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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"><title>aflibAudioConstantSrc class Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.2.15 --><center><a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Compound Members</a> <a class="qindex" href="globals.html">File Members</a> </center><hr><h1>aflibAudioConstantSrc Class Reference</h1>Inserts a constant audio source in a chain for test purposes. <a href="#_details">More...</a><p><code>#include <<a class="el" href="aflibAudioConstantSrc_8h-source.html">aflibAudioConstantSrc.h</a>></code><p><p>Inheritance diagram for aflibAudioConstantSrc:<p><center><img src="classaflibAudioConstantSrc.png" usemap="#aflibAudioConstantSrc_map" border="0"></center><map name="aflibAudioConstantSrc_map"><area href="classaflibAudio.html" alt="aflibAudio" shape="rect" coords="74,56,212,80"><area href="classaflibChain.html" alt="aflibChain" shape="rect" coords="0,0,138,24"><area href="classaflibMemCache.html" alt="aflibMemCache" shape="rect" coords="148,0,286,24"></map><a href="classaflibAudioConstantSrc-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0><tr><td colspan=2><br><h2>Public Types</h2></td></tr><tr><td nowrap align=right valign=top>enum </td><td valign=bottom><a class="el" href="classaflibAudioConstantSrc.html#s4">waveform_type</a> { <a class="el" href="classaflibAudioConstantSrc.html#s4s0">WAVEFORM_DCLEVEL</a>, <a class="el" href="classaflibAudioConstantSrc.html#s4s1">WAVEFORM_TRIANGLE</a>, <a class="el" href="classaflibAudioConstantSrc.html#s4s2">WAVEFORM_SQUAREWAVE</a>, <a class="el" href="classaflibAudioConstantSrc.html#s4s3">WAVEFORM_SINEWAVE</a> }</td></tr><tr><td colspan=2><br><h2>Public Methods</h2></td></tr><tr><td nowrap align=right valign=top> </td><td valign=bottom><a class="el" href="classaflibAudioConstantSrc.html#a0">aflibAudioConstantSrc</a> (<a class="el" href="classaflibAudio.html">aflibAudio</a> &audio)</td></tr><tr><td> </td><td><font size=-1><em>Constructor - defaults to a DC level fullscale signal.</em> <a href="#a0">More...</a><em></em></font><br><br></td></tr><tr><td nowrap align=right valign=top> </td><td valign=bottom><a class="el" href="classaflibAudioConstantSrc.html#a1">aflibAudioConstantSrc</a> ()</td></tr><tr><td> </td><td><font size=-1><em>Constructor - defaults to a DC level fullscale signal.</em> <a href="#a1">More...</a><em></em></font><br><br></td></tr><tr><td nowrap align=right valign=top> </td><td valign=bottom><a class="el" href="classaflibAudioConstantSrc.html#a2">~aflibAudioConstantSrc</a> ()</td></tr><tr><td> </td><td><font size=-1><em>Destructor.</em> <a href="#a2">More...</a><em></em></font><br><br></td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classaflibAudioConstantSrc.html#a3">setWaveformType</a> (<a class="el" href="classaflibAudioConstantSrc.html#s4">aflibAudioConstantSrc::waveform_type</a> wave, double max_amp, double min_amp, int frequency)</td></tr><tr><td> </td><td><font size=-1><em><ul><li>Sets the type of waveform to be output.</ul></em> <a href="#a3">More...</a><em></em></font><br><br></td></tr><tr><td nowrap align=right valign=top><a class="el" href="aflib_8h.html#a33">aflibStatus</a> </td><td valign=bottom><a class="el" href="classaflibAudioConstantSrc.html#a4">compute_segment</a> (list< <a class="el" href="classaflibData.html">aflibData</a> * > &data, long long position=-1)</td></tr><tr><td> </td><td><font size=-1><em>Work function, must be implemented by derived class.</em> <a href="#a4">More...</a><em></em></font><br><br></td></tr><tr><td nowrap align=right valign=top>const char * </td><td valign=bottom><a class="el" href="classaflibAudioConstantSrc.html#a5">getName</a> () const</td></tr><tr><td> </td><td><font size=-1><em>Returns the name of the derived class.</em> <a href="#a5">More...</a><em></em></font><br><br></td></tr></table><hr><a name="_details"></a><h2>Detailed Description</h2>Inserts a constant audio source in a chain for test purposes.<p>This class allows one to insert a test signal anywhere in an audio chain. It is mainly used for debugging other audio objects that work on audio data. When it is inserted in a chain it takes on the characteristics of everything before it in the chain. For instance a parent that is outputting a 22050 sample rate mono signal will cause this object to throw away the data from the parent and instead insert a test signal that is 22050 mono.<p>One can select a DC level, triangle wave, square wave, or sine wave. One can also adjust the frequency and amplitude. <p><hr><h2>Member Enumeration Documentation</h2><a name="s4" doxytag="aflibAudioConstantSrc::waveform_type"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> enum aflibAudioConstantSrc::waveform_type </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p><dl compact><dt><b>Enumeration values:</b><dd><table border=0 cellspacing=2 cellpadding=0><tr><td valign=top><em><a name="s4s0" doxytag="WAVEFORM_DCLEVEL"></a><em>WAVEFORM_DCLEVEL</em></em> </td><td></td></tr><tr><td valign=top><em><a name="s4s1" doxytag="WAVEFORM_TRIANGLE"></a><em>WAVEFORM_TRIANGLE</em></em> </td><td></td></tr><tr><td valign=top><em><a name="s4s2" doxytag="WAVEFORM_SQUAREWAVE"></a><em>WAVEFORM_SQUAREWAVE</em></em> </td><td></td></tr><tr><td valign=top><em><a name="s4s3" doxytag="WAVEFORM_SINEWAVE"></a><em>WAVEFORM_SINEWAVE</em></em> </td><td></td></tr></table></dl> </td> </tr></table><hr><h2>Constructor & Destructor Documentation</h2><a name="a0" doxytag="aflibAudioConstantSrc::aflibAudioConstantSrc"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> aflibAudioConstantSrc::aflibAudioConstantSrc </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top"><a class="el" href="classaflibAudio.html">aflibAudio</a> & </td> <td class="mdname1" valign="top" nowrap> <em>audio</em> </td> <td class="md" valign="top">) </td> <td class="md" nowrap></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Constructor - defaults to a DC level fullscale signal.<p> </td> </tr></table><a name="a1" doxytag="aflibAudioConstantSrc::aflibAudioConstantSrc"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> aflibAudioConstantSrc::aflibAudioConstantSrc </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Constructor - defaults to a DC level fullscale signal.<p> </td> </tr></table><a name="a2" doxytag="aflibAudioConstantSrc::~aflibAudioConstantSrc"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> aflibAudioConstantSrc::~aflibAudioConstantSrc </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Destructor.<p> </td> </tr></table><hr><h2>Member Function Documentation</h2><a name="a4" doxytag="aflibAudioConstantSrc::compute_segment"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> <a class="el" href="aflib_8h.html#a33">aflibStatus</a> aflibAudioConstantSrc::compute_segment </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">list< <a class="el" href="classaflibData.html">aflibData</a> * > & </td> <td class="mdname" nowrap> <em>data</em>, </td> </tr> <tr> <td></td> <td></td> <td class="md" nowrap>long long </td> <td class="mdname" nowrap> <em>position</em> = -1</td> </tr> <tr> <td></td> <td class="md">) </td> <td class="md" colspan="2"><code> [virtual]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Work function, must be implemented by derived class.<p><p>Reimplemented from <a class="el" href="classaflibAudio.html#a12">aflibAudio</a>. </td> </tr></table><a name="a5" doxytag="aflibAudioConstantSrc::getName"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> const char* aflibAudioConstantSrc::getName </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap> const<code> [inline, virtual]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>Returns the name of the derived class.<p><p>Reimplemented from <a class="el" href="classaflibAudio.html#a11">aflibAudio</a>. </td> </tr></table><a name="a3" doxytag="aflibAudioConstantSrc::setWaveformType"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> void aflibAudioConstantSrc::setWaveformType </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top"><a class="el" href="classaflibAudioConstantSrc.html#s4">aflibAudioConstantSrc::waveform_type</a> </td> <td class="mdname" nowrap> <em>wave</em>, </td> </tr> <tr> <td></td> <td></td> <td class="md" nowrap>double </td> <td class="mdname" nowrap> <em>max_amp</em>, </td> </tr> <tr> <td></td> <td></td> <td class="md" nowrap>double </td> <td class="mdname" nowrap> <em>min_amp</em>, </td> </tr> <tr> <td></td> <td></td> <td class="md" nowrap>int </td> <td class="mdname" nowrap> <em>frequency</em></td> </tr> <tr> <td></td> <td class="md">) </td> <td class="md" colspan="2"></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p><ul><li>Sets the type of waveform to be output.</ul><p>Allow the user to select the waveform type, amplitude, and frequency. The amplitude will be the peak amplitude of the signal specified in percent. Both a max and min are required. For full scale one would use 100.0 for max and -100.0 for min. For the waveform DC level only max is used and min must be less than or equal to max. The frequency must be in Hz. </td> </tr></table><hr>The documentation for this class was generated from the following files:<ul><li><a class="el" href="aflibAudioConstantSrc_8h-source.html">aflibAudioConstantSrc.h</a><li><a class="el" href="aflibAudioConstantSrc_8cc.html">aflibAudioConstantSrc.cc</a></ul><hr><address align="right"><small>Generated on Wed May 8 20:51:09 2002 for Open Source Audio Library Project by<a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border=0 width=110 height=53></a>1.2.15 </small></address></body></html>⌨️ 快捷键说明
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