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airwindows/plugins/MacAU/ConsoleMDChannel/ConsoleMDChannel.cpp
Christopher Johnson 743c48d6c6 ConsoleMD
2023-10-30 21:19:27 -04:00

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/*
* File: ConsoleMDChannel.cpp
*
* Version: 1.0
*
* Created: 10/30/23
*
* Copyright: Copyright © 2023 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.
*
*/
/*=============================================================================
ConsoleMDChannel.cpp
=============================================================================*/
#include "ConsoleMDChannel.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
COMPONENT_ENTRY(ConsoleMDChannel)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ConsoleMDChannel::ConsoleMDChannel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ConsoleMDChannel::ConsoleMDChannel(AudioUnit component)
: AUEffectBase(component)
{
CreateElements();
Globals()->UseIndexedParameters(kNumberOfParameters);
SetParameter(kParam_One, kDefaultValue_ParamOne );
SetParameter(kParam_Two, kDefaultValue_ParamTwo );
SetParameter(kParam_Three, kDefaultValue_ParamThree );
SetParameter(kParam_Four, kDefaultValue_ParamFour );
SetParameter(kParam_Five, kDefaultValue_ParamFive );
SetParameter(kParam_Six, kDefaultValue_ParamSix );
#if AU_DEBUG_DISPATCHER
mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ConsoleMDChannel::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult ConsoleMDChannel::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ConsoleMDChannel::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult ConsoleMDChannel::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 = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamTwo;
break;
case kParam_Three:
AUBase::FillInParameterName (outParameterInfo, kParameterThreeName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamThree;
break;
case kParam_Four:
AUBase::FillInParameterName (outParameterInfo, kParameterFourName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamFour;
break;
case kParam_Five:
AUBase::FillInParameterName (outParameterInfo, kParameterFiveName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamFive;
break;
case kParam_Six:
AUBase::FillInParameterName (outParameterInfo, kParameterSixName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamSix;
break;
default:
result = kAudioUnitErr_InvalidParameter;
break;
}
} else {
result = kAudioUnitErr_InvalidParameter;
}
return result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ConsoleMDChannel::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult ConsoleMDChannel::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// state that plugin supports only stereo-in/stereo-out processing
UInt32 ConsoleMDChannel::SupportedNumChannels(const AUChannelInfo ** outInfo)
{
if (outInfo != NULL)
{
static AUChannelInfo info;
info.inChannels = 2;
info.outChannels = 2;
*outInfo = &info;
}
return 1;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ConsoleMDChannel::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult ConsoleMDChannel::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// ConsoleMDChannel::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult ConsoleMDChannel::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____ConsoleMDChannelEffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ConsoleMDChannel::ConsoleMDChannelKernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult ConsoleMDChannel::Reset(AudioUnitScope inScope, AudioUnitElement inElement)
{
for (int x = 0; x < 17; x++) pearA[x] = 0.0;
for (int x = 0; x < 21; x++) pearB[x] = 0.0;
for(int count = 0; count < 2004; count++) {mpkL[count] = 0.0; mpkR[count] = 0.0;}
for(int count = 0; count < 65; count++) {f[count] = 0.0;}
prevfreqMPeak = -1;
prevamountMPeak = -1;
mpc = 1;
bassA = bassB = 0.0;
gainA = gainB = 1.0;
fpdL = 1.0; while (fpdL < 16386) fpdL = rand()*UINT32_MAX;
fpdR = 1.0; while (fpdR < 16386) fpdR = rand()*UINT32_MAX;
return noErr;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ConsoleMDChannel::ProcessBufferLists
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
OSStatus ConsoleMDChannel::ProcessBufferLists(AudioUnitRenderActionFlags & ioActionFlags,
const AudioBufferList & inBuffer,
AudioBufferList & outBuffer,
UInt32 inFramesToProcess)
{
Float32 * inputL = (Float32*)(inBuffer.mBuffers[0].mData);
Float32 * inputR = (Float32*)(inBuffer.mBuffers[1].mData);
Float32 * outputL = (Float32*)(outBuffer.mBuffers[0].mData);
Float32 * outputR = (Float32*)(outBuffer.mBuffers[1].mData);
UInt32 nSampleFrames = inFramesToProcess;
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= GetSampleRate(); //will be over 1.0848 when over 48k
int cycleEnd = floor(overallscale);
if (cycleEnd < 1) cycleEnd = 1;
if (cycleEnd > 3) cycleEnd = 3;
double fatTreble = (GetParameter( kParam_One )*6.0)-3.0;
bassA = bassB;
bassB = (GetParameter( kParam_Four )*6.0)-3.0;
//these should stack to go up to -3.0 to 3.0
if (fatTreble < 0.0) fatTreble /= 3.0;
if (bassB < 0.0) bassB /= 3.0;
//and then become -1.0 to 3.0;
//there will be successive sin/cos stages w. dry/wet in these
double freqTreble = 0.853;
double freqMid = 0.026912;
switch (cycleEnd)
{
case 1: //base sample rate, no change
break;
case 2: //96k tier
freqTreble = 0.4265;
freqMid = 0.013456;
break;
case 3: //192k tier
freqTreble = 0.21325;
freqMid = 0.006728;
break;
}
//begin ResEQ2 Mid Boost
double freqMPeak = pow(GetParameter( kParam_Two )+0.16,3);
double amountMPeak = pow(GetParameter( kParam_Three ),2);
int maxMPeak = (amountMPeak*63.0)+1;
if ((freqMPeak != prevfreqMPeak)||(amountMPeak != prevamountMPeak)) {
for (int x = 0; x < maxMPeak; x++) {
if (((double)x*freqMPeak) < M_PI_4) f[x] = sin(((double)x*freqMPeak)*4.0)*freqMPeak*sin(((double)(maxMPeak-x)/(double)maxMPeak)*M_PI_2);
else f[x] = cos((double)x*freqMPeak)*freqMPeak*sin(((double)(maxMPeak-x)/(double)maxMPeak)*M_PI_2);
}
prevfreqMPeak = freqMPeak; prevamountMPeak = amountMPeak;
}//end ResEQ2 Mid Boost
int bitshiftL = 0;
int bitshiftR = 0;
double panControl = (GetParameter( kParam_Five )*2.0)-1.0; //-1.0 to 1.0
double panAttenuation = (1.0-fabs(panControl));
int panBits = 20; //start centered
if (panAttenuation > 0.0) panBits = floor(1.0 / panAttenuation);
if (panControl > 0.25) bitshiftL += panBits;
if (panControl < -0.25) bitshiftR += panBits;
if (bitshiftL < 0) bitshiftL = 0; if (bitshiftL > 17) bitshiftL = 17;
if (bitshiftR < 0) bitshiftR = 0; if (bitshiftR > 17) bitshiftR = 17;
double gainL = 1.0;
double gainR = 1.0;
switch (bitshiftL)
{
case 17: gainL = 0.0; break;
case 16: gainL = 0.0000152587890625; break;
case 15: gainL = 0.000030517578125; break;
case 14: gainL = 0.00006103515625; break;
case 13: gainL = 0.0001220703125; break;
case 12: gainL = 0.000244140625; break;
case 11: gainL = 0.00048828125; break;
case 10: gainL = 0.0009765625; break;
case 9: gainL = 0.001953125; break;
case 8: gainL = 0.00390625; break;
case 7: gainL = 0.0078125; break;
case 6: gainL = 0.015625; break;
case 5: gainL = 0.03125; break;
case 4: gainL = 0.0625; break;
case 3: gainL = 0.125; break;
case 2: gainL = 0.25; break;
case 1: gainL = 0.5; break;
case 0: break;
}
switch (bitshiftR)
{
case 17: gainR = 0.0; break;
case 16: gainR = 0.0000152587890625; break;
case 15: gainR = 0.000030517578125; break;
case 14: gainR = 0.00006103515625; break;
case 13: gainR = 0.0001220703125; break;
case 12: gainR = 0.000244140625; break;
case 11: gainR = 0.00048828125; break;
case 10: gainR = 0.0009765625; break;
case 9: gainR = 0.001953125; break;
case 8: gainR = 0.00390625; break;
case 7: gainR = 0.0078125; break;
case 6: gainR = 0.015625; break;
case 5: gainR = 0.03125; break;
case 4: gainR = 0.0625; break;
case 3: gainR = 0.125; break;
case 2: gainR = 0.25; break;
case 1: gainR = 0.5; break;
case 0: break;
}
gainA = gainB;
gainB = GetParameter( kParam_Six )*2.0; //smoothed master fader from Z2 filters
//BitShiftGain pre gain trim goes here
while (nSampleFrames-- > 0) {
double inputSampleL = *inputL;
double inputSampleR = *inputR;
if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
double temp = (double)nSampleFrames/inFramesToProcess;
double gain = (gainA*temp)+(gainB*(1.0-temp));
double bass = (bassA*temp)+(bassB*(1.0-temp));
inputSampleL *= gain;
inputSampleR *= gain;
//for MCI consoles, the fader is before the EQ, which overdrives easily.
//so we put the main fader here.
//begin Pear filter stages
double bassL = inputSampleL;
double bassR = inputSampleR;
double slew = ((bassL - pearA[0]) + pearA[1])*freqTreble*0.5;
pearA[0] = bassL = (freqTreble * bassL) + ((1.0-freqTreble) * (pearA[0] + pearA[1]));
pearA[1] = slew; slew = ((bassR - pearA[2]) + pearA[3])*freqTreble*0.5;
pearA[2] = bassR = (freqTreble * bassR) + ((1.0-freqTreble) * (pearA[2] + pearA[3]));
pearA[3] = slew; slew = ((bassL - pearA[4]) + pearA[5])*freqTreble*0.5;
pearA[4] = bassL = (freqTreble * bassL) + ((1.0-freqTreble) * (pearA[4] + pearA[5]));
pearA[5] = slew; slew = ((bassR - pearA[6]) + pearA[7])*freqTreble*0.5;
pearA[6] = bassR = (freqTreble * bassR) + ((1.0-freqTreble) * (pearA[6] + pearA[7]));
pearA[7] = slew; slew = ((bassL - pearA[8]) + pearA[9])*freqTreble*0.5;
pearA[8] = bassL = (freqTreble * bassL) + ((1.0-freqTreble) * (pearA[8] + pearA[9]));
pearA[9] = slew; slew = ((bassR - pearA[10]) + pearA[11])*freqTreble*0.5;
pearA[10] = bassR = (freqTreble * bassR) + ((1.0-freqTreble) * (pearA[10] + pearA[11]));
pearA[11] = slew; slew = ((bassL - pearA[12]) + pearA[13])*freqTreble*0.5;
pearA[12] = bassL = (freqTreble * bassL) + ((1.0-freqTreble) * (pearA[12] + pearA[13]));
pearA[13] = slew; slew = ((bassR - pearA[14]) + pearA[15])*freqTreble*0.5;
pearA[14] = bassR = (freqTreble * bassR) + ((1.0-freqTreble) * (pearA[14] + pearA[15]));
pearA[15] = slew;
//unrolled mid/treble crossover (called bass to use fewer variables)
double trebleL = inputSampleL - bassL; inputSampleL = bassL;
double trebleR = inputSampleR - bassR; inputSampleR = bassR;
//at this point 'bass' is actually still mid and bass
slew = ((bassL - pearB[0]) + pearB[1])*freqMid*0.5;
pearB[0] = bassL = (freqMid * bassL) + ((1.0-freqMid) * (pearB[0] + pearB[1]));
pearB[1] = slew; slew = ((bassR - pearB[2]) + pearB[3])*freqMid*0.5;
pearB[2] = bassR = (freqMid * bassR) + ((1.0-freqMid) * (pearB[2] + pearB[3]));
pearB[3] = slew; slew = ((bassL - pearB[4]) + pearB[5])*freqMid*0.5;
pearB[4] = bassL = (freqMid * bassL) + ((1.0-freqMid) * (pearB[4] + pearB[5]));
pearB[5] = slew; slew = ((bassR - pearB[6]) + pearB[7])*freqMid*0.5;
pearB[6] = bassR = (freqMid * bassR) + ((1.0-freqMid) * (pearB[6] + pearB[7]));
pearB[7] = slew; slew = ((bassL - pearB[8]) + pearB[9])*freqMid*0.5;
pearB[8] = bassL = (freqMid * bassL) + ((1.0-freqMid) * (pearB[8] + pearB[9]));
pearB[9] = slew; slew = ((bassR - pearB[10]) + pearB[11])*freqMid*0.5;
pearB[10] = bassR = (freqMid * bassR) + ((1.0-freqMid) * (pearB[10] + pearB[11]));
pearB[11] = slew; slew = ((bassL - pearB[12]) + pearB[13])*freqMid*0.5;
pearB[12] = bassL = (freqMid * bassL) + ((1.0-freqMid) * (pearB[12] + pearB[13]));
pearB[13] = slew; slew = ((bassR - pearB[14]) + pearB[15])*freqMid*0.5;
pearB[14] = bassR = (freqMid * bassR) + ((1.0-freqMid) * (pearB[14] + pearB[15]));
pearB[15] = slew; slew = ((bassL - pearB[16]) + pearB[17])*freqMid*0.5;
pearB[16] = bassL = (freqMid * bassL) + ((1.0-freqMid) * (pearB[16] + pearB[17]));
pearB[17] = slew; slew = ((bassR - pearB[18]) + pearB[19])*freqMid*0.5;
pearB[18] = bassR = (freqMid * bassR) + ((1.0-freqMid) * (pearB[18] + pearB[19]));
pearB[19] = slew;
double midL = inputSampleL - bassL;
double midR = inputSampleR - bassR;
//we now have three bands out of two pear filters
double w = 0.0; //filter into bands, apply the sin/cos to each band
if (fatTreble > 0.0) {
w = fatTreble; if (w > 1.0) w = 1.0;
trebleL = (trebleL*(1.0-w)) + (sin(trebleL*M_PI_2)*w);
trebleR = (trebleR*(1.0-w)) + (sin(trebleR*M_PI_2)*w);
if (fatTreble > 1.0) {
w = fatTreble-1.0; if (w > 1.0) w = 1.0;
trebleL = (trebleL*(1.0-w)) + (sin(trebleL*M_PI_2)*w);
trebleR = (trebleR*(1.0-w)) + (sin(trebleR*M_PI_2)*w);
if (fatTreble > 2.0) {
w = fatTreble-2.0;
trebleL = (trebleL*(1.0-w)) + (sin(trebleL*M_PI_2)*w);
trebleR = (trebleR*(1.0-w)) + (sin(trebleR*M_PI_2)*w);
} //sine stages for EQ or compression
}
}
if (fatTreble < 0.0) {
if (trebleL > 1.0) trebleL = 1.0; if (trebleL < -1.0) trebleL = -1.0;
if (trebleR > 1.0) trebleR = 1.0; if (trebleR < -1.0) trebleR = -1.0;
w = -fatTreble; if (w > 1.0) w = 1.0;
if (trebleL > 0) trebleL = (trebleL*(1.0-w))+((1.0-cos(trebleL))*sin(w));
else trebleL = (trebleL*(1.0-w))+((-1.0+cos(-trebleL))*sin(w));
if (trebleR > 0) trebleR = (trebleR*(1.0-w))+((1.0-cos(trebleR))*sin(w));
else trebleR = (trebleR*(1.0-w))+((-1.0+cos(-trebleR))*sin(w));
} //cosine stages for EQ or expansion
//begin ResEQ2 Mid Boost
mpc++; if (mpc < 1 || mpc > 2001) mpc = 1;
mpkL[mpc] = midL;
mpkR[mpc] = midR;
double midMPeakL = 0.0;
double midMPeakR = 0.0;
for (int x = 0; x < maxMPeak; x++) {
int y = x*cycleEnd;
switch (cycleEnd)
{
case 1:
midMPeakL += (mpkL[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x]);
midMPeakR += (mpkR[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x]); break;
case 2:
midMPeakL += ((mpkL[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.5);
midMPeakR += ((mpkR[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.5); y--;
midMPeakL += ((mpkL[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.5);
midMPeakR += ((mpkR[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.5); break;
case 3:
midMPeakL += ((mpkL[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.333);
midMPeakR += ((mpkR[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.333); y--;
midMPeakL += ((mpkL[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.333);
midMPeakR += ((mpkR[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.333); y--;
midMPeakL += ((mpkL[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.333);
midMPeakR += ((mpkR[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.333); break;
case 4:
midMPeakL += ((mpkL[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.25);
midMPeakR += ((mpkR[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.25); y--;
midMPeakL += ((mpkL[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.25);
midMPeakR += ((mpkR[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.25); y--;
midMPeakL += ((mpkL[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.25);
midMPeakR += ((mpkR[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.25); y--;
midMPeakL += ((mpkL[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.25);
midMPeakR += ((mpkR[(mpc-y)+((mpc-y < 1)?2001:0)] * f[x])*0.25); //break
}
}
midL = (midMPeakL*amountMPeak)+((1.5-amountMPeak>1.0)?midL:midL*(1.5-amountMPeak));
midR = (midMPeakR*amountMPeak)+((1.5-amountMPeak>1.0)?midR:midR*(1.5-amountMPeak));
//end ResEQ2 Mid Boost
if (bassL > 1.0) bassL = 1.0; if (bassL < -1.0) bassL = -1.0;
if (bassR > 1.0) bassR = 1.0; if (bassR < -1.0) bassR = -1.0;
if (bass > 0.0) {
w = bass; if (w > 1.0) w = 1.0;
bassL = (bassL*(1.0-w)) + (sin(bassL*M_PI_2)*w*1.6);
bassR = (bassR*(1.0-w)) + (sin(bassR*M_PI_2)*w*1.6);
if (bass > 1.0) {
w = bass-1.0; if (w > 1.0) w = 1.0;
bassL = (bassL*(1.0-w)) + (sin(bassL*M_PI_2)*w*1.4);
bassR = (bassR*(1.0-w)) + (sin(bassR*M_PI_2)*w*1.4);
if (bass > 2.0) {
w = bass-2.0;
bassL = (bassL*(1.0-w)) + (sin(bassL*M_PI_2)*w*1.2);
bassR = (bassR*(1.0-w)) + (sin(bassR*M_PI_2)*w*1.2);
} //sine stages for EQ or compression
}
}
if (bass < 0.0) {
w = -bass; if (w > 1.0) w = 1.0;
if (bassL > 0) bassL = (bassL*(1.0-w))+((1.0-cos(bassL))*sin(w));
else bassL = (bassL*(1.0-w))+((-1.0+cos(-bassL))*sin(w));
if (bassR > 0) bassR = (bassR*(1.0-w))+((1.0-cos(bassR))*sin(w));
else bassR = (bassR*(1.0-w))+((-1.0+cos(-bassR))*sin(w));
} //cosine stages for EQ or expansion
//the sin() is further restricting output when fully attenuated
inputSampleL = (bassL + midL + trebleL)*gainL;
inputSampleR = (bassR + midR + trebleR)*gainR;
//applies BitShiftPan pan section
//begin sin() style Channel processing
if (inputSampleL > 1.57079633) inputSampleL = 1.57079633;
if (inputSampleL < -1.57079633) inputSampleL = -1.57079633;
if (inputSampleR > 1.57079633) inputSampleR = 1.57079633;
if (inputSampleR < -1.57079633) inputSampleR = -1.57079633;
inputSampleL = sin(inputSampleL);
inputSampleR = sin(inputSampleR);
//begin 32 bit stereo floating point dither
int expon; frexpf((float)inputSampleL, &expon);
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
frexpf((float)inputSampleR, &expon);
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
//end 32 bit stereo floating point dither
*outputL = inputSampleL;
*outputR = inputSampleR;
//direct stereo out
inputL += 1;
inputR += 1;
outputL += 1;
outputR += 1;
}
return noErr;
}
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