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+/*
+* File: PowerSag2.cpp
+*
+* Version: 1.0
+*
+* Created: 11/18/19
+*
+* 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. 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.
+*
+*/
+/*=============================================================================
+ PowerSag2.cpp
+
+=============================================================================*/
+#include "PowerSag2.h"
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+COMPONENT_ENTRY(PowerSag2)
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// PowerSag2::PowerSag2
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+PowerSag2::PowerSag2(AudioUnit component)
+ : AUEffectBase(component)
+{
+ CreateElements();
+ Globals()->UseIndexedParameters(kNumberOfParameters);
+ SetParameter(kParam_One, kDefaultValue_ParamOne );
+ SetParameter(kParam_Two, kDefaultValue_ParamTwo );
+
+#if AU_DEBUG_DISPATCHER
+ mDebugDispatcher = new AUDebugDispatcher (this);
+#endif
+
+}
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// PowerSag2::GetParameterValueStrings
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ComponentResult PowerSag2::GetParameterValueStrings(AudioUnitScope inScope,
+ AudioUnitParameterID inParameterID,
+ CFArrayRef * outStrings)
+{
+
+ return kAudioUnitErr_InvalidProperty;
+}
+
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// PowerSag2::GetParameterInfo
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ComponentResult PowerSag2::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 = -1.0;
+ outParameterInfo.maxValue = 1.0;
+ outParameterInfo.defaultValue = kDefaultValue_ParamTwo;
+ break;
+ default:
+ result = kAudioUnitErr_InvalidParameter;
+ break;
+ }
+ } else {
+ result = kAudioUnitErr_InvalidParameter;
+ }
+
+
+
+ return result;
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// PowerSag2::GetPropertyInfo
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ComponentResult PowerSag2::GetPropertyInfo (AudioUnitPropertyID inID,
+ AudioUnitScope inScope,
+ AudioUnitElement inElement,
+ UInt32 & outDataSize,
+ Boolean & outWritable)
+{
+ return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// PowerSag2::GetProperty
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ComponentResult PowerSag2::GetProperty( AudioUnitPropertyID inID,
+ AudioUnitScope inScope,
+ AudioUnitElement inElement,
+ void * outData )
+{
+ return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
+}
+
+// PowerSag2::Initialize
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ComponentResult PowerSag2::Initialize()
+{
+ ComponentResult result = AUEffectBase::Initialize();
+ if (result == noErr)
+ Reset(kAudioUnitScope_Global, 0);
+ return result;
+}
+
+#pragma mark ____PowerSag2EffectKernel
+
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// PowerSag2::PowerSag2Kernel::Reset()
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+void PowerSag2::PowerSag2Kernel::Reset()
+{
+ for(int count = 0; count < 16385; count++) {d[count] = 0;}
+ control = 0;
+ gcount = 0;
+ fpd = 17;
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// PowerSag2::PowerSag2Kernel::Process
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+void PowerSag2::PowerSag2Kernel::Process( const Float32 *inSourceP,
+ Float32 *inDestP,
+ UInt32 inFramesToProcess,
+ UInt32 inNumChannels,
+ bool &ioSilence )
+{
+ UInt32 nSampleFrames = inFramesToProcess;
+ const Float32 *sourceP = inSourceP;
+ Float32 *destP = inDestP;
+
+ Float64 depth = pow(GetParameter( kParam_One ),4);
+ int offset = (int)(depth * 16383) + 1;
+ Float64 wet = GetParameter( kParam_Two );
+
+
+ while (nSampleFrames-- > 0) {
+ long double inputSample = *sourceP;
+ if (fabs(inputSample)<1.18e-37) inputSample = fpd * 1.18e-37;
+ Float64 drySample = inputSample;
+
+ if (gcount < 0 || gcount > 16384) {gcount = 16384;}
+ d[gcount] = fabs(inputSample);
+ control += d[gcount];
+ control -= d[gcount+offset-((gcount+offset > 16384)?16384:0)];
+ gcount--;
+
+ if (control > offset) control = offset; if (control < 0.0) control = 0.0;
+
+ Float64 burst = inputSample * (control / sqrt(offset));
+ Float64 clamp = inputSample / ((burst == 0.0)?1.0:burst);
+
+ if (clamp > 1.0) clamp = 1.0; if (clamp < 0.0) clamp = 0.0;
+ inputSample *= clamp;
+ Float64 difference = drySample - inputSample;
+ if (wet < 0.0) drySample *= (wet+1.0);
+ inputSample = drySample - (difference * 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;
+ }
+}
+