#include <stdlib.h>#include <math.h>#include "soundpipe.h"#include "CUI.h" #define max(a,b) ((a < b) ? b : a)#define min(a,b) ((a < b) ? a : b) #ifndef FAUSTFLOAT#define FAUSTFLOAT float#endif  static float faustpower2_f(float value) {	return (value * value);} typedef struct { 	float fRec0[3];	float fRec3[2];	float fRec2[2];	float fRec1[2];	float fRec4[2];	float fRec5[2];	FAUSTFLOAT fVslider0;	int fSamplingFreq;	int iConst0;	float fConst1;	float fConst2;	float fConst3;	float fConst4;	float fConst5;	float fConst6;	FAUSTFLOAT fVslider1;	FAUSTFLOAT fVslider2; } autowah; autowah* newautowah(void) {	autowah* dsp = (autowah*)malloc(sizeof(autowah));	return dsp;} void deleteautowah(autowah* dsp) {	free(dsp);} void instanceInitautowah(autowah* dsp, int samplingFreq) {	dsp->fSamplingFreq = samplingFreq;	dsp->fVslider0 = (FAUSTFLOAT)0.;	dsp->iConst0 = min(192000, max(1, dsp->fSamplingFreq));	dsp->fConst1 = (1413.72f / (float)dsp->iConst0);	dsp->fConst2 = exp((0.f - (100.f / (float)dsp->iConst0)));	dsp->fConst3 = (1.f - dsp->fConst2);	dsp->fConst4 = exp((0.f - (10.f / (float)dsp->iConst0)));	dsp->fConst5 = (1.f - dsp->fConst4);	/* C99 loop */	{		int i0;		for (i0 = 0; (i0 < 2); i0 = (i0 + 1)) {			dsp->fRec3[i0] = 0.f; 		} 	}	/* C99 loop */	{		int i1;		for (i1 = 0; (i1 < 2); i1 = (i1 + 1)) {			dsp->fRec2[i1] = 0.f; 		} 	}	dsp->fConst6 = (2827.43f / (float)dsp->iConst0);	/* C99 loop */	{		int i2;		for (i2 = 0; (i2 < 2); i2 = (i2 + 1)) {			dsp->fRec1[i2] = 0.f; 		} 	}	/* C99 loop */	{		int i3;		for (i3 = 0; (i3 < 2); i3 = (i3 + 1)) {			dsp->fRec4[i3] = 0.f; 		} 	}	dsp->fVslider1 = (FAUSTFLOAT)100.;	dsp->fVslider2 = (FAUSTFLOAT)0.1;	/* C99 loop */	{		int i4;		for (i4 = 0; (i4 < 2); i4 = (i4 + 1)) {			dsp->fRec5[i4] = 0.f; 		} 	}	/* C99 loop */	{		int i5;		for (i5 = 0; (i5 < 3); i5 = (i5 + 1)) {			dsp->fRec0[i5] = 0.f; 		} 	} } void initautowah(autowah* dsp, int samplingFreq) {	instanceInitautowah(dsp, samplingFreq);} void buildUserInterfaceautowah(autowah* dsp, UIGlue* interface) {	interface->addVerticalSlider(interface->uiInterface, "level", &dsp->fVslider2, 0.1f, 0.f, 1.f, 0.01f);	interface->addVerticalSlider(interface->uiInterface, "wah", &dsp->fVslider0, 0.f, 0.f, 1.f, 0.01f);	interface->addVerticalSlider(interface->uiInterface, "wet_dry", &dsp->fVslider1, 100.f, 0.f, 100.f, 1.f);} void computeautowah(autowah* dsp, int count, FAUSTFLOAT** inputs, FAUSTFLOAT** outputs) {	FAUSTFLOAT* input0 = inputs[0];	FAUSTFLOAT* output0 = outputs[0];	float fSlow0 = (float)dsp->fVslider0;	float fSlow1 = (float)dsp->fVslider1;	float fSlow2 = (0.01f * (fSlow1 * (float)dsp->fVslider2));	float fSlow3 = ((1.f - (0.01f * fSlow1)) + (1.f - fSlow0));	/* C99 loop */	{		int i;		for (i = 0; (i < count); i = (i + 1)) {			float fTemp0 = (float)input0[i];			float fTemp1 = fabs(fTemp0);			dsp->fRec3[0] = max(fTemp1, ((dsp->fConst4 * dsp->fRec3[1]) + (dsp->fConst5 * fTemp1)));			dsp->fRec2[0] = ((dsp->fConst2 * dsp->fRec2[1]) + (dsp->fConst3 * dsp->fRec3[0]));			float fTemp2 = min(1.f, dsp->fRec2[0]);			float fTemp3 = pow(2.f, (2.3f * fTemp2));			float fTemp4 = (1.f - (dsp->fConst1 * (fTemp3 / pow(2.f, (1.f + (2.f * (1.f - fTemp2)))))));			dsp->fRec1[0] = ((0.999f * dsp->fRec1[1]) + (0.001f * (0.f - (2.f * (fTemp4 * cos((dsp->fConst6 * fTemp3)))))));			dsp->fRec4[0] = ((0.999f * dsp->fRec4[1]) + (0.001f * faustpower2_f(fTemp4)));			dsp->fRec5[0] = ((0.999f * dsp->fRec5[1]) + (0.0001f * pow(4.f, fTemp2)));			dsp->fRec0[0] = (0.f - (((dsp->fRec1[0] * dsp->fRec0[1]) + (dsp->fRec4[0] * dsp->fRec0[2])) - (fSlow2 * (dsp->fRec5[0] * fTemp0))));			output0[i] = (FAUSTFLOAT)((fSlow0 * (dsp->fRec0[0] - dsp->fRec0[1])) + (fSlow3 * fTemp0));			dsp->fRec3[1] = dsp->fRec3[0];			dsp->fRec2[1] = dsp->fRec2[0];			dsp->fRec1[1] = dsp->fRec1[0];			dsp->fRec4[1] = dsp->fRec4[0];			dsp->fRec5[1] = dsp->fRec5[0];			dsp->fRec0[2] = dsp->fRec0[1];			dsp->fRec0[1] = dsp->fRec0[0];		} 	} } static void addVerticalSlider(void* ui_interface, const char* label, FAUSTFLOAT* zone, FAUSTFLOAT init, FAUSTFLOAT min, FAUSTFLOAT max, FAUSTFLOAT step){    USED(label, init, min, max, step);     sp_autowah *p = ui_interface;    p->args[p->argpos] = zone;    p->argpos++;} int sp_autowah_create(sp_autowah **p){    *p = malloc(sizeof(sp_autowah));    return SP_OK;} int sp_autowah_destroy(sp_autowah **p){    sp_autowah *pp = *p;    autowah *dsp = pp->faust;    deleteautowah (dsp);    free(*p);    return SP_OK;} int sp_autowah_init(sp_data *sp, sp_autowah *p){    autowah *dsp = newautowah();    UIGlue UI;    p->argpos = 0;    UI.addVerticalSlider= addVerticalSlider;    UI.uiInterface = p;    buildUserInterfaceautowah(dsp, &UI);    initautowah(dsp, sp->sr);     p->level = p->args[0];    p->wah = p->args[1];    p->mix = p->args[2];     p->faust = dsp;    return SP_OK;} int sp_autowah_compute(sp_data *sp, sp_autowah *p, SPFLOAT *in, SPFLOAT *out){    USED(sp);     autowah *dsp = p->faust;    SPFLOAT *faust_out[] = {out};    SPFLOAT *faust_in[] = {in};    computeautowah(dsp, 1, faust_in, faust_out);    return SP_OK;}