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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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   <div id="projectname">PortAudio
   &#160;<span id="projectnumber">2.0</span>
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<div class="title">PortAudio Documentation</div>  </div>
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<div class="textblock"><h1><a class="anchor" id="overview"></a>
Overview</h1>
<p>PortAudio is a cross-platform, open-source C language library for real-time audio input and output. The library provides functions that allow your software to acquire and output real-time audio streams from your computer's hardware audio interfaces. It is designed to simplify writing cross-platform audio applications, and also to simplify the development of audio software in general by hiding the complexities of dealing directly with each native audio API. PortAudio is used to implement sound recording, editing and mixing applications, software synthesizers, effects processors, music players, internet telephony applications, software defined radios and more. Supported platforms include MS Windows, Mac OS X and Linux. Third-party language bindings make it possible to call PortAudio from other programming languages including <a class="el" href="java_binding.html">Java</a>, C++, C#, Python, PureBasic, FreePascal and Lazarus.</p>
<h1><a class="anchor" id="start_here"></a>
Start here</h1>
<ul>
<li>api_overview<br/>
 A top-down view of the PortAudio API, its capabilities, functions and data structures</li>
<li>tutorial_start<br/>
 Get started writing code with PortAudio tutorials</li>
<li><a class="el" href="group__examples__src.html">Examples</a><br/>
 Simple example programs demonstrating PortAudio usage</li>
<li>License<br/>
 PortAudio is licenced under the MIT Expat open source licence. We make a non-binding request for you to contribute your changes back to the project.</li>
</ul>
<h1><a class="anchor" id="reference"></a>
API Reference</h1>
<ul>
<li><a class="el" href="portaudio_8h.html" title="The portable PortAudio API. ">portaudio.h</a> Portable API<br/>
 Detailed documentation for each portable API function and data type</li>
<li><a class="el" href="group__public__header.html">Host API Specific Extensions</a><br/>
 Documentation for non-portable platform-specific host API extensions</li>
</ul>
<h1><a class="anchor" id="resources"></a>
Resources</h1>
<ul>
<li><a href="http://www.portaudio.com">The PortAudio website</a></li>
<li><a href="http://music.columbia.edu/mailman/listinfo/portaudio/">Our mailing list for users and developers</a><br/>
</li>
<li><a href="http://www.assembla.com/spaces/portaudio/wiki">The PortAudio wiki</a></li>
<li>java_binding<br/>
 Documentation for the Java JNI interface to PortAudio</li>
</ul>
<h1><a class="anchor" id="developer_resources"></a>
Developer Resources</h1>
<ul>
<li><a href="http://www.assembla.com/spaces/portaudio/wiki">Our wiki and issue tracking system</a></li>
<li><a href="http://www.portaudio.com/docs/proposals/014-StyleGuide.html">Coding guidelines</a></li>
</ul>
<p>If you're interested in helping out with PortAudio development we're more than happy for you to be involved. Just drop by the PortAudio mailing list and ask how you can help. Or <a href="http://www.assembla.com/spaces/portaudio/tickets">check out the starter tickets</a>.</p>
<h1><a class="anchor" id="older_api_versions"></a>
Older API Versions</h1>
<p>This documentation covers the current API version: PortAudio V19, API version 2.0. API 2.0 differs in a number of ways from previous versions (most often encountered in PortAudio V18), please consult the enhancement proposals for details of what was added/changed for V19: <a href="http://www.portaudio.com/docs/proposals/index.html">http://www.portaudio.com/docs/proposals/index.html</a> </p>
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