| [16] | 1 | <html> |
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| 2 | |
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| 3 | <head> |
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| 4 | <title>Vorbisfile - function - ov_bitrate</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>ov_bitrate</h1> |
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| 17 | |
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| 18 | <p><i>declared in "vorbis/vorbisfile.h";</i></p> |
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| 19 | |
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| 20 | <p>This function returns the average bitrate for the specified logical bitstream. This may be different from the <a href=ov_info.html>ov_info->nominal_bitrate</a> value, as it is based on the actual average for this bitstream if the file is seekable. |
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| 21 | <p>Nonseekable files will return the nominal bitrate setting or the average of the upper and lower bounds, if any of these values are set. |
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| 22 | <p> |
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| 23 | |
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| 24 | <br><br> |
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| 25 | <table border=0 color=black cellspacing=0 cellpadding=7> |
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| 26 | <tr bgcolor=#cccccc> |
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| 27 | <td> |
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| 28 | <pre><b> |
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| 29 | long ov_bitrate(OggVorbis_File *vf,int i); |
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| 30 | </b></pre> |
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| 31 | </td> |
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| 32 | </tr> |
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| 33 | </table> |
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| 34 | |
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| 35 | <h3>Parameters</h3> |
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| 36 | <dl> |
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| 37 | <dt><i>vf</i></dt> |
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| 38 | <dd>A pointer to the OggVorbis_File structure--this is used for ALL the externally visible libvorbisfile |
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| 39 | functions.</dd> |
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| 40 | <dt><i>i</i></dt> |
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| 41 | <dd>Link to the desired logical bitstream. For nonseekable files, this argument is ignored. To retrieve the bitrate for the entire bitstream, this parameter should be set to -1.</dd> |
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| 42 | </dl> |
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| 43 | |
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| 44 | |
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| 45 | <h3>Return Values</h3> |
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| 46 | <blockquote> |
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| 47 | <li>OV_EINVAL indicates that an invalid argument value was submitted or that the stream represented by <tt>vf</tt> is not open.</li> |
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| 48 | <li>OV_FALSE means the call returned a 'false' status, which in this case most likely indicates that the file is nonseekable and the upper, lower, and nominal bitrates were unset. |
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| 49 | <li><i>n</i> indicates the bitrate for the given logical bitstream or the entire |
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| 50 | physical bitstream. If the file is open for random (seekable) access, it will |
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| 51 | find the *actual* average bitrate. If the file is streaming (nonseekable), it |
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| 52 | returns the nominal bitrate (if set) or else the average of the |
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| 53 | upper/lower bounds (if set).</li> |
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| 54 | </blockquote> |
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| 55 | <p> |
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| 56 | |
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| 57 | |
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| 58 | <br><br> |
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| 59 | <hr noshade> |
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| 60 | <table border=0 width=100%> |
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| 61 | <tr valign=top> |
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| 62 | <td><p class=tiny>copyright © 2007 Xiph.org</p></td> |
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| 63 | <td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/">Ogg Vorbis</a></p></td> |
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| 64 | </tr><tr> |
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| 65 | <td><p class=tiny>Vorbisfile documentation</p></td> |
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| 66 | <td align=right><p class=tiny>vorbisfile version 1.2.0 - 20070723</p></td> |
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| 67 | </tr> |
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| 68 | </table> |
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| 69 | |
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| 70 | </body> |
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| 71 | |
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| 72 | </html> |
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