<html> <head> <title>Tremor - Seeking</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>Tremor documentation</p></td> <td align=right><p class=tiny>Tremor version 1.0 - 20020403</p></td> </tr> </table> <h1>Seeking</h1> <p>Seeking functions allow you to specify a specific point in the stream to begin or continue decoding. <p> All libvorbisidec seeking routines are declared in "ivorbisfile.h". <p>Certain seeking functions are best suited to different situations. When speed is important and exact positioning isn't required, page-level seeking should be used. Note also that Vorbis files do not necessarily start at a sample number or time offset of zero. Do not be surprised if a file begins at a positive offset of several minutes or hours, such as would happen if a large stream (such as a concert recording) is chopped into multiple separate files. Requesting to seek to a position before the beginning of such a file will seek to the position where audio begins.<p> </ul> <table border=1 color=black width=50% cellspacing=0 cellpadding=7> <tr bgcolor=#cccccc> <td><b>function</b></td> <td><b>purpose</b></td> </tr> <tr valign=top> <td><a href="ov_raw_seek.html">ov_raw_seek</a></td> <td>This function seeks to a position specified in the compressed bitstream, specified in bytes.</td> </tr> <tr valign=top> <td><a href="ov_pcm_seek.html">ov_pcm_seek</a></td> <td>This function seeks to a specific audio sample number, specified in pcm samples.</td> </tr> <tr valign=top> <td><a href="ov_pcm_seek_page.html">ov_pcm_seek_page</a></td> <td>This function seeks to the closest page preceding the specified audio sample number, specified in pcm samples.</td> </tr> <tr valign=top> <td><a href="ov_time_seek.html">ov_time_seek</a></td> <td>This function seeks to the specific time location in the bitstream, specified in integer milliseconds. Note that this differs from the reference vorbisfile implementation, which takes seconds as a float. </td> </tr> <tr valign=top> <td><a href="ov_time_seek_page.html">ov_time_seek_page</a></td> <td>This function seeks to the closest page preceding the specified time position in the bitstream, specified in integer milliseconds.</td> </tr> </table> <br><br> <hr noshade> <table border=0 width=100%> <tr valign=top> <td><p class=tiny>copyright © 2002 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>Tremor documentation</p></td> <td align=right><p class=tiny>Tremor version 1.0 - 20020403</p></td> </tr> </table> </body> </html>