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<h1>Drummer.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef STK_DRUMMER_H</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define STK_DRUMMER_H</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span>
<a name="l00004"></a>00004 <span class="preprocessor">#include "Instrmnt.h"</span>
<a name="l00005"></a>00005 <span class="preprocessor">#include "FileWvIn.h"</span>
<a name="l00006"></a>00006 <span class="preprocessor">#include "OnePole.h"</span>
<a name="l00007"></a>00007
<a name="l00008"></a>00008 <span class="keyword">namespace </span>stk {
<a name="l00009"></a>00009
<a name="l00010"></a>00010 <span class="comment">/***************************************************/</span>
<a name="l00025"></a>00025 <span class="comment">/***************************************************/</span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="keyword">const</span> <span class="keywordtype">int</span> DRUM_NUMWAVES = 11;
<a name="l00028"></a>00028 <span class="keyword">const</span> <span class="keywordtype">int</span> DRUM_POLYPHONY = 4;
<a name="l00029"></a>00029
<a name="l00030"></a><a class="code" href="classstk_1_1Drummer.html">00030</a> <span class="keyword">class </span><a class="code" href="classstk_1_1Drummer.html" title="STK drum sample player class.">Drummer</a> : <span class="keyword">public</span> <a class="code" href="classstk_1_1Instrmnt.html" title="STK instrument abstract base class.">Instrmnt</a>
<a name="l00031"></a>00031 {
<a name="l00032"></a>00032 <span class="keyword">public</span>:
<a name="l00034"></a>00034
<a name="l00037"></a>00037 <a class="code" href="classstk_1_1Drummer.html#af5262dd2b29ae453323c0a514d79d26a" title="Class constructor.">Drummer</a>( <span class="keywordtype">void</span> );
<a name="l00038"></a>00038
<a name="l00040"></a>00040 <a class="code" href="classstk_1_1Drummer.html#a365fb4b2c501129f2efd6edfad1f5453" title="Class destructor.">~Drummer</a>( <span class="keywordtype">void</span> );
<a name="l00041"></a>00041
<a name="l00043"></a>00043
<a name="l00049"></a>00049 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Drummer.html#a5ea03a0ef9a3db02942799b5cbca2ea2" title="Start a note with the given drum type and amplitude.">noteOn</a>( StkFloat instrument, StkFloat amplitude );
<a name="l00050"></a>00050
<a name="l00052"></a>00052 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Drummer.html#aa735313fbdf7f1201fcb167874ecc7cc" title="Stop a note with the given amplitude (speed of decay).">noteOff</a>( StkFloat amplitude );
<a name="l00053"></a>00053
<a name="l00055"></a>00055 StkFloat <a class="code" href="classstk_1_1Drummer.html#ad65c63bfad0ffac03db7f56cf706e4ba" title="Compute and return one output sample.">tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
<a name="l00056"></a>00056
<a name="l00058"></a>00058
<a name="l00065"></a>00065 <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_1Drummer.html#ad65c63bfad0ffac03db7f56cf706e4ba" 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 );
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="keyword">protected</span>:
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <a class="code" href="classstk_1_1FileWvIn.html" title="STK audio file input class.">FileWvIn</a> waves_[DRUM_POLYPHONY];
<a name="l00070"></a>00070 <a class="code" href="classstk_1_1OnePole.html" title="STK one-pole filter class.">OnePole</a> filters_[DRUM_POLYPHONY];
<a name="l00071"></a>00071 std::vector<int> soundOrder_;
<a name="l00072"></a>00072 std::vector<int> soundNumber_;
<a name="l00073"></a>00073 <span class="keywordtype">int</span> nSounding_;
<a name="l00074"></a>00074 };
<a name="l00075"></a>00075
<a name="l00076"></a><a class="code" href="classstk_1_1Drummer.html#ad65c63bfad0ffac03db7f56cf706e4ba">00076</a> <span class="keyword">inline</span> StkFloat <a class="code" href="classstk_1_1Drummer.html#ad65c63bfad0ffac03db7f56cf706e4ba" title="Compute and return one output sample.">Drummer :: tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> )
<a name="l00077"></a>00077 {
<a name="l00078"></a>00078 lastFrame_[0] = 0.0;
<a name="l00079"></a>00079 <span class="keywordflow">if</span> ( nSounding_ == 0 ) <span class="keywordflow">return</span> lastFrame_[0];
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i=0; i<DRUM_POLYPHONY; i++ ) {
<a name="l00082"></a>00082 <span class="keywordflow">if</span> ( soundOrder_[i] >= 0 ) {
<a name="l00083"></a>00083 <span class="keywordflow">if</span> ( waves_[i].isFinished() ) {
<a name="l00084"></a>00084 <span class="comment">// Re-order the list.</span>
<a name="l00085"></a>00085 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> j=0; j<DRUM_POLYPHONY; j++ ) {
<a name="l00086"></a>00086 <span class="keywordflow">if</span> ( soundOrder_[j] > soundOrder_[i] )
<a name="l00087"></a>00087 soundOrder_[j] -= 1;
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089 soundOrder_[i] = -1;
<a name="l00090"></a>00090 nSounding_--;
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092 <span class="keywordflow">else</span>
<a name="l00093"></a>00093 lastFrame_[0] += filters_[i].<a class="code" href="classstk_1_1OnePole.html#a3c83b6d43f76bec06f11caa9de76881e" title="Input one sample to the filter and return one output.">tick</a>( waves_[i].<a class="code" href="classstk_1_1Drummer.html#ad65c63bfad0ffac03db7f56cf706e4ba" title="Compute and return one output sample.">tick</a>() );
<a name="l00094"></a>00094 }
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="keywordflow">return</span> lastFrame_[0];
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099
<a name="l00100"></a><a class="code" href="classstk_1_1Drummer.html#ad186a954527a518c47467e6caaa2e2f5">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_1Drummer.html#ad65c63bfad0ffac03db7f56cf706e4ba" title="Compute and return one output sample.">Drummer :: 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 )
<a name="l00101"></a>00101 {
<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>();
<a name="l00103"></a>00103 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
<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 ) {
<a name="l00105"></a>00105 oStream_ << <span class="stringliteral">"Drummer::tick(): channel and StkFrames arguments are incompatible!"</span>;
<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 );
<a name="l00107"></a>00107 }
<a name="l00108"></a>00108 <span class="preprocessor">#endif</span>
<a name="l00109"></a>00109 <span class="preprocessor"></span>
<a name="l00110"></a>00110 StkFloat *samples = &frames[channel];
<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;
<a name="l00112"></a>00112 <span class="keywordflow">if</span> ( nChannels == 1 ) {
<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 )
<a name="l00114"></a>00114 *samples++ = <a class="code" href="classstk_1_1Drummer.html#ad65c63bfad0ffac03db7f56cf706e4ba" title="Compute and return one output sample.">tick</a>();
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116 <span class="keywordflow">else</span> {
<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 ) {
<a name="l00118"></a>00118 *samples++ = <a class="code" href="classstk_1_1Drummer.html#ad65c63bfad0ffac03db7f56cf706e4ba" title="Compute and return one output sample.">tick</a>();
<a name="l00119"></a>00119 <span class="keywordflow">for</span> ( j=1; j<nChannels; j++ )
<a name="l00120"></a>00120 *samples++ = lastFrame_[j];
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122 }
<a name="l00123"></a>00123
<a name="l00124"></a>00124 <span class="keywordflow">return</span> frames;
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126
<a name="l00127"></a>00127
<a name="l00128"></a>00128 } <span class="comment">// stk namespace</span>
<a name="l00129"></a>00129
<a name="l00130"></a>00130 <span class="preprocessor">#endif</span>
</pre></div></div>
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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>
<tr><td>©1995-2012 Perry R. Cook and Gary P. Scavone. All Rights Reserved.</td></tr>
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