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<a class="qindex" href="index.html">Home</a> &nbsp; <a class="qindex" href="annotated.html">Class/Enum List</a> &nbsp; <a class="qindex" href="files.html">File List</a> &nbsp; <a class="qindex" href="functions.html">Compound Members</a> &nbsp; </CENTER>
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<h1>The <a class="el" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a> Home Page </h1><h3 class="version">4.0.11 </h3><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>
<h2><a class="anchor" id="whatsnew">
What's New (Version 4.0)</a></h2>
<p><a class="el" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a> V4 represents a significant rewrite of the code and includes a number of API and functionality changes from previous versions. A partial list of the changes includes:</p>
<ul>
<li>new support for non-interleaved user data</li>
<li>additional input/output parameter specifications, including channel offset</li>
<li>new support for dynamic connection of devices</li>
<li>new support for stream time</li>
<li>revised callback arguments, including separate input and output buffer arguments</li>
<li>revised C++ exception handling</li>
<li>updated support for OSS version 4.0</li>
<li>discontinued support of blocking functionality</li>
<li>discontinued support of SGI</li>
</ul>
<p>Devices are now re-enumerated every time the <a class="el" href="classRtAudio.html#a747ce2d73803641bbb66d6e78092aa1a" title="A public function that queries for the number of audio devices available.">RtAudio::getDeviceCount()</a>, <a class="el" href="classRtAudio.html#a02d7ff44ad1d7eae22283a052f3dfda8" title="Return an RtAudio::DeviceInfo structure for a specified device number.">RtAudio::getDeviceInfo()</a>, and <a class="el" href="classRtAudio.html#afacc99740fa4c5606fb35467cdea6da8" title="A public function for opening a stream with the specified parameters.">RtAudio::openStream()</a> functions are called. This allows for the proper identification of hot-pluggable (USB, Firewire, ...) devices that are connected after an <a class="el" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a> instance is created.</p>
<h2><a class="anchor" id="download">
Download</a></h2>
<p>Latest Release (14 June 2012): <a href="http://www.music.mcgill.ca/~gary/rtaudio/release/rtaudio-4.0.11.tar.gz">Version 4.0.11</a></p>
<h2><a class="anchor" id="documentation">
Documentation Links</a></h2>
<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>
</ol>
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