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1 #ifndef __ACCESSIBLESPECTRUMANALYSER__
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2 #define __ACCESSIBLESPECTRUMANALYSER__
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3
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4 #include "IPlug_include_in_plug_hdr.h"
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5
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6 #include <cmath>
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7
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8 #include "fft.h"
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9 #include "FreqView.h"
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10
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11 #include "stk/include/SineWave.h"
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12 #include "stk/include/Envelope.h"
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13 #include "stk/include/ADSR.h"
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14
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15
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16
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17 class AccessibleSpectrumAnalyser : public IPlug
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18 {
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19 public:
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20
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21 AccessibleSpectrumAnalyser(IPlugInstanceInfo instanceInfo);
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22 ~AccessibleSpectrumAnalyser();
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23
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24 void Reset();
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25 void OnParamChange(int paramIdx);
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26
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27 void ProcessDoubleReplacing(double** inputs, double** outputs, int nFrames);
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28
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29 inline WDL_FFT_REAL magnitude(const WDL_FFT_COMPLEX & c) const
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30 {
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31 return 2 * sqrt(WDL_FFT_REAL(c.re * c.re + c.im * c.im)) / mNormFactor;// kFFTbufSize if rect window ;
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32 //return 2 * sqrt(WDL_FFT_REAL(c.re * c.re + c.im * c.im)) / kFFTbufSize ; //if rect window ;
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33 }
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34
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35 /* for dry/wet mix */
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36 inline double mix(double dry, double wet) const
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37 {
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38 return dry * mDry + wet * mWet;
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39 }
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40
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41 inline static double midi2Freq(int note)
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42 {
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43 return 440. * pow(2., (note - 69.) / 12.);
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44 }
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45
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46 inline double calculateSelectionEndFromView()
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47 {
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48 return BOUNDED(mFreqView->getSelectionStart() + mFreqView->getSelectionSize(),
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49 mFreqView->getSelectionStart()+kMinSelectionSize,
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50 GetSampleRate()/2);
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51 }
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52
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53 inline bool binWithinSelection(int i) const
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54 {
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55 double binHz = i * mBinSizeHz;
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56
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57 return ( binHz > mFreqView->getSelectionStart() && binHz <mSelectionEnd);
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58 }
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59
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60 void addClippingSonification(double** inputs, double** outputs, int nFrames);
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61
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62 private:
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63
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64 static const int kFFTbufSize = 2048;
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65 static const double k2pi;
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66 static const IColor kBgColor;
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67 static const double kClippingCeilingSnap;
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68 static const double kMinSelectionSize;
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69
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70
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71 WDL_FFT_COMPLEX mFFTbuffer[kFFTbufSize];
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72 WDL_FFT_COMPLEX sortedbuffer[kFFTbufSize];
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73 WDL_FFT_COMPLEX unsortedbuffer[kFFTbufSize];
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74 int mFFTBufferIndx;
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75
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76 FreqView* mFreqView;
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77
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78 std::vector<float> mHannTable;
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79 double mNormFactor;
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80
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81 double mBinSizeHz;
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82
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83 double mDry;
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84 double mWet;
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85 double mSelectionEnd;
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86 double mThreshold;
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87
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88
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89 struct Sonification
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90 {
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91 /* the sine wave that is played */
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92 stk::SineWave ugen;
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93
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94 /* envelope of the sine wave */
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95 stk::ADSR envelope;
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96
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97 struct Panning
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98 {
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99 double left;
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100 double right;
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101
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102 const double coeff;
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103
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104 Panning(): coeff(std::sqrt(2)/2) {}
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105
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106 /* position ranges from 0 to 1 */
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107 void calculatePanningCoeff(double position)
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108 {
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109 /* map [0,1] to [-pi/4, pi/4] radians */
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110 double theta = ((position*2)-1) * (PI/4);
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111
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112 /* calculate left and right amplitudes */
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113 left = coeff * (std::cos(theta) - std::sin(theta));
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114 right = coeff * (std::cos(theta) + std::sin(theta));
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115
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116 }
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117
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118 } panning;
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119
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120 /* resets all the ugens. When srate is less than 0, type and ugen freq are
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121 not affected by resetas well as sample rate.
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122 */
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123 void reset(double srate = -1.0);
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124
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125
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126 } mSonification;
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127
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128 };
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129
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130 #endif
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