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airwindows/plugins/MacSignedAU/GrindAmp/GrindAmp.cpp
Christopher Johnson f06250c082 Clarifying Licensing in boilerplate code generation
2022-11-21 09:20:21 -05:00

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/*
* File: GrindAmp.cpp
*
* Version: 1.0
*
* Created: 3/28/22
*
* Copyright: Copyright © 2022 Airwindows, Airwindows uses the MIT license
*
* Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. ("Apple") in
* consideration of your agreement to the following terms, and your use, installation, modification
* or redistribution of this Apple software constitutes acceptance of these terms. If you do
* not agree with these terms, please do not use, install, modify or redistribute this Apple
* software.
*
* In consideration of your agreement to abide by the following terms, and subject to these terms,
* Apple grants you a personal, non-exclusive license, under Apple's copyrights in this
* original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the
* Apple Software, with or without modifications, in source and/or binary forms; provided that if you
* redistribute the Apple Software in its entirety and without modifications, you must retain this
* notice and the following text and disclaimers in all such redistributions of the Apple Software.
* Neither the name, trademarks, service marks or logos of Apple Computer, Inc. may be used to
* endorse or promote products derived from the Apple Software without specific prior written
* permission from Apple. Except as expressly stated in this notice, no other rights or
* licenses, express or implied, are granted by Apple herein, including but not limited to any
* patent rights that may be infringed by your derivative works or by other works in which the
* Apple Software may be incorporated.
*
* The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR
* IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE
* OR IN COMBINATION WITH YOUR PRODUCTS.
*
* IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE,
* REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
* UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN
* IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*=============================================================================
GrindAmp.cpp
=============================================================================*/
#include "GrindAmp.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
AUDIOCOMPONENT_ENTRY(AUBaseFactory, GrindAmp)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// GrindAmp::GrindAmp
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GrindAmp::GrindAmp(AudioUnit component)
: AUEffectBase(component)
{
CreateElements();
Globals()->UseIndexedParameters(kNumberOfParameters);
SetParameter(kParam_One, kDefaultValue_ParamOne );
SetParameter(kParam_Two, kDefaultValue_ParamTwo );
SetParameter(kParam_Three, kDefaultValue_ParamThree );
SetParameter(kParam_Four, kDefaultValue_ParamFour );
#if AU_DEBUG_DISPATCHER
mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// GrindAmp::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult GrindAmp::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// GrindAmp::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult GrindAmp::GetParameterInfo(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
AudioUnitParameterInfo &outParameterInfo )
{
ComponentResult result = noErr;
outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable
| kAudioUnitParameterFlag_IsReadable;
if (inScope == kAudioUnitScope_Global) {
switch(inParameterID)
{
case kParam_One:
AUBase::FillInParameterName (outParameterInfo, kParameterOneName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamOne;
break;
case kParam_Two:
AUBase::FillInParameterName (outParameterInfo, kParameterTwoName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamTwo;
break;
case kParam_Three:
AUBase::FillInParameterName (outParameterInfo, kParameterThreeName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamThree;
break;
case kParam_Four:
AUBase::FillInParameterName (outParameterInfo, kParameterFourName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamFour;
break;
default:
result = kAudioUnitErr_InvalidParameter;
break;
}
} else {
result = kAudioUnitErr_InvalidParameter;
}
return result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// GrindAmp::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult GrindAmp::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// GrindAmp::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult GrindAmp::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// GrindAmp::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult GrindAmp::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____GrindAmpEffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// GrindAmp::GrindAmpKernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void GrindAmp::GrindAmpKernel::Reset()
{
smoothA = 0.0;
smoothB = 0.0;
smoothC = 0.0;
smoothD = 0.0;
smoothE = 0.0;
smoothF = 0.0;
smoothG = 0.0;
smoothH = 0.0;
smoothI = 0.0;
smoothJ = 0.0;
smoothK = 0.0;
secondA = 0.0;
secondB = 0.0;
secondC = 0.0;
secondD = 0.0;
secondE = 0.0;
secondF = 0.0;
secondG = 0.0;
secondH = 0.0;
secondI = 0.0;
secondJ = 0.0;
secondK = 0.0;
thirdA = 0.0;
thirdB = 0.0;
thirdC = 0.0;
thirdD = 0.0;
thirdE = 0.0;
thirdF = 0.0;
thirdG = 0.0;
thirdH = 0.0;
thirdI = 0.0;
thirdJ = 0.0;
thirdK = 0.0;
iirSampleA = 0.0;
iirSampleB = 0.0;
iirSampleC = 0.0;
iirSampleD = 0.0;
iirSampleE = 0.0;
iirSampleF = 0.0;
iirSampleG = 0.0;
iirSampleH = 0.0;
iirSampleI = 0.0;
iirLowpass = 0.0;
iirSub = 0.0;
storeSample = 0.0; //amp
for(int fcount = 0; fcount < 90; fcount++) {b[fcount] = 0;}
smoothCabA = 0.0; smoothCabB = 0.0; lastCabSample = 0.0; //cab
for (int fcount = 0; fcount < 9; fcount++) {lastRef[fcount] = 0.0;}
cycle = 0; //undersampling
for (int x = 0; x < fix_total; x++) {
fixA[x] = 0.0;
fixB[x] = 0.0;
fixC[x] = 0.0;
fixD[x] = 0.0;
fixE[x] = 0.0;
fixF[x] = 0.0;
} //filtering
fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// GrindAmp::GrindAmpKernel::Process
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void GrindAmp::GrindAmpKernel::Process( const Float32 *inSourceP,
Float32 *inDestP,
UInt32 inFramesToProcess,
UInt32 inNumChannels,
bool &ioSilence )
{
UInt32 nSampleFrames = inFramesToProcess;
const Float32 *sourceP = inSourceP;
Float32 *destP = inDestP;
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= GetSampleRate();
int cycleEnd = floor(overallscale);
if (cycleEnd < 1) cycleEnd = 1;
if (cycleEnd > 4) cycleEnd = 4;
//this is going to be 2 for 88.1 or 96k, 3 for silly people, 4 for 176 or 192k
if (cycle > cycleEnd-1) cycle = cycleEnd-1; //sanity check
double inputlevel = pow(GetParameter( kParam_One ),2);
double samplerate = GetSampleRate();
double trimEQ = 1.1-GetParameter( kParam_Two );
double toneEQ = trimEQ/1.2;
trimEQ /= 50.0;
trimEQ += 0.165;
double EQ = ((trimEQ-(toneEQ/6.1)) / samplerate)*22050.0;
double BEQ = ((trimEQ+(toneEQ/2.1)) / samplerate)*22050.0;
double outputlevel = GetParameter( kParam_Three );
double wet = GetParameter( kParam_Four );
double bassdrive = 1.57079633*(2.5-toneEQ);
double cutoff = (18000.0+(GetParameter( kParam_Two )*1000.0)) / GetSampleRate();
if (cutoff > 0.49) cutoff = 0.49; //don't crash if run at 44.1k
if (cutoff < 0.001) cutoff = 0.001; //or if cutoff's too low
fixF[fix_freq] = fixE[fix_freq] = fixD[fix_freq] = fixC[fix_freq] = fixB[fix_freq] = fixA[fix_freq] = cutoff;
fixA[fix_reso] = 4.46570214;
fixB[fix_reso] = 1.51387132;
fixC[fix_reso] = 0.93979296;
fixD[fix_reso] = 0.70710678;
fixE[fix_reso] = 0.52972649;
fixF[fix_reso] = 0.50316379;
double K = tan(M_PI * fixA[fix_freq]); //lowpass
double norm = 1.0 / (1.0 + K / fixA[fix_reso] + K * K);
fixA[fix_a0] = K * K * norm;
fixA[fix_a1] = 2.0 * fixA[fix_a0];
fixA[fix_a2] = fixA[fix_a0];
fixA[fix_b1] = 2.0 * (K * K - 1.0) * norm;
fixA[fix_b2] = (1.0 - K / fixA[fix_reso] + K * K) * norm;
K = tan(M_PI * fixB[fix_freq]);
norm = 1.0 / (1.0 + K / fixB[fix_reso] + K * K);
fixB[fix_a0] = K * K * norm;
fixB[fix_a1] = 2.0 * fixB[fix_a0];
fixB[fix_a2] = fixB[fix_a0];
fixB[fix_b1] = 2.0 * (K * K - 1.0) * norm;
fixB[fix_b2] = (1.0 - K / fixB[fix_reso] + K * K) * norm;
K = tan(M_PI * fixC[fix_freq]);
norm = 1.0 / (1.0 + K / fixC[fix_reso] + K * K);
fixC[fix_a0] = K * K * norm;
fixC[fix_a1] = 2.0 * fixC[fix_a0];
fixC[fix_a2] = fixC[fix_a0];
fixC[fix_b1] = 2.0 * (K * K - 1.0) * norm;
fixC[fix_b2] = (1.0 - K / fixC[fix_reso] + K * K) * norm;
K = tan(M_PI * fixD[fix_freq]);
norm = 1.0 / (1.0 + K / fixD[fix_reso] + K * K);
fixD[fix_a0] = K * K * norm;
fixD[fix_a1] = 2.0 * fixD[fix_a0];
fixD[fix_a2] = fixD[fix_a0];
fixD[fix_b1] = 2.0 * (K * K - 1.0) * norm;
fixD[fix_b2] = (1.0 - K / fixD[fix_reso] + K * K) * norm;
K = tan(M_PI * fixE[fix_freq]);
norm = 1.0 / (1.0 + K / fixE[fix_reso] + K * K);
fixE[fix_a0] = K * K * norm;
fixE[fix_a1] = 2.0 * fixE[fix_a0];
fixE[fix_a2] = fixE[fix_a0];
fixE[fix_b1] = 2.0 * (K * K - 1.0) * norm;
fixE[fix_b2] = (1.0 - K / fixE[fix_reso] + K * K) * norm;
K = tan(M_PI * fixF[fix_freq]);
norm = 1.0 / (1.0 + K / fixF[fix_reso] + K * K);
fixF[fix_a0] = K * K * norm;
fixF[fix_a1] = 2.0 * fixF[fix_a0];
fixF[fix_a2] = fixF[fix_a0];
fixF[fix_b1] = 2.0 * (K * K - 1.0) * norm;
fixF[fix_b2] = (1.0 - K / fixF[fix_reso] + K * K) * norm;
while (nSampleFrames-- > 0) {
double inputSample = *sourceP;
if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17;
double drySample = inputSample;
double outSample = (inputSample * fixA[fix_a0]) + fixA[fix_sL1];
fixA[fix_sL1] = (inputSample * fixA[fix_a1]) - (outSample * fixA[fix_b1]) + fixA[fix_sL2];
fixA[fix_sL2] = (inputSample * fixA[fix_a2]) - (outSample * fixA[fix_b2]);
inputSample = outSample; //fixed biquad filtering ultrasonics
inputSample *= inputlevel;
iirSampleA = (iirSampleA * (1 - EQ)) + (inputSample * EQ);
inputSample = inputSample - (iirSampleA*0.92);
//highpass
if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0;
double bridgerectifier = fabs(inputSample);
double inverse = (bridgerectifier+1.0)/2.0;
bridgerectifier = (smoothA + (secondA*inverse) + (thirdA*bridgerectifier) + inputSample);
thirdA = secondA;
secondA = smoothA;
smoothA = inputSample;
double basscatch = inputSample = bridgerectifier;
//three-sample averaging lowpass
outSample = (inputSample * fixB[fix_a0]) + fixB[fix_sL1];
fixB[fix_sL1] = (inputSample * fixB[fix_a1]) - (outSample * fixB[fix_b1]) + fixB[fix_sL2];
fixB[fix_sL2] = (inputSample * fixB[fix_a2]) - (outSample * fixB[fix_b2]);
inputSample = outSample; //fixed biquad filtering ultrasonics
inputSample *= inputlevel;
iirSampleB = (iirSampleB * (1 - EQ)) + (inputSample * EQ);
inputSample = inputSample - (iirSampleB*0.79);
//highpass
if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0;
//overdrive
bridgerectifier = fabs(inputSample);
inverse = (bridgerectifier+1.0)/2.0;
bridgerectifier = (smoothB + (secondB*inverse) + (thirdB*bridgerectifier) + inputSample);
thirdB = secondB;
secondB = smoothB;
smoothB = inputSample;
inputSample = bridgerectifier;
//three-sample averaging lowpass
iirSampleC = (iirSampleC * (1 - BEQ)) + (basscatch * BEQ);
basscatch = iirSampleC*bassdrive;
bridgerectifier = fabs(basscatch);
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = sin(bridgerectifier);
if (basscatch > 0.0) basscatch = bridgerectifier;
else basscatch = -bridgerectifier;
if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0;
//overdrive
inverse = (bridgerectifier+1.0)/2.0;
bridgerectifier = (smoothC + (secondC*inverse) + (thirdC*bridgerectifier) + inputSample);
thirdC = secondC;
secondC = smoothC;
smoothC = inputSample;
inputSample = bridgerectifier;
//three-sample averaging lowpass
outSample = (inputSample * fixC[fix_a0]) + fixC[fix_sL1];
fixC[fix_sL1] = (inputSample * fixC[fix_a1]) - (outSample * fixC[fix_b1]) + fixC[fix_sL2];
fixC[fix_sL2] = (inputSample * fixC[fix_a2]) - (outSample * fixC[fix_b2]);
inputSample = outSample; //fixed biquad filtering ultrasonics
iirSampleD = (iirSampleD * (1 - BEQ)) + (basscatch * BEQ);
basscatch = iirSampleD*bassdrive;
bridgerectifier = fabs(basscatch);
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = sin(bridgerectifier);
if (basscatch > 0.0) basscatch = bridgerectifier;
else basscatch = -bridgerectifier;
if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0;
//overdrive
inverse = (bridgerectifier+1.0)/2.0;
bridgerectifier = (smoothD + (secondD*inverse) + (thirdD*bridgerectifier) + inputSample);
thirdD = secondD;
secondD = smoothD;
smoothD = inputSample;
inputSample = bridgerectifier;
//three-sample averaging lowpass
outSample = (inputSample * fixD[fix_a0]) + fixD[fix_sL1];
fixD[fix_sL1] = (inputSample * fixD[fix_a1]) - (outSample * fixD[fix_b1]) + fixD[fix_sL2];
fixD[fix_sL2] = (inputSample * fixD[fix_a2]) - (outSample * fixD[fix_b2]);
inputSample = outSample; //fixed biquad filtering ultrasonics
iirSampleE = (iirSampleE * (1 - BEQ)) + (basscatch * BEQ);
basscatch = iirSampleE*bassdrive;
bridgerectifier = fabs(basscatch);
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = sin(bridgerectifier);
if (basscatch > 0.0) basscatch = bridgerectifier;
else basscatch = -bridgerectifier;
if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0;
//overdrive
inverse = (bridgerectifier+1.0)/2.0;
bridgerectifier = (smoothE + (secondE*inverse) + (thirdE*bridgerectifier) + inputSample);
thirdE = secondE;
secondE = smoothE;
smoothE = inputSample;
inputSample = bridgerectifier;
//three-sample averaging lowpass
iirSampleF = (iirSampleF * (1 - BEQ)) + (basscatch * BEQ);
basscatch = iirSampleF*bassdrive;
bridgerectifier = fabs(basscatch);
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = sin(bridgerectifier);
if (basscatch > 0.0) basscatch = bridgerectifier;
else basscatch = -bridgerectifier;
if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0;
//overdrive
inverse = (bridgerectifier+1.0)/2.0;
bridgerectifier = (smoothF + (secondF*inverse) + (thirdF*bridgerectifier) + inputSample);
thirdF = secondF;
secondF = smoothF;
smoothF = inputSample;
inputSample = bridgerectifier;
//three-sample averaging lowpass
outSample = (inputSample * fixE[fix_a0]) + fixE[fix_sL1];
fixE[fix_sL1] = (inputSample * fixE[fix_a1]) - (outSample * fixE[fix_b1]) + fixE[fix_sL2];
fixE[fix_sL2] = (inputSample * fixE[fix_a2]) - (outSample * fixE[fix_b2]);
inputSample = outSample; //fixed biquad filtering ultrasonics
iirSampleG = (iirSampleG * (1 - BEQ)) + (basscatch * BEQ);
basscatch = iirSampleG*bassdrive;
bridgerectifier = fabs(basscatch);
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = sin(bridgerectifier);
if (basscatch > 0.0) basscatch = bridgerectifier;
else basscatch = -bridgerectifier;
if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0;
//overdrive
inverse = (bridgerectifier+1.0)/2.0;
bridgerectifier = (smoothG + (secondG*inverse) + (thirdG*bridgerectifier) + inputSample);
thirdG = secondG;
secondG = smoothG;
smoothG = inputSample;
inputSample = bridgerectifier;
//three-sample averaging lowpass
iirSampleH = (iirSampleH * (1 - BEQ)) + (basscatch * BEQ);
basscatch = iirSampleH*bassdrive;
bridgerectifier = fabs(basscatch);
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = sin(bridgerectifier);
if (basscatch > 0.0) basscatch = bridgerectifier;
else basscatch = -bridgerectifier;
if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0;
//overdrive
inverse = (bridgerectifier+1.0)/2.0;
bridgerectifier = (smoothH + (secondH*inverse) + (thirdH*bridgerectifier) + inputSample);
thirdH = secondH;
secondH = smoothH;
smoothH = inputSample;
inputSample = bridgerectifier;
//three-sample averaging lowpass
outSample = (inputSample * fixF[fix_a0]) + fixF[fix_sL1];
fixF[fix_sL1] = (inputSample * fixF[fix_a1]) - (outSample * fixF[fix_b1]) + fixF[fix_sL2];
fixF[fix_sL2] = (inputSample * fixF[fix_a2]) - (outSample * fixF[fix_b2]);
inputSample = outSample; //fixed biquad filtering ultrasonics
iirSampleI = (iirSampleI * (1 - BEQ)) + (basscatch * BEQ);
basscatch = iirSampleI*bassdrive;
bridgerectifier = fabs(basscatch);
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = sin(bridgerectifier);
if (basscatch > 0.0) basscatch = bridgerectifier;
else basscatch = -bridgerectifier;
if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0;
//overdrive
inverse = (bridgerectifier+1.0)/2.0;
bridgerectifier = (smoothI + (secondI*inverse) + (thirdI*bridgerectifier) + inputSample);
thirdI = secondI;
secondI = smoothI;
smoothI = inputSample;
inputSample = bridgerectifier;
//three-sample averaging lowpass
bridgerectifier = fabs(inputSample);
inverse = (bridgerectifier+1.0)/2.0;
bridgerectifier = (smoothJ + (secondJ*inverse) + (thirdJ*bridgerectifier) + inputSample);
thirdJ = secondJ;
secondJ = smoothJ;
smoothJ = inputSample;
inputSample = bridgerectifier;
//three-sample averaging lowpass
bridgerectifier = fabs(inputSample);
inverse = (bridgerectifier+1.0)/2.0;
bridgerectifier = (smoothK + (secondK*inverse) + (thirdK*bridgerectifier) + inputSample);
thirdK = secondK;
secondK = smoothK;
smoothK = inputSample;
inputSample = bridgerectifier;
//three-sample averaging lowpass
basscatch /= 2.0;
inputSample = (inputSample*toneEQ)+basscatch;
//extra lowpass for 4*12" speakers
bridgerectifier = fabs(inputSample*outputlevel);
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = sin(bridgerectifier);
if (inputSample > 0) inputSample = bridgerectifier;
else inputSample = -bridgerectifier;
inputSample += basscatch;
//split bass between overdrive and clean
inputSample /= (1.0+toneEQ);
double randy = ((double(fpd)/UINT32_MAX)*0.061);
inputSample = ((inputSample*(1-randy))+(storeSample*randy))*outputlevel;
storeSample = inputSample;
if (wet !=1.0) {
inputSample = (inputSample * wet) + (drySample * (1.0-wet));
}
//Dry/Wet control, defaults to the last slider
//amp
cycle++;
if (cycle == cycleEnd) {
//drySample = inputSample;
double temp = (inputSample + smoothCabA)/3.0;
smoothCabA = inputSample;
inputSample = temp;
b[83] = b[82]; b[82] = b[81]; b[81] = b[80]; b[80] = b[79];
b[79] = b[78]; b[78] = b[77]; b[77] = b[76]; b[76] = b[75]; b[75] = b[74]; b[74] = b[73]; b[73] = b[72]; b[72] = b[71];
b[71] = b[70]; b[70] = b[69]; b[69] = b[68]; b[68] = b[67]; b[67] = b[66]; b[66] = b[65]; b[65] = b[64]; b[64] = b[63];
b[63] = b[62]; b[62] = b[61]; b[61] = b[60]; b[60] = b[59]; b[59] = b[58]; b[58] = b[57]; b[57] = b[56]; b[56] = b[55];
b[55] = b[54]; b[54] = b[53]; b[53] = b[52]; b[52] = b[51]; b[51] = b[50]; b[50] = b[49]; b[49] = b[48]; b[48] = b[47];
b[47] = b[46]; b[46] = b[45]; b[45] = b[44]; b[44] = b[43]; b[43] = b[42]; b[42] = b[41]; b[41] = b[40]; b[40] = b[39];
b[39] = b[38]; b[38] = b[37]; b[37] = b[36]; b[36] = b[35]; b[35] = b[34]; b[34] = b[33]; b[33] = b[32]; b[32] = b[31];
b[31] = b[30]; b[30] = b[29]; b[29] = b[28]; b[28] = b[27]; b[27] = b[26]; b[26] = b[25]; b[25] = b[24]; b[24] = b[23];
b[23] = b[22]; b[22] = b[21]; b[21] = b[20]; b[20] = b[19]; b[19] = b[18]; b[18] = b[17]; b[17] = b[16]; b[16] = b[15];
b[15] = b[14]; b[14] = b[13]; b[13] = b[12]; b[12] = b[11]; b[11] = b[10]; b[10] = b[9]; b[9] = b[8]; b[8] = b[7];
b[7] = b[6]; b[6] = b[5]; b[5] = b[4]; b[4] = b[3]; b[3] = b[2]; b[2] = b[1]; b[1] = b[0]; b[0] = inputSample;
inputSample += (b[1] * (1.29550481610475132 + (0.19713872057074355*fabs(b[1]))));
inputSample += (b[2] * (1.42302569895462616 + (0.30599505521284787*fabs(b[2]))));
inputSample += (b[3] * (1.28728195804197565 + (0.23168333460446133*fabs(b[3]))));
inputSample += (b[4] * (0.88553784290822690 + (0.14263256172918892*fabs(b[4]))));
inputSample += (b[5] * (0.37129054918432319 + (0.00150040944205920*fabs(b[5]))));
inputSample -= (b[6] * (0.12150959412556320 + (0.32776273620569107*fabs(b[6]))));
inputSample -= (b[7] * (0.44900065463203775 + (0.74101214925298819*fabs(b[7]))));
inputSample -= (b[8] * (0.54058781908186482 + (1.07821707459008387*fabs(b[8]))));
inputSample -= (b[9] * (0.49361966401791391 + (1.23540109014850508*fabs(b[9]))));
inputSample -= (b[10] * (0.39819495093078133 + (1.11247213730917749*fabs(b[10]))));
inputSample -= (b[11] * (0.31379279985435521 + (0.80330360359638298*fabs(b[11]))));
inputSample -= (b[12] * (0.30744359242808555 + (0.42132528876858205*fabs(b[12]))));
inputSample -= (b[13] * (0.33943170284673974 + (0.09183418349389982*fabs(b[13]))));
inputSample -= (b[14] * (0.33838775119286391 - (0.06453051658561271*fabs(b[14]))));
inputSample -= (b[15] * (0.30682305697961665 - (0.09549380253249232*fabs(b[15]))));
inputSample -= (b[16] * (0.23408741339295336 - (0.08083404732361277*fabs(b[16]))));
inputSample -= (b[17] * (0.10411746814025019 + (0.00253651281245780*fabs(b[17]))));
inputSample += (b[18] * (0.00133623776084696 - (0.04447267870865820*fabs(b[18]))));
inputSample += (b[19] * (0.02461903992114161 + (0.07530671732655550*fabs(b[19]))));
inputSample += (b[20] * (0.02086715842475373 + (0.22795860236804899*fabs(b[20]))));
inputSample += (b[21] * (0.02761433637100917 + (0.26108320417844094*fabs(b[21]))));
inputSample += (b[22] * (0.04475285369162533 + (0.19160705011061663*fabs(b[22]))));
inputSample += (b[23] * (0.09447338372862381 + (0.03681550508743799*fabs(b[23]))));
inputSample += (b[24] * (0.13445890343722280 - (0.13713036462146147*fabs(b[24]))));
inputSample += (b[25] * (0.13872868945088121 - (0.22401242373298191*fabs(b[25]))));
inputSample += (b[26] * (0.14915650097434549 - (0.26718804981526367*fabs(b[26]))));
inputSample += (b[27] * (0.12766643217091783 - (0.27745664795660430*fabs(b[27]))));
inputSample += (b[28] * (0.03675849788393101 - (0.18338278173550679*fabs(b[28]))));
inputSample -= (b[29] * (0.06307306864232835 + (0.06089480869040766*fabs(b[29]))));
inputSample -= (b[30] * (0.14947389348962944 + (0.04642103054798480*fabs(b[30]))));
inputSample -= (b[31] * (0.25235266566401526 + (0.08423062596460507*fabs(b[31]))));
inputSample -= (b[32] * (0.33496344048679683 + (0.09808328256677995*fabs(b[32]))));
inputSample -= (b[33] * (0.36590030482175445 + (0.10622650888958179*fabs(b[33]))));
inputSample -= (b[34] * (0.35015197011464372 + (0.08982043516016047*fabs(b[34]))));
inputSample -= (b[35] * (0.26808437585665090 + (0.00735561860229533*fabs(b[35]))));
inputSample -= (b[36] * (0.11624318543291220 - (0.07142484314510467*fabs(b[36]))));
inputSample += (b[37] * (0.05617084165377551 + (0.11785854050350089*fabs(b[37]))));
inputSample += (b[38] * (0.20540028692589385 + (0.20479174663329586*fabs(b[38]))));
inputSample += (b[39] * (0.30455415003043818 + (0.29074864580096849*fabs(b[39]))));
inputSample += (b[40] * (0.33810750937829476 + (0.29182307921316802*fabs(b[40]))));
inputSample += (b[41] * (0.31936133365277430 + (0.26535537727394987*fabs(b[41]))));
inputSample += (b[42] * (0.27388548321981876 + (0.19735049990538350*fabs(b[42]))));
inputSample += (b[43] * (0.21454597517994098 + (0.06415909270247236*fabs(b[43]))));
inputSample += (b[44] * (0.15001045817707717 - (0.03831118543404573*fabs(b[44]))));
inputSample += (b[45] * (0.07283437284653138 - (0.09281952429543777*fabs(b[45]))));
inputSample -= (b[46] * (0.03917872184241358 + (0.14306291461398810*fabs(b[46]))));
inputSample -= (b[47] * (0.16695932032148642 + (0.19138995946950504*fabs(b[47]))));
inputSample -= (b[48] * (0.27055854466909462 + (0.22531296466343192*fabs(b[48]))));
inputSample -= (b[49] * (0.33256357307578271 + (0.23305840475692102*fabs(b[49]))));
inputSample -= (b[50] * (0.33459770116834442 + (0.24091822618917569*fabs(b[50]))));
inputSample -= (b[51] * (0.27156687236338090 + (0.24062938573512443*fabs(b[51]))));
inputSample -= (b[52] * (0.17197093288412094 + (0.19083085091993421*fabs(b[52]))));
inputSample -= (b[53] * (0.06738628195910543 + (0.10268609751019808*fabs(b[53]))));
inputSample += (b[54] * (0.00222429218204290 + (0.01439664435720548*fabs(b[54]))));
inputSample += (b[55] * (0.01346992803494091 + (0.15947137113534526*fabs(b[55]))));
inputSample -= (b[56] * (0.02038911881377448 - (0.26763170752416160*fabs(b[56]))));
inputSample -= (b[57] * (0.08233579178189687 - (0.29415931086406055*fabs(b[57]))));
inputSample -= (b[58] * (0.15447855089824883 - (0.26489186990840807*fabs(b[58]))));
inputSample -= (b[59] * (0.20518281113362655 - (0.16135382257522859*fabs(b[59]))));
inputSample -= (b[60] * (0.22244686050232007 + (0.00847180390247432*fabs(b[60]))));
inputSample -= (b[61] * (0.21849243134998034 + (0.14460595245753741*fabs(b[61]))));
inputSample -= (b[62] * (0.20256105734574054 + (0.18932793221831667*fabs(b[62]))));
inputSample -= (b[63] * (0.18604070054295399 + (0.17250665610927965*fabs(b[63]))));
inputSample -= (b[64] * (0.17222844322058231 + (0.12992472027850357*fabs(b[64]))));
inputSample -= (b[65] * (0.14447856616566443 + (0.09089219002147308*fabs(b[65]))));
inputSample -= (b[66] * (0.10385520794251019 + (0.08600465834570559*fabs(b[66]))));
inputSample -= (b[67] * (0.07124435678265063 + (0.09071532210549428*fabs(b[67]))));
inputSample -= (b[68] * (0.05216857461197572 + (0.06794061706070262*fabs(b[68]))));
inputSample -= (b[69] * (0.05235381920184123 + (0.02818101717909346*fabs(b[69]))));
inputSample -= (b[70] * (0.07569701245553526 - (0.00634228544764946*fabs(b[70]))));
inputSample -= (b[71] * (0.10320125382718826 - (0.02751486906644141*fabs(b[71]))));
inputSample -= (b[72] * (0.12122120969079088 - (0.05434007312178933*fabs(b[72]))));
inputSample -= (b[73] * (0.13438969117200902 - (0.09135218559713874*fabs(b[73]))));
inputSample -= (b[74] * (0.13534390437529981 - (0.10437672041458675*fabs(b[74]))));
inputSample -= (b[75] * (0.11424128854188388 - (0.08693450726462598*fabs(b[75]))));
inputSample -= (b[76] * (0.08166894518596159 - (0.06949989431475120*fabs(b[76]))));
inputSample -= (b[77] * (0.04293976378555305 - (0.05718625137421843*fabs(b[77]))));
inputSample += (b[78] * (0.00933076320644409 + (0.01728285211520138*fabs(b[78]))));
inputSample += (b[79] * (0.06450430362918153 - (0.02492994833691022*fabs(b[79]))));
inputSample += (b[80] * (0.10187400687649277 - (0.03578455940532403*fabs(b[80]))));
inputSample += (b[81] * (0.11039763294094571 - (0.03995523517573508*fabs(b[81]))));
inputSample += (b[82] * (0.08557960776024547 - (0.03482514309492527*fabs(b[82]))));
inputSample += (b[83] * (0.02730881850805332 - (0.00514750108411127*fabs(b[83]))));
temp = (inputSample + smoothCabB)/3.0;
smoothCabB = inputSample;
inputSample = temp/4.0;
randy = ((double(fpd)/UINT32_MAX)*0.044);
drySample = ((((inputSample*(1-randy))+(lastCabSample*randy))*wet)+(drySample*(1.0-wet)))*outputlevel;
lastCabSample = inputSample;
inputSample = drySample; //cab
if (cycleEnd == 4) {
lastRef[0] = lastRef[4]; //start from previous last
lastRef[2] = (lastRef[0] + inputSample)/2; //half
lastRef[1] = (lastRef[0] + lastRef[2])/2; //one quarter
lastRef[3] = (lastRef[2] + inputSample)/2; //three quarters
lastRef[4] = inputSample; //full
}
if (cycleEnd == 3) {
lastRef[0] = lastRef[3]; //start from previous last
lastRef[2] = (lastRef[0]+lastRef[0]+inputSample)/3; //third
lastRef[1] = (lastRef[0]+inputSample+inputSample)/3; //two thirds
lastRef[3] = inputSample; //full
}
if (cycleEnd == 2) {
lastRef[0] = lastRef[2]; //start from previous last
lastRef[1] = (lastRef[0] + inputSample)/2; //half
lastRef[2] = inputSample; //full
}
if (cycleEnd == 1) lastRef[0] = inputSample;
cycle = 0; //reset
inputSample = lastRef[cycle];
} else {
inputSample = lastRef[cycle];
//we are going through our references now
}
switch (cycleEnd) //multi-pole average using lastRef[] variables
{
case 4:
lastRef[8] = inputSample; inputSample = (inputSample+lastRef[7])*0.5;
lastRef[7] = lastRef[8]; //continue, do not break
case 3:
lastRef[8] = inputSample; inputSample = (inputSample+lastRef[6])*0.5;
lastRef[6] = lastRef[8]; //continue, do not break
case 2:
lastRef[8] = inputSample; inputSample = (inputSample+lastRef[5])*0.5;
lastRef[5] = lastRef[8]; //continue, do not break
case 1:
break; //no further averaging
} //undersampling
//begin 32 bit floating point dither
int expon; frexpf((float)inputSample, &expon);
fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
inputSample += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
//end 32 bit floating point dither
*destP = inputSample;
sourceP += inNumChannels; destP += inNumChannels;
}
}
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