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<html>
<head>
<title>libvorbisenc - Documentation</title>
<link rel=stylesheet href="style.css" type="text/css">
</head>
<body bgcolor=white text=black link="#5555ff" alink="#5555ff" vlink="#5555ff">
<table border=0 width=100%>
<tr>
<td><p class=tiny>libvorbisenc documentation</p></td>
<td align=right><p class=tiny>libvorbisenc version 1.3.2 - 20101101</p></td>
</tr>
</table>
<h1>Libvorbisenc API changes 1.0 through 1.1</h1>
This document describes API additions to libvorbisenc between release
1.0 and 1.1.
<h2>1.0.1</h2>
The programming API and binary application ABI are unchanged and fully
forward/backward compatible between release 1.0 and 1.0.1. Libvorbis,
libvorbisenc and libvorbisfile must match versions amongst themselves,
however.
<h2>1.1</h2>
The binary ABI from release 1.0.1 to 1.1 is backward compatible;
applications linked against libvorbis/libvorbisenc 1.0 and 1.0.1 will
continue to function correctly when upgrading the libvorbis and
libvorbisenc dynamic libraries without re-linking. <p>
Release 1.1 adds several possible requests to the libvorbisenc <a
href="vorbis_encode_ctl.html">vorbis_encode_ctl()</a> call in order to
reflect the shift to <a href="overview.html#BBR">bit-reservoir style
bitrate management</a>. In addition, several <a
href="vorbis_encode_ctl.html">vorbis_encode_ctl()</a> requests are
deprecated (but functional) as they are redered semantically obsolete
by the <a href="overview.html#BBR">new bitrate management</a>.<p>
<h3>Deprecated in 1.1</h3>
These calls are still available to older codebases to preserve
compatability; the fields of the <a
href="ovectl_ratemanage_arg.html">ovectl_ratemanage_arg</a> argument
are mapped as closely as possible to the fields of the new <a
href="ovectl_ratemanage2_arg.html">ovectl_ratemanage2_arg</a>
structure.
<dl>
<dt><a href="vorbis_encode_ctl.html#OV_ECTL_RATEMANAGE_GET">OV_ECTL_RATEMANAGE_GET</a>:<dd> Use <a
href="vorbis_encode_ctl.html#OV_ECTL_RATEMANAGE2_GET">OV_ECTL_RATEMANAGE2_GET</a>
instead.
<dt><a href="vorbis_encode_ctl.html#OV_ECTL_RATEMANAGE_SET">OV_ECTL_RATEMANAGE_SET</a>:<dd> Use <a
href="vorbis_encode_ctl.html#OV_ECTL_RATEMANAGE2_SET">OV_ECTL_RATEMANAGE2_SET</a>
instead.
<dt><a href="vorbis_encode_ctl.html#OV_ECTL_RATEMANAGE_AVG">OV_ECTL_RATEMANAGE_AVG</a>:<dd> Use <a
href="vorbis_encode_ctl.html#OV_ECTL_RATEMANAGE2_SET">OV_ECTL_RATEMANAGE2_SET</a>
instead.
<dt><a href="vorbis_encode_ctl.html#OV_ECTL_RATEMANAGE_HARD">OV_ECTL_RATEMANAGE_HARD</a>:<dd> Use <a
href="vorbis_encode_ctl.html#OV_ECTL_RATEMANAGE2_SET">OV_ECTL_RATEMANAGE2_SET</a>
instead.
</dl>
<h3>Newly added in 1.1</h3>
The following calls are added in 1.1 to semantically reflect movement
to a <a href="overview.html#BBR">bit-reservoir-based bitrate
management</a> scheme by introducing the <a
href="ovectl_ratemanage2_arg.html">ovectl_ratemanage2_arg</a>
structure in order to better represent the abilities of the bitrate
manager.<p>
<dl>
<dt><a href="vorbis_encode_ctl.html#OV_ECTL_RATEMANAGE2_GET">OV_ECTL_RATEMANAGE2_GET</a><dd>
Used to query the current state of bitrate management setup.
<dt><a href="vorbis_encode_ctl.html#OV_ECTL_RATEMANAGE2_SET">OV_ECTL_RATEMANAGE2_SET</a><dd>
Used to set or alter bitrate management settings.
</dl>
<br><br>
<hr noshade>
<table border=0 width=100%>
<tr valign=top>
<td><p class=tiny>copyright © 2000-2010 Xiph.Org</p></td>
<td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/">Ogg Vorbis</a></p></td>
</tr><tr>
<td><p class=tiny>libvorbisenc documentation</p></td>
<td align=right><p class=tiny>libvorbisenc version 1.3.2 - 20101101</p></td>
</tr>
</table>
</body>
</html>
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