/* * File: Console8ChannelIn.cpp * * Version: 1.0 * * Created: 6/10/22 * * 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. * */ /*============================================================================= Console8ChannelIn.cpp =============================================================================*/ #include "Console8ChannelIn.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ COMPONENT_ENTRY(Console8ChannelIn) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Console8ChannelIn::Console8ChannelIn //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Console8ChannelIn::Console8ChannelIn(AudioUnit component) : AUEffectBase(component) { CreateElements(); Globals()->UseIndexedParameters(kNumberOfParameters); #if AU_DEBUG_DISPATCHER mDebugDispatcher = new AUDebugDispatcher (this); #endif } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Console8ChannelIn::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Console8ChannelIn::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Console8ChannelIn::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Console8ChannelIn::GetParameterInfo(AudioUnitScope inScope, AudioUnitParameterID inParameterID, AudioUnitParameterInfo &outParameterInfo ) { ComponentResult result = noErr; outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable | kAudioUnitParameterFlag_IsReadable; if (inScope == kAudioUnitScope_Global) { switch(inParameterID) { default: result = kAudioUnitErr_InvalidParameter; break; } } else { result = kAudioUnitErr_InvalidParameter; } return result; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Console8ChannelIn::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Console8ChannelIn::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Console8ChannelIn::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Console8ChannelIn::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // Console8ChannelIn::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Console8ChannelIn::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____Console8ChannelInEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Console8ChannelIn::Console8ChannelInKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Console8ChannelIn::Console8ChannelInKernel::Reset() { iirA = 0.0; iirB = 0.0; for (int x = 0; x < fix_total; x++) fix[x] = 0.0; for (int x = 0; x < 10; x++) soft[x] = 0.0; fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Console8ChannelIn::Console8ChannelInKernel::Process //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Console8ChannelIn::Console8ChannelInKernel::Process( const Float32 *inSourceP, Float32 *inDestP, UInt32 inFramesToProcess, UInt32 inNumChannels, bool &ioSilence ) { UInt32 nSampleFrames = inFramesToProcess; const Float32 *sourceP = inSourceP; Float32 *destP = inDestP; double iirAmountA = 12.66/GetSampleRate(); //this is our distributed unusual highpass, which is //adding subtle harmonics to the really deep stuff to define it if (fabs(iirA)<1.18e-37) iirA = 0.0; if (fabs(iirB)<1.18e-37) iirB = 0.0; //catch denormals early and only check once per buffer if (GetSampleRate() > 49000.0) hsr = true; else hsr = false; fix[fix_freq] = 24000.0 / GetSampleRate(); fix[fix_reso] = 0.76352112; double K = tan(M_PI * fix[fix_freq]); //lowpass double norm = 1.0 / (1.0 + K / fix[fix_reso] + K * K); fix[fix_a0] = K * K * norm; fix[fix_a1] = 2.0 * fix[fix_a0]; fix[fix_a2] = fix[fix_a0]; fix[fix_b1] = 2.0 * (K * K - 1.0) * norm; fix[fix_b2] = (1.0 - K / fix[fix_reso] + K * K) * norm; //this is the fixed biquad distributed anti-aliasing filter double overallscale = 1.0; overallscale /= 44100.0; overallscale *= GetSampleRate(); cycleEnd = floor(overallscale); if (cycleEnd < 1) cycleEnd = 1; if (cycleEnd == 3) cycleEnd = 4; if (cycleEnd > 4) cycleEnd = 4; //this is going to be 2 for 88.1 or 96k, 4 for 176 or 192k while (nSampleFrames-- > 0) { double inputSample = *sourceP; if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17; iirA = (iirA * (1.0 - iirAmountA)) + (inputSample * iirAmountA); double iirAmountB = fabs(iirA)+0.00001; iirB = (iirB * (1.0 - iirAmountB)) + (iirA * iirAmountB); inputSample -= iirB; //Console8 highpass if (cycleEnd == 4) { soft[8] = soft[7]; soft[7] = soft[6]; soft[6] = soft[5]; soft[5] = soft[4]; soft[4] = soft[3]; soft[3] = soft[2]; soft[2] = soft[1]; soft[1] = soft[0]; soft[0] = inputSample; } if (cycleEnd == 2) { soft[8] = soft[6]; soft[6] = soft[4]; soft[4] = soft[2]; soft[2] = soft[0]; soft[0] = inputSample; } if (cycleEnd == 1) { soft[8] = soft[4]; soft[4] = soft[0]; soft[0] = inputSample; } soft[9] = ((soft[0]-soft[4])-(soft[4]-soft[8])); if (soft[9] > 0.91416342) inputSample = soft[4]+(fabs(soft[4])*sin(soft[9]-0.91416342)*0.08583658); if (-soft[9] > 0.91416342) inputSample = soft[4]-(fabs(soft[4])*sin(-soft[9]-0.91416342)*0.08583658); if (inputSample > 1.57079633) inputSample = 1.57079633; if (inputSample < -1.57079633) inputSample = -1.57079633; //Console8 slew soften: must be clipped or it can generate NAN out of the full system if (hsr){ double outSample = (inputSample * fix[fix_a0]) + fix[fix_sL1]; fix[fix_sL1] = (inputSample * fix[fix_a1]) - (outSample * fix[fix_b1]) + fix[fix_sL2]; fix[fix_sL2] = (inputSample * fix[fix_a2]) - (outSample * fix[fix_b2]); inputSample = outSample; } //fixed biquad filtering ultrasonics //we can go directly into the first distortion stage of ChannelOut //with a filtered signal, so its biquad is between stages //on the input channel we have direct signal, not Console8 decode //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; } }