xiph
/
vorbis
mirror of https://git.xiph.org/vorbis.git


			
							12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667
							<html>

<head>
<title>vorbisfile - datatype - ov_callbacks</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>vorbisfile documentation</p></td>
<td align=right><p class=tiny>vorbisfile version 1.25 - 20000615</p></td>
</tr>
</table>

<h1>ov_callbacks</h1>

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

<p>
The ov_callbacks structure contains file manipulation function prototypes necessary for opening, closing, seeking, and location.
<p>
The ov_callbacks structure does not need to be user-defined if you are working with a standard file.  The typical <a href="ov_open.html">ov_open()</a> call will fill ov_callbacks for you.  However, ov_callbacks should be defined if you are using other data sources.  In this situation, use <a href="ov_open_callbacks.html">ov_open_callbacks()</a> instead of <a href="ov_open.html">ov_open()</a>.
<p>

<table border=0 width=100% color=black cellspacing=0 cellpadding=7>
<tr bgcolor=#cccccc>
	<td>
<pre><b>typedef struct {
  size_t (*read_func)  (void *ptr, size_t size, size_t nmemb, void *datasource);
  int    (*seek_func)  (void *datasource, int64_t offset, int whence);
  int    (*close_func) (void *datasource);
  long   (*tell_func)  (void *datasource);
} ov_callbacks;</b></pre>
	</td>
</tr>
</table>

<h3>Relevant Struct Members</h3>
<dl>
<dt><i>read_func</i></dt>
<dd>Pointer to custom data reading function.</dd>
<dt><i>seek_func</i></dt>
<dd>Pointer to custom data seeking function.</dd>
<dt><i>close_func</i></dt>
<dd>Pointer to custom data source closure function.</dd>
<dt><i>tell_func</i></dt>
<dd>Pointer to custom data location function.</dd>
</dl>


<br><br>
<hr noshade>
<table border=0 width=100%>
<tr valign=top>
<td><p class=tiny>copyright &copy; 2000 vorbis team</p></td>
<td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/index.html">Ogg Vorbis</a><br><a href="mailto:team@vorbis.org">team@vorbis.org</a></p></td>
</tr><tr>
<td><p class=tiny>vorbisfile documentation</p></td>
<td align=right><p class=tiny>vorbisfile version 1.25 - 20000615</p></td>
</tr>
</table>

</body>

</html>