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146 lines
4.9 KiB
C++
Executable file
146 lines
4.9 KiB
C++
Executable file
/* ========================================
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* PowerSag2 - PowerSag2.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __PowerSag2_H
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#include "PowerSag2.h"
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#endif
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void PowerSag2::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 depth = pow(A,4);
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int offset = (int)(depth * 16383) + 1;
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double wet = (B*2.0)-1.0;
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while (--sampleFrames >= 0)
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{
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double inputSampleL = *in1;
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double 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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double drySampleL = inputSampleL;
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double drySampleR = inputSampleR;
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if (gcount < 0 || gcount > 16384) {gcount = 16384;}
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dL[gcount] = fabs(inputSampleL);
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dR[gcount] = fabs(inputSampleR);
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controlL += dL[gcount];
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controlR += dR[gcount];
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controlL -= dL[gcount+offset-((gcount+offset > 16384)?16384:0)];
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controlR -= dR[gcount+offset-((gcount+offset > 16384)?16384:0)];
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gcount--;
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if (controlL > offset) controlL = offset; if (controlL < 0.0) controlL = 0.0;
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if (controlR > offset) controlR = offset; if (controlR < 0.0) controlR = 0.0;
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double burst = inputSampleL * (controlL / sqrt(offset));
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double clamp = inputSampleL / ((burst == 0.0)?1.0:burst);
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if (clamp > 1.0) clamp = 1.0; if (clamp < 0.0) clamp = 0.0;
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inputSampleL *= clamp;
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double difference = drySampleL - inputSampleL;
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if (wet < 0.0) drySampleL *= (wet+1.0);
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inputSampleL = drySampleL - (difference * wet);
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burst = inputSampleR * (controlR / sqrt(offset));
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clamp = inputSampleR / ((burst == 0.0)?1.0:burst);
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if (clamp > 1.0) clamp = 1.0; if (clamp < 0.0) clamp = 0.0;
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inputSampleR *= clamp;
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difference = drySampleR - inputSampleR;
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if (wet < 0.0) drySampleR *= (wet+1.0);
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inputSampleR = drySampleR - (difference * 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 PowerSag2::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 depth = pow(A,4);
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int offset = (int)(depth * 16383) + 1;
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double wet = (B*2.0)-1.0;
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while (--sampleFrames >= 0)
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{
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double inputSampleL = *in1;
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double 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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double drySampleL = inputSampleL;
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double drySampleR = inputSampleR;
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if (gcount < 0 || gcount > 16384) {gcount = 16384;}
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dL[gcount] = fabs(inputSampleL);
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dR[gcount] = fabs(inputSampleR);
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controlL += dL[gcount];
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controlR += dR[gcount];
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controlL -= dL[gcount+offset-((gcount+offset > 16384)?16384:0)];
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controlR -= dR[gcount+offset-((gcount+offset > 16384)?16384:0)];
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gcount--;
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if (controlL > offset) controlL = offset; if (controlL < 0.0) controlL = 0.0;
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if (controlR > offset) controlR = offset; if (controlR < 0.0) controlR = 0.0;
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double burst = inputSampleL * (controlL / sqrt(offset));
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double clamp = inputSampleL / ((burst == 0.0)?1.0:burst);
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if (clamp > 1.0) clamp = 1.0; if (clamp < 0.0) clamp = 0.0;
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inputSampleL *= clamp;
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double difference = drySampleL - inputSampleL;
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if (wet < 0.0) drySampleL *= (wet+1.0);
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inputSampleL = drySampleL - (difference * wet);
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burst = inputSampleR * (controlR / sqrt(offset));
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clamp = inputSampleR / ((burst == 0.0)?1.0:burst);
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if (clamp > 1.0) clamp = 1.0; if (clamp < 0.0) clamp = 0.0;
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inputSampleR *= clamp;
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difference = drySampleR - inputSampleR;
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if (wet < 0.0) drySampleR *= (wet+1.0);
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inputSampleR = drySampleR - (difference * 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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}
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