/* ========================================
 *  kPlateD - kPlateD.h
 *  Copyright (c) airwindows, Airwindows uses the MIT license
 * ======================================== */

#include "kPlateD.h"

#ifdef SHR3D_SFX_CORE_AIRWINDOWS

namespace airwinconsolidated::kPlateD {

void kPlateD::processBlock(float **inputs, float **outputs, int sampleFrames) 
{
    float* in1  =  inputs[0];
    float* in2  =  inputs[1];
    float* out1 = outputs[0];
    float* out2 = outputs[1];

	double overallscale = 1.0;
	overallscale /= 44100.0;
	overallscale *= getSampleRate();
	int cycleEnd = floor(overallscale);
	if (cycleEnd < 1) cycleEnd = 1;
	if (cycleEnd > 4) cycleEnd = 4;
	//this is going to be 2 for 88.1 or 96k, 3 for silly people, 4 for 176 or 192k
	if (cycle > cycleEnd-1) cycle = cycleEnd-1; //sanity check
	
	double downRate = getSampleRate()/cycleEnd;
	//we now shift gears between 44.1k and 48k so our tone is the same, slight changes in delay times
	
	double inputPad = A;
	double regen = (B*0.425)+0.16;
	regen = (regen*0.0001)+0.00024;
	double iirAmount = (C*0.3)+0.04;
	iirAmount = (iirAmount*1000.0)/downRate;
	double earlyVolume = pow(D,2)*0.5; //predelay to a half-second
	int adjPredelay = (downRate * earlyVolume);
	double wet = E*2.0;
	double dry = 2.0 - wet;
	if (wet > 1.0) wet = 1.0;
	if (wet < 0.0) wet = 0.0;
	if (dry > 1.0) dry = 1.0;
	if (dry < 0.0) dry = 0.0;
	//this reverb makes 50% full dry AND full wet, not crossfaded.
	//that's so it can be on submixes without cutting back dry channel when adjusted:
	//unless you go super heavy, you are only adjusting the added verb loudness.
	
	fixA[fix_freq] = 20.0/downRate;
	fixA[fix_reso] = 0.0018769;
	fixD[fix_freq] = 14.0/downRate;
	fixD[fix_reso] = 0.0024964;
	fixB[fix_freq] = (fixA[fix_freq] + fixA[fix_freq] + fixD[fix_freq]) / 3.0;
	fixB[fix_reso] = 0.0020834;	
	fixC[fix_freq] = (fixA[fix_freq] + fixD[fix_freq] + fixD[fix_freq]) / 3.0;
	fixC[fix_reso] = 0.0022899;
	
	double K = tan(M_PI * fixA[fix_freq]);
	double norm = 1.0 / (1.0 + K / fixA[fix_reso] + K * K);
	fixA[fix_a0] = K / fixA[fix_reso] * norm;
	fixA[fix_a1] = 0.0;
	fixA[fix_a2] = -fixA[fix_a0];
	fixA[fix_b1] = 2.0 * (K * K - 1.0) * norm;
	fixA[fix_b2] = (1.0 - K / fixA[fix_reso] + K * K) * norm;
	//stereo biquad bandpasses we can put into the reverb matrix
	K = tan(M_PI * fixB[fix_freq]);
	norm = 1.0 / (1.0 + K / fixB[fix_reso] + K * K);
	fixB[fix_a0] = K / fixB[fix_reso] * norm;
	fixB[fix_a1] = 0.0;
	fixB[fix_a2] = -fixB[fix_a0];
	fixB[fix_b1] = 2.0 * (K * K - 1.0) * norm;
	fixB[fix_b2] = (1.0 - K / fixB[fix_reso] + K * K) * norm;
	//stereo biquad bandpasses we can put into the reverb matrix
	K = tan(M_PI * fixC[fix_freq]);
	norm = 1.0 / (1.0 + K / fixC[fix_reso] + K * K);
	fixC[fix_a0] = K / fixC[fix_reso] * norm;
	fixC[fix_a1] = 0.0;
	fixC[fix_a2] = -fixC[fix_a0];
	fixC[fix_b1] = 2.0 * (K * K - 1.0) * norm;
	fixC[fix_b2] = (1.0 - K / fixC[fix_reso] + K * K) * norm;
	//stereo biquad bandpasses we can put into the reverb matrix
	K = tan(M_PI * fixD[fix_freq]);
	norm = 1.0 / (1.0 + K / fixD[fix_reso] + K * K);
	fixD[fix_a0] = K / fixD[fix_reso] * norm;
	fixD[fix_a1] = 0.0;
	fixD[fix_a2] = -fixD[fix_a0];
	fixD[fix_b1] = 2.0 * (K * K - 1.0) * norm;
	fixD[fix_b2] = (1.0 - K / fixD[fix_reso] + K * K) * norm;
	//stereo biquad bandpasses we can put into the reverb matrix
	
    while (--sampleFrames >= 0)
    {
		double inputSampleL = *in1;
		double inputSampleR = *in2;
		if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
		if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
		double drySampleL = inputSampleL;
		double drySampleR = inputSampleR;
		
		cycle++;
		if (cycle == cycleEnd) { //hit the end point and we do a reverb sample
			if (inputPad < 1.0) {
				inputSampleL *= inputPad;
				inputSampleR *= inputPad;
			}
			double outSample;
			outSample = (inputSampleL + prevInDL)*0.5;
			prevInDL = inputSampleL; inputSampleL = outSample;
			outSample = (inputSampleR + prevInDR)*0.5;
			prevInDR = inputSampleR; inputSampleR = outSample;
			//10k filter on input
			
			if (inputSampleL > 1.57079633) inputSampleL = 1.57079633;
			if (inputSampleL < -1.57079633) inputSampleL = -1.57079633;
			if (inputSampleR > 1.57079633) inputSampleR = 1.57079633;
			if (inputSampleR < -1.57079633) inputSampleR = -1.57079633;
			inputSampleL = sin(inputSampleL);
			inputSampleR = sin(inputSampleR);
			//amplitude aspect
			
			iirAL = (iirAL * (1.0 - iirAmount)) + (inputSampleL * iirAmount);
			inputSampleL = inputSampleL - iirAL;
			iirAR = (iirAR * (1.0 - iirAmount)) + (inputSampleR * iirAmount);
			inputSampleR = inputSampleR - iirAR;
			//600hz highpass on input
			
			inputSampleL *= 0.5; inputSampleR *= 0.5;
			if (gainIn < 0.0078125) gainIn = 0.0078125; if (gainIn > 1.0) gainIn = 1.0;
			//gain of 1,0 gives you a super-clean one, gain of 2 is obviously compressing
			//smaller number is maximum clamping, if too small it'll take a while to bounce back
			inputSampleL *= gainIn; inputSampleR *= gainIn;
			gainIn += sin((fabs(inputSampleL*4)>1)?4:fabs(inputSampleL*4))*pow(inputSampleL,4);
			gainIn += sin((fabs(inputSampleR*4)>1)?4:fabs(inputSampleR*4))*pow(inputSampleR,4);
			//4.71239 radians sined will turn to -1 which is the maximum gain reduction speed
			//inputSampleL *= 2.0; inputSampleR *= 2.0;
			//curve! To get a compressed effect that matches a certain other plugin
			//that is too overprocessed for its own good :)
			
			iirBL = (iirBL * (1.0 - iirAmount)) + (inputSampleL * iirAmount);
			inputSampleL = inputSampleL - iirBL;
			iirBR = (iirBR * (1.0 - iirAmount)) + (inputSampleR * iirAmount);
			inputSampleR = inputSampleR - iirBR;
			//600hz highpass on input
			
			outSample = (inputSampleL + prevInEL)*0.5;
			prevInEL = inputSampleL; inputSampleL = outSample;
			outSample = (inputSampleR + prevInER)*0.5;
			prevInER = inputSampleR; inputSampleR = outSample;
			//10k filter on input
			
			//begin allpasses
			double oeAL = inputSampleL - (eAL[(earlyAL+1)-((earlyAL+1 > earlyA)?earlyA+1:0)]*0.5);
			double oeBL = inputSampleL - (eBL[(earlyBL+1)-((earlyBL+1 > earlyB)?earlyB+1:0)]*0.5);
			double oeCL = inputSampleL - (eCL[(earlyCL+1)-((earlyCL+1 > earlyC)?earlyC+1:0)]*0.5);
			double oeCR = inputSampleR - (eCR[(earlyCR+1)-((earlyCR+1 > earlyC)?earlyC+1:0)]*0.5);
			double oeFR = inputSampleR - (eFR[(earlyFR+1)-((earlyFR+1 > earlyF)?earlyF+1:0)]*0.5);
			double oeIR = inputSampleR - (eIR[(earlyIR+1)-((earlyIR+1 > earlyI)?earlyI+1:0)]*0.5);
			
			eAL[earlyAL] = oeAL; oeAL *= 0.5;
			eBL[earlyBL] = oeBL; oeBL *= 0.5;
			eCL[earlyCL] = oeCL; oeCL *= 0.5;
			eCR[earlyCR] = oeCR; oeCR *= 0.5;
			eFR[earlyFR] = oeFR; oeFR *= 0.5;
			eIR[earlyIR] = oeIR; oeIR *= 0.5;
			
			earlyAL++; if (earlyAL < 0 || earlyAL > earlyA) earlyAL = 0;
			earlyBL++; if (earlyBL < 0 || earlyBL > earlyB) earlyBL = 0;
			earlyCL++; if (earlyCL < 0 || earlyCL > earlyC) earlyCL = 0;
			earlyCR++; if (earlyCR < 0 || earlyCR > earlyC) earlyCR = 0;
			earlyFR++; if (earlyFR < 0 || earlyFR > earlyF) earlyFR = 0;
			earlyIR++; if (earlyIR < 0 || earlyIR > earlyI) earlyIR = 0;
			
			oeAL += eAL[earlyAL-((earlyAL > earlyA)?earlyA+1:0)];
			oeBL += eBL[earlyBL-((earlyBL > earlyB)?earlyB+1:0)];
			oeCL += eCL[earlyCL-((earlyCL > earlyC)?earlyC+1:0)];
			oeCR += eCR[earlyCR-((earlyCR > earlyC)?earlyC+1:0)];
			oeFR += eFR[earlyFR-((earlyFR > earlyF)?earlyF+1:0)];
			oeIR += eIR[earlyIR-((earlyIR > earlyI)?earlyI+1:0)];
			
			double oeDL = ((oeBL+oeCL)-oeAL) - (eDL[(earlyDL+1)-((earlyDL+1 > earlyD)?earlyD+1:0)]*0.5);
			double oeEL = ((oeAL+oeCL)-oeBL) - (eEL[(earlyEL+1)-((earlyEL+1 > earlyE)?earlyE+1:0)]*0.5);
			double oeFL = ((oeAL+oeBL)-oeCL) - (eFL[(earlyFL+1)-((earlyFL+1 > earlyF)?earlyF+1:0)]*0.5);
			double oeBR = ((oeFR+oeIR)-oeCR) - (eBR[(earlyBR+1)-((earlyBR+1 > earlyB)?earlyB+1:0)]*0.5);
			double oeER = ((oeCR+oeIR)-oeFR) - (eER[(earlyER+1)-((earlyER+1 > earlyE)?earlyE+1:0)]*0.5);
			double oeHR = ((oeCR+oeFR)-oeIR) - (eHR[(earlyHR+1)-((earlyHR+1 > earlyH)?earlyH+1:0)]*0.5);
			
			eDL[earlyDL] = oeDL; oeDL *= 0.5;
			eEL[earlyEL] = oeEL; oeEL *= 0.5;
			eFL[earlyFL] = oeFL; oeFL *= 0.5;
			eBR[earlyBR] = oeBR; oeBR *= 0.5;
			eER[earlyER] = oeER; oeER *= 0.5;
			eHR[earlyHR] = oeHR; oeHR *= 0.5;
			
			earlyDL++; if (earlyDL < 0 || earlyDL > earlyD) earlyDL = 0;
			earlyEL++; if (earlyEL < 0 || earlyEL > earlyE) earlyEL = 0;
			earlyFL++; if (earlyFL < 0 || earlyFL > earlyF) earlyFL = 0;
			earlyBR++; if (earlyBR < 0 || earlyBR > earlyB) earlyBR = 0;
			earlyER++; if (earlyER < 0 || earlyER > earlyE) earlyER = 0;
			earlyHR++; if (earlyHR < 0 || earlyHR > earlyH) earlyHR = 0;
			
			oeDL += eDL[earlyDL-((earlyDL > earlyD)?earlyD+1:0)];
			oeEL += eEL[earlyEL-((earlyEL > earlyE)?earlyE+1:0)];
			oeFL += eFL[earlyFL-((earlyFL > earlyF)?earlyF+1:0)];
			oeBR += eBR[earlyBR-((earlyBR > earlyB)?earlyB+1:0)];
			oeER += eER[earlyER-((earlyER > earlyE)?earlyE+1:0)];
			oeHR += eHR[earlyHR-((earlyHR > earlyH)?earlyH+1:0)];
			
			double oeGL = ((oeEL + oeFL) - oeDL) - (eGL[(earlyGL+1)-((earlyGL+1 > earlyG)?earlyG+1:0)]*0.5);
			double oeHL = ((oeDL + oeFL) - oeEL) - (eHL[(earlyHL+1)-((earlyHL+1 > earlyH)?earlyH+1:0)]*0.5);
			double oeIL = ((oeDL + oeEL) - oeFL) - (eIL[(earlyIL+1)-((earlyIL+1 > earlyI)?earlyI+1:0)]*0.5);
			double oeAR = ((oeER + oeHR) - oeBR) - (eAR[(earlyAR+1)-((earlyAR+1 > earlyA)?earlyA+1:0)]*0.5);
			double oeDR = ((oeBR + oeHR) - oeER) - (eDR[(earlyDR+1)-((earlyDR+1 > earlyD)?earlyD+1:0)]*0.5);
			double oeGR = ((oeBR + oeER) - oeHR) - (eGR[(earlyGR+1)-((earlyGR+1 > earlyG)?earlyG+1:0)]*0.5);
			
			eGL[earlyGL] = oeGL; oeGL *= 0.5;
			eHL[earlyHL] = oeHL; oeHL *= 0.5;
			eIL[earlyIL] = oeIL; oeIL *= 0.5;
			eAR[earlyAR] = oeAR; oeAR *= 0.5;
			eDR[earlyDR] = oeDR; oeDR *= 0.5;
			eGR[earlyGR] = oeGR; oeGR *= 0.5;
			
			earlyGL++; if (earlyGL < 0 || earlyGL > earlyG) earlyGL = 0;
			earlyHL++; if (earlyHL < 0 || earlyHL > earlyH) earlyHL = 0;
			earlyIL++; if (earlyIL < 0 || earlyIL > earlyI) earlyIL = 0;
			earlyAR++; if (earlyAR < 0 || earlyAR > earlyA) earlyAR = 0;
			earlyDR++; if (earlyDR < 0 || earlyDR > earlyD) earlyDR = 0;
			earlyGR++; if (earlyGR < 0 || earlyGR > earlyG) earlyGR = 0;
			
			oeGL += eGL[earlyGL-((earlyGL > earlyG)?earlyG+1:0)];
			oeHL += eHL[earlyHL-((earlyHL > earlyH)?earlyH+1:0)];
			oeIL += eIL[earlyIL-((earlyIL > earlyI)?earlyI+1:0)];
			oeAR += eAR[earlyAR-((earlyAR > earlyA)?earlyA+1:0)];
			oeDR += eDR[earlyDR-((earlyDR > earlyD)?earlyD+1:0)];
			oeGR += eGR[earlyGR-((earlyGR > earlyG)?earlyG+1:0)];
			
			//allpasses predelay
			aZL[countZ] = (oeGL + oeHL + oeIL)*0.25;
			aZR[countZ] = (oeAR + oeDR + oeGR)*0.25;
			countZ++; if (countZ < 0 || countZ > adjPredelay) countZ = 0;
			inputSampleL = aZL[countZ-((countZ > adjPredelay)?adjPredelay+1:0)];
			inputSampleR = aZR[countZ-((countZ > adjPredelay)?adjPredelay+1:0)];
			//end allpasses
			
			aAL[countAL] = inputSampleL + (feedbackAL * regen);
			aBL[countBL] = inputSampleL + (feedbackBL * regen);
			aCL[countCL] = inputSampleL + (feedbackCL * regen);
			aDL[countDL] = inputSampleL + (feedbackDL * regen);
			aEL[countEL] = inputSampleL + (feedbackEL * regen);
			
			aER[countER] = inputSampleR + (feedbackER * regen);
			aJR[countJR] = inputSampleR + (feedbackJR * regen);
			aOR[countOR] = inputSampleR + (feedbackOR * regen);
			aTR[countTR] = inputSampleR + (feedbackTR * regen);
			aYR[countYR] = inputSampleR + (feedbackYR * regen);
			
			countAL++; if (countAL < 0 || countAL > delayA) countAL = 0;
			countBL++; if (countBL < 0 || countBL > delayB) countBL = 0;
			countCL++; if (countCL < 0 || countCL > delayC) countCL = 0;
			countDL++; if (countDL < 0 || countDL > delayD) countDL = 0;
			countEL++; if (countEL < 0 || countEL > delayE) countEL = 0;
			
			countER++; if (countER < 0 || countER > delayE) countER = 0;
			countJR++; if (countJR < 0 || countJR > delayJ) countJR = 0;
			countOR++; if (countOR < 0 || countOR > delayO) countOR = 0;
			countTR++; if (countTR < 0 || countTR > delayT) countTR = 0;
			countYR++; if (countYR < 0 || countYR > delayY) countYR = 0;
			
			double outAL = aAL[countAL-((countAL > delayA)?delayA+1:0)];
			double outBL = aBL[countBL-((countBL > delayB)?delayB+1:0)];
			double outCL = aCL[countCL-((countCL > delayC)?delayC+1:0)];
			double outDL = aDL[countDL-((countDL > delayD)?delayD+1:0)];
			double outEL = aEL[countEL-((countEL > delayE)?delayE+1:0)];
			
			double outER = aER[countER-((countER > delayE)?delayE+1:0)];
			double outJR = aJR[countJR-((countJR > delayJ)?delayJ+1:0)];
			double outOR = aOR[countOR-((countOR > delayO)?delayO+1:0)];
			double outTR = aTR[countTR-((countTR > delayT)?delayT+1:0)];
			double outYR = aYR[countYR-((countYR > delayY)?delayY+1:0)];
			
			//-------- one
			
			outSample = (outAL * fixA[fix_a0]) + fixA[fix_sL1];
			fixA[fix_sL1] = (outAL * fixA[fix_a1]) - (outSample * fixA[fix_b1]) + fixA[fix_sL2];
			fixA[fix_sL2] = (outAL * fixA[fix_a2]) - (outSample * fixA[fix_b2]);
			outAL = outSample; //fixed biquad
			
			outSample = (outER * fixA[fix_a0]) + fixA[fix_sR1];
			fixA[fix_sR1] = (outER * fixA[fix_a1]) - (outSample * fixA[fix_b1]) + fixA[fix_sR2];
			fixA[fix_sR2] = (outER * fixA[fix_a2]) - (outSample * fixA[fix_b2]);
			outER = outSample; //fixed biquad
			
			//-------- filtered (one path in five, feeding the rest of the matrix
			
			aFL[countFL] = ((outAL*3.0) - ((outBL + outCL + outDL + outEL)*2.0));
			aGL[countGL] = ((outBL*3.0) - ((outAL + outCL + outDL + outEL)*2.0));
			aHL[countHL] = ((outCL*3.0) - ((outAL + outBL + outDL + outEL)*2.0));
			aIL[countIL] = ((outDL*3.0) - ((outAL + outBL + outCL + outEL)*2.0));
			aJL[countJL] = ((outEL*3.0) - ((outAL + outBL + outCL + outDL)*2.0));
			
			aDR[countDR] = ((outER*3.0) - ((outJR + outOR + outTR + outYR)*2.0));
			aIR[countIR] = ((outJR*3.0) - ((outER + outOR + outTR + outYR)*2.0));
			aNR[countNR] = ((outOR*3.0) - ((outER + outJR + outTR + outYR)*2.0));
			aSR[countSR] = ((outTR*3.0) - ((outER + outJR + outOR + outYR)*2.0));
			aXR[countXR] = ((outYR*3.0) - ((outER + outJR + outOR + outTR)*2.0));
			
			countFL++; if (countFL < 0 || countFL > delayF) countFL = 0;
			countGL++; if (countGL < 0 || countGL > delayG) countGL = 0;
			countHL++; if (countHL < 0 || countHL > delayH) countHL = 0;
			countIL++; if (countIL < 0 || countIL > delayI) countIL = 0;
			countJL++; if (countJL < 0 || countJL > delayJ) countJL = 0;
			
			countDR++; if (countDR < 0 || countDR > delayD) countDR = 0;
			countIR++; if (countIR < 0 || countIR > delayI) countIR = 0;
			countNR++; if (countNR < 0 || countNR > delayN) countNR = 0;
			countSR++; if (countSR < 0 || countSR > delayS) countSR = 0;
			countXR++; if (countXR < 0 || countXR > delayX) countXR = 0;
			
			double outFL = aFL[countFL-((countFL > delayF)?delayF+1:0)];
			double outGL = aGL[countGL-((countGL > delayG)?delayG+1:0)];
			double outHL = aHL[countHL-((countHL > delayH)?delayH+1:0)];
			double outIL = aIL[countIL-((countIL > delayI)?delayI+1:0)];
			double outJL = aJL[countJL-((countJL > delayJ)?delayJ+1:0)];
			
			double outDR = aDR[countDR-((countDR > delayD)?delayD+1:0)];
			double outIR = aIR[countIR-((countIR > delayI)?delayI+1:0)];
			double outNR = aNR[countNR-((countNR > delayN)?delayN+1:0)];
			double outSR = aSR[countSR-((countSR > delayS)?delayS+1:0)];
			double outXR = aXR[countXR-((countXR > delayX)?delayX+1:0)];
			
			//-------- mulch
			
			outSample = (outFL * fixB[fix_a0]) + fixB[fix_sL1];
			fixB[fix_sL1] = (outFL * fixB[fix_a1]) - (outSample * fixB[fix_b1]) + fixB[fix_sL2];
			fixB[fix_sL2] = (outFL * fixB[fix_a2]) - (outSample * fixB[fix_b2]);
			outFL = outSample; //fixed biquad
			
			outSample = (outDR * fixB[fix_a0]) + fixB[fix_sR1];
			fixB[fix_sR1] = (outDR * fixB[fix_a1]) - (outSample * fixB[fix_b1]) + fixB[fix_sR2];
			fixB[fix_sR2] = (outDR * fixB[fix_a2]) - (outSample * fixB[fix_b2]);
			outDR = outSample; //fixed biquad			
			
			outSample = (outGL + prevMulchBL)*0.5;
			prevMulchBL = outGL; outGL = outSample;
			outSample = (outIR + prevMulchBR)*0.5;
			prevMulchBR = outIR; outIR = outSample;
			
			//-------- two
			
			aKL[countKL] = ((outFL*3.0) - ((outGL + outHL + outIL + outJL)*2.0));
			aLL[countLL] = ((outGL*3.0) - ((outFL + outHL + outIL + outJL)*2.0));
			aML[countML] = ((outHL*3.0) - ((outFL + outGL + outIL + outJL)*2.0));
			aNL[countNL] = ((outIL*3.0) - ((outFL + outGL + outHL + outJL)*2.0));
			aOL[countOL] = ((outJL*3.0) - ((outFL + outGL + outHL + outIL)*2.0));
			
			aCR[countCR] = ((outDR*3.0) - ((outIR + outNR + outSR + outXR)*2.0));
			aHR[countHR] = ((outIR*3.0) - ((outDR + outNR + outSR + outXR)*2.0));
			aMR[countMR] = ((outNR*3.0) - ((outDR + outIR + outSR + outXR)*2.0));
			aRR[countRR] = ((outSR*3.0) - ((outDR + outIR + outNR + outXR)*2.0));
			aWR[countWR] = ((outXR*3.0) - ((outDR + outIR + outNR + outSR)*2.0));
			
			countKL++; if (countKL < 0 || countKL > delayK) countKL = 0;
			countLL++; if (countLL < 0 || countLL > delayL) countLL = 0;
			countML++; if (countML < 0 || countML > delayM) countML = 0;
			countNL++; if (countNL < 0 || countNL > delayN) countNL = 0;
			countOL++; if (countOL < 0 || countOL > delayO) countOL = 0;
			
			countCR++; if (countCR < 0 || countCR > delayC) countCR = 0;
			countHR++; if (countHR < 0 || countHR > delayH) countHR = 0;
			countMR++; if (countMR < 0 || countMR > delayM) countMR = 0;
			countRR++; if (countRR < 0 || countRR > delayR) countRR = 0;
			countWR++; if (countWR < 0 || countWR > delayW) countWR = 0;
			
			double outKL = aKL[countKL-((countKL > delayK)?delayK+1:0)];
			double outLL = aLL[countLL-((countLL > delayL)?delayL+1:0)];
			double outML = aML[countML-((countML > delayM)?delayM+1:0)];
			double outNL = aNL[countNL-((countNL > delayN)?delayN+1:0)];
			double outOL = aOL[countOL-((countOL > delayO)?delayO+1:0)];
			
			double outCR = aCR[countCR-((countCR > delayC)?delayC+1:0)];
			double outHR = aHR[countHR-((countHR > delayH)?delayH+1:0)];
			double outMR = aMR[countMR-((countMR > delayM)?delayM+1:0)];
			double outRR = aRR[countRR-((countRR > delayR)?delayR+1:0)];
			double outWR = aWR[countWR-((countWR > delayW)?delayW+1:0)];
			
			//-------- mulch
			
			outSample = (outKL * fixC[fix_a0]) + fixC[fix_sL1];
			fixC[fix_sL1] = (outKL * fixC[fix_a1]) - (outSample * fixC[fix_b1]) + fixC[fix_sL2];
			fixC[fix_sL2] = (outKL * fixC[fix_a2]) - (outSample * fixC[fix_b2]);
			outKL = outSample; //fixed biquad
			
			outSample = (outCR * fixC[fix_a0]) + fixC[fix_sR1];
			fixC[fix_sR1] = (outCR * fixC[fix_a1]) - (outSample * fixC[fix_b1]) + fixC[fix_sR2];
			fixC[fix_sR2] = (outCR * fixC[fix_a2]) - (outSample * fixC[fix_b2]);
			outCR = outSample; //fixed biquad			
			
			outSample = (outLL + prevMulchCL)*0.5;
			prevMulchCL = outLL; outLL = outSample;
			outSample = (outHR + prevMulchCR)*0.5;
			prevMulchCR = outHR; outHR = outSample;
			
			//-------- three
			
			aPL[countPL] = ((outKL*3.0) - ((outLL + outML + outNL + outOL)*2.0));
			aQL[countQL] = ((outLL*3.0) - ((outKL + outML + outNL + outOL)*2.0));
			aRL[countRL] = ((outML*3.0) - ((outKL + outLL + outNL + outOL)*2.0));
			aSL[countSL] = ((outNL*3.0) - ((outKL + outLL + outML + outOL)*2.0));
			aTL[countTL] = ((outOL*3.0) - ((outKL + outLL + outML + outNL)*2.0));
			
			aBR[countBR] = ((outCR*3.0) - ((outHR + outMR + outRR + outWR)*2.0));
			aGR[countGR] = ((outHR*3.0) - ((outCR + outMR + outRR + outWR)*2.0));
			aLR[countLR] = ((outMR*3.0) - ((outCR + outHR + outRR + outWR)*2.0));
			aQR[countQR] = ((outRR*3.0) - ((outCR + outHR + outMR + outWR)*2.0));
			aVR[countVR] = ((outWR*3.0) - ((outCR + outHR + outMR + outRR)*2.0));
			
			countPL++; if (countPL < 0 || countPL > delayP) countPL = 0;
			countQL++; if (countQL < 0 || countQL > delayQ) countQL = 0;
			countRL++; if (countRL < 0 || countRL > delayR) countRL = 0;
			countSL++; if (countSL < 0 || countSL > delayS) countSL = 0;
			countTL++; if (countTL < 0 || countTL > delayT) countTL = 0;
			
			countBR++; if (countBR < 0 || countBR > delayB) countBR = 0;
			countGR++; if (countGR < 0 || countGR > delayG) countGR = 0;
			countLR++; if (countLR < 0 || countLR > delayL) countLR = 0;
			countQR++; if (countQR < 0 || countQR > delayQ) countQR = 0;
			countVR++; if (countVR < 0 || countVR > delayV) countVR = 0;
			
			double outPL = aPL[countPL-((countPL > delayP)?delayP+1:0)];
			double outQL = aQL[countQL-((countQL > delayQ)?delayQ+1:0)];
			double outRL = aRL[countRL-((countRL > delayR)?delayR+1:0)];
			double outSL = aSL[countSL-((countSL > delayS)?delayS+1:0)];
			double outTL = aTL[countTL-((countTL > delayT)?delayT+1:0)];
			
			double outBR = aBR[countBR-((countBR > delayB)?delayB+1:0)];
			double outGR = aGR[countGR-((countGR > delayG)?delayG+1:0)];
			double outLR = aLR[countLR-((countLR > delayL)?delayL+1:0)];
			double outQR = aQR[countQR-((countQR > delayQ)?delayQ+1:0)];
			double outVR = aVR[countVR-((countVR > delayV)?delayV+1:0)];
			
			//-------- mulch
			
			outSample = (outPL * fixD[fix_a0]) + fixD[fix_sL1];
			fixD[fix_sL1] = (outPL * fixD[fix_a1]) - (outSample * fixD[fix_b1]) + fixD[fix_sL2];
			fixD[fix_sL2] = (outPL * fixD[fix_a2]) - (outSample * fixD[fix_b2]);
			outPL = outSample; //fixed biquad
			
			outSample = (outBR * fixD[fix_a0]) + fixD[fix_sR1];
			fixD[fix_sR1] = (outBR * fixD[fix_a1]) - (outSample * fixD[fix_b1]) + fixD[fix_sR2];
			fixD[fix_sR2] = (outBR * fixD[fix_a2]) - (outSample * fixD[fix_b2]);
			outBR = outSample; //fixed biquad			
			
			outSample = (outQL + prevMulchDL)*0.5;
			prevMulchDL = outQL; outQL = outSample;
			outSample = (outGR + prevMulchDR)*0.5;
			prevMulchDR = outGR; outGR = outSample;
			
			//-------- four
			
			aUL[countUL] = ((outPL*3.0) - ((outQL + outRL + outSL + outTL)*2.0));
			aVL[countVL] = ((outQL*3.0) - ((outPL + outRL + outSL + outTL)*2.0));
			aWL[countWL] = ((outRL*3.0) - ((outPL + outQL + outSL + outTL)*2.0));
			aXL[countXL] = ((outSL*3.0) - ((outPL + outQL + outRL + outTL)*2.0));
			aYL[countYL] = ((outTL*3.0) - ((outPL + outQL + outRL + outSL)*2.0));
			
			aAR[countAR] = ((outBR*3.0) - ((outGR + outLR + outQR + outVR)*2.0));
			aFR[countFR] = ((outGR*3.0) - ((outBR + outLR + outQR + outVR)*2.0));
			aKR[countKR] = ((outLR*3.0) - ((outBR + outGR + outQR + outVR)*2.0));
			aPR[countPR] = ((outQR*3.0) - ((outBR + outGR + outLR + outVR)*2.0));
			aUR[countUR] = ((outVR*3.0) - ((outBR + outGR + outLR + outQR)*2.0));
			
			countUL++; if (countUL < 0 || countUL > delayU) countUL = 0;
			countVL++; if (countVL < 0 || countVL > delayV) countVL = 0;
			countWL++; if (countWL < 0 || countWL > delayW) countWL = 0;
			countXL++; if (countXL < 0 || countXL > delayX) countXL = 0;
			countYL++; if (countYL < 0 || countYL > delayY) countYL = 0;
			
			countAR++; if (countAR < 0 || countAR > delayA) countAR = 0;
			countFR++; if (countFR < 0 || countFR > delayF) countFR = 0;
			countKR++; if (countKR < 0 || countKR > delayK) countKR = 0;
			countPR++; if (countPR < 0 || countPR > delayP) countPR = 0;
			countUR++; if (countUR < 0 || countUR > delayU) countUR = 0;
			
			double outUL = aUL[countUL-((countUL > delayU)?delayU+1:0)];
			double outVL = aVL[countVL-((countVL > delayV)?delayV+1:0)];
			double outWL = aWL[countWL-((countWL > delayW)?delayW+1:0)];
			double outXL = aXL[countXL-((countXL > delayX)?delayX+1:0)];
			double outYL = aYL[countYL-((countYL > delayY)?delayY+1:0)];
			
			double outAR = aAR[countAR-((countAR > delayA)?delayA+1:0)];
			double outFR = aFR[countFR-((countFR > delayF)?delayF+1:0)];
			double outKR = aKR[countKR-((countKR > delayK)?delayK+1:0)];
			double outPR = aPR[countPR-((countPR > delayP)?delayP+1:0)];
			double outUR = aUR[countUR-((countUR > delayU)?delayU+1:0)];
			
			//-------- mulch
			
			outSample = (outVL + prevMulchEL)*0.5;
			prevMulchEL = outVL; outVL = outSample;
			outSample = (outFR + prevMulchER)*0.5;
			prevMulchER = outFR; outFR = outSample;
			
			//-------- five
			
			feedbackER = ((outUL*3.0) - ((outVL + outWL + outXL + outYL)*2.0));
			feedbackAL = ((outAR*3.0) - ((outFR + outKR + outPR + outUR)*2.0));
			feedbackJR = ((outVL*3.0) - ((outUL + outWL + outXL + outYL)*2.0));
			feedbackBL = ((outFR*3.0) - ((outAR + outKR + outPR + outUR)*2.0));
			feedbackOR = ((outWL*3.0) - ((outUL + outVL + outXL + outYL)*2.0));
			feedbackCL = ((outKR*3.0) - ((outAR + outFR + outPR + outUR)*2.0));
			feedbackTR = ((outXL*3.0) - ((outUL + outVL + outWL + outYL)*2.0));
			feedbackDL = ((outPR*3.0) - ((outAR + outFR + outKR + outUR)*2.0));
			feedbackYR = ((outYL*3.0) - ((outUL + outVL + outWL + outXL)*2.0));
			feedbackEL = ((outUR*3.0) - ((outAR + outFR + outKR + outPR)*2.0));
			//which we need to feed back into the input again, a bit
			
			inputSampleL = (outUL + outVL + outWL + outXL + outYL)*0.0016;
			inputSampleR = (outAR + outFR + outKR + outPR + outUR)*0.0016;
			//and take the final combined sum of outputs, corrected for Householder gain
			
			inputSampleL *= 0.5; inputSampleR *= 0.5;
			if (gainOutL < 0.0078125) gainOutL = 0.0078125; if (gainOutL > 1.0) gainOutL = 1.0;
			if (gainOutR < 0.0078125) gainOutR = 0.0078125; if (gainOutR > 1.0) gainOutR = 1.0;
			//gain of 1,0 gives you a super-clean one, gain of 2 is obviously compressing
			//smaller number is maximum clamping, if too small it'll take a while to bounce back
			inputSampleL *= gainOutL; inputSampleR *= gainOutR;
			gainOutL += sin((fabs(inputSampleL*4)>1)?4:fabs(inputSampleL*4))*pow(inputSampleL,4);
			gainOutR += sin((fabs(inputSampleR*4)>1)?4:fabs(inputSampleR*4))*pow(inputSampleR,4);
			//4.71239 radians sined will turn to -1 which is the maximum gain reduction speed
			inputSampleL *= 2.0; inputSampleR *= 2.0;
			//curve! To get a compressed effect that matches a certain other plugin
			//that is too overprocessed for its own good :)			
			
			outSample = (inputSampleL + prevOutDL)*0.5;
			prevOutDL = inputSampleL; inputSampleL = outSample;
			outSample = (inputSampleR + prevOutDR)*0.5;
			prevOutDR = inputSampleR; inputSampleR = outSample;
			outSample = (inputSampleL + prevOutEL)*0.5;
			prevOutEL = inputSampleL; inputSampleL = outSample;
			outSample = (inputSampleR + prevOutER)*0.5;
			prevOutER = inputSampleR; inputSampleR = outSample;
			
			if (cycleEnd == 4) {
				lastRefL[0] = lastRefL[4]; //start from previous last
				lastRefL[2] = (lastRefL[0] + inputSampleL)/2; //half
				lastRefL[1] = (lastRefL[0] + lastRefL[2])/2; //one quarter
				lastRefL[3] = (lastRefL[2] + inputSampleL)/2; //three quarters
				lastRefL[4] = inputSampleL; //full
				lastRefR[0] = lastRefR[4]; //start from previous last
				lastRefR[2] = (lastRefR[0] + inputSampleR)/2; //half
				lastRefR[1] = (lastRefR[0] + lastRefR[2])/2; //one quarter
				lastRefR[3] = (lastRefR[2] + inputSampleR)/2; //three quarters
				lastRefR[4] = inputSampleR; //full
			}
			if (cycleEnd == 3) {
				lastRefL[0] = lastRefL[3]; //start from previous last
				lastRefL[2] = (lastRefL[0]+lastRefL[0]+inputSampleL)/3; //third
				lastRefL[1] = (lastRefL[0]+inputSampleL+inputSampleL)/3; //two thirds
				lastRefL[3] = inputSampleL; //full
				lastRefR[0] = lastRefR[3]; //start from previous last
				lastRefR[2] = (lastRefR[0]+lastRefR[0]+inputSampleR)/3; //third
				lastRefR[1] = (lastRefR[0]+inputSampleR+inputSampleR)/3; //two thirds
				lastRefR[3] = inputSampleR; //full
			}
			if (cycleEnd == 2) {
				lastRefL[0] = lastRefL[2]; //start from previous last
				lastRefL[1] = (lastRefL[0] + inputSampleL)/2; //half
				lastRefL[2] = inputSampleL; //full
				lastRefR[0] = lastRefR[2]; //start from previous last
				lastRefR[1] = (lastRefR[0] + inputSampleR)/2; //half
				lastRefR[2] = inputSampleR; //full
			}
			if (cycleEnd == 1) {
				lastRefL[0] = inputSampleL;
				lastRefR[0] = inputSampleR;
			}
			cycle = 0; //reset
			inputSampleL = lastRefL[cycle];
			inputSampleR = lastRefR[cycle];
		} else {
			inputSampleL = lastRefL[cycle];
			inputSampleR = lastRefR[cycle];
			//we are going through our references now
		}
		
		if (inputSampleL > 1.0) inputSampleL = 1.0;
		if (inputSampleL < -1.0) inputSampleL = -1.0;
		if (inputSampleR > 1.0) inputSampleR = 1.0;
		if (inputSampleR < -1.0) inputSampleR = -1.0;
		//without this, you can get a NaN condition where it spits out DC offset at full blast!
		inputSampleL = asin(inputSampleL);
		inputSampleR = asin(inputSampleR);
		//amplitude aspect
		
		if (wet < 1.0) {inputSampleL *= wet; inputSampleR *= wet;}
		if (dry < 1.0) {drySampleL *= dry; drySampleR *= dry;}
		inputSampleL += drySampleL; inputSampleR += drySampleR;
		//this is our submix verb dry/wet: 0.5 is BOTH at FULL VOLUME
		//purpose is that, if you're adding verb, you're not altering other balances
		
		//begin 32 bit stereo floating point dither
		int expon; frexpf((float)inputSampleL, &expon);
		fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
		inputSampleL += double((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2.0,expon+62.0));
		frexpf((float)inputSampleR, &expon);
		fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
		inputSampleR += double((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2.0,expon+62.0));
		//end 32 bit stereo floating point dither
		
		*out1 = float(inputSampleL);
		*out2 = float(inputSampleR);

		in1++;
		in2++;
		out1++;
		out2++;
    }
}

} // end namespace

#endif // SHR3D_SFX_CORE_AIRWINDOWS
