mirror of
https://github.com/airwindows/airwindows.git
synced 2026-05-17 06:05:56 -06:00
305 lines
No EOL
9.5 KiB
C++
Executable file
305 lines
No EOL
9.5 KiB
C++
Executable file
/* ========================================
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* HardVacuum - HardVacuum.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __HardVacuum_H
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#include "HardVacuum.h"
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#endif
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void HardVacuum::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 multistage = A*2.0;
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if (multistage > 1) multistage *= multistage;
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//WE MAKE LOUD NOISE! RAWWWK!
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double countdown;
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double warmth = B;
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double invwarmth = 1.0-warmth;
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warmth /= 1.57079633;
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double aura = C*3.1415926;
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double out = D;
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double wet = E;
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double drive;
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double positive;
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double negative;
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double bridgerectifierL;
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double bridgerectifierR;
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double skewL;
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double skewR;
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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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skewL = (inputSampleL - lastSampleL);
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skewR = (inputSampleR - lastSampleR);
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lastSampleL = inputSampleL;
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lastSampleR = inputSampleR;
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//skew will be direction/angle
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bridgerectifierL = fabs(skewL);
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bridgerectifierR = fabs(skewR);
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if (bridgerectifierL > 3.1415926) bridgerectifierL = 3.1415926;
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if (bridgerectifierR > 3.1415926) bridgerectifierR = 3.1415926;
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//for skew we want it to go to zero effect again, so we use full range of the sine
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bridgerectifierL = sin(bridgerectifierL);
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bridgerectifierR = sin(bridgerectifierR);
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if (skewL > 0) skewL = bridgerectifierL*aura;
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else skewL = -bridgerectifierL*aura;
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if (skewR > 0) skewR = bridgerectifierR*aura;
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else skewR = -bridgerectifierR*aura;
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//skew is now sined and clamped and then re-amplified again
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skewL *= inputSampleL;
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skewR *= inputSampleR;
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//cools off sparkliness and crossover distortion
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skewL *= 1.557079633;
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skewR *= 1.557079633;
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//crank up the gain on this so we can make it sing
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//We're doing all this here so skew isn't incremented by each stage
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countdown = multistage;
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//begin the torture
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while (countdown > 0)
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{
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if (countdown > 1.0) drive = 1.557079633;
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else drive = countdown * (1.0+(0.557079633*invwarmth));
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//full crank stages followed by the proportional one
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//whee. 1 at full warmth to 1.5570etc at no warmth
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positive = drive - warmth;
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negative = drive + warmth;
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//set up things so we can do repeated iterations, assuming that
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//wet is always going to be 0-1 as in the previous plug.
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bridgerectifierL = fabs(inputSampleL);
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bridgerectifierR = fabs(inputSampleR);
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bridgerectifierL += skewL;
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bridgerectifierR += skewR;
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//apply it here so we don't overload
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if (bridgerectifierL > 1.57079633) bridgerectifierL = 1.57079633;
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if (bridgerectifierR > 1.57079633) bridgerectifierR = 1.57079633;
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bridgerectifierL = sin(bridgerectifierL);
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bridgerectifierR = sin(bridgerectifierR);
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//the distortion section.
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bridgerectifierL *= drive;
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bridgerectifierR *= drive;
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bridgerectifierL += skewL;
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bridgerectifierR += skewR;
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//again
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if (bridgerectifierL > 1.57079633) bridgerectifierL = 1.57079633;
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if (bridgerectifierR > 1.57079633) bridgerectifierR = 1.57079633;
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bridgerectifierL = sin(bridgerectifierL);
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bridgerectifierR = sin(bridgerectifierR);
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if (inputSampleL > 0)
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{
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inputSampleL = (inputSampleL*(1-positive+skewL))+(bridgerectifierL*(positive+skewL));
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}
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else
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{
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inputSampleL = (inputSampleL*(1-negative+skewL))-(bridgerectifierL*(negative+skewL));
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}
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if (inputSampleR > 0)
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{
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inputSampleR = (inputSampleR*(1-positive+skewR))+(bridgerectifierR*(positive+skewR));
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}
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else
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{
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inputSampleR = (inputSampleR*(1-negative+skewR))-(bridgerectifierR*(negative+skewR));
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}
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//blend according to positive and negative controls
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countdown -= 1.0;
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//step down a notch and repeat.
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}
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if (out != 1.0) {
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inputSampleL *= out;
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inputSampleR *= out;
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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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//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 HardVacuum::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 multistage = A*2.0;
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if (multistage > 1) multistage *= multistage;
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//WE MAKE LOUD NOISE! RAWWWK!
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double countdown;
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double warmth = B;
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double invwarmth = 1.0-warmth;
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warmth /= 1.57079633;
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double aura = C*3.1415926;
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double out = D;
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double wet = E;
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double drive;
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double positive;
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double negative;
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double bridgerectifierL;
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double bridgerectifierR;
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double skewL;
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double skewR;
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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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skewL = (inputSampleL - lastSampleL);
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skewR = (inputSampleR - lastSampleR);
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lastSampleL = inputSampleL;
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lastSampleR = inputSampleR;
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//skew will be direction/angle
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bridgerectifierL = fabs(skewL);
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bridgerectifierR = fabs(skewR);
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if (bridgerectifierL > 3.1415926) bridgerectifierL = 3.1415926;
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if (bridgerectifierR > 3.1415926) bridgerectifierR = 3.1415926;
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//for skew we want it to go to zero effect again, so we use full range of the sine
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bridgerectifierL = sin(bridgerectifierL);
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bridgerectifierR = sin(bridgerectifierR);
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if (skewL > 0) skewL = bridgerectifierL*aura;
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else skewL = -bridgerectifierL*aura;
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if (skewR > 0) skewR = bridgerectifierR*aura;
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else skewR = -bridgerectifierR*aura;
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//skew is now sined and clamped and then re-amplified again
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skewL *= inputSampleL;
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skewR *= inputSampleR;
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//cools off sparkliness and crossover distortion
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skewL *= 1.557079633;
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skewR *= 1.557079633;
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//crank up the gain on this so we can make it sing
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//We're doing all this here so skew isn't incremented by each stage
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countdown = multistage;
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//begin the torture
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while (countdown > 0)
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{
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if (countdown > 1.0) drive = 1.557079633;
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else drive = countdown * (1.0+(0.557079633*invwarmth));
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//full crank stages followed by the proportional one
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//whee. 1 at full warmth to 1.5570etc at no warmth
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positive = drive - warmth;
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negative = drive + warmth;
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//set up things so we can do repeated iterations, assuming that
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//wet is always going to be 0-1 as in the previous plug.
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bridgerectifierL = fabs(inputSampleL);
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bridgerectifierR = fabs(inputSampleR);
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bridgerectifierL += skewL;
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bridgerectifierR += skewR;
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//apply it here so we don't overload
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if (bridgerectifierL > 1.57079633) bridgerectifierL = 1.57079633;
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if (bridgerectifierR > 1.57079633) bridgerectifierR = 1.57079633;
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bridgerectifierL = sin(bridgerectifierL);
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bridgerectifierR = sin(bridgerectifierR);
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//the distortion section.
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bridgerectifierL *= drive;
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bridgerectifierR *= drive;
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bridgerectifierL += skewL;
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bridgerectifierR += skewR;
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//again
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if (bridgerectifierL > 1.57079633) bridgerectifierL = 1.57079633;
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if (bridgerectifierR > 1.57079633) bridgerectifierR = 1.57079633;
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bridgerectifierL = sin(bridgerectifierL);
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bridgerectifierR = sin(bridgerectifierR);
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if (inputSampleL > 0)
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{
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inputSampleL = (inputSampleL*(1-positive+skewL))+(bridgerectifierL*(positive+skewL));
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}
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else
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{
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inputSampleL = (inputSampleL*(1-negative+skewL))-(bridgerectifierL*(negative+skewL));
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}
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if (inputSampleR > 0)
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{
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inputSampleR = (inputSampleR*(1-positive+skewR))+(bridgerectifierR*(positive+skewR));
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}
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else
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{
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inputSampleR = (inputSampleR*(1-negative+skewR))-(bridgerectifierR*(negative+skewR));
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}
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//blend according to positive and negative controls
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countdown -= 1.0;
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//step down a notch and repeat.
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}
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if (out != 1.0) {
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inputSampleL *= out;
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inputSampleR *= out;
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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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//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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} |