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  1. <HTML>
  2. <HEAD>
  3. <TITLE>The RtAudio Home Page</TITLE>
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  9. <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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  13. <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>
  14. <ul>
  15. <li>
  16. object-oriented C++ design </li>
  17. <li>
  18. simple, common API across all supported platforms </li>
  19. <li>
  20. only one source and two header files for easy inclusion in programming projects </li>
  21. <li>
  22. allow simultaneous multi-api support </li>
  23. <li>
  24. support dynamic connection of devices </li>
  25. <li>
  26. provide extensive audio device parameter control </li>
  27. <li>
  28. allow audio device capability probing </li>
  29. <li>
  30. automatic internal conversion for data format, channel number compensation, (de)interleaving, and byte-swapping </li>
  31. </ul>
  32. <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>
  33. <h2><a class="anchor" id="whatsnew">
  34. What's New (Version 4.0)</a></h2>
  35. <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>
  36. <ul>
  37. <li>new support for non-interleaved user data</li>
  38. <li>additional input/output parameter specifications, including channel offset</li>
  39. <li>new support for dynamic connection of devices</li>
  40. <li>new support for stream time</li>
  41. <li>revised callback arguments, including separate input and output buffer arguments</li>
  42. <li>revised C++ exception handling</li>
  43. <li>updated support for OSS version 4.0</li>
  44. <li>discontinued support of blocking functionality</li>
  45. <li>discontinued support of SGI</li>
  46. </ul>
  47. <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>
  48. <h2><a class="anchor" id="download">
  49. Download</a></h2>
  50. <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>
  51. <h2><a class="anchor" id="documentation">
  52. Documentation Links</a></h2>
  53. <ol type="1">
  54. <li><a class="el" href="errors.html">Error Handling</a></li>
  55. <li><a class="el" href="probe.html">Probing Device Capabilities</a></li>
  56. <li><a class="el" href="settings.html">Device Settings</a></li>
  57. <li><a class="el" href="playback.html">Playback</a></li>
  58. <li><a class="el" href="recording.html">Recording</a></li>
  59. <li><a class="el" href="duplex.html">Duplex Mode</a></li>
  60. <li><a class="el" href="multi.html">Using Simultaneous Multiple APIs</a></li>
  61. <li><a class="el" href="compiling.html">Debugging &amp; Compiling</a></li>
  62. <li><a class="el" href="apinotes.html">API Notes</a></li>
  63. <li><a class="el" href="acknowledge.html">Acknowledgements</a></li>
  64. <li><a class="el" href="license.html">License</a></li>
  65. <li><a href="bugs.html">Bug Tracker</a></li>
  66. <li><a href="updates.html">Possible Updates</a></li>
  67. <li><a href="http://sourceforge.net/projects/rtaudio">RtAudio at SourceForge</a> </li>
  68. </ol>
  69. </div>
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  72. <td>&copy;2001-2012 Gary P. Scavone, McGill University. All Rights Reserved.<br>Maintained by <a href="http://www.music.mcgill.ca/~gary/">Gary P. Scavone</a>.</td></tr>
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