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airwindows/plugins/MacSignedAU/TripleSpread/TripleSpread.cpp
Christopher Johnson f06250c082 Clarifying Licensing in boilerplate code generation
2022-11-21 09:20:21 -05:00

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/*
* File: TripleSpread.cpp
*
* Version: 1.0
*
* Created: 10/2/20
*
* Copyright: Copyright © 2020 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.
*
*/
/*=============================================================================
TripleSpread.cpp
=============================================================================*/
#include "TripleSpread.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
AUDIOCOMPONENT_ENTRY(AUBaseFactory, TripleSpread)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// TripleSpread::TripleSpread
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
TripleSpread::TripleSpread(AudioUnit component)
: AUEffectBase(component)
{
CreateElements();
Globals()->UseIndexedParameters(kNumberOfParameters);
SetParameter(kParam_One, kDefaultValue_ParamOne );
SetParameter(kParam_Two, kDefaultValue_ParamTwo );
SetParameter(kParam_Three, kDefaultValue_ParamThree );
#if AU_DEBUG_DISPATCHER
mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// TripleSpread::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult TripleSpread::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// TripleSpread::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult TripleSpread::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 = -1.0;
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;
default:
result = kAudioUnitErr_InvalidParameter;
break;
}
} else {
result = kAudioUnitErr_InvalidParameter;
}
return result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// TripleSpread::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult TripleSpread::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 TripleSpread::SupportedNumChannels(const AUChannelInfo ** outInfo)
{
if (outInfo != NULL)
{
static AUChannelInfo info;
info.inChannels = 2;
info.outChannels = 2;
*outInfo = &info;
}
return 1;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// TripleSpread::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult TripleSpread::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// TripleSpread::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult TripleSpread::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____TripleSpreadEffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// TripleSpread::TripleSpreadKernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult TripleSpread::Reset(AudioUnitScope inScope, AudioUnitElement inElement)
{
for (int count = 0; count < 131074; count++) {pL[count] = 0; pR[count] = 0;}
for (int count = 0; count < 257; count++) {
offsetL[count] = 0; pastzeroL[count] = 0; previousL[count] = 0; thirdL[count] = 0; fourthL[count] = 0;
offsetR[count] = 0; pastzeroR[count] = 0; previousR[count] = 0; thirdR[count] = 0; fourthR[count] = 0;
}
crossesL = 0;
realzeroesL = 0;
tempL = 0;
lasttempL = 0;
thirdtempL = 0;
fourthtempL = 0;
sincezerocrossL = 0;
airPrevL = 0.0;
airEvenL = 0.0;
airOddL = 0.0;
airFactorL = 0.0;
positionL = 0.0;
splicingL = false;
crossesR = 0;
realzeroesR = 0;
tempR = 0;
lasttempR = 0;
thirdtempR = 0;
fourthtempR = 0;
sincezerocrossR = 0;
airPrevR = 0.0;
airEvenR = 0.0;
airOddR = 0.0;
airFactorR = 0.0;
positionR = 0.0;
splicingR = false;
gcount = 0;
lastwidth = 16386;
flip = false;
fpdL = 1.0; while (fpdL < 16386) fpdL = rand()*UINT32_MAX;
fpdR = 1.0; while (fpdR < 16386) fpdR = rand()*UINT32_MAX;
return noErr;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// TripleSpread::ProcessBufferLists
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
OSStatus TripleSpread::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;
Float64 speed = GetParameter( kParam_One )*0.041666666666667;
SInt32 width = (SInt32)(65536-((1-pow(1-GetParameter( kParam_Two ),2))*65530.0));
Float64 bias = pow(GetParameter( kParam_Two ),3);
Float64 wet = GetParameter( kParam_Three );
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 drySampleL = inputSampleL;
double drySampleR = inputSampleR;
airFactorL = airPrevL - inputSampleL;
if (flip) {airEvenL += airFactorL; airOddL -= airFactorL; airFactorL = airEvenL;}
else {airOddL += airFactorL; airEvenL -= airFactorL; airFactorL = airOddL;}
airOddL = (airOddL - ((airOddL - airEvenL)/256.0)) / 1.0001;
airEvenL = (airEvenL - ((airEvenL - airOddL)/256.0)) / 1.0001;
airPrevL = inputSampleL;
inputSampleL += airFactorL;
airFactorR = airPrevR - inputSampleR;
if (flip) {airEvenR += airFactorR; airOddR -= airFactorR; airFactorR = airEvenR;}
else {airOddR += airFactorR; airEvenR -= airFactorR; airFactorR = airOddR;}
airOddR = (airOddR - ((airOddR - airEvenR)/256.0)) / 1.0001;
airEvenR = (airEvenR - ((airEvenR - airOddR)/256.0)) / 1.0001;
airPrevR = inputSampleR;
inputSampleR += airFactorR;
flip = !flip;
//air, compensates for loss of highs of interpolation
if (lastwidth != width){crossesL = 0; realzeroesL = 0; crossesR = 0; realzeroesR = 0; lastwidth = width;}
//global: changing this resets both channels
gcount++;
if (gcount < 0 || gcount > width) {gcount = 0;}
int count = gcount;
int countone = count-1;
int counttwo = count-2;
while (count < 0){count += width;}
while (countone < 0){countone += width;}
while (counttwo < 0){counttwo += width;}
while (count > width){count -= width;} //this can only happen with very insane variables
while (countone > width){countone -= width;}
while (counttwo > width){counttwo -= width;}
//yay sanity checks
//now we have counts zero, one, two, none of which have sanity checked values
//we are tracking most recent samples and must SUBTRACT.
//this is a wrap on the overall buffers, so count, one and two are also common to both channels
pL[count+width] = pL[count] = (int)((inputSampleL*8388352.0));
pR[count+width] = pR[count] = (int)((inputSampleR*8388352.0));
//double buffer -8388352 to 8388352 is equal to 24 bit linear space
if ((pL[countone] > 0 && pL[count] < 0)||(pL[countone] < 0 && pL[count] > 0)) //source crossed zero
{
crossesL++;
realzeroesL++;
if (crossesL > 256) {crossesL = 0;} //wrap crosses to keep adding new crosses
if (realzeroesL > 256) {realzeroesL = 256;} //don't wrap realzeroes, full buffer, use all
offsetL[crossesL] = count;
pastzeroL[crossesL] = pL[count];
previousL[crossesL] = pL[countone];
thirdL[crossesL] = pL[counttwo];
//we load the zero crosses register with crosses to examine
} //we just put in a source zero cross in the registry
if ((pR[countone] > 0 && pR[count] < 0)||(pR[countone] < 0 && pR[count] > 0)) //source crossed zero
{
crossesR++;
realzeroesR++;
if (crossesR > 256) {crossesR = 0;} //wrap crosses to keep adding new crosses
if (realzeroesR > 256) {realzeroesR = 256;} //don't wrap realzeroes, full buffer, use all
offsetR[crossesR] = count;
pastzeroR[crossesR] = pR[count];
previousR[crossesR] = pR[countone];
thirdR[crossesR] = pR[counttwo];
//we load the zero crosses register with crosses to examine
} //we just put in a source zero cross in the registry
//in this we don't update count at all, so we can run them one after another because this is
//feeding the system, not tracking the output of two parallel but non-matching output taps
positionL -= speed; //this is individual to each channel!
if (positionL > width) { //we just caught up to the buffer end
if (realzeroesL > 0) { //we just caught up to the buffer end with zero crosses in the bin
positionL = 0;
double diff = 99999999.0;
int best = 0; //these can be local, I think
int scan;
for(scan = (realzeroesL-1); scan >= 0; scan--) {
int scanone = scan + crossesL;
if (scanone > 256){scanone -= 256;}
//try to track the real most recent ones more closely
double howdiff = (double)((tempL - pastzeroL[scanone]) + (lasttempL - previousL[scanone]) + (thirdtempL - thirdL[scanone]) + (fourthtempL - fourthL[scanone]));
//got difference factor between things
howdiff -= (double)(scan*bias);
//try to bias in favor of more recent crosses
if (howdiff < diff) {diff = howdiff; best = scanone;}
} //now we have 'best' as the closest match to the current rate of zero cross and positioning- a splice.
positionL = offsetL[best]-sincezerocrossL;
crossesL = 0;
realzeroesL = 0;
splicingL = true; //we just kicked the delay tap back, changing positionL
} else { //we just caught up to the buffer end with no crosses- glitch speeds.
positionL -= width;
crossesL = 0;
realzeroesL = 0;
splicingL = true; //so, hard splice it.
}
}
if (positionL < 0) { //we just caught up to the dry tap.
if (realzeroesL > 0) { //we just caught up to the dry tap with zero crosses in the bin
positionL = 0;
double diff = 99999999.0;
int best = 0; //these can be local, I think
int scan;
for(scan = (realzeroesL-1); scan >= 0; scan--) {
int scanone = scan + crossesL;
if (scanone > 256){scanone -= 256;}
//try to track the real most recent ones more closely
double howdiff = (double)((tempL - pastzeroL[scanone]) + (lasttempL - previousL[scanone]) + (thirdtempL - thirdL[scanone]) + (fourthtempL - fourthL[scanone]));
//got difference factor between things
howdiff -= (double)(scan*bias);
//try to bias in favor of more recent crosses
if (howdiff < diff) {diff = howdiff; best = scanone;}
} //now we have 'best' as the closest match to the current rate of zero cross and positioning- a splice.
positionL = offsetL[best]-sincezerocrossL;
crossesL = 0;
realzeroesL = 0;
splicingL = true; //we just kicked the delay tap back, changing positionL
} else { //we just caught up to the dry tap with no crosses- glitch speeds.
positionL += width;
crossesL = 0;
realzeroesL = 0;
splicingL = true; //so, hard splice it.
}
}
positionR += speed; //this is individual to each channel and inverted for R!
if (positionR > width) { //we just caught up to the buffer end
if (realzeroesR > 0) { //we just caught up to the buffer end with zero crosses in the bin
positionR = 0;
double diff = 99999999.0;
int best = 0; //these can be local, I think
int scan;
for(scan = (realzeroesR-1); scan >= 0; scan--) {
int scanone = scan + crossesR;
if (scanone > 256){scanone -= 256;}
//try to track the real most recent ones more closely
double howdiff = (double)((tempR - pastzeroR[scanone]) + (lasttempR - previousR[scanone]) + (thirdtempR - thirdR[scanone]) + (fourthtempR - fourthR[scanone]));
//got difference factor between things
howdiff -= (double)(scan*bias);
//try to bias in favor of more recent crosses
if (howdiff < diff) {diff = howdiff; best = scanone;}
} //now we have 'best' as the closest match to the current rate of zero cross and positioning- a splice.
positionR = offsetR[best]-sincezerocrossR;
crossesR = 0;
realzeroesR = 0;
splicingR = true; //we just kicked the delay tap back, changing positionL
} else { //we just caught up to the buffer end with no crosses- glitch speeds.
positionR -= width;
crossesR = 0;
realzeroesR = 0;
splicingR = true; //so, hard splice it.
}
}
if (positionR < 0) { //we just caught up to the dry tap.
if (realzeroesR > 0) { //we just caught up to the dry tap with zero crosses in the bin
positionR = 0;
double diff = 99999999.0;
int best = 0; //these can be local, I think
int scan;
for(scan = (realzeroesR-1); scan >= 0; scan--) {
int scanone = scan + crossesR;
if (scanone > 256){scanone -= 256;}
//try to track the real most recent ones more closely
double howdiff = (double)((tempR - pastzeroR[scanone]) + (lasttempR - previousR[scanone]) + (thirdtempR - thirdR[scanone]) + (fourthtempR - fourthR[scanone]));
//got difference factor between things
howdiff -= (double)(scan*bias);
//try to bias in favor of more recent crosses
if (howdiff < diff) {diff = howdiff; best = scanone;}
} //now we have 'best' as the closest match to the current rate of zero cross and positioning- a splice.
positionR = offsetR[best]-sincezerocrossR;
crossesR = 0;
realzeroesR = 0;
splicingR = true; //we just kicked the delay tap back, changing positionL
} else { //we just caught up to the dry tap with no crosses- glitch speeds.
positionR += width;
crossesR = 0;
realzeroesR = 0;
splicingR = true; //so, hard splice it.
}
}
count = gcount - (int)floor(positionL);
//we go back because the buffer goes forward this time
countone = count+1;
counttwo = count+2;
//now we have counts zero, one, two, none of which have sanity checked values
//we are interpolating, we ADD
while (count < 0){count += width;}
while (countone < 0){countone += width;}
while (counttwo < 0){counttwo += width;}
while (count > width){count -= width;} //this can only happen with very insane variables
while (countone > width){countone -= width;}
while (counttwo > width){counttwo -= width;}
//here's where we do our shift against the rotating buffer
tempL = 0;
tempL += (int)(pL[count] * (1-(positionL-floor(positionL)))); //less as value moves away from .0
tempL += pL[count+1]; //we can assume always using this in one way or another?
tempL += (int)(pL[count+2] * (positionL-floor(positionL))); //greater as value moves away from .0
tempL -= (int)(((pL[count]-pL[count+1])-(pL[count+1]-pL[count+2]))/50); //interpolation hacks 'r us
tempL /= 2; //gotta make temp be the same level scale as buffer
//now we have our delay tap, which is going to do our pitch shifting
if (abs(tempL) > 8388352.0){tempL = (lasttempL + (lasttempL - thirdtempL));}
//kill ticks of bad buffer mojo by sticking with the trajectory. Ugly hack *shrug*
sincezerocrossL++;
if (sincezerocrossL < 0 || sincezerocrossL > width){sincezerocrossL = 0;} //just a sanity check
if (splicingL){tempL = (tempL + (lasttempL + (lasttempL - thirdtempL)))/2; splicingL = false;}
//do a smoother transition by taking the sample of transition and going half with it
if ((lasttempL > 0 && tempL < 0)||(lasttempL < 0 && tempL > 0)) //delay tap crossed zero
{
sincezerocrossL = 0;
} //we just restarted counting from the delay tap zero cross
count = gcount - (int)floor(positionR);
//we go back because the buffer goes forward this time
countone = count+1;
counttwo = count+2;
//now we have counts zero, one, two, none of which have sanity checked values
//we are interpolating, we ADD
while (count < 0){count += width;}
while (countone < 0){countone += width;}
while (counttwo < 0){counttwo += width;}
while (count > width){count -= width;} //this can only happen with very insane variables
while (countone > width){countone -= width;}
while (counttwo > width){counttwo -= width;}
tempR = 0;
tempR += (int)(pR[count] * (1-(positionR-floor(positionR)))); //less as value moves away from .0
tempR += pR[count+1]; //we can assume always using this in one way or another?
tempR += (int)(pR[count+2] * (positionR-floor(positionR))); //greater as value moves away from .0
tempR -= (int)(((pR[count]-pR[count+1])-(pR[count+1]-pR[count+2]))/50); //interpolation hacks 'r us
tempR /= 2; //gotta make temp be the same level scale as buffer
//now we have our delay tap, which is going to do our pitch shifting
if (abs(tempR) > 8388352.0){tempR = (lasttempR + (lasttempR - thirdtempR));}
//kill ticks of bad buffer mojo by sticking with the trajectory. Ugly hack *shrug*
sincezerocrossR++;
if (sincezerocrossR < 0 || sincezerocrossR > width){sincezerocrossR = 0;} //just a sanity check
if (splicingR){tempR = (tempR + (lasttempR + (lasttempR - thirdtempR)))/2; splicingR = false;}
//do a smoother transition by taking the sample of transition and going half with it
if ((lasttempR > 0 && tempR < 0)||(lasttempR < 0 && tempR > 0)) //delay tap crossed zero
{
sincezerocrossR = 0;
} //we just restarted counting from the delay tap zero cross
fourthtempL = thirdtempL;
thirdtempL = lasttempL;
lasttempL = tempL;
fourthtempR = thirdtempR;
thirdtempR = lasttempR;
lasttempR = tempR;
double mid = (inputSampleL + inputSampleR)*(1-wet);
double side = inputSampleL - inputSampleR;
//assign mid and side.Between these sections, you can do mid/side processing
inputSampleL = (mid+side)/2.0;
inputSampleR = (mid-side)/2.0;
//unassign mid and side
inputSampleL = ( drySampleL * (1-wet))+((double)(tempL/(8388352.0))*wet);
if (inputSampleL > 4.0) inputSampleL = 4.0;
if (inputSampleL < -4.0) inputSampleL = -4.0;
inputSampleR = ( drySampleR * (1-wet))+((double)(tempR/(8388352.0))*wet);
if (inputSampleR > 4.0) inputSampleR = 4.0;
if (inputSampleR < -4.0) inputSampleR = -4.0;
//this plugin can throw insane outputs so we'll put in a hard clip
//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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