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| <title>Tremor - Vorbisfile Differences</title> |
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| <td><p class=tiny>Tremor documentation</p></td> |
| <td align=right><p class=tiny>Tremor version 1.0 - 20020403</p></td> |
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| <h1>Tremor / Vorbisfile API Differences</h1> |
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| <p> |
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| The Tremor libvorbisidec library exposes an API intended to be as |
| similar as possible to the familiar 'vorbisfile' library included with |
| the open source Vorbis reference libraries distributed for free by |
| Xiph.org. Differences are summarized below.<p> |
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| <h2>OggVorbis_File structure</h2> |
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| The <tt>bittrack</tt> and <tt>samptrack</tt> fields in the <a |
| href="OggVorbis_File.html">OggVorbis_File</a> structure are changed to |
| 64 bit integers in Tremor, from doubles in vorbisfile. |
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| <h2>Time-related seek and tell function calls</h2> |
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| The <a href="ov_time_total.html">ov_time_total()</a> and <a |
| href="ov_time_tell.html">ov_time_tell()</a> functions return milliseconds as |
| 64 bit integers in Tremor. In vorbisfile, these functions returned |
| seconds as doubles.<p> |
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| In Tremor, the <a href="ov_time_seek.html">ov_time_seek()</a> and <a |
| href="ov_time_seek_page.html">ov_time_seek_page()</a> calls take |
| seeking positions in milliseconds as 64 bit integers, rather than in |
| seconds as doubles as in Vorbisfile.<p> |
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| <h2>Reading decoded data</h2> |
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| Tremor <a href="ov_read.html">ov_read()</a> always returns data as |
| signed 16 bit interleaved PCM in host byte order. As such, it does not |
| take arguments to request specific signedness, byte order or bit depth |
| as in Vorbisfile.<p> |
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| Tremor does not implement <tt>ov_read_float()</tt>.<p> |
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| <br><br> |
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| <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> |
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| </body> |
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| </html> |
