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170 lines
7.1 KiB
C++
Executable file
170 lines
7.1 KiB
C++
Executable file
/* ========================================
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* Console8SubOut - Console8SubOut.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Console8SubOut_H
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#include "Console8SubOut.h"
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#endif
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void Console8SubOut::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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VstInt32 inFramesToProcess = sampleFrames; //vst doesn't give us this as a separate variable so we'll make it
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inTrimA = inTrimB; inTrimB = A*2.0;
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//0.5 is unity gain, and we can attenuate to silence or boost slightly over 12dB
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//into softclipping overdrive.
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if (getSampleRate() > 49000.0) hsr = true; else hsr = false;
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fix[fix_freq] = 24000.0 / getSampleRate();
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fix[fix_reso] = 1.20361562;
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double K = tan(M_PI * fix[fix_freq]); //lowpass
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double norm = 1.0 / (1.0 + K / fix[fix_reso] + K * K);
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fix[fix_a0] = K * K * norm;
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fix[fix_a1] = 2.0 * fix[fix_a0];
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fix[fix_a2] = fix[fix_a0];
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fix[fix_b1] = 2.0 * (K * K - 1.0) * norm;
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fix[fix_b2] = (1.0 - K / fix[fix_reso] + K * K) * norm;
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//this is the fixed biquad distributed anti-aliasing filter
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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 position = (double)sampleFrames/inFramesToProcess;
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double inTrim = (inTrimA*position)+(inTrimB*(1.0-position));
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//input trim smoothed to cut out zipper noise
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inputSampleL *= inTrim;
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if (inputSampleL > 1.57079633) inputSampleL = 1.57079633; if (inputSampleL < -1.57079633) inputSampleL = -1.57079633;
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inputSampleL = sin(inputSampleL);
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//Console8 gain stage clips at exactly 1.0 post-sin()
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inputSampleR *= inTrim;
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if (inputSampleR > 1.57079633) inputSampleR = 1.57079633; if (inputSampleR < -1.57079633) inputSampleR = -1.57079633;
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inputSampleR = sin(inputSampleR);
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//Console8 gain stage clips at exactly 1.0 post-sin()
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if (hsr){
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double outSample = (inputSampleL * fix[fix_a0]) + fix[fix_sL1];
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fix[fix_sL1] = (inputSampleL * fix[fix_a1]) - (outSample * fix[fix_b1]) + fix[fix_sL2];
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fix[fix_sL2] = (inputSampleL * fix[fix_a2]) - (outSample * fix[fix_b2]);
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inputSampleL = outSample;
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outSample = (inputSampleR * fix[fix_a0]) + fix[fix_sR1];
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fix[fix_sR1] = (inputSampleR * fix[fix_a1]) - (outSample * fix[fix_b1]) + fix[fix_sR2];
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fix[fix_sR2] = (inputSampleR * fix[fix_a2]) - (outSample * fix[fix_b2]);
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inputSampleR = outSample;
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} //fixed biquad filtering ultrasonics
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inputSampleL *= inTrim;
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if (inputSampleL > 1.57079633) inputSampleL = 1.57079633; if (inputSampleL < -1.57079633) inputSampleL = -1.57079633;
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inputSampleL = sin(inputSampleL);
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//Console8 gain stage clips at exactly 1.0 post-sin()
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inputSampleR *= inTrim;
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if (inputSampleR > 1.57079633) inputSampleR = 1.57079633; if (inputSampleR < -1.57079633) inputSampleR = -1.57079633;
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inputSampleR = sin(inputSampleR);
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//Console8 gain stage clips at exactly 1.0 post-sin()
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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 Console8SubOut::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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VstInt32 inFramesToProcess = sampleFrames; //vst doesn't give us this as a separate variable so we'll make it
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inTrimA = inTrimB; inTrimB = A*2.0;
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//0.5 is unity gain, and we can attenuate to silence or boost slightly over 12dB
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//into softclipping overdrive.
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if (getSampleRate() > 49000.0) hsr = true; else hsr = false;
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fix[fix_freq] = 24000.0 / getSampleRate();
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fix[fix_reso] = 1.20361562;
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double K = tan(M_PI * fix[fix_freq]); //lowpass
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double norm = 1.0 / (1.0 + K / fix[fix_reso] + K * K);
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fix[fix_a0] = K * K * norm;
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fix[fix_a1] = 2.0 * fix[fix_a0];
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fix[fix_a2] = fix[fix_a0];
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fix[fix_b1] = 2.0 * (K * K - 1.0) * norm;
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fix[fix_b2] = (1.0 - K / fix[fix_reso] + K * K) * norm;
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//this is the fixed biquad distributed anti-aliasing filter
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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 position = (double)sampleFrames/inFramesToProcess;
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double inTrim = (inTrimA*position)+(inTrimB*(1.0-position));
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//input trim smoothed to cut out zipper noise
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inputSampleL *= inTrim;
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if (inputSampleL > 1.57079633) inputSampleL = 1.57079633; if (inputSampleL < -1.57079633) inputSampleL = -1.57079633;
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inputSampleL = sin(inputSampleL);
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//Console8 gain stage clips at exactly 1.0 post-sin()
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inputSampleR *= inTrim;
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if (inputSampleR > 1.57079633) inputSampleR = 1.57079633; if (inputSampleR < -1.57079633) inputSampleR = -1.57079633;
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inputSampleR = sin(inputSampleR);
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//Console8 gain stage clips at exactly 1.0 post-sin()
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if (hsr){
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double outSample = (inputSampleL * fix[fix_a0]) + fix[fix_sL1];
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fix[fix_sL1] = (inputSampleL * fix[fix_a1]) - (outSample * fix[fix_b1]) + fix[fix_sL2];
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fix[fix_sL2] = (inputSampleL * fix[fix_a2]) - (outSample * fix[fix_b2]);
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inputSampleL = outSample;
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outSample = (inputSampleR * fix[fix_a0]) + fix[fix_sR1];
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fix[fix_sR1] = (inputSampleR * fix[fix_a1]) - (outSample * fix[fix_b1]) + fix[fix_sR2];
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fix[fix_sR2] = (inputSampleR * fix[fix_a2]) - (outSample * fix[fix_b2]);
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inputSampleR = outSample;
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} //fixed biquad filtering ultrasonics
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inputSampleL *= inTrim;
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if (inputSampleL > 1.57079633) inputSampleL = 1.57079633; if (inputSampleL < -1.57079633) inputSampleL = -1.57079633;
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inputSampleL = sin(inputSampleL);
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//Console8 gain stage clips at exactly 1.0 post-sin()
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inputSampleR *= inTrim;
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if (inputSampleR > 1.57079633) inputSampleR = 1.57079633; if (inputSampleR < -1.57079633) inputSampleR = -1.57079633;
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inputSampleR = sin(inputSampleR);
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//Console8 gain stage clips at exactly 1.0 post-sin()
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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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