mirror of
https://github.com/airwindows/airwindows.git
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256 lines
No EOL
8.6 KiB
C++
Executable file
256 lines
No EOL
8.6 KiB
C++
Executable file
/* ========================================
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* Console5Buss - Console5Buss.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Console5Buss_H
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#include "Console5Buss.h"
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#endif
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void Console5Buss::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 inputgain = A;
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double differenceL;
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double differenceR;
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double nearZeroL;
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double nearZeroR;
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double servoTrim = 0.0000001 / overallscale;
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double bassTrim = 0.005 / overallscale;
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double inputSampleL;
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double inputSampleR;
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if (settingchase != inputgain) {
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chasespeed *= 2.0;
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settingchase = inputgain;
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}
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if (chasespeed > 2500.0) chasespeed = 2500.0;
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if (gainchase < 0.0) gainchase = inputgain;
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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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chasespeed *= 0.9999;
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chasespeed -= 0.01;
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if (chasespeed < 350.0) chasespeed = 350.0;
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//we have our chase speed compensated for recent fader activity
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gainchase = (((gainchase*chasespeed)+inputgain)/(chasespeed+1.0));
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//gainchase is chasing the target, as a simple multiply gain factor
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if (1.0 != gainchase) {
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inputSampleL *= gainchase;
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inputSampleR *= gainchase;
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}
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//done with trim control
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if (inputSampleL > 1.0) inputSampleL = 1.0;
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if (inputSampleL < -1.0) inputSampleL = -1.0;
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inputSampleL = asin(inputSampleL);
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//amplitude aspect
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if (inputSampleR > 1.0) inputSampleR = 1.0;
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if (inputSampleR < -1.0) inputSampleR = -1.0;
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inputSampleR = asin(inputSampleR);
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//amplitude aspect
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differenceL = lastSampleBussL - inputSampleL;
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differenceR = lastSampleBussR - inputSampleR;
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lastSampleBussL = inputSampleL;
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lastSampleBussR = inputSampleR;
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//derive slew part off direct sample measurement + from last time
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if (differenceL > 1.57079633) differenceL = 1.57079633;
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if (differenceL < -1.57079633) differenceL = -1.57079633;
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if (differenceR > 1.57079633) differenceR = 1.57079633;
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if (differenceR < -1.57079633) differenceR = -1.57079633;
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differenceL = lastFXBussL + sin(differenceL);
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differenceR = lastFXBussR + sin(differenceR);
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//we're about to use this twice and then not use difference again, so we'll reuse it
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//enhance slew is arcsin(): cutting it back is sin()
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iirCorrectL += inputSampleL - differenceL;
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iirCorrectR += inputSampleR - differenceR;
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inputSampleL = differenceL;
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inputSampleR = differenceR;
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//apply the slew to stored value: can develop DC offsets.
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//store the change we made so we can dial it back
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lastFXBussL = inputSampleL;
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lastFXBussR = inputSampleR;
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if (lastFXBussL > 1.0) lastFXBussL = 1.0;
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if (lastFXBussL < -1.0) lastFXBussL = -1.0;
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if (lastFXBussR > 1.0) lastFXBussR = 1.0;
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if (lastFXBussR < -1.0) lastFXBussR = -1.0;
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//build new signal off what was present in output last time
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nearZeroL = pow(fabs(fabs(lastFXBussL)-1.0), 2);
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nearZeroR = pow(fabs(fabs(lastFXBussR)-1.0), 2);
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//if the sample is very near zero this number is higher.
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if (iirCorrectL > 0) iirCorrectL -= servoTrim;
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if (iirCorrectL < 0) iirCorrectL += servoTrim;
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if (iirCorrectR > 0) iirCorrectR -= servoTrim;
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if (iirCorrectR < 0) iirCorrectR += servoTrim;
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//cut back the servo by which we're pulling back the DC
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lastFXBussL += (iirCorrectL * 0.0000005);
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lastFXBussR += (iirCorrectR * 0.0000005);
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//apply the servo to the stored value, pulling back the DC
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lastFXBussL *= (1.0 - (nearZeroL * bassTrim));
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lastFXBussR *= (1.0 - (nearZeroR * bassTrim));
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//this cuts back the DC offset directly, relative to how near zero we are
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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 Console5Buss::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 inputgain = A;
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double differenceL;
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double differenceR;
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double nearZeroL;
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double nearZeroR;
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double servoTrim = 0.0000001 / overallscale;
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double bassTrim = 0.005 / overallscale;
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double inputSampleL;
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double inputSampleR;
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if (settingchase != inputgain) {
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chasespeed *= 2.0;
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settingchase = inputgain;
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}
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if (chasespeed > 2500.0) chasespeed = 2500.0;
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if (gainchase < 0.0) gainchase = inputgain;
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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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chasespeed *= 0.9999;
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chasespeed -= 0.01;
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if (chasespeed < 350.0) chasespeed = 350.0;
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//we have our chase speed compensated for recent fader activity
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gainchase = (((gainchase*chasespeed)+inputgain)/(chasespeed+1.0));
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//gainchase is chasing the target, as a simple multiply gain factor
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if (1.0 != gainchase) {
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inputSampleL *= gainchase;
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inputSampleR *= gainchase;
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}
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//done with trim control
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if (inputSampleL > 1.0) inputSampleL = 1.0;
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if (inputSampleL < -1.0) inputSampleL = -1.0;
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inputSampleL = asin(inputSampleL);
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//amplitude aspect
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if (inputSampleR > 1.0) inputSampleR = 1.0;
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if (inputSampleR < -1.0) inputSampleR = -1.0;
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inputSampleR = asin(inputSampleR);
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//amplitude aspect
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differenceL = lastSampleBussL - inputSampleL;
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differenceR = lastSampleBussR - inputSampleR;
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lastSampleBussL = inputSampleL;
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lastSampleBussR = inputSampleR;
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//derive slew part off direct sample measurement + from last time
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if (differenceL > 1.57079633) differenceL = 1.57079633;
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if (differenceL < -1.57079633) differenceL = -1.57079633;
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if (differenceR > 1.57079633) differenceR = 1.57079633;
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if (differenceR < -1.57079633) differenceR = -1.57079633;
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differenceL = lastFXBussL + sin(differenceL);
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differenceR = lastFXBussR + sin(differenceR);
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//we're about to use this twice and then not use difference again, so we'll reuse it
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//enhance slew is arcsin(): cutting it back is sin()
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iirCorrectL += inputSampleL - differenceL;
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iirCorrectR += inputSampleR - differenceR;
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inputSampleL = differenceL;
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inputSampleR = differenceR;
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//apply the slew to stored value: can develop DC offsets.
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//store the change we made so we can dial it back
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lastFXBussL = inputSampleL;
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lastFXBussR = inputSampleR;
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if (lastFXBussL > 1.0) lastFXBussL = 1.0;
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if (lastFXBussL < -1.0) lastFXBussL = -1.0;
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if (lastFXBussR > 1.0) lastFXBussR = 1.0;
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if (lastFXBussR < -1.0) lastFXBussR = -1.0;
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//build new signal off what was present in output last time
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nearZeroL = pow(fabs(fabs(lastFXBussL)-1.0), 2);
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nearZeroR = pow(fabs(fabs(lastFXBussR)-1.0), 2);
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//if the sample is very near zero this number is higher.
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if (iirCorrectL > 0) iirCorrectL -= servoTrim;
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if (iirCorrectL < 0) iirCorrectL += servoTrim;
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if (iirCorrectR > 0) iirCorrectR -= servoTrim;
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if (iirCorrectR < 0) iirCorrectR += servoTrim;
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//cut back the servo by which we're pulling back the DC
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lastFXBussL += (iirCorrectL * 0.0000005);
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lastFXBussR += (iirCorrectR * 0.0000005);
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//apply the servo to the stored value, pulling back the DC
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lastFXBussL *= (1.0 - (nearZeroL * bassTrim));
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lastFXBussR *= (1.0 - (nearZeroR * bassTrim));
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//this cuts back the DC offset directly, relative to how near zero we are
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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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} |