ref: bc99f48aca15efd07cb81853172b95e83076314f
dir: /LEAF/Inc/leaf-envelopes.h/
/*
==============================================================================
leaf-envelopes.h
Created: 20 Jan 2017 12:02:17pm
Author: Michael R Mulshine
==============================================================================
*/
#ifndef LEAF_ENVELOPES_H_INCLUDED
#define LEAF_ENVELOPES_H_INCLUDED
#ifdef __cplusplus
extern "C" {
#endif
// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
#include "leaf-math.h"
#include "leaf-filters.h"
#include "leaf-delay.h"
// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
/* Attack-Decay envelope */
typedef struct _tEnvelope {
const float *exp_buff;
const float *inc_buff;
uint32_t buff_size;
float next;
float attackInc, decayInc, rampInc;
oBool inAttack, inDecay, inRamp;
oBool loop;
float gain, rampPeak;
float attackPhase, decayPhase, rampPhase;
} _tEnvelope;
typedef _tEnvelope* tEnvelope;
void tEnvelope_init (tEnvelope* const, float attack, float decay, oBool loop);
void tEnvelope_free (tEnvelope* const);
float tEnvelope_tick (tEnvelope* const);
void tEnvelope_setAttack (tEnvelope* const, float attack);
void tEnvelope_setDecay (tEnvelope* const, float decay);
void tEnvelope_loop (tEnvelope* const, oBool loop);
void tEnvelope_on (tEnvelope* const, float velocity);
// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
/* ADSR */
typedef struct _tADSR
{
const float *exp_buff;
const float *inc_buff;
uint32_t buff_size;
float next;
float attackInc, decayInc, releaseInc, rampInc;
oBool inAttack, inDecay, inSustain, inRelease, inRamp;
float sustain, gain, rampPeak, releasePeak;
float attackPhase, decayPhase, releasePhase, rampPhase;
} _tADSR;
typedef _tADSR* tADSR;
void tADSR_init (tADSR* const, float attack, float decay, float sustain, float release);
void tADSR_free (tADSR* const);
float tADSR_tick (tADSR* const);
void tADSR_setAttack (tADSR* const, float attack);
void tADSR_setDecay (tADSR* const, float decay);
void tADSR_setSustain(tADSR* const, float sustain);
void tADSR_setRelease(tADSR* const, float release);
void tADSR_on (tADSR* const, float velocity);
void tADSR_off (tADSR* const);
// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
/* Ramp */
typedef struct _tRamp {
float inc;
float inv_sr_ms;
float minimum_time;
float curr,dest;
float time;
int samples_per_tick;
} _tRamp;
typedef _tRamp* tRamp;
void tRamp_init (tRamp* const, float time, int samplesPerTick);
void tRamp_free (tRamp* const);
float tRamp_tick (tRamp* const);
float tRamp_sample (tRamp* const);
void tRamp_setTime (tRamp* const, float time);
void tRamp_setDest (tRamp* const, float dest);
void tRamp_setVal (tRamp* const, float val);
// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
/* Exponential Smoother */
typedef struct _tExpSmooth {
float factor, oneminusfactor;
float curr,dest;
} _tExpSmooth;
typedef _tExpSmooth* tExpSmooth;
void tExpSmooth_init (tExpSmooth* const, float val, float factor);
void tExpSmooth_free (tExpSmooth* const);
float tExpSmooth_tick (tExpSmooth* const);
float tExpSmooth_sample (tExpSmooth* const);
void tExpSmooth_setFactor (tExpSmooth* const, float factor);
void tExpSmooth_setDest (tExpSmooth* const, float dest);
void tExpSmooth_setVal (tExpSmooth* const, float val);
#ifdef __cplusplus
}
#endif
#endif // LEAF_ENVELOPES_H_INCLUDED