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https://github.com/airwindows/airwindows.git
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322 lines
14 KiB
C++
Executable file
322 lines
14 KiB
C++
Executable file
/*
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* File: Baxandall3.cpp
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*
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* Version: 1.0
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*
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* Created: 3/21/25
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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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Baxandall3.cpp
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=============================================================================*/
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#include "Baxandall3.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(Baxandall3)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Baxandall3::Baxandall3
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Baxandall3::Baxandall3(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_A, kDefaultValue_ParamA );
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SetParameter(kParam_B, kDefaultValue_ParamB );
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SetParameter(kParam_C, kDefaultValue_ParamC );
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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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// Baxandall3::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Baxandall3::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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// Baxandall3::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Baxandall3::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_A:
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AUBase::FillInParameterName (outParameterInfo, kParameterAName, 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_ParamA;
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break;
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case kParam_B:
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AUBase::FillInParameterName (outParameterInfo, kParameterBName, 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_ParamB;
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break;
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case kParam_C:
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AUBase::FillInParameterName (outParameterInfo, kParameterCName, 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_ParamC;
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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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// Baxandall3::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Baxandall3::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 Baxandall3::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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// Baxandall3::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Baxandall3::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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// Baxandall3::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Baxandall3::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 ____Baxandall3EffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Baxandall3::Baxandall3Kernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Baxandall3::Reset(AudioUnitScope inScope, AudioUnitElement inElement)
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{
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for (int x = 0; x < bax_total; x++) {baxH[x] = 0.0;baxL[x] = 0.0;}
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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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// Baxandall3::ProcessBufferLists
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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OSStatus Baxandall3::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 inputGain = pow(GetParameter( kParam_A )*2.0,2.0);
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double trebleGain = pow(GetParameter( kParam_B )*2.0,2.0);
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double trebleFreq = ((2000.0*trebleGain)+200.0)/GetSampleRate();
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if (trebleFreq > 0.45) trebleFreq = 0.45;
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baxH[bax_freq] = trebleFreq;
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baxH[bax_reso] = 0.57735026919; //bessel second order
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double K = tan(M_PI * baxH[bax_freq]); //lowpass
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double norm = 1.0 / (1.0 + K / baxH[bax_reso] + K * K);
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baxH[bax_a0] = K * K * norm;
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baxH[bax_a1] = 2.0 * baxH[bax_a0];
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baxH[bax_a2] = baxH[bax_a0];
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baxH[bax_b1] = 2.0 * (K * K - 1.0) * norm;
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baxH[bax_b2] = (1.0 - K / baxH[bax_reso] + K * K) * norm;
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//end bax highpass
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double bassGain = pow(GetParameter( kParam_C )*2.0,2.0);
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double bassFreq = pow((1.0-GetParameter( kParam_C ))*2.0,2.0);
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bassFreq = ((2000.0*bassFreq)+200.0)/GetSampleRate();
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if (bassFreq > 0.45) bassFreq = 0.45;
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baxL[bax_freq] = bassFreq;
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baxL[bax_reso] = 0.57735026919; //bessel second order
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K = tan(M_PI * baxL[bax_freq]); //lowpass
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norm = 1.0 / (1.0 + K / baxL[bax_reso] + K * K);
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baxL[bax_a0] = K * K * norm;
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baxL[bax_a1] = 2.0 * baxL[bax_a0];
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baxL[bax_a2] = baxL[bax_a0];
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baxL[bax_b1] = 2.0 * (K * K - 1.0) * norm;
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baxL[bax_b2] = (1.0 - K / baxL[bax_reso] + K * K) * norm;
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//end bax lowpass
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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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inputSampleL = sin(fmax(fmin(inputSampleL*inputGain,M_PI_2),-M_PI_2));
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inputSampleR = sin(fmax(fmin(inputSampleR*inputGain,M_PI_2),-M_PI_2));
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//encode Console5: good cleanness
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double trebleSampleL;
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double trebleSampleR;
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double bassSampleL;
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double bassSampleR;
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if (flip) {
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trebleSampleL = (inputSampleL * baxH[bax_a0]) + baxH[bax_sLA1];
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baxH[bax_sLA1] = (inputSampleL * baxH[bax_a1]) - (trebleSampleL * baxH[bax_b1]) + baxH[bax_sLA2];
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baxH[bax_sLA2] = (inputSampleL * baxH[bax_a2]) - (trebleSampleL * baxH[bax_b2]);
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trebleSampleL = inputSampleL - trebleSampleL;
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trebleSampleR = (inputSampleR * baxH[bax_a0]) + baxH[bax_sRA1];
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baxH[bax_sRA1] = (inputSampleR * baxH[bax_a1]) - (trebleSampleR * baxH[bax_b1]) + baxH[bax_sRA2];
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baxH[bax_sRA2] = (inputSampleR * baxH[bax_a2]) - (trebleSampleR * baxH[bax_b2]);
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trebleSampleR = inputSampleR - trebleSampleR;
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bassSampleL = (inputSampleL * baxL[bax_a0]) + baxL[bax_sLA1];
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baxL[bax_sLA1] = (inputSampleL * baxL[bax_a1]) - (bassSampleL * baxL[bax_b1]) + baxL[bax_sLA2];
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baxL[bax_sLA2] = (inputSampleL * baxL[bax_a2]) - (bassSampleL * baxL[bax_b2]);
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bassSampleR = (inputSampleR * baxL[bax_a0]) + baxL[bax_sRA1];
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baxL[bax_sRA1] = (inputSampleR * baxL[bax_a1]) - (bassSampleR * baxL[bax_b1]) + baxL[bax_sRA2];
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baxL[bax_sRA2] = (inputSampleR * baxL[bax_a2]) - (bassSampleR * baxL[bax_b2]);
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} else {
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trebleSampleL = (inputSampleL * baxH[bax_a0]) + baxH[bax_sLB1];
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baxH[bax_sLB1] = (inputSampleL * baxH[bax_a1]) - (trebleSampleL * baxH[bax_b1]) + baxH[bax_sLB2];
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baxH[bax_sLB2] = (inputSampleL * baxH[bax_a2]) - (trebleSampleL * baxH[bax_b2]);
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trebleSampleL = inputSampleL - trebleSampleL;
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trebleSampleR = (inputSampleR * baxH[bax_a0]) + baxH[bax_sRB1];
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baxH[bax_sRB1] = (inputSampleR * baxH[bax_a1]) - (trebleSampleR * baxH[bax_b1]) + baxH[bax_sRB2];
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baxH[bax_sRB2] = (inputSampleR * baxH[bax_a2]) - (trebleSampleR * baxH[bax_b2]);
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trebleSampleR = inputSampleR - trebleSampleR;
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bassSampleL = (inputSampleL * baxL[bax_a0]) + baxL[bax_sLB1];
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baxL[bax_sLB1] = (inputSampleL * baxL[bax_a1]) - (bassSampleL * baxL[bax_b1]) + baxL[bax_sLB2];
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baxL[bax_sLB2] = (inputSampleL * baxL[bax_a2]) - (bassSampleL * baxL[bax_b2]);
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bassSampleR = (inputSampleR * baxL[bax_a0]) + baxL[bax_sRB1];
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baxL[bax_sRB1] = (inputSampleR * baxL[bax_a1]) - (bassSampleR * baxL[bax_b1]) + baxL[bax_sRB2];
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baxL[bax_sRB2] = (inputSampleR * baxL[bax_a2]) - (bassSampleR * baxL[bax_b2]);
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}
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flip = !flip;
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trebleSampleL *= trebleGain;
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trebleSampleR *= trebleGain;
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bassSampleL *= bassGain;
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bassSampleR *= bassGain;
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inputSampleL = bassSampleL + trebleSampleL; //interleaved biquad
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inputSampleR = bassSampleR + trebleSampleR; //interleaved biquad
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inputSampleL = asin(fmax(fmin(inputSampleL,0.99999),-0.99999));
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inputSampleR = asin(fmax(fmin(inputSampleR,0.99999),-0.99999));
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//amplitude aspect
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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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