/* * File: Infinity2.cpp * * Version: 1.0 * * Created: 4/26/21 * * 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. 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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. * */ /*============================================================================= Infinity2.cpp =============================================================================*/ #include "Infinity2.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ COMPONENT_ENTRY(Infinity2) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Infinity2::Infinity2 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Infinity2::Infinity2(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 } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Infinity2::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Infinity2::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Infinity2::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Infinity2::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; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Infinity2::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Infinity2::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Infinity2::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Infinity2::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // Infinity2::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Infinity2::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____Infinity2EffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Infinity2::Infinity2Kernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Infinity2::Infinity2Kernel::Reset() { for (int x = 0; x < 11; x++) {biquadA[x] = 0.0;biquadB[x] = 0.0;biquadC[x] = 0.0;} feedbackA = 0.0; feedbackB = 0.0; feedbackC = 0.0; feedbackD = 0.0; feedbackE = 0.0; feedbackF = 0.0; feedbackG = 0.0; feedbackH = 0.0; int count; for(count = 0; count < 8110; count++) {aA[count] = 0.0;} for(count = 0; count < 7510; count++) {aB[count] = 0.0;} for(count = 0; count < 7310; count++) {aC[count] = 0.0;} for(count = 0; count < 6910; count++) {aD[count] = 0.0;} for(count = 0; count < 6310; count++) {aE[count] = 0.0;} for(count = 0; count < 6110; count++) {aF[count] = 0.0;} for(count = 0; count < 5510; count++) {aG[count] = 0.0;} for(count = 0; count < 4910; count++) {aH[count] = 0.0;} //maximum value needed will be delay * 100, plus 206 (absolute max vibrato depth) for(count = 0; count < 4510; count++) {aI[count] = 0.0;} for(count = 0; count < 4310; count++) {aJ[count] = 0.0;} for(count = 0; count < 3910; count++) {aK[count] = 0.0;} for(count = 0; count < 3310; count++) {aL[count] = 0.0;} countA = 1; delayA = 79; countB = 1; delayB = 73; countC = 1; delayC = 71; countD = 1; delayD = 67; countE = 1; delayE = 61; countF = 1; delayF = 59; countG = 1; delayG = 53; countH = 1; delayH = 47; //the householder matrices countI = 1; delayI = 43; countJ = 1; delayJ = 41; countK = 1; delayK = 37; countL = 1; delayL = 31; //the allpasses fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Infinity2::Infinity2Kernel::Process //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Infinity2::Infinity2Kernel::Process( const Float32 *inSourceP, Float32 *inDestP, UInt32 inFramesToProcess, UInt32 inNumChannels, bool &ioSilence ) { UInt32 nSampleFrames = inFramesToProcess; const Float32 *sourceP = inSourceP; Float32 *destP = inDestP; biquadC[0] = biquadB[0] = biquadA[0] = ((pow(GetParameter( kParam_One ),2)*9900.0)+100.0) / GetSampleRate(); biquadA[1] = 0.618033988749894848204586; biquadB[1] = (GetParameter( kParam_One )*0.5)+0.118033988749894848204586; biquadC[1] = 0.5; double K = tan(M_PI * biquadA[0]); //lowpass double norm = 1.0 / (1.0 + K / biquadA[1] + K * K); biquadA[2] = K * K * norm; biquadA[3] = 2.0 * biquadA[2]; biquadA[4] = biquadA[2]; biquadA[5] = 2.0 * (K * K - 1.0) * norm; biquadA[6] = (1.0 - K / biquadA[1] + K * K) * norm; K = tan(M_PI * biquadA[0]); norm = 1.0 / (1.0 + K / biquadB[1] + K * K); biquadB[2] = K * K * norm; biquadB[3] = 2.0 * biquadB[2]; biquadB[4] = biquadB[2]; biquadB[5] = 2.0 * (K * K - 1.0) * norm; biquadB[6] = (1.0 - K / biquadB[1] + K * K) * norm; K = tan(M_PI * biquadC[0]); norm = 1.0 / (1.0 + K / biquadC[1] + K * K); biquadC[2] = K * K * norm; biquadC[3] = 2.0 * biquadC[2]; biquadC[4] = biquadC[2]; biquadC[5] = 2.0 * (K * K - 1.0) * norm; biquadC[6] = (1.0 - K / biquadC[1] + K * K) * norm; Float64 size = (pow(GetParameter( kParam_Two ),2)*99.0)+1.0; Float64 damping = pow(GetParameter( kParam_Three ),2)*0.5; Float64 rawPass = GetParameter( kParam_Four ); Float64 feedback = 1.0-(pow(1.0-GetParameter( kParam_Five ),4)); Float64 wet = GetParameter( kParam_Six ); delayA = 79*size; delayB = 73*size; delayC = 71*size; delayD = 67*size; delayE = 61*size; delayF = 59*size; delayG = 53*size; delayH = 47*size; delayI = 43*size; delayJ = 41*size; delayK = 37*size; delayL = 31*size; while (nSampleFrames-- > 0) { double inputSample = *sourceP; if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17; double drySample = inputSample; double tempSample = biquadA[2]*inputSample+biquadA[3]*biquadA[7]+biquadA[4]*biquadA[8]-biquadA[5]*biquadA[9]-biquadA[6]*biquadA[10]; biquadA[8] = biquadA[7]; biquadA[7] = inputSample; inputSample = tempSample; biquadA[10] = biquadA[9]; biquadA[9] = inputSample; //DF1 double allpassI = inputSample; double allpassJ = inputSample; double allpassK = inputSample; double allpassL = inputSample; int allpasstemp = countI + 1; if (allpasstemp < 0 || allpasstemp > delayI) {allpasstemp = 0;} allpassI -= aI[allpasstemp]*0.5; aI[countI] = allpassI; allpassI *= 0.5; countI++; if (countI < 0 || countI > delayI) {countI = 0;} allpassI += (aI[countI]); allpasstemp = countJ + 1; if (allpasstemp < 0 || allpasstemp > delayJ) {allpasstemp = 0;} allpassJ -= aJ[allpasstemp]*0.5; aJ[countJ] = allpassJ; allpassJ *= 0.5; countJ++; if (countJ < 0 || countJ > delayJ) {countJ = 0;} allpassJ += (aJ[countJ]); allpasstemp = countK + 1; if (allpasstemp < 0 || allpasstemp > delayK) {allpasstemp = 0;} allpassK -= aK[allpasstemp]*0.5; aK[countK] = allpassK; allpassK *= 0.5; countK++; if (countK < 0 || countK > delayK) {countK = 0;} allpassK += (aK[countK]); allpasstemp = countL + 1; if (allpasstemp < 0 || allpasstemp > delayL) {allpasstemp = 0;} allpassL -= aL[allpasstemp]*0.5; aL[countL] = allpassL; allpassL *= 0.5; countL++; if (countL < 0 || countL > delayL) {countL = 0;} allpassL += (aL[countL]); //the big allpass in front of everything if (rawPass !=1.0) { allpassI = (allpassI * rawPass) + (drySample * (1.0-rawPass)); allpassJ = (allpassJ * rawPass) + (drySample * (1.0-rawPass)); allpassK = (allpassK * rawPass) + (drySample * (1.0-rawPass)); allpassL = (allpassL * rawPass) + (drySample * (1.0-rawPass)); } aA[countA] = allpassI + (feedbackA*feedback); aB[countB] = allpassJ + (feedbackB*feedback); aC[countC] = allpassK + (feedbackC*feedback); aD[countD] = allpassL + (feedbackD*feedback); aE[countE] = allpassI + (feedbackE*feedback); aF[countF] = allpassJ + (feedbackF*feedback); aG[countG] = allpassK + (feedbackG*feedback); aH[countH] = allpassL + (feedbackH*feedback); 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;} 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;} //the Householder matrices Float64 infiniteA = (aA[countA-((countA > delayA)?delayA+1:0)] * (1-(damping-floor(damping))) ); infiniteA += (aA[countA+1-((countA+1 > delayA)?delayA+1:0)] * ((damping-floor(damping))) ); Float64 infiniteB = (aB[countB-((countB > delayB)?delayB+1:0)] * (1-(damping-floor(damping))) ); infiniteB += (aB[countB+1-((countB+1 > delayB)?delayB+1:0)] * ((damping-floor(damping))) ); Float64 infiniteC = (aC[countC-((countC > delayC)?delayC+1:0)] * (1-(damping-floor(damping))) ); infiniteC += (aC[countC+1-((countC+1 > delayC)?delayC+1:0)] * ((damping-floor(damping))) ); Float64 infiniteD = (aD[countD-((countD > delayD)?delayD+1:0)] * (1-(damping-floor(damping))) ); infiniteD += (aD[countD+1-((countD+1 > delayD)?delayD+1:0)] * ((damping-floor(damping))) ); Float64 infiniteE = (aE[countE-((countE > delayE)?delayE+1:0)] * (1-(damping-floor(damping))) ); infiniteE += (aE[countE+1-((countE+1 > delayE)?delayE+1:0)] * ((damping-floor(damping))) ); Float64 infiniteF = (aF[countF-((countF > delayF)?delayF+1:0)] * (1-(damping-floor(damping))) ); infiniteF += (aF[countF+1-((countF+1 > delayF)?delayF+1:0)] * ((damping-floor(damping))) ); Float64 infiniteG = (aG[countG-((countG > delayG)?delayG+1:0)] * (1-(damping-floor(damping))) ); infiniteG += (aG[countG+1-((countG+1 > delayG)?delayG+1:0)] * ((damping-floor(damping))) ); Float64 infiniteH = (aH[countH-((countH > delayH)?delayH+1:0)] * (1-(damping-floor(damping))) ); infiniteH += (aH[countH+1-((countH+1 > delayH)?delayH+1:0)] * ((damping-floor(damping))) ); Float64 dialBackA = 0.5; Float64 dialBackE = 0.5; Float64 dialBackDry = 0.5; if (fabs(infiniteA)>0.4) dialBackA -= ((fabs(infiniteA)-0.4)*0.2); if (fabs(infiniteE)>0.4) dialBackE -= ((fabs(infiniteE)-0.4)*0.2); if (fabs(drySample)>0.4) dialBackDry -= ((fabs(drySample)-0.4)*0.2); //we're compressing things subtly so we can feed energy in and not overload feedbackA = (infiniteA - (infiniteB + infiniteC + infiniteD))*dialBackA; feedbackB = (infiniteB - (infiniteA + infiniteC + infiniteD))*dialBackDry; feedbackC = (infiniteC - (infiniteA + infiniteB + infiniteD))*dialBackDry; feedbackD = (infiniteD - (infiniteA + infiniteB + infiniteC))*dialBackDry; feedbackE = (infiniteE - (infiniteF + infiniteG + infiniteH))*dialBackE; feedbackF = (infiniteF - (infiniteE + infiniteG + infiniteH))*dialBackDry; feedbackG = (infiniteG - (infiniteE + infiniteF + infiniteH))*dialBackDry; feedbackH = (infiniteH - (infiniteE + infiniteF + infiniteG))*dialBackDry; inputSample = (infiniteA + infiniteB + infiniteC + infiniteD + infiniteE + infiniteF + infiniteG + infiniteH)/8.0; tempSample = biquadB[2]*inputSample+biquadB[3]*biquadB[7]+biquadB[4]*biquadB[8]-biquadB[5]*biquadB[9]-biquadB[6]*biquadB[10]; biquadB[8] = biquadB[7]; biquadB[7] = inputSample; inputSample = tempSample; biquadB[10] = biquadB[9]; biquadB[9] = inputSample; //DF1 if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; //without this, you can get a NaN condition where it spits out DC offset at full blast! inputSample = asin(inputSample); tempSample = biquadC[2]*inputSample+biquadC[3]*biquadC[7]+biquadC[4]*biquadC[8]-biquadC[5]*biquadC[9]-biquadC[6]*biquadC[10]; biquadC[8] = biquadC[7]; biquadC[7] = inputSample; inputSample = tempSample; biquadC[10] = biquadC[9]; biquadC[9] = inputSample; //DF1 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; } }