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1 <html>
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3 <head>
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4 <title>Vorbisfile - function - ov_pcm_seek_page</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>Vorbisfile documentation</p></td>
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12 <td align=right><p class=tiny>vorbisfile version 1.3.2 - 20101101</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>ov_pcm_seek_page</h1>
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17
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18 <p><i>declared in "vorbis/vorbisfile.h";</i></p>
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19
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20 <p>Seeks to the closest page preceding the specified location (in pcm samples) within the physical bitstream. This function only works for seekable streams.
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21 <p>This function is faster than <a href="ov_pcm_seek.html">ov_pcm_seek</a> because the function can begin decoding at a page boundary rather than seeking through any remaining samples before the specified location. However, it is less accurate.
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22 <p>This also updates everything needed within the
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23 decoder, so you can immediately call <a href="ov_read.html">ov_read()</a> and get data from
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24 the newly seeked to position.
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25 <p>
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26
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27 <br><br>
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28 <table border=0 color=black cellspacing=0 cellpadding=7>
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29 <tr bgcolor=#cccccc>
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30 <td>
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31 <pre><b>
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32 int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos);
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33 </b></pre>
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34 </td>
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35 </tr>
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36 </table>
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37
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38 <h3>Parameters</h3>
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39 <dl>
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40 <dt><i>vf</i></dt>
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41 <dd>A pointer to the OggVorbis_File structure--this is used for ALL the externally visible libvorbisfile
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42 functions.</dd>
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43 <dt><i>pos</i></dt>
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44 <dd>Position in pcm samples to seek to in the bitstream.</dd>
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45 </dl>
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46
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47
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48 <h3>Return Values</h3>
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49 <blockquote>
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50 <ul>
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51 <li>0 for success</li>
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52
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53 <li>
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54 nonzero indicates failure, described by several error codes:
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55 <ul>
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56 <li>OV_ENOSEEK - Bitstream is not seekable.
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57 </li>
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58 <li>OV_EINVAL - Invalid argument value; possibly called with an OggVorbis_File structure that isn't open.
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59 </li>
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60 <li>OV_EREAD - A read from media returned an error.
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61 </li>
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62 <li>OV_EFAULT - Internal logic fault; indicates a bug or heap/stack
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63 corruption.
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64 </li>
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65 <li>OV_EBADLINK - Invalid stream section supplied to libvorbisfile, or the requested link is corrupt.
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66 </li>
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67 </ul></li>
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68 </ul></blockquote>
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69
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70 <br><br>
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71 <hr noshade>
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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 © 2000-2010 Xiph.Org</p></td>
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75 <td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/">Ogg Vorbis</a></p></td>
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76 </tr><tr>
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77 <td><p class=tiny>Vorbisfile documentation</p></td>
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78 <td align=right><p class=tiny>vorbisfile version 1.3.2 - 20101101</p></td>
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79 </tr>
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80 </table>
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81
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82 </body>
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83
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84 </html>
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