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airwindows/plugins/MacSignedVST/ConsoleHBuss/source/ConsoleHBussProc.cpp
Christopher Johnson 760c7abf1d DeBez
2025-12-20 18:32:37 -05:00

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/* ========================================
* ConsoleHBuss - ConsoleHBuss.h
* Copyright (c) airwindows, Airwindows uses the MIT license
* ======================================== */
#ifndef __ConsoleHBuss_H
#include "ConsoleHBuss.h"
#endif
void ConsoleHBuss::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
VstInt32 inFramesToProcess = sampleFrames; //vst doesn't give us this as a separate variable so we'll make it
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= getSampleRate();
int spacing = floor(overallscale*2.0);
if (spacing < 2) spacing = 2; if (spacing > 32) spacing = 32;
double trebleGain = (HIG-0.5)*2.0;
trebleGain = 1.0+(trebleGain*fabs(trebleGain)*fabs(trebleGain));
double midGain = (MID-0.5)*2.0;
midGain = 1.0+(midGain*fabs(midGain)*fabs(midGain));
double bassGain = (LOW-0.5)*2.0;
bassGain = 1.0+(bassGain*fabs(bassGain)*fabs(bassGain));
//separate from filtering stage, this is amplitude, centered on 1.0 unity gain
double highCoef = 0.0;
double lowCoef = 0.0;
double omega = 0.0;
double biqK = 0.0;
double norm = 0.0;
bool eqOff = (trebleGain == 1.0 && midGain == 1.0 && bassGain == 1.0);
//we get to completely bypass EQ if we're truly not using it. The mechanics of it mean that
//it cancels out to bit-identical anyhow, but we get to skip the calculation
if (!eqOff) {
//SmoothEQ3 is how to get 3rd order steepness at very low CPU.
//because sample rate varies, you could also vary the crossovers
//you can't vary Q because math is simplified to take advantage of
//how the accurate Q value for this filter is always exactly 1.0.
highFast[biq_freq] = (4000.0/getSampleRate());
omega = 2.0*M_PI*(4000.0/getSampleRate()); //mid-high crossover freq
biqK = 2.0 - cos(omega);
highCoef = -sqrt(biqK*biqK - 1.0) + biqK;
lowFast[biq_freq] = (200.0/getSampleRate());
omega = 2.0*M_PI*(200.0/getSampleRate()); //low-mid crossover freq
biqK = 2.0 - cos(omega);
lowCoef = -sqrt(biqK*biqK - 1.0) + biqK;
//exponential IIR filter as part of an accurate 3rd order Butterworth filter
biqK = tan(M_PI * highFast[biq_freq]);
norm = 1.0 / (1.0 + biqK + biqK*biqK);
highFast[biq_a0] = biqK * biqK * norm;
highFast[biq_a1] = 2.0 * highFast[biq_a0];
highFast[biq_a2] = highFast[biq_a0];
highFast[biq_b1] = 2.0 * (biqK*biqK - 1.0) * norm;
highFast[biq_b2] = (1.0 - biqK + biqK*biqK) * norm;
biqK = tan(M_PI * lowFast[biq_freq]);
norm = 1.0 / (1.0 + biqK + biqK*biqK);
lowFast[biq_a0] = biqK * biqK * norm;
lowFast[biq_a1] = 2.0 * lowFast[biq_a0];
lowFast[biq_a2] = lowFast[biq_a0];
lowFast[biq_b1] = 2.0 * (biqK*biqK - 1.0) * norm;
lowFast[biq_b2] = (1.0 - biqK + biqK*biqK) * norm;
//custom biquad setup with Q = 1.0 gets to omit some divides
}
//SmoothEQ3
double bezCThresh = pow(1.0-THR, 6.0) * 8.0;
double bezRez = pow(1.0-THR, 12.360679774997898) / overallscale;
double sloRez = pow(1.0-THR,10.0) / overallscale;
sloRez = fmin(fmax(sloRez,0.00001),1.0);
bezRez = fmin(fmax(bezRez,0.00001),1.0);
//Dynamics2
highpass[hilp_freq] = ((pow(HIP,3)*24000.0)+10.0)/getSampleRate();
if (highpass[hilp_freq] > 0.495) highpass[hilp_freq] = 0.495;
bool highpassEngage = true; if (HIP == 0.0) highpassEngage = false;
lowpass[hilp_freq] = ((pow(LOP,3)*24000.0)+10.0)/getSampleRate();
if (lowpass[hilp_freq] > 0.495) lowpass[hilp_freq] = 0.495;
bool lowpassEngage = true; if (LOP == 1.0) lowpassEngage = false;
highpass[hilp_aA0] = highpass[hilp_aB0];
highpass[hilp_aA1] = highpass[hilp_aB1];
highpass[hilp_bA1] = highpass[hilp_bB1];
highpass[hilp_bA2] = highpass[hilp_bB2];
highpass[hilp_cA0] = highpass[hilp_cB0];
highpass[hilp_cA1] = highpass[hilp_cB1];
highpass[hilp_dA1] = highpass[hilp_dB1];
highpass[hilp_dA2] = highpass[hilp_dB2];
highpass[hilp_eA0] = highpass[hilp_eB0];
highpass[hilp_eA1] = highpass[hilp_eB1];
highpass[hilp_fA1] = highpass[hilp_fB1];
highpass[hilp_fA2] = highpass[hilp_fB2];
lowpass[hilp_aA0] = lowpass[hilp_aB0];
lowpass[hilp_aA1] = lowpass[hilp_aB1];
lowpass[hilp_bA1] = lowpass[hilp_bB1];
lowpass[hilp_bA2] = lowpass[hilp_bB2];
lowpass[hilp_cA0] = lowpass[hilp_cB0];
lowpass[hilp_cA1] = lowpass[hilp_cB1];
lowpass[hilp_dA1] = lowpass[hilp_dB1];
lowpass[hilp_dA2] = lowpass[hilp_dB2];
lowpass[hilp_eA0] = lowpass[hilp_eB0];
lowpass[hilp_eA1] = lowpass[hilp_eB1];
lowpass[hilp_fA1] = lowpass[hilp_fB1];
lowpass[hilp_fA2] = lowpass[hilp_fB2];
//previous run through the buffer is still in the filter, so we move it
//to the A section and now it's the new starting point.
//On the buss, highpass and lowpass are isolators meant to be moved,
//so they are interpolated where the channels are not
biqK = tan(M_PI * highpass[hilp_freq]); //highpass
norm = 1.0 / (1.0 + biqK / 1.93185165 + biqK * biqK);
highpass[hilp_aB0] = norm;
highpass[hilp_aB1] = -2.0 * highpass[hilp_aB0];
highpass[hilp_bB1] = 2.0 * (biqK * biqK - 1.0) * norm;
highpass[hilp_bB2] = (1.0 - biqK / 1.93185165 + biqK * biqK) * norm;
norm = 1.0 / (1.0 + biqK / 0.70710678 + biqK * biqK);
highpass[hilp_cB0] = norm;
highpass[hilp_cB1] = -2.0 * highpass[hilp_cB0];
highpass[hilp_dB1] = 2.0 * (biqK * biqK - 1.0) * norm;
highpass[hilp_dB2] = (1.0 - biqK / 0.70710678 + biqK * biqK) * norm;
norm = 1.0 / (1.0 + biqK / 0.51763809 + biqK * biqK);
highpass[hilp_eB0] = norm;
highpass[hilp_eB1] = -2.0 * highpass[hilp_eB0];
highpass[hilp_fB1] = 2.0 * (biqK * biqK - 1.0) * norm;
highpass[hilp_fB2] = (1.0 - biqK / 0.51763809 + biqK * biqK) * norm;
biqK = tan(M_PI * lowpass[hilp_freq]); //lowpass
norm = 1.0 / (1.0 + biqK / 1.93185165 + biqK * biqK);
lowpass[hilp_aB0] = biqK * biqK * norm;
lowpass[hilp_aB1] = 2.0 * lowpass[hilp_aB0];
lowpass[hilp_bB1] = 2.0 * (biqK * biqK - 1.0) * norm;
lowpass[hilp_bB2] = (1.0 - biqK / 1.93185165 + biqK * biqK) * norm;
norm = 1.0 / (1.0 + biqK / 0.70710678 + biqK * biqK);
lowpass[hilp_cB0] = biqK * biqK * norm;
lowpass[hilp_cB1] = 2.0 * lowpass[hilp_cB0];
lowpass[hilp_dB1] = 2.0 * (biqK * biqK - 1.0) * norm;
lowpass[hilp_dB2] = (1.0 - biqK / 0.70710678 + biqK * biqK) * norm;
norm = 1.0 / (1.0 + biqK / 0.51763809 + biqK * biqK);
lowpass[hilp_eB0] = biqK * biqK * norm;
lowpass[hilp_eB1] = 2.0 * lowpass[hilp_eB0];
lowpass[hilp_fB1] = 2.0 * (biqK * biqK - 1.0) * norm;
lowpass[hilp_fB2] = (1.0 - biqK / 0.51763809 + biqK * biqK) * norm;
if (highpass[hilp_aA0] == 0.0) { // if we have just started, start directly with raw info
highpass[hilp_aA0] = highpass[hilp_aB0];
highpass[hilp_aA1] = highpass[hilp_aB1];
highpass[hilp_bA1] = highpass[hilp_bB1];
highpass[hilp_bA2] = highpass[hilp_bB2];
highpass[hilp_cA0] = highpass[hilp_cB0];
highpass[hilp_cA1] = highpass[hilp_cB1];
highpass[hilp_dA1] = highpass[hilp_dB1];
highpass[hilp_dA2] = highpass[hilp_dB2];
highpass[hilp_eA0] = highpass[hilp_eB0];
highpass[hilp_eA1] = highpass[hilp_eB1];
highpass[hilp_fA1] = highpass[hilp_fB1];
highpass[hilp_fA2] = highpass[hilp_fB2];
lowpass[hilp_aA0] = lowpass[hilp_aB0];
lowpass[hilp_aA1] = lowpass[hilp_aB1];
lowpass[hilp_bA1] = lowpass[hilp_bB1];
lowpass[hilp_bA2] = lowpass[hilp_bB2];
lowpass[hilp_cA0] = lowpass[hilp_cB0];
lowpass[hilp_cA1] = lowpass[hilp_cB1];
lowpass[hilp_dA1] = lowpass[hilp_dB1];
lowpass[hilp_dA2] = lowpass[hilp_dB2];
lowpass[hilp_eA0] = lowpass[hilp_eB0];
lowpass[hilp_eA1] = lowpass[hilp_eB1];
lowpass[hilp_fA1] = lowpass[hilp_fB1];
lowpass[hilp_fA2] = lowpass[hilp_fB2];
}
panA = panB; panB = PAN*1.57079633;
inTrimA = inTrimB; inTrimB = FAD*2.0;
//Console
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;
const double temp = (double)sampleFrames/inFramesToProcess;
highpass[hilp_a0] = (highpass[hilp_aA0]*temp)+(highpass[hilp_aB0]*(1.0-temp));
highpass[hilp_a1] = (highpass[hilp_aA1]*temp)+(highpass[hilp_aB1]*(1.0-temp));
highpass[hilp_b1] = (highpass[hilp_bA1]*temp)+(highpass[hilp_bB1]*(1.0-temp));
highpass[hilp_b2] = (highpass[hilp_bA2]*temp)+(highpass[hilp_bB2]*(1.0-temp));
highpass[hilp_c0] = (highpass[hilp_cA0]*temp)+(highpass[hilp_cB0]*(1.0-temp));
highpass[hilp_c1] = (highpass[hilp_cA1]*temp)+(highpass[hilp_cB1]*(1.0-temp));
highpass[hilp_d1] = (highpass[hilp_dA1]*temp)+(highpass[hilp_dB1]*(1.0-temp));
highpass[hilp_d2] = (highpass[hilp_dA2]*temp)+(highpass[hilp_dB2]*(1.0-temp));
highpass[hilp_e0] = (highpass[hilp_eA0]*temp)+(highpass[hilp_eB0]*(1.0-temp));
highpass[hilp_e1] = (highpass[hilp_eA1]*temp)+(highpass[hilp_eB1]*(1.0-temp));
highpass[hilp_f1] = (highpass[hilp_fA1]*temp)+(highpass[hilp_fB1]*(1.0-temp));
highpass[hilp_f2] = (highpass[hilp_fA2]*temp)+(highpass[hilp_fB2]*(1.0-temp));
lowpass[hilp_a0] = (lowpass[hilp_aA0]*temp)+(lowpass[hilp_aB0]*(1.0-temp));
lowpass[hilp_a1] = (lowpass[hilp_aA1]*temp)+(lowpass[hilp_aB1]*(1.0-temp));
lowpass[hilp_b1] = (lowpass[hilp_bA1]*temp)+(lowpass[hilp_bB1]*(1.0-temp));
lowpass[hilp_b2] = (lowpass[hilp_bA2]*temp)+(lowpass[hilp_bB2]*(1.0-temp));
lowpass[hilp_c0] = (lowpass[hilp_cA0]*temp)+(lowpass[hilp_cB0]*(1.0-temp));
lowpass[hilp_c1] = (lowpass[hilp_cA1]*temp)+(lowpass[hilp_cB1]*(1.0-temp));
lowpass[hilp_d1] = (lowpass[hilp_dA1]*temp)+(lowpass[hilp_dB1]*(1.0-temp));
lowpass[hilp_d2] = (lowpass[hilp_dA2]*temp)+(lowpass[hilp_dB2]*(1.0-temp));
lowpass[hilp_e0] = (lowpass[hilp_eA0]*temp)+(lowpass[hilp_eB0]*(1.0-temp));
lowpass[hilp_e1] = (lowpass[hilp_eA1]*temp)+(lowpass[hilp_eB1]*(1.0-temp));
lowpass[hilp_f1] = (lowpass[hilp_fA1]*temp)+(lowpass[hilp_fB1]*(1.0-temp));
lowpass[hilp_f2] = (lowpass[hilp_fA2]*temp)+(lowpass[hilp_fB2]*(1.0-temp));
if (highpassEngage) { //distributed Highpass
highpass[hilp_temp] = (inputSampleL*highpass[hilp_a0])+highpass[hilp_aL1];
highpass[hilp_aL1] = (inputSampleL*highpass[hilp_a1])-(highpass[hilp_temp]*highpass[hilp_b1])+highpass[hilp_aL2];
highpass[hilp_aL2] = (inputSampleL*highpass[hilp_a0])-(highpass[hilp_temp]*highpass[hilp_b2]); inputSampleL = highpass[hilp_temp];
highpass[hilp_temp] = (inputSampleR*highpass[hilp_a0])+highpass[hilp_aR1];
highpass[hilp_aR1] = (inputSampleR*highpass[hilp_a1])-(highpass[hilp_temp]*highpass[hilp_b1])+highpass[hilp_aR2];
highpass[hilp_aR2] = (inputSampleR*highpass[hilp_a0])-(highpass[hilp_temp]*highpass[hilp_b2]); inputSampleR = highpass[hilp_temp];
} else highpass[hilp_aR1] = highpass[hilp_aR2] = highpass[hilp_aL1] = highpass[hilp_aL2] = 0.0;
if (lowpassEngage) { //distributed Lowpass
lowpass[hilp_temp] = (inputSampleL*lowpass[hilp_a0])+lowpass[hilp_aL1];
lowpass[hilp_aL1] = (inputSampleL*lowpass[hilp_a1])-(lowpass[hilp_temp]*lowpass[hilp_b1])+lowpass[hilp_aL2];
lowpass[hilp_aL2] = (inputSampleL*lowpass[hilp_a0])-(lowpass[hilp_temp]*lowpass[hilp_b2]); inputSampleL = lowpass[hilp_temp];
lowpass[hilp_temp] = (inputSampleR*lowpass[hilp_a0])+lowpass[hilp_aR1];
lowpass[hilp_aR1] = (inputSampleR*lowpass[hilp_a1])-(lowpass[hilp_temp]*lowpass[hilp_b1])+lowpass[hilp_aR2];
lowpass[hilp_aR2] = (inputSampleR*lowpass[hilp_a0])-(lowpass[hilp_temp]*lowpass[hilp_b2]); inputSampleR = lowpass[hilp_temp];
} else lowpass[hilp_aR1] = lowpass[hilp_aR2] = lowpass[hilp_aL1] = lowpass[hilp_aL2] = 0.0;
//first Highpass/Lowpass blocks aliasing before the nonlinearity of ConsoleXBuss and Parametric
if (inputSampleL > 1.0) inputSampleL = 1.0;
else if (inputSampleL > 0.0) inputSampleL = -expm1((log1p(-inputSampleL) * 0.6180339887498949));
if (inputSampleL < -1.0) inputSampleL = -1.0;
else if (inputSampleL < 0.0) inputSampleL = expm1((log1p(inputSampleL) * 0.6180339887498949));
if (inputSampleR > 1.0) inputSampleR = 1.0;
else if (inputSampleR > 0.0) inputSampleR = -expm1((log1p(-inputSampleR) * 0.6180339887498949));
if (inputSampleR < -1.0) inputSampleR = -1.0;
else if (inputSampleR < 0.0) inputSampleR = expm1((log1p(inputSampleR) * 0.6180339887498949));
if (highpassEngage) { //distributed Highpass
highpass[hilp_temp] = (inputSampleL*highpass[hilp_c0])+highpass[hilp_cL1];
highpass[hilp_cL1] = (inputSampleL*highpass[hilp_c1])-(highpass[hilp_temp]*highpass[hilp_d1])+highpass[hilp_cL2];
highpass[hilp_cL2] = (inputSampleL*highpass[hilp_c0])-(highpass[hilp_temp]*highpass[hilp_d2]); inputSampleL = highpass[hilp_temp];
highpass[hilp_temp] = (inputSampleR*highpass[hilp_c0])+highpass[hilp_cR1];
highpass[hilp_cR1] = (inputSampleR*highpass[hilp_c1])-(highpass[hilp_temp]*highpass[hilp_d1])+highpass[hilp_cR2];
highpass[hilp_cR2] = (inputSampleR*highpass[hilp_c0])-(highpass[hilp_temp]*highpass[hilp_d2]); inputSampleR = highpass[hilp_temp];
} else highpass[hilp_cR1] = highpass[hilp_cR2] = highpass[hilp_cL1] = highpass[hilp_cL2] = 0.0;
if (lowpassEngage) { //distributed Lowpass
lowpass[hilp_temp] = (inputSampleL*lowpass[hilp_c0])+lowpass[hilp_cL1];
lowpass[hilp_cL1] = (inputSampleL*lowpass[hilp_c1])-(lowpass[hilp_temp]*lowpass[hilp_d1])+lowpass[hilp_cL2];
lowpass[hilp_cL2] = (inputSampleL*lowpass[hilp_c0])-(lowpass[hilp_temp]*lowpass[hilp_d2]); inputSampleL = lowpass[hilp_temp];
lowpass[hilp_temp] = (inputSampleR*lowpass[hilp_c0])+lowpass[hilp_cR1];
lowpass[hilp_cR1] = (inputSampleR*lowpass[hilp_c1])-(lowpass[hilp_temp]*lowpass[hilp_d1])+lowpass[hilp_cR2];
lowpass[hilp_cR2] = (inputSampleR*lowpass[hilp_c0])-(lowpass[hilp_temp]*lowpass[hilp_d2]); inputSampleR = lowpass[hilp_temp];
} else lowpass[hilp_cR1] = lowpass[hilp_cR2] = lowpass[hilp_cL1] = lowpass[hilp_cL2] = 0.0;
//another stage of Highpass/Lowpass before bringing in the parametric bands
if (!eqOff) {
double trebleFastL = inputSampleL;
double outSample = (trebleFastL * highFast[biq_a0]) + highFast[biq_sL1];
highFast[biq_sL1] = (trebleFastL * highFast[biq_a1]) - (outSample * highFast[biq_b1]) + highFast[biq_sL2];
highFast[biq_sL2] = (trebleFastL * highFast[biq_a2]) - (outSample * highFast[biq_b2]);
double midFastL = outSample; trebleFastL -= midFastL;
outSample = (midFastL * lowFast[biq_a0]) + lowFast[biq_sL1];
lowFast[biq_sL1] = (midFastL * lowFast[biq_a1]) - (outSample * lowFast[biq_b1]) + lowFast[biq_sL2];
lowFast[biq_sL2] = (midFastL * lowFast[biq_a2]) - (outSample * lowFast[biq_b2]);
double bassFastL = outSample; midFastL -= bassFastL;
trebleFastL = (bassFastL*bassGain) + (midFastL*midGain) + (trebleFastL*trebleGain);
//first stage of two crossovers is biquad of exactly 1.0 Q
highFastLIIR = (highFastLIIR*highCoef) + (trebleFastL*(1.0-highCoef));
midFastL = highFastLIIR; trebleFastL -= midFastL;
lowFastLIIR = (lowFastLIIR*lowCoef) + (midFastL*(1.0-lowCoef));
bassFastL = lowFastLIIR; midFastL -= bassFastL;
inputSampleL = (bassFastL*bassGain) + (midFastL*midGain) + (trebleFastL*trebleGain);
//second stage of two crossovers is the exponential filters
//this produces a slightly steeper Butterworth filter very cheaply
double trebleFastR = inputSampleR;
outSample = (trebleFastR * highFast[biq_a0]) + highFast[biq_sR1];
highFast[biq_sR1] = (trebleFastR * highFast[biq_a1]) - (outSample * highFast[biq_b1]) + highFast[biq_sR2];
highFast[biq_sR2] = (trebleFastR * highFast[biq_a2]) - (outSample * highFast[biq_b2]);
double midFastR = outSample; trebleFastR -= midFastR;
outSample = (midFastR * lowFast[biq_a0]) + lowFast[biq_sR1];
lowFast[biq_sR1] = (midFastR * lowFast[biq_a1]) - (outSample * lowFast[biq_b1]) + lowFast[biq_sR2];
lowFast[biq_sR2] = (midFastR * lowFast[biq_a2]) - (outSample * lowFast[biq_b2]);
double bassFastR = outSample; midFastR -= bassFastR;
trebleFastR = (bassFastR*bassGain) + (midFastR*midGain) + (trebleFastR*trebleGain);
//first stage of two crossovers is biquad of exactly 1.0 Q
highFastRIIR = (highFastRIIR*highCoef) + (trebleFastR*(1.0-highCoef));
midFastR = highFastRIIR; trebleFastR -= midFastR;
lowFastRIIR = (lowFastRIIR*lowCoef) + (midFastR*(1.0-lowCoef));
bassFastR = lowFastRIIR; midFastR -= bassFastR;
inputSampleR = (bassFastR*bassGain) + (midFastR*midGain) + (trebleFastR*trebleGain);
//second stage of two crossovers is the exponential filters
//this produces a slightly steeper Butterworth filter very cheaply
}
//SmoothEQ3
if (bezCThresh > 0.0) {
inputSampleL *= ((bezCThresh*0.5)+1.0);
inputSampleR *= ((bezCThresh*0.5)+1.0);
bezCompF[bez_cycle] += bezRez;
bezCompF[bez_Ctrl] += (fmax(fabs(inputSampleL),fabs(inputSampleR)) * bezRez);
if (bezCompF[bez_cycle] > 1.0) {
bezCompF[bez_cycle] -= 1.0;
bezCompF[bez_C] = bezCompF[bez_B];
bezCompF[bez_B] = bezCompF[bez_A];
bezCompF[bez_A] = bezCompF[bez_Ctrl];
bezCompF[bez_Ctrl] = 0.0;
}
bezCompS[bez_cycle] += sloRez;
bezCompS[bez_Ctrl] += (fmax(fabs(inputSampleL),fabs(inputSampleR)) * sloRez);
if (bezCompS[bez_cycle] > 1.0) {
bezCompS[bez_cycle] -= 1.0;
bezCompS[bez_C] = bezCompS[bez_B];
bezCompS[bez_B] = bezCompS[bez_A];
bezCompS[bez_A] = bezCompS[bez_Ctrl];
bezCompS[bez_Ctrl] = 0.0;
}
double CBF = (bezCompF[bez_C]*(1.0-bezCompF[bez_cycle]))+(bezCompF[bez_B]*bezCompF[bez_cycle]);
double BAF = (bezCompF[bez_B]*(1.0-bezCompF[bez_cycle]))+(bezCompF[bez_A]*bezCompF[bez_cycle]);
double CBAF = (bezCompF[bez_B]+(CBF*(1.0-bezCompF[bez_cycle]))+(BAF*bezCompF[bez_cycle]))*0.5;
double CBS = (bezCompS[bez_C]*(1.0-bezCompS[bez_cycle]))+(bezCompS[bez_B]*bezCompS[bez_cycle]);
double BAS = (bezCompS[bez_B]*(1.0-bezCompS[bez_cycle]))+(bezCompS[bez_A]*bezCompS[bez_cycle]);
double CBAS = (bezCompS[bez_B]+(CBS*(1.0-bezCompS[bez_cycle]))+(BAS*bezCompS[bez_cycle]))*0.5;
double CBAMax = fmax(CBAS,CBAF); if (CBAMax > 0.0) CBAMax = 1.0/CBAMax;
double CBAFade = ((CBAS*-CBAMax)+(CBAF*CBAMax)+1.0)*0.5;
inputSampleL *= 1.0-(fmin(((CBAS*(1.0-CBAFade))+(CBAF*CBAFade))*bezCThresh,1.0));
inputSampleR *= 1.0-(fmin(((CBAS*(1.0-CBAFade))+(CBAF*CBAFade))*bezCThresh,1.0));
} else {bezCompF[bez_Ctrl] = 0.0; bezCompS[bez_Ctrl] = 0.0;}
//Dynamics2 custom version for buss
if (highpassEngage) { //distributed Highpass
highpass[hilp_temp] = (inputSampleL*highpass[hilp_e0])+highpass[hilp_eL1];
highpass[hilp_eL1] = (inputSampleL*highpass[hilp_e1])-(highpass[hilp_temp]*highpass[hilp_f1])+highpass[hilp_eL2];
highpass[hilp_eL2] = (inputSampleL*highpass[hilp_e0])-(highpass[hilp_temp]*highpass[hilp_f2]); inputSampleL = highpass[hilp_temp];
highpass[hilp_temp] = (inputSampleR*highpass[hilp_e0])+highpass[hilp_eR1];
highpass[hilp_eR1] = (inputSampleR*highpass[hilp_e1])-(highpass[hilp_temp]*highpass[hilp_f1])+highpass[hilp_eR2];
highpass[hilp_eR2] = (inputSampleR*highpass[hilp_e0])-(highpass[hilp_temp]*highpass[hilp_f2]); inputSampleR = highpass[hilp_temp];
} else highpass[hilp_eR1] = highpass[hilp_eR2] = highpass[hilp_eL1] = highpass[hilp_eL2] = 0.0;
if (lowpassEngage) { //distributed Lowpass
lowpass[hilp_temp] = (inputSampleL*lowpass[hilp_e0])+lowpass[hilp_eL1];
lowpass[hilp_eL1] = (inputSampleL*lowpass[hilp_e1])-(lowpass[hilp_temp]*lowpass[hilp_f1])+lowpass[hilp_eL2];
lowpass[hilp_eL2] = (inputSampleL*lowpass[hilp_e0])-(lowpass[hilp_temp]*lowpass[hilp_f2]); inputSampleL = lowpass[hilp_temp];
lowpass[hilp_temp] = (inputSampleR*lowpass[hilp_e0])+lowpass[hilp_eR1];
lowpass[hilp_eR1] = (inputSampleR*lowpass[hilp_e1])-(lowpass[hilp_temp]*lowpass[hilp_f1])+lowpass[hilp_eR2];
lowpass[hilp_eR2] = (inputSampleR*lowpass[hilp_e0])-(lowpass[hilp_temp]*lowpass[hilp_f2]); inputSampleR = lowpass[hilp_temp];
} else lowpass[hilp_eR1] = lowpass[hilp_eR2] = lowpass[hilp_eL1] = lowpass[hilp_eL2] = 0.0;
//final Highpass/Lowpass continues to address aliasing
//final stacked biquad section is the softest Q for smoothness
double gainR = (panA*temp)+(panB*(1.0-temp));
double gainL = 1.57079633-gainR;
gainR = sin(gainR); gainL = sin(gainL);
double gain = (inTrimA*temp)+(inTrimB*(1.0-temp));
if (gain > 1.0) gain *= gain;
if (gain < 1.0) gain = 1.0-pow(1.0-gain,2);
gain *= 2.0;
inputSampleL = inputSampleL * gainL * gain;
inputSampleR = inputSampleR * gainR * gain;
//applies pan section, and smoothed fader gain
double darkSampleL = inputSampleL;
double darkSampleR = inputSampleR;
if (avgPos > 31) avgPos = 0;
if (spacing > 31) {
avg32L[avgPos] = darkSampleL; avg32R[avgPos] = darkSampleR;
darkSampleL = 0.0; darkSampleR = 0.0;
for (int x = 0; x < 32; x++) {darkSampleL += avg32L[x]; darkSampleR += avg32R[x];}
darkSampleL /= 32.0; darkSampleR /= 32.0;
} if (spacing > 15) {
avg16L[avgPos%16] = darkSampleL; avg16R[avgPos%16] = darkSampleR;
darkSampleL = 0.0; darkSampleR = 0.0;
for (int x = 0; x < 16; x++) {darkSampleL += avg16L[x]; darkSampleR += avg16R[x];}
darkSampleL /= 16.0; darkSampleR /= 16.0;
} if (spacing > 7) {
avg8L[avgPos%8] = darkSampleL; avg8R[avgPos%8] = darkSampleR;
darkSampleL = 0.0; darkSampleR = 0.0;
for (int x = 0; x < 8; x++) {darkSampleL += avg8L[x]; darkSampleR += avg8R[x];}
darkSampleL /= 8.0; darkSampleR /= 8.0;
} if (spacing > 3) {
avg4L[avgPos%4] = darkSampleL; avg4R[avgPos%4] = darkSampleR;
darkSampleL = 0.0; darkSampleR = 0.0;
for (int x = 0; x < 4; x++) {darkSampleL += avg4L[x]; darkSampleR += avg4R[x];}
darkSampleL /= 4.0; darkSampleR /= 4.0;
} if (spacing > 1) {
avg2L[avgPos%2] = darkSampleL; avg2R[avgPos%2] = darkSampleR;
darkSampleL = 0.0; darkSampleR = 0.0;
for (int x = 0; x < 2; x++) {darkSampleL += avg2L[x]; darkSampleR += avg2R[x];}
darkSampleL /= 2.0; darkSampleR /= 2.0;
} avgPos++;
lastSlewL += fabs(lastSlewpleL-inputSampleL); lastSlewpleL = inputSampleL;
double avgSlewL = fmin(lastSlewL*lastSlewL*(0.0635-(overallscale*0.0018436)),1.0);
lastSlewL = fmax(lastSlewL*0.78,2.39996322972865332223);
lastSlewR += fabs(lastSlewpleR-inputSampleR); lastSlewpleR = inputSampleR;
double avgSlewR = fmin(lastSlewR*lastSlewR*(0.0635-(overallscale*0.0018436)),1.0);
lastSlewR = fmax(lastSlewR*0.78,2.39996322972865332223); //look up Golden Angle, it's cool
inputSampleL = (inputSampleL*(1.0-avgSlewL)) + (darkSampleL*avgSlewL);
inputSampleR = (inputSampleR*(1.0-avgSlewR)) + (darkSampleR*avgSlewR);
inputSampleL = fmin(fmax(inputSampleL,-2.032610446872596),2.032610446872596);
long double X = inputSampleL * inputSampleL;
long double sat = inputSampleL * X;
inputSampleL -= (sat*0.125); sat *= X;
inputSampleL += (sat*0.0078125); sat *= X;
inputSampleL -= (sat*0.000244140625); sat *= X;
inputSampleL += (sat*0.000003814697265625); sat *= X;
inputSampleL -= (sat*0.0000000298023223876953125); sat *= X;
//purestsaturation: sine, except all the corrections
//retain mantissa of a long double increasing power function
inputSampleR = fmin(fmax(inputSampleR,-2.032610446872596),2.032610446872596);
X = inputSampleR * inputSampleR;
sat = inputSampleR * X;
inputSampleR -= (sat*0.125); sat *= X;
inputSampleR += (sat*0.0078125); sat *= X;
inputSampleR -= (sat*0.000244140625); sat *= X;
inputSampleR += (sat*0.000003814697265625); sat *= X;
inputSampleR -= (sat*0.0000000298023223876953125); sat *= X;
//purestsaturation: sine, except all the corrections
//retain mantissa of a long double increasing power function
//we are leaving it as a clip that will go over 0dB.
//it is a softclip so it will give you a more forgiving experience,
//but you are meant to not drive the softclip for just level.
//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 ConsoleHBuss::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
VstInt32 inFramesToProcess = sampleFrames; //vst doesn't give us this as a separate variable so we'll make it
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= getSampleRate();
int spacing = floor(overallscale*2.0);
if (spacing < 2) spacing = 2; if (spacing > 32) spacing = 32;
double trebleGain = (HIG-0.5)*2.0;
trebleGain = 1.0+(trebleGain*fabs(trebleGain)*fabs(trebleGain));
double midGain = (MID-0.5)*2.0;
midGain = 1.0+(midGain*fabs(midGain)*fabs(midGain));
double bassGain = (LOW-0.5)*2.0;
bassGain = 1.0+(bassGain*fabs(bassGain)*fabs(bassGain));
//separate from filtering stage, this is amplitude, centered on 1.0 unity gain
double highCoef = 0.0;
double lowCoef = 0.0;
double omega = 0.0;
double biqK = 0.0;
double norm = 0.0;
bool eqOff = (trebleGain == 1.0 && midGain == 1.0 && bassGain == 1.0);
//we get to completely bypass EQ if we're truly not using it. The mechanics of it mean that
//it cancels out to bit-identical anyhow, but we get to skip the calculation
if (!eqOff) {
//SmoothEQ3 is how to get 3rd order steepness at very low CPU.
//because sample rate varies, you could also vary the crossovers
//you can't vary Q because math is simplified to take advantage of
//how the accurate Q value for this filter is always exactly 1.0.
highFast[biq_freq] = (4000.0/getSampleRate());
omega = 2.0*M_PI*(4000.0/getSampleRate()); //mid-high crossover freq
biqK = 2.0 - cos(omega);
highCoef = -sqrt(biqK*biqK - 1.0) + biqK;
lowFast[biq_freq] = (200.0/getSampleRate());
omega = 2.0*M_PI*(200.0/getSampleRate()); //low-mid crossover freq
biqK = 2.0 - cos(omega);
lowCoef = -sqrt(biqK*biqK - 1.0) + biqK;
//exponential IIR filter as part of an accurate 3rd order Butterworth filter
biqK = tan(M_PI * highFast[biq_freq]);
norm = 1.0 / (1.0 + biqK + biqK*biqK);
highFast[biq_a0] = biqK * biqK * norm;
highFast[biq_a1] = 2.0 * highFast[biq_a0];
highFast[biq_a2] = highFast[biq_a0];
highFast[biq_b1] = 2.0 * (biqK*biqK - 1.0) * norm;
highFast[biq_b2] = (1.0 - biqK + biqK*biqK) * norm;
biqK = tan(M_PI * lowFast[biq_freq]);
norm = 1.0 / (1.0 + biqK + biqK*biqK);
lowFast[biq_a0] = biqK * biqK * norm;
lowFast[biq_a1] = 2.0 * lowFast[biq_a0];
lowFast[biq_a2] = lowFast[biq_a0];
lowFast[biq_b1] = 2.0 * (biqK*biqK - 1.0) * norm;
lowFast[biq_b2] = (1.0 - biqK + biqK*biqK) * norm;
//custom biquad setup with Q = 1.0 gets to omit some divides
}
//SmoothEQ3
double bezCThresh = pow(1.0-THR, 6.0) * 8.0;
double bezRez = pow(1.0-THR, 12.360679774997898) / overallscale;
double sloRez = pow(1.0-THR,10.0) / overallscale;
sloRez = fmin(fmax(sloRez,0.00001),1.0);
bezRez = fmin(fmax(bezRez,0.00001),1.0);
//Dynamics2
highpass[hilp_freq] = ((pow(HIP,3)*24000.0)+10.0)/getSampleRate();
if (highpass[hilp_freq] > 0.495) highpass[hilp_freq] = 0.495;
bool highpassEngage = true; if (HIP == 0.0) highpassEngage = false;
lowpass[hilp_freq] = ((pow(LOP,3)*24000.0)+10.0)/getSampleRate();
if (lowpass[hilp_freq] > 0.495) lowpass[hilp_freq] = 0.495;
bool lowpassEngage = true; if (LOP == 1.0) lowpassEngage = false;
highpass[hilp_aA0] = highpass[hilp_aB0];
highpass[hilp_aA1] = highpass[hilp_aB1];
highpass[hilp_bA1] = highpass[hilp_bB1];
highpass[hilp_bA2] = highpass[hilp_bB2];
highpass[hilp_cA0] = highpass[hilp_cB0];
highpass[hilp_cA1] = highpass[hilp_cB1];
highpass[hilp_dA1] = highpass[hilp_dB1];
highpass[hilp_dA2] = highpass[hilp_dB2];
highpass[hilp_eA0] = highpass[hilp_eB0];
highpass[hilp_eA1] = highpass[hilp_eB1];
highpass[hilp_fA1] = highpass[hilp_fB1];
highpass[hilp_fA2] = highpass[hilp_fB2];
lowpass[hilp_aA0] = lowpass[hilp_aB0];
lowpass[hilp_aA1] = lowpass[hilp_aB1];
lowpass[hilp_bA1] = lowpass[hilp_bB1];
lowpass[hilp_bA2] = lowpass[hilp_bB2];
lowpass[hilp_cA0] = lowpass[hilp_cB0];
lowpass[hilp_cA1] = lowpass[hilp_cB1];
lowpass[hilp_dA1] = lowpass[hilp_dB1];
lowpass[hilp_dA2] = lowpass[hilp_dB2];
lowpass[hilp_eA0] = lowpass[hilp_eB0];
lowpass[hilp_eA1] = lowpass[hilp_eB1];
lowpass[hilp_fA1] = lowpass[hilp_fB1];
lowpass[hilp_fA2] = lowpass[hilp_fB2];
//previous run through the buffer is still in the filter, so we move it
//to the A section and now it's the new starting point.
//On the buss, highpass and lowpass are isolators meant to be moved,
//so they are interpolated where the channels are not
biqK = tan(M_PI * highpass[hilp_freq]); //highpass
norm = 1.0 / (1.0 + biqK / 1.93185165 + biqK * biqK);
highpass[hilp_aB0] = norm;
highpass[hilp_aB1] = -2.0 * highpass[hilp_aB0];
highpass[hilp_bB1] = 2.0 * (biqK * biqK - 1.0) * norm;
highpass[hilp_bB2] = (1.0 - biqK / 1.93185165 + biqK * biqK) * norm;
norm = 1.0 / (1.0 + biqK / 0.70710678 + biqK * biqK);
highpass[hilp_cB0] = norm;
highpass[hilp_cB1] = -2.0 * highpass[hilp_cB0];
highpass[hilp_dB1] = 2.0 * (biqK * biqK - 1.0) * norm;
highpass[hilp_dB2] = (1.0 - biqK / 0.70710678 + biqK * biqK) * norm;
norm = 1.0 / (1.0 + biqK / 0.51763809 + biqK * biqK);
highpass[hilp_eB0] = norm;
highpass[hilp_eB1] = -2.0 * highpass[hilp_eB0];
highpass[hilp_fB1] = 2.0 * (biqK * biqK - 1.0) * norm;
highpass[hilp_fB2] = (1.0 - biqK / 0.51763809 + biqK * biqK) * norm;
biqK = tan(M_PI * lowpass[hilp_freq]); //lowpass
norm = 1.0 / (1.0 + biqK / 1.93185165 + biqK * biqK);
lowpass[hilp_aB0] = biqK * biqK * norm;
lowpass[hilp_aB1] = 2.0 * lowpass[hilp_aB0];
lowpass[hilp_bB1] = 2.0 * (biqK * biqK - 1.0) * norm;
lowpass[hilp_bB2] = (1.0 - biqK / 1.93185165 + biqK * biqK) * norm;
norm = 1.0 / (1.0 + biqK / 0.70710678 + biqK * biqK);
lowpass[hilp_cB0] = biqK * biqK * norm;
lowpass[hilp_cB1] = 2.0 * lowpass[hilp_cB0];
lowpass[hilp_dB1] = 2.0 * (biqK * biqK - 1.0) * norm;
lowpass[hilp_dB2] = (1.0 - biqK / 0.70710678 + biqK * biqK) * norm;
norm = 1.0 / (1.0 + biqK / 0.51763809 + biqK * biqK);
lowpass[hilp_eB0] = biqK * biqK * norm;
lowpass[hilp_eB1] = 2.0 * lowpass[hilp_eB0];
lowpass[hilp_fB1] = 2.0 * (biqK * biqK - 1.0) * norm;
lowpass[hilp_fB2] = (1.0 - biqK / 0.51763809 + biqK * biqK) * norm;
if (highpass[hilp_aA0] == 0.0) { // if we have just started, start directly with raw info
highpass[hilp_aA0] = highpass[hilp_aB0];
highpass[hilp_aA1] = highpass[hilp_aB1];
highpass[hilp_bA1] = highpass[hilp_bB1];
highpass[hilp_bA2] = highpass[hilp_bB2];
highpass[hilp_cA0] = highpass[hilp_cB0];
highpass[hilp_cA1] = highpass[hilp_cB1];
highpass[hilp_dA1] = highpass[hilp_dB1];
highpass[hilp_dA2] = highpass[hilp_dB2];
highpass[hilp_eA0] = highpass[hilp_eB0];
highpass[hilp_eA1] = highpass[hilp_eB1];
highpass[hilp_fA1] = highpass[hilp_fB1];
highpass[hilp_fA2] = highpass[hilp_fB2];
lowpass[hilp_aA0] = lowpass[hilp_aB0];
lowpass[hilp_aA1] = lowpass[hilp_aB1];
lowpass[hilp_bA1] = lowpass[hilp_bB1];
lowpass[hilp_bA2] = lowpass[hilp_bB2];
lowpass[hilp_cA0] = lowpass[hilp_cB0];
lowpass[hilp_cA1] = lowpass[hilp_cB1];
lowpass[hilp_dA1] = lowpass[hilp_dB1];
lowpass[hilp_dA2] = lowpass[hilp_dB2];
lowpass[hilp_eA0] = lowpass[hilp_eB0];
lowpass[hilp_eA1] = lowpass[hilp_eB1];
lowpass[hilp_fA1] = lowpass[hilp_fB1];
lowpass[hilp_fA2] = lowpass[hilp_fB2];
}
panA = panB; panB = PAN*1.57079633;
inTrimA = inTrimB; inTrimB = FAD*2.0;
//Console
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;
const double temp = (double)sampleFrames/inFramesToProcess;
highpass[hilp_a0] = (highpass[hilp_aA0]*temp)+(highpass[hilp_aB0]*(1.0-temp));
highpass[hilp_a1] = (highpass[hilp_aA1]*temp)+(highpass[hilp_aB1]*(1.0-temp));
highpass[hilp_b1] = (highpass[hilp_bA1]*temp)+(highpass[hilp_bB1]*(1.0-temp));
highpass[hilp_b2] = (highpass[hilp_bA2]*temp)+(highpass[hilp_bB2]*(1.0-temp));
highpass[hilp_c0] = (highpass[hilp_cA0]*temp)+(highpass[hilp_cB0]*(1.0-temp));
highpass[hilp_c1] = (highpass[hilp_cA1]*temp)+(highpass[hilp_cB1]*(1.0-temp));
highpass[hilp_d1] = (highpass[hilp_dA1]*temp)+(highpass[hilp_dB1]*(1.0-temp));
highpass[hilp_d2] = (highpass[hilp_dA2]*temp)+(highpass[hilp_dB2]*(1.0-temp));
highpass[hilp_e0] = (highpass[hilp_eA0]*temp)+(highpass[hilp_eB0]*(1.0-temp));
highpass[hilp_e1] = (highpass[hilp_eA1]*temp)+(highpass[hilp_eB1]*(1.0-temp));
highpass[hilp_f1] = (highpass[hilp_fA1]*temp)+(highpass[hilp_fB1]*(1.0-temp));
highpass[hilp_f2] = (highpass[hilp_fA2]*temp)+(highpass[hilp_fB2]*(1.0-temp));
lowpass[hilp_a0] = (lowpass[hilp_aA0]*temp)+(lowpass[hilp_aB0]*(1.0-temp));
lowpass[hilp_a1] = (lowpass[hilp_aA1]*temp)+(lowpass[hilp_aB1]*(1.0-temp));
lowpass[hilp_b1] = (lowpass[hilp_bA1]*temp)+(lowpass[hilp_bB1]*(1.0-temp));
lowpass[hilp_b2] = (lowpass[hilp_bA2]*temp)+(lowpass[hilp_bB2]*(1.0-temp));
lowpass[hilp_c0] = (lowpass[hilp_cA0]*temp)+(lowpass[hilp_cB0]*(1.0-temp));
lowpass[hilp_c1] = (lowpass[hilp_cA1]*temp)+(lowpass[hilp_cB1]*(1.0-temp));
lowpass[hilp_d1] = (lowpass[hilp_dA1]*temp)+(lowpass[hilp_dB1]*(1.0-temp));
lowpass[hilp_d2] = (lowpass[hilp_dA2]*temp)+(lowpass[hilp_dB2]*(1.0-temp));
lowpass[hilp_e0] = (lowpass[hilp_eA0]*temp)+(lowpass[hilp_eB0]*(1.0-temp));
lowpass[hilp_e1] = (lowpass[hilp_eA1]*temp)+(lowpass[hilp_eB1]*(1.0-temp));
lowpass[hilp_f1] = (lowpass[hilp_fA1]*temp)+(lowpass[hilp_fB1]*(1.0-temp));
lowpass[hilp_f2] = (lowpass[hilp_fA2]*temp)+(lowpass[hilp_fB2]*(1.0-temp));
if (highpassEngage) { //distributed Highpass
highpass[hilp_temp] = (inputSampleL*highpass[hilp_a0])+highpass[hilp_aL1];
highpass[hilp_aL1] = (inputSampleL*highpass[hilp_a1])-(highpass[hilp_temp]*highpass[hilp_b1])+highpass[hilp_aL2];
highpass[hilp_aL2] = (inputSampleL*highpass[hilp_a0])-(highpass[hilp_temp]*highpass[hilp_b2]); inputSampleL = highpass[hilp_temp];
highpass[hilp_temp] = (inputSampleR*highpass[hilp_a0])+highpass[hilp_aR1];
highpass[hilp_aR1] = (inputSampleR*highpass[hilp_a1])-(highpass[hilp_temp]*highpass[hilp_b1])+highpass[hilp_aR2];
highpass[hilp_aR2] = (inputSampleR*highpass[hilp_a0])-(highpass[hilp_temp]*highpass[hilp_b2]); inputSampleR = highpass[hilp_temp];
} else highpass[hilp_aR1] = highpass[hilp_aR2] = highpass[hilp_aL1] = highpass[hilp_aL2] = 0.0;
if (lowpassEngage) { //distributed Lowpass
lowpass[hilp_temp] = (inputSampleL*lowpass[hilp_a0])+lowpass[hilp_aL1];
lowpass[hilp_aL1] = (inputSampleL*lowpass[hilp_a1])-(lowpass[hilp_temp]*lowpass[hilp_b1])+lowpass[hilp_aL2];
lowpass[hilp_aL2] = (inputSampleL*lowpass[hilp_a0])-(lowpass[hilp_temp]*lowpass[hilp_b2]); inputSampleL = lowpass[hilp_temp];
lowpass[hilp_temp] = (inputSampleR*lowpass[hilp_a0])+lowpass[hilp_aR1];
lowpass[hilp_aR1] = (inputSampleR*lowpass[hilp_a1])-(lowpass[hilp_temp]*lowpass[hilp_b1])+lowpass[hilp_aR2];
lowpass[hilp_aR2] = (inputSampleR*lowpass[hilp_a0])-(lowpass[hilp_temp]*lowpass[hilp_b2]); inputSampleR = lowpass[hilp_temp];
} else lowpass[hilp_aR1] = lowpass[hilp_aR2] = lowpass[hilp_aL1] = lowpass[hilp_aL2] = 0.0;
//first Highpass/Lowpass blocks aliasing before the nonlinearity of ConsoleXBuss and Parametric
if (inputSampleL > 1.0) inputSampleL = 1.0;
else if (inputSampleL > 0.0) inputSampleL = -expm1((log1p(-inputSampleL) * 0.6180339887498949));
if (inputSampleL < -1.0) inputSampleL = -1.0;
else if (inputSampleL < 0.0) inputSampleL = expm1((log1p(inputSampleL) * 0.6180339887498949));
if (inputSampleR > 1.0) inputSampleR = 1.0;
else if (inputSampleR > 0.0) inputSampleR = -expm1((log1p(-inputSampleR) * 0.6180339887498949));
if (inputSampleR < -1.0) inputSampleR = -1.0;
else if (inputSampleR < 0.0) inputSampleR = expm1((log1p(inputSampleR) * 0.6180339887498949));
if (highpassEngage) { //distributed Highpass
highpass[hilp_temp] = (inputSampleL*highpass[hilp_c0])+highpass[hilp_cL1];
highpass[hilp_cL1] = (inputSampleL*highpass[hilp_c1])-(highpass[hilp_temp]*highpass[hilp_d1])+highpass[hilp_cL2];
highpass[hilp_cL2] = (inputSampleL*highpass[hilp_c0])-(highpass[hilp_temp]*highpass[hilp_d2]); inputSampleL = highpass[hilp_temp];
highpass[hilp_temp] = (inputSampleR*highpass[hilp_c0])+highpass[hilp_cR1];
highpass[hilp_cR1] = (inputSampleR*highpass[hilp_c1])-(highpass[hilp_temp]*highpass[hilp_d1])+highpass[hilp_cR2];
highpass[hilp_cR2] = (inputSampleR*highpass[hilp_c0])-(highpass[hilp_temp]*highpass[hilp_d2]); inputSampleR = highpass[hilp_temp];
} else highpass[hilp_cR1] = highpass[hilp_cR2] = highpass[hilp_cL1] = highpass[hilp_cL2] = 0.0;
if (lowpassEngage) { //distributed Lowpass
lowpass[hilp_temp] = (inputSampleL*lowpass[hilp_c0])+lowpass[hilp_cL1];
lowpass[hilp_cL1] = (inputSampleL*lowpass[hilp_c1])-(lowpass[hilp_temp]*lowpass[hilp_d1])+lowpass[hilp_cL2];
lowpass[hilp_cL2] = (inputSampleL*lowpass[hilp_c0])-(lowpass[hilp_temp]*lowpass[hilp_d2]); inputSampleL = lowpass[hilp_temp];
lowpass[hilp_temp] = (inputSampleR*lowpass[hilp_c0])+lowpass[hilp_cR1];
lowpass[hilp_cR1] = (inputSampleR*lowpass[hilp_c1])-(lowpass[hilp_temp]*lowpass[hilp_d1])+lowpass[hilp_cR2];
lowpass[hilp_cR2] = (inputSampleR*lowpass[hilp_c0])-(lowpass[hilp_temp]*lowpass[hilp_d2]); inputSampleR = lowpass[hilp_temp];
} else lowpass[hilp_cR1] = lowpass[hilp_cR2] = lowpass[hilp_cL1] = lowpass[hilp_cL2] = 0.0;
//another stage of Highpass/Lowpass before bringing in the parametric bands
if (!eqOff) {
double trebleFastL = inputSampleL;
double outSample = (trebleFastL * highFast[biq_a0]) + highFast[biq_sL1];
highFast[biq_sL1] = (trebleFastL * highFast[biq_a1]) - (outSample * highFast[biq_b1]) + highFast[biq_sL2];
highFast[biq_sL2] = (trebleFastL * highFast[biq_a2]) - (outSample * highFast[biq_b2]);
double midFastL = outSample; trebleFastL -= midFastL;
outSample = (midFastL * lowFast[biq_a0]) + lowFast[biq_sL1];
lowFast[biq_sL1] = (midFastL * lowFast[biq_a1]) - (outSample * lowFast[biq_b1]) + lowFast[biq_sL2];
lowFast[biq_sL2] = (midFastL * lowFast[biq_a2]) - (outSample * lowFast[biq_b2]);
double bassFastL = outSample; midFastL -= bassFastL;
trebleFastL = (bassFastL*bassGain) + (midFastL*midGain) + (trebleFastL*trebleGain);
//first stage of two crossovers is biquad of exactly 1.0 Q
highFastLIIR = (highFastLIIR*highCoef) + (trebleFastL*(1.0-highCoef));
midFastL = highFastLIIR; trebleFastL -= midFastL;
lowFastLIIR = (lowFastLIIR*lowCoef) + (midFastL*(1.0-lowCoef));
bassFastL = lowFastLIIR; midFastL -= bassFastL;
inputSampleL = (bassFastL*bassGain) + (midFastL*midGain) + (trebleFastL*trebleGain);
//second stage of two crossovers is the exponential filters
//this produces a slightly steeper Butterworth filter very cheaply
double trebleFastR = inputSampleR;
outSample = (trebleFastR * highFast[biq_a0]) + highFast[biq_sR1];
highFast[biq_sR1] = (trebleFastR * highFast[biq_a1]) - (outSample * highFast[biq_b1]) + highFast[biq_sR2];
highFast[biq_sR2] = (trebleFastR * highFast[biq_a2]) - (outSample * highFast[biq_b2]);
double midFastR = outSample; trebleFastR -= midFastR;
outSample = (midFastR * lowFast[biq_a0]) + lowFast[biq_sR1];
lowFast[biq_sR1] = (midFastR * lowFast[biq_a1]) - (outSample * lowFast[biq_b1]) + lowFast[biq_sR2];
lowFast[biq_sR2] = (midFastR * lowFast[biq_a2]) - (outSample * lowFast[biq_b2]);
double bassFastR = outSample; midFastR -= bassFastR;
trebleFastR = (bassFastR*bassGain) + (midFastR*midGain) + (trebleFastR*trebleGain);
//first stage of two crossovers is biquad of exactly 1.0 Q
highFastRIIR = (highFastRIIR*highCoef) + (trebleFastR*(1.0-highCoef));
midFastR = highFastRIIR; trebleFastR -= midFastR;
lowFastRIIR = (lowFastRIIR*lowCoef) + (midFastR*(1.0-lowCoef));
bassFastR = lowFastRIIR; midFastR -= bassFastR;
inputSampleR = (bassFastR*bassGain) + (midFastR*midGain) + (trebleFastR*trebleGain);
//second stage of two crossovers is the exponential filters
//this produces a slightly steeper Butterworth filter very cheaply
}
//SmoothEQ3
if (bezCThresh > 0.0) {
inputSampleL *= ((bezCThresh*0.5)+1.0);
inputSampleR *= ((bezCThresh*0.5)+1.0);
bezCompF[bez_cycle] += bezRez;
bezCompF[bez_Ctrl] += (fmax(fabs(inputSampleL),fabs(inputSampleR)) * bezRez);
if (bezCompF[bez_cycle] > 1.0) {
bezCompF[bez_cycle] -= 1.0;
bezCompF[bez_C] = bezCompF[bez_B];
bezCompF[bez_B] = bezCompF[bez_A];
bezCompF[bez_A] = bezCompF[bez_Ctrl];
bezCompF[bez_Ctrl] = 0.0;
}
bezCompS[bez_cycle] += sloRez;
bezCompS[bez_Ctrl] += (fmax(fabs(inputSampleL),fabs(inputSampleR)) * sloRez);
if (bezCompS[bez_cycle] > 1.0) {
bezCompS[bez_cycle] -= 1.0;
bezCompS[bez_C] = bezCompS[bez_B];
bezCompS[bez_B] = bezCompS[bez_A];
bezCompS[bez_A] = bezCompS[bez_Ctrl];
bezCompS[bez_Ctrl] = 0.0;
}
double CBF = (bezCompF[bez_C]*(1.0-bezCompF[bez_cycle]))+(bezCompF[bez_B]*bezCompF[bez_cycle]);
double BAF = (bezCompF[bez_B]*(1.0-bezCompF[bez_cycle]))+(bezCompF[bez_A]*bezCompF[bez_cycle]);
double CBAF = (bezCompF[bez_B]+(CBF*(1.0-bezCompF[bez_cycle]))+(BAF*bezCompF[bez_cycle]))*0.5;
double CBS = (bezCompS[bez_C]*(1.0-bezCompS[bez_cycle]))+(bezCompS[bez_B]*bezCompS[bez_cycle]);
double BAS = (bezCompS[bez_B]*(1.0-bezCompS[bez_cycle]))+(bezCompS[bez_A]*bezCompS[bez_cycle]);
double CBAS = (bezCompS[bez_B]+(CBS*(1.0-bezCompS[bez_cycle]))+(BAS*bezCompS[bez_cycle]))*0.5;
double CBAMax = fmax(CBAS,CBAF); if (CBAMax > 0.0) CBAMax = 1.0/CBAMax;
double CBAFade = ((CBAS*-CBAMax)+(CBAF*CBAMax)+1.0)*0.5;
inputSampleL *= 1.0-(fmin(((CBAS*(1.0-CBAFade))+(CBAF*CBAFade))*bezCThresh,1.0));
inputSampleR *= 1.0-(fmin(((CBAS*(1.0-CBAFade))+(CBAF*CBAFade))*bezCThresh,1.0));
} else {bezCompF[bez_Ctrl] = 0.0; bezCompS[bez_Ctrl] = 0.0;}
//Dynamics2 custom version for buss
if (highpassEngage) { //distributed Highpass
highpass[hilp_temp] = (inputSampleL*highpass[hilp_e0])+highpass[hilp_eL1];
highpass[hilp_eL1] = (inputSampleL*highpass[hilp_e1])-(highpass[hilp_temp]*highpass[hilp_f1])+highpass[hilp_eL2];
highpass[hilp_eL2] = (inputSampleL*highpass[hilp_e0])-(highpass[hilp_temp]*highpass[hilp_f2]); inputSampleL = highpass[hilp_temp];
highpass[hilp_temp] = (inputSampleR*highpass[hilp_e0])+highpass[hilp_eR1];
highpass[hilp_eR1] = (inputSampleR*highpass[hilp_e1])-(highpass[hilp_temp]*highpass[hilp_f1])+highpass[hilp_eR2];
highpass[hilp_eR2] = (inputSampleR*highpass[hilp_e0])-(highpass[hilp_temp]*highpass[hilp_f2]); inputSampleR = highpass[hilp_temp];
} else highpass[hilp_eR1] = highpass[hilp_eR2] = highpass[hilp_eL1] = highpass[hilp_eL2] = 0.0;
if (lowpassEngage) { //distributed Lowpass
lowpass[hilp_temp] = (inputSampleL*lowpass[hilp_e0])+lowpass[hilp_eL1];
lowpass[hilp_eL1] = (inputSampleL*lowpass[hilp_e1])-(lowpass[hilp_temp]*lowpass[hilp_f1])+lowpass[hilp_eL2];
lowpass[hilp_eL2] = (inputSampleL*lowpass[hilp_e0])-(lowpass[hilp_temp]*lowpass[hilp_f2]); inputSampleL = lowpass[hilp_temp];
lowpass[hilp_temp] = (inputSampleR*lowpass[hilp_e0])+lowpass[hilp_eR1];
lowpass[hilp_eR1] = (inputSampleR*lowpass[hilp_e1])-(lowpass[hilp_temp]*lowpass[hilp_f1])+lowpass[hilp_eR2];
lowpass[hilp_eR2] = (inputSampleR*lowpass[hilp_e0])-(lowpass[hilp_temp]*lowpass[hilp_f2]); inputSampleR = lowpass[hilp_temp];
} else lowpass[hilp_eR1] = lowpass[hilp_eR2] = lowpass[hilp_eL1] = lowpass[hilp_eL2] = 0.0;
//final Highpass/Lowpass continues to address aliasing
//final stacked biquad section is the softest Q for smoothness
double gainR = (panA*temp)+(panB*(1.0-temp));
double gainL = 1.57079633-gainR;
gainR = sin(gainR); gainL = sin(gainL);
double gain = (inTrimA*temp)+(inTrimB*(1.0-temp));
if (gain > 1.0) gain *= gain;
if (gain < 1.0) gain = 1.0-pow(1.0-gain,2);
gain *= 2.0;
inputSampleL = inputSampleL * gainL * gain;
inputSampleR = inputSampleR * gainR * gain;
//applies pan section, and smoothed fader gain
double darkSampleL = inputSampleL;
double darkSampleR = inputSampleR;
if (avgPos > 31) avgPos = 0;
if (spacing > 31) {
avg32L[avgPos] = darkSampleL; avg32R[avgPos] = darkSampleR;
darkSampleL = 0.0; darkSampleR = 0.0;
for (int x = 0; x < 32; x++) {darkSampleL += avg32L[x]; darkSampleR += avg32R[x];}
darkSampleL /= 32.0; darkSampleR /= 32.0;
} if (spacing > 15) {
avg16L[avgPos%16] = darkSampleL; avg16R[avgPos%16] = darkSampleR;
darkSampleL = 0.0; darkSampleR = 0.0;
for (int x = 0; x < 16; x++) {darkSampleL += avg16L[x]; darkSampleR += avg16R[x];}
darkSampleL /= 16.0; darkSampleR /= 16.0;
} if (spacing > 7) {
avg8L[avgPos%8] = darkSampleL; avg8R[avgPos%8] = darkSampleR;
darkSampleL = 0.0; darkSampleR = 0.0;
for (int x = 0; x < 8; x++) {darkSampleL += avg8L[x]; darkSampleR += avg8R[x];}
darkSampleL /= 8.0; darkSampleR /= 8.0;
} if (spacing > 3) {
avg4L[avgPos%4] = darkSampleL; avg4R[avgPos%4] = darkSampleR;
darkSampleL = 0.0; darkSampleR = 0.0;
for (int x = 0; x < 4; x++) {darkSampleL += avg4L[x]; darkSampleR += avg4R[x];}
darkSampleL /= 4.0; darkSampleR /= 4.0;
} if (spacing > 1) {
avg2L[avgPos%2] = darkSampleL; avg2R[avgPos%2] = darkSampleR;
darkSampleL = 0.0; darkSampleR = 0.0;
for (int x = 0; x < 2; x++) {darkSampleL += avg2L[x]; darkSampleR += avg2R[x];}
darkSampleL /= 2.0; darkSampleR /= 2.0;
} avgPos++;
lastSlewL += fabs(lastSlewpleL-inputSampleL); lastSlewpleL = inputSampleL;
double avgSlewL = fmin(lastSlewL*lastSlewL*(0.0635-(overallscale*0.0018436)),1.0);
lastSlewL = fmax(lastSlewL*0.78,2.39996322972865332223);
lastSlewR += fabs(lastSlewpleR-inputSampleR); lastSlewpleR = inputSampleR;
double avgSlewR = fmin(lastSlewR*lastSlewR*(0.0635-(overallscale*0.0018436)),1.0);
lastSlewR = fmax(lastSlewR*0.78,2.39996322972865332223); //look up Golden Angle, it's cool
inputSampleL = (inputSampleL*(1.0-avgSlewL)) + (darkSampleL*avgSlewL);
inputSampleR = (inputSampleR*(1.0-avgSlewR)) + (darkSampleR*avgSlewR);
inputSampleL = fmin(fmax(inputSampleL,-2.032610446872596),2.032610446872596);
long double X = inputSampleL * inputSampleL;
long double sat = inputSampleL * X;
inputSampleL -= (sat*0.125); sat *= X;
inputSampleL += (sat*0.0078125); sat *= X;
inputSampleL -= (sat*0.000244140625); sat *= X;
inputSampleL += (sat*0.000003814697265625); sat *= X;
inputSampleL -= (sat*0.0000000298023223876953125); sat *= X;
//purestsaturation: sine, except all the corrections
//retain mantissa of a long double increasing power function
inputSampleR = fmin(fmax(inputSampleR,-2.032610446872596),2.032610446872596);
X = inputSampleR * inputSampleR;
sat = inputSampleR * X;
inputSampleR -= (sat*0.125); sat *= X;
inputSampleR += (sat*0.0078125); sat *= X;
inputSampleR -= (sat*0.000244140625); sat *= X;
inputSampleR += (sat*0.000003814697265625); sat *= X;
inputSampleR -= (sat*0.0000000298023223876953125); sat *= X;
//purestsaturation: sine, except all the corrections
//retain mantissa of a long double increasing power function
//we are leaving it as a clip that will go over 0dB.
//it is a softclip so it will give you a more forgiving experience,
//but you are meant to not drive the softclip for just level.
//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++;
}
}
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