mirror of
https://github.com/airwindows/airwindows.git
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290 lines
12 KiB
C++
Executable file
290 lines
12 KiB
C++
Executable file
/*
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* File: DubPlate.cpp
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*
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* Version: 1.0
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*
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* Created: 2/25/25
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*
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* Copyright: Copyright © 2025 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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DubPlate.cpp
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=============================================================================*/
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#include "DubPlate.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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AUDIOCOMPONENT_ENTRY(AUBaseFactory, DubPlate)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// DubPlate::DubPlate
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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DubPlate::DubPlate(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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#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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// DubPlate::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult DubPlate::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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// DubPlate::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult DubPlate::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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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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// DubPlate::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult DubPlate::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 DubPlate::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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// DubPlate::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult DubPlate::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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// DubPlate::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult DubPlate::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 ____DubPlateEffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// DubPlate::DubPlateKernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult DubPlate::Reset(AudioUnitScope inScope, AudioUnitElement inElement)
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{
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iirA = 0.0;
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iirB = 0.0;
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iirC = 0.0;
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iirD = 0.0;
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fpFlip = true;
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lastSinewAL = 0.0;
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lastSinewAR = 0.0;
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lastSinewBL = 0.0;
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lastSinewBR = 0.0;
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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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// DubPlate::ProcessBufferLists
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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OSStatus DubPlate::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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double rangescale = 0.1 / overallscale;
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double iirSide = 0.287496 * rangescale;
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double iirMid = 0.20123 * rangescale;
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double threshSinewA = 0.15 / overallscale;
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double threshSinewB = 0.127 / overallscale;
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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 mid = inputSampleL + inputSampleR;
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double side = inputSampleL - inputSampleR;
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//assign mid and side.Between these sections, you can do mid/side processing
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double temp = side;
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double correction;
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if (fpFlip) {
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iirA = (iirA * (1.0 - iirSide)) + (temp * iirSide); temp -= iirA; correction = iirA;
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} else {
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iirB = (iirB * (1.0 - iirSide)) + (temp * iirSide); temp -= iirB; correction = iirB;
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}
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iirC = (iirC * (1.0 - iirSide)) + (temp * iirSide); temp -= iirC; correction += (iirC * 0.162);
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side -= sin(correction);
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fpFlip = !fpFlip;
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iirD = (iirD * (1.0 - iirMid)) + (mid * iirMid);
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mid -= sin(iirD);
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//gonna cut those lows a hair
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inputSampleL = (mid+side)/2.0;
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inputSampleR = (mid-side)/2.0;
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//unassign mid and side
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temp = inputSampleL;
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double sinew = threshSinewA * cos(lastSinewAL*lastSinewAL);
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if (inputSampleL - lastSinewAL > sinew) temp = lastSinewAL + sinew;
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if (-(inputSampleL - lastSinewAL) > sinew) temp = lastSinewAL - sinew;
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lastSinewAL = temp;
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if (lastSinewAL > 1.0) lastSinewAL = 1.0;
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if (lastSinewAL < -1.0) lastSinewAL = -1.0;
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inputSampleL = (inputSampleL * 0.5)+(lastSinewAL * 0.5);
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sinew = threshSinewB * cos(lastSinewBL*lastSinewBL);
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if (inputSampleL - lastSinewBL > sinew) temp = lastSinewBL + sinew;
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if (-(inputSampleL - lastSinewBL) > sinew) temp = lastSinewBL - sinew;
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lastSinewBL = temp;
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if (lastSinewBL > 1.0) lastSinewBL = 1.0;
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if (lastSinewBL < -1.0) lastSinewBL = -1.0;
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inputSampleL = (inputSampleL * 0.414)+(lastSinewBL * 0.586);
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temp = inputSampleR;
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sinew = threshSinewA * cos(lastSinewAR*lastSinewAR);
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if (inputSampleR - lastSinewAR > sinew) temp = lastSinewAR + sinew;
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if (-(inputSampleR - lastSinewAR) > sinew) temp = lastSinewAR - sinew;
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lastSinewAR = temp;
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if (lastSinewAR > 1.0) lastSinewAR = 1.0;
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if (lastSinewAR < -1.0) lastSinewAR = -1.0;
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inputSampleR = (inputSampleR * 0.5)+(lastSinewAR * 0.5);
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sinew = threshSinewB * cos(lastSinewBR*lastSinewBR);
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if (inputSampleR - lastSinewBR > sinew) temp = lastSinewBR + sinew;
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if (-(inputSampleR - lastSinewBR) > sinew) temp = lastSinewBR - sinew;
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lastSinewBR = temp;
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if (lastSinewBR > 1.0) lastSinewBR = 1.0;
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if (lastSinewBR < -1.0) lastSinewBR = -1.0;
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inputSampleR = (inputSampleR * 0.414)+(lastSinewBR * 0.586);
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//run Sinew to stop excess slews, two layers to make it more audible
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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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