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/* ========================================
* PowerSag2 - PowerSag2.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __PowerSag2_H
#include "PowerSag2.h"
#endif
void PowerSag2::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
double depth = pow(A,4);
int offset = (int)(depth * 16383) + 1;
double wet = (B*2.0)-1.0;
while (--sampleFrames >= 0)
{
long double inputSampleL = *in1;
long double inputSampleR = *in2;
if (fabs(inputSampleL)<1.18e-37) inputSampleL = fpd * 1.18e-37;
if (fabs(inputSampleR)<1.18e-37) inputSampleR = fpd * 1.18e-37;
long double drySampleL = inputSampleL;
long double drySampleR = inputSampleR;
if (gcount < 0 || gcount > 16384) {gcount = 16384;}
dL[gcount] = fabs(inputSampleL);
dR[gcount] = fabs(inputSampleR);
controlL += dL[gcount];
controlR += dR[gcount];
controlL -= dL[gcount+offset-((gcount+offset > 16384)?16384:0)];
controlR -= dR[gcount+offset-((gcount+offset > 16384)?16384:0)];
gcount--;
if (controlL > offset) controlL = offset; if (controlL < 0.0) controlL = 0.0;
if (controlR > offset) controlR = offset; if (controlR < 0.0) controlR = 0.0;
double burst = inputSampleL * (controlL / sqrt(offset));
double clamp = inputSampleL / ((burst == 0.0)?1.0:burst);
if (clamp > 1.0) clamp = 1.0; if (clamp < 0.0) clamp = 0.0;
inputSampleL *= clamp;
double difference = drySampleL - inputSampleL;
if (wet < 0.0) drySampleL *= (wet+1.0);
inputSampleL = drySampleL - (difference * wet);
burst = inputSampleR * (controlR / sqrt(offset));
clamp = inputSampleR / ((burst == 0.0)?1.0:burst);
if (clamp > 1.0) clamp = 1.0; if (clamp < 0.0) clamp = 0.0;
inputSampleR *= clamp;
difference = drySampleR - inputSampleR;
if (wet < 0.0) drySampleR *= (wet+1.0);
inputSampleR = drySampleR - (difference * wet);
//begin 32 bit stereo floating point dither
int expon; frexpf((float)inputSampleL, &expon);
fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
inputSampleL += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
frexpf((float)inputSampleR, &expon);
fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
inputSampleR += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
//end 32 bit stereo floating point dither
*out1 = inputSampleL;
*out2 = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}
void PowerSag2::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
double depth = pow(A,4);
int offset = (int)(depth * 16383) + 1;
double wet = (B*2.0)-1.0;
while (--sampleFrames >= 0)
{
long double inputSampleL = *in1;
long double inputSampleR = *in2;
if (fabs(inputSampleL)<1.18e-43) inputSampleL = fpd * 1.18e-43;
if (fabs(inputSampleR)<1.18e-43) inputSampleR = fpd * 1.18e-43;
long double drySampleL = inputSampleL;
long double drySampleR = inputSampleR;
if (gcount < 0 || gcount > 16384) {gcount = 16384;}
dL[gcount] = fabs(inputSampleL);
dR[gcount] = fabs(inputSampleR);
controlL += dL[gcount];
controlR += dR[gcount];
controlL -= dL[gcount+offset-((gcount+offset > 16384)?16384:0)];
controlR -= dR[gcount+offset-((gcount+offset > 16384)?16384:0)];
gcount--;
if (controlL > offset) controlL = offset; if (controlL < 0.0) controlL = 0.0;
if (controlR > offset) controlR = offset; if (controlR < 0.0) controlR = 0.0;
double burst = inputSampleL * (controlL / sqrt(offset));
double clamp = inputSampleL / ((burst == 0.0)?1.0:burst);
if (clamp > 1.0) clamp = 1.0; if (clamp < 0.0) clamp = 0.0;
inputSampleL *= clamp;
double difference = drySampleL - inputSampleL;
if (wet < 0.0) drySampleL *= (wet+1.0);
inputSampleL = drySampleL - (difference * wet);
burst = inputSampleR * (controlR / sqrt(offset));
clamp = inputSampleR / ((burst == 0.0)?1.0:burst);
if (clamp > 1.0) clamp = 1.0; if (clamp < 0.0) clamp = 0.0;
inputSampleR *= clamp;
difference = drySampleR - inputSampleR;
if (wet < 0.0) drySampleR *= (wet+1.0);
inputSampleR = drySampleR - (difference * wet);
//begin 64 bit stereo floating point dither
int expon; frexp((double)inputSampleL, &expon);
fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
inputSampleL += ((double(fpd)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
frexp((double)inputSampleR, &expon);
fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
inputSampleR += ((double(fpd)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
//end 64 bit stereo floating point dither
*out1 = inputSampleL;
*out2 = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}
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