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

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/*
* File: YNotch.cpp
*
* Version: 1.0
*
* Created: 5/24/21
*
* 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
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* 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.
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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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*
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* IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY
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*
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*
*/
/*=============================================================================
YNotch.cpp
=============================================================================*/
#include "YNotch.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
AUDIOCOMPONENT_ENTRY(AUBaseFactory, YNotch)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// YNotch::YNotch
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
YNotch::YNotch(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 );
SetParameter(kParam_Six, kDefaultValue_ParamSix );
#if AU_DEBUG_DISPATCHER
mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// YNotch::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult YNotch::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// YNotch::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult YNotch::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;
case kParam_Six:
AUBase::FillInParameterName (outParameterInfo, kParameterSixName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamSix;
break;
default:
result = kAudioUnitErr_InvalidParameter;
break;
}
} else {
result = kAudioUnitErr_InvalidParameter;
}
return result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// YNotch::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult YNotch::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// YNotch::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult YNotch::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// YNotch::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult YNotch::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____YNotchEffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// YNotch::YNotchKernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void YNotch::YNotchKernel::Reset()
{
for (int x = 0; x < biq_total; x++) {biquad[x] = 0.0;}
powFactorA = 1.0; powFactorB = 1.0;
inTrimA = 0.1; inTrimB = 0.1;
outTrimA = 1.0; outTrimB = 1.0;
for (int x = 0; x < fix_total; x++) {fixA[x] = 0.0; fixB[x] = 0.0;}
fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// YNotch::YNotchKernel::Process
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void YNotch::YNotchKernel::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();
inTrimA = inTrimB;
inTrimB = GetParameter( kParam_One )*10.0;
biquad[biq_freq] = pow(GetParameter( kParam_Two ),3)*20000.0;
if (biquad[biq_freq] < 15.0) biquad[biq_freq] = 15.0;
biquad[biq_freq] /= GetSampleRate();
biquad[biq_reso] = (pow(GetParameter( kParam_Three ),2)*15.0)+0.0001;
biquad[biq_aA0] = biquad[biq_aB0];
biquad[biq_aA1] = biquad[biq_aB1];
biquad[biq_aA2] = biquad[biq_aB2];
biquad[biq_bA1] = biquad[biq_bB1];
biquad[biq_bA2] = biquad[biq_bB2];
//previous run through the buffer is still in the filter, so we move it
//to the A section and now it's the new starting point.
double K = tan(M_PI * biquad[biq_freq]);
double norm = 1.0 / (1.0 + K / biquad[biq_reso] + K * K);
biquad[biq_aB0] = (1.0 + K * K) * norm;
biquad[biq_aB1] = 2.0 * (K * K - 1) * norm;
biquad[biq_aB2] = biquad[biq_aB0];
biquad[biq_bB1] = biquad[biq_aB1];
biquad[biq_bB2] = (1.0 - K / biquad[biq_reso] + K * K) * norm;
//for the coefficient-interpolated biquad filter
powFactorA = powFactorB;
powFactorB = pow(GetParameter( kParam_Four )+0.9,4);
//1.0 == target neutral
outTrimA = outTrimB;
outTrimB = GetParameter( kParam_Five );
double wet = GetParameter( kParam_Six );
fixA[fix_freq] = fixB[fix_freq] = 20000.0 / GetSampleRate();
fixA[fix_reso] = fixB[fix_reso] = 0.7071; //butterworth Q
K = tan(M_PI * fixA[fix_freq]);
norm = 1.0 / (1.0 + K / fixA[fix_reso] + K * K);
fixA[fix_a0] = fixB[fix_a0] = K * K * norm;
fixA[fix_a1] = fixB[fix_a1] = 2.0 * fixA[fix_a0];
fixA[fix_a2] = fixB[fix_a2] = fixA[fix_a0];
fixA[fix_b1] = fixB[fix_b1] = 2.0 * (K * K - 1.0) * norm;
fixA[fix_b2] = fixB[fix_b2] = (1.0 - K / fixA[fix_reso] + K * K) * norm;
//for the fixed-position biquad filter
while (nSampleFrames-- > 0) {
double inputSample = *sourceP;
if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17;
double drySample = *sourceP;
double temp = (double)nSampleFrames/inFramesToProcess;
biquad[biq_a0] = (biquad[biq_aA0]*temp)+(biquad[biq_aB0]*(1.0-temp));
biquad[biq_a1] = (biquad[biq_aA1]*temp)+(biquad[biq_aB1]*(1.0-temp));
biquad[biq_a2] = (biquad[biq_aA2]*temp)+(biquad[biq_aB2]*(1.0-temp));
biquad[biq_b1] = (biquad[biq_bA1]*temp)+(biquad[biq_bB1]*(1.0-temp));
biquad[biq_b2] = (biquad[biq_bA2]*temp)+(biquad[biq_bB2]*(1.0-temp));
//this is the interpolation code for the biquad
double powFactor = (powFactorA*temp)+(powFactorB*(1.0-temp));
double inTrim = (inTrimA*temp)+(inTrimB*(1.0-temp));
double outTrim = (outTrimA*temp)+(outTrimB*(1.0-temp));
inputSample *= inTrim;
temp = (inputSample * fixA[fix_a0]) + fixA[fix_sL1];
fixA[fix_sL1] = (inputSample * fixA[fix_a1]) - (temp * fixA[fix_b1]) + fixA[fix_sL2];
fixA[fix_sL2] = (inputSample * fixA[fix_a2]) - (temp * fixA[fix_b2]);
inputSample = temp; //fixed biquad filtering ultrasonics
//encode/decode courtesy of torridgristle under the MIT license
if (inputSample > 1.0) inputSample = 1.0;
else if (inputSample > 0.0) inputSample = 1.0 - pow(1.0-inputSample,powFactor);
if (inputSample < -1.0) inputSample = -1.0;
else if (inputSample < 0.0) inputSample = -1.0 + pow(1.0+inputSample,powFactor);
temp = (inputSample * biquad[biq_a0]) + biquad[biq_sL1];
biquad[biq_sL1] = (inputSample * biquad[biq_a1]) - (temp * biquad[biq_b1]) + biquad[biq_sL2];
biquad[biq_sL2] = (inputSample * biquad[biq_a2]) - (temp * biquad[biq_b2]);
inputSample = temp; //coefficient interpolating biquad filter
//encode/decode courtesy of torridgristle under the MIT license
if (inputSample > 1.0) inputSample = 1.0;
else if (inputSample > 0.0) inputSample = 1.0 - pow(1.0-inputSample,(1.0/powFactor));
if (inputSample < -1.0) inputSample = -1.0;
else if (inputSample < 0.0) inputSample = -1.0 + pow(1.0+inputSample,(1.0/powFactor));
inputSample *= outTrim;
temp = (inputSample * fixB[fix_a0]) + fixB[fix_sL1];
fixB[fix_sL1] = (inputSample * fixB[fix_a1]) - (temp * fixB[fix_b1]) + fixB[fix_sL2];
fixB[fix_sL2] = (inputSample * fixB[fix_a2]) - (temp * fixB[fix_b2]);
inputSample = temp; //fixed biquad filtering ultrasonics
if (wet < 1.0) {
inputSample = (inputSample*wet) + (drySample*(1.0-wet));
}
//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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