/* * File: SoftClock.cpp * * Version: 1.0 * * Created: 3/5/25 * * Copyright: Copyright © 2025 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. * */ /*============================================================================= SoftClock.cpp =============================================================================*/ #include "SoftClock.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ COMPONENT_ENTRY(SoftClock) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // SoftClock::SoftClock //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ SoftClock::SoftClock(AudioUnit component) : AUEffectBase(component) { CreateElements(); Globals()->UseIndexedParameters(kNumberOfParameters); SetParameter(kParam_A, kDefaultValue_ParamA ); SetParameter(kParam_B, kDefaultValue_ParamB ); SetParameter(kParam_C, kDefaultValue_ParamC ); SetParameter(kParam_D, kDefaultValue_ParamD ); SetParameter(kParam_E, kDefaultValue_ParamE ); SetParameter(kParam_F, kDefaultValue_ParamF ); SetParameter(kParam_G, kDefaultValue_ParamG ); SetParameter(kParam_H, kDefaultValue_ParamH ); #if AU_DEBUG_DISPATCHER mDebugDispatcher = new AUDebugDispatcher (this); #endif } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // SoftClock::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult SoftClock::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // SoftClock::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult SoftClock::GetParameterInfo(AudioUnitScope inScope, AudioUnitParameterID inParameterID, AudioUnitParameterInfo &outParameterInfo ) { ComponentResult result = noErr; outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable | kAudioUnitParameterFlag_IsReadable; if (inScope == kAudioUnitScope_Global) { switch(inParameterID) { case kParam_A: AUBase::FillInParameterName (outParameterInfo, kParameterAName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Indexed; outParameterInfo.minValue = 40; outParameterInfo.maxValue = 240; outParameterInfo.defaultValue = kDefaultValue_ParamA; break; case kParam_B: AUBase::FillInParameterName (outParameterInfo, kParameterBName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Indexed; outParameterInfo.minValue = 0; outParameterInfo.maxValue = 32; outParameterInfo.defaultValue = kDefaultValue_ParamB; break; case kParam_C: AUBase::FillInParameterName (outParameterInfo, kParameterCName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Indexed; outParameterInfo.minValue = 0; outParameterInfo.maxValue = 16; outParameterInfo.defaultValue = kDefaultValue_ParamC; break; case kParam_D: AUBase::FillInParameterName (outParameterInfo, kParameterDName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamD; break; case kParam_E: AUBase::FillInParameterName (outParameterInfo, kParameterEName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamE; break; case kParam_F: AUBase::FillInParameterName (outParameterInfo, kParameterFName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamF; break; case kParam_G: AUBase::FillInParameterName (outParameterInfo, kParameterGName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamG; break; case kParam_H: AUBase::FillInParameterName (outParameterInfo, kParameterHName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamH; break; default: result = kAudioUnitErr_InvalidParameter; break; } } else { result = kAudioUnitErr_InvalidParameter; } return result; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // SoftClock::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult SoftClock::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 SoftClock::SupportedNumChannels(const AUChannelInfo ** outInfo) { if (outInfo != NULL) { static AUChannelInfo info; info.inChannels = 2; info.outChannels = 2; *outInfo = &info; } return 1; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // SoftClock::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult SoftClock::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // SoftClock::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult SoftClock::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____SoftClockEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // SoftClock::SoftClockKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult SoftClock::Reset(AudioUnitScope inScope, AudioUnitElement inElement) { sinePos = 0.0; barPos = 0.0; beatPos = 0; for (int x = 0; x < 34; x++) {beatAccent[x] = 0.0; beatSwing[x] = 0.0;} inc = 0.0; beatTable[0]=0; beatTable[1]=1; beatTable[2]=2; beatTable[3]=3; beatTable[4]=4; beatTable[5]=5; beatTable[6]=6; beatTable[7]=7; beatTable[8]=8; beatTable[9]=9; beatTable[10]=10; beatTable[11]=11; beatTable[12]=11; beatTable[13]=11; beatTable[14]=11; beatTable[15]=13; beatTable[16]=16; beatTable[17]=13; beatTable[18]=13; beatTable[19]=17; beatTable[20]=17; beatTable[21]=17; beatTable[22]=17; beatTable[23]=19; beatTable[24]=24; beatTable[25]=19; beatTable[26]=19; beatTable[27]=19; beatTable[28]=23; beatTable[29]=23; beatTable[30]=23; beatTable[31]=23; beatTable[32]=32; beatTable[33]=32; beatTable[34]=32; fpdL = 1.0; while (fpdL < 16386) fpdL = rand()*UINT32_MAX; fpdR = 1.0; while (fpdR < 16386) fpdR = rand()*UINT32_MAX; return noErr; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // SoftClock::ProcessBufferLists //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ OSStatus SoftClock::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 bpm = GetParameter( kParam_A ); int beatCode = GetParameter( kParam_B ); double notes = (double)fmax(GetParameter( kParam_C )/4.0, 0.125); double bpmTarget = (GetSampleRate()*60.0)/((double)bpm*notes); double swing = GetParameter( kParam_D )*bpmTarget*0.66666; double bigbeat = GetParameter( kParam_E )*bpmTarget*0.33333; //swing makes beats hit LATER, so the One is 0.0 //bigbeat makes snares hit either on the beat or later int beatMax = beatTable[beatCode]; //only some counts are literal, others are ways to do prime grooves with different subrhythms for (int x = 0; x < (beatMax+1); x++) { beatAccent[x] = ((double)fabs((double)beatMax-((double)x*2.0)))/(double)(beatMax*1.618033988749894); if (x % 2 > 0) beatSwing[x] = 0.0; else beatSwing[x] = swing; } //this makes the non-accented beats drop down to quiet and back up to half volume if (beatCode > 0) beatAccent[1] = 1.0; beatSwing[1] = 0.0; //first note is an accent at full crank switch (beatCode) { case 0: break; //not used case 1: break; //1 case 2: break; //2 case 3: break; //3 case 4: beatAccent[3]=0.9; beatSwing[3]=bigbeat; break; //4-22 case 5: beatAccent[4]=0.9; beatSwing[4]=bigbeat; break; //5-32 case 6: beatAccent[4]=0.9; beatSwing[4]=bigbeat; break; //6-33 case 7: beatAccent[5]=0.9; beatSwing[5]=bigbeat; break; //7-43 case 8: beatAccent[5]=0.9; beatSwing[5]=bigbeat; break; //8-44 case 9: beatAccent[4]=0.9; beatAccent[7]=0.8; beatSwing[4]=bigbeat; beatSwing[7]=bigbeat; break; //9-333 case 10: beatAccent[6]=0.9; beatSwing[6]=bigbeat; break; //10-55 case 11: beatAccent[4]=0.9; beatAccent[7]=0.8; beatAccent[10]=0.7; beatSwing[4]=bigbeat; beatSwing[7]=bigbeat; beatSwing[10]=bigbeat; break; //11-3332 case 12: beatAccent[5]=0.9; beatAccent[9]=0.8; beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; break; //11-443 case 13: beatAccent[6]=0.9; beatAccent[11]=0.8; beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; break; //11-551 case 14: beatAccent[7]=0.9; beatSwing[7]=bigbeat; break; //11-65 case 15: beatAccent[4]=0.9; beatAccent[7]=0.8; beatAccent[10]=0.7; beatSwing[4]=bigbeat; beatSwing[7]=bigbeat; beatSwing[10]=bigbeat; break; //13-3334 case 16: beatAccent[9]=0.9; beatSwing[9]=bigbeat; break; //16-88 case 17: beatAccent[5]=0.9; beatAccent[9]=0.8; beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; break; //13-445 case 18: beatAccent[6]=0.9; beatAccent[11]=0.8; beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; break; //13-553 case 19: beatAccent[5]=0.9; beatAccent[9]=0.85; beatAccent[13]=0.8; beatAccent[17]=0.75; beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; beatSwing[13]=bigbeat; beatSwing[17]=bigbeat; break; //17-44441 case 20: beatAccent[6]=0.9; beatAccent[11]=0.8; beatAccent[16]=0.7; beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; beatSwing[16]=bigbeat; break; //17-5552 case 21: beatAccent[8]=0.9; beatAccent[15]=0.8; beatSwing[8]=bigbeat; beatSwing[15]=bigbeat; break; //17-773 case 22: beatAccent[9]=0.9; beatAccent[17]=0.8; beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; break; //17-881 case 23: beatAccent[5]=0.9; beatAccent[9]=0.85; beatAccent[13]=0.8; beatAccent[17]=0.75; beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; beatSwing[13]=bigbeat; beatSwing[17]=bigbeat; break; //19-44443 case 24: beatAccent[9]=0.9; beatAccent[17]=0.8; beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; break; //24-888 case 25: beatAccent[6]=0.9; beatAccent[11]=0.8; beatAccent[16]=0.7; beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; beatSwing[16]=bigbeat; break; //19-5554 case 26: beatAccent[8]=0.9; beatAccent[15]=0.8; beatSwing[8]=bigbeat; beatSwing[15]=bigbeat; break; //19-775 case 27: beatAccent[9]=0.9; beatAccent[17]=0.8; beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; break; //19-883 case 28: beatAccent[5]=0.9; beatAccent[9]=0.85; beatAccent[13]=0.8; beatAccent[17]=0.75; beatAccent[21]=0.7; beatSwing[5]=bigbeat; beatSwing[9]=bigbeat; beatSwing[13]=bigbeat; beatSwing[17]=bigbeat; beatSwing[21]=bigbeat; break; //23-444443 case 29: beatAccent[6]=0.9; beatAccent[11]=0.8; beatAccent[16]=0.7; beatSwing[6]=bigbeat; beatSwing[11]=bigbeat; beatSwing[16]=bigbeat; break; //23-5558 case 30: beatAccent[8]=0.9; beatAccent[15]=0.8; beatAccent[22]=0.7; beatSwing[8]=bigbeat; beatSwing[15]=bigbeat; beatSwing[22]=bigbeat; break; //23-7772 case 31: beatAccent[9]=0.9; beatAccent[17]=0.8; beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; break; //23-887 case 32: beatAccent[9]=0.9; beatAccent[17]=0.8; beatAccent[25]=0.7; beatSwing[9]=bigbeat; beatSwing[17]=bigbeat; beatSwing[25]=bigbeat; break; //32-8888 default: break; } double accent = 1.0-pow(1.0-GetParameter( kParam_F ),2); double chaseSpeed = ((GetParameter( kParam_H )*0.00016)+0.000016)/overallscale; double rootSpeed = 1.0-(chaseSpeed*((1.0-GetParameter( kParam_H ))+0.5)*4.0); double pulseWidth = ((GetParameter( kParam_G )*0.2)-((1.0-GetParameter( kParam_H ))*0.03))/chaseSpeed; 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; barPos += 1.0; if (barPos>bpmTarget) { barPos=0.0; beatPos++; if (beatPos>beatMax) beatPos=1; } if ((barPos < (pulseWidth+beatSwing[beatPos])) && (barPos > beatSwing[beatPos])) inc = (((beatAccent[beatPos]*accent)+(1.0-accent))*chaseSpeed)+(inc*(1.0-chaseSpeed)); else inc *= rootSpeed; sinePos += inc; if (sinePos > 6.283185307179586) sinePos -= 6.283185307179586; inputSampleL = inputSampleR = sin(sin(sinePos)*inc*8.0); //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; }