/* * File: Pop2.cpp * * Version: 1.0 * * Created: 9/19/22 * * Copyright: Copyright © 2022 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. 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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. * */ /*============================================================================= Pop2.cpp =============================================================================*/ #include "Pop2.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ COMPONENT_ENTRY(Pop2) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Pop2::Pop2 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Pop2::Pop2(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 } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Pop2::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Pop2::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Pop2::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Pop2::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; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Pop2::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Pop2::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Pop2::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Pop2::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // Pop2::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Pop2::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____Pop2EffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Pop2::Pop2Kernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Pop2::Pop2Kernel::Reset() { muVary = 0.0; muAttack = 0.0; muNewSpeed = 1000.0; muSpeedA = 1000.0; muSpeedB = 1000.0; muCoefficientA = 1.0; muCoefficientB = 1.0; flip = false; lastSample = 0.0; wasPosClip = false; wasNegClip = false; for (int x = 0; x < 16; x++) intermediate[x] = 0.0; fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Pop2::Pop2Kernel::Process //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Pop2::Pop2Kernel::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 spacing = floor(overallscale); //should give us working basic scaling, usually 2 or 4 if (spacing < 1) spacing = 1; if (spacing > 16) spacing = 16; //for ClipOnly2 Float64 threshold = 1.0 - ((1.0-pow(1.0-GetParameter( kParam_One ),2))*0.9); Float64 attack = ((pow(GetParameter( kParam_Two ),4)*100000.0)+10.0)*overallscale; Float64 release = ((pow(GetParameter( kParam_Three ),5)*2000000.0)+20.0)*overallscale; Float64 maxRelease = release * 4.0; Float64 muPreGain = 1.0/threshold; Float64 muMakeupGain = sqrt(1.0 / threshold)*GetParameter( kParam_Four ); Float64 wet = GetParameter( kParam_Five ); //compressor section while (nSampleFrames-- > 0) { double inputSample = *sourceP; if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17; double drySample = inputSample; //begin compressor section inputSample *= muPreGain; if (flip) { if (fabs(inputSample) > threshold) { muVary = threshold / fabs(inputSample); muAttack = sqrt(fabs(muSpeedA)); muCoefficientA = muCoefficientA * (muAttack-1.0); if (muVary < threshold) muCoefficientA = muCoefficientA + threshold; else muCoefficientA = muCoefficientA + muVary; muCoefficientA = muCoefficientA / muAttack; muNewSpeed = muSpeedA * (muSpeedA-1.0); muNewSpeed = muNewSpeed + release; muSpeedA = muNewSpeed / muSpeedA; if (muSpeedA > maxRelease) muSpeedA = maxRelease; } else { muCoefficientA = muCoefficientA * ((muSpeedA * muSpeedA)-1.0); muCoefficientA = muCoefficientA + 1.0; muCoefficientA = muCoefficientA / (muSpeedA * muSpeedA); muNewSpeed = muSpeedA * (muSpeedA-1.0); muNewSpeed = muNewSpeed + attack; muSpeedA = muNewSpeed / muSpeedA;} } else { if (fabs(inputSample) > threshold) { muVary = threshold / fabs(inputSample); muAttack = sqrt(fabs(muSpeedB)); muCoefficientB = muCoefficientB * (muAttack-1.0); if (muVary < threshold) muCoefficientB = muCoefficientB + threshold; else muCoefficientB = muCoefficientB + muVary; muCoefficientB = muCoefficientB / muAttack; muNewSpeed = muSpeedB * (muSpeedB-1.0); muNewSpeed = muNewSpeed + release; muSpeedB = muNewSpeed / muSpeedB; if (muSpeedB > maxRelease) muSpeedB = maxRelease; } else { muCoefficientB = muCoefficientB * ((muSpeedB * muSpeedB)-1.0); muCoefficientB = muCoefficientB + 1.0; muCoefficientB = muCoefficientB / (muSpeedB * muSpeedB); muNewSpeed = muSpeedB * (muSpeedB-1.0); muNewSpeed = muNewSpeed + attack; muSpeedB = muNewSpeed / muSpeedB;} } //got coefficients, adjusted speeds if (flip) inputSample *= pow(muCoefficientA,2); else inputSample *= pow(muCoefficientB,2); inputSample *= muMakeupGain; flip = !flip; //end compressor section //begin ClipOnly2 as a little, compressed chunk that can be dropped into code if (inputSample > 4.0) inputSample = 4.0; if (inputSample < -4.0) inputSample = -4.0; if (wasPosClip == true) { //current will be over if (inputSample0.9549925859) {wasPosClip=true;inputSample=0.7058208+(lastSample*0.2609148);} if (wasNegClip == true) { //current will be -over if (inputSample > lastSample) lastSample=-0.7058208+(inputSample*0.2609148); else lastSample=-0.2491717+(lastSample*0.7390851); } wasNegClip = false; if (inputSample<-0.9549925859) {wasNegClip=true;inputSample=-0.7058208+(lastSample*0.2609148);} intermediate[spacing] = inputSample; inputSample = lastSample; //Latency is however many samples equals one 44.1k sample for (int x = spacing; x > 0; x--) intermediate[x-1] = intermediate[x]; lastSample = intermediate[0]; //run a little buffer to handle this //end ClipOnly2 as a little, compressed chunk that can be dropped into code 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; } }