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airwindows/plugins/MacSignedAU/X2Buss/X2Buss.cpp
Christopher Johnson 2335148573 BezEQ3
2026-05-09 20:09:00 -04:00

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/*
* File: X2Buss.cpp
*
* Version: 1.0
*
* Created: 10/31/25
*
* Copyright: Copyright © 2025 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
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* software.
*
* In consideration of your agreement to abide by the following terms, and subject to these terms,
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* endorse or promote products derived from the Apple Software without specific prior written
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*
* 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
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*
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* IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*=============================================================================
X2Buss.cpp
=============================================================================*/
#include "X2Buss.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
AUDIOCOMPONENT_ENTRY(AUBaseFactory, X2Buss)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// X2Buss::X2Buss
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
X2Buss::X2Buss(AudioUnit component)
: AUEffectBase(component)
{
CreateElements();
Globals()->UseIndexedParameters(kNumberOfParameters);
SetParameter(kParam_A, kDefaultValue_ParamA );
SetParameter(kParam_B, kDefaultValue_ParamB );
SetParameter(kParam_C, kDefaultValue_ParamC );
SetParameter(kParam_D, kDefaultValue_ParamD );
SetParameter(kParam_E, kDefaultValue_ParamE );
SetParameter(kParam_F, kDefaultValue_ParamF );
SetParameter(kParam_G, kDefaultValue_ParamG );
SetParameter(kParam_H, kDefaultValue_ParamH );
SetParameter(kParam_I, kDefaultValue_ParamI );
SetParameter(kParam_J, kDefaultValue_ParamJ );
#if AU_DEBUG_DISPATCHER
mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// X2Buss::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult X2Buss::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// X2Buss::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult X2Buss::GetParameterInfo(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
AudioUnitParameterInfo &outParameterInfo )
{
ComponentResult result = noErr;
outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable
| kAudioUnitParameterFlag_IsReadable;
if (inScope == kAudioUnitScope_Global) {
switch(inParameterID)
{
case kParam_A:
AUBase::FillInParameterName (outParameterInfo, kParameterAName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_CustomUnit;
outParameterInfo.unitName = kParameterAUnit;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamA;
break;
case kParam_B:
AUBase::FillInParameterName (outParameterInfo, kParameterBName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamB;
break;
case kParam_C:
AUBase::FillInParameterName (outParameterInfo, kParameterCName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamC;
break;
case kParam_D:
AUBase::FillInParameterName (outParameterInfo, kParameterDName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamD;
break;
case kParam_E:
AUBase::FillInParameterName (outParameterInfo, kParameterEName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_CustomUnit;
outParameterInfo.unitName = kParameterEUnit;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamE;
break;
case kParam_F:
AUBase::FillInParameterName (outParameterInfo, kParameterFName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamF;
break;
case kParam_G:
AUBase::FillInParameterName (outParameterInfo, kParameterGName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamG;
break;
case kParam_H:
AUBase::FillInParameterName (outParameterInfo, kParameterHName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamH;
break;
case kParam_I:
AUBase::FillInParameterName (outParameterInfo, kParameterIName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_CustomUnit;
outParameterInfo.unitName = kParameterIUnit;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamI;
break;
case kParam_J:
AUBase::FillInParameterName (outParameterInfo, kParameterJName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamJ;
break;
default:
result = kAudioUnitErr_InvalidParameter;
break;
}
} else {
result = kAudioUnitErr_InvalidParameter;
}
return result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// X2Buss::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult X2Buss::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// state that plugin supports only stereo-in/stereo-out processing
UInt32 X2Buss::SupportedNumChannels(const AUChannelInfo ** outInfo)
{
if (outInfo != NULL)
{
static AUChannelInfo info;
info.inChannels = 2;
info.outChannels = 2;
*outInfo = &info;
}
return 1;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// X2Buss::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult X2Buss::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// X2Buss::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult X2Buss::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____X2BussEffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// X2Buss::X2BussKernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult X2Buss::Reset(AudioUnitScope inScope, AudioUnitElement inElement)
{
for (int x = 0; x < biq_total; x++) {
highA[x] = 0.0;
highB[x] = 0.0;
highC[x] = 0.0;
midA[x] = 0.0;
midB[x] = 0.0;
midC[x] = 0.0;
lowA[x] = 0.0;
lowB[x] = 0.0;
lowC[x] = 0.0;
}
highLIIR = 0.0;
highRIIR = 0.0;
midLIIR = 0.0;
midRIIR = 0.0;
lowLIIR = 0.0;
lowRIIR = 0.0;
//SmoothEQ2
for (int x = 0; x < bez_total; x++) {bezCompF[x] = 0.0;bezCompS[x] = 0.0;}
bezCompF[bez_cycle] = 1.0; bezMaxF = 0.0;
bezCompS[bez_cycle] = 1.0;
//Dynamics2
lastSampleL = 0.0;
wasPosClipL = false;
wasNegClipL = false;
lastSampleR = 0.0;
wasPosClipR = false;
wasNegClipR = false;
for (int x = 0; x < 17; x++) {intermediateL[x] = 0.0; intermediateR[x] = 0.0;}
for (int x = 0; x < 33; x++) {slewL[x] = 0.0; slewR[x] = 0.0;}
inTrimA = 0.5; inTrimB = 0.5;
fpdL = 1.0; while (fpdL < 16386) fpdL = rand()*UINT32_MAX;
fpdR = 1.0; while (fpdR < 16386) fpdR = rand()*UINT32_MAX;
return noErr;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// X2Buss::ProcessBufferLists
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
OSStatus X2Buss::ProcessBufferLists(AudioUnitRenderActionFlags & ioActionFlags,
const AudioBufferList & inBuffer,
AudioBufferList & outBuffer,
UInt32 inFramesToProcess)
{
Float32 * inputL = (Float32*)(inBuffer.mBuffers[0].mData);
Float32 * inputR = (Float32*)(inBuffer.mBuffers[1].mData);
Float32 * outputL = (Float32*)(outBuffer.mBuffers[0].mData);
Float32 * outputR = (Float32*)(outBuffer.mBuffers[1].mData);
UInt32 nSampleFrames = inFramesToProcess;
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= GetSampleRate();
int spacing = floor(overallscale); //should give us working basic scaling, usually 2 or 4
if (spacing < 1) spacing = 1; if (spacing > 16) spacing = 16;
double trebleGain = (GetParameter( kParam_A )-0.5)*2.0;
trebleGain = 1.0+(trebleGain*fabs(trebleGain)*fabs(trebleGain));
double highmidGain = (GetParameter( kParam_B )-0.5)*2.0;
highmidGain = 1.0+(highmidGain*fabs(highmidGain)*fabs(highmidGain));
double lowmidGain = (GetParameter( kParam_C )-0.5)*2.0;
lowmidGain = 1.0+(lowmidGain*fabs(lowmidGain)*fabs(lowmidGain));
double bassGain = (GetParameter( kParam_D )-0.5)*2.0;
bassGain = 1.0+(bassGain*fabs(bassGain)*fabs(bassGain));
double trebleRef = GetParameter( kParam_E )-0.5;
double highmidRef = GetParameter( kParam_F )-0.5;
double lowmidRef = GetParameter( kParam_G )-0.5;
double bassRef = GetParameter( kParam_H )-0.5;
double highF = 0.75 + ((trebleRef+trebleRef+trebleRef+highmidRef)*0.125);
double bassF = 0.25 + ((lowmidRef+bassRef+bassRef+bassRef)*0.125);
double midF = (highF*0.5) + (bassF*0.5) + ((highmidRef+lowmidRef)*0.125);
double highQ = fmax(fmin(1.0+(highmidRef-trebleRef),4.0),0.125);
double midQ = fmax(fmin(1.0+(lowmidRef-highmidRef),4.0),0.125);
double lowQ = fmax(fmin(1.0+(bassRef-lowmidRef),4.0),0.125);
highA[biq_freq] = ((pow(highF,3)*20000.0)/GetSampleRate());
highC[biq_freq] = highB[biq_freq] = highA[biq_freq] = fmax(fmin(highA[biq_freq],0.4999),0.00025);
double highFreq = pow(highF,3)*20000.0;
double omega = 2.0*M_PI*(highFreq/GetSampleRate());
double biqK = 2.0-cos(omega);
double highCoef = -sqrt((biqK*biqK)-1.0)+biqK;
highA[biq_reso] = 2.24697960 * highQ;
highB[biq_reso] = 0.80193774 * highQ;
highC[biq_reso] = 0.55495813 * highQ;
midA[biq_freq] = ((pow(midF,3)*20000.0)/GetSampleRate());
midC[biq_freq] = midB[biq_freq] = midA[biq_freq] = fmax(fmin(midA[biq_freq],0.4999),0.00025);
double midFreq = pow(midF,3)*20000.0;
omega = 2.0*M_PI*(midFreq/GetSampleRate());
biqK = 2.0-cos(omega);
double midCoef = -sqrt((biqK*biqK)-1.0)+biqK;
midA[biq_reso] = 2.24697960 * midQ;
midB[biq_reso] = 0.80193774 * midQ;
midC[biq_reso] = 0.55495813 * midQ;
lowA[biq_freq] = ((pow(bassF,3)*20000.0)/GetSampleRate());
lowC[biq_freq] = lowB[biq_freq] = lowA[biq_freq] = fmax(fmin(lowA[biq_freq],0.4999),0.00025);
double lowFreq = pow(bassF,3)*20000.0;
omega = 2.0*M_PI*(lowFreq/GetSampleRate());
biqK = 2.0-cos(omega);
double lowCoef = -sqrt((biqK*biqK)-1.0)+biqK;
lowA[biq_reso] = 2.24697960 * lowQ;
lowB[biq_reso] = 0.80193774 * lowQ;
lowC[biq_reso] = 0.55495813 * lowQ;
biqK = tan(M_PI * highA[biq_freq]);
double norm = 1.0 / (1.0 + biqK / highA[biq_reso] + biqK * biqK);
highA[biq_a0] = biqK * biqK * norm;
highA[biq_a1] = 2.0 * highA[biq_a0];
highA[biq_a2] = highA[biq_a0];
highA[biq_b1] = 2.0 * (biqK * biqK - 1.0) * norm;
highA[biq_b2] = (1.0 - biqK / highA[biq_reso] + biqK * biqK) * norm;
biqK = tan(M_PI * highB[biq_freq]);
norm = 1.0 / (1.0 + biqK / highB[biq_reso] + biqK * biqK);
highB[biq_a0] = biqK * biqK * norm;
highB[biq_a1] = 2.0 * highB[biq_a0];
highB[biq_a2] = highB[biq_a0];
highB[biq_b1] = 2.0 * (biqK * biqK - 1.0) * norm;
highB[biq_b2] = (1.0 - biqK / highB[biq_reso] + biqK * biqK) * norm;
biqK = tan(M_PI * highC[biq_freq]);
norm = 1.0 / (1.0 + biqK / highC[biq_reso] + biqK * biqK);
highC[biq_a0] = biqK * biqK * norm;
highC[biq_a1] = 2.0 * highC[biq_a0];
highC[biq_a2] = highC[biq_a0];
highC[biq_b1] = 2.0 * (biqK * biqK - 1.0) * norm;
highC[biq_b2] = (1.0 - biqK / highC[biq_reso] + biqK * biqK) * norm;
biqK = tan(M_PI * midA[biq_freq]);
norm = 1.0 / (1.0 + biqK / midA[biq_reso] + biqK * biqK);
midA[biq_a0] = biqK * biqK * norm;
midA[biq_a1] = 2.0 * midA[biq_a0];
midA[biq_a2] = midA[biq_a0];
midA[biq_b1] = 2.0 * (biqK * biqK - 1.0) * norm;
midA[biq_b2] = (1.0 - biqK / midA[biq_reso] + biqK * biqK) * norm;
biqK = tan(M_PI * midB[biq_freq]);
norm = 1.0 / (1.0 + biqK / midB[biq_reso] + biqK * biqK);
midB[biq_a0] = biqK * biqK * norm;
midB[biq_a1] = 2.0 * midB[biq_a0];
midB[biq_a2] = midB[biq_a0];
midB[biq_b1] = 2.0 * (biqK * biqK - 1.0) * norm;
midB[biq_b2] = (1.0 - biqK / midB[biq_reso] + biqK * biqK) * norm;
biqK = tan(M_PI * midC[biq_freq]);
norm = 1.0 / (1.0 + biqK / midC[biq_reso] + biqK * biqK);
midC[biq_a0] = biqK * biqK * norm;
midC[biq_a1] = 2.0 * midC[biq_a0];
midC[biq_a2] = midC[biq_a0];
midC[biq_b1] = 2.0 * (biqK * biqK - 1.0) * norm;
midC[biq_b2] = (1.0 - biqK / midC[biq_reso] + biqK * biqK) * norm;
biqK = tan(M_PI * lowA[biq_freq]);
norm = 1.0 / (1.0 + biqK / lowA[biq_reso] + biqK * biqK);
lowA[biq_a0] = biqK * biqK * norm;
lowA[biq_a1] = 2.0 * lowA[biq_a0];
lowA[biq_a2] = lowA[biq_a0];
lowA[biq_b1] = 2.0 * (biqK * biqK - 1.0) * norm;
lowA[biq_b2] = (1.0 - biqK / lowA[biq_reso] + biqK * biqK) * norm;
biqK = tan(M_PI * lowB[biq_freq]);
norm = 1.0 / (1.0 + biqK / lowB[biq_reso] + biqK * biqK);
lowB[biq_a0] = biqK * biqK * norm;
lowB[biq_a1] = 2.0 * lowB[biq_a0];
lowB[biq_a2] = lowB[biq_a0];
lowB[biq_b1] = 2.0 * (biqK * biqK - 1.0) * norm;
lowB[biq_b2] = (1.0 - biqK / lowB[biq_reso] + biqK * biqK) * norm;
biqK = tan(M_PI * lowC[biq_freq]);
norm = 1.0 / (1.0 + biqK / lowC[biq_reso] + biqK * biqK);
lowC[biq_a0] = biqK * biqK * norm;
lowC[biq_a1] = 2.0 * lowC[biq_a0];
lowC[biq_a2] = lowC[biq_a0];
lowC[biq_b1] = 2.0 * (biqK * biqK - 1.0) * norm;
lowC[biq_b2] = (1.0 - biqK / lowC[biq_reso] + biqK * biqK) * norm;
//SmoothEQ2
double bezCThresh = pow(1.0-GetParameter( kParam_I ), 6.0) * 8.0;
double bezRez = pow(1.0-GetParameter( kParam_I ), 12.360679774997898) / overallscale;
bezRez = fmin(fmax(bezRez,0.00001),1.0);
int stepped = 999999; if (bezRez > 0.000001) stepped = (int)(1.0/bezRez);
bezRez = 1.0 / stepped;
double bezTrim = 1.0-(bezRez*((double)stepped/(stepped+1.0)));
double sloRez = pow(1.0-GetParameter( kParam_I ),10.0) / overallscale;
sloRez = fmin(fmax(sloRez,0.00001),1.0);
stepped = 999999; if (sloRez > 0.000001) stepped = (int)(1.0/sloRez);
sloRez = 1.0 / stepped;
double sloTrim = 1.0-(sloRez*((double)stepped/(stepped+1.0)));
//Dynamics2
inTrimA = inTrimB; inTrimB = GetParameter( kParam_J )*2.0;
//Console
while (nSampleFrames-- > 0) {
double inputSampleL = *inputL;
double inputSampleR = *inputR;
if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
double trebleL = inputSampleL;
double outSample = (trebleL * highA[biq_a0]) + highA[biq_sL1];
highA[biq_sL1] = (trebleL * highA[biq_a1]) - (outSample * highA[biq_b1]) + highA[biq_sL2];
highA[biq_sL2] = (trebleL * highA[biq_a2]) - (outSample * highA[biq_b2]);
double highmidL = outSample; trebleL -= highmidL;
outSample = (highmidL * midA[biq_a0]) + midA[biq_sL1];
midA[biq_sL1] = (highmidL * midA[biq_a1]) - (outSample * midA[biq_b1]) + midA[biq_sL2];
midA[biq_sL2] = (highmidL * midA[biq_a2]) - (outSample * midA[biq_b2]);
double lowmidL = outSample; highmidL -= lowmidL;
outSample = (lowmidL * lowA[biq_a0]) + lowA[biq_sL1];
lowA[biq_sL1] = (lowmidL * lowA[biq_a1]) - (outSample * lowA[biq_b1]) + lowA[biq_sL2];
lowA[biq_sL2] = (lowmidL * lowA[biq_a2]) - (outSample * lowA[biq_b2]);
double bassL = outSample; lowmidL -= bassL;
trebleL = (bassL*bassGain) + (lowmidL*lowmidGain) + (highmidL*highmidGain) + (trebleL*trebleGain);
//first stage of three crossovers
outSample = (trebleL * highB[biq_a0]) + highB[biq_sL1];
highB[biq_sL1] = (trebleL * highB[biq_a1]) - (outSample * highB[biq_b1]) + highB[biq_sL2];
highB[biq_sL2] = (trebleL * highB[biq_a2]) - (outSample * highB[biq_b2]);
highmidL = outSample; trebleL -= highmidL;
outSample = (highmidL * midB[biq_a0]) + midB[biq_sL1];
midB[biq_sL1] = (highmidL * midB[biq_a1]) - (outSample * midB[biq_b1]) + midB[biq_sL2];
midB[biq_sL2] = (highmidL * midB[biq_a2]) - (outSample * midB[biq_b2]);
lowmidL = outSample; highmidL -= lowmidL;
outSample = (lowmidL * lowB[biq_a0]) + lowB[biq_sL1];
lowB[biq_sL1] = (lowmidL * lowB[biq_a1]) - (outSample * lowB[biq_b1]) + lowB[biq_sL2];
lowB[biq_sL2] = (lowmidL * lowB[biq_a2]) - (outSample * lowB[biq_b2]);
bassL = outSample; lowmidL -= bassL;
trebleL = (bassL*bassGain) + (lowmidL*lowmidGain) + (highmidL*highmidGain) + (trebleL*trebleGain);
//second stage of three crossovers
outSample = (trebleL * highC[biq_a0]) + highC[biq_sL1];
highC[biq_sL1] = (trebleL * highC[biq_a1]) - (outSample * highC[biq_b1]) + highC[biq_sL2];
highC[biq_sL2] = (trebleL * highC[biq_a2]) - (outSample * highC[biq_b2]);
highmidL = outSample; trebleL -= highmidL;
outSample = (highmidL * midC[biq_a0]) + midC[biq_sL1];
midC[biq_sL1] = (highmidL * midC[biq_a1]) - (outSample * midC[biq_b1]) + midC[biq_sL2];
midC[biq_sL2] = (highmidL * midC[biq_a2]) - (outSample * midC[biq_b2]);
lowmidL = outSample; highmidL -= lowmidL;
outSample = (lowmidL * lowC[biq_a0]) + lowC[biq_sL1];
lowC[biq_sL1] = (lowmidL * lowC[biq_a1]) - (outSample * lowC[biq_b1]) + lowC[biq_sL2];
lowC[biq_sL2] = (lowmidL * lowC[biq_a2]) - (outSample * lowC[biq_b2]);
bassL = outSample; lowmidL -= bassL;
trebleL = (bassL*bassGain) + (lowmidL*lowmidGain) + (highmidL*highmidGain) + (trebleL*trebleGain);
//third stage of three crossovers
highLIIR = (highLIIR*highCoef) + (trebleL*(1.0-highCoef));
highmidL = highLIIR; trebleL -= highmidL;
midLIIR = (midLIIR*midCoef) + (highmidL*(1.0-midCoef));
lowmidL = midLIIR; highmidL -= lowmidL;
lowLIIR = (lowLIIR*lowCoef) + (lowmidL*(1.0-lowCoef));
bassL = lowLIIR; lowmidL -= bassL;
inputSampleL = (bassL*bassGain) + (lowmidL*lowmidGain) + (highmidL*highmidGain) + (trebleL*trebleGain);
//fourth stage of three crossovers is the exponential filters
double trebleR = inputSampleR;
outSample = (trebleR * highA[biq_a0]) + highA[biq_sR1];
highA[biq_sR1] = (trebleR * highA[biq_a1]) - (outSample * highA[biq_b1]) + highA[biq_sR2];
highA[biq_sR2] = (trebleR * highA[biq_a2]) - (outSample * highA[biq_b2]);
double highmidR = outSample; trebleR -= highmidR;
outSample = (highmidR * midA[biq_a0]) + midA[biq_sR1];
midA[biq_sR1] = (highmidR * midA[biq_a1]) - (outSample * midA[biq_b1]) + midA[biq_sR2];
midA[biq_sR2] = (highmidR * midA[biq_a2]) - (outSample * midA[biq_b2]);
double lowmidR = outSample; highmidR -= lowmidR;
outSample = (lowmidR * lowA[biq_a0]) + lowA[biq_sR1];
lowA[biq_sR1] = (lowmidR * lowA[biq_a1]) - (outSample * lowA[biq_b1]) + lowA[biq_sR2];
lowA[biq_sR2] = (lowmidR * lowA[biq_a2]) - (outSample * lowA[biq_b2]);
double bassR = outSample; lowmidR -= bassR;
trebleR = (bassR*bassGain) + (lowmidR*lowmidGain) + (highmidR*highmidGain) + (trebleR*trebleGain);
//first stage of three crossovers
outSample = (trebleR * highB[biq_a0]) + highB[biq_sR1];
highB[biq_sR1] = (trebleR * highB[biq_a1]) - (outSample * highB[biq_b1]) + highB[biq_sR2];
highB[biq_sR2] = (trebleR * highB[biq_a2]) - (outSample * highB[biq_b2]);
highmidR = outSample; trebleR -= highmidR;
outSample = (highmidR * midB[biq_a0]) + midB[biq_sR1];
midB[biq_sR1] = (highmidR * midB[biq_a1]) - (outSample * midB[biq_b1]) + midB[biq_sR2];
midB[biq_sR2] = (highmidR * midB[biq_a2]) - (outSample * midB[biq_b2]);
lowmidR = outSample; highmidR -= lowmidR;
outSample = (lowmidR * lowB[biq_a0]) + lowB[biq_sR1];
lowB[biq_sR1] = (lowmidR * lowB[biq_a1]) - (outSample * lowB[biq_b1]) + lowB[biq_sR2];
lowB[biq_sR2] = (lowmidR * lowB[biq_a2]) - (outSample * lowB[biq_b2]);
bassR = outSample; lowmidR -= bassR;
trebleR = (bassR*bassGain) + (lowmidR*lowmidGain) + (highmidR*highmidGain) + (trebleR*trebleGain);
//second stage of three crossovers
outSample = (trebleR * highC[biq_a0]) + highC[biq_sR1];
highC[biq_sR1] = (trebleR * highC[biq_a1]) - (outSample * highC[biq_b1]) + highC[biq_sR2];
highC[biq_sR2] = (trebleR * highC[biq_a2]) - (outSample * highC[biq_b2]);
highmidR = outSample; trebleR -= highmidR;
outSample = (highmidR * midC[biq_a0]) + midC[biq_sR1];
midC[biq_sR1] = (highmidR * midC[biq_a1]) - (outSample * midC[biq_b1]) + midC[biq_sR2];
midC[biq_sR2] = (highmidR * midC[biq_a2]) - (outSample * midC[biq_b2]);
lowmidR = outSample; highmidR -= lowmidR;
outSample = (lowmidR * lowC[biq_a0]) + lowC[biq_sR1];
lowC[biq_sR1] = (lowmidR * lowC[biq_a1]) - (outSample * lowC[biq_b1]) + lowC[biq_sR2];
lowC[biq_sR2] = (lowmidR * lowC[biq_a2]) - (outSample * lowC[biq_b2]);
bassR = outSample; lowmidR -= bassR;
trebleR = (bassR*bassGain) + (lowmidR*lowmidGain) + (highmidR*highmidGain) + (trebleR*trebleGain);
//third stage of three crossovers
highRIIR = (highRIIR*highCoef) + (trebleR*(1.0-highCoef));
highmidR = highRIIR; trebleR -= highmidR;
midRIIR = (midRIIR*midCoef) + (highmidR*(1.0-midCoef));
lowmidR = midRIIR; highmidR -= lowmidR;
lowRIIR = (lowRIIR*lowCoef) + (lowmidR*(1.0-lowCoef));
bassR = lowRIIR; lowmidR -= bassR;
inputSampleR = (bassR*bassGain) + (lowmidR*lowmidGain) + (highmidR*highmidGain) + (trebleR*trebleGain);
//fourth stage of three crossovers is the exponential filters
//SmoothEQ2
if (bezCThresh > 0.0) {
inputSampleL *= ((bezCThresh*0.5)+1.0);
inputSampleR *= ((bezCThresh*0.5)+1.0);
}
bezCompF[bez_cycle] += bezRez;
bezCompF[bez_SampL] += (fabs(inputSampleL) * bezRez);
bezCompF[bez_SampR] += (fabs(inputSampleR) * bezRez);
bezMaxF = fmax(bezMaxF,fmax(fabs(inputSampleL),fabs(inputSampleR)));
if (bezCompF[bez_cycle] > 1.0) {
bezCompF[bez_cycle] -= 1.0;
bezCompF[bez_CL] = bezCompF[bez_BL];
bezCompF[bez_BL] = bezCompF[bez_AL];
bezCompF[bez_AL] = bezCompF[bez_SampL];
bezCompF[bez_SampL] = 0.0;
bezCompF[bez_CR] = bezCompF[bez_BR];
bezCompF[bez_BR] = bezCompF[bez_AR];
bezCompF[bez_AR] = bezCompF[bez_SampR];
bezCompF[bez_SampR] = 0.0;
bezMaxF = 0.0;
}
bezCompS[bez_cycle] += sloRez;
bezCompS[bez_SampL] += (fabs(inputSampleL) * sloRez); //note: SampL is a control voltage
bezCompS[bez_SampR] += (fabs(inputSampleR) * sloRez); //note: SampR is a control voltage
if (bezCompS[bez_cycle] > 1.0) {
bezCompS[bez_cycle] -= 1.0;
bezCompS[bez_CL] = bezCompS[bez_BL];
bezCompS[bez_BL] = bezCompS[bez_AL];
bezCompS[bez_AL] = bezCompS[bez_SampL];
bezCompS[bez_SampL] = 0.0;
bezCompS[bez_CR] = bezCompS[bez_BR];
bezCompS[bez_BR] = bezCompS[bez_AR];
bezCompS[bez_AR] = bezCompS[bez_SampR];
bezCompS[bez_SampR] = 0.0;
}
double X = bezCompF[bez_cycle]*bezTrim;
double CBAFL = bezCompF[bez_BL]+(bezCompF[bez_CL]*(1.0-X)*(1.0-X))+(bezCompF[bez_BL]*2.0*(1.0-X)*X)+(bezCompF[bez_AL]*X*X);
CBAFL *= 0.5;
X = bezCompS[bez_cycle]*sloTrim;
double CBASL = bezCompS[bez_BL]+(bezCompS[bez_CL]*(1.0-X)*(1.0-X))+(bezCompS[bez_BL]*2.0*(1.0-X)*X)+(bezCompS[bez_AL]*X*X);
CBASL *= 0.5;
double CBAMax = fmax(CBASL,CBAFL); if (CBAMax > 0.0) CBAMax = 1.0/CBAMax;
double CBAFade = ((CBASL*-CBAMax)+(CBAFL*CBAMax)+1.0)*0.5;
if (bezCThresh > 0.0) inputSampleL *= 1.0-(fmin(((CBASL*(1.0-CBAFade))+(CBAFL*CBAFade))*bezCThresh,1.0));
X = bezCompF[bez_cycle]*bezTrim;
double CBAFR = bezCompF[bez_BR]+(bezCompF[bez_CR]*(1.0-X)*(1.0-X))+(bezCompF[bez_BR]*2.0*(1.0-X)*X)+(bezCompF[bez_AR]*X*X);
CBAFR *= 0.5;
X = bezCompS[bez_cycle]*sloTrim;
double CBASR = bezCompS[bez_BR]+(bezCompS[bez_CR]*(1.0-X)*(1.0-X))+(bezCompS[bez_BR]*2.0*(1.0-X)*X)+(bezCompS[bez_AR]*X*X);
CBASR *= 0.5;
CBAMax = fmax(CBASR,CBAFR); if (CBAMax > 0.0) CBAMax = 1.0/CBAMax;
CBAFade = ((CBASR*-CBAMax)+(CBAFR*CBAMax)+1.0)*0.5;
if (bezCThresh > 0.0) inputSampleR *= 1.0-(fmin(((CBASR*(1.0-CBAFade))+(CBAFR*CBAFade))*bezCThresh,1.0));
//Dynamics2
const double temp = (double)nSampleFrames/inFramesToProcess;
double gain = (inTrimA*temp)+(inTrimB*(1.0-temp));
inputSampleL = inputSampleL * gain;
inputSampleR = inputSampleR * gain;
//applies pan section, and smoothed fader gain
//begin ClipOnly3 as a little, compressed chunk that can be dropped into code
double noise = 1.0-((double(fpdL)/UINT32_MAX)*0.076);
if (wasPosClipL == true) { //current will be over
if (inputSampleL<lastSampleL) lastSampleL=(0.9085097*noise)+(inputSampleL*(1.0-noise));
else lastSampleL = 0.94; //~-0.2dB to nearly match ClipOnly and ClipOnly2
} wasPosClipL = false;
if (inputSampleL>0.9085097) {wasPosClipL=true;inputSampleL=(0.9085097*noise)+(lastSampleL*(1.0-noise));}
if (wasNegClipL == true) { //current will be -over
if (inputSampleL > lastSampleL) lastSampleL=(-0.9085097*noise)+(inputSampleL*(1.0-noise));
else lastSampleL = -0.94;
} wasNegClipL = false;
if (inputSampleL<-0.9085097) {wasNegClipL=true;inputSampleL=(-0.9085097*noise)+(lastSampleL*(1.0-noise));}
slewL[spacing*2] = fabs(lastSampleL-inputSampleL);
for (int x = spacing*2; x > 0; x--) slewL[x-1] = slewL[x];
intermediateL[spacing] = inputSampleL; inputSampleL = lastSampleL;
//latency is however many samples equals one 44.1k sample
for (int x = spacing; x > 0; x--) {intermediateL[x-1] = intermediateL[x];} lastSampleL = intermediateL[0];
if (wasPosClipL || wasNegClipL) {
for (int x = spacing; x > 0; x--) lastSampleL += intermediateL[x];
lastSampleL /= spacing;
} double finalSlew = 0.0;
for (int x = spacing*2; x >= 0; x--) if (finalSlew < slewL[x]) finalSlew = slewL[x];
double postclip = 0.94 / (1.0+(finalSlew*1.3986013));
if (inputSampleL > postclip) inputSampleL = postclip; if (inputSampleL < -postclip) inputSampleL = -postclip;
noise = 1.0-((double(fpdR)/UINT32_MAX)*0.076);
if (wasPosClipR == true) { //current will be over
if (inputSampleR<lastSampleR) lastSampleR=(0.9085097*noise)+(inputSampleR*(1.0-noise));
else lastSampleR = 0.94; //~-0.2dB to nearly match ClipOnly and ClipOnly2
} wasPosClipR = false;
if (inputSampleR>0.9085097) {wasPosClipR=true;inputSampleR=(0.9085097*noise)+(lastSampleR*(1.0-noise));}
if (wasNegClipR == true) { //current will be -over
if (inputSampleR > lastSampleR) lastSampleR=(-0.9085097*noise)+(inputSampleR*(1.0-noise));
else lastSampleR = -0.94;
} wasNegClipR = false;
if (inputSampleR<-0.9085097) {wasNegClipR=true;inputSampleR=(-0.9085097*noise)+(lastSampleR*(1.0-noise));}
slewR[spacing*2] = fabs(lastSampleR-inputSampleR);
for (int x = spacing*2; x > 0; x--) slewR[x-1] = slewR[x];
intermediateR[spacing] = inputSampleR; inputSampleR = lastSampleR;
//latency is however many samples equals one 44.1k sample
for (int x = spacing; x > 0; x--) {intermediateR[x-1] = intermediateR[x];} lastSampleR = intermediateR[0];
if (wasPosClipR || wasNegClipR) {
for (int x = spacing; x > 0; x--) lastSampleR += intermediateR[x];
lastSampleR /= spacing;
} finalSlew = 0.0;
for (int x = spacing*2; x >= 0; x--) if (finalSlew < slewR[x]) finalSlew = slewR[x];
postclip = 0.94 / (1.0+(finalSlew*1.3986013));
if (inputSampleR > postclip) inputSampleR = postclip; if (inputSampleR < -postclip) inputSampleR = -postclip;
//end ClipOnly3 as a little, compressed chunk that can be dropped into code
//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)) * 3.553e-44l * pow(2,expon+62));
frexpf((float)inputSampleR, &expon);
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
if (fpdL-fpdR < 1073741824 || fpdR-fpdL < 1073741824) {
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;}
inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 3.553e-44l * pow(2,expon+62));
//end 32 bit stereo floating point dither
*outputL = inputSampleL;
*outputR = inputSampleR;
//direct stereo out
inputL += 1;
inputR += 1;
outputL += 1;
outputR += 1;
}
return noErr;
}
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