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https://github.com/airwindows/airwindows.git
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236 lines
No EOL
7.3 KiB
C++
Executable file
236 lines
No EOL
7.3 KiB
C++
Executable file
/* ========================================
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* Wider - Wider.h
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* Copyright (c) 2016 airwindows, All rights reserved
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* ======================================== */
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#ifndef __Wider_H
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#include "Wider.h"
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#endif
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void Wider::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 inputSampleL;
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double inputSampleR;
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double drySampleL;
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double drySampleR;
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double mid;
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double side;
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double out;
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double densityside = (A*2.0)-1.0;
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double densitymid = (B*2.0)-1.0;
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double wet = C;
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//removed extra dry variable
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wet *= 0.5; //we make mid-side by adding/subtracting both channels into each channel
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//and that's why we gotta divide it by 2: otherwise everything's doubled. So, premultiply it to save an extra 'math'
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double offset = (densityside-densitymid)/2;
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if (offset > 0) offset = sin(offset);
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if (offset < 0) offset = -sin(-offset);
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offset = -(pow(offset,4) * 20 * overallscale);
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int near = (int)floor(fabs(offset));
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double farLevel = fabs(offset) - near;
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int far = near + 1;
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double nearLevel = 1.0 - farLevel;
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double bridgerectifier;
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//interpolating the sample
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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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//assign working variables
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mid = inputSampleL + inputSampleR;
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side = inputSampleL - inputSampleR;
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//assign mid and side. Now, High Impact code
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if (densityside != 0.0)
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{
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out = fabs(densityside);
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bridgerectifier = fabs(side)*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 (densityside > 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 (side > 0) side = (side*(1-out))+(bridgerectifier*out);
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else side = (side*(1-out))-(bridgerectifier*out);
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//blend according to density control
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}
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if (densitymid != 0.0)
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{
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out = fabs(densitymid);
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bridgerectifier = fabs(mid)*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 (densitymid > 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 (mid > 0) mid = (mid*(1-out))+(bridgerectifier*out);
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else mid = (mid*(1-out))-(bridgerectifier*out);
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//blend according to density control
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}
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if (count < 1 || count > 2048) {count = 2048;}
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if (offset > 0)
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{
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p[count+2048] = p[count] = mid;
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mid = p[count+near]*nearLevel;
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mid += p[count+far]*farLevel;
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}
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if (offset < 0)
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{
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p[count+2048] = p[count] = side;
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side = p[count+near]*nearLevel;
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side += p[count+far]*farLevel;
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}
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count -= 1;
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inputSampleL = (drySampleL * dry) + ((mid+side) * wet);
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inputSampleR = (drySampleR * dry) + ((mid-side) * wet);
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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 Wider::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 inputSampleL;
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double inputSampleR;
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double drySampleL;
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double drySampleR;
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double mid;
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double side;
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double out;
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double densityside = (A*2.0)-1.0;
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double densitymid = (B*2.0)-1.0;
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double wet = C;
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//removed extra dry variable
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wet *= 0.5; //we make mid-side by adding/subtracting both channels into each channel
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//and that's why we gotta divide it by 2: otherwise everything's doubled. So, premultiply it to save an extra 'math'
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double offset = (densityside-densitymid)/2;
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if (offset > 0) offset = sin(offset);
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if (offset < 0) offset = -sin(-offset);
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offset = -(pow(offset,4) * 20 * overallscale);
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int near = (int)floor(fabs(offset));
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double farLevel = fabs(offset) - near;
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int far = near + 1;
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double nearLevel = 1.0 - farLevel;
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double bridgerectifier;
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//interpolating the sample
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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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//assign working variables
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mid = inputSampleL + inputSampleR;
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side = inputSampleL - inputSampleR;
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//assign mid and side. Now, High Impact code
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if (densityside != 0.0)
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{
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out = fabs(densityside);
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bridgerectifier = fabs(side)*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 (densityside > 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 (side > 0) side = (side*(1-out))+(bridgerectifier*out);
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else side = (side*(1-out))-(bridgerectifier*out);
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//blend according to density control
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}
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if (densitymid != 0.0)
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{
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out = fabs(densitymid);
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bridgerectifier = fabs(mid)*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 (densitymid > 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 (mid > 0) mid = (mid*(1-out))+(bridgerectifier*out);
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else mid = (mid*(1-out))-(bridgerectifier*out);
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//blend according to density control
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}
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if (count < 1 || count > 2048) {count = 2048;}
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if (offset > 0)
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{
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p[count+2048] = p[count] = mid;
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mid = p[count+near]*nearLevel;
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mid += p[count+far]*farLevel;
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}
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if (offset < 0)
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{
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p[count+2048] = p[count] = side;
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side = p[count+near]*nearLevel;
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side += p[count+far]*farLevel;
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}
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count -= 1;
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inputSampleL = (drySampleL * dry) + ((mid+side) * wet);
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inputSampleR = (drySampleR * dry) + ((mid-side) * wet);
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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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} |