/* * File: Elation.cpp * * Version: 1.0 * * Created: 1/11/20 * * Copyright: Copyright © 2020 Airwindows, All Rights Reserved * * 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. * */ /*============================================================================= Elation.cpp =============================================================================*/ #include "Elation.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ COMPONENT_ENTRY(Elation) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Elation::Elation //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Elation::Elation(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 ); #if AU_DEBUG_DISPATCHER mDebugDispatcher = new AUDebugDispatcher (this); #endif } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Elation::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Elation::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Elation::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Elation::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 = 3.0; outParameterInfo.defaultValue = kDefaultValue_ParamTwo; break; case kParam_Three: AUBase::FillInParameterName (outParameterInfo, kParameterThreeName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 3.0; 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; default: result = kAudioUnitErr_InvalidParameter; break; } } else { result = kAudioUnitErr_InvalidParameter; } return result; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Elation::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Elation::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Elation::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Elation::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // Elation::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Elation::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____ElationEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Elation::ElationKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Elation::ElationKernel::Reset() { for(int count = 0; count < 34; count++) {b[count] = 0;} compA = 1.0; compB = 1.0; flip = false; previous = 0.0; compC = 1.0; compD = 1.0; previousB = 0.0; lastSample = 0.0; fpd = 17; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Elation::ElationKernel::Process //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Elation::ElationKernel::Process( const Float32 *inSourceP, Float32 *inDestP, UInt32 inFramesToProcess, UInt32 inNumChannels, bool &ioSilence ) { UInt32 nSampleFrames = inFramesToProcess; const Float32 *sourceP = inSourceP; Float32 *destP = inDestP; Float64 wet = GetParameter( kParam_One ); Float64 sqdrive = GetParameter( kParam_Two ); if (sqdrive > 1.0) sqdrive *= sqdrive; sqdrive = sqrt(sqdrive); Float64 indrive = GetParameter( kParam_Three ); Float64 compthreshold = (6.0 - indrive)/6.0; Float64 recoveryspd = indrive / 32.0; if (indrive > 1.0) indrive *= indrive; indrive *= (1.0+(0.226*sqdrive)); //no gain loss of convolution for APIcolypse //calibrate this to match noise level with character at 1.0 //you get for instance 0.819 and 1.0-0.819 is 0.181 Float64 randy; Float64 outlevel = GetParameter( kParam_Four ); Float64 threshSample; Float64 abSample; Float64 outputSample; while (nSampleFrames-- > 0) { long double inputSample = *sourceP; if (fabs(inputSample)<1.18e-37) inputSample = fpd * 1.18e-37; double drySample = inputSample; inputSample *= indrive; abSample = fabs(inputSample); if (abSample > previous) threshSample = previous; else threshSample = abSample; //calibrated to match gain through convolution and -0.3 correction //quick lil compression if (threshSample > 2.0) { compA = (compA + (1.0 / threshSample)) / 2.0; compB = (compB + (1.0 / threshSample)) / 2.0; } if (flip) { inputSample *= compA; threshSample *= compA; if (threshSample > compthreshold) {compA = (compA + compA + (compthreshold / threshSample)) / 3.0;} else {if (compA < 1.0) compA += pow((1.0-compA)*recoveryspd,7);} } else { inputSample *= compB; threshSample *= compB; if (threshSample > compthreshold) {compB = (compB + compB + (compthreshold / threshSample)) / 3.0;} else {if (compB < 1.0) compB += pow((1.0-compB)*recoveryspd,7);} } previous = abSample; //now the convolution if (sqdrive > 0.0){ b[33] = b[32]; b[32] = b[31]; b[31] = b[30]; b[30] = b[29]; b[29] = b[28]; b[28] = b[27]; b[27] = b[26]; b[26] = b[25]; b[25] = b[24]; b[24] = b[23]; b[23] = b[22]; b[22] = b[21]; b[21] = b[20]; b[20] = b[19]; b[19] = b[18]; b[18] = b[17]; b[17] = b[16]; b[16] = b[15]; b[15] = b[14]; b[14] = b[13]; b[13] = b[12]; b[12] = b[11]; b[11] = b[10]; b[10] = b[9]; b[9] = b[8]; b[8] = b[7]; b[7] = b[6]; b[6] = b[5]; b[5] = b[4]; b[4] = b[3]; b[3] = b[2]; b[2] = b[1]; b[1] = b[0]; b[0] = inputSample * sqdrive; //inputSample -= ((b[1] * (0.25867935358656502 - (0.00045755657070112*fabs(b[1]))))*threshold); inputSample -= (b[1] * (0.25867935358656502 - (0.00045755657070112*fabs(b[1])))); inputSample += (b[2] * (0.11509367290253694 - (0.00017494270657228*fabs(b[2])))); inputSample -= (b[3] * (0.06709853575891785 - (0.00058913102597723*fabs(b[3])))); inputSample += (b[4] * (0.01871006356851681 - (0.00003387358004645*fabs(b[4])))); inputSample -= (b[5] * (0.00794797957360465 - (0.00044224784691203*fabs(b[5])))); inputSample -= (b[6] * (0.01956921817394220 - (0.00006718936750076*fabs(b[6])))); inputSample += (b[7] * (0.01682120257195205 + (0.00032857446292230*fabs(b[7])))); inputSample -= (b[8] * (0.03401069039824205 - (0.00013634182872897*fabs(b[8])))); inputSample += (b[9] * (0.02369950268232634 + (0.00023112685751657*fabs(b[9])))); inputSample -= (b[10] * (0.03477071178117132 - (0.00018029792231600*fabs(b[10])))); inputSample += (b[11] * (0.02024369717958201 + (0.00017337813374202*fabs(b[11])))); inputSample -= (b[12] * (0.02819087729102172 - (0.00021438538665420*fabs(b[12])))); inputSample += (b[13] * (0.01147946743141303 + (0.00014424066034649*fabs(b[13])))); inputSample -= (b[14] * (0.01894777011468867 - (0.00021549146262408*fabs(b[14])))); inputSample += (b[15] * (0.00301370330346873 + (0.00013527460148394*fabs(b[15])))); inputSample -= (b[16] * (0.01067147835815486 - (0.00020960689910868*fabs(b[16])))); inputSample -= (b[17] * (0.00402715397506384 - (0.00014421582712470*fabs(b[17])))); inputSample -= (b[18] * (0.00502221703392005 - (0.00019805767015024*fabs(b[18])))); inputSample -= (b[19] * (0.00808788533308497 - (0.00016095444141931*fabs(b[19])))); inputSample -= (b[20] * (0.00232696588842683 - (0.00018384470981829*fabs(b[20])))); inputSample -= (b[21] * (0.00943950821324531 - (0.00017098987347593*fabs(b[21])))); inputSample -= (b[22] * (0.00193709517200834 - (0.00018151995939591*fabs(b[22])))); inputSample -= (b[23] * (0.00899713952612659 - (0.00017385835059948*fabs(b[23])))); inputSample -= (b[24] * (0.00280584331659089 - (0.00017742164162470*fabs(b[24])))); inputSample -= (b[25] * (0.00780381001954970 - (0.00018002500755708*fabs(b[25])))); inputSample -= (b[26] * (0.00400370310490333 - (0.00017471691087957*fabs(b[26])))); inputSample -= (b[27] * (0.00661527728186928 - (0.00018137323370347*fabs(b[27])))); inputSample -= (b[28] * (0.00496545526864518 - (0.00017681872601767*fabs(b[28])))); inputSample -= (b[29] * (0.00580728820997532 - (0.00018186220389790*fabs(b[29])))); inputSample -= (b[30] * (0.00549309984725666 - (0.00017722985399075*fabs(b[30])))); inputSample -= (b[31] * (0.00542194777529239 - (0.00018486900185338*fabs(b[31])))); inputSample -= (b[32] * (0.00565992080998939 - (0.00018005824393118*fabs(b[32])))); inputSample -= (b[33] * (0.00532121562846656 - (0.00018643189636216*fabs(b[33]))));} //we apply the first samples of the impulse- dynamically adjusted. abSample = fabs(inputSample); if (abSample > previousB) threshSample = previousB; else threshSample = abSample; //calibrated to match gain through convolution and -0.3 correction //quick lil compression if (threshSample > 2.0) { compC = (compC + (1.0 / threshSample)) / 2.0; compD = (compD + (1.0 / threshSample)) / 2.0; } if (flip) { inputSample *= compC; threshSample *= compC; if (threshSample > compthreshold) {compC = (compC + compC + (compthreshold / threshSample)) / 3.0;} else {if (compC < 1.0) compC += pow((1.0-compC)*recoveryspd,7);} } else { inputSample *= compD; threshSample *= compD; if (threshSample > compthreshold) {compD = (compD + compD + (compthreshold / threshSample)) / 3.0;} else {if (compD < 1.0) compD += pow((1.0-compD)*recoveryspd,7);} } previousB = abSample; //another dose of compression, please flip = !flip; randy = ((rand()/(double)RAND_MAX)*0.054); outputSample = ((((inputSample*(1-randy))+(lastSample*randy))*wet)+(drySample*(1.0-wet))) * outlevel; lastSample = inputSample; inputSample = outputSample; //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; } }