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471 lines
17 KiB
C++
Executable file
471 lines
17 KiB
C++
Executable file
/*
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* File: BlockParty.cpp
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*
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* Version: 1.0
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*
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* Created: 2/16/19
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*
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* Copyright: Copyright © 2019 Airwindows, Airwindows uses the MIT license
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*
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* Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. ("Apple") in
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* consideration of your agreement to the following terms, and your use, installation, modification
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* or redistribution of this Apple software constitutes acceptance of these terms. If you do
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* not agree with these terms, please do not use, install, modify or redistribute this Apple
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* software.
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*
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* In consideration of your agreement to abide by the following terms, and subject to these terms,
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* Apple grants you a personal, non-exclusive license, under Apple's copyrights in this
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* original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the
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* Apple Software, with or without modifications, in source and/or binary forms; provided that if you
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* redistribute the Apple Software in its entirety and without modifications, you must retain this
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* notice and the following text and disclaimers in all such redistributions of the Apple Software.
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* Neither the name, trademarks, service marks or logos of Apple Computer, Inc. may be used to
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* endorse or promote products derived from the Apple Software without specific prior written
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* permission from Apple. Except as expressly stated in this notice, no other rights or
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* licenses, express or implied, are granted by Apple herein, including but not limited to any
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* patent rights that may be infringed by your derivative works or by other works in which the
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* Apple Software may be incorporated.
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*
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* The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR
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* IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE
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* OR IN COMBINATION WITH YOUR PRODUCTS.
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*
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* IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE,
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* REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
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* UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN
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* IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*=============================================================================
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BlockParty.cpp
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=============================================================================*/
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#include "BlockParty.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(BlockParty)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// BlockParty::BlockParty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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BlockParty::BlockParty(AudioUnit component)
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: AUEffectBase(component)
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{
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CreateElements();
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Globals()->UseIndexedParameters(kNumberOfParameters);
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SetParameter(kParam_One, kDefaultValue_ParamOne );
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SetParameter(kParam_Two, kDefaultValue_ParamTwo );
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#if AU_DEBUG_DISPATCHER
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mDebugDispatcher = new AUDebugDispatcher (this);
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#endif
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// BlockParty::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BlockParty::GetParameterValueStrings(AudioUnitScope inScope,
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AudioUnitParameterID inParameterID,
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CFArrayRef * outStrings)
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{
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return kAudioUnitErr_InvalidProperty;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// BlockParty::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BlockParty::GetParameterInfo(AudioUnitScope inScope,
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AudioUnitParameterID inParameterID,
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AudioUnitParameterInfo &outParameterInfo )
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{
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ComponentResult result = noErr;
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outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable
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| kAudioUnitParameterFlag_IsReadable;
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if (inScope == kAudioUnitScope_Global) {
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switch(inParameterID)
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{
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case kParam_One:
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AUBase::FillInParameterName (outParameterInfo, kParameterOneName, false);
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outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 1.0;
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outParameterInfo.defaultValue = kDefaultValue_ParamOne;
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break;
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case kParam_Two:
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AUBase::FillInParameterName (outParameterInfo, kParameterTwoName, false);
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outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 1.0;
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outParameterInfo.defaultValue = kDefaultValue_ParamTwo;
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break;
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default:
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result = kAudioUnitErr_InvalidParameter;
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break;
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}
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} else {
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result = kAudioUnitErr_InvalidParameter;
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}
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return result;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// BlockParty::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BlockParty::GetPropertyInfo (AudioUnitPropertyID inID,
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AudioUnitScope inScope,
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AudioUnitElement inElement,
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UInt32 & outDataSize,
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Boolean & outWritable)
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{
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return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// BlockParty::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BlockParty::GetProperty( AudioUnitPropertyID inID,
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AudioUnitScope inScope,
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AudioUnitElement inElement,
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void * outData )
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{
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return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
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}
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// BlockParty::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BlockParty::Initialize()
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{
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ComponentResult result = AUEffectBase::Initialize();
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if (result == noErr)
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Reset(kAudioUnitScope_Global, 0);
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return result;
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}
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#pragma mark ____BlockPartyEffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// BlockParty::BlockPartyKernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void BlockParty::BlockPartyKernel::Reset()
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{
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muSpeedA = 10000;
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muSpeedB = 10000;
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muSpeedC = 10000;
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muSpeedD = 10000;
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muSpeedE = 10000;
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muCoefficientA = 1;
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muCoefficientB = 1;
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muCoefficientC = 1;
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muCoefficientD = 1;
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muCoefficientE = 1;
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lastCoefficientA = 1;
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lastCoefficientB = 1;
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lastCoefficientC = 1;
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lastCoefficientD = 1;
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mergedCoefficients = 1;
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threshold = 1.0;
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thresholdB = 1.0;
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muVary = 1;
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count = 1;
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fpFlip = true;
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fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// BlockParty::BlockPartyKernel::Process
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void BlockParty::BlockPartyKernel::Process( const Float32 *inSourceP,
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Float32 *inDestP,
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UInt32 inFramesToProcess,
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UInt32 inNumChannels,
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bool &ioSilence )
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{
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UInt32 nSampleFrames = inFramesToProcess;
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const Float32 *sourceP = inSourceP;
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Float32 *destP = inDestP;
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double overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= GetSampleRate();
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Float64 targetthreshold = 1.01 - (1.0-pow(1.0-(GetParameter( kParam_One )*0.5),4));
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Float64 wet = GetParameter( kParam_Two );
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Float64 voicing = 0.618033988749894848204586;
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if (overallscale > 0.0) voicing /= overallscale;
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//translate to desired sample rate, 44.1K is the base
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if (voicing < 0.0) voicing = 0.0;
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if (voicing > 1.0) voicing = 1.0;
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//some insanity checking
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while (nSampleFrames-- > 0) {
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double inputSample = *sourceP;
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if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17;
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double drySample = inputSample;
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Float64 muMakeupGain = 1.0 / threshold;
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Float64 outMakeupGain = sqrt(muMakeupGain);
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muMakeupGain += outMakeupGain;
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muMakeupGain *= 0.5;
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//gain settings around threshold
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Float64 release = mergedCoefficients * 32768.0;
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release /= overallscale;
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Float64 fastest = sqrt(release);
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//speed settings around release
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Float64 lastCorrection = mergedCoefficients;
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// µ µ µ µ µ µ µ µ µ µ µ µ is the kitten song o/~
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if (muMakeupGain != 1.0) inputSample = inputSample * muMakeupGain;
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if (count < 1 || count > 3) count = 1;
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switch (count)
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{
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case 1:
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if (fabs(inputSample) > threshold)
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{
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if (inputSample > 0.0) {
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inputSample = (inputSample * voicing) + (targetthreshold * (1.0-voicing));
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threshold = fabs(inputSample);
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} else {
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inputSample = (inputSample * voicing) - (targetthreshold * (1.0-voicing));
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threshold = fabs(inputSample);
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}
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muVary = targetthreshold / fabs(inputSample);
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muAttack = sqrt(fabs(muSpeedA));
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muCoefficientA = muCoefficientA * (muAttack-1.0);
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if (muVary < threshold)
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{
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muCoefficientA = muCoefficientA + targetthreshold;
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}
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else
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{
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muCoefficientA = muCoefficientA + muVary;
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}
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muCoefficientA = muCoefficientA / muAttack;
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}
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else
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{
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threshold = targetthreshold;
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muCoefficientA = muCoefficientA * ((muSpeedA * muSpeedA)-1.0);
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muCoefficientA = muCoefficientA + 1.0;
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muCoefficientA = muCoefficientA / (muSpeedA * muSpeedA);
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}
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muNewSpeed = muSpeedA * (muSpeedA-1);
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muNewSpeed = muNewSpeed + fabs(inputSample*release)+fastest;
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muSpeedA = muNewSpeed / muSpeedA;
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lastCoefficientA = pow(muCoefficientA,2);
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mergedCoefficients = lastCoefficientB;
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mergedCoefficients += lastCoefficientA;
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lastCoefficientA *= (1.0-lastCorrection);
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lastCoefficientA += (muCoefficientA * lastCorrection);
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lastCoefficientB = lastCoefficientA;
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break;
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case 2:
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if (fabs(inputSample) > threshold)
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{
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if (inputSample > 0.0) {
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inputSample = (inputSample * voicing) + (targetthreshold * (1.0-voicing));
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threshold = fabs(inputSample);
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} else {
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inputSample = (inputSample * voicing) - (targetthreshold * (1.0-voicing));
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threshold = fabs(inputSample);
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}
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muVary = targetthreshold / fabs(inputSample);
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muAttack = sqrt(fabs(muSpeedB));
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muCoefficientB = muCoefficientB * (muAttack-1);
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if (muVary < threshold)
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{
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muCoefficientB = muCoefficientB + targetthreshold;
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}
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else
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{
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muCoefficientB = muCoefficientB + muVary;
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}
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muCoefficientB = muCoefficientB / muAttack;
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}
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else
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{
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threshold = targetthreshold;
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muCoefficientB = muCoefficientB * ((muSpeedB * muSpeedB)-1.0);
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muCoefficientB = muCoefficientB + 1.0;
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muCoefficientB = muCoefficientB / (muSpeedB * muSpeedB);
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}
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muNewSpeed = muSpeedB * (muSpeedB-1);
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muNewSpeed = muNewSpeed + fabs(inputSample*release)+fastest;
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muSpeedB = muNewSpeed / muSpeedB;
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lastCoefficientA = pow(muCoefficientB,2);
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mergedCoefficients = lastCoefficientB;
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mergedCoefficients += lastCoefficientA;
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lastCoefficientA *= (1.0-lastCorrection);
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lastCoefficientA += (muCoefficientB * lastCorrection);
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lastCoefficientB = lastCoefficientA;
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break;
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case 3:
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if (fabs(inputSample) > threshold)
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{
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if (inputSample > 0.0) {
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inputSample = (inputSample * voicing) + (targetthreshold * (1.0-voicing));
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threshold = fabs(inputSample);
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} else {
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inputSample = (inputSample * voicing) - (targetthreshold * (1.0-voicing));
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threshold = fabs(inputSample);
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}
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muVary = targetthreshold / fabs(inputSample);
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muAttack = sqrt(fabs(muSpeedC));
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muCoefficientC = muCoefficientC * (muAttack-1);
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if (muVary < threshold)
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{
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muCoefficientC = muCoefficientC + targetthreshold;
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}
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else
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{
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muCoefficientC = muCoefficientC + muVary;
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}
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muCoefficientC = muCoefficientC / muAttack;
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}
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else
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{
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threshold = targetthreshold;
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muCoefficientC = muCoefficientC * ((muSpeedC * muSpeedC)-1.0);
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muCoefficientC = muCoefficientC + 1.0;
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muCoefficientC = muCoefficientC / (muSpeedC * muSpeedC);
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}
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muNewSpeed = muSpeedC * (muSpeedC-1);
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muNewSpeed = muNewSpeed + fabs(inputSample*release)+fastest;
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muSpeedC = muNewSpeed / muSpeedC;
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lastCoefficientA = pow(muCoefficientC,2);
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mergedCoefficients = lastCoefficientB;
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mergedCoefficients += lastCoefficientA;
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lastCoefficientA *= (1.0-lastCorrection);
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lastCoefficientA += (muCoefficientC * lastCorrection);
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lastCoefficientB = lastCoefficientA;
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break;
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}
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count++;
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//applied compression with vari-vari-µ-µ-µ-µ-µ-µ-is-the-kitten-song o/~
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//applied gain correction to control output level- tends to constrain sound rather than inflate it
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if (fpFlip) {
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if (fabs(inputSample) > thresholdB)
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{
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if (inputSample > 0.0) {
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inputSample = (inputSample * voicing) + (targetthreshold * (1.0-voicing));
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thresholdB = fabs(inputSample);
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} else {
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inputSample = (inputSample * voicing) - (targetthreshold * (1.0-voicing));
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thresholdB = fabs(inputSample);
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}
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muVary = targetthreshold / fabs(inputSample);
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muAttack = sqrt(fabs(muSpeedD));
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muCoefficientD = muCoefficientD * (muAttack-1.0);
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if (muVary < thresholdB)
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{
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muCoefficientD = muCoefficientD + targetthreshold;
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}
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else
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{
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muCoefficientD = muCoefficientD + muVary;
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}
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muCoefficientD = muCoefficientD / muAttack;
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}
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else
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{
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thresholdB = targetthreshold;
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muCoefficientD = muCoefficientD * ((muSpeedD * muSpeedD)-1.0);
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muCoefficientD = muCoefficientD + 1.0;
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muCoefficientD = muCoefficientD / (muSpeedD * muSpeedD);
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}
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muNewSpeed = muSpeedD * (muSpeedD-1);
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muNewSpeed = muNewSpeed + fabs(inputSample*release)+fastest;
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muSpeedD = muNewSpeed / muSpeedD;
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lastCoefficientC = pow(muCoefficientE,2);
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mergedCoefficients += lastCoefficientD;
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mergedCoefficients += lastCoefficientC;
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lastCoefficientC *= (1.0-lastCorrection);
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lastCoefficientC += (muCoefficientD * lastCorrection);
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lastCoefficientD = lastCoefficientC;
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} else {
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if (fabs(inputSample) > thresholdB)
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{
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if (inputSample > 0.0) {
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inputSample = (inputSample * voicing) + (targetthreshold * (1.0-voicing));
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thresholdB = fabs(inputSample);
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} else {
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inputSample = (inputSample * voicing) - (targetthreshold * (1.0-voicing));
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thresholdB = fabs(inputSample);
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}
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muVary = targetthreshold / fabs(inputSample);
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muAttack = sqrt(fabs(muSpeedE));
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muCoefficientE = muCoefficientE * (muAttack-1.0);
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if (muVary < thresholdB)
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{
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muCoefficientE = muCoefficientE + targetthreshold;
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}
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else
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{
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muCoefficientE = muCoefficientE + muVary;
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}
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muCoefficientE = muCoefficientE / muAttack;
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}
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else
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{
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thresholdB = targetthreshold;
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muCoefficientE = muCoefficientE * ((muSpeedE * muSpeedE)-1.0);
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muCoefficientE = muCoefficientE + 1.0;
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muCoefficientE = muCoefficientE / (muSpeedE * muSpeedE);
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}
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muNewSpeed = muSpeedE * (muSpeedE-1);
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muNewSpeed = muNewSpeed + fabs(inputSample*release)+fastest;
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muSpeedE = muNewSpeed / muSpeedE;
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lastCoefficientC = pow(muCoefficientE,2);
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mergedCoefficients += lastCoefficientD;
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mergedCoefficients += lastCoefficientC;
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lastCoefficientC *= (1.0-lastCorrection);
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lastCoefficientC += (muCoefficientE * lastCorrection);
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lastCoefficientD = lastCoefficientC;
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}
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mergedCoefficients *= 0.25;
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inputSample *= mergedCoefficients;
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if (outMakeupGain != 1.0) inputSample = inputSample * outMakeupGain;
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fpFlip = !fpFlip;
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if (wet < 1.0) {
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inputSample = (inputSample * wet) + (drySample * (1.0-wet));
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}
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if (inputSample > 0.999) inputSample = 0.999;
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if (inputSample < -0.999) inputSample = -0.999;
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//iron bar clip comes after the dry/wet: alternate way to clean things up
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//begin 32 bit floating point dither
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int expon; frexpf((float)inputSample, &expon);
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fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
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inputSample += static_cast<int32_t>(fpd) * 5.960464655174751e-36L * pow(2,expon+62);
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//end 32 bit floating point dither
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*destP = inputSample;
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sourceP += inNumChannels; destP += inNumChannels;
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}
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}
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