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500 lines
18 KiB
C++
Executable file
500 lines
18 KiB
C++
Executable file
/*
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* File: Dynamics.cpp
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*
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* Version: 1.0
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*
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* Created: 8/19/22
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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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Dynamics.cpp
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=============================================================================*/
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#include "Dynamics.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(Dynamics)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Dynamics::Dynamics
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Dynamics::Dynamics(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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SetParameter(kParam_Four, kDefaultValue_ParamFour );
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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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// Dynamics::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Dynamics::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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// Dynamics::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Dynamics::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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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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case kParam_Four:
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AUBase::FillInParameterName (outParameterInfo, kParameterFourName, 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_ParamFour;
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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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// Dynamics::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Dynamics::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 Dynamics::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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// Dynamics::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Dynamics::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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// Dynamics::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Dynamics::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 ____DynamicsEffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Dynamics::DynamicsKernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Dynamics::Reset(AudioUnitScope inScope, AudioUnitElement inElement)
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{
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//begin Gate
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WasNegativeL = false;
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ZeroCrossL = 0;
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gaterollerL = 0.0;
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gateL = 0.0;
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WasNegativeR = false;
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ZeroCrossR = 0;
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gaterollerR = 0.0;
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gateR = 0.0;
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//end Gate
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//begin ButterComp
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controlAposL = 1.0;
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controlAnegL = 1.0;
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controlBposL = 1.0;
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controlBnegL = 1.0;
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targetposL = 1.0;
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targetnegL = 1.0;
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avgLA = avgLB = 0.0;
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nvgLA = nvgLB = 0.0;
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controlAposR = 1.0;
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controlAnegR = 1.0;
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controlBposR = 1.0;
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controlBnegR = 1.0;
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targetposR = 1.0;
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targetnegR = 1.0;
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avgRA = avgRB = 0.0;
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nvgRA = nvgRB = 0.0;
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//end ButterComp
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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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// Dynamics::ProcessBufferLists
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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OSStatus Dynamics::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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//begin ButterComp
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double inputgain = (pow(GetParameter( kParam_One ),5)*35)+1.0;
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double divisor = (pow(GetParameter( kParam_Two ),4) * 0.01)+0.0005;
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divisor /= overallscale;
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double remainder = divisor;
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divisor = 1.0 - divisor;
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//end ButterComp
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//begin Gate
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double onthreshold = (pow(GetParameter( kParam_Three ),3)/3)+0.00018;
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double offthreshold = onthreshold * 1.1;
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double release = 0.028331119964586;
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double absmax = 220.9;
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//speed to be compensated w.r.t sample rate
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//end Gate
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double wet = GetParameter(kParam_Four );
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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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//begin compressor
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//begin L
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inputSampleL *= inputgain;
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double inputpos = inputSampleL + 1.0;
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if (inputpos < 0.0) inputpos = 0.0;
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double outputpos = inputpos / 2.0;
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if (outputpos > 1.0) outputpos = 1.0;
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inputpos *= inputpos;
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targetposL *= divisor;
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targetposL += (inputpos * remainder);
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double calcpos = 1.0/targetposL;
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double inputneg = -inputSampleL + 1.0;
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if (inputneg < 0.0) inputneg = 0.0;
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double outputneg = inputneg / 2.0;
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if (outputneg > 1.0) outputneg = 1.0;
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inputneg *= inputneg;
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targetnegL *= divisor;
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targetnegL += (inputneg * remainder);
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double calcneg = 1.0/targetnegL;
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//now we have mirrored targets for comp
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//outputpos and outputneg go from 0 to 1
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if (inputSampleL > 0)
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{ //working on pos
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if (true == flip)
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{
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controlAposL *= divisor;
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controlAposL += (calcpos*remainder);
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} else {
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controlBposL *= divisor;
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controlBposL += (calcpos*remainder);
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}
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} else { //working on neg
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if (true == flip)
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{
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controlAnegL *= divisor;
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controlAnegL += (calcneg*remainder);
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} else {
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controlBnegL *= divisor;
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controlBnegL += (calcneg*remainder);
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}
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}
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//this causes each of the four to update only when active and in the correct 'flip'
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double totalmultiplier;
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if (true == flip) totalmultiplier = (controlAposL * outputpos) + (controlAnegL * outputneg);
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else totalmultiplier = (controlBposL * outputpos) + (controlBnegL * outputneg);
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//this combines the sides according to flip, blending relative to the input value
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inputSampleL *= totalmultiplier;
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inputSampleL /= inputgain;
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//end L
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//begin R
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inputSampleR *= inputgain;
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inputpos = inputSampleR + 1.0;
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if (inputpos < 0.0) inputpos = 0.0;
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outputpos = inputpos / 2.0;
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if (outputpos > 1.0) outputpos = 1.0;
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inputpos *= inputpos;
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targetposR *= divisor;
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targetposR += (inputpos * remainder);
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calcpos = 1.0/targetposR;
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inputneg = -inputSampleR + 1.0;
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if (inputneg < 0.0) inputneg = 0.0;
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outputneg = inputneg / 2.0;
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if (outputneg > 1.0) outputneg = 1.0;
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inputneg *= inputneg;
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targetnegR *= divisor;
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targetnegR += (inputneg * remainder);
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calcneg = 1.0/targetnegR;
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//now we have mirrored targets for comp
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//outputpos and outputneg go from 0 to 1
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if (inputSampleR > 0)
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{ //working on pos
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if (true == flip)
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{
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controlAposR *= divisor;
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controlAposR += (calcpos*remainder);
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} else {
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controlBposR *= divisor;
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controlBposR += (calcpos*remainder);
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}
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} else { //working on neg
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if (true == flip)
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{
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controlAnegR *= divisor;
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controlAnegR += (calcneg*remainder);
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} else {
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controlBnegR *= divisor;
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controlBnegR += (calcneg*remainder);
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}
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}
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//this causes each of the four to update only when active and in the correct 'flip'
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if (true == flip) totalmultiplier = (controlAposR * outputpos) + (controlAnegR * outputneg);
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else totalmultiplier = (controlBposR * outputpos) + (controlBnegR * outputneg);
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//this combines the sides according to flip, blending relative to the input value
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inputSampleR *= totalmultiplier;
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inputSampleR /= inputgain;
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//end R
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flip = !flip;
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//end compressor
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//begin Gate
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if (drySampleL > 0.0)
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{
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if (WasNegativeL == true) ZeroCrossL = absmax * 0.3;
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WasNegativeL = false;
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} else {
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ZeroCrossL += 1; WasNegativeL = true;
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}
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if (drySampleR > 0.0)
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{
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if (WasNegativeR == true) ZeroCrossR = absmax * 0.3;
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WasNegativeR = false;
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} else {
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ZeroCrossR += 1; WasNegativeR = true;
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}
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if (ZeroCrossL > absmax) ZeroCrossL = absmax;
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if (ZeroCrossR > absmax) ZeroCrossR = absmax;
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if (gateL == 0.0)
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{
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//if gate is totally silent
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if (fabs(drySampleL) > onthreshold)
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{
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if (gaterollerL == 0.0) gaterollerL = ZeroCrossL;
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else gaterollerL -= release;
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// trigger from total silence only- if we're active then signal must clear offthreshold
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}
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else gaterollerL -= release;
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} else {
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//gate is not silent but closing
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if (fabs(drySampleL) > offthreshold)
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{
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if (gaterollerL < ZeroCrossL) gaterollerL = ZeroCrossL;
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else gaterollerL -= release;
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//always trigger if gate is over offthreshold, otherwise close anyway
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}
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else gaterollerL -= release;
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}
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if (gateR == 0.0)
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{
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//if gate is totally silent
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if (fabs(drySampleR) > onthreshold)
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{
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if (gaterollerR == 0.0) gaterollerR = ZeroCrossR;
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else gaterollerR -= release;
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// trigger from total silence only- if we're active then signal must clear offthreshold
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}
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else gaterollerR -= release;
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} else {
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//gate is not silent but closing
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if (fabs(drySampleR) > offthreshold)
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{
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if (gaterollerR < ZeroCrossR) gaterollerR = ZeroCrossR;
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else gaterollerR -= release;
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//always trigger if gate is over offthreshold, otherwise close anyway
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}
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else gaterollerR -= release;
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}
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if (gaterollerL < 0.0) gaterollerL = 0.0;
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if (gaterollerR < 0.0) gaterollerR = 0.0;
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if (gaterollerL < 1.0)
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{
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gateL = gaterollerL;
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double bridgerectifier = 1-cos(fabs(inputSampleL));
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if (inputSampleL > 0) inputSampleL = (inputSampleL*gateL)+(bridgerectifier*(1.0-gateL));
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else inputSampleL = (inputSampleL*gateL)-(bridgerectifier*(1.0-gateL));
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if (gateL == 0.0) inputSampleL = 0.0;
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} else gateL = 1.0;
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if (gaterollerR < 1.0)
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{
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gateR = gaterollerR;
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double bridgerectifier = 1-cos(fabs(inputSampleR));
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if (inputSampleR > 0) inputSampleR = (inputSampleR*gateR)+(bridgerectifier*(1.0-gateR));
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else inputSampleR = (inputSampleR*gateR)-(bridgerectifier*(1.0-gateR));
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if (gateR == 0.0) inputSampleR = 0.0;
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} else gateR = 1.0;
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//end Gate
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if (wet != 1.0) {
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inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet));
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inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet));
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}
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//Dry/Wet control, defaults to the last slider
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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;
|
|
outputR += 1;
|
|
}
|
|
return noErr;
|
|
}
|
|
|