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airwindows/plugins/MacAU/Distance2/Distance2.cpp
Christopher Johnson 04dc83d844 Cleaning up unnecessary variables
2022-02-26 16:24:05 -05:00

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/*
* File: Distance2.cpp
*
* Version: 1.0
*
* Created: 5/10/18
*
* Copyright: Copyright © 2018 Airwindows, All Rights Reserved
*
* 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
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* notice and the following text and disclaimers in all such redistributions of the Apple Software.
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* 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
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* 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
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* UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN
* IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*=============================================================================
Distance2.cpp
=============================================================================*/
#include "Distance2.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
COMPONENT_ENTRY(Distance2)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Distance2::Distance2
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Distance2::Distance2(AudioUnit component)
: AUEffectBase(component)
{
CreateElements();
Globals()->UseIndexedParameters(kNumberOfParameters);
SetParameter(kParam_One, kDefaultValue_ParamOne );
SetParameter(kParam_Two, kDefaultValue_ParamTwo );
SetParameter(kParam_Three, kDefaultValue_ParamThree );
#if AU_DEBUG_DISPATCHER
mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Distance2::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Distance2::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Distance2::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Distance2::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;
default:
result = kAudioUnitErr_InvalidParameter;
break;
}
} else {
result = kAudioUnitErr_InvalidParameter;
}
return result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Distance2::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Distance2::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Distance2::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Distance2::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// Distance2::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Distance2::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____Distance2EffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Distance2::Distance2Kernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void Distance2::Distance2Kernel::Reset()
{
thirdSample = lastSample = 0.0;
fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX;
lastSampleA = 0.0;
lastSampleB = 0.0;
lastSampleC = 0.0;
lastSampleD = 0.0;
lastSampleE = 0.0;
lastSampleF = 0.0;
lastSampleG = 0.0;
lastSampleH = 0.0;
lastSampleI = 0.0;
lastSampleJ = 0.0;
lastSampleK = 0.0;
lastSampleL = 0.0;
lastSampleM = 0.0;
thresholdA = 0.618033988749894;
thresholdB = 0.679837387624884;
thresholdC = 0.747821126387373;
thresholdD = 0.82260323902611;
thresholdE = 0.904863562928721;
thresholdF = 0.995349919221593;
thresholdG = 1.094884911143752;
thresholdH = 1.204373402258128;
thresholdI = 1.32481074248394;
thresholdJ = 1.457291816732335;
thresholdK = 1.603020998405568;
thresholdL = 1.763323098246125;
thresholdM = 1.939655408070737;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Distance2::Distance2Kernel::Process
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void Distance2::Distance2Kernel::Process( const Float32 *inSourceP,
Float32 *inDestP,
UInt32 inFramesToProcess,
UInt32 inNumChannels,
bool &ioSilence )
{
UInt32 nSampleFrames = inFramesToProcess;
const Float32 *sourceP = inSourceP;
Float32 *destP = inDestP;
Float64 overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= GetSampleRate();
thresholdA = 0.618033988749894 / overallscale;
thresholdB = 0.679837387624884 / overallscale;
thresholdC = 0.747821126387373 / overallscale;
thresholdD = 0.82260323902611 / overallscale;
thresholdE = 0.904863562928721 / overallscale;
thresholdF = 0.995349919221593 / overallscale;
thresholdG = 1.094884911143752 / overallscale;
thresholdH = 1.204373402258128 / overallscale;
thresholdI = 1.32481074248394 / overallscale;
thresholdJ = 1.457291816732335 / overallscale;
thresholdK = 1.603020998405568 / overallscale;
thresholdL = 1.763323098246125 / overallscale;
thresholdM = 1.939655408070737 / overallscale;
Float64 softslew = (pow(GetParameter( kParam_One ),3)*24)+.6;
softslew *= overallscale;
Float64 filter = softslew * GetParameter( kParam_Two );
Float64 secondfilter = filter / 3.0;
Float64 thirdfilter = filter / 5.0;
Float64 offsetScale = GetParameter( kParam_One ) * 0.1618;
Float64 levelcorrect = 1.0 + ((filter / 12.0) * GetParameter( kParam_One ));
//bring in top slider again to manage boost level for lower settings
Float64 wet = GetParameter( kParam_Three );
//this also functions as a pad for the intensely distorty deep distance mode
Float64 dry = 1.0-wet;
while (nSampleFrames-- > 0) {
double inputSample = *sourceP;
if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17;
double drySample = inputSample;
double offset = offsetScale - (lastSample - inputSample);
inputSample += (offset*offsetScale); //extra bit from Loud: offset air compression
inputSample *= wet; //clean up w. dry introduced
inputSample *= softslew; //scale into Atmosphere algorithm
double clamp = inputSample - lastSampleA;
if (clamp > thresholdA) inputSample = lastSampleA + thresholdA;
if (-clamp > thresholdA) inputSample = lastSampleA - thresholdA;
clamp = inputSample - lastSampleB;
if (clamp > thresholdB) inputSample = lastSampleB + thresholdB;
if (-clamp > thresholdB) inputSample = lastSampleB - thresholdB;
clamp = inputSample - lastSampleC;
if (clamp > thresholdC) inputSample = lastSampleC + thresholdC;
if (-clamp > thresholdC) inputSample = lastSampleC - thresholdC;
clamp = inputSample - lastSampleD;
if (clamp > thresholdD) inputSample = lastSampleD + thresholdD;
if (-clamp > thresholdD) inputSample = lastSampleD - thresholdD;
clamp = inputSample - lastSampleE;
if (clamp > thresholdE) inputSample = lastSampleE + thresholdE;
if (-clamp > thresholdE) inputSample = lastSampleE - thresholdE;
clamp = inputSample - lastSampleF;
if (clamp > thresholdF) inputSample = lastSampleF + thresholdF;
if (-clamp > thresholdF) inputSample = lastSampleF - thresholdF;
clamp = inputSample - lastSampleG;
if (clamp > thresholdG) inputSample = lastSampleG + thresholdG;
if (-clamp > thresholdG) inputSample = lastSampleG - thresholdG;
clamp = inputSample - lastSampleH;
if (clamp > thresholdH) inputSample = lastSampleH + thresholdH;
if (-clamp > thresholdH) inputSample = lastSampleH - thresholdH;
clamp = inputSample - lastSampleI;
if (clamp > thresholdI) inputSample = lastSampleI + thresholdI;
if (-clamp > thresholdI) inputSample = lastSampleI - thresholdI;
clamp = inputSample - lastSampleJ;
if (clamp > thresholdJ) inputSample = lastSampleJ + thresholdJ;
if (-clamp > thresholdJ) inputSample = lastSampleJ - thresholdJ;
clamp = inputSample - lastSampleK;
if (clamp > thresholdK) inputSample = lastSampleK + thresholdK;
if (-clamp > thresholdK) inputSample = lastSampleK - thresholdK;
clamp = inputSample - lastSampleL;
if (clamp > thresholdL) inputSample = lastSampleL + thresholdL;
if (-clamp > thresholdL) inputSample = lastSampleL - thresholdL;
clamp = inputSample - lastSampleM;
if (clamp > thresholdM) inputSample = lastSampleM + thresholdM;
if (-clamp > thresholdM) inputSample = lastSampleM - thresholdM;
lastSampleM = lastSampleL;
lastSampleL = lastSampleK;
lastSampleK = lastSampleJ;
lastSampleJ = lastSampleI;
lastSampleI = lastSampleH;
lastSampleH = lastSampleG;
lastSampleG = lastSampleF;
lastSampleF = lastSampleE;
lastSampleE = lastSampleD;
lastSampleD = lastSampleC;
lastSampleC = lastSampleB;
lastSampleB = lastSampleA;
lastSampleA = drySample;
//store the raw input sample again for use next time
inputSample *= levelcorrect;
inputSample /= softslew;
inputSample -= (offset*offsetScale);
//begin IIR stage
inputSample += (thirdSample * thirdfilter);
inputSample /= (thirdfilter + 1.0);
inputSample += (lastSample * secondfilter);
inputSample /= (secondfilter + 1.0);
//do an IIR like thing to further squish superdistant stuff
thirdSample = lastSample;
lastSample = inputSample;
inputSample *= levelcorrect;
if (wet !=1.0) {
inputSample = (inputSample * wet) + (drySample * (1.0-wet));
}
//Dry/Wet control, defaults to the last slider
//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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