/* * File: BassDrive.cpp * * Version: 1.0 * * Created: 5/24/19 * * Copyright: Copyright © 2019 Airwindows, All Rights Reserved * * 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. * */ /*============================================================================= BassDrive.cpp =============================================================================*/ #include "BassDrive.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ COMPONENT_ENTRY(BassDrive) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BassDrive::BassDrive //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ BassDrive::BassDrive(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 } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BassDrive::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BassDrive::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BassDrive::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BassDrive::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; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BassDrive::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BassDrive::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BassDrive::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BassDrive::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // BassDrive::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BassDrive::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____BassDriveEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BassDrive::BassDriveKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void BassDrive::BassDriveKernel::Reset() { for (int fcount = 0; fcount < 7; fcount++) { presenceInA[fcount] = 0.0; presenceOutA[fcount] = 0.0; highInA[fcount] = 0.0; highOutA[fcount] = 0.0; midInA[fcount] = 0.0; midOutA[fcount] = 0.0; lowInA[fcount] = 0.0; lowOutA[fcount] = 0.0; presenceInB[fcount] = 0.0; presenceOutB[fcount] = 0.0; highInB[fcount] = 0.0; highOutB[fcount] = 0.0; midInB[fcount] = 0.0; midOutB[fcount] = 0.0; lowInB[fcount] = 0.0; lowOutB[fcount] = 0.0; } flip = false; fpd = 17; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BassDrive::BassDriveKernel::Process //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void BassDrive::BassDriveKernel::Process( const Float32 *inSourceP, Float32 *inDestP, UInt32 inFramesToProcess, UInt32 inNumChannels, bool &ioSilence ) { UInt32 nSampleFrames = inFramesToProcess; const Float32 *sourceP = inSourceP; Float32 *destP = inDestP; Float64 sum; Float64 presence = pow(GetParameter( kParam_One ),5) * 8.0; Float64 high = pow(GetParameter( kParam_Two ),3) * 4.0; Float64 mid = pow(GetParameter( kParam_Three ),2); Float64 low = GetParameter( kParam_Four ) / 4.0; Float64 drive = GetParameter( kParam_Five ) * 2.0; Float64 bridgerectifier; while (nSampleFrames-- > 0) { long double inputSample = *sourceP; if (fabs(inputSample)<1.18e-37) inputSample = fpd * 1.18e-37; sum = 0.0; if (flip) { presenceInA[0] = presenceInA[1]; presenceInA[1] = presenceInA[2]; presenceInA[2] = presenceInA[3]; presenceInA[3] = presenceInA[4]; presenceInA[4] = presenceInA[5]; presenceInA[5] = presenceInA[6]; presenceInA[6] = inputSample * presence; presenceOutA[2] = presenceOutA[3]; presenceOutA[3] = presenceOutA[4]; presenceOutA[4] = presenceOutA[5]; presenceOutA[5] = presenceOutA[6]; presenceOutA[6] = (presenceInA[0] + presenceInA[6]) + 1.9152966321 * (presenceInA[1] + presenceInA[5]) - (presenceInA[2] + presenceInA[4]) - 3.8305932641 * presenceInA[3] + ( -0.2828214615 * presenceOutA[2]) + ( 0.2613069963 * presenceOutA[3]) + ( -0.8628193852 * presenceOutA[4]) + ( 0.5387164389 * presenceOutA[5]); bridgerectifier = fabs(presenceOutA[6]); if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633; bridgerectifier = sin(bridgerectifier); if (presenceOutA[6] > 0.0){sum += bridgerectifier;} else {sum -= bridgerectifier;} //presence section highInA[0] = highInA[1]; highInA[1] = highInA[2]; highInA[2] = highInA[3]; highInA[3] = highInA[4]; highInA[4] = highInA[5]; highInA[5] = highInA[6]; bridgerectifier = fabs(inputSample) * high; if (bridgerectifier > 1.57079633) {bridgerectifier = 1.57079633;} bridgerectifier = sin(bridgerectifier); if (inputSample > 0.0) {highInA[6] = bridgerectifier;} else {highInA[6] = -bridgerectifier;} highInA[6] *= high; highOutA[2] = highOutA[3]; highOutA[3] = highOutA[4]; highOutA[4] = highOutA[5]; highOutA[5] = highOutA[6]; highOutA[6] = (highInA[0] + highInA[6]) - 0.5141967433 * (highInA[1] + highInA[5]) - (highInA[2] + highInA[4]) + 1.0283934866 * highInA[3] + ( -0.2828214615 * highOutA[2]) + ( 1.0195930909 * highOutA[3]) + ( -1.9633013869 * highOutA[4]) + ( 2.1020162751 * highOutA[5]); bridgerectifier = fabs(highOutA[6]); if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633; bridgerectifier = sin(bridgerectifier); if (highOutA[6] > 0.0){sum += bridgerectifier;} else {sum -= bridgerectifier;} //high section midInA[0] = midInA[1]; midInA[1] = midInA[2]; midInA[2] = midInA[3]; midInA[3] = midInA[4]; midInA[4] = midInA[5]; midInA[5] = midInA[6]; bridgerectifier = fabs(inputSample) * mid; if (bridgerectifier > 1.57079633) {bridgerectifier = 1.57079633;} bridgerectifier = sin(bridgerectifier); if (inputSample > 0.0) {midInA[6] = bridgerectifier;} else {midInA[6] = -bridgerectifier;} midInA[6] *= mid; midOutA[2] = midOutA[3]; midOutA[3] = midOutA[4]; midOutA[4] = midOutA[5]; midOutA[5] = midOutA[6]; midOutA[6] = (midInA[0] + midInA[6]) - 1.1790257790 * (midInA[1] + midInA[5]) - (midInA[2] + midInA[4]) + 2.3580515580 * midInA[3] + ( -0.6292082828 * midOutA[2]) + ( 2.7785843605 * midOutA[3]) + ( -4.6638295236 * midOutA[4]) + ( 3.5142515802 * midOutA[5]); sum += midOutA[6]; //mid section lowInA[0] = lowInA[1]; lowInA[1] = lowInA[2]; lowInA[2] = lowInA[3]; lowInA[3] = lowInA[4]; lowInA[4] = lowInA[5]; lowInA[5] = lowInA[6]; bridgerectifier = fabs(inputSample) * low; if (bridgerectifier > 1.57079633) {bridgerectifier = 1.57079633;} bridgerectifier = sin(bridgerectifier); if (inputSample > 0.0) {lowInA[6] = bridgerectifier;} else {lowInA[6] = -bridgerectifier;} lowInA[6] *= low; lowOutA[2] = lowOutA[3]; lowOutA[3] = lowOutA[4]; lowOutA[4] = lowOutA[5]; lowOutA[5] = lowOutA[6]; lowOutA[6] = (lowInA[0] + lowInA[6]) - 1.9193504547 * (lowInA[1] + lowInA[5]) - (lowInA[2] + lowInA[4]) + 3.8387009093 * lowInA[3] + ( -0.9195964462 * lowOutA[2]) + ( 3.7538173833 * lowOutA[3]) + ( -5.7487775603 * lowOutA[4]) + ( 3.9145559258 * lowOutA[5]); sum += lowOutA[6]; //low section } else { presenceInB[0] = presenceInB[1]; presenceInB[1] = presenceInB[2]; presenceInB[2] = presenceInB[3]; presenceInB[3] = presenceInB[4]; presenceInB[4] = presenceInB[5]; presenceInB[5] = presenceInB[6]; presenceInB[6] = inputSample * presence; presenceOutB[2] = presenceOutB[3]; presenceOutB[3] = presenceOutB[4]; presenceOutB[4] = presenceOutB[5]; presenceOutB[5] = presenceOutB[6]; presenceOutB[6] = (presenceInB[0] + presenceInB[6]) + 1.9152966321 * (presenceInB[1] + presenceInB[5]) - (presenceInB[2] + presenceInB[4]) - 3.8305932641 * presenceInB[3] + ( -0.2828214615 * presenceOutB[2]) + ( 0.2613069963 * presenceOutB[3]) + ( -0.8628193852 * presenceOutB[4]) + ( 0.5387164389 * presenceOutB[5]); bridgerectifier = fabs(presenceOutB[6]); if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633; bridgerectifier = sin(bridgerectifier); if (presenceOutB[6] > 0.0){sum += bridgerectifier;} else {sum -= bridgerectifier;} //presence section highInB[0] = highInB[1]; highInB[1] = highInB[2]; highInB[2] = highInB[3]; highInB[3] = highInB[4]; highInB[4] = highInB[5]; highInB[5] = highInB[6]; bridgerectifier = fabs(inputSample) * high; if (bridgerectifier > 1.57079633) {bridgerectifier = 1.57079633;} bridgerectifier = sin(bridgerectifier); if (inputSample > 0.0) {highInB[6] = bridgerectifier;} else {highInB[6] = -bridgerectifier;} highInB[6] *= high; highOutB[2] = highOutB[3]; highOutB[3] = highOutB[4]; highOutB[4] = highOutB[5]; highOutB[5] = highOutB[6]; highOutB[6] = (highInB[0] + highInB[6]) - 0.5141967433 * (highInB[1] + highInB[5]) - (highInB[2] + highInB[4]) + 1.0283934866 * highInB[3] + ( -0.2828214615 * highOutB[2]) + ( 1.0195930909 * highOutB[3]) + ( -1.9633013869 * highOutB[4]) + ( 2.1020162751 * highOutB[5]); bridgerectifier = fabs(highOutB[6]); if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633; bridgerectifier = sin(bridgerectifier); if (highOutB[6] > 0.0){sum += bridgerectifier;} else {sum -= bridgerectifier;} //high section midInB[0] = midInB[1]; midInB[1] = midInB[2]; midInB[2] = midInB[3]; midInB[3] = midInB[4]; midInB[4] = midInB[5]; midInB[5] = midInB[6]; bridgerectifier = fabs(inputSample) * mid; if (bridgerectifier > 1.57079633) {bridgerectifier = 1.57079633;} bridgerectifier = sin(bridgerectifier); if (inputSample > 0.0) {midInB[6] = bridgerectifier;} else {midInB[6] = -bridgerectifier;} midInB[6] *= mid; midOutB[2] = midOutB[3]; midOutB[3] = midOutB[4]; midOutB[4] = midOutB[5]; midOutB[5] = midOutB[6]; midOutB[6] = (midInB[0] + midInB[6]) - 1.1790257790 * (midInB[1] + midInB[5]) - (midInB[2] + midInB[4]) + 2.3580515580 * midInB[3] + ( -0.6292082828 * midOutB[2]) + ( 2.7785843605 * midOutB[3]) + ( -4.6638295236 * midOutB[4]) + ( 3.5142515802 * midOutB[5]); sum += midOutB[6]; //mid section lowInB[0] = lowInB[1]; lowInB[1] = lowInB[2]; lowInB[2] = lowInB[3]; lowInB[3] = lowInB[4]; lowInB[4] = lowInB[5]; lowInB[5] = lowInB[6]; bridgerectifier = fabs(inputSample) * low; if (bridgerectifier > 1.57079633) {bridgerectifier = 1.57079633;} bridgerectifier = sin(bridgerectifier); if (inputSample > 0.0) {lowInB[6] = bridgerectifier;} else {lowInB[6] = -bridgerectifier;} lowInB[6] *= low; lowOutB[2] = lowOutB[3]; lowOutB[3] = lowOutB[4]; lowOutB[4] = lowOutB[5]; lowOutB[5] = lowOutB[6]; lowOutB[6] = (lowInB[0] + lowInB[6]) - 1.9193504547 * (lowInB[1] + lowInB[5]) - (lowInB[2] + lowInB[4]) + 3.8387009093 * lowInB[3] + ( -0.9195964462 * lowOutB[2]) + ( 3.7538173833 * lowOutB[3]) + ( -5.7487775603 * lowOutB[4]) + ( 3.9145559258 * lowOutB[5]); sum += lowOutB[6]; //low section } inputSample = fabs(sum) * drive; if (inputSample > 1.57079633) {inputSample = 1.57079633;} inputSample = sin(inputSample); if (sum < 0) inputSample = -inputSample; flip = !flip; //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; } }