/* * File: Edge.cpp * * Version: 1.0 * * Created: 1/30/22 * * 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. 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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. * */ /*============================================================================= Edge.cpp =============================================================================*/ #include "Edge.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ AUDIOCOMPONENT_ENTRY(AUBaseFactory, Edge) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Edge::Edge //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Edge::Edge(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 ); SetParameter(kParam_Five, kDefaultValue_ParamFive ); #if AU_DEBUG_DISPATCHER mDebugDispatcher = new AUDebugDispatcher (this); #endif } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Edge::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Edge::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Edge::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Edge::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; case kParam_Five: AUBase::FillInParameterName (outParameterInfo, kParameterFiveName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamFive; break; default: result = kAudioUnitErr_InvalidParameter; break; } } else { result = kAudioUnitErr_InvalidParameter; } return result; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Edge::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Edge::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Edge::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Edge::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // Edge::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Edge::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____EdgeEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Edge::EdgeKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Edge::EdgeKernel::Reset() { for (int x = 0; x < fix_total; x++) { fixA[x] = 0.0; fixB[x] = 0.0; fixC[x] = 0.0; fixD[x] = 0.0; fixE[x] = 0.0; fixF[x] = 0.0; fixG[x] = 0.0; } iirSample = 0.0; fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Edge::EdgeKernel::Process //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Edge::EdgeKernel::Process( const Float32 *inSourceP, Float32 *inDestP, UInt32 inFramesToProcess, UInt32 inNumChannels, bool &ioSilence ) { UInt32 nSampleFrames = inFramesToProcess; const Float32 *sourceP = inSourceP; Float32 *destP = inDestP; double overallscale = 1.0; overallscale /= 44100.0; overallscale *= GetSampleRate(); double inTrim = (GetParameter( kParam_One )*4.0)+0.5; double cutoff = (GetParameter( kParam_Two )*25000.0) / GetSampleRate(); if (cutoff > 0.49) cutoff = 0.49; //don't crash if run at 44.1k if (cutoff < 0.001) cutoff = 0.001; //or if cutoff's too low double iirAmount = pow(GetParameter( kParam_Three ),3)*0.5; if (iirAmount < 0.00000001) iirAmount = 0.00000001; //or if cutoff's too low iirAmount /= overallscale; //highpass is very gentle double outPad = GetParameter( kParam_Four ); double wet = GetParameter( kParam_Five ); fixG[fix_freq] = fixF[fix_freq] = fixE[fix_freq] = fixD[fix_freq] = fixC[fix_freq] = fixB[fix_freq] = fixA[fix_freq] = cutoff; fixA[fix_reso] = 4.46570214; fixB[fix_reso] = 1.51387132; fixC[fix_reso] = 0.93979296; fixD[fix_reso] = 0.70710678; fixE[fix_reso] = 0.59051105; fixF[fix_reso] = 0.52972649; fixG[fix_reso] = 0.50316379; double K = tan(M_PI * fixA[fix_freq]); //lowpass double norm = 1.0 / (1.0 + K / fixA[fix_reso] + K * K); fixA[fix_a0] = K * K * norm; fixA[fix_a1] = 2.0 * fixA[fix_a0]; fixA[fix_a2] = fixA[fix_a0]; fixA[fix_b1] = 2.0 * (K * K - 1.0) * norm; fixA[fix_b2] = (1.0 - K / fixA[fix_reso] + K * K) * norm; K = tan(M_PI * fixB[fix_freq]); norm = 1.0 / (1.0 + K / fixB[fix_reso] + K * K); fixB[fix_a0] = K * K * norm; fixB[fix_a1] = 2.0 * fixB[fix_a0]; fixB[fix_a2] = fixB[fix_a0]; fixB[fix_b1] = 2.0 * (K * K - 1.0) * norm; fixB[fix_b2] = (1.0 - K / fixB[fix_reso] + K * K) * norm; K = tan(M_PI * fixC[fix_freq]); norm = 1.0 / (1.0 + K / fixC[fix_reso] + K * K); fixC[fix_a0] = K * K * norm; fixC[fix_a1] = 2.0 * fixC[fix_a0]; fixC[fix_a2] = fixC[fix_a0]; fixC[fix_b1] = 2.0 * (K * K - 1.0) * norm; fixC[fix_b2] = (1.0 - K / fixC[fix_reso] + K * K) * norm; K = tan(M_PI * fixD[fix_freq]); norm = 1.0 / (1.0 + K / fixD[fix_reso] + K * K); fixD[fix_a0] = K * K * norm; fixD[fix_a1] = 2.0 * fixD[fix_a0]; fixD[fix_a2] = fixD[fix_a0]; fixD[fix_b1] = 2.0 * (K * K - 1.0) * norm; fixD[fix_b2] = (1.0 - K / fixD[fix_reso] + K * K) * norm; K = tan(M_PI * fixE[fix_freq]); norm = 1.0 / (1.0 + K / fixE[fix_reso] + K * K); fixE[fix_a0] = K * K * norm; fixE[fix_a1] = 2.0 * fixE[fix_a0]; fixE[fix_a2] = fixE[fix_a0]; fixE[fix_b1] = 2.0 * (K * K - 1.0) * norm; fixE[fix_b2] = (1.0 - K / fixE[fix_reso] + K * K) * norm; K = tan(M_PI * fixF[fix_freq]); norm = 1.0 / (1.0 + K / fixF[fix_reso] + K * K); fixF[fix_a0] = K * K * norm; fixF[fix_a1] = 2.0 * fixF[fix_a0]; fixF[fix_a2] = fixF[fix_a0]; fixF[fix_b1] = 2.0 * (K * K - 1.0) * norm; fixF[fix_b2] = (1.0 - K / fixF[fix_reso] + K * K) * norm; K = tan(M_PI * fixG[fix_freq]); norm = 1.0 / (1.0 + K / fixG[fix_reso] + K * K); fixG[fix_a0] = K * K * norm; fixG[fix_a1] = 2.0 * fixG[fix_a0]; fixG[fix_a2] = fixG[fix_a0]; fixG[fix_b1] = 2.0 * (K * K - 1.0) * norm; fixG[fix_b2] = (1.0 - K / fixG[fix_reso] + K * K) * norm; while (nSampleFrames-- > 0) { double inputSample = *sourceP; double drySample = inputSample; if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17; if (fabs(iirSample)<1.18e-33) iirSample = 0.0; iirSample = (iirSample * (1.0 - iirAmount)) + (inputSample * iirAmount); inputSample = inputSample - iirSample; double outSample = (inputSample * fixA[fix_a0]) + fixA[fix_sL1]; fixA[fix_sL1] = (inputSample * fixA[fix_a1]) - (outSample * fixA[fix_b1]) + fixA[fix_sL2]; fixA[fix_sL2] = (inputSample * fixA[fix_a2]) - (outSample * fixA[fix_b2]); inputSample = outSample; //fixed biquad filtering ultrasonics inputSample *= inTrim; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; outSample = (inputSample * fixB[fix_a0]) + fixB[fix_sL1]; fixB[fix_sL1] = (inputSample * fixB[fix_a1]) - (outSample * fixB[fix_b1]) + fixB[fix_sL2]; fixB[fix_sL2] = (inputSample * fixB[fix_a2]) - (outSample * fixB[fix_b2]); inputSample = outSample; //fixed biquad filtering ultrasonics inputSample *= inTrim; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; outSample = (inputSample * fixC[fix_a0]) + fixC[fix_sL1]; fixC[fix_sL1] = (inputSample * fixC[fix_a1]) - (outSample * fixC[fix_b1]) + fixC[fix_sL2]; fixC[fix_sL2] = (inputSample * fixC[fix_a2]) - (outSample * fixC[fix_b2]); inputSample = outSample; //fixed biquad filtering ultrasonics inputSample *= inTrim; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; outSample = (inputSample * fixD[fix_a0]) + fixD[fix_sL1]; fixD[fix_sL1] = (inputSample * fixD[fix_a1]) - (outSample * fixD[fix_b1]) + fixD[fix_sL2]; fixD[fix_sL2] = (inputSample * fixD[fix_a2]) - (outSample * fixD[fix_b2]); inputSample = outSample; //fixed biquad filtering ultrasonics inputSample *= inTrim; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; outSample = (inputSample * fixE[fix_a0]) + fixE[fix_sL1]; fixE[fix_sL1] = (inputSample * fixE[fix_a1]) - (outSample * fixE[fix_b1]) + fixE[fix_sL2]; fixE[fix_sL2] = (inputSample * fixE[fix_a2]) - (outSample * fixE[fix_b2]); inputSample = outSample; //fixed biquad filtering ultrasonics inputSample *= inTrim; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; outSample = (inputSample * fixF[fix_a0]) + fixF[fix_sL1]; fixF[fix_sL1] = (inputSample * fixF[fix_a1]) - (outSample * fixF[fix_b1]) + fixF[fix_sL2]; fixF[fix_sL2] = (inputSample * fixF[fix_a2]) - (outSample * fixF[fix_b2]); inputSample = outSample; //fixed biquad filtering ultrasonics inputSample *= inTrim; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; outSample = (inputSample * fixG[fix_a0]) + fixG[fix_sL1]; fixG[fix_sL1] = (inputSample * fixG[fix_a1]) - (outSample * fixG[fix_b1]) + fixG[fix_sL2]; fixG[fix_sL2] = (inputSample * fixG[fix_a2]) - (outSample * fixG[fix_b2]); inputSample = outSample; //fixed biquad filtering ultrasonics inputSample = (inputSample * wet * outPad) + (drySample * (1.0-wet)); //begin 32 bit floating point dither int expon; frexpf((float)inputSample, &expon); fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5; inputSample += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62)); //end 32 bit floating point dither *destP = inputSample; sourceP += inNumChannels; destP += inNumChannels; } }