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airwindows/plugins/MacAU/Isolator3/Isolator3.cpp
Christopher Johnson b77a11bab5 ToTape7
2024-08-18 16:05:41 -04:00

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/*
* File: Isolator3.cpp
*
* Version: 1.0
*
* Created: 8/15/24
*
* Copyright: Copyright © 2024 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.
*
*/
/*=============================================================================
Isolator3.cpp
=============================================================================*/
#include "Isolator3.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
COMPONENT_ENTRY(Isolator3)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Isolator3::Isolator3
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Isolator3::Isolator3(AudioUnit component)
: AUEffectBase(component)
{
CreateElements();
Globals()->UseIndexedParameters(kNumberOfParameters);
SetParameter(kParam_A, kDefaultValue_ParamA );
SetParameter(kParam_B, kDefaultValue_ParamB );
#if AU_DEBUG_DISPATCHER
mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Isolator3::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Isolator3::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Isolator3::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Isolator3::GetParameterInfo(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
AudioUnitParameterInfo &outParameterInfo )
{
ComponentResult result = noErr;
outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable
| kAudioUnitParameterFlag_IsReadable;
if (inScope == kAudioUnitScope_Global) {
switch(inParameterID)
{
case kParam_A:
AUBase::FillInParameterName (outParameterInfo, kParameterAName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamA;
break;
case kParam_B:
AUBase::FillInParameterName (outParameterInfo, kParameterBName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamB;
break;
default:
result = kAudioUnitErr_InvalidParameter;
break;
}
} else {
result = kAudioUnitErr_InvalidParameter;
}
return result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Isolator3::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Isolator3::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Isolator3::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Isolator3::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// Isolator3::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Isolator3::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____Isolator3EffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Isolator3::Isolator3Kernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void Isolator3::Isolator3Kernel::Reset()
{
for (int x = 0; x < biq_total; x++) {
biquadA[x] = 0.0;
biquadB[x] = 0.0;
biquadC[x] = 0.0;
biquadD[x] = 0.0;
biquadE[x] = 0.0;
biquadF[x] = 0.0;
biquadG[x] = 0.0;
hiquadA[x] = 0.0;
hiquadB[x] = 0.0;
hiquadC[x] = 0.0;
hiquadD[x] = 0.0;
hiquadE[x] = 0.0;
hiquadF[x] = 0.0;
hiquadG[x] = 0.0;
}
lastSampleL = 0.0;
wasPosClipL = false;
wasNegClipL = false;
for (int x = 0; x < 16; x++) {intermediateL[x] = 0.0;}
//this is reset: values being initialized only once. Startup values, whatever they are.
fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Isolator3::Isolator3Kernel::Process
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void Isolator3::Isolator3Kernel::Process( const Float32 *inSourceP,
Float32 *inDestP,
UInt32 inFramesToProcess,
UInt32 inNumChannels,
bool &ioSilence )
{
UInt32 nSampleFrames = inFramesToProcess;
const Float32 *sourceP = inSourceP;
Float32 *destP = inDestP;
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= GetSampleRate();
int spacing = floor(overallscale); //should give us working basic scaling, usually 2 or 4
if (spacing < 1) spacing = 1; if (spacing > 16) spacing = 16;
double f = GetParameter( kParam_A );
double q = GetParameter( kParam_B );
double isoFreq = ((f*2.0)*(1.0-q))+(f*q);
double hisoFreq = (((f*2.0)-1.0)*(1.0-q))+(f*q);
if (isoFreq > 1.0) isoFreq = 1.0;
if (hisoFreq < 0.0) hisoFreq = 0.0;
biquadA[biq_freq] = pow(isoFreq,(2.0*sqrt(overallscale)))*0.4999;
if (biquadA[biq_freq] < 0.00025) biquadA[biq_freq] = 0.00025;
biquadG[biq_freq] = biquadF[biq_freq] = biquadE[biq_freq] = biquadD[biq_freq] = biquadC[biq_freq] = biquadB[biq_freq] = biquadA[biq_freq];
hiquadA[biq_freq] = pow(hisoFreq,(2.0*sqrt(overallscale)))*0.4999;
if (hiquadA[biq_freq] < 0.00025) hiquadA[biq_freq] = 0.00025;
hiquadG[biq_freq] = hiquadF[biq_freq] = hiquadE[biq_freq] = hiquadD[biq_freq] = hiquadC[biq_freq] = hiquadB[biq_freq] = hiquadA[biq_freq];
hiquadA[biq_reso] = biquadA[biq_reso] = 4.46570214;
hiquadB[biq_reso] = biquadB[biq_reso] = 1.51387132;
hiquadC[biq_reso] = biquadC[biq_reso] = 0.93979296;
hiquadD[biq_reso] = biquadD[biq_reso] = 0.70710678;
hiquadE[biq_reso] = biquadE[biq_reso] = 0.59051105;
hiquadF[biq_reso] = biquadF[biq_reso] = 0.52972649;
hiquadG[biq_reso] = biquadG[biq_reso] = 0.50316379;
biquadA[biq_aA0] = biquadA[biq_aB0];
biquadA[biq_aA1] = biquadA[biq_aB1];
biquadA[biq_aA2] = biquadA[biq_aB2];
biquadA[biq_bA1] = biquadA[biq_bB1];
biquadA[biq_bA2] = biquadA[biq_bB2];
biquadB[biq_aA0] = biquadB[biq_aB0];
biquadB[biq_aA1] = biquadB[biq_aB1];
biquadB[biq_aA2] = biquadB[biq_aB2];
biquadB[biq_bA1] = biquadB[biq_bB1];
biquadB[biq_bA2] = biquadB[biq_bB2];
biquadC[biq_aA0] = biquadC[biq_aB0];
biquadC[biq_aA1] = biquadC[biq_aB1];
biquadC[biq_aA2] = biquadC[biq_aB2];
biquadC[biq_bA1] = biquadC[biq_bB1];
biquadC[biq_bA2] = biquadC[biq_bB2];
biquadD[biq_aA0] = biquadD[biq_aB0];
biquadD[biq_aA1] = biquadD[biq_aB1];
biquadD[biq_aA2] = biquadD[biq_aB2];
biquadD[biq_bA1] = biquadD[biq_bB1];
biquadD[biq_bA2] = biquadD[biq_bB2];
biquadE[biq_aA0] = biquadE[biq_aB0];
biquadE[biq_aA1] = biquadE[biq_aB1];
biquadE[biq_aA2] = biquadE[biq_aB2];
biquadE[biq_bA1] = biquadE[biq_bB1];
biquadE[biq_bA2] = biquadE[biq_bB2];
biquadF[biq_aA0] = biquadF[biq_aB0];
biquadF[biq_aA1] = biquadF[biq_aB1];
biquadF[biq_aA2] = biquadF[biq_aB2];
biquadF[biq_bA1] = biquadF[biq_bB1];
biquadF[biq_bA2] = biquadF[biq_bB2];
biquadG[biq_aA0] = biquadG[biq_aB0];
biquadG[biq_aA1] = biquadG[biq_aB1];
biquadG[biq_aA2] = biquadG[biq_aB2];
biquadG[biq_bA1] = biquadG[biq_bB1];
biquadG[biq_bA2] = biquadG[biq_bB2];
hiquadA[biq_aA0] = hiquadA[biq_aB0];
hiquadA[biq_aA1] = hiquadA[biq_aB1];
hiquadA[biq_aA2] = hiquadA[biq_aB2];
hiquadA[biq_bA1] = hiquadA[biq_bB1];
hiquadA[biq_bA2] = hiquadA[biq_bB2];
hiquadB[biq_aA0] = hiquadB[biq_aB0];
hiquadB[biq_aA1] = hiquadB[biq_aB1];
hiquadB[biq_aA2] = hiquadB[biq_aB2];
hiquadB[biq_bA1] = hiquadB[biq_bB1];
hiquadB[biq_bA2] = hiquadB[biq_bB2];
hiquadC[biq_aA0] = hiquadC[biq_aB0];
hiquadC[biq_aA1] = hiquadC[biq_aB1];
hiquadC[biq_aA2] = hiquadC[biq_aB2];
hiquadC[biq_bA1] = hiquadC[biq_bB1];
hiquadC[biq_bA2] = hiquadC[biq_bB2];
hiquadD[biq_aA0] = hiquadD[biq_aB0];
hiquadD[biq_aA1] = hiquadD[biq_aB1];
hiquadD[biq_aA2] = hiquadD[biq_aB2];
hiquadD[biq_bA1] = hiquadD[biq_bB1];
hiquadD[biq_bA2] = hiquadD[biq_bB2];
hiquadE[biq_aA0] = hiquadE[biq_aB0];
hiquadE[biq_aA1] = hiquadE[biq_aB1];
hiquadE[biq_aA2] = hiquadE[biq_aB2];
hiquadE[biq_bA1] = hiquadE[biq_bB1];
hiquadE[biq_bA2] = hiquadE[biq_bB2];
hiquadF[biq_aA0] = hiquadF[biq_aB0];
hiquadF[biq_aA1] = hiquadF[biq_aB1];
hiquadF[biq_aA2] = hiquadF[biq_aB2];
hiquadF[biq_bA1] = hiquadF[biq_bB1];
hiquadF[biq_bA2] = hiquadF[biq_bB2];
hiquadG[biq_aA0] = hiquadG[biq_aB0];
hiquadG[biq_aA1] = hiquadG[biq_aB1];
hiquadG[biq_aA2] = hiquadG[biq_aB2];
hiquadG[biq_bA1] = hiquadG[biq_bB1];
hiquadG[biq_bA2] = hiquadG[biq_bB2];
//previous run through the buffer is still in the filter, so we move it
//to the A section and now it's the new starting point.
double K = tan(M_PI * biquadA[biq_freq]);
double norm = 1.0 / (1.0 + K / biquadA[biq_reso] + K * K);
biquadA[biq_aB0] = K * K * norm;
biquadA[biq_aB1] = 2.0 * biquadA[biq_aB0];
biquadA[biq_aB2] = biquadA[biq_aB0];
biquadA[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadA[biq_bB2] = (1.0 - K / biquadA[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadB[biq_freq]);
norm = 1.0 / (1.0 + K / biquadB[biq_reso] + K * K);
biquadB[biq_aB0] = K * K * norm;
biquadB[biq_aB1] = 2.0 * biquadB[biq_aB0];
biquadB[biq_aB2] = biquadB[biq_aB0];
biquadB[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadB[biq_bB2] = (1.0 - K / biquadB[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadC[biq_freq]);
norm = 1.0 / (1.0 + K / biquadC[biq_reso] + K * K);
biquadC[biq_aB0] = K * K * norm;
biquadC[biq_aB1] = 2.0 * biquadC[biq_aB0];
biquadC[biq_aB2] = biquadC[biq_aB0];
biquadC[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadC[biq_bB2] = (1.0 - K / biquadC[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadD[biq_freq]);
norm = 1.0 / (1.0 + K / biquadD[biq_reso] + K * K);
biquadD[biq_aB0] = K * K * norm;
biquadD[biq_aB1] = 2.0 * biquadD[biq_aB0];
biquadD[biq_aB2] = biquadD[biq_aB0];
biquadD[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadD[biq_bB2] = (1.0 - K / biquadD[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadE[biq_freq]);
norm = 1.0 / (1.0 + K / biquadE[biq_reso] + K * K);
biquadE[biq_aB0] = K * K * norm;
biquadE[biq_aB1] = 2.0 * biquadE[biq_aB0];
biquadE[biq_aB2] = biquadE[biq_aB0];
biquadE[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadE[biq_bB2] = (1.0 - K / biquadE[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadF[biq_freq]);
norm = 1.0 / (1.0 + K / biquadF[biq_reso] + K * K);
biquadF[biq_aB0] = K * K * norm;
biquadF[biq_aB1] = 2.0 * biquadF[biq_aB0];
biquadF[biq_aB2] = biquadF[biq_aB0];
biquadF[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadF[biq_bB2] = (1.0 - K / biquadF[biq_reso] + K * K) * norm;
K = tan(M_PI * biquadG[biq_freq]);
norm = 1.0 / (1.0 + K / biquadG[biq_reso] + K * K);
biquadG[biq_aB0] = K * K * norm;
biquadG[biq_aB1] = 2.0 * biquadG[biq_aB0];
biquadG[biq_aB2] = biquadG[biq_aB0];
biquadG[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
biquadG[biq_bB2] = (1.0 - K / biquadG[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadA[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadA[biq_reso] + K * K);
hiquadA[biq_aB0] = K * K * norm;
hiquadA[biq_aB1] = 2.0 * hiquadA[biq_aB0];
hiquadA[biq_aB2] = hiquadA[biq_aB0];
hiquadA[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadA[biq_bB2] = (1.0 - K / hiquadA[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadB[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadB[biq_reso] + K * K);
hiquadB[biq_aB0] = K * K * norm;
hiquadB[biq_aB1] = 2.0 * hiquadB[biq_aB0];
hiquadB[biq_aB2] = hiquadB[biq_aB0];
hiquadB[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadB[biq_bB2] = (1.0 - K / hiquadB[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadC[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadC[biq_reso] + K * K);
hiquadC[biq_aB0] = K * K * norm;
hiquadC[biq_aB1] = 2.0 * hiquadC[biq_aB0];
hiquadC[biq_aB2] = hiquadC[biq_aB0];
hiquadC[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadC[biq_bB2] = (1.0 - K / hiquadC[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadD[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadD[biq_reso] + K * K);
hiquadD[biq_aB0] = K * K * norm;
hiquadD[biq_aB1] = 2.0 * hiquadD[biq_aB0];
hiquadD[biq_aB2] = hiquadD[biq_aB0];
hiquadD[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadD[biq_bB2] = (1.0 - K / hiquadD[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadE[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadE[biq_reso] + K * K);
hiquadE[biq_aB0] = K * K * norm;
hiquadE[biq_aB1] = 2.0 * hiquadE[biq_aB0];
hiquadE[biq_aB2] = hiquadE[biq_aB0];
hiquadE[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadE[biq_bB2] = (1.0 - K / hiquadE[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadF[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadF[biq_reso] + K * K);
hiquadF[biq_aB0] = K * K * norm;
hiquadF[biq_aB1] = 2.0 * hiquadF[biq_aB0];
hiquadF[biq_aB2] = hiquadF[biq_aB0];
hiquadF[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadF[biq_bB2] = (1.0 - K / hiquadF[biq_reso] + K * K) * norm;
K = tan(M_PI * hiquadG[biq_freq]);
norm = 1.0 / (1.0 + K / hiquadG[biq_reso] + K * K);
hiquadG[biq_aB0] = K * K * norm;
hiquadG[biq_aB1] = 2.0 * hiquadG[biq_aB0];
hiquadG[biq_aB2] = hiquadG[biq_aB0];
hiquadG[biq_bB1] = 2.0 * (K * K - 1.0) * norm;
hiquadG[biq_bB2] = (1.0 - K / hiquadG[biq_reso] + K * K) * norm;
while (nSampleFrames-- > 0) {
double inputSample = *sourceP;
if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17;
double drySample = inputSample;
double temp = (double)nSampleFrames/inFramesToProcess;
hiquadA[biq_a0] = (hiquadA[biq_aA0]*temp)+(hiquadA[biq_aB0]*(1.0-temp));
hiquadA[biq_a1] = (hiquadA[biq_aA1]*temp)+(hiquadA[biq_aB1]*(1.0-temp));
hiquadA[biq_a2] = (hiquadA[biq_aA2]*temp)+(hiquadA[biq_aB2]*(1.0-temp));
hiquadA[biq_b1] = (hiquadA[biq_bA1]*temp)+(hiquadA[biq_bB1]*(1.0-temp));
hiquadA[biq_b2] = (hiquadA[biq_bA2]*temp)+(hiquadA[biq_bB2]*(1.0-temp));
hiquadB[biq_a0] = (hiquadB[biq_aA0]*temp)+(hiquadB[biq_aB0]*(1.0-temp));
hiquadB[biq_a1] = (hiquadB[biq_aA1]*temp)+(hiquadB[biq_aB1]*(1.0-temp));
hiquadB[biq_a2] = (hiquadB[biq_aA2]*temp)+(hiquadB[biq_aB2]*(1.0-temp));
hiquadB[biq_b1] = (hiquadB[biq_bA1]*temp)+(hiquadB[biq_bB1]*(1.0-temp));
hiquadB[biq_b2] = (hiquadB[biq_bA2]*temp)+(hiquadB[biq_bB2]*(1.0-temp));
hiquadC[biq_a0] = (hiquadC[biq_aA0]*temp)+(hiquadC[biq_aB0]*(1.0-temp));
hiquadC[biq_a1] = (hiquadC[biq_aA1]*temp)+(hiquadC[biq_aB1]*(1.0-temp));
hiquadC[biq_a2] = (hiquadC[biq_aA2]*temp)+(hiquadC[biq_aB2]*(1.0-temp));
hiquadC[biq_b1] = (hiquadC[biq_bA1]*temp)+(hiquadC[biq_bB1]*(1.0-temp));
hiquadC[biq_b2] = (hiquadC[biq_bA2]*temp)+(hiquadC[biq_bB2]*(1.0-temp));
hiquadD[biq_a0] = (hiquadD[biq_aA0]*temp)+(hiquadD[biq_aB0]*(1.0-temp));
hiquadD[biq_a1] = (hiquadD[biq_aA1]*temp)+(hiquadD[biq_aB1]*(1.0-temp));
hiquadD[biq_a2] = (hiquadD[biq_aA2]*temp)+(hiquadD[biq_aB2]*(1.0-temp));
hiquadD[biq_b1] = (hiquadD[biq_bA1]*temp)+(hiquadD[biq_bB1]*(1.0-temp));
hiquadD[biq_b2] = (hiquadD[biq_bA2]*temp)+(hiquadD[biq_bB2]*(1.0-temp));
hiquadE[biq_a0] = (hiquadE[biq_aA0]*temp)+(hiquadE[biq_aB0]*(1.0-temp));
hiquadE[biq_a1] = (hiquadE[biq_aA1]*temp)+(hiquadE[biq_aB1]*(1.0-temp));
hiquadE[biq_a2] = (hiquadE[biq_aA2]*temp)+(hiquadE[biq_aB2]*(1.0-temp));
hiquadE[biq_b1] = (hiquadE[biq_bA1]*temp)+(hiquadE[biq_bB1]*(1.0-temp));
hiquadE[biq_b2] = (hiquadE[biq_bA2]*temp)+(hiquadE[biq_bB2]*(1.0-temp));
hiquadF[biq_a0] = (hiquadF[biq_aA0]*temp)+(hiquadF[biq_aB0]*(1.0-temp));
hiquadF[biq_a1] = (hiquadF[biq_aA1]*temp)+(hiquadF[biq_aB1]*(1.0-temp));
hiquadF[biq_a2] = (hiquadF[biq_aA2]*temp)+(hiquadF[biq_aB2]*(1.0-temp));
hiquadF[biq_b1] = (hiquadF[biq_bA1]*temp)+(hiquadF[biq_bB1]*(1.0-temp));
hiquadF[biq_b2] = (hiquadF[biq_bA2]*temp)+(hiquadF[biq_bB2]*(1.0-temp));
hiquadG[biq_a0] = (hiquadG[biq_aA0]*temp)+(hiquadG[biq_aB0]*(1.0-temp));
hiquadG[biq_a1] = (hiquadG[biq_aA1]*temp)+(hiquadG[biq_aB1]*(1.0-temp));
hiquadG[biq_a2] = (hiquadG[biq_aA2]*temp)+(hiquadG[biq_aB2]*(1.0-temp));
hiquadG[biq_b1] = (hiquadG[biq_bA1]*temp)+(hiquadG[biq_bB1]*(1.0-temp));
hiquadG[biq_b2] = (hiquadG[biq_bA2]*temp)+(hiquadG[biq_bB2]*(1.0-temp));
//this is the interpolation code for the hiquad
double outSample = (inputSample * hiquadA[biq_a0]) + hiquadA[biq_sL1];
hiquadA[biq_sL1] = (inputSample * hiquadA[biq_a1]) - (outSample * hiquadA[biq_b1]) + hiquadA[biq_sL2];
hiquadA[biq_sL2] = (inputSample * hiquadA[biq_a2]) - (outSample * hiquadA[biq_b2]);
inputSample = outSample;
outSample = (inputSample * hiquadB[biq_a0]) + hiquadB[biq_sL1];
hiquadB[biq_sL1] = (inputSample * hiquadB[biq_a1]) - (outSample * hiquadB[biq_b1]) + hiquadB[biq_sL2];
hiquadB[biq_sL2] = (inputSample * hiquadB[biq_a2]) - (outSample * hiquadB[biq_b2]);
inputSample = outSample;
outSample = (inputSample * hiquadC[biq_a0]) + hiquadC[biq_sL1];
hiquadC[biq_sL1] = (inputSample * hiquadC[biq_a1]) - (outSample * hiquadC[biq_b1]) + hiquadC[biq_sL2];
hiquadC[biq_sL2] = (inputSample * hiquadC[biq_a2]) - (outSample * hiquadC[biq_b2]);
inputSample = outSample;
outSample = (inputSample * hiquadD[biq_a0]) + hiquadD[biq_sL1];
hiquadD[biq_sL1] = (inputSample * hiquadD[biq_a1]) - (outSample * hiquadD[biq_b1]) + hiquadD[biq_sL2];
hiquadD[biq_sL2] = (inputSample * hiquadD[biq_a2]) - (outSample * hiquadD[biq_b2]);
inputSample = outSample;
outSample = (inputSample * hiquadE[biq_a0]) + hiquadE[biq_sL1];
hiquadE[biq_sL1] = (inputSample * hiquadE[biq_a1]) - (outSample * hiquadE[biq_b1]) + hiquadE[biq_sL2];
hiquadE[biq_sL2] = (inputSample * hiquadE[biq_a2]) - (outSample * hiquadE[biq_b2]);
inputSample = outSample;
outSample = (inputSample * hiquadF[biq_a0]) + hiquadF[biq_sL1];
hiquadF[biq_sL1] = (inputSample * hiquadF[biq_a1]) - (outSample * hiquadF[biq_b1]) + hiquadF[biq_sL2];
hiquadF[biq_sL2] = (inputSample * hiquadF[biq_a2]) - (outSample * hiquadF[biq_b2]);
inputSample = outSample;
outSample = (inputSample * hiquadG[biq_a0]) + hiquadG[biq_sL1];
hiquadG[biq_sL1] = (inputSample * hiquadG[biq_a1]) - (outSample * hiquadG[biq_b1]) + hiquadG[biq_sL2];
hiquadG[biq_sL2] = (inputSample * hiquadG[biq_a2]) - (outSample * hiquadG[biq_b2]);
inputSample = outSample;
inputSample = (drySample - inputSample);
biquadA[biq_a0] = (biquadA[biq_aA0]*temp)+(biquadA[biq_aB0]*(1.0-temp));
biquadA[biq_a1] = (biquadA[biq_aA1]*temp)+(biquadA[biq_aB1]*(1.0-temp));
biquadA[biq_a2] = (biquadA[biq_aA2]*temp)+(biquadA[biq_aB2]*(1.0-temp));
biquadA[biq_b1] = (biquadA[biq_bA1]*temp)+(biquadA[biq_bB1]*(1.0-temp));
biquadA[biq_b2] = (biquadA[biq_bA2]*temp)+(biquadA[biq_bB2]*(1.0-temp));
biquadB[biq_a0] = (biquadB[biq_aA0]*temp)+(biquadB[biq_aB0]*(1.0-temp));
biquadB[biq_a1] = (biquadB[biq_aA1]*temp)+(biquadB[biq_aB1]*(1.0-temp));
biquadB[biq_a2] = (biquadB[biq_aA2]*temp)+(biquadB[biq_aB2]*(1.0-temp));
biquadB[biq_b1] = (biquadB[biq_bA1]*temp)+(biquadB[biq_bB1]*(1.0-temp));
biquadB[biq_b2] = (biquadB[biq_bA2]*temp)+(biquadB[biq_bB2]*(1.0-temp));
biquadC[biq_a0] = (biquadC[biq_aA0]*temp)+(biquadC[biq_aB0]*(1.0-temp));
biquadC[biq_a1] = (biquadC[biq_aA1]*temp)+(biquadC[biq_aB1]*(1.0-temp));
biquadC[biq_a2] = (biquadC[biq_aA2]*temp)+(biquadC[biq_aB2]*(1.0-temp));
biquadC[biq_b1] = (biquadC[biq_bA1]*temp)+(biquadC[biq_bB1]*(1.0-temp));
biquadC[biq_b2] = (biquadC[biq_bA2]*temp)+(biquadC[biq_bB2]*(1.0-temp));
biquadD[biq_a0] = (biquadD[biq_aA0]*temp)+(biquadD[biq_aB0]*(1.0-temp));
biquadD[biq_a1] = (biquadD[biq_aA1]*temp)+(biquadD[biq_aB1]*(1.0-temp));
biquadD[biq_a2] = (biquadD[biq_aA2]*temp)+(biquadD[biq_aB2]*(1.0-temp));
biquadD[biq_b1] = (biquadD[biq_bA1]*temp)+(biquadD[biq_bB1]*(1.0-temp));
biquadD[biq_b2] = (biquadD[biq_bA2]*temp)+(biquadD[biq_bB2]*(1.0-temp));
biquadE[biq_a0] = (biquadE[biq_aA0]*temp)+(biquadE[biq_aB0]*(1.0-temp));
biquadE[biq_a1] = (biquadE[biq_aA1]*temp)+(biquadE[biq_aB1]*(1.0-temp));
biquadE[biq_a2] = (biquadE[biq_aA2]*temp)+(biquadE[biq_aB2]*(1.0-temp));
biquadE[biq_b1] = (biquadE[biq_bA1]*temp)+(biquadE[biq_bB1]*(1.0-temp));
biquadE[biq_b2] = (biquadE[biq_bA2]*temp)+(biquadE[biq_bB2]*(1.0-temp));
biquadF[biq_a0] = (biquadF[biq_aA0]*temp)+(biquadF[biq_aB0]*(1.0-temp));
biquadF[biq_a1] = (biquadF[biq_aA1]*temp)+(biquadF[biq_aB1]*(1.0-temp));
biquadF[biq_a2] = (biquadF[biq_aA2]*temp)+(biquadF[biq_aB2]*(1.0-temp));
biquadF[biq_b1] = (biquadF[biq_bA1]*temp)+(biquadF[biq_bB1]*(1.0-temp));
biquadF[biq_b2] = (biquadF[biq_bA2]*temp)+(biquadF[biq_bB2]*(1.0-temp));
biquadG[biq_a0] = (biquadG[biq_aA0]*temp)+(biquadG[biq_aB0]*(1.0-temp));
biquadG[biq_a1] = (biquadG[biq_aA1]*temp)+(biquadG[biq_aB1]*(1.0-temp));
biquadG[biq_a2] = (biquadG[biq_aA2]*temp)+(biquadG[biq_aB2]*(1.0-temp));
biquadG[biq_b1] = (biquadG[biq_bA1]*temp)+(biquadG[biq_bB1]*(1.0-temp));
biquadG[biq_b2] = (biquadG[biq_bA2]*temp)+(biquadG[biq_bB2]*(1.0-temp));
//this is the interpolation code for the biquad
outSample = (inputSample * biquadA[biq_a0]) + biquadA[biq_sL1];
biquadA[biq_sL1] = (inputSample * biquadA[biq_a1]) - (outSample * biquadA[biq_b1]) + biquadA[biq_sL2];
biquadA[biq_sL2] = (inputSample * biquadA[biq_a2]) - (outSample * biquadA[biq_b2]);
inputSample = outSample;
outSample = (inputSample * biquadB[biq_a0]) + biquadB[biq_sL1];
biquadB[biq_sL1] = (inputSample * biquadB[biq_a1]) - (outSample * biquadB[biq_b1]) + biquadB[biq_sL2];
biquadB[biq_sL2] = (inputSample * biquadB[biq_a2]) - (outSample * biquadB[biq_b2]);
inputSample = outSample;
outSample = (inputSample * biquadC[biq_a0]) + biquadC[biq_sL1];
biquadC[biq_sL1] = (inputSample * biquadC[biq_a1]) - (outSample * biquadC[biq_b1]) + biquadC[biq_sL2];
biquadC[biq_sL2] = (inputSample * biquadC[biq_a2]) - (outSample * biquadC[biq_b2]);
inputSample = outSample;
outSample = (inputSample * biquadD[biq_a0]) + biquadD[biq_sL1];
biquadD[biq_sL1] = (inputSample * biquadD[biq_a1]) - (outSample * biquadD[biq_b1]) + biquadD[biq_sL2];
biquadD[biq_sL2] = (inputSample * biquadD[biq_a2]) - (outSample * biquadD[biq_b2]);
inputSample = outSample;
outSample = (inputSample * biquadE[biq_a0]) + biquadE[biq_sL1];
biquadE[biq_sL1] = (inputSample * biquadE[biq_a1]) - (outSample * biquadE[biq_b1]) + biquadE[biq_sL2];
biquadE[biq_sL2] = (inputSample * biquadE[biq_a2]) - (outSample * biquadE[biq_b2]);
inputSample = outSample;
outSample = (inputSample * biquadF[biq_a0]) + biquadF[biq_sL1];
biquadF[biq_sL1] = (inputSample * biquadF[biq_a1]) - (outSample * biquadF[biq_b1]) + biquadF[biq_sL2];
biquadF[biq_sL2] = (inputSample * biquadF[biq_a2]) - (outSample * biquadF[biq_b2]);
inputSample = outSample;
outSample = (inputSample * biquadG[biq_a0]) + biquadG[biq_sL1];
biquadG[biq_sL1] = (inputSample * biquadG[biq_a1]) - (outSample * biquadG[biq_b1]) + biquadG[biq_sL2];
biquadG[biq_sL2] = (inputSample * biquadG[biq_a2]) - (outSample * biquadG[biq_b2]);
inputSample = outSample;
//begin ClipOnly2 as a little, compressed chunk that can be dropped into code
if (inputSample > 4.0) inputSample = 4.0; if (inputSample < -4.0) inputSample = -4.0;
if (wasPosClipL == true) { //current will be over
if (inputSample<lastSampleL) lastSampleL=0.7058208+(inputSample*0.2609148);
else lastSampleL = 0.2491717+(lastSampleL*0.7390851);
} wasPosClipL = false;
if (inputSample>0.9549925859) {wasPosClipL=true;inputSample=0.7058208+(lastSampleL*0.2609148);}
if (wasNegClipL == true) { //current will be -over
if (inputSample > lastSampleL) lastSampleL=-0.7058208+(inputSample*0.2609148);
else lastSampleL=-0.2491717+(lastSampleL*0.7390851);
} wasNegClipL = false;
if (inputSample<-0.9549925859) {wasNegClipL=true;inputSample=-0.7058208+(lastSampleL*0.2609148);}
intermediateL[spacing] = inputSample;
inputSample = lastSampleL; //Latency is however many samples equals one 44.1k sample
for (int x = spacing; x > 0; x--) intermediateL[x-1] = intermediateL[x];
lastSampleL = intermediateL[0]; //run a little buffer to handle this
//end ClipOnly2 as a little, compressed chunk that can be dropped into code
//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;
}
}
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