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

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/*
* File: LilAmp.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.
*
*/
/*=============================================================================
LilAmp.cpp
=============================================================================*/
#include "LilAmp.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
AUDIOCOMPONENT_ENTRY(AUBaseFactory, LilAmp)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// LilAmp::LilAmp
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LilAmp::LilAmp(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
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// LilAmp::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult LilAmp::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// LilAmp::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult LilAmp::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;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// LilAmp::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult LilAmp::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// LilAmp::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult LilAmp::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// LilAmp::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult LilAmp::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____LilAmpEffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// LilAmp::LilAmpKernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void LilAmp::LilAmpKernel::Reset()
{
lastSample = 0.0;
storeSample = 0.0;
lastSlew = 0.0;
iirSampleA = 0.0;
iirSampleB = 0.0;
iirSampleC = 0.0;
iirSampleD = 0.0;
iirSampleE = 0.0;
OddA = 0.0;
OddB = 0.0;
OddC = 0.0;
OddD = 0.0;
OddE = 0.0;
EvenA = 0.0;
EvenB = 0.0;
EvenC = 0.0;
EvenD = 0.0;
EvenE = 0.0;
flip = false; //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;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// LilAmp::LilAmpKernel::Process
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void LilAmp::LilAmpKernel::Process( const Float32 *inSourceP,
Float32 *inDestP,
UInt32 inFramesToProcess,
UInt32 inNumChannels,
bool &ioSilence )
{
UInt32 nSampleFrames = inFramesToProcess;
const Float32 *sourceP = inSourceP;
Float32 *destP = inDestP;
double inputlevel = GetParameter( kParam_One )*6.0;
double EQ = (GetParameter( kParam_Two )/ GetSampleRate())*22050;
double basstrim = GetParameter( kParam_Two );
double outputlevel = GetParameter( kParam_Three );
double wet = GetParameter( kParam_Four );
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 skewlevel = pow(basstrim,2) * outputlevel;
double cutoff = (15000.0+(GetParameter( kParam_Two )*10000.0)) / 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
double skew = (inputSample - lastSample);
lastSample = inputSample;
//skew will be direction/angle
double bridgerectifier = fabs(skew);
if (bridgerectifier > 3.1415926) bridgerectifier = 3.1415926;
//for skew we want it to go to zero effect again, so we use full range of the sine
bridgerectifier = sin(bridgerectifier);
if (skew > 0) skew = bridgerectifier;
else skew = -bridgerectifier;
//skew is now sined and clamped and then re-amplified again
skew *= inputSample;
skew *= skewlevel;
inputSample *= basstrim;
inputSample *= inputlevel;
double offset = (1.0 - EQ) + (fabs(inputSample)*EQ);
if (offset < 0) offset = 0;
if (offset > 1) offset = 1;
iirSampleA = (iirSampleA * (1 - (offset * EQ))) + (inputSample * (offset * EQ));
inputSample = inputSample - iirSampleA;
//highpass
bridgerectifier = fabs(inputSample) + skew;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = (sin(bridgerectifier) * 1.57079633) + skew;
if (inputSample > 0) inputSample = (inputSample*(-0.57079633+skew))+(bridgerectifier*(1.57079633+skew));
else inputSample = (inputSample*(-0.57079633+skew))-(bridgerectifier*(1.57079633+skew));
//overdrive
iirSampleC = (iirSampleC * (1 - (offset * EQ))) + (inputSample * (offset * EQ));
inputSample = iirSampleC;
//lowpass. Use offset from before gain stage
//finished first gain stage
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;
offset = (1.0 + offset) / 2.0;
iirSampleB = (iirSampleB * (1 - (offset * EQ))) + (inputSample * (offset * EQ));
inputSample = inputSample - iirSampleB;
//highpass
bridgerectifier = fabs(inputSample) + skew;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = (sin(bridgerectifier) * 1.57079633) + skew;
if (inputSample > 0) inputSample = (inputSample*(-0.57079633+skew))+(bridgerectifier*(1.57079633+skew));
else inputSample = (inputSample*(-0.57079633+skew))-(bridgerectifier*(1.57079633+skew));
//overdrive
iirSampleD = (iirSampleD * (1 - (offset * EQ))) + (inputSample * (offset * EQ));
inputSample = iirSampleD;
//lowpass. Use offset from before gain stage
if (flip)
{
OddD = OddC; OddC = OddB; OddB = OddA; OddA = inputSample;
inputSample = (OddA + OddB + OddC + OddD) / 4.0;
}
else
{
EvenD = EvenC; EvenC = EvenB; EvenB = EvenA; EvenA = inputSample;
inputSample = (EvenA + EvenB + EvenC + EvenD) / 4.0;
}
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
inputSample *= inputlevel;
bridgerectifier = fabs(inputSample) + skew;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = sin(bridgerectifier) * 1.57079633;
if (inputSample > 0) inputSample = (inputSample*-0.57079633)+(bridgerectifier*1.57079633);
else inputSample = (inputSample*-0.57079633)-(bridgerectifier*1.57079633);
//output stage has less gain, no highpass, straight lowpass
iirSampleE = (iirSampleE * (1 - EQ)) + (inputSample * EQ);
inputSample = iirSampleE;
//lowpass. Use offset from before gain stage
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
inputSample = sin(inputSample*outputlevel);
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
double randy = ((double(fpd)/UINT32_MAX)*0.034);
inputSample = ((inputSample*(1-randy))+(storeSample*randy))*outputlevel;
storeSample = inputSample;
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
flip = !flip;
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[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] * (1.42133070619855229 - (0.18270903813104500*fabs(b[1]))));
inputSample += (b[2] * (1.47209686171873821 - (0.27954009590498585*fabs(b[2]))));
inputSample += (b[3] * (1.34648011331265294 - (0.47178343556301960*fabs(b[3]))));
inputSample += (b[4] * (0.82133804036124580 - (0.41060189990353935*fabs(b[4]))));
inputSample += (b[5] * (0.21628057120466901 - (0.26062442734317454*fabs(b[5]))));
inputSample -= (b[6] * (0.30306716082877883 + (0.10067648425439185*fabs(b[6]))));
inputSample -= (b[7] * (0.69484313178531876 - (0.09655574841702286*fabs(b[7]))));
inputSample -= (b[8] * (0.88320822356980833 - (0.26501644327144314*fabs(b[8]))));
inputSample -= (b[9] * (0.81326147029423723 - (0.31115926837054075*fabs(b[9]))));
inputSample -= (b[10] * (0.56728759049069222 - (0.23304233545561287*fabs(b[10]))));
inputSample -= (b[11] * (0.33340326645198737 - (0.12361361388240180*fabs(b[11]))));
inputSample -= (b[12] * (0.20280263733605616 - (0.03531960962500105*fabs(b[12]))));
inputSample -= (b[13] * (0.15864533788751345 + (0.00355160825317868*fabs(b[13]))));
inputSample -= (b[14] * (0.12544767480555119 + (0.01979010423176500*fabs(b[14]))));
inputSample -= (b[15] * (0.06666788902658917 + (0.00188830739903378*fabs(b[15]))));
inputSample += (b[16] * (0.02977793355081072 + (0.02304216615605394*fabs(b[16]))));
inputSample += (b[17] * (0.12821526330916558 + (0.02636238376777800*fabs(b[17]))));
inputSample += (b[18] * (0.19933812710210136 - (0.02932657234709721*fabs(b[18]))));
inputSample += (b[19] * (0.18346460191225772 - (0.12859581955080629*fabs(b[19]))));
inputSample -= (b[20] * (0.00088697526755385 + (0.15855257539277415*fabs(b[20]))));
inputSample -= (b[21] * (0.28904286712096761 + (0.06226286786982616*fabs(b[21]))));
inputSample -= (b[22] * (0.49133546282552537 - (0.06512851581813534*fabs(b[22]))));
inputSample -= (b[23] * (0.52908013030763046 - (0.13606992188523465*fabs(b[23]))));
inputSample -= (b[24] * (0.45897241332311706 - (0.15527194946346906*fabs(b[24]))));
inputSample -= (b[25] * (0.35535938629924352 - (0.13634771941703441*fabs(b[25]))));
inputSample -= (b[26] * (0.26185269405237693 - (0.08736651482771546*fabs(b[26]))));
inputSample -= (b[27] * (0.19997351944186473 - (0.01714565029656306*fabs(b[27]))));
inputSample -= (b[28] * (0.18894054145105646 + (0.04557612705740050*fabs(b[28]))));
inputSample -= (b[29] * (0.24043993691153928 + (0.05267500387081067*fabs(b[29]))));
inputSample -= (b[30] * (0.29191852873822671 + (0.01922151122971644*fabs(b[30]))));
inputSample -= (b[31] * (0.29399783430587761 - (0.02238952856106585*fabs(b[31]))));
inputSample -= (b[32] * (0.26662219155294159 - (0.07760819463416335*fabs(b[32]))));
inputSample -= (b[33] * (0.20881206667122221 - (0.11930017354479640*fabs(b[33]))));
inputSample -= (b[34] * (0.12916658879944876 - (0.11798638949823513*fabs(b[34]))));
inputSample -= (b[35] * (0.07678815166012012 - (0.06826864734598684*fabs(b[35]))));
inputSample -= (b[36] * (0.08568505484529348 - (0.00510459741104792*fabs(b[36]))));
inputSample -= (b[37] * (0.13613615872486634 + (0.02288223583971244*fabs(b[37]))));
inputSample -= (b[38] * (0.17426657494209266 + (0.02723737220296440*fabs(b[38]))));
inputSample -= (b[39] * (0.17343619261009030 + (0.01412920547179825*fabs(b[39]))));
inputSample -= (b[40] * (0.14548368977428555 - (0.02640418940455951*fabs(b[40]))));
inputSample -= (b[41] * (0.10485295885802372 - (0.06334665781931498*fabs(b[41]))));
inputSample -= (b[42] * (0.06632268974717079 - (0.05960343688612868*fabs(b[42]))));
inputSample -= (b[43] * (0.06915692039882040 - (0.03541337869596061*fabs(b[43]))));
inputSample -= (b[44] * (0.11889611687783583 - (0.02250608307287119*fabs(b[44]))));
inputSample -= (b[45] * (0.14598456370320673 + (0.00280345943128246*fabs(b[45]))));
inputSample -= (b[46] * (0.12312084125613143 + (0.04947283933434576*fabs(b[46]))));
inputSample -= (b[47] * (0.11379940289994711 + (0.06590080966570636*fabs(b[47]))));
inputSample -= (b[48] * (0.12963290754003182 + (0.02597647654256477*fabs(b[48]))));
inputSample -= (b[49] * (0.12723837402978638 - (0.04942071966927938*fabs(b[49]))));
inputSample -= (b[50] * (0.09185015882996231 - (0.10420810015956679*fabs(b[50]))));
inputSample -= (b[51] * (0.04011592913036545 - (0.10234174227772008*fabs(b[51]))));
inputSample += (b[52] * (0.00992597785057113 + (0.05674042373836896*fabs(b[52]))));
inputSample += (b[53] * (0.04921452178306781 - (0.00222698867111080*fabs(b[53]))));
inputSample += (b[54] * (0.06096504883783566 - (0.04040426549982253*fabs(b[54]))));
inputSample += (b[55] * (0.04113530718724200 - (0.04190143593049960*fabs(b[55]))));
inputSample += (b[56] * (0.01292699017654650 - (0.01121994018532499*fabs(b[56]))));
inputSample -= (b[57] * (0.00437123132431870 - (0.02482497612289103*fabs(b[57]))));
inputSample -= (b[58] * (0.02090571264211918 - (0.03732746039260295*fabs(b[58]))));
inputSample -= (b[59] * (0.04749751678612051 - (0.02960060937328099*fabs(b[59]))));
inputSample -= (b[60] * (0.07675095194206227 - (0.02241927084099648*fabs(b[60]))));
inputSample -= (b[61] * (0.08879414028581609 - (0.01144281133042115*fabs(b[61]))));
inputSample -= (b[62] * (0.07378854974999530 + (0.02518742701599147*fabs(b[62]))));
inputSample -= (b[63] * (0.04677309194488959 + (0.08984657372223502*fabs(b[63]))));
inputSample -= (b[64] * (0.02911874044176449 + (0.14202665940555093*fabs(b[64]))));
inputSample -= (b[65] * (0.02103564720234969 + (0.14640411976171003*fabs(b[65]))));
inputSample -= (b[66] * (0.01940626429101940 + (0.10867274382865903*fabs(b[66]))));
inputSample -= (b[67] * (0.03965401793931531 + (0.04775225375522835*fabs(b[67]))));
inputSample -= (b[68] * (0.08102486457314527 - (0.03204447425666343*fabs(b[68]))));
inputSample -= (b[69] * (0.11794849372825778 - (0.12755667382696789*fabs(b[69]))));
inputSample -= (b[70] * (0.11946469076758266 - (0.20151394599125422*fabs(b[70]))));
inputSample -= (b[71] * (0.07404630324668053 - (0.21300634351769704*fabs(b[71]))));
inputSample -= (b[72] * (0.00477584437144086 - (0.16864707684978708*fabs(b[72]))));
inputSample += (b[73] * (0.05924822014377220 + (0.09394651445109450*fabs(b[73]))));
inputSample += (b[74] * (0.10060989907457370 + (0.00419196431884887*fabs(b[74]))));
inputSample += (b[75] * (0.10817907203844988 - (0.07459664480796091*fabs(b[75]))));
inputSample += (b[76] * (0.08701102204768002 - (0.11129477437630560*fabs(b[76]))));
inputSample += (b[77] * (0.05673785623180162 - (0.10638640242375266*fabs(b[77]))));
inputSample += (b[78] * (0.02944190197442081 - (0.08499792583420167*fabs(b[78]))));
inputSample += (b[79] * (0.01570145445652971 - (0.06190456843465320*fabs(b[79]))));
inputSample += (b[80] * (0.02770233032476748 - (0.04573713136865480*fabs(b[80]))));
inputSample += (b[81] * (0.05417160459175360 - (0.03965651064634598*fabs(b[81]))));
inputSample += (b[82] * (0.06080831637644498 - (0.02909500789113911*fabs(b[82]))));
temp = (inputSample + smoothCabB)/3.0;
smoothCabB = inputSample;
inputSample = temp/4.0;
randy = ((double(fpd)/UINT32_MAX)*0.085);
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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