| [16] | 1 | <html> |
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| 2 | |
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| 3 | <head> |
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| 4 | <title>Vorbisfile - function - ov_read_float</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 1.2.0 - 20070723</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_read_float()</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> |
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| 21 | This is the function used to decode a Vorbis file within a loop, but |
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| 22 | returns samples in native float format instead of in integer formats. |
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| 23 | </p><p> |
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| 24 | For more information on how ov_read_float() deals with the complex issues |
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| 25 | of chaining, etc, refer to the documentation for <a href="ov_read.html">ov_read()</a>. |
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| 26 | </p> |
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| 27 | |
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| 28 | <br><br> |
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| 29 | <table border=0 color=black cellspacing=0 cellpadding=7> |
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| 30 | <tr bgcolor=#cccccc> |
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| 31 | <td> |
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| 32 | <pre><b> |
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| 33 | long ov_read_float(<a href="OggVorbis_File.html">OggVorbis_File</a> *vf, float ***pcm_channels, int samples, int *bitstream); |
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| 34 | </b></pre> |
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| 35 | </td> |
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| 36 | </tr> |
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| 37 | </table> |
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| 38 | |
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| 39 | <h3>Parameters</h3> |
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| 40 | <dl> |
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| 41 | <dt><i>vf</i></dt> |
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| 42 | <dd>A pointer to the OggVorbis_File structure--this is used for ALL the externally visible vorbisfile |
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| 43 | functions.</dd> |
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| 44 | <dt><i>pcm_channels</i></dt> |
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| 45 | <dd>A pointer to an output buffer. The pointer will be set to the decoded output buffer.</dd> |
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| 46 | <dt><i>samples</i></dt> |
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| 47 | <dd>Maximum number of decoded samples to produce.</dd> |
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| 48 | <dt><i>bitstream</i></dt> |
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| 49 | <dd>A pointer to the number of the current logical bitstream.</dd> |
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| 50 | </dl> |
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| 51 | |
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| 52 | |
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| 53 | <h3>Return Values</h3> |
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| 54 | <blockquote> |
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| 55 | <dl> |
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| 56 | <dt>OV_HOLE</dt> |
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| 57 | <dd>indicates there was an interruption in the data. |
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| 58 | <br>(one of: garbage between pages, loss of sync followed by |
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| 59 | recapture, or a corrupt page)</dd> |
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| 60 | <dt>OV_EBADLINK</dt> |
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| 61 | <dd>indicates that an invalid stream section was supplied to |
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| 62 | libvorbisfile, or the requested link is corrupt.</dd> |
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| 63 | <dt>0</dt> |
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| 64 | <dd>indicates EOF</dd> |
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| 65 | <dt><i>n</i></dt> |
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| 66 | <dd>indicates actual number of samples read. <tt>ov_read_float()</tt> will |
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| 67 | decode at most one vorbis packet per invocation, so the value |
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| 68 | returned will generally be less than <tt>length</tt>. |
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| 69 | </dl> |
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| 70 | </blockquote> |
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| 71 | |
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| 72 | <h3>Notes</h3> |
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| 73 | <p><b>Typical usage:</b> |
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| 74 | <blockquote> |
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| 75 | <tt>float **pcm; |
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| 76 | samples_read = ov_read_float(&vf,pcm, 1024, &current_section)</tt> |
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| 77 | </blockquote> |
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| 78 | |
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| 79 | This decodes up to 1024 float samples. |
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| 80 | </p> |
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| 81 | |
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| 82 | <br> |
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| 83 | <br><br> |
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| 84 | <hr noshade> |
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| 85 | <table border=0 width=100%> |
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| 86 | <tr valign=top> |
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| 87 | <td><p class=tiny>copyright © 2002 vorbis team</p></td> |
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| 88 | <td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/index.html">Ogg Vorbis</a><br><a href="mailto:team@vorbis.org">team@vorbis.org</a></p></td> |
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| 89 | </tr><tr> |
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| 90 | <td><p class=tiny>Vorbisfile documentation</p></td> |
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| 91 | <td align=right><p class=tiny>vorbisfile version 1.2.0 - 20070723</p></td> |
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| 92 | </tr> |
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| 93 | </table> |
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| 94 | |
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| 95 | |
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| 96 | </body> |
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| 97 | |
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| 98 | </html> |
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| 99 | |
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| 100 | |
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| 101 | |
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