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<div class="headertitle"><div class="title">Oscillator.h</div></div>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> ==============================================================================</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> </span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> This file is part of the iPlug 2 library. Copyright (C) the iPlug 2 developers. </span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> </span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> See LICENSE.txt for more info.</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> </span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> ==============================================================================</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment">*/</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include "<a class="code" href="_i_plug_platform_8h.html">IPlugPlatform.h</a>"</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> </div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span>BEGIN_IPLUG_NAMESPACE</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> </div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"><a class="line" href="class_i_oscillator.html"> 18</a></span><span class="keyword">class </span><a class="code hl_class" href="class_i_oscillator.html">IOscillator</a></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span>{</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> <a class="code hl_class" href="class_i_oscillator.html">IOscillator</a>(<span class="keywordtype">double</span> startPhase = 0., <span class="keywordtype">double</span> startFreq = 1.)</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> : mStartPhase(startPhase)</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> {</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> SetFreqCPS(startFreq);</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> }</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">virtual</span> <span class="keyword">inline</span> T Process(<span class="keywordtype">double</span> freqHz) = 0;</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> SetFreqCPS(<span class="keywordtype">double</span> freqHz)</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> {</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> mPhaseIncr = (1./mSampleRate) * freqHz;</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> }</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <span class="keywordtype">void</span> SetSampleRate(<span class="keywordtype">double</span> sampleRate)</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> {</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> mSampleRate = sampleRate;</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> }</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> </div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <span class="keywordtype">void</span> Reset()</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> {</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> mPhase = mStartPhase;</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> }</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keywordtype">void</span> SetPhase(<span class="keywordtype">double</span> phase)</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> {</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> mPhase = phase;</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> }</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> </div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span><span class="keyword">protected</span>:</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keywordtype">double</span> mPhase = 0.; <span class="comment">// float phase (goes between 0. and 1.)</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="keywordtype">double</span> mPhaseIncr = 0.; <span class="comment">// how much to add to the phase on each T</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keywordtype">double</span> mSampleRate = 44100.;</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="keywordtype">double</span> mStartPhase;</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span>};</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"><a class="line" href="class_sin_oscillator.html"> 57</a></span><span class="keyword">class </span><a class="code hl_class" href="class_sin_oscillator.html">SinOscillator</a> : <span class="keyword">public</span> <a class="code hl_class" href="class_i_oscillator.html">IOscillator</a><T></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span>{</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <a class="code hl_class" href="class_sin_oscillator.html">SinOscillator</a>(<span class="keywordtype">double</span> startPhase = 0., <span class="keywordtype">double</span> startFreq = 1.)</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> : <a class="code hl_class" href="class_i_oscillator.html">IOscillator<T></a>(startPhase, startFreq)</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> {</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> }</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> </div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="keyword">inline</span> T Process()</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> {</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <a class="code hl_class" href="class_i_oscillator.html">IOscillator<T>::mPhase</a> = <a class="code hl_class" href="class_i_oscillator.html">IOscillator<T>::mPhase</a> + <a class="code hl_class" href="class_i_oscillator.html">IOscillator<T>::mPhaseIncr</a>;</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keywordflow">return</span> std::sin(<a class="code hl_class" href="class_i_oscillator.html">IOscillator<T>::mPhase</a> * PI * 2.);</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> }</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="keyword">inline</span> T Process(<span class="keywordtype">double</span> freqHz)<span class="keyword"> override</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <a class="code hl_class" href="class_i_oscillator.html">IOscillator<T>::SetFreqCPS</a>(freqHz);</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <a class="code hl_class" href="class_i_oscillator.html">IOscillator<T>::mPhase</a> = <a class="code hl_class" href="class_i_oscillator.html">IOscillator<T>::mPhase</a> + <a class="code hl_class" href="class_i_oscillator.html">IOscillator<T>::mPhaseIncr</a>;</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordflow">return</span> std::sin(<a class="code hl_class" href="class_i_oscillator.html">IOscillator<T>::mPhase</a> * PI * 2.);</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> }</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span>};</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> </div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span><span class="comment">/*</span></div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span><span class="comment"> FastSinOscillator - fast sinusoidal oscillator / table look up, based on an approach and code used by Miller Puckette in Pure Data, originally by Robert Höldrich</span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span><span class="comment"></span> </div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="comment"> From some correspondence with M.S.P...</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span><span class="comment"></span> </div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span><span class="comment"> The basic idea is this: if you have a double precision floating point number</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span><span class="comment"> between -2^19 (-524288) and +2^19 (+524288), and you want the fractional part as an</span></div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span><span class="comment"> integer, proceed as follows:</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span><span class="comment"></span> </div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span><span class="comment"> Add 3*2^19 (1572864) to it. The sum will be between 2^20 (1048576) and 2^21 (2097152) and so, in the usual</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span><span class="comment"> double precision format, the units bit will be the LSB of the higher-order</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span><span class="comment"> 32 bits, and the fractional part will be neatly represented as an unsigned</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span><span class="comment"> fixed-point number between 0 and 2^32-1.</span></div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="comment"></span> </div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span><span class="comment"> You can then use a C union to read these lower 32 bits as an integer. Or, if</span></div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span><span class="comment"> you want to access then as a floating-point number without having to use</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span><span class="comment"> fix-to-float conversion, just bash the upper 32 bits to their original</span></div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span><span class="comment"> state for representing 3*2^19. So far this is what's going on in the wrap~</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span><span class="comment"> and phasor~ objects in Pd.</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span><span class="comment"></span> </div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span><span class="comment"> The objects that do interpolating table lookup (e.g., cos~) take this one step</span></div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span><span class="comment"> further. Here you end up with a number (now supposing it to be between</span></div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span><span class="comment"> -2^10 and +2^10). Multiply by 2^9 (the size of the table) so that the</span></div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span><span class="comment"> 9-bit table address is in the 9 lowest bits of the upper 32 bit 'word', and</span></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span><span class="comment"> the fractional part is in the lower 32 bits as before. Grab the address as</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span><span class="comment"> an integer (masking to get just the 9 bits we want).</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span><span class="comment"></span> </div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span><span class="comment"> The you need to re-convert the fractional address into floating-point format</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span><span class="comment"> so you can use it to interpolate. Just bash the upper 32 bits with the</span></div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span><span class="comment"> original value for 3*2^19, and the result will be a 64-bit floating-point number</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span><span class="comment"> between 3*2^19 and 3*2^19+1. Subtracting 3*2^19 from this gives us a floating-</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span><span class="comment"> point representation of the fractional part.</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span><span class="comment"> */</span></div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> </div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span><span class="preprocessor">#define UNITBIT32 1572864. </span><span class="comment">/* 3*2^19; bit 32 has place value 1 */</span><span class="preprocessor"></span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span><span class="preprocessor">#define HIOFFSET 1</span></div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span><span class="preprocessor">#define LOWOFFSET 0</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> </div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span><span class="preprocessor">#ifdef _MSC_VER</span></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span><span class="preprocessor">#define ALIGN16 __declspec(align(16))</span></div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span><span class="preprocessor">#define ALIGNED(x)</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span><span class="preprocessor">#else</span></div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span><span class="preprocessor">#define ALIGN16 alignas(16)</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span><span class="preprocessor">#define ALIGNED(x) __attribute__ ((aligned (x)))</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> </div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span><span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"><a class="line" href="class_fast_sin_oscillator.html"> 126</a></span><span class="keyword">class </span><a class="code hl_class" href="class_fast_sin_oscillator.html">FastSinOscillator</a> : <span class="keyword">public</span> <a class="code hl_class" href="class_i_oscillator.html">IOscillator</a><T></div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span>{</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="keyword">union </span>tabfudge</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> {</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keywordtype">double</span> d;</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <span class="keywordtype">int</span> i[2];</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> } ALIGNED(8);</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> </div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <a class="code hl_class" href="class_fast_sin_oscillator.html">FastSinOscillator</a>(<span class="keywordtype">double</span> startPhase = 0., <span class="keywordtype">double</span> startFreq = 1.)</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> : <a class="code hl_class" href="class_i_oscillator.html">IOscillator<T></a>(startPhase * tableSizeM1, startFreq)</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> {</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> }</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <span class="keyword">inline</span> T Process()</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> {</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> T output = 0.;</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> ProcessBlock(&output, 1);</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> </div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">return</span> output;</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> }</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="keyword">inline</span> T Process(<span class="keywordtype">double</span> freqCPS)<span class="keyword"> override</span></div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <a class="code hl_class" href="class_i_oscillator.html">IOscillator<T>::SetFreqCPS</a>(freqCPS);</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> </div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> T output = 0.;</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> ProcessBlock(&output, 1);</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> </div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> <span class="keywordflow">return</span> output;</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> }</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> </div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> <span class="keyword">static</span> <span class="keyword">inline</span> T Lookup(<span class="keywordtype">double</span> phaseRadians)</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> {</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <span class="keywordtype">double</span> tPhase = phaseRadians / (PI * 2.) * tableSizeM1;</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> </div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> tPhase += (double) UNITBIT32;</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> </div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> <span class="keyword">union </span>tabfudge tf;</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> tf.d = UNITBIT32;</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> <span class="keyword">const</span> <span class="keywordtype">int</span> normhipart = tf.i[HIOFFSET];</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> tf.d = tPhase;</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> <span class="keyword">const</span> T* addr = mLUT + (tf.i[HIOFFSET] & tableSizeM1);</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> tf.i[HIOFFSET] = normhipart;</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> <span class="keyword">const</span> <span class="keywordtype">double</span> frac = tf.d - UNITBIT32;</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <span class="keyword">const</span> T f1 = addr[0];</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> <span class="keyword">const</span> T f2 = addr[1];</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> <span class="keywordflow">return</span> f1 + frac * (f2 - f1);</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> }</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> </div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> <span class="keywordtype">void</span> ProcessBlock(T* pOutput, <span class="keywordtype">int</span> nFrames)</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> {</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <span class="keywordtype">double</span> phase = <a class="code hl_class" href="class_i_oscillator.html">IOscillator<T>::mPhase</a> + (double) UNITBIT32;</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> <span class="keyword">const</span> <span class="keywordtype">double</span> phaseIncr = <a class="code hl_class" href="class_i_oscillator.html">IOscillator<T>::mPhaseIncr</a> * tableSize;</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> </div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> <span class="keyword">union </span>tabfudge tf;</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> tf.d = UNITBIT32;</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> <span class="keyword">const</span> <span class="keywordtype">int</span> normhipart = tf.i[HIOFFSET];</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> </div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span> s = 0; s < nFrames; s++)</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> {</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> tf.d = phase;</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> phase += phaseIncr;</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> <span class="keyword">const</span> T* addr = mLUT + (tf.i[HIOFFSET] & tableSizeM1); <span class="comment">// Obtain the integer portion</span></div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> tf.i[HIOFFSET] = normhipart; <span class="comment">// Force the double to wrap.</span></div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> <span class="keyword">const</span> <span class="keywordtype">double</span> frac = tf.d - UNITBIT32;</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> <span class="keyword">const</span> T f1 = addr[0];</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> <span class="keyword">const</span> T f2 = addr[1];</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> mLastOutput = pOutput[s] = T(f1 + frac * (f2 - f1));</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> }</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> </div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> <span class="comment">// Restore mPhase</span></div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> tf.d = UNITBIT32 * tableSize;</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> <span class="keyword">const</span> <span class="keywordtype">int</span> normhipart2 = tf.i[HIOFFSET];</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> tf.d = phase + (UNITBIT32 * tableSize - UNITBIT32); <span class="comment">// Remove the offset we introduced at the start of UNITBIT32.</span></div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> tf.i[HIOFFSET] = normhipart2;</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> <a class="code hl_class" href="class_i_oscillator.html">IOscillator<T>::mPhase</a> = tf.d - UNITBIT32 * tableSize;</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> }</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> </div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> T mLastOutput = 0.;</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> tableSize = 512; <span class="comment">// 2^9</span></div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> tableSizeM1 = 511; <span class="comment">// 2^9 -1</span></div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> <span class="keyword">static</span> <span class="keyword">const</span> T mLUT[513];</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span>} ALIGNED(8);</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> </div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span><span class="preprocessor">#include "Oscillator_table.h"</span></div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> </div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span>END_IPLUG_NAMESPACE</div>
<div class="ttc" id="a_i_plug_platform_8h_html"><div class="ttname"><a href="_i_plug_platform_8h.html">IPlugPlatform.h</a></div><div class="ttdoc">Include to get consistently named preprocessor macros for different platforms and logging functionali...</div></div>
<div class="ttc" id="aclass_fast_sin_oscillator_html"><div class="ttname"><a href="class_fast_sin_oscillator.html">FastSinOscillator</a></div><div class="ttdef"><b>Definition:</b> <a href="_oscillator_8h_source.html#l00126">Oscillator.h:127</a></div></div>
<div class="ttc" id="aclass_i_oscillator_html"><div class="ttname"><a href="class_i_oscillator.html">IOscillator</a></div><div class="ttdef"><b>Definition:</b> <a href="_oscillator_8h_source.html#l00018">Oscillator.h:19</a></div></div>
<div class="ttc" id="aclass_sin_oscillator_html"><div class="ttname"><a href="class_sin_oscillator.html">SinOscillator</a></div><div class="ttdef"><b>Definition:</b> <a href="_oscillator_8h_source.html#l00057">Oscillator.h:58</a></div></div>
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