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419 lines
15 KiB
C++
419 lines
15 KiB
C++
/*
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* File: StereoEnsemble.cpp
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*
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* Version: 1.0
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*
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* Created: 2/7/22
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*
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* Copyright: Copyright © 2022 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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StereoEnsemble.cpp
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=============================================================================*/
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#include "StereoEnsemble.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(StereoEnsemble)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// StereoEnsemble::StereoEnsemble
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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StereoEnsemble::StereoEnsemble(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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// StereoEnsemble::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult StereoEnsemble::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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// StereoEnsemble::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult StereoEnsemble::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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// StereoEnsemble::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult StereoEnsemble::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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// state that plugin supports only stereo-in/stereo-out processing
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UInt32 StereoEnsemble::SupportedNumChannels(const AUChannelInfo ** outInfo)
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{
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if (outInfo != NULL)
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{
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static AUChannelInfo info;
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info.inChannels = 2;
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info.outChannels = 2;
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*outInfo = &info;
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}
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return 1;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// StereoEnsemble::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult StereoEnsemble::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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// StereoEnsemble::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult StereoEnsemble::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 ____StereoEnsembleEffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// StereoEnsemble::StereoEnsembleKernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult StereoEnsemble::Reset(AudioUnitScope inScope, AudioUnitElement inElement)
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{
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for(int count = 0; count < 7490; count++) {dA[count] = 0.0;}
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for(int count = 0; count < 7532; count++) {dB[count] = 0.0;}
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for(int count = 0; count < 5788; count++) {dC[count] = 0.0;}
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for(int count = 0; count < 5746; count++) {dD[count] = 0.0;}
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for(int count = 0; count < 4840; count++) {dE[count] = 0.0;}
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for(int count = 0; count < 4870; count++) {dF[count] = 0.0;}
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for(int count = 0; count < 3118; count++) {dG[count] = 0.0;}
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for(int count = 0; count < 3088; count++) {dH[count] = 0.0;}
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for(int count = 0; count < 2212; count++) {dI[count] = 0.0;}
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for(int count = 0; count < 2222; count++) {dJ[count] = 0.0;}
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for(int count = 0; count < 1336; count++) {dK[count] = 0.0;}
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for(int count = 0; count < 1330; count++) {dL[count] = 0.0;}
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oneA = 1;
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oneB = 1;
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oneC = 1;
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oneD = 1;
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oneE = 1;
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oneF = 1;
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oneG = 1;
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oneH = 1;
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oneI = 1;
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oneJ = 1;
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oneK = 1;
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oneL = 1;
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levelA = 0.75;
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levelB = 0.15;
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levelC = 0.15;
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levelD = 0.75;
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levelE = 0.63;
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levelF = 0.27;
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levelG = 0.27;
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levelH = 0.63;
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levelI = 0.48;
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levelJ = 0.32;
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levelK = 0.32;
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levelL = 0.48;
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for(int count = 0; count < 6; count++) {lastRefL[count] = 0.0;lastRefR[count] = 0.0;}
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cycle = 0;
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fpdL = 1.0; while (fpdL < 16386) fpdL = rand()*UINT32_MAX;
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fpdR = 1.0; while (fpdR < 16386) fpdR = rand()*UINT32_MAX;
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return noErr;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// StereoEnsemble::ProcessBufferLists
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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OSStatus StereoEnsemble::ProcessBufferLists(AudioUnitRenderActionFlags & ioActionFlags,
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const AudioBufferList & inBuffer,
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AudioBufferList & outBuffer,
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UInt32 inFramesToProcess)
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{
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Float32 * inputL = (Float32*)(inBuffer.mBuffers[0].mData);
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Float32 * inputR = (Float32*)(inBuffer.mBuffers[1].mData);
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Float32 * outputL = (Float32*)(outBuffer.mBuffers[0].mData);
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Float32 * outputR = (Float32*)(outBuffer.mBuffers[1].mData);
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UInt32 nSampleFrames = inFramesToProcess;
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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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int cycleEnd = floor(overallscale);
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if (cycleEnd < 1) cycleEnd = 1;
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if (cycleEnd > 4) cycleEnd = 4;
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//this is going to be 2 for 88.1 or 96k, 3 for silly people, 4 for 176 or 192k
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if (cycle > cycleEnd-1) cycle = cycleEnd-1; //sanity check
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double delayfactor = 0.66 + (GetParameter( kParam_One )/3.0);
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double outlevel = GetParameter( kParam_Two );
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dryL = 1.0 - (outlevel * 0.65);
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dryR = 1.0 - (outlevel * 0.65);
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maxdelayA = (int)(7481.0 * delayfactor);
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maxdelayB = (int)(7523.0 * delayfactor);
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maxdelayC = (int)(5779.0 * delayfactor);
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maxdelayD = (int)(5737.0 * delayfactor);
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maxdelayE = (int)(4831.0 * delayfactor);
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maxdelayF = (int)(4861.0 * delayfactor);
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maxdelayG = (int)(3109.0 * delayfactor);
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maxdelayH = (int)(3079.0 * delayfactor);
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maxdelayI = (int)(2203.0 * delayfactor);
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maxdelayJ = (int)(2213.0 * delayfactor);
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maxdelayK = (int)(1327.0 * delayfactor);
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maxdelayL = (int)(1321.0 * delayfactor);
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while (nSampleFrames-- > 0) {
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double inputSampleL = *inputL;
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double inputSampleR = *inputR;
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if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
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if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
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cycle++;
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if (cycle == cycleEnd) { //hit the end point and we do a ensemble sample
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double drySampleL = inputSampleL;
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double drySampleR = inputSampleR;
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double outL = 0.0;
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double outR = 0.0;
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double temp = 0.0;
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dA[oneA] = inputSampleL;
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oneA--; if (oneA < 0 || oneA > maxdelayA) {oneA = maxdelayA;} temp = dA[oneA];
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outL += (temp*levelA);
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dB[oneB] = inputSampleR;
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oneB--; if (oneB < 0 || oneB > maxdelayB) {oneB = maxdelayB;} temp += dB[oneB];
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outR += (temp*levelB);
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dC[oneC] = inputSampleL;
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oneC--; if (oneC < 0 || oneC > maxdelayC) {oneC = maxdelayC;} temp = dC[oneC];
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outL += (temp*levelC);
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dD[oneD] = inputSampleR;
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oneD--; if (oneD < 0 || oneD > maxdelayD) {oneD = maxdelayD;} temp += dD[oneD];
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outR += (temp*levelD);
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dE[oneE] = inputSampleL;
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oneE--; if (oneE < 0 || oneE > maxdelayE) {oneE = maxdelayE;} temp = dE[oneE];
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outL += (temp*levelE);
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dF[oneF] = inputSampleR;
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oneF--; if (oneF < 0 || oneF > maxdelayF) {oneF = maxdelayF;} temp += dF[oneF];
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outR += (temp*levelF);
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dG[oneG] = inputSampleL;
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oneG--; if (oneG < 0 || oneG > maxdelayG) {oneG = maxdelayG;} temp = dG[oneG];
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outL += (temp*levelG);
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dH[oneH] = inputSampleR;
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oneH--; if (oneH < 0 || oneH > maxdelayH) {oneH = maxdelayH;} temp += dH[oneH];
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outR += (temp*levelH);
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dI[oneI] = inputSampleL;
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oneI--; if (oneI < 0 || oneI > maxdelayI) {oneI = maxdelayI;} temp = dI[oneI];
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outL += (temp*levelI);
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dJ[oneJ] = inputSampleR;
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oneJ--; if (oneJ < 0 || oneJ > maxdelayJ) {oneJ = maxdelayJ;} temp += dJ[oneJ];
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outR += (temp*levelJ);
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dK[oneK] = inputSampleL;
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oneK--; if (oneK < 0 || oneK > maxdelayK) {oneK = maxdelayK;} temp = dK[oneK];
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outL += (temp*levelK);
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dL[oneL] = inputSampleR;
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oneL--; if (oneL < 0 || oneL > maxdelayL) {oneL = maxdelayL;} temp += dL[oneL];
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outR += (temp*levelL);
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inputSampleL = (outL * outlevel) + (drySampleL * dryL);
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inputSampleR = (outR * outlevel) + (drySampleR * dryR);
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if (cycleEnd == 4) {
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lastRefL[0] = lastRefL[4]; //start from previous last
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lastRefL[2] = (lastRefL[0] + inputSampleL)/2; //half
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lastRefL[1] = (lastRefL[0] + lastRefL[2])/2; //one quarter
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lastRefL[3] = (lastRefL[2] + inputSampleL)/2; //three quarters
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lastRefL[4] = inputSampleL; //full
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lastRefR[0] = lastRefR[4]; //start from previous last
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lastRefR[2] = (lastRefR[0] + inputSampleR)/2; //half
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lastRefR[1] = (lastRefR[0] + lastRefR[2])/2; //one quarter
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lastRefR[3] = (lastRefR[2] + inputSampleR)/2; //three quarters
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lastRefR[4] = inputSampleR; //full
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}
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if (cycleEnd == 3) {
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lastRefL[0] = lastRefL[3]; //start from previous last
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lastRefL[2] = (lastRefL[0]+lastRefL[0]+inputSampleL)/3; //third
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lastRefL[1] = (lastRefL[0]+inputSampleL+inputSampleL)/3; //two thirds
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lastRefL[3] = inputSampleL; //full
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lastRefR[0] = lastRefR[3]; //start from previous last
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lastRefR[2] = (lastRefR[0]+lastRefR[0]+inputSampleR)/3; //third
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lastRefR[1] = (lastRefR[0]+inputSampleR+inputSampleR)/3; //two thirds
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lastRefR[3] = inputSampleR; //full
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}
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if (cycleEnd == 2) {
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lastRefL[0] = lastRefL[2]; //start from previous last
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lastRefL[1] = (lastRefL[0] + inputSampleL)/2; //half
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lastRefL[2] = inputSampleL; //full
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lastRefR[0] = lastRefR[2]; //start from previous last
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lastRefR[1] = (lastRefR[0] + inputSampleR)/2; //half
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lastRefR[2] = inputSampleR; //full
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}
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if (cycleEnd == 1) {
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lastRefL[0] = inputSampleL;
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lastRefR[0] = inputSampleR;
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}
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cycle = 0; //reset
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inputSampleL = lastRefL[cycle];
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inputSampleR = lastRefR[cycle];
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} else {
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inputSampleL = lastRefL[cycle];
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inputSampleR = lastRefR[cycle];
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//we are going through our references now
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}
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//begin 32 bit stereo floating point dither
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int expon; frexpf((float)inputSampleL, &expon);
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fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
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inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
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frexpf((float)inputSampleR, &expon);
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fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
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inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
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//end 32 bit stereo floating point dither
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*outputL = inputSampleL;
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*outputR = inputSampleR;
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//direct stereo out
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inputL += 1;
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inputR += 1;
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outputL += 1;
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outputR += 1;
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}
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return noErr;
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}
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