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https://github.com/airwindows/airwindows.git
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283 lines
No EOL
7.3 KiB
C++
Executable file
283 lines
No EOL
7.3 KiB
C++
Executable file
/* ========================================
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* OneCornerClip - OneCornerClip.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __OneCornerClip_H
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#include "OneCornerClip.h"
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#endif
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void OneCornerClip::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 overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= getSampleRate();
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double inputGain = pow(10.0,(((A*36.0)-12.0)/20.0));
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double posThreshold = B;
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double posTargetL = posThreshold;
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double posTargetR = posThreshold;
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double negThreshold = -C;
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double negTargetL = negThreshold;
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double negTargetR = negThreshold;
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double voicing = D;
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if (voicing == 0.618) voicing = 0.618033988749894848204586;
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//special case: we will do a perfect golden ratio as the default 0.618
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//just 'cos magic universality sauce (seriously, it seems a sweetspot)
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if (overallscale > 0.0) voicing /= overallscale;
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//translate to desired sample rate, 44.1K is the base
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if (voicing < 0.0) voicing = 0.0;
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if (voicing > 1.0) voicing = 1.0;
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//some insanity checking
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double inverseHardness = 1.0 - voicing;
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bool clipEngage = false;
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double wet = E;
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//removed extra dry variable
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double drySampleL;
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double drySampleR;
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double inputSampleL;
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double inputSampleR;
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while (--sampleFrames >= 0)
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{
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inputSampleL = *in1;
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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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drySampleL = inputSampleL;
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drySampleR = inputSampleR;
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if (inputGain != 1.0)
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{
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inputSampleL *= inputGain;
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inputSampleR *= inputGain;
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clipEngage = true;
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//if we are altering gain we will always process
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}
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else
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{
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clipEngage = false;
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//if we are not touching gain, we will bypass unless
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//a clip is actively being softened.
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}
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if (inputSampleL > posTargetL)
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{
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inputSampleL = (lastSampleL * voicing) + (posThreshold * inverseHardness);
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posTargetL = inputSampleL;
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clipEngage = true;
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}
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else
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{
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posTargetL = posThreshold;
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}
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if (inputSampleR > posTargetR)
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{
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inputSampleR = (lastSampleR * voicing) + (posThreshold * inverseHardness);
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posTargetR = inputSampleR;
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clipEngage = true;
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}
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else
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{
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posTargetR = posThreshold;
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}
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if (inputSampleL < negTargetL)
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{
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inputSampleL = (lastSampleL * voicing) + (negThreshold * inverseHardness);
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negTargetL = inputSampleL;
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clipEngage = true;
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}
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else {
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negTargetL = negThreshold;
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}
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if (inputSampleR < negTargetR)
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{
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inputSampleR = (lastSampleR * voicing) + (negThreshold * inverseHardness);
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negTargetR = inputSampleR;
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clipEngage = true;
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}
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else {
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negTargetR = negThreshold;
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}
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lastSampleL = inputSampleL;
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lastSampleR = inputSampleR;
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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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if (clipEngage == false)
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{
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inputSampleL = *in1;
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inputSampleR = *in2;
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}
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//fall back to raw passthrough if at all possible
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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 OneCornerClip::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 overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= getSampleRate();
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double inputGain = pow(10.0,(((A*36.0)-12.0)/20.0));
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double posThreshold = B;
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double posTargetL = posThreshold;
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double posTargetR = posThreshold;
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double negThreshold = -C;
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double negTargetL = negThreshold;
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double negTargetR = negThreshold;
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double voicing = D;
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if (voicing == 0.618) voicing = 0.618033988749894848204586;
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//special case: we will do a perfect golden ratio as the default 0.618
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//just 'cos magic universality sauce (seriously, it seems a sweetspot)
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if (overallscale > 0.0) voicing /= overallscale;
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//translate to desired sample rate, 44.1K is the base
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if (voicing < 0.0) voicing = 0.0;
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if (voicing > 1.0) voicing = 1.0;
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//some insanity checking
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double inverseHardness = 1.0 - voicing;
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bool clipEngage = false;
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double wet = E;
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//removed extra dry variable
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double drySampleL;
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double drySampleR;
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double inputSampleL;
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double inputSampleR;
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while (--sampleFrames >= 0)
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{
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inputSampleL = *in1;
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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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drySampleL = inputSampleL;
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drySampleR = inputSampleR;
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if (inputGain != 1.0)
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{
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inputSampleL *= inputGain;
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inputSampleR *= inputGain;
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clipEngage = true;
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//if we are altering gain we will always process
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}
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else
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{
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clipEngage = false;
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//if we are not touching gain, we will bypass unless
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//a clip is actively being softened.
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}
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if (inputSampleL > posTargetL)
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{
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inputSampleL = (lastSampleL * voicing) + (posThreshold * inverseHardness);
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posTargetL = inputSampleL;
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clipEngage = true;
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}
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else
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{
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posTargetL = posThreshold;
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}
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if (inputSampleR > posTargetR)
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{
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inputSampleR = (lastSampleR * voicing) + (posThreshold * inverseHardness);
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posTargetR = inputSampleR;
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clipEngage = true;
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}
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else
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{
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posTargetR = posThreshold;
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}
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if (inputSampleL < negTargetL)
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{
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inputSampleL = (lastSampleL * voicing) + (negThreshold * inverseHardness);
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negTargetL = inputSampleL;
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clipEngage = true;
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}
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else {
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negTargetL = negThreshold;
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}
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if (inputSampleR < negTargetR)
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{
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inputSampleR = (lastSampleR * voicing) + (negThreshold * inverseHardness);
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negTargetR = inputSampleR;
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clipEngage = true;
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}
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else {
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negTargetR = negThreshold;
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}
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lastSampleL = inputSampleL;
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lastSampleR = inputSampleR;
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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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if (clipEngage == false)
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{
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inputSampleL = *in1;
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inputSampleR = *in2;
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}
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//fall back to raw passthrough if at all possible
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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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} |