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280 lines
12 KiB
C++
Executable file
280 lines
12 KiB
C++
Executable file
/* ========================================
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* Highpass2 - Highpass2.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Highpass2_H
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#include "Highpass2.h"
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#endif
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void Highpass2::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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double iirAmount = A;
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double tight = (B*2.0)-1.0;
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if (iirAmount < 0.0000001) iirAmount = 0.0000001;
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if (iirAmount > 1) iirAmount = 1;
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if (tight < 0.0) tight *= 0.5;
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double offsetL;
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double offsetR;
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double aWet = 1.0;
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double bWet = 1.0;
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double cWet = 1.0;
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double dWet = C*4.0;
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//four-stage wet/dry control using progressive stages that bypass when not engaged
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if (dWet < 1.0) {aWet = dWet; bWet = 0.0; cWet = 0.0; dWet = 0.0;}
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else if (dWet < 2.0) {bWet = dWet - 1.0; cWet = 0.0; dWet = 0.0;}
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else if (dWet < 3.0) {cWet = dWet - 2.0; dWet = 0.0;}
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else {dWet -= 3.0;}
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//this is one way to make a little set of dry/wet stages that are successively added to the
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//output as the control is turned up. Each one independently goes from 0-1 and stays at 1
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//beyond that point: this is a way to progressively add a 'black box' sound processing
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//which lets you fall through to simpler processing at lower settings.
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double wet = D;
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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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if (tight > 0) offsetL = (1 - tight) + (fabs(inputSampleL)*tight);
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else offsetL = (1 + tight) + ((1-fabs(inputSampleL))*tight);
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if (offsetL < 0.0000001) offsetL = 0.0000001; if (offsetL > 1) offsetL = 1;
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if (tight > 0) offsetR = (1 - tight) + (fabs(inputSampleR)*tight);
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else offsetR = (1 + tight) + ((1-fabs(inputSampleR))*tight);
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if (offsetR < 0.0000001) offsetR = 0.0000001; if (offsetR > 1) offsetR = 1;
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if (fpFlip)
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{
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if (aWet > 0.0) {
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iirSampleAL = (iirSampleAL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleAL) * aWet) + (inputSampleL * (1.0-aWet));
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iirSampleAR = (iirSampleAR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleAR) * aWet) + (inputSampleR * (1.0-aWet));
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}
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if (bWet > 0.0) {
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iirSampleCL = (iirSampleCL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleCL) * bWet) + (inputSampleL * (1.0-bWet));
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iirSampleCR = (iirSampleCR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleCR) * bWet) + (inputSampleR * (1.0-bWet));
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}
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if (cWet > 0.0) {
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iirSampleEL = (iirSampleEL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleEL) * cWet) + (inputSampleL * (1.0-cWet));
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iirSampleER = (iirSampleER * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleER) * cWet) + (inputSampleR * (1.0-cWet));
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}
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if (dWet > 0.0) {
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iirSampleGL = (iirSampleGL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleGL) * dWet) + (inputSampleL * (1.0-dWet));
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iirSampleGR = (iirSampleGR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleGR) * dWet) + (inputSampleR * (1.0-dWet));
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}
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}
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else
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{
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if (aWet > 0.0) {
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iirSampleBL = (iirSampleBL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleBL) * aWet) + (inputSampleL * (1.0-aWet));
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iirSampleBR = (iirSampleBR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleBR) * aWet) + (inputSampleR * (1.0-aWet));
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}
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if (bWet > 0.0) {
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iirSampleDL = (iirSampleDL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleDL) * bWet) + (inputSampleL * (1.0-bWet));
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iirSampleDR = (iirSampleDR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleDR) * bWet) + (inputSampleR * (1.0-bWet));
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}
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if (cWet > 0.0) {
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iirSampleFL = (iirSampleFL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleFL) * cWet) + (inputSampleL * (1.0-cWet));
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iirSampleFR = (iirSampleFR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleFR) * cWet) + (inputSampleR * (1.0-cWet));
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}
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if (dWet > 0.0) {
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iirSampleHL = (iirSampleHL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleHL) * dWet) + (inputSampleL * (1.0-dWet));
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iirSampleHR = (iirSampleHR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleHR) * dWet) + (inputSampleR * (1.0-dWet));
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}
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}
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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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//Dry/Wet control, defaults to the last slider
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fpFlip = !fpFlip;
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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 Highpass2::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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double iirAmount = A;
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double tight = (B*2.0)-1.0;
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if (iirAmount < 0.0000001) iirAmount = 0.0000001;
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if (iirAmount > 1) iirAmount = 1;
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if (tight < 0.0) tight *= 0.5;
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double offsetL;
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double offsetR;
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double aWet = 1.0;
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double bWet = 1.0;
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double cWet = 1.0;
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double dWet = C*4.0;
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//four-stage wet/dry control using progressive stages that bypass when not engaged
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if (dWet < 1.0) {aWet = dWet; bWet = 0.0; cWet = 0.0; dWet = 0.0;}
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else if (dWet < 2.0) {bWet = dWet - 1.0; cWet = 0.0; dWet = 0.0;}
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else if (dWet < 3.0) {cWet = dWet - 2.0; dWet = 0.0;}
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else {dWet -= 3.0;}
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//this is one way to make a little set of dry/wet stages that are successively added to the
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//output as the control is turned up. Each one independently goes from 0-1 and stays at 1
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//beyond that point: this is a way to progressively add a 'black box' sound processing
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//which lets you fall through to simpler processing at lower settings.
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double wet = D;
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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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if (tight > 0) offsetL = (1 - tight) + (fabs(inputSampleL)*tight);
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else offsetL = (1 + tight) + ((1-fabs(inputSampleL))*tight);
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if (offsetL < 0.0000001) offsetL = 0.0000001; if (offsetL > 1) offsetL = 1;
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if (tight > 0) offsetR = (1 - tight) + (fabs(inputSampleR)*tight);
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else offsetR = (1 + tight) + ((1-fabs(inputSampleR))*tight);
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if (offsetR < 0.0000001) offsetR = 0.0000001; if (offsetR > 1) offsetR = 1;
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if (fpFlip)
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{
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if (aWet > 0.0) {
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iirSampleAL = (iirSampleAL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleAL) * aWet) + (inputSampleL * (1.0-aWet));
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iirSampleAR = (iirSampleAR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleAR) * aWet) + (inputSampleR * (1.0-aWet));
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}
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if (bWet > 0.0) {
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iirSampleCL = (iirSampleCL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleCL) * bWet) + (inputSampleL * (1.0-bWet));
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iirSampleCR = (iirSampleCR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleCR) * bWet) + (inputSampleR * (1.0-bWet));
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}
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if (cWet > 0.0) {
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iirSampleEL = (iirSampleEL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleEL) * cWet) + (inputSampleL * (1.0-cWet));
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iirSampleER = (iirSampleER * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleER) * cWet) + (inputSampleR * (1.0-cWet));
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}
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if (dWet > 0.0) {
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iirSampleGL = (iirSampleGL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleGL) * dWet) + (inputSampleL * (1.0-dWet));
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iirSampleGR = (iirSampleGR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleGR) * dWet) + (inputSampleR * (1.0-dWet));
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}
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}
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else
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{
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if (aWet > 0.0) {
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iirSampleBL = (iirSampleBL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleBL) * aWet) + (inputSampleL * (1.0-aWet));
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iirSampleBR = (iirSampleBR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleBR) * aWet) + (inputSampleR * (1.0-aWet));
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}
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if (bWet > 0.0) {
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iirSampleDL = (iirSampleDL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleDL) * bWet) + (inputSampleL * (1.0-bWet));
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iirSampleDR = (iirSampleDR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleDR) * bWet) + (inputSampleR * (1.0-bWet));
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}
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if (cWet > 0.0) {
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iirSampleFL = (iirSampleFL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleFL) * cWet) + (inputSampleL * (1.0-cWet));
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iirSampleFR = (iirSampleFR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleFR) * cWet) + (inputSampleR * (1.0-cWet));
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}
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if (dWet > 0.0) {
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iirSampleHL = (iirSampleHL * (1 - (offsetL * iirAmount))) + (inputSampleL * (offsetL * iirAmount));
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inputSampleL = ((inputSampleL-iirSampleHL) * dWet) + (inputSampleL * (1.0-dWet));
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iirSampleHR = (iirSampleHR * (1 - (offsetR * iirAmount))) + (inputSampleR * (offsetR * iirAmount));
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inputSampleR = ((inputSampleR-iirSampleHR) * dWet) + (inputSampleR * (1.0-dWet));
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}
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}
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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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//Dry/Wet control, defaults to the last slider
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fpFlip = !fpFlip;
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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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