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-<title>Vorbisfile - function - ov_test</title>
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-<td><p class=tiny>Vorbisfile documentation</p></td>
-<td align=right><p class=tiny>vorbisfile version 1.2.0 - 20070723</p></td>
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-</table>
-
-<h1>ov_test</h1>
-
-<p><i>declared in "vorbis/vorbisfile.h";</i></p>
-
-<p>
-This partially opens a vorbis file to test for Vorbis-ness. It loads
-the headers for the first chain and tests for seekability (but does not seek).
-Use <a href="ov_test_open.html">ov_test_open()</a> to finish opening the file
-or <a href="ov_clear.html">ov_clear</a> to close/free it.
-<p>
-
-<p><em><b> WARNING for Windows developers: </b> Do not use ov_test()
-in Windows applications; Windows linking places restrictions on
-passing <tt>FILE *</tt> handles successfully, and ov_test() runs afoul
-of these restrictions <a href="#winfoot">[a]</a> in exactly the same
-way as <a href="ov_open.html">ov_open()</a>. See the <a
-href="ov_test_callbacks.html">ov_test_callbacks() page </a> for
-details on using <a
-href="ov_test_callbacks.html">ov_test_callbacks()</a> instead. </em>
-<p>
-
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- <td>
-<pre><b>
-int ov_test(FILE *f,<a href="OggVorbis_File.html">OggVorbis_File</a> *vf,char *initial,long ibytes);
-</b></pre>
- </td>
-</tr>
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-<h3>Parameters</h3>
-<dl>
-<dt><i>f</i></dt>
-<dd>File pointer to an already opened file
-or pipe (it need not be seekable--though this obviously restricts what
-can be done with the bitstream).</dd>
-<dt><i>vf</i></dt>
-<dd>A pointer to the OggVorbis_File structure--this is used for ALL the externally visible libvorbisfile
-functions. Once this has been called, the same <tt>OggVorbis_File</tt>
-struct should be passed to all the libvorbisfile functions.</dd>
-<dt><i>initial</i></dt>
-<dd>Typically set to NULL. This parameter is useful if some data has already been
-read from the file and the stream is not seekable. It is used in conjunction with <tt>ibytes</tt>. In this case, <tt>initial</tt>
-should be a pointer to a buffer containing the data read.</dd>
-<dt><i>ibytes</i></dt>
-<dd>Typically set to 0. This parameter is useful if some data has already been
-read from the file and the stream is not seekable. In this case, <tt>ibytes</tt>
-should contain the length (in bytes) of the buffer. Used together with <tt>initial</tt></dd>
-</dl>
-
-
-<h3>Return Values</h3>
-<blockquote>
-<li>0 for success</li>
-
-<li>less than zero for failure:</li>
-<ul>
-<li>OV_EREAD - A read from media returned an error.</li>
-<li>OV_ENOTVORBIS - Bitstream contains no Vorbis data.</li>
-<li>OV_EVERSION - Vorbis version mismatch.</li>
-<li>OV_EBADHEADER - Invalid Vorbis bitstream header.</li>
-<li>OV_EFAULT - Internal logic fault; indicates a bug or heap/stack corruption.</li>
-</ul>
-</blockquote>
-<p>
-
-<h3>Notes</h3>
-
-All the <a href="ov_open.html#notes">notes from ov_open()</a> apply to ov_test().
-
-<br><br>
-<hr noshade>
-<table border=0 width=100%>
-<tr valign=top>
-<td><p class=tiny>copyright © 2007 Xiph.org</p></td>
-<td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/">Ogg Vorbis</a></p></td>
-</tr><tr>
-<td><p class=tiny>Vorbisfile documentation</p></td>
-<td align=right><p class=tiny>vorbisfile version 1.2.0 - 20070723</p></td>
-</tr>
-</table>
-
-</body>
-
-</html>
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