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560 lines
24 KiB
C++
Executable file
560 lines
24 KiB
C++
Executable file
/*
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* File: TripleSpread.cpp
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*
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* Version: 1.0
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*
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* Created: 10/2/20
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*
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* Copyright: Copyright © 2020 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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TripleSpread.cpp
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=============================================================================*/
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#include "TripleSpread.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(TripleSpread)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// TripleSpread::TripleSpread
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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TripleSpread::TripleSpread(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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SetParameter(kParam_Three, kDefaultValue_ParamThree );
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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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// TripleSpread::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult TripleSpread::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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// TripleSpread::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult TripleSpread::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 = -1.0;
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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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case kParam_Three:
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AUBase::FillInParameterName (outParameterInfo, kParameterThreeName, 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_ParamThree;
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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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// TripleSpread::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult TripleSpread::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 TripleSpread::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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// TripleSpread::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult TripleSpread::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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// TripleSpread::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult TripleSpread::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 ____TripleSpreadEffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// TripleSpread::TripleSpreadKernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult TripleSpread::Reset(AudioUnitScope inScope, AudioUnitElement inElement)
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{
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for (int count = 0; count < 131074; count++) {pL[count] = 0; pR[count] = 0;}
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for (int count = 0; count < 257; count++) {
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offsetL[count] = 0; pastzeroL[count] = 0; previousL[count] = 0; thirdL[count] = 0; fourthL[count] = 0;
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offsetR[count] = 0; pastzeroR[count] = 0; previousR[count] = 0; thirdR[count] = 0; fourthR[count] = 0;
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}
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crossesL = 0;
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realzeroesL = 0;
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tempL = 0;
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lasttempL = 0;
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thirdtempL = 0;
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fourthtempL = 0;
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sincezerocrossL = 0;
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airPrevL = 0.0;
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airEvenL = 0.0;
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airOddL = 0.0;
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airFactorL = 0.0;
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positionL = 0.0;
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splicingL = false;
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crossesR = 0;
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realzeroesR = 0;
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tempR = 0;
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lasttempR = 0;
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thirdtempR = 0;
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fourthtempR = 0;
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sincezerocrossR = 0;
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airPrevR = 0.0;
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airEvenR = 0.0;
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airOddR = 0.0;
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airFactorR = 0.0;
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positionR = 0.0;
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splicingR = false;
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gcount = 0;
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lastwidth = 16386;
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flip = false;
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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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// TripleSpread::ProcessBufferLists
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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OSStatus TripleSpread::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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Float64 speed = GetParameter( kParam_One )*0.041666666666667;
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SInt32 width = (SInt32)(65536-((1-pow(1-GetParameter( kParam_Two ),2))*65530.0));
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Float64 bias = pow(GetParameter( kParam_Two ),3);
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Float64 wet = GetParameter( kParam_Three );
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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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double drySampleL = inputSampleL;
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double drySampleR = inputSampleR;
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airFactorL = airPrevL - inputSampleL;
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if (flip) {airEvenL += airFactorL; airOddL -= airFactorL; airFactorL = airEvenL;}
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else {airOddL += airFactorL; airEvenL -= airFactorL; airFactorL = airOddL;}
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airOddL = (airOddL - ((airOddL - airEvenL)/256.0)) / 1.0001;
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airEvenL = (airEvenL - ((airEvenL - airOddL)/256.0)) / 1.0001;
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airPrevL = inputSampleL;
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inputSampleL += airFactorL;
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airFactorR = airPrevR - inputSampleR;
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if (flip) {airEvenR += airFactorR; airOddR -= airFactorR; airFactorR = airEvenR;}
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else {airOddR += airFactorR; airEvenR -= airFactorR; airFactorR = airOddR;}
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airOddR = (airOddR - ((airOddR - airEvenR)/256.0)) / 1.0001;
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airEvenR = (airEvenR - ((airEvenR - airOddR)/256.0)) / 1.0001;
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airPrevR = inputSampleR;
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inputSampleR += airFactorR;
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flip = !flip;
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//air, compensates for loss of highs of interpolation
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if (lastwidth != width){crossesL = 0; realzeroesL = 0; crossesR = 0; realzeroesR = 0; lastwidth = width;}
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//global: changing this resets both channels
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gcount++;
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if (gcount < 0 || gcount > width) {gcount = 0;}
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int count = gcount;
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int countone = count-1;
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int counttwo = count-2;
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while (count < 0){count += width;}
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while (countone < 0){countone += width;}
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while (counttwo < 0){counttwo += width;}
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while (count > width){count -= width;} //this can only happen with very insane variables
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while (countone > width){countone -= width;}
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while (counttwo > width){counttwo -= width;}
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//yay sanity checks
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//now we have counts zero, one, two, none of which have sanity checked values
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//we are tracking most recent samples and must SUBTRACT.
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//this is a wrap on the overall buffers, so count, one and two are also common to both channels
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pL[count+width] = pL[count] = (int)((inputSampleL*8388352.0));
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pR[count+width] = pR[count] = (int)((inputSampleR*8388352.0));
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//double buffer -8388352 to 8388352 is equal to 24 bit linear space
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if ((pL[countone] > 0 && pL[count] < 0)||(pL[countone] < 0 && pL[count] > 0)) //source crossed zero
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{
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crossesL++;
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realzeroesL++;
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if (crossesL > 256) {crossesL = 0;} //wrap crosses to keep adding new crosses
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if (realzeroesL > 256) {realzeroesL = 256;} //don't wrap realzeroes, full buffer, use all
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offsetL[crossesL] = count;
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pastzeroL[crossesL] = pL[count];
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previousL[crossesL] = pL[countone];
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thirdL[crossesL] = pL[counttwo];
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//we load the zero crosses register with crosses to examine
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} //we just put in a source zero cross in the registry
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if ((pR[countone] > 0 && pR[count] < 0)||(pR[countone] < 0 && pR[count] > 0)) //source crossed zero
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{
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crossesR++;
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realzeroesR++;
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if (crossesR > 256) {crossesR = 0;} //wrap crosses to keep adding new crosses
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if (realzeroesR > 256) {realzeroesR = 256;} //don't wrap realzeroes, full buffer, use all
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offsetR[crossesR] = count;
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pastzeroR[crossesR] = pR[count];
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previousR[crossesR] = pR[countone];
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thirdR[crossesR] = pR[counttwo];
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//we load the zero crosses register with crosses to examine
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} //we just put in a source zero cross in the registry
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//in this we don't update count at all, so we can run them one after another because this is
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//feeding the system, not tracking the output of two parallel but non-matching output taps
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positionL -= speed; //this is individual to each channel!
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if (positionL > width) { //we just caught up to the buffer end
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if (realzeroesL > 0) { //we just caught up to the buffer end with zero crosses in the bin
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positionL = 0;
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double diff = 99999999.0;
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int best = 0; //these can be local, I think
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int scan;
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for(scan = (realzeroesL-1); scan >= 0; scan--) {
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int scanone = scan + crossesL;
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if (scanone > 256){scanone -= 256;}
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//try to track the real most recent ones more closely
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double howdiff = (double)((tempL - pastzeroL[scanone]) + (lasttempL - previousL[scanone]) + (thirdtempL - thirdL[scanone]) + (fourthtempL - fourthL[scanone]));
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//got difference factor between things
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howdiff -= (double)(scan*bias);
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//try to bias in favor of more recent crosses
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if (howdiff < diff) {diff = howdiff; best = scanone;}
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} //now we have 'best' as the closest match to the current rate of zero cross and positioning- a splice.
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positionL = offsetL[best]-sincezerocrossL;
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crossesL = 0;
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realzeroesL = 0;
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splicingL = true; //we just kicked the delay tap back, changing positionL
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} else { //we just caught up to the buffer end with no crosses- glitch speeds.
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positionL -= width;
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crossesL = 0;
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realzeroesL = 0;
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splicingL = true; //so, hard splice it.
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}
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}
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if (positionL < 0) { //we just caught up to the dry tap.
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if (realzeroesL > 0) { //we just caught up to the dry tap with zero crosses in the bin
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positionL = 0;
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double diff = 99999999.0;
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int best = 0; //these can be local, I think
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int scan;
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for(scan = (realzeroesL-1); scan >= 0; scan--) {
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int scanone = scan + crossesL;
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if (scanone > 256){scanone -= 256;}
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//try to track the real most recent ones more closely
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double howdiff = (double)((tempL - pastzeroL[scanone]) + (lasttempL - previousL[scanone]) + (thirdtempL - thirdL[scanone]) + (fourthtempL - fourthL[scanone]));
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//got difference factor between things
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howdiff -= (double)(scan*bias);
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//try to bias in favor of more recent crosses
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if (howdiff < diff) {diff = howdiff; best = scanone;}
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} //now we have 'best' as the closest match to the current rate of zero cross and positioning- a splice.
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positionL = offsetL[best]-sincezerocrossL;
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crossesL = 0;
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realzeroesL = 0;
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splicingL = true; //we just kicked the delay tap back, changing positionL
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} else { //we just caught up to the dry tap with no crosses- glitch speeds.
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positionL += width;
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crossesL = 0;
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realzeroesL = 0;
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splicingL = true; //so, hard splice it.
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}
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}
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positionR += speed; //this is individual to each channel and inverted for R!
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if (positionR > width) { //we just caught up to the buffer end
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if (realzeroesR > 0) { //we just caught up to the buffer end with zero crosses in the bin
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positionR = 0;
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double diff = 99999999.0;
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int best = 0; //these can be local, I think
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int scan;
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for(scan = (realzeroesR-1); scan >= 0; scan--) {
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int scanone = scan + crossesR;
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if (scanone > 256){scanone -= 256;}
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//try to track the real most recent ones more closely
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double howdiff = (double)((tempR - pastzeroR[scanone]) + (lasttempR - previousR[scanone]) + (thirdtempR - thirdR[scanone]) + (fourthtempR - fourthR[scanone]));
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//got difference factor between things
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howdiff -= (double)(scan*bias);
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//try to bias in favor of more recent crosses
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if (howdiff < diff) {diff = howdiff; best = scanone;}
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} //now we have 'best' as the closest match to the current rate of zero cross and positioning- a splice.
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positionR = offsetR[best]-sincezerocrossR;
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crossesR = 0;
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realzeroesR = 0;
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splicingR = true; //we just kicked the delay tap back, changing positionL
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} else { //we just caught up to the buffer end with no crosses- glitch speeds.
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positionR -= width;
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crossesR = 0;
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realzeroesR = 0;
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splicingR = true; //so, hard splice it.
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}
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}
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if (positionR < 0) { //we just caught up to the dry tap.
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if (realzeroesR > 0) { //we just caught up to the dry tap with zero crosses in the bin
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positionR = 0;
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double diff = 99999999.0;
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int best = 0; //these can be local, I think
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int scan;
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for(scan = (realzeroesR-1); scan >= 0; scan--) {
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int scanone = scan + crossesR;
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if (scanone > 256){scanone -= 256;}
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//try to track the real most recent ones more closely
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double howdiff = (double)((tempR - pastzeroR[scanone]) + (lasttempR - previousR[scanone]) + (thirdtempR - thirdR[scanone]) + (fourthtempR - fourthR[scanone]));
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//got difference factor between things
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howdiff -= (double)(scan*bias);
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//try to bias in favor of more recent crosses
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if (howdiff < diff) {diff = howdiff; best = scanone;}
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} //now we have 'best' as the closest match to the current rate of zero cross and positioning- a splice.
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positionR = offsetR[best]-sincezerocrossR;
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crossesR = 0;
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realzeroesR = 0;
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splicingR = true; //we just kicked the delay tap back, changing positionL
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} else { //we just caught up to the dry tap with no crosses- glitch speeds.
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positionR += width;
|
|
crossesR = 0;
|
|
realzeroesR = 0;
|
|
splicingR = true; //so, hard splice it.
|
|
}
|
|
}
|
|
|
|
|
|
count = gcount - (int)floor(positionL);
|
|
//we go back because the buffer goes forward this time
|
|
countone = count+1;
|
|
counttwo = count+2;
|
|
//now we have counts zero, one, two, none of which have sanity checked values
|
|
//we are interpolating, we ADD
|
|
while (count < 0){count += width;}
|
|
while (countone < 0){countone += width;}
|
|
while (counttwo < 0){counttwo += width;}
|
|
while (count > width){count -= width;} //this can only happen with very insane variables
|
|
while (countone > width){countone -= width;}
|
|
while (counttwo > width){counttwo -= width;}
|
|
|
|
//here's where we do our shift against the rotating buffer
|
|
tempL = 0;
|
|
tempL += (int)(pL[count] * (1-(positionL-floor(positionL)))); //less as value moves away from .0
|
|
tempL += pL[count+1]; //we can assume always using this in one way or another?
|
|
tempL += (int)(pL[count+2] * (positionL-floor(positionL))); //greater as value moves away from .0
|
|
tempL -= (int)(((pL[count]-pL[count+1])-(pL[count+1]-pL[count+2]))/50); //interpolation hacks 'r us
|
|
tempL /= 2; //gotta make temp be the same level scale as buffer
|
|
//now we have our delay tap, which is going to do our pitch shifting
|
|
if (abs(tempL) > 8388352.0){tempL = (lasttempL + (lasttempL - thirdtempL));}
|
|
//kill ticks of bad buffer mojo by sticking with the trajectory. Ugly hack *shrug*
|
|
|
|
sincezerocrossL++;
|
|
if (sincezerocrossL < 0 || sincezerocrossL > width){sincezerocrossL = 0;} //just a sanity check
|
|
if (splicingL){tempL = (tempL + (lasttempL + (lasttempL - thirdtempL)))/2; splicingL = false;}
|
|
//do a smoother transition by taking the sample of transition and going half with it
|
|
|
|
if ((lasttempL > 0 && tempL < 0)||(lasttempL < 0 && tempL > 0)) //delay tap crossed zero
|
|
{
|
|
sincezerocrossL = 0;
|
|
} //we just restarted counting from the delay tap zero cross
|
|
|
|
count = gcount - (int)floor(positionR);
|
|
//we go back because the buffer goes forward this time
|
|
countone = count+1;
|
|
counttwo = count+2;
|
|
//now we have counts zero, one, two, none of which have sanity checked values
|
|
//we are interpolating, we ADD
|
|
while (count < 0){count += width;}
|
|
while (countone < 0){countone += width;}
|
|
while (counttwo < 0){counttwo += width;}
|
|
while (count > width){count -= width;} //this can only happen with very insane variables
|
|
while (countone > width){countone -= width;}
|
|
while (counttwo > width){counttwo -= width;}
|
|
|
|
|
|
tempR = 0;
|
|
tempR += (int)(pR[count] * (1-(positionR-floor(positionR)))); //less as value moves away from .0
|
|
tempR += pR[count+1]; //we can assume always using this in one way or another?
|
|
tempR += (int)(pR[count+2] * (positionR-floor(positionR))); //greater as value moves away from .0
|
|
tempR -= (int)(((pR[count]-pR[count+1])-(pR[count+1]-pR[count+2]))/50); //interpolation hacks 'r us
|
|
tempR /= 2; //gotta make temp be the same level scale as buffer
|
|
//now we have our delay tap, which is going to do our pitch shifting
|
|
if (abs(tempR) > 8388352.0){tempR = (lasttempR + (lasttempR - thirdtempR));}
|
|
//kill ticks of bad buffer mojo by sticking with the trajectory. Ugly hack *shrug*
|
|
|
|
sincezerocrossR++;
|
|
if (sincezerocrossR < 0 || sincezerocrossR > width){sincezerocrossR = 0;} //just a sanity check
|
|
if (splicingR){tempR = (tempR + (lasttempR + (lasttempR - thirdtempR)))/2; splicingR = false;}
|
|
//do a smoother transition by taking the sample of transition and going half with it
|
|
|
|
if ((lasttempR > 0 && tempR < 0)||(lasttempR < 0 && tempR > 0)) //delay tap crossed zero
|
|
{
|
|
sincezerocrossR = 0;
|
|
} //we just restarted counting from the delay tap zero cross
|
|
|
|
fourthtempL = thirdtempL;
|
|
thirdtempL = lasttempL;
|
|
lasttempL = tempL;
|
|
|
|
fourthtempR = thirdtempR;
|
|
thirdtempR = lasttempR;
|
|
lasttempR = tempR;
|
|
|
|
double mid = (inputSampleL + inputSampleR)*(1-wet);
|
|
double side = inputSampleL - inputSampleR;
|
|
//assign mid and side.Between these sections, you can do mid/side processing
|
|
inputSampleL = (mid+side)/2.0;
|
|
inputSampleR = (mid-side)/2.0;
|
|
//unassign mid and side
|
|
|
|
inputSampleL = ( drySampleL * (1-wet))+((double)(tempL/(8388352.0))*wet);
|
|
if (inputSampleL > 4.0) inputSampleL = 4.0;
|
|
if (inputSampleL < -4.0) inputSampleL = -4.0;
|
|
|
|
inputSampleR = ( drySampleR * (1-wet))+((double)(tempR/(8388352.0))*wet);
|
|
if (inputSampleR > 4.0) inputSampleR = 4.0;
|
|
if (inputSampleR < -4.0) inputSampleR = -4.0;
|
|
//this plugin can throw insane outputs so we'll put in a hard clip
|
|
|
|
//begin 32 bit stereo floating point dither
|
|
int expon; frexpf((float)inputSampleL, &expon);
|
|
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
|
|
inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
|
|
frexpf((float)inputSampleR, &expon);
|
|
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
|
|
inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
|
|
//end 32 bit stereo floating point dither
|
|
|
|
*outputL = inputSampleL;
|
|
*outputR = inputSampleR;
|
|
//direct stereo out
|
|
|
|
inputL += 1;
|
|
inputR += 1;
|
|
outputL += 1;
|
|
outputR += 1;
|
|
}
|
|
return noErr;
|
|
}
|
|
|