mirror of
https://github.com/airwindows/airwindows.git
synced 2026-05-15 14:16:00 -06:00
146 lines
4.9 KiB
C++
Executable file
146 lines
4.9 KiB
C++
Executable file
/* ========================================
|
|
* PowerSag2 - PowerSag2.h
|
|
* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
|
|
* ======================================== */
|
|
|
|
#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)
|
|
{
|
|
double inputSampleL = *in1;
|
|
double inputSampleR = *in2;
|
|
if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
|
|
if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
|
|
double drySampleL = inputSampleL;
|
|
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);
|
|
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
|
|
inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
|
|
frexpf((float)inputSampleR, &expon);
|
|
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
|
|
inputSampleR += ((double(fpdR)-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)
|
|
{
|
|
double inputSampleL = *in1;
|
|
double inputSampleR = *in2;
|
|
if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
|
|
if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
|
|
double drySampleL = inputSampleL;
|
|
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);
|
|
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
|
|
//inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
|
|
//frexp((double)inputSampleR, &expon);
|
|
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
|
|
//inputSampleR += ((double(fpdR)-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++;
|
|
}
|
|
}
|