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

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/*
* File: Galactic.cpp
*
* Version: 1.0
*
* Created: 3/20/21
*
* Copyright: Copyright © 2021 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.
*
*/
/*=============================================================================
Galactic.cpp
=============================================================================*/
#include "Galactic.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
COMPONENT_ENTRY(Galactic)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Galactic::Galactic
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Galactic::Galactic(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 );
SetParameter(kParam_Five, kDefaultValue_ParamFive );
#if AU_DEBUG_DISPATCHER
mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Galactic::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Galactic::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Galactic::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Galactic::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;
case kParam_Five:
AUBase::FillInParameterName (outParameterInfo, kParameterFiveName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamFive;
break;
default:
result = kAudioUnitErr_InvalidParameter;
break;
}
} else {
result = kAudioUnitErr_InvalidParameter;
}
return result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Galactic::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Galactic::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 Galactic::SupportedNumChannels(const AUChannelInfo ** outInfo)
{
if (outInfo != NULL)
{
static AUChannelInfo info;
info.inChannels = 2;
info.outChannels = 2;
*outInfo = &info;
}
return 1;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Galactic::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Galactic::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// Galactic::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Galactic::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____GalacticEffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Galactic::GalacticKernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Galactic::Reset(AudioUnitScope inScope, AudioUnitElement inElement)
{
iirAL = 0.0; iirAR = 0.0;
iirBL = 0.0; iirBR = 0.0;
for(int count = 0; count < 6479; count++) {aIL[count] = 0.0;aIR[count] = 0.0;}
for(int count = 0; count < 3659; count++) {aJL[count] = 0.0;aJR[count] = 0.0;}
for(int count = 0; count < 1719; count++) {aKL[count] = 0.0;aKR[count] = 0.0;}
for(int count = 0; count < 679; count++) {aLL[count] = 0.0;aLR[count] = 0.0;}
for(int count = 0; count < 9699; count++) {aAL[count] = 0.0;aAR[count] = 0.0;}
for(int count = 0; count < 5999; count++) {aBL[count] = 0.0;aBR[count] = 0.0;}
for(int count = 0; count < 2319; count++) {aCL[count] = 0.0;aCR[count] = 0.0;}
for(int count = 0; count < 939; count++) {aDL[count] = 0.0;aDR[count] = 0.0;}
for(int count = 0; count < 15219; count++) {aEL[count] = 0.0;aER[count] = 0.0;}
for(int count = 0; count < 8459; count++) {aFL[count] = 0.0;aFR[count] = 0.0;}
for(int count = 0; count < 4539; count++) {aGL[count] = 0.0;aGR[count] = 0.0;}
for(int count = 0; count < 3199; count++) {aHL[count] = 0.0;aHR[count] = 0.0;}
for(int count = 0; count < 3110; count++) {aML[count] = aMR[count] = 0.0;}
feedbackAL = 0.0; feedbackAR = 0.0;
feedbackBL = 0.0; feedbackBR = 0.0;
feedbackCL = 0.0; feedbackCR = 0.0;
feedbackDL = 0.0; feedbackDR = 0.0;
for(int count = 0; count < 6; count++) {lastRefL[count] = 0.0;lastRefR[count] = 0.0;}
thunderL = 0; thunderR = 0;
countI = 1;
countJ = 1;
countK = 1;
countL = 1;
countA = 1;
countB = 1;
countC = 1;
countD = 1;
countE = 1;
countF = 1;
countG = 1;
countH = 1;
countM = 1;
//the predelay
cycle = 0;
vibM = 3.0;
oldfpd = 429496.7295;
fpdL = 1.0; while (fpdL < 16386) fpdL = rand()*UINT32_MAX;
fpdR = 1.0; while (fpdR < 16386) fpdR = rand()*UINT32_MAX;
return noErr;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Galactic::ProcessBufferLists
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
OSStatus Galactic::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 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 regen = 0.0625+((1.0-GetParameter( kParam_One ))*0.0625);
double attenuate = (1.0 - (regen / 0.125))*1.333;
double lowpass = pow(1.00001-(1.0-GetParameter( kParam_Two )),2.0)/sqrt(overallscale);
double drift = pow(GetParameter( kParam_Three ),3)*0.001;
double size = (GetParameter( kParam_Four )*1.77)+0.1;
double wet = 1.0-(pow(1.0-GetParameter( kParam_Five ),3));
delayI = 3407.0*size;
delayJ = 1823.0*size;
delayK = 859.0*size;
delayL = 331.0*size;
delayA = 4801.0*size;
delayB = 2909.0*size;
delayC = 1153.0*size;
delayD = 461.0*size;
delayE = 7607.0*size;
delayF = 4217.0*size;
delayG = 2269.0*size;
delayH = 1597.0*size;
delayM = 256;
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 drySampleL = inputSampleL;
double drySampleR = inputSampleR;
vibM += (oldfpd*drift);
if (vibM > (3.141592653589793238*2.0)) {
vibM = 0.0;
oldfpd = 0.4294967295+(fpdL*0.0000000000618);
}
aML[countM] = inputSampleL * attenuate;
aMR[countM] = inputSampleR * attenuate;
countM++; if (countM < 0 || countM > delayM) countM = 0;
double offsetML = (sin(vibM)+1.0)*127;
double offsetMR = (sin(vibM+(3.141592653589793238/2.0))+1.0)*127;
int workingML = countM + offsetML;
int workingMR = countM + offsetMR;
double interpolML = (aML[workingML-((workingML > delayM)?delayM+1:0)] * (1-(offsetML-floor(offsetML))));
interpolML += (aML[workingML+1-((workingML+1 > delayM)?delayM+1:0)] * ((offsetML-floor(offsetML))) );
double interpolMR = (aMR[workingMR-((workingMR > delayM)?delayM+1:0)] * (1-(offsetMR-floor(offsetMR))));
interpolMR += (aMR[workingMR+1-((workingMR+1 > delayM)?delayM+1:0)] * ((offsetMR-floor(offsetMR))) );
inputSampleL = interpolML;
inputSampleR = interpolMR;
//predelay that applies vibrato
//want vibrato speed AND depth like in MatrixVerb
iirAL = (iirAL*(1.0-lowpass))+(inputSampleL*lowpass); inputSampleL = iirAL;
iirAR = (iirAR*(1.0-lowpass))+(inputSampleR*lowpass); inputSampleR = iirAR;
//initial filter
cycle++;
if (cycle == cycleEnd) { //hit the end point and we do a reverb sample
aIL[countI] = inputSampleL + (feedbackAR * regen);
aJL[countJ] = inputSampleL + (feedbackBR * regen);
aKL[countK] = inputSampleL + (feedbackCR * regen);
aLL[countL] = inputSampleL + (feedbackDR * regen);
aIR[countI] = inputSampleR + (feedbackAL * regen);
aJR[countJ] = inputSampleR + (feedbackBL * regen);
aKR[countK] = inputSampleR + (feedbackCL * regen);
aLR[countL] = inputSampleR + (feedbackDL * regen);
countI++; if (countI < 0 || countI > delayI) countI = 0;
countJ++; if (countJ < 0 || countJ > delayJ) countJ = 0;
countK++; if (countK < 0 || countK > delayK) countK = 0;
countL++; if (countL < 0 || countL > delayL) countL = 0;
double outIL = aIL[countI-((countI > delayI)?delayI+1:0)];
double outJL = aJL[countJ-((countJ > delayJ)?delayJ+1:0)];
double outKL = aKL[countK-((countK > delayK)?delayK+1:0)];
double outLL = aLL[countL-((countL > delayL)?delayL+1:0)];
double outIR = aIR[countI-((countI > delayI)?delayI+1:0)];
double outJR = aJR[countJ-((countJ > delayJ)?delayJ+1:0)];
double outKR = aKR[countK-((countK > delayK)?delayK+1:0)];
double outLR = aLR[countL-((countL > delayL)?delayL+1:0)];
//first block: now we have four outputs
aAL[countA] = (outIL - (outJL + outKL + outLL));
aBL[countB] = (outJL - (outIL + outKL + outLL));
aCL[countC] = (outKL - (outIL + outJL + outLL));
aDL[countD] = (outLL - (outIL + outJL + outKL));
aAR[countA] = (outIR - (outJR + outKR + outLR));
aBR[countB] = (outJR - (outIR + outKR + outLR));
aCR[countC] = (outKR - (outIR + outJR + outLR));
aDR[countD] = (outLR - (outIR + outJR + outKR));
countA++; if (countA < 0 || countA > delayA) countA = 0;
countB++; if (countB < 0 || countB > delayB) countB = 0;
countC++; if (countC < 0 || countC > delayC) countC = 0;
countD++; if (countD < 0 || countD > delayD) countD = 0;
double outAL = aAL[countA-((countA > delayA)?delayA+1:0)];
double outBL = aBL[countB-((countB > delayB)?delayB+1:0)];
double outCL = aCL[countC-((countC > delayC)?delayC+1:0)];
double outDL = aDL[countD-((countD > delayD)?delayD+1:0)];
double outAR = aAR[countA-((countA > delayA)?delayA+1:0)];
double outBR = aBR[countB-((countB > delayB)?delayB+1:0)];
double outCR = aCR[countC-((countC > delayC)?delayC+1:0)];
double outDR = aDR[countD-((countD > delayD)?delayD+1:0)];
//second block: four more outputs
aEL[countE] = (outAL - (outBL + outCL + outDL));
aFL[countF] = (outBL - (outAL + outCL + outDL));
aGL[countG] = (outCL - (outAL + outBL + outDL));
aHL[countH] = (outDL - (outAL + outBL + outCL));
aER[countE] = (outAR - (outBR + outCR + outDR));
aFR[countF] = (outBR - (outAR + outCR + outDR));
aGR[countG] = (outCR - (outAR + outBR + outDR));
aHR[countH] = (outDR - (outAR + outBR + outCR));
countE++; if (countE < 0 || countE > delayE) countE = 0;
countF++; if (countF < 0 || countF > delayF) countF = 0;
countG++; if (countG < 0 || countG > delayG) countG = 0;
countH++; if (countH < 0 || countH > delayH) countH = 0;
double outEL = aEL[countE-((countE > delayE)?delayE+1:0)];
double outFL = aFL[countF-((countF > delayF)?delayF+1:0)];
double outGL = aGL[countG-((countG > delayG)?delayG+1:0)];
double outHL = aHL[countH-((countH > delayH)?delayH+1:0)];
double outER = aER[countE-((countE > delayE)?delayE+1:0)];
double outFR = aFR[countF-((countF > delayF)?delayF+1:0)];
double outGR = aGR[countG-((countG > delayG)?delayG+1:0)];
double outHR = aHR[countH-((countH > delayH)?delayH+1:0)];
//third block: final outputs
feedbackAL = (outEL - (outFL + outGL + outHL));
feedbackBL = (outFL - (outEL + outGL + outHL));
feedbackCL = (outGL - (outEL + outFL + outHL));
feedbackDL = (outHL - (outEL + outFL + outGL));
feedbackAR = (outER - (outFR + outGR + outHR));
feedbackBR = (outFR - (outER + outGR + outHR));
feedbackCR = (outGR - (outER + outFR + outHR));
feedbackDR = (outHR - (outER + outFR + outGR));
//which we need to feed back into the input again, a bit
inputSampleL = (outEL + outFL + outGL + outHL)/8.0;
inputSampleR = (outER + outFR + outGR + outHR)/8.0;
//and take the final combined sum of outputs
if (cycleEnd == 4) {
lastRefL[0] = lastRefL[4]; //start from previous last
lastRefL[2] = (lastRefL[0] + inputSampleL)/2; //half
lastRefL[1] = (lastRefL[0] + lastRefL[2])/2; //one quarter
lastRefL[3] = (lastRefL[2] + inputSampleL)/2; //three quarters
lastRefL[4] = inputSampleL; //full
lastRefR[0] = lastRefR[4]; //start from previous last
lastRefR[2] = (lastRefR[0] + inputSampleR)/2; //half
lastRefR[1] = (lastRefR[0] + lastRefR[2])/2; //one quarter
lastRefR[3] = (lastRefR[2] + inputSampleR)/2; //three quarters
lastRefR[4] = inputSampleR; //full
}
if (cycleEnd == 3) {
lastRefL[0] = lastRefL[3]; //start from previous last
lastRefL[2] = (lastRefL[0]+lastRefL[0]+inputSampleL)/3; //third
lastRefL[1] = (lastRefL[0]+inputSampleL+inputSampleL)/3; //two thirds
lastRefL[3] = inputSampleL; //full
lastRefR[0] = lastRefR[3]; //start from previous last
lastRefR[2] = (lastRefR[0]+lastRefR[0]+inputSampleR)/3; //third
lastRefR[1] = (lastRefR[0]+inputSampleR+inputSampleR)/3; //two thirds
lastRefR[3] = inputSampleR; //full
}
if (cycleEnd == 2) {
lastRefL[0] = lastRefL[2]; //start from previous last
lastRefL[1] = (lastRefL[0] + inputSampleL)/2; //half
lastRefL[2] = inputSampleL; //full
lastRefR[0] = lastRefR[2]; //start from previous last
lastRefR[1] = (lastRefR[0] + inputSampleR)/2; //half
lastRefR[2] = inputSampleR; //full
}
if (cycleEnd == 1) {
lastRefL[0] = inputSampleL;
lastRefR[0] = inputSampleR;
}
cycle = 0; //reset
inputSampleL = lastRefL[cycle];
inputSampleR = lastRefR[cycle];
} else {
inputSampleL = lastRefL[cycle];
inputSampleR = lastRefR[cycle];
//we are going through our references now
}
iirBL = (iirBL*(1.0-lowpass))+(inputSampleL*lowpass); inputSampleL = iirBL;
iirBR = (iirBR*(1.0-lowpass))+(inputSampleR*lowpass); inputSampleR = iirBR;
//end filter
if (wet < 1.0) {
inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet));
inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet));
}
//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
*outputL = inputSampleL;
*outputR = inputSampleR;
//direct stereo out
inputL += 1;
inputR += 1;
outputL += 1;
outputR += 1;
}
return noErr;
}
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