspacing=0 cellpadding=7> 26 <tr bgcolor=#cccccc> 27 <td> 28 <pre><b>typedef struct vorbis_info{ 29 int version; 30 int channels; 31 long rate; 32 33 long bitrate_upper; 34 long bitrate_nominal; 35 long bitrate_lower; 36 long bitrate_window; 37 38 void *codec_setup; 39 40 } vorbis_info;</b></pre> 41 </td> 42 </tr> 43 </table> 44 45 <h3>Relevant Struct Members</h3> 46 <dl> 47 <dt><i>version</i></dt> 48 <dd>Vorbis encoder version used to create this bitstream.</dd> 49 <dt><i>channels</i></dt> 50 <dd>Int signifying number of channels in bitstream.</dd> 51 <dt><i>rate</i></dt> 52 <dd>Sampling rate of the bitstream.</dd> 53 <dt><i>bitrate_upper</i></dt> 54 <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> 55 <dt><i>bitrate_nominal</i></dt> 56 <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> 57 <dt><i>bitrate_lower</i></dt> 58 <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> 59 <dt><i>bitrate_window</i></dt> 60 <dd>Specifies the size of the bit reservoir in seconds relative to the nominal bitrate. May be unset.</dd> 61 <dt><i>codec_setup</i></dt> 62 <dd>Pointer to private encoder setup state.</dd> 63 64 </dl> 65 66 67 <br><br> 68 <hr noshade> 69 <table border=0 width=100%> 70 <tr valign=top> 71 <td><p class=tiny>copyright © 2004 vorbis team</p></td> 72 <td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/index.html">Ogg Vorbis</a><br><a href="mailto:team (a] vorbis.org">team (a] vorbis.org</a></p></td> 73 </tr><tr> 74 <td><p class=tiny>vorbisfile documentation</p></td> 75 <td align=right><p class=tiny>libvorbisenc release 1.1 - 20040709</p></td> 76 </tr> 77 </table> 78 79 </body> 80 81 </html> 82
