4 <title>libvorbisenc - function - vorbis_encode_init_vbr</title>
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11 <td><p class=tiny>libvorbisenc documentation</p></td>
12 <td align=right><p class=tiny>libvorbisenc release 1.1 - 20040709</p></td>
16 <h1>vorbis_encode_init_vbr</h1>
18 <p><i>declared in "vorbis/libvorbisenc.h";</i></p>
20 <p>This is the primary function within libvorbisenc for setting up variable bitrate ("quality" based) modes.
21 <p>Before this function is called, the <a href="vorbis_info.html">vorbis_info</a> struct should be initialized by using vorbis_info_init() from the libvorbis API. After encoding, vorbis_info_clear should be called.
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28 extern int vorbis_encode_init_vbr(<a href="vorbis_info.html">vorbis_info</a> *vi,
42 <dd>File pointer to an initialized <a href="vorbis_info.html">vorbis_info</a> struct.</dd>
43 <dt><i>channels</i></dt>
44 <dd>The number of channels to be encoded.</dd>
46 <dd>The sampling rate of the source audio.</dd>
47 <dt><i>base_quality</i></dt>
48 <dd>Desired quality level, currently from -0.1 to 1.0 (lo to hi).</dd>
52 <h3>Return Values</h3>
57 <li>less than zero for failure:</li>
59 <li>OV_EFAULT - Internal logic fault; indicates a bug or heap/stack corruption.</li>
60 <li>OV_EINVAL - Invalid setup request, eg, out of range argument. </li>
61 <li>OV_EIMPL - Unimplemented mode; unable to comply with quality level request.</li>
68 <table border=0 width=100%>
70 <td><p class=tiny>copyright © 2004 xiph.org</p></td>
71 <td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/index.html">Ogg Vorbis</a><br><a href="mailto:team@vorbis.org">team@vorbis.org</a></p></td>
73 <td><p class=tiny>libvorbisenc documentation</p></td>
74 <td align=right><p class=tiny>libvorbisenc release 1.1 - 20040709</p></td>