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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="GENERATOR" content="Mozilla/4.73 [en]C-gatewaynet (Win98; U) [Netscape]">
<meta name="Author" content="Phil Burk">
<meta name="Description" content="Tutorial for PortAudio, a cross platform, open-source, audio I/O library.It provides a very simple API for recording and/or playing sound using a simple callback function.">
<meta name="KeyWords" content="audio, tutorial, library, portable, open-source, DirectSound,sound, music, JSyn, synthesis,">
<title>PortAudio Tutorial</title>
</head>
<body>
&nbsp;
<center><table COLS=1 WIDTH="100%" BGCOLOR="#FADA7A" >
<tr>
<td>
<center>
<h1>
PortAudio Tutorial</h1></center>
</td>
</tr>
</table></center>
<h2>
Initializing PortAudio</h2>
<blockquote>Before making any other calls to PortAudio, you must call <tt>Pa_Initialize</tt>().
This will trigger a scan of available devices which can be queried later.
Like most PA functions, it will return a result of type <tt>paError</tt>.
If the result is not <tt>paNoError</tt>, then an error has occurred.
<blockquote>
<pre>err = Pa_Initialize();
if( err != paNoError ) goto error;</pre>
</blockquote>
You can get a text message that explains the error message by passing it
to
<blockquote>
<pre>printf(&nbsp; "PortAudio error: %s\n", Pa_GetErrorText( err ) );</pre>
</blockquote>
</blockquote>
<font size=+2><a href="http://www.portaudio.com/">home</a> | <a href="pa_tutorial.html">contents</a>
| <a href="pa_tut_callback.html">previous</a> |&nbsp; <a href="pa_tut_open.html">next</a></font>
</body>
</html>