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72 lines
2.4 KiB
72 lines
2.4 KiB
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<title>Tremor - function - ov_bitrate</title>
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<link rel=stylesheet href="style.css" type="text/css">
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<body bgcolor=white text=black link="#5555ff" alink="#5555ff" vlink="#5555ff">
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<table border=0 width=100%>
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<td><p class=tiny>Tremor documentation</p></td>
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<td align=right><p class=tiny>Tremor version 1.0 - 20020403</p></td>
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</table>
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<h1>ov_bitrate</h1>
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<p><i>declared in "ivorbisfile.h";</i></p>
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<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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<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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<p>
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<br><br>
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<table border=0 color=black cellspacing=0 cellpadding=7>
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<tr bgcolor=#cccccc>
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<td>
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<pre><b>
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long ov_bitrate(OggVorbis_File *vf,int i);
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</b></pre>
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</td>
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</tr>
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</table>
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<h3>Parameters</h3>
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<dl>
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<dt><i>vf</i></dt>
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<dd>A pointer to the OggVorbis_File structure--this is used for ALL the externally visible libvorbisidec
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functions.</dd>
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<dt><i>i</i></dt>
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<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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</dl>
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<h3>Return Values</h3>
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<blockquote>
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<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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<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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<li><i>n</i> indicates the bitrate for the given logical bitstream or the entire
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physical bitstream. If the file is open for random (seekable) access, it will
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find the *actual* average bitrate. If the file is streaming (nonseekable), it
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returns the nominal bitrate (if set) or else the average of the
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upper/lower bounds (if set).</li>
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</blockquote>
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<p>
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<br><br>
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<hr noshade>
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<table border=0 width=100%>
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<tr valign=top>
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<td><p class=tiny>copyright © 2002 Xiph.org</p></td>
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<td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/">Ogg Vorbis</a></p></td>
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</tr><tr>
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<td><p class=tiny>Tremor documentation</p></td>
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<td align=right><p class=tiny>Tremor version 1.0 - 20020403</p></td>
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</tr>
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</table>
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</body>
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</html>
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