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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
+<title>Graphic Equalizer 2: C:/Project Marcel &amp; Oliver/Graphic_Equalizer/src/audio.hcc File Reference</title>
+<link href="doxygen.css" rel="stylesheet" type="text/css">
+</head><body>
+<!-- Generated by Doxygen 1.3.9.1 -->
+<div class="qindex"><a class="qindex" href="main.html">Main&nbsp;Page</a> | <a class="qindex" href="annotated.html">Data&nbsp;Structures</a> | <a class="qindex" href="dirs.html">Directories</a> | <a class="qindex" href="files.html">File&nbsp;List</a> | <a class="qindex" href="functions.html">Data&nbsp;Fields</a> | <a class="qindex" href="globals.html">Globals</a></div>
+<div class="nav">
+<a class="el" href="dir_000000.html">C:</a>&nbsp;/&nbsp;<a class="el" href="dir_000001.html">Project Marcel &amp; Oliver</a>&nbsp;/&nbsp;<a class="el" href="dir_000002.html">Graphic_Equalizer</a>&nbsp;/&nbsp;<a class="el" href="dir_000004.html">src</a></div>
+<h1>audio.hcc File Reference</h1><code>#include &lt;stdlib.hch&gt;</code><br>
+<code>#include "pal_master.hch"</code><br>
+<code>#include "<a class="el" href="configuration_8hch-source.html">configuration.hch</a>"</code><br>
+<code>#include "<a class="el" href="audio_8hch-source.html">audio.hch</a>"</code><br>
+
+<p>
+Include dependency graph for audio.hcc:<p><center><img src="audio_8hcc__incl.png" border="0" usemap="#audio.hcc_map" alt="Include dependency graph"></center>
+<map name="audio.hcc_map">
+<area href="configuration_8hch.html" shape="rect" coords="245,7,370,34" alt="">
+<area href="audio_8hch.html" shape="rect" coords="394,7,474,34" alt="">
+</map>
+
+<p>
+<a href="audio_8hcc-source.html">Go to the source code of this file.</a><table border="0" cellpadding="0" cellspacing="0">
+<tr><td></td></tr>
+<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
+<tr><td class="memItemLeft" nowrap align="right" valign="top">macro proc&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="audio_8hcc.html#a0">audio_init</a> (gain_level, input_source, sample_rate, AUDIOIN, AUDIOOUT)</td></tr>
+
+<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Set some inital values to the audio hardware. <a href="#a0"></a><br></td></tr>
+<tr><td class="memItemLeft" nowrap align="right" valign="top">macro proc&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="audio_8hcc.html#a1">audio_main</a> (audiodata, AUDIOIN, AUDIOOUT)</td></tr>
+
+<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Main audiodriver. This function never returns! It calls the audiohandlers and stores samples into a global array. Once 64 Samples are collected it raises a signal AUDIO_READY to let other processes know it's ready. We use quadruple buffering for audio input and double buffering for audio output. <a href="#a1"></a><br></td></tr>
+</table>
+<hr><a name="_details"></a><h2>Detailed Description</h2>
+<h2><a class="anchor" name="generic">
+Graphic Equalizer API</a></h2>
+<h2><a class="anchor" name="project">
+Project information.</a></h2>
+Project Graphic Equalizer<br>
+ <dl compact><dt><b>Author:</b></dt><dd>O.M. Schinagl </dd></dl>
+<dl compact><dt><b>Date:</b></dt><dd>20041011 </dd></dl>
+<dl compact><dt><b>Version:</b></dt><dd>0.1</dd></dl>
+<h2><a class="anchor" name="copyright">
+Copyright</a></h2>
+Copyright ©2004 Koninklijke Philips Electronics N.V. All rights reserved<h2><a class="anchor" name="history">
+Change history</a></h2>
+20041011: <br>
+ Initial version
+<p>
+Definition in file <a class="el" href="audio_8hcc-source.html">audio.hcc</a>.<hr><h2>Function Documentation</h2>
+<a class="anchor" name="a0" doxytag="audio.hcc::audio_init"></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top">macro proc audio_init </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="md" nowrap valign="top">gain_level&nbsp;</td>
+ <td class="mdname" nowrap>, </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap align="right"></td>
+ <td class="md"></td>
+ <td class="md" nowrap>input_source&nbsp;</td>
+ <td class="mdname" nowrap>, </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap align="right"></td>
+ <td class="md"></td>
+ <td class="md" nowrap>sample_rate&nbsp;</td>
+ <td class="mdname" nowrap>, </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap align="right"></td>
+ <td class="md"></td>
+ <td class="md" nowrap>AUDIOIN&nbsp;</td>
+ <td class="mdname" nowrap>, </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap align="right"></td>
+ <td class="md"></td>
+ <td class="md" nowrap>AUDIOOUT&nbsp;</td>
+ <td class="mdname" nowrap></td>
+ </tr>
+ <tr>
+ <td class="md"></td>
+ <td class="md">)&nbsp;</td>
+ <td class="md" colspan="2"></td>
+ </tr>
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing="5" cellpadding="0" border="0">
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+Set some inital values to the audio hardware.
+<p>
+<dl compact><dt><b>Parameters:</b></dt><dd>
+ <table border="0" cellspacing="2" cellpadding="0">
+ <tr><td valign="top"></td><td valign="top"><em>gain_level</em>&nbsp;</td><td>Set the input amplifier to this amplification level. </td></tr>
+ <tr><td valign="top"></td><td valign="top"><em>input_source</em>&nbsp;</td><td>Choose between microphone input or linein input. </td></tr>
+ <tr><td valign="top"></td><td valign="top"><em>sample_rate</em>&nbsp;</td><td>Set the sample rate between 8000 and 48000</td></tr>
+ </table>
+</dl>
+<dl compact><dt><b>Returns:</b></dt><dd>void </dd></dl>
+<dl compact><dt><b>Return values:</b></dt><dd>
+ <table border="0" cellspacing="2" cellpadding="0">
+ <tr><td valign="top"></td><td valign="top"><em>void</em>&nbsp;</td><td></td></tr>
+ </table>
+</dl>
+
+<p>
+Definition at line <a class="el" href="audio_8hcc-source.html#l00045">45</a> of file <a class="el" href="audio_8hcc-source.html">audio.hcc</a>.
+<p>
+Referenced by <a class="el" href="main_8hcc-source.html#l00051">main()</a>. </td>
+ </tr>
+</table>
+<a class="anchor" name="a1" doxytag="audio.hcc::audio_main"></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" nowrap valign="top">macro proc audio_main </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="md" nowrap valign="top">audiodata&nbsp;</td>
+ <td class="mdname" nowrap>, </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap align="right"></td>
+ <td class="md"></td>
+ <td class="md" nowrap>AUDIOIN&nbsp;</td>
+ <td class="mdname" nowrap>, </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap align="right"></td>
+ <td class="md"></td>
+ <td class="md" nowrap>AUDIOOUT&nbsp;</td>
+ <td class="mdname" nowrap></td>
+ </tr>
+ <tr>
+ <td class="md"></td>
+ <td class="md">)&nbsp;</td>
+ <td class="md" colspan="2"></td>
+ </tr>
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing="5" cellpadding="0" border="0">
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+Main audiodriver. This function never returns! It calls the audiohandlers and stores samples into a global array. Once 64 Samples are collected it raises a signal AUDIO_READY to let other processes know it's ready. We use quadruple buffering for audio input and double buffering for audio output.
+<p>
+<dl compact><dt><b>Parameters:</b></dt><dd>
+ <table border="0" cellspacing="2" cellpadding="0">
+ <tr><td valign="top"></td><td valign="top"><em>*audiodata</em>&nbsp;</td><td>pointer to audio information structure. </td></tr>
+ <tr><td valign="top"></td><td valign="top"><em>AUDIOIN</em>&nbsp;</td><td>Audio Input Handler </td></tr>
+ <tr><td valign="top"></td><td valign="top"><em>AUDIOOUT</em>&nbsp;</td><td>Audio Output Handler</td></tr>
+ </table>
+</dl>
+<dl compact><dt><b>Returns:</b></dt><dd>Never Returns. </dd></dl>
+<dl compact><dt><b>Return values:</b></dt><dd>
+ <table border="0" cellspacing="2" cellpadding="0">
+ <tr><td valign="top"></td><td valign="top"><em>void</em>&nbsp;</td><td></td></tr>
+ </table>
+</dl>
+
+<p>
+Definition at line <a class="el" href="audio_8hcc-source.html#l00076">76</a> of file <a class="el" href="audio_8hcc-source.html">audio.hcc</a>.
+<p>
+Referenced by <a class="el" href="main_8hcc-source.html#l00051">main()</a>. </td>
+ </tr>
+</table>
+<hr size="1"><address style="align: right;"><small>Generated on Thu Dec 9 14:37:08 2004 for Graphic Equalizer 2 by&nbsp;
+<a href="http://www.doxygen.org/index.html">
+<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.3.9.1 </small></address>
+</body>
+</html>