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| <title>libvorbisenc - Documentation</title> |
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| <td><p class=tiny>libvorbisenc documentation</p></td> |
| <td align=right><p class=tiny>libvorbisenc release 1.1 - 20040709</p></td> |
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| <h1>Libvorbisenc API changes 1.0 through 1.1</h1> |
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| 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 © 2000-2004 vorbis team</p></td> |
| <td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/">Ogg Vorbis</a><br><a href="mailto:team@vorbis.org">team@vorbis.org</a></p></td> |
| </tr><tr> |
| <td><p class=tiny>libvorbisenc documentation</p></td> |
| <td align=right><p class=tiny>libvorbisenc release 1.1 - 20040709</p></td> |
| </tr> |
| </table> |
| |
| </body> |
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| </html> |
