server/plugins/ML.h

   1 /*
   2         SuperCollider real time audio synthesis system
   3  Copyright (c) 2002 James McCartney. All rights reserved.
   4         http://www.audiosynth.com
   5
   6  This program is free software; you can redistribute it and/or modify
   7  it under the terms of the GNU General Public License as published by
   8  the Free Software Foundation; either version 2 of the License, or
   9  (at your option) any later version.
  10
  11  This program is distributed in the hope that it will be useful,
  12  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  GNU General Public License for more details.
  15
  16  You should have received a copy of the GNU General Public License
  17  along with this program; if not, write to the Free Software
  18  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
  19  */
  20
  21 #include "SC_PlugIn.h"
  22
  23 //global data
  24
  25 //helpful constants
  26 //#define PI 3.1415926535898f
  27 //#define TWOPI 6.28318530717952646f
  28
  29 extern InterfaceTable *ft;
  30
  31 //shared data
  32 extern int eqlbandbins[43];
  33 extern int eqlbandsizes[42];
  34 extern float contours[42][11];
  35 extern double phons[11];
  36
  37 //#include "KeyTrack.h"
  38 #include "BeatTrack.h"
  39 //#include "Loudness.h"
  40 #include "Onsets.h"
  41 //#include "MFCC.h"
  42 #include "BeatTrack2.h"
  43
  44 struct Loudness : Unit {
  45
  46         //FFT data
  47         int m_numbands;
  48         float * m_ERBbands;
  49
  50         //float m_phontotal;
  51         //final output
  52         float m_sones;
  53 };
  54
  55
  56
  57 struct KeyTrack : Unit {
  58
  59         //FFT data
  60         float * m_FFTBuf;
  61
  62         //coping with different sampling rates
  63         float m_srate;          //use as a flag to check sample rate is correct
  64         float * m_weights;  //will point to the sample rate specific data
  65         int * m_bins;
  66         float m_frameperiod;
  67
  68         //counter
  69         //uint32 m_frame;
  70
  71         //experimental transient avoidance
  72         //float m_prevphase[720]; //60*12
  73         //float m_leaknote[60];
  74
  75         float m_chroma[12];
  76         float m_key[24];
  77
  78         float m_histogram[24];   //key histogram
  79                                                          //float m_keyleak; //fade parameter for histogram
  80         //int m_triggerid;
  81
  82         int m_currentKey;
  83 };
  84
  85
  86 struct MFCC : Unit {
  87
  88         //MFCC
  89         int m_numcoefficients;
  90         float * m_mfcc;
  91         //ERB
  92         int m_numbands;
  93         float * m_bands;
  94
  95         //sampling rate specific data
  96         float m_srate;
  97         int * m_startbin;
  98         int * m_endbin;
  99         int * m_cumulindex;
 100         float * m_bandweights;
 101
 102 };
 103
 104 //////////////////////////////////////////////////////////////////////////////////////////////////
 105
 106 struct FFTAnalyser_Unit : Unit
 107 {
 108         float outval;
 109
 110         // Not always used: multipliers which convert from bin indices to freq vals, and vice versa.
 111         // See also the macros for deriving these.
 112         float m_bintofreq /* , m_freqtobin */;
 113         float m_halfnyq_over_numbinsp2;
 114 };
 115
 116 struct FFTAnalyser_OutOfPlace : FFTAnalyser_Unit
 117 {
 118         int m_numbins;
 119         float *m_tempbuf;
 120 };
 121
 122 struct SpecFlatness : FFTAnalyser_Unit
 123 {
 124         double m_oneovern;
 125 };
 126
 127 struct SpecPcile : FFTAnalyser_OutOfPlace
 128 {
 129         bool m_interpolate;
 130 };
 131
 132 struct SpecCentroid : FFTAnalyser_Unit
 133 {
 134 };
 135
 136
 137
 138 extern "C"
 139 {
 140         //required interface functions
 141         void Loudness_next(Loudness *unit, int wrongNumSamples);
 142         void Loudness_Ctor(Loudness *unit);
 143         void Loudness_Dtor(Loudness *unit);
 144
 145         void KeyTrack_next(KeyTrack *unit, int wrongNumSamples);
 146         void KeyTrack_Ctor(KeyTrack *unit);
 147         void KeyTrack_Dtor(KeyTrack *unit);
 148
 149         void MFCC_next(MFCC *unit, int wrongNumSamples);
 150         void MFCC_Ctor(MFCC *unit);
 151         void MFCC_Dtor(MFCC *unit);
 152
 153         void SpecFlatness_Ctor(SpecFlatness *unit);
 154         void SpecFlatness_next(SpecFlatness *unit, int inNumSamples);
 155         //
 156         void SpecPcile_Ctor(SpecPcile *unit);
 157         void SpecPcile_next(SpecPcile *unit, int inNumSamples);
 158         void SpecPcile_Dtor(SpecPcile *unit);
 159         //
 160         void SpecCentroid_Ctor(SpecCentroid *unit);
 161         void SpecCentroid_next(SpecCentroid *unit, int inNumSamples);
 162 }
 163