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<div class="title">The <a class="el" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a> Home Page </div>  </div>
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<div class="textblock"><p><a class="el" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a> is a set of C++ classes that provide a common API (Application Programming Interface) for realtime audio input/output across Linux, Macintosh OS-X and Windows operating systems. <a class="el" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a> significantly simplifies the process of interacting with computer audio hardware. It was designed with the following objectives:</p>
<ul>
<li>
object-oriented C++ design </li>
<li>
simple, common API across all supported platforms </li>
<li>
only one source and two header files for easy inclusion in programming projects </li>
<li>
allow simultaneous multi-api support </li>
<li>
support dynamic connection of devices </li>
<li>
provide extensive audio device parameter control </li>
<li>
allow audio device capability probing </li>
<li>
automatic internal conversion for data format, channel number compensation, (de)interleaving, and byte-swapping </li>
</ul>
<p><a class="el" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a> incorporates the concept of audio streams, which represent audio output (playback) and/or input (recording). Available audio devices and their capabilities can be enumerated and then specified when opening a stream. Where applicable, multiple API support can be compiled and a particular API specified when creating an <a class="el" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a> instance. See the <a class="el" href="apinotes.html">API Notes</a> section for information specific to each of the supported audio APIs.</p>
<h1><a class="anchor" id="whatsnew"></a>
Latest Updates (Version 4.0.12)</h1>
<ul>
<li>new functionality to allow error reporting via a client-supplied function (thanks to Pavel Mogilevskiy)</li>
<li>new function to return the version number</li>
<li>updated RtAudio.cpp and ASIO files for UNICODE support (thanks to Renaud Schoonbroodt)</li>
<li>updates to PulseAudio API support (thanks to Peter Meerwald and Tristan Matthews)</li>
<li>updates for pkg-config support in configure script</li>
<li>24-bit format changed to true 24-bit format, not sub-bytes of 32-bits (thanks to Marc Britton)</li>
<li>bug fixes to make sure stream status is closed if error during probeDeviceOpen</li>
<li>updates / fixes to SCHED_RR code in ALSA (thanks to Marc Lindahl)</li>
<li>various changes to avoid global variables (thanks to Martin Koegler)</li>
</ul>
<h1><a class="anchor" id="download"></a>
Download</h1>
<p>Latest Release (16 April 2013): <a href="http://www.music.mcgill.ca/~gary/rtaudio/release/rtaudio-4.0.12.tar.gz">Version 4.0.12</a></p>
<h1><a class="anchor" id="documentation"></a>
Documentation Links</h1>
<ol type="1">
<li><a class="el" href="errors.html">Error Handling</a></li>
<li><a class="el" href="probe.html">Probing Device Capabilities</a></li>
<li><a class="el" href="settings.html">Device Settings</a></li>
<li><a class="el" href="playback.html">Playback</a></li>
<li><a class="el" href="recording.html">Recording</a></li>
<li><a class="el" href="duplex.html">Duplex Mode</a></li>
<li><a class="el" href="multi.html">Using Simultaneous Multiple APIs</a></li>
<li><a class="el" href="compiling.html">Debugging &amp; Compiling</a></li>
<li><a class="el" href="apinotes.html">API Notes</a></li>
<li><a class="el" href="acknowledge.html">Acknowledgements</a></li>
<li><a class="el" href="license.html">License</a></li>
<li><a href="bugs.html">Bug Tracker</a></li>
<li><a href="updates.html">Possible Updates</a></li>
<li><a href="http://sourceforge.net/projects/rtaudio">RtAudio at SourceForge</a> </li>
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