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1<html>
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3<head>
4<title>libogg - function - ogg_sync_pageout</title>
5<link rel=stylesheet href="style.css" type="text/css">
6</head>
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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>libogg documentation</p></td>
12<td align=right><p class=tiny>libogg release 1.0 - 20000615</p></td>
13</tr>
14</table>
15
16<h1>ogg_sync_pageout</h1>
17
18<p><i>declared in "ogg/ogg.h";</i></p>
19
20<p>This function takes the data stored in the buffer of the <a href="ogg_sync_state.html">ogg_sync_state</a> struct and inserts them into an <a href="ogg_page.html">ogg_page</a>.
21
22<p>In an actual decoding loop, this function should be called first to ensure that the buffer is cleared.  The example code below illustrates a clean reading loop which will fill and output pages.
23<p><b>Caution:</b>This function should be called before reading into the buffer to ensure that data does not remain in the ogg_sync_state struct.  Failing to do so may result in a memory leak.  See the example code below for details.
24
25<br><br>
26<table border=0 color=black cellspacing=0 cellpadding=7>
27<tr bgcolor=#cccccc>
28        <td>
29<pre><b>
30int ogg_sync_pageout(<a href="ogg_sync_state.html">ogg_sync_state</a> *oy, <a href="ogg_page.html">ogg_page</a> *og);
31</b></pre>
32        </td>
33</tr>
34</table>
35
36<h3>Parameters</h3>
37<dl>
38<dt><i>oy</i></dt>
39<dd>Pointer to a previously declared <a href="ogg_sync_state.html">ogg_sync_state</a> struct.  Normally, the internal storage of this struct should be filled with newly read data and verified using <a href="ogg_sync_wrote.html">ogg_sync_wrote</a>.</dd>
40<dt><i>og</i></dt>
41<dd>Pointer to page struct filled by this function.
42</dl>
43
44
45<h3>Return Values</h3>
46<blockquote>
47<li>-1 if we were not properly synced and had to skip some bytes.</li>
48<li>
490 if we need more data to verify a page.</li>
50<li>
511 if we have a page.</li>
52</blockquote>
53<p>
54
55<h3>Example Usage</h3>
56<pre>
57if (ogg_sync_pageout(&oy, &og) != 1) {
58        buffer = ogg_sync_buffer(&oy, 8192);
59        bytes = fread(buffer, 1, 8192, stdin);
60        ogg_sync_wrote(&oy, bytes);
61}
62</pre>
63
64<br><br>
65<hr noshade>
66<table border=0 width=100%>
67<tr valign=top>
68<td><p class=tiny>copyright &copy; 2000 xiph.org</p></td>
69<td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/index.html">Ogg Vorbis</a><br><a href="mailto:team@xiph.org">team@xiph.org</a></p></td>
70</tr><tr>
71<td><p class=tiny>libogg documentation</p></td>
72<td align=right><p class=tiny>libogg release 1.0 - 20000615</p></td>
73</tr>
74</table>
75
76
77</body>
78
79</html>
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