mirror of
https://github.com/airwindows/airwindows.git
synced 2026-05-16 06:05:55 -06:00
345 lines
No EOL
10 KiB
C++
Executable file
345 lines
No EOL
10 KiB
C++
Executable file
/* ========================================
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* Pressure4 - Pressure4.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Pressure4_H
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#include "Pressure4.h"
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#endif
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void Pressure4::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
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{
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float* inputL = inputs[0];
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float* inputR = inputs[1];
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float* outputL = outputs[0];
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float* outputR = 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 threshold = 1.0 - (A * 0.95);
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double muMakeupGain = 1.0 / threshold;
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//gain settings around threshold
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double release = pow((1.28-B),5)*32768.0;
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release /= overallscale;
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double fastest = sqrt(release);
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//speed settings around release
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double bridgerectifier;
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double coefficient;
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double inputSense;
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double mewiness = (C*2.0)-1.0;
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double unmewiness;
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double outputGain = D;
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bool positivemu;
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if (mewiness >= 0)
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{
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positivemu = true;
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unmewiness = 1.0-mewiness;
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}
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else
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{
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positivemu = false;
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mewiness = -mewiness;
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unmewiness = 1.0-mewiness;
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}
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// µ µ µ µ µ µ µ µ µ µ µ µ is the kitten song o/~
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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 = *inputL;
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inputSampleR = *inputR;
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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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inputSampleL = inputSampleL * muMakeupGain;
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inputSampleR = inputSampleR * muMakeupGain;
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inputSense = fabs(inputSampleL);
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if (fabs(inputSampleR) > inputSense)
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inputSense = fabs(inputSampleR);
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//we will take the greater of either channel and just use that, then apply the result
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//to both stereo channels.
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if (flip)
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{
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if (inputSense > threshold)
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{
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muVary = threshold / inputSense;
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muAttack = sqrt(fabs(muSpeedA));
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muCoefficientA = muCoefficientA * (muAttack-1.0);
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if (muVary < threshold)
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{
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muCoefficientA = muCoefficientA + threshold;
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}
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else
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{
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muCoefficientA = muCoefficientA + muVary;
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}
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muCoefficientA = muCoefficientA / muAttack;
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}
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else
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{
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muCoefficientA = muCoefficientA * ((muSpeedA * muSpeedA)-1.0);
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muCoefficientA = muCoefficientA + 1.0;
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muCoefficientA = muCoefficientA / (muSpeedA * muSpeedA);
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}
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muNewSpeed = muSpeedA * (muSpeedA-1);
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muNewSpeed = muNewSpeed + fabs(inputSense*release)+fastest;
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muSpeedA = muNewSpeed / muSpeedA;
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}
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else
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{
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if (inputSense > threshold)
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{
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muVary = threshold / inputSense;
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muAttack = sqrt(fabs(muSpeedB));
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muCoefficientB = muCoefficientB * (muAttack-1);
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if (muVary < threshold)
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{
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muCoefficientB = muCoefficientB + threshold;
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}
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else
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{
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muCoefficientB = muCoefficientB + muVary;
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}
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muCoefficientB = muCoefficientB / muAttack;
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}
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else
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{
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muCoefficientB = muCoefficientB * ((muSpeedB * muSpeedB)-1.0);
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muCoefficientB = muCoefficientB + 1.0;
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muCoefficientB = muCoefficientB / (muSpeedB * muSpeedB);
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}
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muNewSpeed = muSpeedB * (muSpeedB-1);
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muNewSpeed = muNewSpeed + fabs(inputSense*release)+fastest;
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muSpeedB = muNewSpeed / muSpeedB;
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}
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//got coefficients, adjusted speeds
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if (flip)
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{
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if (positivemu) coefficient = pow(muCoefficientA,2);
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else coefficient = sqrt(muCoefficientA);
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coefficient = (coefficient*mewiness)+(muCoefficientA*unmewiness);
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inputSampleL *= coefficient;
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inputSampleR *= coefficient;
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}
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else
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{
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if (positivemu) coefficient = pow(muCoefficientB,2);
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else coefficient = sqrt(muCoefficientB);
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coefficient = (coefficient*mewiness)+(muCoefficientB*unmewiness);
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inputSampleL *= coefficient;
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inputSampleR *= coefficient;
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}
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//applied compression with vari-vari-µ-µ-µ-µ-µ-µ-is-the-kitten-song o/~
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//applied gain correction to control output level- tends to constrain sound rather than inflate it
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if (outputGain != 1.0) {
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inputSampleL *= outputGain;
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inputSampleR *= outputGain;
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}
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bridgerectifier = fabs(inputSampleL);
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.0;
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else bridgerectifier = sin(bridgerectifier);
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if (inputSampleL > 0){inputSampleL = bridgerectifier;}
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else {inputSampleL = -bridgerectifier;}
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//second stage of overdrive to prevent overs and allow bloody loud extremeness
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bridgerectifier = fabs(inputSampleR);
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.0;
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else bridgerectifier = sin(bridgerectifier);
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if (inputSampleR > 0){inputSampleR = bridgerectifier;}
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else {inputSampleR = -bridgerectifier;}
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//second stage of overdrive to prevent overs and allow bloody loud extremeness
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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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*outputL = inputSampleL;
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*outputR = inputSampleR;
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*inputL++;
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*inputR++;
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*outputL++;
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*outputR++;
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}
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}
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void Pressure4::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
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{
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double* inputL = inputs[0];
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double* inputR = inputs[1];
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double* outputL = outputs[0];
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double* outputR = 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 threshold = 1.0 - (A * 0.95);
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double muMakeupGain = 1.0 / threshold;
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//gain settings around threshold
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double release = pow((1.28-B),5)*32768.0;
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release /= overallscale;
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double fastest = sqrt(release);
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//speed settings around release
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double bridgerectifier;
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double coefficient;
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double inputSense;
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double mewiness = (C*2.0)-1.0;
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double unmewiness;
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double outputGain = D;
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bool positivemu;
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if (mewiness >= 0)
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{
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positivemu = true;
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unmewiness = 1.0-mewiness;
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}
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else
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{
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positivemu = false;
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mewiness = -mewiness;
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unmewiness = 1.0-mewiness;
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}
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// µ µ µ µ µ µ µ µ µ µ µ µ is the kitten song o/~
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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 = *inputL;
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inputSampleR = *inputR;
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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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inputSampleL = inputSampleL * muMakeupGain;
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inputSampleR = inputSampleR * muMakeupGain;
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inputSense = fabs(inputSampleL);
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if (fabs(inputSampleR) > inputSense)
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inputSense = fabs(inputSampleR);
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//we will take the greater of either channel and just use that, then apply the result
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//to both stereo channels.
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if (flip)
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{
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if (inputSense > threshold)
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{
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muVary = threshold / inputSense;
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muAttack = sqrt(fabs(muSpeedA));
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muCoefficientA = muCoefficientA * (muAttack-1.0);
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if (muVary < threshold)
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{
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muCoefficientA = muCoefficientA + threshold;
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}
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else
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{
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muCoefficientA = muCoefficientA + muVary;
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}
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muCoefficientA = muCoefficientA / muAttack;
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}
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else
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{
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muCoefficientA = muCoefficientA * ((muSpeedA * muSpeedA)-1.0);
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muCoefficientA = muCoefficientA + 1.0;
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muCoefficientA = muCoefficientA / (muSpeedA * muSpeedA);
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}
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muNewSpeed = muSpeedA * (muSpeedA-1);
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muNewSpeed = muNewSpeed + fabs(inputSense*release)+fastest;
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muSpeedA = muNewSpeed / muSpeedA;
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}
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else
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{
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if (inputSense > threshold)
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{
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muVary = threshold / inputSense;
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muAttack = sqrt(fabs(muSpeedB));
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muCoefficientB = muCoefficientB * (muAttack-1);
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if (muVary < threshold)
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{
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muCoefficientB = muCoefficientB + threshold;
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}
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else
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{
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muCoefficientB = muCoefficientB + muVary;
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}
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muCoefficientB = muCoefficientB / muAttack;
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}
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else
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{
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muCoefficientB = muCoefficientB * ((muSpeedB * muSpeedB)-1.0);
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muCoefficientB = muCoefficientB + 1.0;
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muCoefficientB = muCoefficientB / (muSpeedB * muSpeedB);
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}
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muNewSpeed = muSpeedB * (muSpeedB-1);
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muNewSpeed = muNewSpeed + fabs(inputSense*release)+fastest;
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muSpeedB = muNewSpeed / muSpeedB;
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}
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//got coefficients, adjusted speeds
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if (flip)
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{
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if (positivemu) coefficient = pow(muCoefficientA,2);
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else coefficient = sqrt(muCoefficientA);
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coefficient = (coefficient*mewiness)+(muCoefficientA*unmewiness);
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inputSampleL *= coefficient;
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inputSampleR *= coefficient;
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}
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else
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{
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if (positivemu) coefficient = pow(muCoefficientB,2);
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else coefficient = sqrt(muCoefficientB);
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coefficient = (coefficient*mewiness)+(muCoefficientB*unmewiness);
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inputSampleL *= coefficient;
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inputSampleR *= coefficient;
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}
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//applied compression with vari-vari-µ-µ-µ-µ-µ-µ-is-the-kitten-song o/~
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//applied gain correction to control output level- tends to constrain sound rather than inflate it
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if (outputGain != 1.0) {
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inputSampleL *= outputGain;
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inputSampleR *= outputGain;
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}
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bridgerectifier = fabs(inputSampleL);
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.0;
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else bridgerectifier = sin(bridgerectifier);
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if (inputSampleL > 0){inputSampleL = bridgerectifier;}
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else {inputSampleL = -bridgerectifier;}
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//second stage of overdrive to prevent overs and allow bloody loud extremeness
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bridgerectifier = fabs(inputSampleR);
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.0;
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else bridgerectifier = sin(bridgerectifier);
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if (inputSampleR > 0){inputSampleR = bridgerectifier;}
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else {inputSampleR = -bridgerectifier;}
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//second stage of overdrive to prevent overs and allow bloody loud extremeness
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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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*outputL = inputSampleL;
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*outputR = inputSampleR;
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*inputL++;
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*inputR++;
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*outputL++;
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*outputR++;
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}
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} |