/* * File: StudioTan.cpp * * Version: 1.0 * * Created: 1/9/19 * * 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. * */ /*============================================================================= StudioTan.cpp =============================================================================*/ #include "StudioTan.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ COMPONENT_ENTRY(StudioTan) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // StudioTan::StudioTan //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ StudioTan::StudioTan(AudioUnit component) : AUEffectBase(component) { CreateElements(); Globals()->UseIndexedParameters(kNumberOfParameters); SetParameter(kParam_One, kDefaultValue_ParamOne ); #if AU_DEBUG_DISPATCHER mDebugDispatcher = new AUDebugDispatcher (this); #endif } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // StudioTan::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult StudioTan::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { if ((inScope == kAudioUnitScope_Global) && (inParameterID == kParam_One)) //ID must be actual name of parameter identifier, not number { if (outStrings == NULL) return noErr; CFStringRef strings [] = { kMenuItem_ST, kMenuItem_DM, kMenuItem_NJ, kMenuItem_STCD, kMenuItem_DMCD, kMenuItem_NJCD, }; *outStrings = CFArrayCreate ( NULL, (const void **) strings, (sizeof (strings) / sizeof (strings [0])), NULL ); return noErr; } return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // StudioTan::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult StudioTan::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_Indexed; outParameterInfo.minValue = kST; outParameterInfo.maxValue = kNJCD; outParameterInfo.defaultValue = kDefaultValue_ParamOne; break; default: result = kAudioUnitErr_InvalidParameter; break; } } else { result = kAudioUnitErr_InvalidParameter; } return result; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // StudioTan::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult StudioTan::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // StudioTan::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult StudioTan::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // StudioTan::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult StudioTan::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____StudioTanEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // StudioTan::StudioTanKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void StudioTan::StudioTanKernel::Reset() { byn[0] = 1000.0; byn[1] = 301.0; byn[2] = 176.0; byn[3] = 125.0; byn[4] = 97.0; byn[5] = 79.0; byn[6] = 67.0; byn[7] = 58.0; byn[8] = 51.0; byn[9] = 46.0; byn[10] = 1000.0; noiseShaping = 0.0; lastSample = 0.0; lastSample2 = 0.0; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // StudioTan::StudioTanKernel::Process //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void StudioTan::StudioTanKernel::Process( const Float32 *inSourceP, Float32 *inDestP, UInt32 inFramesToProcess, UInt32 inNumChannels, bool &ioSilence ) { UInt32 nSampleFrames = inFramesToProcess; const Float32 *sourceP = inSourceP; Float32 *destP = inDestP; int processing = (int) GetParameter( kParam_One ); bool highres = true; //for 24 bit: false for 16 bit bool brightfloor = true; //for Studio Tan: false for Dither Me Timbers bool benford = true; //for Not Just Another Dither: false for newer two bool cutbins = false; //for NJAD: only attenuate bins if one gets very full switch (processing) { case 0: benford = false; break; //Studio Tan 24 case 1: benford = false; brightfloor = false; break; //Dither Me Timbers 24 case 2: break; //Not Just Another Dither 24 case 3: benford = false; highres = false; break; //Studio Tan 16 case 4: benford = false; brightfloor = false; highres = false; break; //Dither Me Timbers 16 case 5: highres = false; break; //Not Just Another Dither 16 } while (nSampleFrames-- > 0) { long double inputSample; long double outputSample; long double drySample; if (highres) inputSample = *sourceP * 8388608.0; else inputSample = *sourceP * 32768.0; //shared input stage if (benford) { //begin Not Just Another Dither cutbins = false; drySample = inputSample; inputSample -= noiseShaping; long double benfordize = floor(inputSample); while (benfordize >= 1.0) {benfordize /= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} int hotbinA = floor(benfordize); //hotbin becomes the Benford bin value for this number floored long double totalA = 0; if ((hotbinA > 0) && (hotbinA < 10)) { byn[hotbinA] += 1; if (byn[hotbinA] > 982) cutbins = true; totalA += (301-byn[1]); totalA += (176-byn[2]); totalA += (125-byn[3]); totalA += (97-byn[4]); totalA += (79-byn[5]); totalA += (67-byn[6]); totalA += (58-byn[7]); totalA += (51-byn[8]); totalA += (46-byn[9]); byn[hotbinA] -= 1; } else {hotbinA = 10;} //produce total number- smaller is closer to Benford real benfordize = ceil(inputSample); while (benfordize >= 1.0) {benfordize /= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} int hotbinB = floor(benfordize); //hotbin becomes the Benford bin value for this number ceiled long double totalB = 0; if ((hotbinB > 0) && (hotbinB < 10)) { byn[hotbinB] += 1; if (byn[hotbinB] > 982) cutbins = true; totalB += (301-byn[1]); totalB += (176-byn[2]); totalB += (125-byn[3]); totalB += (97-byn[4]); totalB += (79-byn[5]); totalB += (67-byn[6]); totalB += (58-byn[7]); totalB += (51-byn[8]); totalB += (46-byn[9]); byn[hotbinB] -= 1; } else {hotbinB = 10;} //produce total number- smaller is closer to Benford real if (totalA < totalB) { byn[hotbinA] += 1; outputSample = floor(inputSample); } else { byn[hotbinB] += 1; outputSample = floor(inputSample+1); } //assign the relevant one to the delay line //and floor/ceil signal accordingly if (cutbins) { byn[1] *= 0.99; byn[2] *= 0.99; byn[3] *= 0.99; byn[4] *= 0.99; byn[5] *= 0.99; byn[6] *= 0.99; byn[7] *= 0.99; byn[8] *= 0.99; byn[9] *= 0.99; byn[10] *= 0.99; //catchall for garbage data } noiseShaping += outputSample - drySample; //end Not Just Another Dither } else { //begin StudioTan or Dither Me Timbers if (brightfloor) { lastSample -= (noiseShaping*0.8); if ((lastSample+lastSample) <= (inputSample+lastSample2)) outputSample = floor(lastSample); //StudioTan else outputSample = floor(lastSample+1.0); //round down or up based on whether it softens treble angles } else { lastSample -= (noiseShaping*0.11); if ((lastSample+lastSample) >= (inputSample+lastSample2)) outputSample = floor(lastSample); //DitherMeTimbers else outputSample = floor(lastSample+1.0); //round down or up based on whether it softens treble angles } noiseShaping += outputSample; noiseShaping -= lastSample; //apply noise shaping lastSample2 = lastSample; lastSample = inputSample; //we retain three samples in a row //end StudioTan or Dither Me Timbers } //shared output stage long double noiseSuppress = fabs(inputSample); if (noiseShaping > noiseSuppress) noiseShaping = noiseSuppress; if (noiseShaping < -noiseSuppress) noiseShaping = -noiseSuppress; Float32 ironBar; if (highres) ironBar = outputSample / 8388608.0; else ironBar = outputSample / 32768.0; if (ironBar > 1.0) ironBar = 1.0; if (ironBar < -1.0) ironBar = -1.0; *destP = ironBar; sourceP += inNumChannels; destP += inNumChannels; } }