/* * File: Precious.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. * */ /*============================================================================= Precious.cpp =============================================================================*/ #include "Precious.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ COMPONENT_ENTRY(Precious) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Precious::Precious //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Precious::Precious(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 } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Precious::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Precious::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Precious::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Precious::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; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Precious::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Precious::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Precious::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Precious::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // Precious::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Precious::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____PreciousEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Precious::PreciousKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Precious::PreciousKernel::Reset() { for(int count = 0; count < 34; count++) {b[count] = 0;} lastSample = 0.0; fpd = 17; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Precious::PreciousKernel::Process //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Precious::PreciousKernel::Process( const Float32 *inSourceP, Float32 *inDestP, UInt32 inFramesToProcess, UInt32 inNumChannels, bool &ioSilence ) { UInt32 nSampleFrames = inFramesToProcess; const Float32 *sourceP = inSourceP; Float32 *destP = inDestP; Float64 threshold = GetParameter( kParam_One ); Float64 hardness; Float64 breakup = (1.0-(threshold/2.0))*3.14159265358979; Float64 bridgerectifier; Float64 sqdrive = GetParameter( kParam_Two ); if (sqdrive > 1.0) sqdrive *= sqdrive; sqdrive = sqrt(sqdrive); Float64 indrive = GetParameter( kParam_Three ); if (indrive > 1.0) indrive *= indrive; indrive *= (1.0-(0.2095*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 ); if (threshold < 1) hardness = 1.0 / (1.0-threshold); else hardness = 999999999999999999999.0; //set up hardness to exactly fill gap between threshold and 0db //if threshold is literally 1 then hardness is infinite, so we make it very big while (nSampleFrames-- > 0) { long double inputSample = *sourceP; if (fabs(inputSample)<1.18e-37) inputSample = fpd * 1.18e-37; inputSample *= indrive; //calibrated to match gain through convolution and -0.3 correction 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] * (0.59188440274551890 - (0.00008361469668405*fabs(b[1])))); inputSample -= (b[2] * (0.24439750948076133 + (0.00002651678396848*fabs(b[2])))); inputSample += (b[3] * (0.14109876103205621 - (0.00000840487181372*fabs(b[3])))); inputSample -= (b[4] * (0.10053507128157971 + (0.00001768100964598*fabs(b[4])))); inputSample += (b[5] * (0.05859287880626238 - (0.00000361398065989*fabs(b[5])))); inputSample -= (b[6] * (0.04337406889823660 + (0.00000735941182117*fabs(b[6])))); inputSample += (b[7] * (0.01589900680531097 + (0.00000207347387987*fabs(b[7])))); inputSample -= (b[8] * (0.01087234854973281 + (0.00000732123412029*fabs(b[8])))); inputSample -= (b[9] * (0.00845782429679176 - (0.00000133058605071*fabs(b[9])))); inputSample += (b[10] * (0.00662278586618295 - (0.00000424594730611*fabs(b[10])))); inputSample -= (b[11] * (0.02000592193760155 + (0.00000632896879068*fabs(b[11])))); inputSample += (b[12] * (0.01321157777167565 - (0.00001421171592570*fabs(b[12])))); inputSample -= (b[13] * (0.02249955362988238 + (0.00000163937127317*fabs(b[13])))); inputSample += (b[14] * (0.01196492077581504 - (0.00000535385220676*fabs(b[14])))); inputSample -= (b[15] * (0.01905917427000097 + (0.00000121672882030*fabs(b[15])))); inputSample += (b[16] * (0.00761909482108073 - (0.00000326242895115*fabs(b[16])))); inputSample -= (b[17] * (0.01362744780256239 + (0.00000359274216003*fabs(b[17])))); inputSample += (b[18] * (0.00200183122683721 - (0.00000089207452791*fabs(b[18])))); inputSample -= (b[19] * (0.00833042637239315 + (0.00000946767677294*fabs(b[19])))); inputSample -= (b[20] * (0.00258481175207224 - (0.00000087429351464*fabs(b[20])))); inputSample -= (b[21] * (0.00459744479712244 - (0.00000049519758701*fabs(b[21])))); inputSample -= (b[22] * (0.00534277030993820 + (0.00000397547847155*fabs(b[22])))); inputSample -= (b[23] * (0.00272332919605675 + (0.00000040077229097*fabs(b[23])))); inputSample -= (b[24] * (0.00637243782359372 - (0.00000139419072176*fabs(b[24])))); inputSample -= (b[25] * (0.00233001590327504 + (0.00000420129915747*fabs(b[25])))); inputSample -= (b[26] * (0.00623296727793041 + (0.00000019010664856*fabs(b[26])))); inputSample -= (b[27] * (0.00276177096376805 + (0.00000580301901385*fabs(b[27])))); inputSample -= (b[28] * (0.00559184754866264 + (0.00000080597287792*fabs(b[28])))); inputSample -= (b[29] * (0.00343180144395919 - (0.00000243701142085*fabs(b[29])))); inputSample -= (b[30] * (0.00493325428861701 + (0.00000300985740900*fabs(b[30])))); inputSample -= (b[31] * (0.00396140827680823 - (0.00000051459681789*fabs(b[31])))); inputSample -= (b[32] * (0.00448497879902493 + (0.00000744412841743*fabs(b[32])))); inputSample -= (b[33] * (0.00425146888772076 - (0.00000082346016542*fabs(b[33]))));} //Precision 8 if (fabs(inputSample) > threshold) { bridgerectifier = (fabs(inputSample)-threshold)*hardness; //skip flat area if any, scale to distortion limit if (bridgerectifier > breakup) bridgerectifier = breakup; //max value for sine function, 'breakup' modeling for trashed console tone //more hardness = more solidness behind breakup modeling. more softness, more 'grunge' and sag bridgerectifier = sin(bridgerectifier)/hardness; //do the sine factor, scale back to proper amount if (inputSample > 0) inputSample = bridgerectifier+threshold; else inputSample = -(bridgerectifier+threshold); } //otherwise we leave it untouched by the overdrive stuff randy = ((rand()/(double)RAND_MAX)*0.017); inputSample = ((inputSample*(1-randy))+(lastSample*randy)) * outlevel; lastSample = inputSample; //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; } }