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304 lines
13 KiB
C++
Executable file
304 lines
13 KiB
C++
Executable file
/*
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* File: Distance3.cpp
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*
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* Version: 1.0
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*
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* Created: 2/23/24
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*
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* Copyright: Copyright © 2024 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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Distance3.cpp
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=============================================================================*/
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#include "Distance3.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(Distance3)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Distance3::Distance3
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Distance3::Distance3(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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// Distance3::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Distance3::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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// Distance3::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Distance3::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_CustomUnit;
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outParameterInfo.unitName = kParameterOneUnit;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 10.0;
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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 = 70.0;
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outParameterInfo.maxValue = 140.0;
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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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// Distance3::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Distance3::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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// Distance3::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Distance3::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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// Distance3::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Distance3::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 ____Distance3EffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Distance3::Distance3Kernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void Distance3::Distance3Kernel::Reset()
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{
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prevresultAL = lastclampAL = clampAL = changeAL = lastAL = 0.0;
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prevresultBL = lastclampBL = clampBL = changeBL = lastBL = 0.0;
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prevresultCL = lastclampCL = clampCL = changeCL = lastCL = 0.0;
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for(int count = 0; count < dscBuf+2; count++) {
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dBaL[count] = 0.0;
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dBbL[count] = 0.0;
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dBcL[count] = 0.0;
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}
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dBaPosL = 0.0;
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dBbPosL = 0.0;
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dBcPosL = 0.0;
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dBaXL = 1;
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dBbXL = 1;
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dBcXL = 1;
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fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Distance3::Distance3Kernel::Process
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void Distance3::Distance3Kernel::Process( const Float32 *inSourceP,
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Float32 *inDestP,
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UInt32 inFramesToProcess,
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UInt32 inNumChannels,
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bool &ioSilence )
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{
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UInt32 nSampleFrames = inFramesToProcess;
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const Float32 *sourceP = inSourceP;
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Float32 *destP = inDestP;
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double overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= GetSampleRate();
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double softslew = (GetParameter( kParam_One )*10.0)+0.5;
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softslew *= overallscale;
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double outslew = softslew * (1.0-(GetParameter( kParam_One )*0.0333));
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double refdB = GetParameter( kParam_Two );
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double topdB = 0.000000075 * pow(10.0,refdB/20.0) * overallscale;
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double wet = GetParameter( kParam_Three );
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while (nSampleFrames-- > 0) {
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double inputSampleL = *sourceP;
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if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpd * 1.18e-17;
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double drySampleL = inputSampleL;
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inputSampleL *= softslew;
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lastclampAL = clampAL; clampAL = inputSampleL - lastAL;
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double postfilter = changeAL = fabs(clampAL - lastclampAL);
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postfilter += (softslew / 2.0);
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inputSampleL /= outslew;
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inputSampleL += (prevresultAL * postfilter);
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inputSampleL /= (postfilter + 1.0);
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prevresultAL = inputSampleL;
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//do an IIR like thing to further squish superdistant stuff
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inputSampleL *= topdB;
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if (inputSampleL < -0.222) inputSampleL = -0.222; if (inputSampleL > 0.222) inputSampleL = 0.222;
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//Air Discontinuity A begin
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dBaL[dBaXL] = inputSampleL; dBaPosL *= 0.5; dBaPosL += fabs((inputSampleL*((inputSampleL*0.25)-0.5))*0.5);
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int dBdly = floor(dBaPosL*dscBuf);
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double dBi = (dBaPosL*dscBuf)-dBdly;
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inputSampleL = dBaL[dBaXL-dBdly +((dBaXL-dBdly < 0)?dscBuf:0)]*(1.0-dBi);
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dBdly++; inputSampleL += dBaL[dBaXL-dBdly +((dBaXL-dBdly < 0)?dscBuf:0)]*dBi;
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dBaXL++; if (dBaXL < 0 || dBaXL >= dscBuf) dBaXL = 0;
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//Air Discontinuity A end
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inputSampleL /= topdB;
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inputSampleL *= softslew;
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lastclampBL = clampBL; clampBL = inputSampleL - lastBL;
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postfilter = changeBL = fabs(clampBL - lastclampBL);
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postfilter += (softslew / 2.0);
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lastBL = inputSampleL;
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inputSampleL /= outslew;
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inputSampleL += (prevresultBL * postfilter);
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inputSampleL /= (postfilter + 1.0);
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prevresultBL = inputSampleL;
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//do an IIR like thing to further squish superdistant stuff
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inputSampleL *= topdB;
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if (inputSampleL < -0.222) inputSampleL = -0.222; if (inputSampleL > 0.222) inputSampleL = 0.222;
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//Air Discontinuity B begin
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dBbL[dBbXL] = inputSampleL; dBbPosL *= 0.5; dBbPosL += fabs((inputSampleL*((inputSampleL*0.25)-0.5))*0.5);
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dBdly = floor(dBbPosL*dscBuf); dBi = (dBbPosL*dscBuf)-dBdly;
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inputSampleL = dBbL[dBbXL-dBdly +((dBbXL-dBdly < 0)?dscBuf:0)]*(1.0-dBi);
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dBdly++; inputSampleL += dBbL[dBbXL-dBdly +((dBbXL-dBdly < 0)?dscBuf:0)]*dBi;
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dBbXL++; if (dBbXL < 0 || dBbXL >= dscBuf) dBbXL = 0;
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//Air Discontinuity B end
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inputSampleL /= topdB;
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inputSampleL *= softslew;
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lastclampCL = clampCL; clampCL = inputSampleL - lastCL;
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postfilter = changeCL = fabs(clampCL - lastclampCL);
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postfilter += (softslew / 2.0);
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lastCL = inputSampleL;
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inputSampleL /= softslew; //don't boost the final time!
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inputSampleL += (prevresultCL * postfilter);
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inputSampleL /= (postfilter + 1.0);
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prevresultCL = inputSampleL;
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//do an IIR like thing to further squish superdistant stuff
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inputSampleL *= topdB;
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if (inputSampleL < -0.222) inputSampleL = -0.222; if (inputSampleL > 0.222) inputSampleL = 0.222;
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//Air Discontinuity C begin
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dBcL[dBcXL] = inputSampleL; dBcPosL *= 0.5; dBcPosL += fabs((inputSampleL*((inputSampleL*0.25)-0.5))*0.5);
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dBdly = floor(dBcPosL*dscBuf); dBi = (dBcPosL*dscBuf)-dBdly;
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inputSampleL = dBcL[dBcXL-dBdly +((dBcXL-dBdly < 0)?dscBuf:0)]*(1.0-dBi);
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dBdly++; inputSampleL += dBcL[dBcXL-dBdly +((dBcXL-dBdly < 0)?dscBuf:0)]*dBi;
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dBcXL++; if (dBcXL < 0 || dBcXL >= dscBuf) dBcXL = 0;
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//Air Discontinuity C end
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inputSampleL /= topdB;
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if (wet < 1.0) inputSampleL = (drySampleL * (1.0-wet))+(inputSampleL*wet);
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//begin 32 bit floating point dither
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int expon; frexpf((float)inputSampleL, &expon);
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fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
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inputSampleL += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
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//end 32 bit floating point dither
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*destP = inputSampleL;
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sourceP += inNumChannels; destP += inNumChannels;
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}
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}
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