/* * File: Distance3.cpp * * Version: 1.0 * * Created: 2/23/24 * * Copyright: Copyright © 2024 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. * */ /*============================================================================= Distance3.cpp =============================================================================*/ #include "Distance3.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ AUDIOCOMPONENT_ENTRY(AUBaseFactory, Distance3) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Distance3::Distance3 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Distance3::Distance3(AudioUnit component) : AUEffectBase(component) { CreateElements(); Globals()->UseIndexedParameters(kNumberOfParameters); SetParameter(kParam_One, kDefaultValue_ParamOne ); SetParameter(kParam_Two, kDefaultValue_ParamTwo ); SetParameter(kParam_Three, kDefaultValue_ParamThree ); #if AU_DEBUG_DISPATCHER mDebugDispatcher = new AUDebugDispatcher (this); #endif } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Distance3::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Distance3::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Distance3::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Distance3::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_CustomUnit; outParameterInfo.unitName = kParameterOneUnit; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 10.0; outParameterInfo.defaultValue = kDefaultValue_ParamOne; break; case kParam_Two: AUBase::FillInParameterName (outParameterInfo, kParameterTwoName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 70.0; outParameterInfo.maxValue = 140.0; 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; default: result = kAudioUnitErr_InvalidParameter; break; } } else { result = kAudioUnitErr_InvalidParameter; } return result; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Distance3::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Distance3::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Distance3::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Distance3::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // Distance3::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Distance3::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____Distance3EffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Distance3::Distance3Kernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Distance3::Distance3Kernel::Reset() { prevresultAL = lastclampAL = clampAL = changeAL = lastAL = 0.0; prevresultBL = lastclampBL = clampBL = changeBL = lastBL = 0.0; prevresultCL = lastclampCL = clampCL = changeCL = lastCL = 0.0; for(int count = 0; count < dscBuf+2; count++) { dBaL[count] = 0.0; dBbL[count] = 0.0; dBcL[count] = 0.0; } dBaPosL = 0.0; dBbPosL = 0.0; dBcPosL = 0.0; dBaXL = 1; dBbXL = 1; dBcXL = 1; fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Distance3::Distance3Kernel::Process //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Distance3::Distance3Kernel::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(); double softslew = (GetParameter( kParam_One )*10.0)+0.5; softslew *= overallscale; double outslew = softslew * (1.0-(GetParameter( kParam_One )*0.0333)); double refdB = GetParameter( kParam_Two ); double topdB = 0.000000075 * pow(10.0,refdB/20.0) * overallscale; double wet = GetParameter( kParam_Three ); while (nSampleFrames-- > 0) { double inputSampleL = *sourceP; if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpd * 1.18e-17; double drySampleL = inputSampleL; inputSampleL *= softslew; lastclampAL = clampAL; clampAL = inputSampleL - lastAL; double postfilter = changeAL = fabs(clampAL - lastclampAL); postfilter += (softslew / 2.0); inputSampleL /= outslew; inputSampleL += (prevresultAL * postfilter); inputSampleL /= (postfilter + 1.0); prevresultAL = inputSampleL; //do an IIR like thing to further squish superdistant stuff inputSampleL *= topdB; if (inputSampleL < -0.222) inputSampleL = -0.222; if (inputSampleL > 0.222) inputSampleL = 0.222; //Air Discontinuity A begin dBaL[dBaXL] = inputSampleL; dBaPosL *= 0.5; dBaPosL += fabs((inputSampleL*((inputSampleL*0.25)-0.5))*0.5); int dBdly = floor(dBaPosL*dscBuf); double dBi = (dBaPosL*dscBuf)-dBdly; inputSampleL = dBaL[dBaXL-dBdly +((dBaXL-dBdly < 0)?dscBuf:0)]*(1.0-dBi); dBdly++; inputSampleL += dBaL[dBaXL-dBdly +((dBaXL-dBdly < 0)?dscBuf:0)]*dBi; dBaXL++; if (dBaXL < 0 || dBaXL >= dscBuf) dBaXL = 0; //Air Discontinuity A end inputSampleL /= topdB; inputSampleL *= softslew; lastclampBL = clampBL; clampBL = inputSampleL - lastBL; postfilter = changeBL = fabs(clampBL - lastclampBL); postfilter += (softslew / 2.0); lastBL = inputSampleL; inputSampleL /= outslew; inputSampleL += (prevresultBL * postfilter); inputSampleL /= (postfilter + 1.0); prevresultBL = inputSampleL; //do an IIR like thing to further squish superdistant stuff inputSampleL *= topdB; if (inputSampleL < -0.222) inputSampleL = -0.222; if (inputSampleL > 0.222) inputSampleL = 0.222; //Air Discontinuity B begin dBbL[dBbXL] = inputSampleL; dBbPosL *= 0.5; dBbPosL += fabs((inputSampleL*((inputSampleL*0.25)-0.5))*0.5); dBdly = floor(dBbPosL*dscBuf); dBi = (dBbPosL*dscBuf)-dBdly; inputSampleL = dBbL[dBbXL-dBdly +((dBbXL-dBdly < 0)?dscBuf:0)]*(1.0-dBi); dBdly++; inputSampleL += dBbL[dBbXL-dBdly +((dBbXL-dBdly < 0)?dscBuf:0)]*dBi; dBbXL++; if (dBbXL < 0 || dBbXL >= dscBuf) dBbXL = 0; //Air Discontinuity B end inputSampleL /= topdB; inputSampleL *= softslew; lastclampCL = clampCL; clampCL = inputSampleL - lastCL; postfilter = changeCL = fabs(clampCL - lastclampCL); postfilter += (softslew / 2.0); lastCL = inputSampleL; inputSampleL /= softslew; //don't boost the final time! inputSampleL += (prevresultCL * postfilter); inputSampleL /= (postfilter + 1.0); prevresultCL = inputSampleL; //do an IIR like thing to further squish superdistant stuff inputSampleL *= topdB; if (inputSampleL < -0.222) inputSampleL = -0.222; if (inputSampleL > 0.222) inputSampleL = 0.222; //Air Discontinuity C begin dBcL[dBcXL] = inputSampleL; dBcPosL *= 0.5; dBcPosL += fabs((inputSampleL*((inputSampleL*0.25)-0.5))*0.5); dBdly = floor(dBcPosL*dscBuf); dBi = (dBcPosL*dscBuf)-dBdly; inputSampleL = dBcL[dBcXL-dBdly +((dBcXL-dBdly < 0)?dscBuf:0)]*(1.0-dBi); dBdly++; inputSampleL += dBcL[dBcXL-dBdly +((dBcXL-dBdly < 0)?dscBuf:0)]*dBi; dBcXL++; if (dBcXL < 0 || dBcXL >= dscBuf) dBcXL = 0; //Air Discontinuity C end inputSampleL /= topdB; if (wet < 1.0) inputSampleL = (drySampleL * (1.0-wet))+(inputSampleL*wet); //begin 32 bit floating point dither int expon; frexpf((float)inputSampleL, &expon); fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5; inputSampleL += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62)); //end 32 bit floating point dither *destP = inputSampleL; sourceP += inNumChannels; destP += inNumChannels; } }