| [16] | 1 | <html> |
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| 2 | |
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| 3 | <head> |
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| 4 | <title>Vorbisfile - 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>Vorbisfile documentation</p></td> |
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| 12 | <td align=right><p class=tiny>vorbisfile version 1.2.0 - 20070723</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 © 2007 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>Vorbisfile documentation</p></td> |
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| 74 | <td align=right><p class=tiny>vorbisfile version 1.2.0 - 20070723</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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