summaryrefslogtreecommitdiffhomepage
path: root/contrib/vorbis/doc/libvorbis/vorbis_comment_query.html
blob: f958ebb60a57bf124b747bf60ac2461329105921 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
<html>

<head>
<title>libvorbis - function - vorbis_comment_query</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>libvorbis documentation</p></td>
<td align=right><p class=tiny>libvorbis version 1.3.2 - 20101101</p></td>
</tr>
</table>

<h1>vorbis_comment_query</h1>

<p><i>declared in "vorbis/codec.h";</i></p>

<p>This function retrieves a comment string for a given tag in a
<a href="vorbis_comment.html">vorbis_comment</a> structure.</p>

<table border=0 color=black cellspacing=0 cellpadding=7>
<tr bgcolor=#cccccc>
	<td>
<pre><b>
extern char    *vorbis_comment_query(vorbis_comment *vc, const char *tag, int count);
</b></pre>
	</td>
</tr>
</table>

<h3>Parameters</h3>
<dl>
<dt><i>vc</i></dt>
<dd>Pointer to the vorbis_comment structure.</dd>
<dt><i>tag</i></dt>
<dd>Pointer to a null-terminated string of the comment tag to look
for. Tags are compared case-insensitively.</dd>
<dt><i>count</i></dt>
<dd>The index of the comment string to retrieve. A value of 0 indicates
the first comment whose tag matches <i>tag</i>. Use
<a href="vorbis_comment_query_count.html">vorbis_comment_query_count</a>
to determine the number of matching comments.</dd>
</dl>


<h3>Return Values</h3>
<blockquote>
<li>A pointer to the comment string. The underlying buffer is owned by
the vorbis_comment structure.</li>
<li>NULL on a nonexistent tag or if <i>count</i> is greater than or
equal to the number of matching comments.</li>
</blockquote>
<p>

<br><br>
<hr noshade>
<table border=0 width=100%>
<tr valign=top>
<td><p class=tiny>copyright &copy; 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>libvorbis documentation</p></td>
<td align=right><p class=tiny>libvorbis version 1.3.2 - 20101101</p></td>
</tr>
</table>


</body>

</html>