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| 55 | <H1><A NAME="SECTION0023100000000000000000"> |
| 56 | 21.1 <tt class="module">sunaudiodev</tt> -- |
| 57 | Access to Sun audio hardware</A> |
| 58 | </H1> |
| 59 | |
| 60 | <P> |
| 61 | <A NAME="module-sunaudiodev"></A> |
| 62 | <p class="availability">Availability: <span |
| 63 | class="platform">SunOS</span>.</p> |
| 64 | |
| 65 | <P> |
| 66 | This module allows you to access the Sun audio interface. The Sun |
| 67 | audio hardware is capable of recording and playing back audio data |
| 68 | in u-LAW<a id='l2h-5225' xml:id='l2h-5225'></a> format with a sample rate of 8K per second. A |
| 69 | full description can be found in the <span class="manpage"><i>audio</i>(7I)</span> manual page. |
| 70 | |
| 71 | <P> |
| 72 | The module |
| 73 | <tt class="module"><a href="module-sunaudiodev-constants.html">SUNAUDIODEV</a></tt><a id='l2h-5226' xml:id='l2h-5226'></a> |
| 74 | defines constants which may be used with this module. |
| 75 | |
| 76 | <P> |
| 77 | This module defines the following variables and functions: |
| 78 | |
| 79 | <P> |
| 80 | <dl><dt><b><span class="typelabel">exception</span> <tt id='l2h-5223' xml:id='l2h-5223' class="exception">error</tt></b></dt> |
| 81 | <dd> |
| 82 | This exception is raised on all errors. The argument is a string |
| 83 | describing what went wrong. |
| 84 | </dd></dl> |
| 85 | |
| 86 | <P> |
| 87 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> |
| 88 | <td><nobr><b><tt id='l2h-5224' xml:id='l2h-5224' class="function">open</tt></b>(</nobr></td> |
| 89 | <td><var>mode</var>)</td></tr></table></dt> |
| 90 | <dd> |
| 91 | This function opens the audio device and returns a Sun audio device |
| 92 | object. This object can then be used to do I/O on. The <var>mode</var> parameter |
| 93 | is one of <code>'r'</code> for record-only access, <code>'w'</code> for play-only |
| 94 | access, <code>'rw'</code> for both and <code>'control'</code> for access to the |
| 95 | control device. Since only one process is allowed to have the recorder |
| 96 | or player open at the same time it is a good idea to open the device |
| 97 | only for the activity needed. See <span class="manpage"><i>audio</i>(7I)</span> for details. |
| 98 | |
| 99 | <P> |
| 100 | As per the manpage, this module first looks in the environment |
| 101 | variable <code>AUDIODEV</code> for the base audio device filename. If not |
| 102 | found, it falls back to <span class="file">/dev/audio</span>. The control device is |
| 103 | calculated by appending ``ctl'' to the base audio device. |
| 104 | </dl> |
| 105 | |
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| 112 | |
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| 114 | <LI><A href="audio-device-objects.html">21.1.1 Audio Device Objects</a> |
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| 153 | <span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span> |
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