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256 lines
No EOL
8.4 KiB
C++
Executable file
256 lines
No EOL
8.4 KiB
C++
Executable file
/* ========================================
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* Density - Density.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Density_H
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#include "Density.h"
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#endif
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void Density::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 density = (A*5.0)-1.0;
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double iirAmount = pow(B,3)/overallscale;
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double output = C;
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double wet = D;
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double dry = 1.0-wet;
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double bridgerectifier;
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double out = fabs(density);
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density = density * fabs(density);
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double count;
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double inputSampleL;
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double inputSampleR;
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double drySampleL;
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double drySampleR;
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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 (fpFlip)
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{
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iirSampleAL = (iirSampleAL * (1.0 - iirAmount)) + (inputSampleL * iirAmount);
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inputSampleL -= iirSampleAL;
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iirSampleAR = (iirSampleAR * (1.0 - iirAmount)) + (inputSampleR * iirAmount);
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inputSampleR -= iirSampleAR;
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}
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else
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{
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iirSampleBL = (iirSampleBL * (1.0 - iirAmount)) + (inputSampleL * iirAmount);
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inputSampleL -= iirSampleBL;
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iirSampleBR = (iirSampleBR * (1.0 - iirAmount)) + (inputSampleR * iirAmount);
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inputSampleR -= iirSampleBR;
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}
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//highpass section
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fpFlip = !fpFlip;
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count = density;
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while (count > 1.0)
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{
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bridgerectifier = fabs(inputSampleL)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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//max value for sine function
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bridgerectifier = sin(bridgerectifier);
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if (inputSampleL > 0.0) inputSampleL = bridgerectifier;
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else inputSampleL = -bridgerectifier;
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bridgerectifier = fabs(inputSampleR)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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//max value for sine function
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bridgerectifier = sin(bridgerectifier);
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if (inputSampleR > 0.0) inputSampleR = bridgerectifier;
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else inputSampleR = -bridgerectifier;
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count = count - 1.0;
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}
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//we have now accounted for any really high density settings.
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while (out > 1.0) out = out - 1.0;
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bridgerectifier = fabs(inputSampleL)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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//max value for sine function
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if (density > 0) bridgerectifier = sin(bridgerectifier);
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else bridgerectifier = 1-cos(bridgerectifier);
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//produce either boosted or starved version
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if (inputSampleL > 0) inputSampleL = (inputSampleL*(1-out))+(bridgerectifier*out);
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else inputSampleL = (inputSampleL*(1-out))-(bridgerectifier*out);
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//blend according to density control
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bridgerectifier = fabs(inputSampleR)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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//max value for sine function
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if (density > 0) bridgerectifier = sin(bridgerectifier);
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else bridgerectifier = 1-cos(bridgerectifier);
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//produce either boosted or starved version
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if (inputSampleR > 0) inputSampleR = (inputSampleR*(1.0-out))+(bridgerectifier*out);
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else inputSampleR = (inputSampleR*(1.0-out))-(bridgerectifier*out);
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//blend according to density control
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if (output < 1.0) {
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inputSampleL *= output;
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inputSampleR *= output;
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}
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if (wet < 1.0) {
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inputSampleL = (drySampleL * dry)+(inputSampleL * wet);
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inputSampleR = (drySampleR * dry)+(inputSampleR * wet);
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}
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//nice little output stage template: if we have another scale of floating point
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//number, we really don't want to meaninglessly multiply that by 1.0.
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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 Density::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 density = (A*5.0)-1.0;
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double iirAmount = pow(B,3)/overallscale;
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double output = C;
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double wet = D;
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double dry = 1.0-wet;
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double bridgerectifier;
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double out = fabs(density);
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density = density * fabs(density);
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double count;
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double inputSampleL;
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double inputSampleR;
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double drySampleL;
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double drySampleR;
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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 (fpFlip)
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{
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iirSampleAL = (iirSampleAL * (1.0 - iirAmount)) + (inputSampleL * iirAmount);
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inputSampleL -= iirSampleAL;
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iirSampleAR = (iirSampleAR * (1.0 - iirAmount)) + (inputSampleR * iirAmount);
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inputSampleR -= iirSampleAR;
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}
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else
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{
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iirSampleBL = (iirSampleBL * (1.0 - iirAmount)) + (inputSampleL * iirAmount);
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inputSampleL -= iirSampleBL;
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iirSampleBR = (iirSampleBR * (1.0 - iirAmount)) + (inputSampleR * iirAmount);
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inputSampleR -= iirSampleBR;
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}
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//highpass section
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fpFlip = !fpFlip;
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count = density;
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while (count > 1.0)
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{
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bridgerectifier = fabs(inputSampleL)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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//max value for sine function
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bridgerectifier = sin(bridgerectifier);
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if (inputSampleL > 0.0) inputSampleL = bridgerectifier;
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else inputSampleL = -bridgerectifier;
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bridgerectifier = fabs(inputSampleR)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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//max value for sine function
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bridgerectifier = sin(bridgerectifier);
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if (inputSampleR > 0.0) inputSampleR = bridgerectifier;
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else inputSampleR = -bridgerectifier;
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count = count - 1.0;
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}
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//we have now accounted for any really high density settings.
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while (out > 1.0) out = out - 1.0;
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bridgerectifier = fabs(inputSampleL)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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//max value for sine function
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if (density > 0) bridgerectifier = sin(bridgerectifier);
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else bridgerectifier = 1-cos(bridgerectifier);
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//produce either boosted or starved version
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if (inputSampleL > 0) inputSampleL = (inputSampleL*(1-out))+(bridgerectifier*out);
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else inputSampleL = (inputSampleL*(1-out))-(bridgerectifier*out);
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//blend according to density control
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bridgerectifier = fabs(inputSampleR)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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//max value for sine function
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if (density > 0) bridgerectifier = sin(bridgerectifier);
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else bridgerectifier = 1-cos(bridgerectifier);
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//produce either boosted or starved version
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if (inputSampleR > 0) inputSampleR = (inputSampleR*(1.0-out))+(bridgerectifier*out);
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else inputSampleR = (inputSampleR*(1.0-out))-(bridgerectifier*out);
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//blend according to density control
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if (output < 1.0) {
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inputSampleL *= output;
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inputSampleR *= output;
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}
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if (wet < 1.0) {
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inputSampleL = (drySampleL * dry)+(inputSampleL * wet);
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inputSampleR = (drySampleR * dry)+(inputSampleR * wet);
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}
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//nice little output stage template: if we have another scale of floating point
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//number, we really don't want to meaninglessly multiply that by 1.0.
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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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} |