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+/*
+* 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. If you do
+* not agree with these terms, please do not use, install, modify or redistribute this Apple
+* software.
+*
+* In consideration of your agreement to abide by the following terms, and subject to these terms,
+* Apple grants you a personal, non-exclusive license, under Apple's copyrights in this
+* original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the
+* Apple Software, with or without modifications, in source and/or binary forms; provided that if you
+* redistribute the Apple Software in its entirety and without modifications, you must retain this
+* notice and the following text and disclaimers in all such redistributions of the Apple Software.
+* Neither the name, trademarks, service marks or logos of Apple Computer, Inc. may be used to
+* endorse or promote products derived from the Apple Software without specific prior written
+* permission from Apple. Except as expressly stated in this notice, no other rights or
+* licenses, express or implied, are granted by Apple herein, including but not limited to any
+* patent rights that may be infringed by your derivative works or by other works in which the
+* Apple Software may be incorporated.
+*
+* The Apple Software is provided by Apple on an "AS IS" basis. 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;
+ }
+}
+
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