Merge commit '74f4b1bc3b627ba4c7e03498234d88cacdfbe97b' as 'vorbis'

author: Aki <please@ignore.pl> 2021-09-29 22:52:49 +0200
committer: Aki <please@ignore.pl> 2021-09-29 22:52:49 +0200
commit: 760f65d35df281b04d99843958623d99ab35dcaf (patch)
tree: 76f6f05695822256bbf8097fa0aa6b5d2a34369b /vorbis/doc/vorbisenc/vorbis_encode_ctl.html
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parent: 74f4b1bc3b627ba4c7e03498234d88cacdfbe97b (diff)
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+<html>
+
+<head>
+<title>libvorbisenc - function - vorbis_encode_ctl</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>vorbis_encode_ctl</h1>
+
+<p><i>declared in "vorbis/vorbisenc.h";</i></p>
+
+<p>This function implements a generic interface to miscellaneous
+encoder settings similar to the clasasic UNIX 'ioctl()' system call.
+Applications may use vorbis_encode_ctl() to query or set bitrate
+management or quality mode details by using one of several
+<i>request</i> arguments detailed below.  Vorbis_encode_ctl() must be
+called after one of <a
+href="vorbis_encode_setup_managed.html">vorbis_encode_setup_managed()</a>
+or <a
+href="vorbis_encode_setup_vbr.html">vorbis_encode_setup_vbr()</a>.
+When used to modify settings, vorbis_encode_ctl() must be called
+before <a
+href="vorbis_encode_setup_init.html">vorbis_encode_setup_init()</a>.
+
+<p>
+<br><br>
+<table border=0 color=black cellspacing=0 cellpadding=7>
+<tr bgcolor=#cccccc>
+	<td>
+<pre><b>
+extern int vorbis_encode_ctl(vorbis_info *vi,int request,void *arg);
+
+</b></pre>
+	</td>
+</tr>
+</table>
+
+<h3>Parameters</h3>
+<dl>
+<dt><i>vi</i></dt>
+<dd>Pointer to an initialized <a href="../libvorbis/vorbis_info.html">vorbis_info</a> struct.</dd><p>
+<dt><i>request</i></dt>
+<dd>Specifies the desired action; possible request fields are detailed below.</dd><p>
+<dt><i>arg</i></dt>
+<dd>void * pointing to a data structure matching the request argument.</dd><p>
+</dl><p>
+
+<h3>Requests</h3>
+<dl>
+
+<dt><i>OV_ECTL_RATEMANAGE2_GET</i></dt>
+
+<dd><b>Argument: <a href="ovectl_ratemanage2_arg.html">struct
+ovectl_ratemanage2_arg *</a></b><br> Used to query the current
+encoder bitrate management setting.  Also used to initialize fields of
+an ovectl_ratemanage2_arg structure for use with
+OV_ECTL_RATEMANAGE2_SET.</dd><p>
+
+<dt><i>OV_ECTL_RATEMANAGE2_SET</i></dt>
+<dd><b>Argument: <a href="ovectl_ratemanage2_arg.html">struct
+ovectl_ratemanage2_arg *</a></b><br> Used to set the current
+encoder bitrate management settings to the values listed in the
+ovectl_ratemanage2_arg.  Passing a NULL pointer will disable bitrate
+management.
+</dd><p>
+
+<dt><i>OV_ECTL_LOWPASS_GET</i></dt>
+<dd><b>Argument: double *</b><br> Returns the current encoder hard-lowpass
+setting (kHz) in the double pointed to by arg.
+</dd><p>
+
+<dt><i>OV_ECTL_LOWPASS_SET</i></dt>
+<dd><b>Argument: double *</b><br> Sets the encoder hard-lowpass to the value
+(kHz) pointed to by arg. Valid lowpass settings range from 2 to 99.
+</dd><p>
+
+<dt><i>OV_ECTL_IBLOCK_GET</i></dt>
+<dd><b>Argument: double *</b><br> Returns the current encoder impulse
+block setting in the double pointed to by arg.</dd><p>
+
+<dt><i>OV_ECTL_IBLOCK_SET</i></dt> <dd><b>Argument: double *</b><br> Sets
+the impulse block bias to the the value pointed to by arg; valid range
+is -15.0 to 0.0 [default].  A negative impulse block bias will direct
+to encoder to use more bits when incoding short blocks that contain
+strong impulses, thus improving the accuracy of impulse encoding.</dd><p>
+
+<dt><i>OV_ECTL_COUPLING_GET</i></dt>
+<dd><b>Argument: int *</b><br>
+Returns the current encoder coupling enabled/disabled 
+setting in the int pointed to by arg.
+</dd><p>
+
+<dt><i>OV_ECTL_COUPLING_SET</i></dt> 
+<dd><b>Argument: int *</b><br>
+Enables/disables channel coupling in multichannel encoding according to arg.
+*arg of zero disables all channel coupling, nonzero allows the encoder to use
+coupling if a coupled mode is available for the input.  At present, coupling 
+is available for stereo and 5.1 input modes.
+</dd><p>
+
+<dt><i>OV_ECTL_RATEMANAGE_GET [deprecated]</i></dt>
+<dd>
+
+<b>Argument: <a href="ovectl_ratemanage_arg.html">struct
+ovectl_ratemanage_arg *</a></b><br> Old interface to querying bitrate
+management settings; deprecated after move to bit-reservoir style
+management in 1.1 rendered this interface partially obsolete.  Please
+use OV_ECTL_RATEMANGE2_GET instead.
+
+</dd><p>
+
+<dt><i>OV_ECTL_RATEMANAGE_SET [deprecated]</i></dt>
+<dd>
+<b>Argument: <a href="ovectl_ratemanage_arg.html">struct
+ovectl_ratemanage_arg *</a></b><br> Old interface to modifying bitrate
+management settings; deprecated after move to bit-reservoir style
+management in 1.1 rendered this interface partially obsolete.  Please
+use OV_ECTL_RATEMANGE2_SET instead.
+</dd><p>
+
+<dt><i>OV_ECTL_RATEMANAGE_AVG [deprecated]</i></dt>
+<dd>
+<b>Argument: <a href="ovectl_ratemanage_arg.html">struct
+ovectl_ratemanage_arg *</a></b><br> Old interface to setting
+average-bitrate encoding mode; deprecated after move to bit-reservoir
+style management in 1.1 rendered this interface partially obsolete.
+Please use OV_ECTL_RATEMANGE2_SET instead.  
+</dd><p>
+
+<dt><i>OV_ECTL_RATEMANAGE_HARD [deprecated]</i></dt>
+<dd>
+<b>Argument: <a href="ovectl_ratemanage_arg.html">struct
+ovectl_ratemanage_arg *</a></b><br> Old interface to setting
+bounded-bitrate encoding modes; deprecated after move to bit-reservoir
+style management in 1.1 rendered this interface partially obsolete.
+Please use OV_ECTL_RATEMANGE2_SET instead.  
+</dd><p>
+
+
+</dl>
+
+
+<h3>Return Values</h3> vorbis_encode_ctl() returns zero on success,
+placing any further return information (such as the result of a query)
+into the storage pointed to by <i>*arg</i>.  On error,
+vorbis_encode_ctl() may return one of the following error codes:
+
+<dl>
+
+<dt>OV_EINVAL</dt><dd>Invalid argument, or an attempt to modify a
+setting after calling <a
+href="vorbis_encode_setup_init.html">vorbis_encode_setup_init()</a>.</dd><p>
+
+<dt>OV_EIMPL</dt><dd>Unimplemented or unknown request</dd><p>
+
+</dl>
+
+<p>
+
+<br><br>
+<hr noshade>
+<table border=0 width=100%>
+<tr valign=top>
+<td><p class=tiny>copyright &copy; 2000-2010 Xiph.Org</p></td>
+<td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/index.html">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>
author	Aki <please@ignore.pl>	2021-09-29 22:52:49 +0200
committer	Aki <please@ignore.pl>	2021-09-29 22:52:49 +0200
commit	760f65d35df281b04d99843958623d99ab35dcaf (patch)
tree	76f6f05695822256bbf8097fa0aa6b5d2a34369b /vorbis/doc/vorbisenc/vorbis_encode_ctl.html
parent	bdb934044a10bcccdea4ae5e9b067a2e764e0e7f (diff)
parent	74f4b1bc3b627ba4c7e03498234d88cacdfbe97b (diff)
download	starshatter-760f65d35df281b04d99843958623d99ab35dcaf.zip starshatter-760f65d35df281b04d99843958623d99ab35dcaf.tar.gz starshatter-760f65d35df281b04d99843958623d99ab35dcaf.tar.bz2