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<TITLE>The Synthesis ToolKit in C++ (STK)</TITLE>
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<!-- Generated by Doxygen 1.6.2 -->
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<h1>Simple.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef STK_SIMPLE_H</span>
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<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define STK_SIMPLE_H</span>
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<a name="l00003"></a>00003 <span class="preprocessor"></span>
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<a name="l00004"></a>00004 <span class="preprocessor">#include "Instrmnt.h"</span>
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<a name="l00005"></a>00005 <span class="preprocessor">#include "ADSR.h"</span>
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<a name="l00006"></a>00006 <span class="preprocessor">#include "FileLoop.h"</span>
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<a name="l00007"></a>00007 <span class="preprocessor">#include "OnePole.h"</span>
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<a name="l00008"></a>00008 <span class="preprocessor">#include "BiQuad.h"</span>
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<a name="l00009"></a>00009 <span class="preprocessor">#include "Noise.h"</span>
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<a name="l00010"></a>00010
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<a name="l00011"></a>00011 <span class="keyword">namespace </span>stk {
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<a name="l00012"></a>00012
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<a name="l00013"></a>00013 <span class="comment">/***************************************************/</span>
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<a name="l00030"></a>00030 <span class="comment">/***************************************************/</span>
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<a name="l00031"></a>00031
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<a name="l00032"></a><a class="code" href="classstk_1_1Simple.html">00032</a> <span class="keyword">class </span><a class="code" href="classstk_1_1Simple.html" title="STK wavetable/noise instrument.">Simple</a> : <span class="keyword">public</span> <a class="code" href="classstk_1_1Instrmnt.html" title="STK instrument abstract base class.">Instrmnt</a>
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<a name="l00033"></a>00033 {
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<a name="l00034"></a>00034 <span class="keyword">public</span>:
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<a name="l00036"></a>00036
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<a name="l00039"></a>00039 <a class="code" href="classstk_1_1Simple.html#a7fae7f883b6180e7d07c9e06b62e1283" title="Class constructor.">Simple</a>( <span class="keywordtype">void</span> );
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<a name="l00040"></a>00040
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<a name="l00042"></a>00042 <a class="code" href="classstk_1_1Simple.html#a7fc1b20b362b5902d8a47ea889144601" title="Class destructor.">~Simple</a>( <span class="keywordtype">void</span> );
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<a name="l00043"></a>00043
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<a name="l00045"></a>00045 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Simple.html#a8281297483ef2363a01590722dd739d8" title="Clear internal states.">clear</a>( <span class="keywordtype">void</span> );
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<a name="l00046"></a>00046
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<a name="l00048"></a>00048 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Simple.html#aa2dcec630c97fdafb2ba75e74194540d" title="Set instrument parameters for a particular frequency.">setFrequency</a>( StkFloat frequency );
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<a name="l00049"></a>00049
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<a name="l00051"></a>00051 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Simple.html#a44650c4b65de79d4bf0b04b908c207b2" title="Start envelope toward &quot;on&quot; target.">keyOn</a>( <span class="keywordtype">void</span> );
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<a name="l00052"></a>00052
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<a name="l00054"></a>00054 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Simple.html#a4183bd057f8bf3783c8b1812f3459d32" title="Start envelope toward &quot;off&quot; target.">keyOff</a>( <span class="keywordtype">void</span> );
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<a name="l00055"></a>00055
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<a name="l00057"></a>00057 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Simple.html#aeba26edadfba0dfe0f21834bd730fdad" title="Start a note with the given frequency and amplitude.">noteOn</a>( StkFloat frequency, StkFloat amplitude );
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<a name="l00058"></a>00058
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<a name="l00060"></a>00060 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Simple.html#a6fbdaba299b3733b7e81ec4de5073350" title="Stop a note with the given amplitude (speed of decay).">noteOff</a>( StkFloat amplitude );
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<a name="l00061"></a>00061
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<a name="l00063"></a>00063 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Simple.html#acd14d5368545f5650aeebbbdad65fc52" title="Perform the control change specified by number and value (0.0 - 128.0).">controlChange</a>( <span class="keywordtype">int</span> number, StkFloat value );
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<a name="l00064"></a>00064
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<a name="l00066"></a>00066 StkFloat <a class="code" href="classstk_1_1Simple.html#aa65326847f8b693f7b5549d18df6e882" title="Compute and return one output sample.">tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
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<a name="l00067"></a>00067
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<a name="l00069"></a>00069
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<a name="l00076"></a>00076 <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1Simple.html#aa65326847f8b693f7b5549d18df6e882" title="Compute and return one output sample.">tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& frames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
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<a name="l00077"></a>00077
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<a name="l00078"></a>00078 <span class="keyword">protected</span>:
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<a name="l00079"></a>00079
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<a name="l00080"></a>00080 <a class="code" href="classstk_1_1ADSR.html" title="STK ADSR envelope class.">ADSR</a> adsr_;
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<a name="l00081"></a>00081 <a class="code" href="classstk_1_1FileLoop.html" title="STK file looping / oscillator class.">FileLoop</a> *loop_;
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<a name="l00082"></a>00082 <a class="code" href="classstk_1_1OnePole.html" title="STK one-pole filter class.">OnePole</a> filter_;
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<a name="l00083"></a>00083 <a class="code" href="classstk_1_1BiQuad.html" title="STK biquad (two-pole, two-zero) filter class.">BiQuad</a> biquad_;
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<a name="l00084"></a>00084 <a class="code" href="classstk_1_1Noise.html" title="STK noise generator.">Noise</a> noise_;
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<a name="l00085"></a>00085 StkFloat baseFrequency_;
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<a name="l00086"></a>00086 StkFloat loopGain_;
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<a name="l00087"></a>00087
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<a name="l00088"></a>00088 };
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<a name="l00089"></a>00089
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<a name="l00090"></a><a class="code" href="classstk_1_1Simple.html#aa65326847f8b693f7b5549d18df6e882">00090</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1Simple.html#aa65326847f8b693f7b5549d18df6e882" title="Compute and return one output sample.">Simple :: tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> )
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<a name="l00091"></a>00091 {
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<a name="l00092"></a>00092 lastFrame_[0] = loopGain_ * loop_-><a class="code" href="classstk_1_1FileLoop.html#a037b31918134ed1839a8b48de774ab95" title="Compute a sample frame and return the specified channel value.">tick</a>();
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<a name="l00093"></a>00093 biquad_.<a class="code" href="classstk_1_1BiQuad.html#a648086962c3cddcaa09c46a002c3e635" title="Input one sample to the filter and return a reference to one output.">tick</a>( noise_.<a class="code" href="classstk_1_1Noise.html#a8ac40f69475eb744e803d557e8438a6d" title="Compute and return one output sample.">tick</a>() );
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<a name="l00094"></a>00094 lastFrame_[0] += (1.0 - loopGain_) * biquad_.<a class="code" href="classstk_1_1BiQuad.html#a412f224363b1a222423ecf0cd7be9063" title="Return the last computed output value.">lastOut</a>();
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<a name="l00095"></a>00095 lastFrame_[0] = filter_.<a class="code" href="classstk_1_1OnePole.html#a3c83b6d43f76bec06f11caa9de76881e" title="Input one sample to the filter and return one output.">tick</a>( lastFrame_[0] );
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<a name="l00096"></a>00096 lastFrame_[0] *= adsr_.<a class="code" href="classstk_1_1ADSR.html#af2c0869f86210a55f4f668172373c975" title="Compute and return one output sample.">tick</a>();
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<a name="l00097"></a>00097 <span class="keywordflow">return</span> lastFrame_[0];
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<a name="l00098"></a>00098 }
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<a name="l00099"></a>00099
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<a name="l00100"></a><a class="code" href="classstk_1_1Simple.html#adff17b07913c312e989f1987e4fb5cc8">00100</a> <span class="keyword">inline</span> <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1Simple.html#aa65326847f8b693f7b5549d18df6e882" title="Compute and return one output sample.">Simple :: tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& frames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel )
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<a name="l00101"></a>00101 {
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<a name="l00102"></a>00102 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nChannels = lastFrame_.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>();
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<a name="l00103"></a>00103 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
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<a name="l00104"></a>00104 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( channel > frames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>() - nChannels ) {
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<a name="l00105"></a>00105 oStream_ << <span class="stringliteral">"Simple::tick(): channel and StkFrames arguments are incompatible!"</span>;
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<a name="l00106"></a>00106 <a class="code" href="classstk_1_1Stk.html#a48ac73a0d8ca28445ba1a054e1f061ff" title="Static function for error reporting and handling using c-strings.">handleError</a>( StkError::FUNCTION_ARGUMENT );
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<a name="l00107"></a>00107 }
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<a name="l00108"></a>00108 <span class="preprocessor">#endif</span>
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<a name="l00109"></a>00109 <span class="preprocessor"></span>
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<a name="l00110"></a>00110 StkFloat *samples = &frames[channel];
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<a name="l00111"></a>00111 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j, hop = frames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>() - nChannels;
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<a name="l00112"></a>00112 <span class="keywordflow">if</span> ( nChannels == 1 ) {
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<a name="l00113"></a>00113 <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<frames.<a class="code" href="classstk_1_1StkFrames.html#a05b1ab6fa750a8221a7d65c30e0cdab9" title="Return the number of sample frames represented by the data.">frames</a>(); i++, samples += hop )
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<a name="l00114"></a>00114 *samples++ = <a class="code" href="classstk_1_1Simple.html#aa65326847f8b693f7b5549d18df6e882" title="Compute and return one output sample.">tick</a>();
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<a name="l00115"></a>00115 }
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<a name="l00116"></a>00116 <span class="keywordflow">else</span> {
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<a name="l00117"></a>00117 <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<frames.<a class="code" href="classstk_1_1StkFrames.html#a05b1ab6fa750a8221a7d65c30e0cdab9" title="Return the number of sample frames represented by the data.">frames</a>(); i++, samples += hop ) {
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<a name="l00118"></a>00118 *samples++ = <a class="code" href="classstk_1_1Simple.html#aa65326847f8b693f7b5549d18df6e882" title="Compute and return one output sample.">tick</a>();
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<a name="l00119"></a>00119 <span class="keywordflow">for</span> ( j=1; j<nChannels; j++ )
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<a name="l00120"></a>00120 *samples++ = lastFrame_[j];
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<a name="l00121"></a>00121 }
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<a name="l00122"></a>00122 }
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<a name="l00123"></a>00123
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<a name="l00124"></a>00124 <span class="keywordflow">return</span> frames;
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<a name="l00125"></a>00125 }
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<a name="l00126"></a>00126
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<a name="l00127"></a>00127 } <span class="comment">// stk namespace</span>
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<a name="l00128"></a>00128
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<a name="l00129"></a>00129 <span class="preprocessor">#endif</span>
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</pre></div></div>
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<table>
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<tr><td><A HREF="http://ccrma.stanford.edu/software/stk/"><I>The Synthesis ToolKit in C++ (STK)</I></A></td></tr>
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<tr><td>©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
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