/* * File: Galactic.cpp * * Version: 1.0 * * Created: 3/20/21 * * 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. * */ /*============================================================================= Galactic.cpp =============================================================================*/ #include "Galactic.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ AUDIOCOMPONENT_ENTRY(AUBaseFactory, Galactic) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Galactic::Galactic //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Galactic::Galactic(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 } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Galactic::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Galactic::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Galactic::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Galactic::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; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Galactic::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Galactic::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // state that plugin supports only stereo-in/stereo-out processing UInt32 Galactic::SupportedNumChannels(const AUChannelInfo ** outInfo) { if (outInfo != NULL) { static AUChannelInfo info; info.inChannels = 2; info.outChannels = 2; *outInfo = &info; } return 1; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Galactic::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Galactic::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // Galactic::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Galactic::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____GalacticEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Galactic::GalacticKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Galactic::Reset(AudioUnitScope inScope, AudioUnitElement inElement) { iirAL = 0.0; iirAR = 0.0; iirBL = 0.0; iirBR = 0.0; for(int count = 0; count < 6479; count++) {aIL[count] = 0.0;aIR[count] = 0.0;} for(int count = 0; count < 3659; count++) {aJL[count] = 0.0;aJR[count] = 0.0;} for(int count = 0; count < 1719; count++) {aKL[count] = 0.0;aKR[count] = 0.0;} for(int count = 0; count < 679; count++) {aLL[count] = 0.0;aLR[count] = 0.0;} for(int count = 0; count < 9699; count++) {aAL[count] = 0.0;aAR[count] = 0.0;} for(int count = 0; count < 5999; count++) {aBL[count] = 0.0;aBR[count] = 0.0;} for(int count = 0; count < 2319; count++) {aCL[count] = 0.0;aCR[count] = 0.0;} for(int count = 0; count < 939; count++) {aDL[count] = 0.0;aDR[count] = 0.0;} for(int count = 0; count < 15219; count++) {aEL[count] = 0.0;aER[count] = 0.0;} for(int count = 0; count < 8459; count++) {aFL[count] = 0.0;aFR[count] = 0.0;} for(int count = 0; count < 4539; count++) {aGL[count] = 0.0;aGR[count] = 0.0;} for(int count = 0; count < 3199; count++) {aHL[count] = 0.0;aHR[count] = 0.0;} for(int count = 0; count < 3110; count++) {aML[count] = aMR[count] = 0.0;} feedbackAL = 0.0; feedbackAR = 0.0; feedbackBL = 0.0; feedbackBR = 0.0; feedbackCL = 0.0; feedbackCR = 0.0; feedbackDL = 0.0; feedbackDR = 0.0; for(int count = 0; count < 6; count++) {lastRefL[count] = 0.0;lastRefR[count] = 0.0;} thunderL = 0; thunderR = 0; countI = 1; countJ = 1; countK = 1; countL = 1; countA = 1; countB = 1; countC = 1; countD = 1; countE = 1; countF = 1; countG = 1; countH = 1; countM = 1; //the predelay cycle = 0; vibM = 3.0; oldfpd = 429496.7295; fpdL = 1.0; while (fpdL < 16386) fpdL = rand()*UINT32_MAX; fpdR = 1.0; while (fpdR < 16386) fpdR = rand()*UINT32_MAX; return noErr; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Galactic::ProcessBufferLists //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ OSStatus Galactic::ProcessBufferLists(AudioUnitRenderActionFlags & ioActionFlags, const AudioBufferList & inBuffer, AudioBufferList & outBuffer, UInt32 inFramesToProcess) { Float32 * inputL = (Float32*)(inBuffer.mBuffers[0].mData); Float32 * inputR = (Float32*)(inBuffer.mBuffers[1].mData); Float32 * outputL = (Float32*)(outBuffer.mBuffers[0].mData); Float32 * outputR = (Float32*)(outBuffer.mBuffers[1].mData); UInt32 nSampleFrames = inFramesToProcess; 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 double regen = 0.0625+((1.0-GetParameter( kParam_One ))*0.0625); double attenuate = (1.0 - (regen / 0.125))*1.333; double lowpass = pow(1.00001-(1.0-GetParameter( kParam_Two )),2.0)/sqrt(overallscale); double drift = pow(GetParameter( kParam_Three ),3)*0.001; double size = (GetParameter( kParam_Four )*1.77)+0.1; double wet = 1.0-(pow(1.0-GetParameter( kParam_Five ),3)); delayI = 3407.0*size; delayJ = 1823.0*size; delayK = 859.0*size; delayL = 331.0*size; delayA = 4801.0*size; delayB = 2909.0*size; delayC = 1153.0*size; delayD = 461.0*size; delayE = 7607.0*size; delayF = 4217.0*size; delayG = 2269.0*size; delayH = 1597.0*size; delayM = 256; while (nSampleFrames-- > 0) { double inputSampleL = *inputL; double inputSampleR = *inputR; if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17; if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17; double drySampleL = inputSampleL; double drySampleR = inputSampleR; vibM += (oldfpd*drift); if (vibM > (3.141592653589793238*2.0)) { vibM = 0.0; oldfpd = 0.4294967295+(fpdL*0.0000000000618); } aML[countM] = inputSampleL * attenuate; aMR[countM] = inputSampleR * attenuate; countM++; if (countM < 0 || countM > delayM) countM = 0; double offsetML = (sin(vibM)+1.0)*127; double offsetMR = (sin(vibM+(3.141592653589793238/2.0))+1.0)*127; int workingML = countM + offsetML; int workingMR = countM + offsetMR; double interpolML = (aML[workingML-((workingML > delayM)?delayM+1:0)] * (1-(offsetML-floor(offsetML)))); interpolML += (aML[workingML+1-((workingML+1 > delayM)?delayM+1:0)] * ((offsetML-floor(offsetML))) ); double interpolMR = (aMR[workingMR-((workingMR > delayM)?delayM+1:0)] * (1-(offsetMR-floor(offsetMR)))); interpolMR += (aMR[workingMR+1-((workingMR+1 > delayM)?delayM+1:0)] * ((offsetMR-floor(offsetMR))) ); inputSampleL = interpolML; inputSampleR = interpolMR; //predelay that applies vibrato //want vibrato speed AND depth like in MatrixVerb iirAL = (iirAL*(1.0-lowpass))+(inputSampleL*lowpass); inputSampleL = iirAL; iirAR = (iirAR*(1.0-lowpass))+(inputSampleR*lowpass); inputSampleR = iirAR; //initial filter cycle++; if (cycle == cycleEnd) { //hit the end point and we do a reverb sample aIL[countI] = inputSampleL + (feedbackAR * regen); aJL[countJ] = inputSampleL + (feedbackBR * regen); aKL[countK] = inputSampleL + (feedbackCR * regen); aLL[countL] = inputSampleL + (feedbackDR * regen); aIR[countI] = inputSampleR + (feedbackAL * regen); aJR[countJ] = inputSampleR + (feedbackBL * regen); aKR[countK] = inputSampleR + (feedbackCL * regen); aLR[countL] = inputSampleR + (feedbackDL * regen); countI++; if (countI < 0 || countI > delayI) countI = 0; countJ++; if (countJ < 0 || countJ > delayJ) countJ = 0; countK++; if (countK < 0 || countK > delayK) countK = 0; countL++; if (countL < 0 || countL > delayL) countL = 0; double outIL = aIL[countI-((countI > delayI)?delayI+1:0)]; double outJL = aJL[countJ-((countJ > delayJ)?delayJ+1:0)]; double outKL = aKL[countK-((countK > delayK)?delayK+1:0)]; double outLL = aLL[countL-((countL > delayL)?delayL+1:0)]; double outIR = aIR[countI-((countI > delayI)?delayI+1:0)]; double outJR = aJR[countJ-((countJ > delayJ)?delayJ+1:0)]; double outKR = aKR[countK-((countK > delayK)?delayK+1:0)]; double outLR = aLR[countL-((countL > delayL)?delayL+1:0)]; //first block: now we have four outputs aAL[countA] = (outIL - (outJL + outKL + outLL)); aBL[countB] = (outJL - (outIL + outKL + outLL)); aCL[countC] = (outKL - (outIL + outJL + outLL)); aDL[countD] = (outLL - (outIL + outJL + outKL)); aAR[countA] = (outIR - (outJR + outKR + outLR)); aBR[countB] = (outJR - (outIR + outKR + outLR)); aCR[countC] = (outKR - (outIR + outJR + outLR)); aDR[countD] = (outLR - (outIR + outJR + outKR)); 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; double outAL = aAL[countA-((countA > delayA)?delayA+1:0)]; double outBL = aBL[countB-((countB > delayB)?delayB+1:0)]; double outCL = aCL[countC-((countC > delayC)?delayC+1:0)]; double outDL = aDL[countD-((countD > delayD)?delayD+1:0)]; double outAR = aAR[countA-((countA > delayA)?delayA+1:0)]; double outBR = aBR[countB-((countB > delayB)?delayB+1:0)]; double outCR = aCR[countC-((countC > delayC)?delayC+1:0)]; double outDR = aDR[countD-((countD > delayD)?delayD+1:0)]; //second block: four more outputs aEL[countE] = (outAL - (outBL + outCL + outDL)); aFL[countF] = (outBL - (outAL + outCL + outDL)); aGL[countG] = (outCL - (outAL + outBL + outDL)); aHL[countH] = (outDL - (outAL + outBL + outCL)); aER[countE] = (outAR - (outBR + outCR + outDR)); aFR[countF] = (outBR - (outAR + outCR + outDR)); aGR[countG] = (outCR - (outAR + outBR + outDR)); aHR[countH] = (outDR - (outAR + outBR + outCR)); 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; double outEL = aEL[countE-((countE > delayE)?delayE+1:0)]; double outFL = aFL[countF-((countF > delayF)?delayF+1:0)]; double outGL = aGL[countG-((countG > delayG)?delayG+1:0)]; double outHL = aHL[countH-((countH > delayH)?delayH+1:0)]; double outER = aER[countE-((countE > delayE)?delayE+1:0)]; double outFR = aFR[countF-((countF > delayF)?delayF+1:0)]; double outGR = aGR[countG-((countG > delayG)?delayG+1:0)]; double outHR = aHR[countH-((countH > delayH)?delayH+1:0)]; //third block: final outputs feedbackAL = (outEL - (outFL + outGL + outHL)); feedbackBL = (outFL - (outEL + outGL + outHL)); feedbackCL = (outGL - (outEL + outFL + outHL)); feedbackDL = (outHL - (outEL + outFL + outGL)); feedbackAR = (outER - (outFR + outGR + outHR)); feedbackBR = (outFR - (outER + outGR + outHR)); feedbackCR = (outGR - (outER + outFR + outHR)); feedbackDR = (outHR - (outER + outFR + outGR)); //which we need to feed back into the input again, a bit inputSampleL = (outEL + outFL + outGL + outHL)/8.0; inputSampleR = (outER + outFR + outGR + outHR)/8.0; //and take the final combined sum of outputs if (cycleEnd == 4) { lastRefL[0] = lastRefL[4]; //start from previous last lastRefL[2] = (lastRefL[0] + inputSampleL)/2; //half lastRefL[1] = (lastRefL[0] + lastRefL[2])/2; //one quarter lastRefL[3] = (lastRefL[2] + inputSampleL)/2; //three quarters lastRefL[4] = inputSampleL; //full lastRefR[0] = lastRefR[4]; //start from previous last lastRefR[2] = (lastRefR[0] + inputSampleR)/2; //half lastRefR[1] = (lastRefR[0] + lastRefR[2])/2; //one quarter lastRefR[3] = (lastRefR[2] + inputSampleR)/2; //three quarters lastRefR[4] = inputSampleR; //full } if (cycleEnd == 3) { lastRefL[0] = lastRefL[3]; //start from previous last lastRefL[2] = (lastRefL[0]+lastRefL[0]+inputSampleL)/3; //third lastRefL[1] = (lastRefL[0]+inputSampleL+inputSampleL)/3; //two thirds lastRefL[3] = inputSampleL; //full lastRefR[0] = lastRefR[3]; //start from previous last lastRefR[2] = (lastRefR[0]+lastRefR[0]+inputSampleR)/3; //third lastRefR[1] = (lastRefR[0]+inputSampleR+inputSampleR)/3; //two thirds lastRefR[3] = inputSampleR; //full } if (cycleEnd == 2) { lastRefL[0] = lastRefL[2]; //start from previous last lastRefL[1] = (lastRefL[0] + inputSampleL)/2; //half lastRefL[2] = inputSampleL; //full lastRefR[0] = lastRefR[2]; //start from previous last lastRefR[1] = (lastRefR[0] + inputSampleR)/2; //half lastRefR[2] = inputSampleR; //full } if (cycleEnd == 1) { lastRefL[0] = inputSampleL; lastRefR[0] = inputSampleR; } cycle = 0; //reset inputSampleL = lastRefL[cycle]; inputSampleR = lastRefR[cycle]; } else { inputSampleL = lastRefL[cycle]; inputSampleR = lastRefR[cycle]; //we are going through our references now } iirBL = (iirBL*(1.0-lowpass))+(inputSampleL*lowpass); inputSampleL = iirBL; iirBR = (iirBR*(1.0-lowpass))+(inputSampleR*lowpass); inputSampleR = iirBR; //end filter if (wet < 1.0) { inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet)); inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet)); } //begin 32 bit stereo floating point dither int expon; frexpf((float)inputSampleL, &expon); fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5; inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62)); frexpf((float)inputSampleR, &expon); fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5; inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62)); //end 32 bit stereo floating point dither *outputL = inputSampleL; *outputR = inputSampleR; //direct stereo out inputL += 1; inputR += 1; outputL += 1; outputR += 1; } return noErr; }