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306 lines
13 KiB
C++
Executable file
306 lines
13 KiB
C++
Executable file
/*
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* File: Inflamer.cpp
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*
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* Version: 1.0
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*
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* Created: 8/7/23
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*
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* Copyright: Copyright © 2023 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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Inflamer.cpp
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=============================================================================*/
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#include "Inflamer.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(Inflamer)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Inflamer::Inflamer
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Inflamer::Inflamer(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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// Inflamer::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Inflamer::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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// Inflamer::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Inflamer::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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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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// Inflamer::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Inflamer::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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// Inflamer::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Inflamer::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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// Inflamer::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Inflamer::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 ____InflamerEffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Inflamer::InflamerKernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void Inflamer::InflamerKernel::Reset()
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{
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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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// Inflamer::InflamerKernel::Process
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void Inflamer::InflamerKernel::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 gainControl = (GetParameter( kParam_One )*0.5)+0.05; //0.0 to 1.0
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int gainBits = 20; //start beyond maximum attenuation
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if (gainControl > 0.0) gainBits = floor(1.0 / gainControl)-2;
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if (gainBits < -2) gainBits = -2; if (gainBits > 17) gainBits = 17;
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double gain = 1.0;
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switch (gainBits)
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{
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case 17: gain = 0.0; break;
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case 16: gain = 0.0000152587890625; break;
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case 15: gain = 0.000030517578125; break;
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case 14: gain = 0.00006103515625; break;
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case 13: gain = 0.0001220703125; break;
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case 12: gain = 0.000244140625; break;
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case 11: gain = 0.00048828125; break;
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case 10: gain = 0.0009765625; break;
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case 9: gain = 0.001953125; break;
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case 8: gain = 0.00390625; break;
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case 7: gain = 0.0078125; break;
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case 6: gain = 0.015625; break;
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case 5: gain = 0.03125; break;
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case 4: gain = 0.0625; break;
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case 3: gain = 0.125; break;
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case 2: gain = 0.25; break;
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case 1: gain = 0.5; break;
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case 0: gain = 1.0; break;
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case -1: gain = 2.0; break;
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case -2: gain = 4.0; break;
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} //now we have our input trim
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int bitshiftL = 1;
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int bitshiftR = 1;
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double panControl = (GetParameter( kParam_Two )*2.0)-1.0; //-1.0 to 1.0
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double panAttenuation = (1.0-fabs(panControl));
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int panBits = 20; //start centered
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if (panAttenuation > 0.0) panBits = floor(1.0 / panAttenuation);
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if (panControl > 0.25) bitshiftL += panBits;
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if (panControl < -0.25) bitshiftR += panBits;
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if (bitshiftL < -2) bitshiftL = -2; if (bitshiftL > 17) bitshiftL = 17;
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if (bitshiftR < -2) bitshiftR = -2; if (bitshiftR > 17) bitshiftR = 17;
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double negacurve = 0.5;
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double curve = 0.5;
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switch (bitshiftL)
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{
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case 17: negacurve = 0.0; break;
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case 16: negacurve = 0.0000152587890625; break;
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case 15: negacurve = 0.000030517578125; break;
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case 14: negacurve = 0.00006103515625; break;
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case 13: negacurve = 0.0001220703125; break;
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case 12: negacurve = 0.000244140625; break;
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case 11: negacurve = 0.00048828125; break;
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case 10: negacurve = 0.0009765625; break;
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case 9: negacurve = 0.001953125; break;
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case 8: negacurve = 0.00390625; break;
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case 7: negacurve = 0.0078125; break;
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case 6: negacurve = 0.015625; break;
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case 5: negacurve = 0.03125; break;
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case 4: negacurve = 0.0625; break;
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case 3: negacurve = 0.125; break;
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case 2: negacurve = 0.25; break;
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case 1: negacurve = 0.5; break;
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case 0: negacurve = 1.0; break;
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case -1: negacurve = 2.0; break;
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case -2: negacurve = 4.0; break;
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}
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switch (bitshiftR)
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{
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case 17: curve = 0.0; break;
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case 16: curve = 0.0000152587890625; break;
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case 15: curve = 0.000030517578125; break;
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case 14: curve = 0.00006103515625; break;
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case 13: curve = 0.0001220703125; break;
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case 12: curve = 0.000244140625; break;
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case 11: curve = 0.00048828125; break;
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case 10: curve = 0.0009765625; break;
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case 9: curve = 0.001953125; break;
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case 8: curve = 0.00390625; break;
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case 7: curve = 0.0078125; break;
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case 6: curve = 0.015625; break;
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case 5: curve = 0.03125; break;
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case 4: curve = 0.0625; break;
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case 3: curve = 0.125; break;
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case 2: curve = 0.25; break;
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case 1: curve = 0.5; break;
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case 0: curve = 1.0; break;
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case -1: curve = 2.0; break;
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case -2: curve = 4.0; break;
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}
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double effectOut = GetParameter( kParam_Three );
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while (nSampleFrames-- > 0) {
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long double inputSample = *sourceP;
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if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17;
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double drySample = inputSample;
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inputSample *= gain; //input trim
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double inflamerPlus = (inputSample*2.0)-pow(inputSample,2); //+50, very much just second harmonic
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double inflamerMinus = inputSample+(pow(inputSample,3)*0.25)-((pow(inputSample,2)+pow(inputSample,4))*0.0625); //-50
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inputSample = (inflamerPlus * curve) + (inflamerMinus * negacurve);
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inputSample = (inputSample * effectOut) + (drySample * (1.0-effectOut));
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//begin 32 bit floating point dither
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int expon; frexpf((float)inputSample, &expon);
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fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
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inputSample += ((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 = inputSample;
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sourceP += inNumChannels; destP += inNumChannels;
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}
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}
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