/* * File: Dynamics.cpp * * Version: 1.0 * * Created: 8/19/22 * * Copyright: Copyright © 2022 Airwindows, Airwindows uses the MIT license * * Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. ("Apple") in * consideration of your agreement to the following terms, and your use, installation, modification * or redistribution of this Apple software constitutes acceptance of these terms. If you do * not agree with these terms, please do not use, install, modify or redistribute this Apple * software. * * In consideration of your agreement to abide by the following terms, and subject to these terms, * Apple grants you a personal, non-exclusive license, under Apple's copyrights in this * original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the * Apple Software, with or without modifications, in source and/or binary forms; provided that if you * redistribute the Apple Software in its entirety and without modifications, you must retain this * notice and the following text and disclaimers in all such redistributions of the Apple Software. * Neither the name, trademarks, service marks or logos of Apple Computer, Inc. may be used to * endorse or promote products derived from the Apple Software without specific prior written * permission from Apple. Except as expressly stated in this notice, no other rights or * licenses, express or implied, are granted by Apple herein, including but not limited to any * patent rights that may be infringed by your derivative works or by other works in which the * Apple Software may be incorporated. * * The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR * IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE * OR IN COMBINATION WITH YOUR PRODUCTS. * * IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, * REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER * UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN * IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ /*============================================================================= Dynamics.cpp =============================================================================*/ #include "Dynamics.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ AUDIOCOMPONENT_ENTRY(AUBaseFactory, Dynamics) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Dynamics::Dynamics //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Dynamics::Dynamics(AudioUnit component) : AUEffectBase(component) { CreateElements(); Globals()->UseIndexedParameters(kNumberOfParameters); SetParameter(kParam_One, kDefaultValue_ParamOne ); SetParameter(kParam_Two, kDefaultValue_ParamTwo ); SetParameter(kParam_Three, kDefaultValue_ParamThree ); SetParameter(kParam_Four, kDefaultValue_ParamFour ); #if AU_DEBUG_DISPATCHER mDebugDispatcher = new AUDebugDispatcher (this); #endif } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Dynamics::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Dynamics::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Dynamics::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Dynamics::GetParameterInfo(AudioUnitScope inScope, AudioUnitParameterID inParameterID, AudioUnitParameterInfo &outParameterInfo ) { ComponentResult result = noErr; outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable | kAudioUnitParameterFlag_IsReadable; if (inScope == kAudioUnitScope_Global) { switch(inParameterID) { case kParam_One: AUBase::FillInParameterName (outParameterInfo, kParameterOneName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamOne; break; case kParam_Two: AUBase::FillInParameterName (outParameterInfo, kParameterTwoName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamTwo; break; case kParam_Three: AUBase::FillInParameterName (outParameterInfo, kParameterThreeName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamThree; break; case kParam_Four: AUBase::FillInParameterName (outParameterInfo, kParameterFourName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamFour; break; default: result = kAudioUnitErr_InvalidParameter; break; } } else { result = kAudioUnitErr_InvalidParameter; } return result; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Dynamics::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Dynamics::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // state that plugin supports only stereo-in/stereo-out processing UInt32 Dynamics::SupportedNumChannels(const AUChannelInfo ** outInfo) { if (outInfo != NULL) { static AUChannelInfo info; info.inChannels = 2; info.outChannels = 2; *outInfo = &info; } return 1; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Dynamics::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Dynamics::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // Dynamics::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Dynamics::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____DynamicsEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Dynamics::DynamicsKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Dynamics::Reset(AudioUnitScope inScope, AudioUnitElement inElement) { //begin Gate WasNegativeL = false; ZeroCrossL = 0; gaterollerL = 0.0; gateL = 0.0; WasNegativeR = false; ZeroCrossR = 0; gaterollerR = 0.0; gateR = 0.0; //end Gate //begin ButterComp controlAposL = 1.0; controlAnegL = 1.0; controlBposL = 1.0; controlBnegL = 1.0; targetposL = 1.0; targetnegL = 1.0; avgLA = avgLB = 0.0; nvgLA = nvgLB = 0.0; controlAposR = 1.0; controlAnegR = 1.0; controlBposR = 1.0; controlBnegR = 1.0; targetposR = 1.0; targetnegR = 1.0; avgRA = avgRB = 0.0; nvgRA = nvgRB = 0.0; //end ButterComp flip = false; fpdL = 1.0; while (fpdL < 16386) fpdL = rand()*UINT32_MAX; fpdR = 1.0; while (fpdR < 16386) fpdR = rand()*UINT32_MAX; return noErr; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Dynamics::ProcessBufferLists //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ OSStatus Dynamics::ProcessBufferLists(AudioUnitRenderActionFlags & ioActionFlags, const AudioBufferList & inBuffer, AudioBufferList & outBuffer, UInt32 inFramesToProcess) { Float32 * inputL = (Float32*)(inBuffer.mBuffers[0].mData); Float32 * inputR = (Float32*)(inBuffer.mBuffers[1].mData); Float32 * outputL = (Float32*)(outBuffer.mBuffers[0].mData); Float32 * outputR = (Float32*)(outBuffer.mBuffers[1].mData); UInt32 nSampleFrames = inFramesToProcess; double overallscale = 1.0; overallscale /= 44100.0; overallscale *= GetSampleRate(); //begin ButterComp double inputgain = (pow(GetParameter( kParam_One ),5)*35)+1.0; double divisor = (pow(GetParameter( kParam_Two ),4) * 0.01)+0.0005; divisor /= overallscale; double remainder = divisor; divisor = 1.0 - divisor; //end ButterComp //begin Gate double onthreshold = (pow(GetParameter( kParam_Three ),3)/3)+0.00018; double offthreshold = onthreshold * 1.1; double release = 0.028331119964586; double absmax = 220.9; //speed to be compensated w.r.t sample rate //end Gate double wet = GetParameter(kParam_Four ); while (nSampleFrames-- > 0) { double inputSampleL = *inputL; double inputSampleR = *inputR; if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17; if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17; double drySampleL = inputSampleL; double drySampleR = inputSampleR; //begin compressor //begin L inputSampleL *= inputgain; double inputpos = inputSampleL + 1.0; if (inputpos < 0.0) inputpos = 0.0; double outputpos = inputpos / 2.0; if (outputpos > 1.0) outputpos = 1.0; inputpos *= inputpos; targetposL *= divisor; targetposL += (inputpos * remainder); double calcpos = 1.0/targetposL; double inputneg = -inputSampleL + 1.0; if (inputneg < 0.0) inputneg = 0.0; double outputneg = inputneg / 2.0; if (outputneg > 1.0) outputneg = 1.0; inputneg *= inputneg; targetnegL *= divisor; targetnegL += (inputneg * remainder); double calcneg = 1.0/targetnegL; //now we have mirrored targets for comp //outputpos and outputneg go from 0 to 1 if (inputSampleL > 0) { //working on pos if (true == flip) { controlAposL *= divisor; controlAposL += (calcpos*remainder); } else { controlBposL *= divisor; controlBposL += (calcpos*remainder); } } else { //working on neg if (true == flip) { controlAnegL *= divisor; controlAnegL += (calcneg*remainder); } else { controlBnegL *= divisor; controlBnegL += (calcneg*remainder); } } //this causes each of the four to update only when active and in the correct 'flip' double totalmultiplier; if (true == flip) totalmultiplier = (controlAposL * outputpos) + (controlAnegL * outputneg); else totalmultiplier = (controlBposL * outputpos) + (controlBnegL * outputneg); //this combines the sides according to flip, blending relative to the input value inputSampleL *= totalmultiplier; inputSampleL /= inputgain; //end L //begin R inputSampleR *= inputgain; inputpos = inputSampleR + 1.0; if (inputpos < 0.0) inputpos = 0.0; outputpos = inputpos / 2.0; if (outputpos > 1.0) outputpos = 1.0; inputpos *= inputpos; targetposR *= divisor; targetposR += (inputpos * remainder); calcpos = 1.0/targetposR; inputneg = -inputSampleR + 1.0; if (inputneg < 0.0) inputneg = 0.0; outputneg = inputneg / 2.0; if (outputneg > 1.0) outputneg = 1.0; inputneg *= inputneg; targetnegR *= divisor; targetnegR += (inputneg * remainder); calcneg = 1.0/targetnegR; //now we have mirrored targets for comp //outputpos and outputneg go from 0 to 1 if (inputSampleR > 0) { //working on pos if (true == flip) { controlAposR *= divisor; controlAposR += (calcpos*remainder); } else { controlBposR *= divisor; controlBposR += (calcpos*remainder); } } else { //working on neg if (true == flip) { controlAnegR *= divisor; controlAnegR += (calcneg*remainder); } else { controlBnegR *= divisor; controlBnegR += (calcneg*remainder); } } //this causes each of the four to update only when active and in the correct 'flip' if (true == flip) totalmultiplier = (controlAposR * outputpos) + (controlAnegR * outputneg); else totalmultiplier = (controlBposR * outputpos) + (controlBnegR * outputneg); //this combines the sides according to flip, blending relative to the input value inputSampleR *= totalmultiplier; inputSampleR /= inputgain; //end R flip = !flip; //end compressor //begin Gate if (drySampleL > 0.0) { if (WasNegativeL == true) ZeroCrossL = absmax * 0.3; WasNegativeL = false; } else { ZeroCrossL += 1; WasNegativeL = true; } if (drySampleR > 0.0) { if (WasNegativeR == true) ZeroCrossR = absmax * 0.3; WasNegativeR = false; } else { ZeroCrossR += 1; WasNegativeR = true; } if (ZeroCrossL > absmax) ZeroCrossL = absmax; if (ZeroCrossR > absmax) ZeroCrossR = absmax; if (gateL == 0.0) { //if gate is totally silent if (fabs(drySampleL) > onthreshold) { if (gaterollerL == 0.0) gaterollerL = ZeroCrossL; else gaterollerL -= release; // trigger from total silence only- if we're active then signal must clear offthreshold } else gaterollerL -= release; } else { //gate is not silent but closing if (fabs(drySampleL) > offthreshold) { if (gaterollerL < ZeroCrossL) gaterollerL = ZeroCrossL; else gaterollerL -= release; //always trigger if gate is over offthreshold, otherwise close anyway } else gaterollerL -= release; } if (gateR == 0.0) { //if gate is totally silent if (fabs(drySampleR) > onthreshold) { if (gaterollerR == 0.0) gaterollerR = ZeroCrossR; else gaterollerR -= release; // trigger from total silence only- if we're active then signal must clear offthreshold } else gaterollerR -= release; } else { //gate is not silent but closing if (fabs(drySampleR) > offthreshold) { if (gaterollerR < ZeroCrossR) gaterollerR = ZeroCrossR; else gaterollerR -= release; //always trigger if gate is over offthreshold, otherwise close anyway } else gaterollerR -= release; } if (gaterollerL < 0.0) gaterollerL = 0.0; if (gaterollerR < 0.0) gaterollerR = 0.0; if (gaterollerL < 1.0) { gateL = gaterollerL; double bridgerectifier = 1-cos(fabs(inputSampleL)); if (inputSampleL > 0) inputSampleL = (inputSampleL*gateL)+(bridgerectifier*(1.0-gateL)); else inputSampleL = (inputSampleL*gateL)-(bridgerectifier*(1.0-gateL)); if (gateL == 0.0) inputSampleL = 0.0; } else gateL = 1.0; if (gaterollerR < 1.0) { gateR = gaterollerR; double bridgerectifier = 1-cos(fabs(inputSampleR)); if (inputSampleR > 0) inputSampleR = (inputSampleR*gateR)+(bridgerectifier*(1.0-gateR)); else inputSampleR = (inputSampleR*gateR)-(bridgerectifier*(1.0-gateR)); if (gateR == 0.0) inputSampleR = 0.0; } else gateR = 1.0; //end Gate if (wet != 1.0) { inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet)); inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet)); } //Dry/Wet control, defaults to the last slider //begin 32 bit stereo floating point dither int expon; frexpf((float)inputSampleL, &expon); fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5; inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62)); frexpf((float)inputSampleR, &expon); fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5; inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62)); //end 32 bit stereo floating point dither *outputL = inputSampleL; *outputR = inputSampleR; //direct stereo out inputL += 1; inputR += 1; outputL += 1; outputR += 1; } return noErr; }