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| 2 |
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| 3 | <head>
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| 4 | <title>libogg - function - ogg_stream_packetpeek</title>
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| 5 | <link rel=stylesheet href="style.css" type="text/css">
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| 6 | </head>
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| 7 |
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| 8 | <body bgcolor=white text=black link="#5555ff" alink="#5555ff" vlink="#5555ff">
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| 9 | <table border=0 width=100%>
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| 10 | <tr>
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| 11 | <td><p class=tiny>libogg documentation</p></td>
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| 12 | <td align=right><p class=tiny>libogg release 1.3.5 - 20210603</p></td>
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| 13 | </tr>
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| 14 | </table>
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| 15 |
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| 16 | <h1>ogg_stream_packetpeek</h1>
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| 17 |
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| 18 | <p><i>declared in "ogg/ogg.h";</i></p>
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| 19 |
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| 20 | <p>This function attempts to assemble a raw data packet and returns
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| 21 | it without advancing decoding.</p>
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| 22 |
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| 23 | <p>In a typical situation, this would be called
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| 24 | speculatively after <a
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| 25 | href="ogg_stream_pagein.html">ogg_stream_pagein()</a> to check
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| 26 | the packet contents before handing it off to a codec for
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| 27 | decompression. To advance page decoding and remove
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| 28 | the packet from the sync structure, call
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| 29 | <a href="ogg_stream_packetout.html">ogg_stream_packetout()</a>.</p>
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| 30 |
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| 31 | <br><br>
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| 32 |
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| 33 | <table border=0 color=black cellspacing=0 cellpadding=7>
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| 34 | <tr bgcolor=#cccccc>
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| 35 | <td>
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| 36 | <pre><b>
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| 37 | int ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op);
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| 38 | </b></pre>
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| 39 | </td>
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| 40 | </tr>
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| 41 | </table>
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| 42 |
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| 43 | <h3>Parameters</h3>
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| 44 | <dl>
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| 45 | <dt><i>os</i></dt>
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| 46 | <dd>Pointer to a previously declared
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| 47 | <a href="ogg_stream_state.html">ogg_stream_state</a> struct. Before this
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| 48 | function is called, an <a href="ogg_page.html">ogg_page</a> should be
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| 49 | submitted to the stream using
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| 50 | <a href="ogg_stream_pagein.html">ogg_stream_pagein()</a>.</dd>
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| 51 | <dt><i>op</i></dt>
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| 52 | <dd>Pointer to the next packet available in the bitstream, if
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| 53 | any. A NULL value may be passed in the case of a simple "is there a
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| 54 | packet?" check.</dd>
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| 55 | </dl>
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| 56 |
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| 57 |
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| 58 | <h3>Return Values</h3>
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| 59 | <blockquote>
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| 60 | <ul>
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| 61 | <li>-1 if there's no packet available due to lost sync or a hole in the data.</li>
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| 62 | <li>0 if there is insufficient data available to complete a packet, or on unrecoverable internal error occurred.</li>
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| 63 | <li>1 if a packet is available.</li>
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| 64 | </ul>
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| 65 | </blockquote>
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| 66 |
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| 67 |
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| 68 | <br><br>
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| 69 |
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| 70 | <hr noshade>
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| 71 |
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| 72 | <table border=0 width=100%>
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| 73 | <tr valign=top>
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| 74 | <td><p class=tiny>copyright © 2000-2021 Xiph.Org Foundation</p></td>
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| 75 | <td align=right><p class=tiny><a href="http://www.xiph.org/ogg/">Ogg Container Format</a></p></td>
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| 76 | </tr><tr>
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| 77 | <td><p class=tiny>libogg documentation</p></td>
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| 78 | <td align=right><p class=tiny>libogg release 1.3.5 - 20210603</p></td>
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| 79 | </tr>
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| 80 | </table>
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| 81 |
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| 82 |
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| 83 | </body>
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| 84 |
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| 85 | </html>
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