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248 lines
11 KiB
C++
Executable file
248 lines
11 KiB
C++
Executable file
/*
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* File: Console8BussOut.cpp
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*
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* Version: 1.0
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*
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* Created: 6/10/22
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*
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* Copyright: Copyright © 2022 Airwindows, Airwindows uses the MIT license
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*
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* Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. ("Apple") in
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* consideration of your agreement to the following terms, and your use, installation, modification
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* or redistribution of this Apple software constitutes acceptance of these terms. If you do
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* not agree with these terms, please do not use, install, modify or redistribute this Apple
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* software.
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*
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* In consideration of your agreement to abide by the following terms, and subject to these terms,
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* Apple grants you a personal, non-exclusive license, under Apple's copyrights in this
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* original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the
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* Apple Software, with or without modifications, in source and/or binary forms; provided that if you
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* redistribute the Apple Software in its entirety and without modifications, you must retain this
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* notice and the following text and disclaimers in all such redistributions of the Apple Software.
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* Neither the name, trademarks, service marks or logos of Apple Computer, Inc. may be used to
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* endorse or promote products derived from the Apple Software without specific prior written
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* permission from Apple. Except as expressly stated in this notice, no other rights or
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* licenses, express or implied, are granted by Apple herein, including but not limited to any
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* patent rights that may be infringed by your derivative works or by other works in which the
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* Apple Software may be incorporated.
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*
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* The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR
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* IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE
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* OR IN COMBINATION WITH YOUR PRODUCTS.
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*
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* IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE,
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* REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
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* UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN
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* IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*=============================================================================
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Console8BussOut.cpp
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=============================================================================*/
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#include "Console8BussOut.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(Console8BussOut)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Console8BussOut::Console8BussOut
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Console8BussOut::Console8BussOut(AudioUnit component)
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: AUEffectBase(component)
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{
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CreateElements();
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Globals()->UseIndexedParameters(kNumberOfParameters);
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SetParameter(kParam_One, kDefaultValue_ParamOne );
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#if AU_DEBUG_DISPATCHER
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mDebugDispatcher = new AUDebugDispatcher (this);
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#endif
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Console8BussOut::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Console8BussOut::GetParameterValueStrings(AudioUnitScope inScope,
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AudioUnitParameterID inParameterID,
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CFArrayRef * outStrings)
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{
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return kAudioUnitErr_InvalidProperty;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Console8BussOut::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Console8BussOut::GetParameterInfo(AudioUnitScope inScope,
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AudioUnitParameterID inParameterID,
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AudioUnitParameterInfo &outParameterInfo )
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{
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ComponentResult result = noErr;
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outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable
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| kAudioUnitParameterFlag_IsReadable;
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if (inScope == kAudioUnitScope_Global) {
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switch(inParameterID)
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{
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case kParam_One:
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AUBase::FillInParameterName (outParameterInfo, kParameterOneName, false);
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outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 1.0;
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outParameterInfo.defaultValue = kDefaultValue_ParamOne;
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break;
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default:
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result = kAudioUnitErr_InvalidParameter;
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break;
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}
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} else {
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result = kAudioUnitErr_InvalidParameter;
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}
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return result;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Console8BussOut::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Console8BussOut::GetPropertyInfo (AudioUnitPropertyID inID,
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AudioUnitScope inScope,
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AudioUnitElement inElement,
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UInt32 & outDataSize,
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Boolean & outWritable)
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{
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return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Console8BussOut::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Console8BussOut::GetProperty( AudioUnitPropertyID inID,
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AudioUnitScope inScope,
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AudioUnitElement inElement,
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void * outData )
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{
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return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
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}
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// Console8BussOut::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Console8BussOut::Initialize()
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{
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ComponentResult result = AUEffectBase::Initialize();
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if (result == noErr)
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Reset(kAudioUnitScope_Global, 0);
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return result;
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}
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#pragma mark ____Console8BussOutEffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Console8BussOut::Console8BussOutKernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void Console8BussOut::Console8BussOutKernel::Reset()
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{
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inTrimA = 0.5; inTrimB = 0.5;
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for (int x = 0; x < fix_total; x++) fix[x] = 0.0;
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lastSample = 0.0;
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wasPosClip = false;
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wasNegClip = false;
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for (int x = 0; x < 17; x++) intermediate[x] = 0.0;
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fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Console8BussOut::Console8BussOutKernel::Process
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void Console8BussOut::Console8BussOutKernel::Process( const Float32 *inSourceP,
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Float32 *inDestP,
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UInt32 inFramesToProcess,
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UInt32 inNumChannels,
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bool &ioSilence )
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{
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UInt32 nSampleFrames = inFramesToProcess;
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const Float32 *sourceP = inSourceP;
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Float32 *destP = inDestP;
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inTrimA = inTrimB; inTrimB = GetParameter( kParam_One )*2.0;
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//0.5 is unity gain, and we can attenuate to silence or boost slightly over 12dB
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//into softclip and ADClip in case we need intense loudness bursts on transients.
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//24 bit is 8388608.0, 16 bit is 32768.0
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if (GetSampleRate() > 49000.0) hsr = true;
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else hsr = false;
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fix[fix_freq] = 24000.0 / GetSampleRate();
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fix[fix_reso] = 0.52110856;
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double K = tan(M_PI * fix[fix_freq]); //lowpass
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double norm = 1.0 / (1.0 + K / fix[fix_reso] + K * K);
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fix[fix_a0] = K * K * norm;
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fix[fix_a1] = 2.0 * fix[fix_a0];
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fix[fix_a2] = fix[fix_a0];
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fix[fix_b1] = 2.0 * (K * K - 1.0) * norm;
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fix[fix_b2] = (1.0 - K / fix[fix_reso] + K * K) * norm;
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//this is the fixed biquad distributed anti-aliasing filter
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double overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= GetSampleRate();
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spacing = floor(overallscale); //should give us working basic scaling, usually 2 or 4
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if (spacing < 1) spacing = 1; if (spacing > 16) spacing = 16; //ADClip2
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while (nSampleFrames-- > 0) {
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double inputSample = *sourceP;
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if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17;
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double position = (double)nSampleFrames/inFramesToProcess;
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double inTrim = (inTrimA*position)+(inTrimB*(1.0-position));
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//presence smoothed to cut out zipper noise
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inputSample *= inTrim;
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if (inputSample > 1.57079633) inputSample = 1.57079633; if (inputSample < -1.57079633) inputSample = -1.57079633;
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inputSample = sin(inputSample);
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//Console8 gain stage clips at exactly 1.0 post-sin()
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if (hsr){
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double outSample = (inputSample * fix[fix_a0]) + fix[fix_sL1];
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fix[fix_sL1] = (inputSample * fix[fix_a1]) - (outSample * fix[fix_b1]) + fix[fix_sL2];
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fix[fix_sL2] = (inputSample * fix[fix_a2]) - (outSample * fix[fix_b2]);
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inputSample = outSample;
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} //fixed biquad filtering ultrasonics
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inputSample *= inTrim;
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//the final output fader, before ClipOnly2
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if (inputSample > 4.0) inputSample = 4.0; if (inputSample < -4.0) inputSample = -4.0;
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if (wasPosClip) { //current will be over
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if (inputSample<lastSample) lastSample=0.7058208+(inputSample*0.2609148);
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else lastSample = 0.2491717+(lastSample*0.7390851);
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} wasPosClip = false;
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if (inputSample>0.9549925859) {wasPosClip=true;inputSample=0.7058208+(lastSample*0.2609148);}
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if (wasNegClip) { //current will be -over
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if (inputSample > lastSample) lastSample=-0.7058208+(inputSample*0.2609148);
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else lastSample=-0.2491717+(lastSample*0.7390851);
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} wasNegClip = false;
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if (inputSample<-0.9549925859) {wasNegClip=true;inputSample=-0.7058208+(lastSample*0.2609148);}
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intermediate[spacing] = inputSample;
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inputSample = lastSample; //Latency is however many samples equals one 44.1k sample
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for (int x = spacing; x > 0; x--) intermediate[x-1] = intermediate[x];
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lastSample = intermediate[0]; //run a little buffer to handle this
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//ClipOnly2
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*destP = inputSample;
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sourceP += inNumChannels; destP += inNumChannels;
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}
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}
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