ref: 7803edf0b50bd7e394b618d8eaa4fb97de600bd6
dir: /LEAF/Inc/leaf-effects.h/
/*==============================================================================
leaf-effects.h
Created: 20 Jan 2017 12:01:54pm
Author: Michael R Mulshine
==============================================================================*/
#ifndef LEAF_EFFECTS_H_INCLUDED
#define LEAF_EFFECTS_H_INCLUDED
#ifdef __cplusplus
extern "C" {
#endif
//==============================================================================
#include "leaf-global.h"
#include "leaf-math.h"
#include "leaf-analysis.h"
//==============================================================================
/* tTalkbox */
#define NUM_TALKBOX_PARAM 4
typedef struct _tTalkbox
{
float param[NUM_TALKBOX_PARAM];
int bufsize;
float* car0;
float* car1;
float* window;
float* buf0;
float* buf1;
float emphasis;
int32_t K, N, O, pos;
float wet, dry, FX;
float d0, d1, d2, d3, d4;
float u0, u1, u2, u3, u4;
} tTalkbox;
void tTalkbox_init (tTalkbox* const, int bufsize);
void tTalkbox_free (tTalkbox* const);
float tTalkbox_tick (tTalkbox* const, float synth, float voice);
void tTalkbox_update (tTalkbox* const);
void tTalkbox_suspend (tTalkbox* const);
void tTalkbox_lpcDurbin (float *r, int p, float *k, float *g);
void tTalkbox_lpc (float *buf, float *car, int32_t n, int32_t o);
void tTalkbox_setQuality (tTalkbox* const, float quality);
//==============================================================================
/* tVocoder */
#define NUM_VOCODER_PARAM 8
#define NBANDS 16
typedef struct _tVocoder
{
float param[NUM_VOCODER_PARAM];
float gain; //output level
float thru, high; //hf thru
float kout; //downsampled output
int32_t kval; //downsample counter
int32_t nbnd; //number of bands
//filter coeffs and buffers - seems it's faster to leave this global than make local copy
float f[NBANDS][13]; //[0-8][0 1 2 | 0 1 2 3 | 0 1 2 3 | val rate]
} tVocoder;
void tVocoder_init (tVocoder* const);
void tVocoder_free (tVocoder* const);
float tVocoder_tick (tVocoder* const, float synth, float voice);
void tVocoder_update (tVocoder* const);
void tVocoder_suspend (tVocoder* const);
//==============================================================================
//==============================================================================
// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
/* tSOLAD : pitch shifting algorithm that underlies tPitchShifter etc */
#define LOOPSIZE (2048*2) // (4096*2) // loop size must be power of two
#define LOOPMASK (LOOPSIZE - 1)
#define PITCHFACTORDEFAULT 1.0f
#define INITPERIOD 64.0f
#define MAXPERIOD (float)((LOOPSIZE - w->blocksize) * 0.8f)
#define MINPERIOD 8.0f
typedef struct _tSOLAD
{
uint16_t timeindex; // current reference time, write index
uint16_t blocksize; // signal input / output block size
float pitchfactor; // pitch factor between 0.25 and 4
float readlag; // read pointer's lag behind write pointer
float period; // period length in input signal
float jump; // read pointer jump length and direction
float xfadelength; // crossfade length expressed at input sample rate
float xfadevalue; // crossfade phase and value
float* delaybuf;
} tSOLAD;
void tSOLAD_init (tSOLAD* const);
void tSOLAD_free (tSOLAD* const);
// send one block of input samples, receive one block of output samples
void tSOLAD_ioSamples (tSOLAD *w, float* in, float* out, int blocksize);
// set periodicity analysis data
void tSOLAD_setPeriod (tSOLAD *w, float period);
// set pitch factor between 0.25 and 4
void tSOLAD_setPitchFactor (tSOLAD *w, float pitchfactor);
// force readpointer lag
void tSOLAD_setReadLag (tSOLAD *w, float readlag);
// reset state variables
void tSOLAD_resetState (tSOLAD *w);
// Pitch shifter
typedef struct _tPitchShifter
{
tEnvPD env;
tSNAC snac;
tSOLAD sola;
tHighpass hp;
float* inBuffer;
float* outBuffer;
int frameSize;
int bufSize;
int framesPerBuffer;
int curBlock;
int lastBlock;
int index;
uint16_t hopSize;
uint16_t windowSize;
uint8_t fba;
float pitchFactor;
float timeConstant;
float radius;
float max;
float lastmax;
float deltamax;
} tPitchShifter;
void tPitchShifter_init (tPitchShifter* const, float* in, float* out, int bufSize, int frameSize);
void tPitchShifter_free (tPitchShifter* const);
float tPitchShifter_tick (tPitchShifter* const, float sample);
float tPitchShifterToFreq_tick (tPitchShifter* const, float sample, float freq);
float tPitchShifterToFunc_tick (tPitchShifter* const, float sample, float (*fun)(float));
void tPitchShifter_ioSamples_toFreq (tPitchShifter* const, float* in, float* out, int size, float toFreq);
void tPitchShifter_ioSamples_toPeriod(tPitchShifter* const, float* in, float* out, int size, float toPeriod);
void tPitchShifter_ioSamples_toFunc (tPitchShifter* const, float* in, float* out, int size, float (*fun)(float));
void tPitchShifter_setPitchFactor (tPitchShifter* const, float pf);
void tPitchShifter_setTimeConstant (tPitchShifter* const, float tc);
void tPitchShifter_setHopSize (tPitchShifter* const, int hs);
void tPitchShifter_setWindowSize (tPitchShifter* const, int ws);
float tPitchShifter_getPeriod (tPitchShifter* const);
//==============================================================================
// Pitch shift
typedef struct _tPitchShift
{
tSOLAD sola;
tHighpass hp;
tPeriodDetection* p;
float* outBuffer;
int frameSize;
int bufSize;
int framesPerBuffer;
int curBlock;
int lastBlock;
int index;
float pitchFactor;
float timeConstant;
float radius;
} tPitchShift;
void tPitchShift_init (tPitchShift* const,tPeriodDetection* const, float* out, int bufSize);
void tPitchShift_free (tPitchShift* const);
float tPitchShift_shift (tPitchShift* const);
float tPitchShift_shiftToFunc (tPitchShift* const, float (*fun)(float));
float tPitchShift_shiftToFreq (tPitchShift* const, float freq);
void tPitchShift_setPitchFactor (tPitchShift* const, float pf);
//==============================================================================
#define FORD 7
#define FORMANT_BUFFER_SIZE 2048
typedef struct _tFormantShifter
{
int ford;
int bufsize;
float falph;
float flamb;
float* fk;
float* fb;
float* fc;
float* frb;
float* frc;
float* fsig;
float* fsmooth;
float fhp;
float flp;
float flpa;
float** fbuff;
float* ftvec;
float fmute;
float fmutealph;
unsigned int cbi;
} tFormantShifter;
void tFormantShifter_init (tFormantShifter* const, int bufsize, int order);
void tFormantShifter_free (tFormantShifter* const);
float tFormantShifter_tick (tFormantShifter* const, float input, float fwarp);
float tFormantShifter_remove (tFormantShifter* const, float input);
float tFormantShifter_add (tFormantShifter* const, float input, float fwarp);
void tFormantShifter_ioSamples (tFormantShifter* const, float* in, float* out, int size, float fwarp);
//==============================================================================
#ifdef __cplusplus
}
#endif
#endif // LEAF_EFFECTS_H_INCLUDED
//==============================================================================