src/calf/modules_pitch.h

   1 #ifndef CALF_MODULES_PITCH_H
   2 #define CALF_MODULES_PITCH_H
   3
   4 #include <assert.h>
   5 #include <limits.h>
   6 #include "biquad.h"
   7 #include "inertia.h"
   8 #include "audio_fx.h"
   9 #include "analyzer.h"
  10 #include "giface.h"
  11 #include "metadata.h"
  12 #include "fft.h"
  13 #include <math.h>
  14 #include "bypass.h"
  15
  16 #if ENABLE_EXPERIMENTAL
  17
  18 namespace calf_plugins {
  19
  20 class pitch_audio_module: public audio_module<pitch_metadata>, public line_graph_iface
  21 {
  22 protected:
  23     typedef dsp::fft<float, 12> pfft;
  24     enum { BufferSize = 4096 };
  25     uint32_t srate;
  26     pfft transform;
  27     float inputbuf[BufferSize];
  28     pfft::complex waveform[2 * BufferSize], spectrum[2 * BufferSize], autocorr[2 * BufferSize];
  29     float magarr[BufferSize / 2];
  30     float sumsquares[BufferSize + 1], sumsquares_last;
  31     uint32_t write_ptr;
  32
  33     void recompute();
  34 public:
  35     typedef pitch_audio_module AM;
  36
  37     pitch_audio_module();
  38     ~pitch_audio_module();
  39     void params_changed();
  40     void activate();
  41     void set_sample_rate(uint32_t sr);
  42     void deactivate();
  43     uint32_t process(uint32_t offset, uint32_t numsamples, uint32_t inputs_mask, uint32_t outputs_mask);
  44
  45     bool get_graph(int index, int subindex, int phase, float *data, int points, cairo_iface *context, int *mode) const;
  46     bool get_layers(int index, int generation, unsigned int &layers) const { layers = LG_REALTIME_GRAPH; return true; }
  47 };
  48
  49 };
  50 #endif
  51
  52 #endif