mirror of
https://github.com/airwindows/airwindows.git
synced 2026-05-15 14:16:00 -06:00
422 lines
15 KiB
C++
422 lines
15 KiB
C++
/*
|
|
* File: Air2.cpp
|
|
*
|
|
* Version: 1.0
|
|
*
|
|
* Created: 7/5/21
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
/*=============================================================================
|
|
Air2.cpp
|
|
|
|
=============================================================================*/
|
|
#include "Air2.h"
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
COMPONENT_ENTRY(Air2)
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Air2::Air2
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
Air2::Air2(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
|
|
|
|
}
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Air2::GetParameterValueStrings
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult Air2::GetParameterValueStrings(AudioUnitScope inScope,
|
|
AudioUnitParameterID inParameterID,
|
|
CFArrayRef * outStrings)
|
|
{
|
|
|
|
return kAudioUnitErr_InvalidProperty;
|
|
}
|
|
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Air2::GetParameterInfo
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult Air2::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 = -1.0;
|
|
outParameterInfo.maxValue = 1.0;
|
|
outParameterInfo.defaultValue = kDefaultValue_ParamOne;
|
|
break;
|
|
case kParam_Two:
|
|
AUBase::FillInParameterName (outParameterInfo, kParameterTwoName, false);
|
|
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
|
|
outParameterInfo.minValue = -1.0;
|
|
outParameterInfo.maxValue = 1.0;
|
|
outParameterInfo.defaultValue = kDefaultValue_ParamTwo;
|
|
break;
|
|
case kParam_Three:
|
|
AUBase::FillInParameterName (outParameterInfo, kParameterThreeName, false);
|
|
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
|
|
outParameterInfo.minValue = -1.0;
|
|
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;
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Air2::GetPropertyInfo
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult Air2::GetPropertyInfo (AudioUnitPropertyID inID,
|
|
AudioUnitScope inScope,
|
|
AudioUnitElement inElement,
|
|
UInt32 & outDataSize,
|
|
Boolean & outWritable)
|
|
{
|
|
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Air2::GetProperty
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult Air2::GetProperty( AudioUnitPropertyID inID,
|
|
AudioUnitScope inScope,
|
|
AudioUnitElement inElement,
|
|
void * outData )
|
|
{
|
|
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
|
|
}
|
|
|
|
// Air2::Initialize
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult Air2::Initialize()
|
|
{
|
|
ComponentResult result = AUEffectBase::Initialize();
|
|
if (result == noErr)
|
|
Reset(kAudioUnitScope_Global, 0);
|
|
return result;
|
|
}
|
|
|
|
#pragma mark ____Air2EffectKernel
|
|
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Air2::Air2Kernel::Reset()
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
void Air2::Air2Kernel::Reset()
|
|
{
|
|
airPrevA = 0.0;
|
|
airEvenA = 0.0;
|
|
airOddA = 0.0;
|
|
airFactorA = 0.0;
|
|
flipA = false;
|
|
airPrevB = 0.0;
|
|
airEvenB = 0.0;
|
|
airOddB = 0.0;
|
|
airFactorB = 0.0;
|
|
flipB = false;
|
|
airPrevC = 0.0;
|
|
airEvenC = 0.0;
|
|
airOddC = 0.0;
|
|
airFactorC = 0.0;
|
|
flop = false;
|
|
tripletPrev = 0.0;
|
|
tripletMid = 0.0;
|
|
tripletA = 0.0;
|
|
tripletB = 0.0;
|
|
tripletC = 0.0;
|
|
tripletFactor = 0.0;
|
|
count = 1;
|
|
postsine = sin(1.0);
|
|
|
|
for(int c = 0; c < 9; c++) {lastRef[c] = 0.0;}
|
|
cycle = 0;
|
|
|
|
fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX;
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Air2::Air2Kernel::Process
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
void Air2::Air2Kernel::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();
|
|
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
|
|
|
|
Float64 hiIntensity = GetParameter( kParam_One );
|
|
Float64 tripletIntensity = GetParameter( kParam_Two );
|
|
Float64 airIntensity = GetParameter( kParam_Three );
|
|
if (hiIntensity < 0.0) hiIntensity *= 0.57525;
|
|
if (tripletIntensity < 0.0) tripletIntensity *= 0.71325;
|
|
if (airIntensity < 0.0) airIntensity *= 0.5712;
|
|
hiIntensity = -pow(hiIntensity,3);
|
|
tripletIntensity = -pow(tripletIntensity,3);
|
|
airIntensity = -pow(airIntensity,3);
|
|
Float64 hiQ = 1.5+fabs(hiIntensity*0.5);
|
|
Float64 tripletQ = 1.5+fabs(tripletIntensity*0.5);
|
|
Float64 airQ = 1.5+fabs(airIntensity*0.5);
|
|
Float64 intensity = (pow(GetParameter( kParam_Four ),3)*4.0) + 0.0001;
|
|
Float64 mix = GetParameter( kParam_Five );
|
|
Float64 drymix = (1.0-mix)*4.0;
|
|
if (drymix > 1.0) drymix = 1.0;
|
|
|
|
//all types of air band are running in parallel, not series
|
|
|
|
while (nSampleFrames-- > 0) {
|
|
double inputSample = *sourceP;
|
|
if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17;
|
|
double drySample = inputSample;
|
|
|
|
cycle++;
|
|
if (cycle == cycleEnd) { //hit the end point and we do an Air sample
|
|
double correction = 0.0;
|
|
if (fabs(hiIntensity) > 0.0001) {
|
|
airFactorC = airPrevC - inputSample;
|
|
if (flop)
|
|
{
|
|
airEvenC += airFactorC; airOddC -= airFactorC;
|
|
airFactorC = airEvenC * hiIntensity;
|
|
}
|
|
else
|
|
{
|
|
airOddC += airFactorC; airEvenC -= airFactorC;
|
|
airFactorC = airOddC * hiIntensity;
|
|
}
|
|
airOddC = (airOddC - ((airOddC - airEvenC)/256.0)) / hiQ;
|
|
airEvenC = (airEvenC - ((airEvenC - airOddC)/256.0)) / hiQ;
|
|
airPrevC = inputSample;
|
|
correction = correction + airFactorC;
|
|
flop = !flop;
|
|
}//22k
|
|
|
|
if (fabs(tripletIntensity) > 0.0001) {
|
|
tripletFactor = tripletPrev - inputSample;
|
|
if (count < 1 || count > 3) count = 1;
|
|
switch (count)
|
|
{
|
|
case 1:
|
|
tripletA += tripletFactor; tripletC -= tripletFactor;
|
|
tripletFactor = tripletA * tripletIntensity;
|
|
tripletPrev = tripletMid; tripletMid = inputSample;
|
|
break;
|
|
case 2:
|
|
tripletB += tripletFactor; tripletA -= tripletFactor;
|
|
tripletFactor = tripletB * tripletIntensity;
|
|
tripletPrev = tripletMid; tripletMid = inputSample;
|
|
break;
|
|
case 3:
|
|
tripletC += tripletFactor; tripletB -= tripletFactor;
|
|
tripletFactor = tripletC * tripletIntensity;
|
|
tripletPrev = tripletMid; tripletMid = inputSample;
|
|
break;
|
|
}
|
|
tripletA /= tripletQ; tripletB /= tripletQ; tripletC /= tripletQ;
|
|
correction = correction + tripletFactor;
|
|
count++;
|
|
}//15K
|
|
|
|
if (fabs(airIntensity) > 0.0001) {
|
|
if (flop)
|
|
{
|
|
airFactorA = airPrevA - inputSample;
|
|
if (flipA)
|
|
{
|
|
airEvenA += airFactorA; airOddA -= airFactorA;
|
|
airFactorA = airEvenA * airIntensity;
|
|
}
|
|
else
|
|
{
|
|
airOddA += airFactorA; airEvenA -= airFactorA;
|
|
airFactorA = airOddA * airIntensity;
|
|
}
|
|
airOddA = (airOddA - ((airOddA - airEvenA)/256.0)) / airQ;
|
|
airEvenA = (airEvenA - ((airEvenA - airOddA)/256.0)) / airQ;
|
|
airPrevA = inputSample;
|
|
correction = correction + airFactorA;
|
|
flipA = !flipA;
|
|
}
|
|
else
|
|
{
|
|
airFactorB = airPrevB - inputSample;
|
|
if (flipB)
|
|
{
|
|
airEvenB += airFactorB; airOddB -= airFactorB;
|
|
airFactorB = airEvenB * airIntensity;
|
|
}
|
|
else
|
|
{
|
|
airOddB += airFactorB; airEvenB -= airFactorB;
|
|
airFactorB = airOddB * airIntensity;
|
|
}
|
|
airOddB = (airOddB - ((airOddB - airEvenB)/256.0)) / airQ;
|
|
airEvenB = (airEvenB - ((airEvenB - airOddB)/256.0)) / airQ;
|
|
airPrevB = inputSample;
|
|
correction = correction + airFactorB;
|
|
flipB = !flipB;
|
|
}
|
|
}//11k
|
|
|
|
correction *= intensity;
|
|
correction -= 1.0;
|
|
double bridgerectifier = fabs(correction);
|
|
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
|
|
bridgerectifier = sin(bridgerectifier);
|
|
if (correction > 0) correction = bridgerectifier;
|
|
else correction = -bridgerectifier;
|
|
correction += postsine;
|
|
correction /= intensity;
|
|
inputSample = correction * 4.0 * mix;
|
|
|
|
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
|
|
}
|
|
|
|
if (drymix < 1.0) drySample *= drymix;
|
|
inputSample += drySample;
|
|
|
|
//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;
|
|
}
|
|
}
|
|
|