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Bring in flac, ogg, vorbis
author Chris Cannam
date Tue, 19 Mar 2013 17:37:49 +0000
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1 <html>
2
3 <head>
4 <title>vorbis - datatype - ovectl_ratemanage_arg</title>
5 <link rel=stylesheet href="style.css" type="text/css">
6 </head>
7
8 <body bgcolor=white text=black link="#5555ff" alink="#5555ff" vlink="#5555ff">
9 <table border=0 width=100%>
10 <tr>
11 <td><p class=tiny>libvorbisenc documentation</p></td>
12 <td align=right><p class=tiny>libvorbisenc version 1.3.2 - 20101101</p></td>
13 </tr>
14 </table>
15
16 <h1>ovectl_ratemanage_arg</h1>
17
18 <p><i>declared in "vorbis/vorbisenc.h"</i></p>
19
20 <p>
21
22 The ovectl_ratemanage_arg structure is used with <a
23 href="vorbis_encode_ctl.html">vorbis_encode_ctl()</a> and the OV_ECTL_RATEMANAGE_GET,
24 OV_ECTL_RATEMANAGE_SET, OV_ECTL_RATEMANAGE_AVG,
25 OV_ECTL_RATEMANAGE_HARD calls in order to query and modify specifics
26 of the encoder's bitrate management configuration. Note that this is
27 a deprecated interface; please use vorbis_encode_ctl() with the <a
28 href="ovectl_ratemanage2_arg.html">ovectl_ratemanage2_arg</a> struct
29 and OV_ECTL_RATEMANAGE2_GET and OV_ECTL_RATEMANAGE2_SET calls in new
30 code.
31
32 <p>
33
34 <table border=0 width=100% color=black cellspacing=0 cellpadding=7>
35 <tr bgcolor=#cccccc>
36 <td>
37 <pre><b>struct ovectl_ratemanage_arg {
38 int management_active;
39
40 long bitrate_hard_min;
41 long bitrate_hard_max;
42 double bitrate_hard_window;
43
44 long bitrate_av_lo;
45 long bitrate_av_hi;
46 double bitrate_av_window;
47 double bitrate_av_window_center;
48 };</b></pre>
49 </td>
50 </tr>
51 </table>
52
53 <h3>Relevant Struct Members</h3>
54 <dl>
55
56 <dt><i>management_active</i></dt>
57 <dd>nonzero if bitrate management is active</dd>
58
59 <dt><i>bitrate_hard_min</i></dt>
60 <dd>hard lower limit (in kilobits per second) below which the stream bitrate will never be allowed for any given bitrate_hard_window seconds of time.</dd>
61 <dt><i>bitrate_hard_max</i></dt>
62 <dd>hard upper limit (in kilobits per second) above which the stream bitrate will never be allowed for any given bitrate_hard_window seconds of time.</dd>
63 <dt><i>bitrate_hard_window</i></dt>
64 <dd>the window period (in seconds) used to regulate the hard bitrate minimum and maximum</dd>
65
66 <dt><i>bitrate_av_lo</i></dt>
67 <dd>soft lower limit (in kilobits per second) below which the average bitrate tracker will start nudging the bitrate higher.</dd>
68 <dt><i>bitrate_av_hi</i></dt>
69 <dd>soft upper limit (in kilobits per second) above which the average bitrate tracker will start nudging the bitrate lower.</dd>
70 <dt><i>bitrate_av_window</i></dt>
71 <dd>the window period (in seconds) used to regulate the average bitrate minimum and maximum.</dd>
72 <dt><i>bitrate_av_window_center</i></dt>
73 <dd>Regulates the relative centering of the average and hard windows; in libvorbis 1.0 and 1.0.1, the hard window regulation overlapped but followed the average window regulation. In libvorbis 1.1 a bit-reservoir interface replaces the old windowing interface; the older windowing interface is simulated and this field has no effect.</dd>
74
75 </dl>
76
77
78 <br><br>
79 <hr noshade>
80 <table border=0 width=100%>
81 <tr valign=top>
82 <td><p class=tiny>copyright &copy; 2000-2010 Xiph.Org</p></td>
83 <td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/index.html">Ogg Vorbis</a></p></td>
84 </tr><tr>
85 <td><p class=tiny>libvorbisenc documentation</p></td>
86 <td align=right><p class=tiny>libvorbisenc version 1.3.2 - 20101101</p></td>
87 </tr>
88 </table>
89
90 </body>
91
92 </html>