mirror of
https://github.com/airwindows/airwindows.git
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284 lines
11 KiB
C++
Executable file
284 lines
11 KiB
C++
Executable file
/* ========================================
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* Focus - Focus.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Focus_H
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#include "Focus.h"
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#endif
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void Focus::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
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{
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float* in1 = inputs[0];
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float* in2 = inputs[1];
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float* out1 = outputs[0];
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float* out2 = outputs[1];
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//[0] is frequency: 0.000001 to 0.499999 is near-zero to near-Nyquist
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//[1] is resonance, 0.7071 is Butterworth. Also can't be zero
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double boost = pow(10.0,(A*12.0)/20.0);
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figureL[0] = figureR[0] = 3515.775/getSampleRate(); //fixed frequency, 3.515775k
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figureL[1] = figureR[1] = pow(pow(B,3)*2,2)+0.0001; //resonance
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int mode = (int) ( C * 4.999 );
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double output = D;
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double wet = E;
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double K = tan(M_PI * figureR[0]);
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double norm = 1.0 / (1.0 + K / figureR[1] + K * K);
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figureL[2] = figureR[2] = K / figureR[1] * norm;
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figureL[4] = figureR[4] = -figureR[2];
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figureL[5] = figureR[5] = 2.0 * (K * K - 1.0) * norm;
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figureL[6] = figureR[6] = (1.0 - K / figureR[1] + K * K) * norm;
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while (--sampleFrames >= 0)
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{
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double inputSampleL = *in1;
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double inputSampleR = *in2;
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if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
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if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
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double drySampleL = inputSampleL;
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double drySampleR = inputSampleR;
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inputSampleL = sin(inputSampleL);
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inputSampleR = sin(inputSampleR);
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//encode Console5: good cleanness
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double tempSample = (inputSampleL * figureL[2]) + figureL[7];
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figureL[7] = -(tempSample * figureL[5]) + figureL[8];
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figureL[8] = (inputSampleL * figureL[4]) - (tempSample * figureL[6]);
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inputSampleL = tempSample;
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tempSample = (inputSampleR * figureR[2]) + figureR[7];
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figureR[7] = -(tempSample * figureR[5]) + figureR[8];
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figureR[8] = (inputSampleR * figureR[4]) - (tempSample * figureR[6]);
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inputSampleR = tempSample;
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if (inputSampleL > 1.0) inputSampleL = 1.0;
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if (inputSampleL < -1.0) inputSampleL = -1.0;
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if (inputSampleR > 1.0) inputSampleR = 1.0;
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if (inputSampleR < -1.0) inputSampleR = -1.0;
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//without this, you can get a NaN condition where it spits out DC offset at full blast!
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inputSampleL = asin(inputSampleL);
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inputSampleR = asin(inputSampleR);
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//decode Console5
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double groundSampleL = drySampleL - inputSampleL; //set up UnBox
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double groundSampleR = drySampleR - inputSampleR; //set up UnBox
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inputSampleL *= boost; //now, focussed area gets cranked before distort
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inputSampleR *= boost; //now, focussed area gets cranked before distort
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switch (mode)
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{
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case 0: //Density
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if (inputSampleL > 1.570796326794897) inputSampleL = 1.570796326794897;
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if (inputSampleL < -1.570796326794897) inputSampleL = -1.570796326794897;
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if (inputSampleR > 1.570796326794897) inputSampleR = 1.570796326794897;
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if (inputSampleR < -1.570796326794897) inputSampleR = -1.570796326794897;
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//clip to 1.570796326794897 to reach maximum output
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inputSampleL = sin(inputSampleL);
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inputSampleR = sin(inputSampleR);
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break;
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case 1: //Drive
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if (inputSampleL > 1.0) inputSampleL = 1.0;
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if (inputSampleL < -1.0) inputSampleL = -1.0;
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if (inputSampleR > 1.0) inputSampleR = 1.0;
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if (inputSampleR < -1.0) inputSampleR = -1.0;
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inputSampleL -= (inputSampleL * (fabs(inputSampleL) * 0.6) * (fabs(inputSampleL) * 0.6));
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inputSampleR -= (inputSampleR * (fabs(inputSampleR) * 0.6) * (fabs(inputSampleR) * 0.6));
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inputSampleL *= 1.6;
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inputSampleR *= 1.6;
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break;
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case 2: //Spiral
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if (inputSampleL > 1.2533141373155) inputSampleL = 1.2533141373155;
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if (inputSampleL < -1.2533141373155) inputSampleL = -1.2533141373155;
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if (inputSampleR > 1.2533141373155) inputSampleR = 1.2533141373155;
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if (inputSampleR < -1.2533141373155) inputSampleR = -1.2533141373155;
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//clip to 1.2533141373155 to reach maximum output
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inputSampleL = sin(inputSampleL * fabs(inputSampleL)) / ((fabs(inputSampleL) == 0.0) ?1:fabs(inputSampleL));
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inputSampleR = sin(inputSampleR * fabs(inputSampleR)) / ((fabs(inputSampleR) == 0.0) ?1:fabs(inputSampleR));
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break;
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case 3: //Mojo
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double mojo; mojo = pow(fabs(inputSampleL),0.25);
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if (mojo > 0.0) inputSampleL = (sin(inputSampleL * mojo * M_PI * 0.5) / mojo) * 0.987654321;
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mojo = pow(fabs(inputSampleR),0.25);
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if (mojo > 0.0) inputSampleR = (sin(inputSampleR * mojo * M_PI * 0.5) / mojo) * 0.987654321;
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//mojo is the one that flattens WAAAAY out very softly before wavefolding
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break;
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case 4: //Dyno
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double dyno; dyno = pow(fabs(inputSampleL),4);
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if (dyno > 0.0) inputSampleL = (sin(inputSampleL * dyno) / dyno) * 1.1654321;
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dyno = pow(fabs(inputSampleR),4);
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if (dyno > 0.0) inputSampleR = (sin(inputSampleR * dyno) / dyno) * 1.1654321;
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//dyno is the one that tries to raise peak energy
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break;
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}
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if (output != 1.0) {
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inputSampleL *= output;
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inputSampleR *= output;
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}
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inputSampleL += groundSampleL; //effectively UnBox
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inputSampleR += groundSampleR; //effectively UnBox
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if (wet !=1.0) {
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inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet));
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inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet));
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}
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//begin 32 bit stereo floating point dither
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int expon; frexpf((float)inputSampleL, &expon);
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fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
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inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
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frexpf((float)inputSampleR, &expon);
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fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
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inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
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//end 32 bit stereo floating point dither
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*out1 = inputSampleL;
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*out2 = inputSampleR;
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*in1++;
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*in2++;
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*out1++;
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*out2++;
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}
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}
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void Focus::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
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{
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double* in1 = inputs[0];
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double* in2 = inputs[1];
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double* out1 = outputs[0];
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double* out2 = outputs[1];
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//[0] is frequency: 0.000001 to 0.499999 is near-zero to near-Nyquist
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//[1] is resonance, 0.7071 is Butterworth. Also can't be zero
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double boost = pow(10.0,(A*12.0)/20.0);
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figureL[0] = figureR[0] = 3515.775/getSampleRate(); //fixed frequency, 3.515775k
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figureL[1] = figureR[1] = pow(pow(B,3)*2,2)+0.0001; //resonance
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int mode = (int) ( C * 4.999 );
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double output = D;
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double wet = E;
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double K = tan(M_PI * figureR[0]);
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double norm = 1.0 / (1.0 + K / figureR[1] + K * K);
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figureL[2] = figureR[2] = K / figureR[1] * norm;
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figureL[4] = figureR[4] = -figureR[2];
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figureL[5] = figureR[5] = 2.0 * (K * K - 1.0) * norm;
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figureL[6] = figureR[6] = (1.0 - K / figureR[1] + K * K) * norm;
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while (--sampleFrames >= 0)
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{
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double inputSampleL = *in1;
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double inputSampleR = *in2;
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if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
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if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
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double drySampleL = inputSampleL;
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double drySampleR = inputSampleR;
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inputSampleL = sin(inputSampleL);
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inputSampleR = sin(inputSampleR);
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//encode Console5: good cleanness
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double tempSample = (inputSampleL * figureL[2]) + figureL[7];
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figureL[7] = -(tempSample * figureL[5]) + figureL[8];
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figureL[8] = (inputSampleL * figureL[4]) - (tempSample * figureL[6]);
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inputSampleL = tempSample;
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tempSample = (inputSampleR * figureR[2]) + figureR[7];
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figureR[7] = -(tempSample * figureR[5]) + figureR[8];
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figureR[8] = (inputSampleR * figureR[4]) - (tempSample * figureR[6]);
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inputSampleR = tempSample;
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if (inputSampleL > 1.0) inputSampleL = 1.0;
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if (inputSampleL < -1.0) inputSampleL = -1.0;
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if (inputSampleR > 1.0) inputSampleR = 1.0;
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if (inputSampleR < -1.0) inputSampleR = -1.0;
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//without this, you can get a NaN condition where it spits out DC offset at full blast!
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inputSampleL = asin(inputSampleL);
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inputSampleR = asin(inputSampleR);
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//decode Console5
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double groundSampleL = drySampleL - inputSampleL; //set up UnBox
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double groundSampleR = drySampleR - inputSampleR; //set up UnBox
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inputSampleL *= boost; //now, focussed area gets cranked before distort
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inputSampleR *= boost; //now, focussed area gets cranked before distort
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switch (mode)
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{
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case 0: //Density
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if (inputSampleL > 1.570796326794897) inputSampleL = 1.570796326794897;
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if (inputSampleL < -1.570796326794897) inputSampleL = -1.570796326794897;
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if (inputSampleR > 1.570796326794897) inputSampleR = 1.570796326794897;
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if (inputSampleR < -1.570796326794897) inputSampleR = -1.570796326794897;
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//clip to 1.570796326794897 to reach maximum output
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inputSampleL = sin(inputSampleL);
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inputSampleR = sin(inputSampleR);
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break;
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case 1: //Drive
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if (inputSampleL > 1.0) inputSampleL = 1.0;
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if (inputSampleL < -1.0) inputSampleL = -1.0;
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if (inputSampleR > 1.0) inputSampleR = 1.0;
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if (inputSampleR < -1.0) inputSampleR = -1.0;
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inputSampleL -= (inputSampleL * (fabs(inputSampleL) * 0.6) * (fabs(inputSampleL) * 0.6));
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inputSampleR -= (inputSampleR * (fabs(inputSampleR) * 0.6) * (fabs(inputSampleR) * 0.6));
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inputSampleL *= 1.6;
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inputSampleR *= 1.6;
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break;
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case 2: //Spiral
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if (inputSampleL > 1.2533141373155) inputSampleL = 1.2533141373155;
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if (inputSampleL < -1.2533141373155) inputSampleL = -1.2533141373155;
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if (inputSampleR > 1.2533141373155) inputSampleR = 1.2533141373155;
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if (inputSampleR < -1.2533141373155) inputSampleR = -1.2533141373155;
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//clip to 1.2533141373155 to reach maximum output
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inputSampleL = sin(inputSampleL * fabs(inputSampleL)) / ((fabs(inputSampleL) == 0.0) ?1:fabs(inputSampleL));
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inputSampleR = sin(inputSampleR * fabs(inputSampleR)) / ((fabs(inputSampleR) == 0.0) ?1:fabs(inputSampleR));
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break;
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case 3: //Mojo
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double mojo; mojo = pow(fabs(inputSampleL),0.25);
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if (mojo > 0.0) inputSampleL = (sin(inputSampleL * mojo * M_PI * 0.5) / mojo) * 0.987654321;
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mojo = pow(fabs(inputSampleR),0.25);
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if (mojo > 0.0) inputSampleR = (sin(inputSampleR * mojo * M_PI * 0.5) / mojo) * 0.987654321;
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//mojo is the one that flattens WAAAAY out very softly before wavefolding
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break;
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case 4: //Dyno
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double dyno; dyno = pow(fabs(inputSampleL),4);
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if (dyno > 0.0) inputSampleL = (sin(inputSampleL * dyno) / dyno) * 1.1654321;
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dyno = pow(fabs(inputSampleR),4);
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if (dyno > 0.0) inputSampleR = (sin(inputSampleR * dyno) / dyno) * 1.1654321;
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//dyno is the one that tries to raise peak energy
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break;
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}
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if (output != 1.0) {
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inputSampleL *= output;
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inputSampleR *= output;
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}
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inputSampleL += groundSampleL; //effectively UnBox
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inputSampleR += groundSampleR; //effectively UnBox
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if (wet !=1.0) {
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inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet));
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inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet));
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}
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//begin 64 bit stereo floating point dither
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//int expon; frexp((double)inputSampleL, &expon);
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fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
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//inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
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//frexp((double)inputSampleR, &expon);
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fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
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//inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
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//end 64 bit stereo floating point dither
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*out1 = inputSampleL;
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*out2 = inputSampleR;
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*in1++;
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*in2++;
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*out1++;
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*out2++;
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}
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}
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