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| author | Guenter Geiger <ggeiger@users.sourceforge.net> | 2004-02-02 11:28:02 +0000 |
|---|---|---|
| committer | Guenter Geiger <ggeiger@users.sourceforge.net> | 2004-02-02 11:28:02 +0000 |
| commit | ae6b5d89ea93b95c2990895077cf5e8f0bba9ad9 (patch) | |
| tree | 1e7570f11ac688e94342968e90301c4684e61193 /pd/portaudio_v18/docs/pa_tut_over.html | |
| parent | f26399eba6ee6ce9eb7bae9a4b60a90dc2ebca94 (diff) | |
This commit was generated by cvs2svn to compensate for changes in r1301,
which included commits to RCS files with non-trunk default branches.
svn path=/trunk/; revision=1302
Diffstat (limited to 'pd/portaudio_v18/docs/pa_tut_over.html')
| -rw-r--r-- | pd/portaudio_v18/docs/pa_tut_over.html | 92 |
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diff --git a/pd/portaudio_v18/docs/pa_tut_over.html b/pd/portaudio_v18/docs/pa_tut_over.html new file mode 100644 index 00000000..baa99205 --- /dev/null +++ b/pd/portaudio_v18/docs/pa_tut_over.html @@ -0,0 +1,92 @@ +<!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/4.79 [en] (Windows NT 5.0; 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> + +<center><table COLS=1 WIDTH="100%" BGCOLOR="#FADA7A" > +<tr> +<td> +<center> +<h1> +PortAudio Tutorial</h1></center> +</td> +</tr> +</table></center> + +<h2> +Overview of PortAudio</h2> + +<blockquote>PortAudio is a library that provides streaming audio input +and output. It is a cross-platform API (Application Programming Interface) +that works on Windows, Macintosh, Unix running OSS, SGI, BeOS, and perhaps +other platforms by the time you read this. This means that you can write +a simple 'C' program to process or generate an audio signal, and that program +can run on several different types of computer just by recompiling the +source code. +<p>Here are the steps to writing a PortAudio application: +<ol> +<li> +Write a callback function that will be called by PortAudio when audio processing +is needed.</li> + +<li> +Initialize the PA library and open a stream for audio I/O.</li> + +<li> +Start the stream. Your callback function will be now be called repeatedly +by PA in the background.</li> + +<li> +In your callback you can read audio data from the inputBuffer and/or write +data to the outputBuffer.</li> + +<li> +Stop the stream by returning 1 from your callback, or by calling a stop +function.</li> + +<li> +Close the stream and terminate the library.</li> +</ol> +</blockquote> + +<blockquote>There is also <a href="pa_tut_rw.html">another interface</a> +provided that allows you to generate audio in the foreground. You then +simply write data to the stream and the tool will not return until it is +ready to accept more data. This interface is simpler to use but is usually +not preferred for large applications because it requires that you launch +a thread to perform the synthesis. Launching a thread may be difficult +on non-multi-tasking systems such as the Macintosh prior to MacOS X. +<p>Let's continue by building a simple application that will play a sawtooth +wave. +<p>Please select the page for the specific implementation you would like +to use: +<ul> +<li> +<a href="pa_tut_pc.html">Windows (WMME or DirectSound)</a></li> + +<li> +<a href="pa_tut_mac.html">Macintosh SoundManager for OS 7,8,9</a></li> + +<li> +<a href="pa_tut_mac_osx.html">Macintosh CoreAudio for OS X</a></li> + +<li> +<a href="pa_tut_asio.html">ASIO on Windows or Macintosh</a></li> + +<li> +<a href="pa_tut_oss.html">Unix OSS</a></li> +</ul> +or continue with the <a href="pa_tut_callback.html">next page of the programming +tutorial</a>.</blockquote> +<font size=+2><a href="http://www.portaudio.com/">home</a> | +<a href="pa_tutorial.html">contents</a> +| <a href="pa_tutorial.html">previous</a></font> +</body> +</html> |