mirror of
https://github.com/airwindows/airwindows.git
synced 2026-05-15 14:16:00 -06:00
406 lines
No EOL
15 KiB
C++
Executable file
406 lines
No EOL
15 KiB
C++
Executable file
/*
|
|
* File: Thunder.cpp
|
|
*
|
|
* Version: 1.0
|
|
*
|
|
* Created: 9/19/16
|
|
*
|
|
* Copyright: Copyright © 2016 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.
|
|
*
|
|
*/
|
|
/*=============================================================================
|
|
Thunder.cpp
|
|
|
|
=============================================================================*/
|
|
#include "Thunder.h"
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
COMPONENT_ENTRY(Thunder)
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Thunder::Thunder
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
Thunder::Thunder(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
|
|
|
|
}
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Thunder::GetParameterValueStrings
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult Thunder::GetParameterValueStrings(AudioUnitScope inScope,
|
|
AudioUnitParameterID inParameterID,
|
|
CFArrayRef * outStrings)
|
|
{
|
|
|
|
return kAudioUnitErr_InvalidProperty;
|
|
}
|
|
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Thunder::GetParameterInfo
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult Thunder::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;
|
|
default:
|
|
result = kAudioUnitErr_InvalidParameter;
|
|
break;
|
|
}
|
|
} else {
|
|
result = kAudioUnitErr_InvalidParameter;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Thunder::GetPropertyInfo
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult Thunder::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 Thunder::SupportedNumChannels(const AUChannelInfo ** outInfo)
|
|
{
|
|
if (outInfo != NULL)
|
|
{
|
|
static AUChannelInfo info;
|
|
info.inChannels = 2;
|
|
info.outChannels = 2;
|
|
*outInfo = &info;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Thunder::GetProperty
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult Thunder::GetProperty( AudioUnitPropertyID inID,
|
|
AudioUnitScope inScope,
|
|
AudioUnitElement inElement,
|
|
void * outData )
|
|
{
|
|
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
|
|
}
|
|
|
|
// Thunder::Initialize
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult Thunder::Initialize()
|
|
{
|
|
ComponentResult result = AUEffectBase::Initialize();
|
|
if (result == noErr)
|
|
Reset(kAudioUnitScope_Global, 0);
|
|
return result;
|
|
}
|
|
|
|
#pragma mark ____ThunderEffectKernel
|
|
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Thunder::ThunderKernel::Reset()
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult Thunder::Reset(AudioUnitScope inScope, AudioUnitElement inElement)
|
|
{
|
|
fpdL = 1.0; while (fpdL < 16386) fpdL = rand()*UINT32_MAX;
|
|
fpdR = 1.0; while (fpdR < 16386) fpdR = rand()*UINT32_MAX;
|
|
muSpeedA = 10000;
|
|
muSpeedB = 10000;
|
|
muCoefficientA = 1;
|
|
muCoefficientB = 1;
|
|
muVary = 1;
|
|
gateL = 0.0;
|
|
gateR = 0.0;
|
|
iirSampleAL = 0.0;
|
|
iirSampleBL = 0.0;
|
|
iirSampleAR = 0.0;
|
|
iirSampleBR = 0.0;
|
|
iirSampleAM = 0.0;
|
|
iirSampleBM = 0.0;
|
|
iirSampleCM = 0.0;
|
|
flip = false;
|
|
return noErr;
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// Thunder::ProcessBufferLists
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
OSStatus Thunder::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 overallscale = 1.0;
|
|
overallscale /= 44100.0;
|
|
overallscale *= GetSampleRate();
|
|
|
|
Float64 thunder = GetParameter( kParam_One ) * 0.4;
|
|
Float64 threshold = 1.0 - (thunder * 2.0);
|
|
if (threshold < 0.01) threshold = 0.01;
|
|
Float64 muMakeupGain = 1.0 / threshold;
|
|
Float64 release = pow((1.28-thunder),5)*32768.0;
|
|
release /= overallscale;
|
|
Float64 fastest = sqrt(release);
|
|
Float64 EQ = ((0.0275 / GetSampleRate())*32000.0);
|
|
Float64 dcblock = EQ / 300.0;
|
|
Float64 basstrim = (0.01/EQ)+1.0;
|
|
//FF parameters also ride off Speed
|
|
Float64 outputGain = GetParameter( kParam_Two );
|
|
|
|
Float64 coefficient;
|
|
Float64 inputSense;
|
|
|
|
Float64 resultL;
|
|
Float64 resultR;
|
|
Float64 resultM;
|
|
Float64 resultML;
|
|
Float64 resultMR;
|
|
|
|
double inputSampleL;
|
|
double inputSampleR;
|
|
|
|
while (nSampleFrames-- > 0) {
|
|
inputSampleL = *inputL;
|
|
inputSampleR = *inputR;
|
|
if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
|
|
if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
|
|
|
|
inputSampleL = inputSampleL * muMakeupGain;
|
|
inputSampleR = inputSampleR * muMakeupGain;
|
|
|
|
if (gateL < fabs(inputSampleL)) gateL = inputSampleL;
|
|
else gateL -= dcblock;
|
|
if (gateR < fabs(inputSampleR)) gateR = inputSampleR;
|
|
else gateR -= dcblock;
|
|
//setting up gated DC blocking to control the tendency for rumble and offset
|
|
|
|
//begin three FathomFive stages
|
|
iirSampleAL += (inputSampleL * EQ * thunder);
|
|
iirSampleAL -= (iirSampleAL * iirSampleAL * iirSampleAL * EQ);
|
|
if (iirSampleAL > gateL) iirSampleAL -= dcblock;
|
|
if (iirSampleAL < -gateL) iirSampleAL += dcblock;
|
|
resultL = iirSampleAL*basstrim;
|
|
iirSampleBL = (iirSampleBL * (1 - EQ)) + (resultL * EQ);
|
|
resultL = iirSampleBL;
|
|
|
|
iirSampleAR += (inputSampleR * EQ * thunder);
|
|
iirSampleAR -= (iirSampleAR * iirSampleAR * iirSampleAR * EQ);
|
|
if (iirSampleAR > gateR) iirSampleAR -= dcblock;
|
|
if (iirSampleAR < -gateR) iirSampleAR += dcblock;
|
|
resultR = iirSampleAR*basstrim;
|
|
iirSampleBR = (iirSampleBR * (1 - EQ)) + (resultR * EQ);
|
|
resultR = iirSampleBR;
|
|
|
|
iirSampleAM += ((inputSampleL + inputSampleR) * EQ * thunder);
|
|
iirSampleAM -= (iirSampleAM * iirSampleAM * iirSampleAM * EQ);
|
|
resultM = iirSampleAM*basstrim;
|
|
iirSampleBM = (iirSampleBM * (1 - EQ)) + (resultM * EQ);
|
|
resultM = iirSampleBM;
|
|
iirSampleCM = (iirSampleCM * (1 - EQ)) + (resultM * EQ);
|
|
|
|
resultM = fabs(iirSampleCM);
|
|
resultML = fabs(resultL);
|
|
resultMR = fabs(resultR);
|
|
|
|
if (resultM > resultML) resultML = resultM;
|
|
if (resultM > resultMR) resultMR = resultM;
|
|
//trying to restrict the buzziness
|
|
|
|
if (resultML > 1.0) resultML = 1.0;
|
|
if (resultMR > 1.0) resultMR = 1.0;
|
|
//now we have result L, R and M the trigger modulator which must be 0-1
|
|
|
|
//begin compressor section
|
|
inputSampleL -= (iirSampleBL * thunder);
|
|
inputSampleR -= (iirSampleBR * thunder);
|
|
//highpass the comp section by sneaking out what will be the reinforcement
|
|
|
|
inputSense = fabs(inputSampleL);
|
|
if (fabs(inputSampleR) > inputSense)
|
|
inputSense = fabs(inputSampleR);
|
|
//we will take the greater of either channel and just use that, then apply the result
|
|
//to both stereo channels.
|
|
|
|
if (flip)
|
|
{
|
|
if (inputSense > threshold)
|
|
{
|
|
muVary = threshold / inputSense;
|
|
muAttack = sqrt(fabs(muSpeedA));
|
|
muCoefficientA = muCoefficientA * (muAttack-1.0);
|
|
if (muVary < threshold)
|
|
{
|
|
muCoefficientA = muCoefficientA + threshold;
|
|
}
|
|
else
|
|
{
|
|
muCoefficientA = muCoefficientA + muVary;
|
|
}
|
|
muCoefficientA = muCoefficientA / muAttack;
|
|
}
|
|
else
|
|
{
|
|
muCoefficientA = muCoefficientA * ((muSpeedA * muSpeedA)-1.0);
|
|
muCoefficientA = muCoefficientA + 1.0;
|
|
muCoefficientA = muCoefficientA / (muSpeedA * muSpeedA);
|
|
}
|
|
muNewSpeed = muSpeedA * (muSpeedA-1);
|
|
muNewSpeed = muNewSpeed + fabs(inputSense*release)+fastest;
|
|
muSpeedA = muNewSpeed / muSpeedA;
|
|
}
|
|
else
|
|
{
|
|
if (inputSense > threshold)
|
|
{
|
|
muVary = threshold / inputSense;
|
|
muAttack = sqrt(fabs(muSpeedB));
|
|
muCoefficientB = muCoefficientB * (muAttack-1);
|
|
if (muVary < threshold)
|
|
{
|
|
muCoefficientB = muCoefficientB + threshold;
|
|
}
|
|
else
|
|
{
|
|
muCoefficientB = muCoefficientB + muVary;
|
|
}
|
|
muCoefficientB = muCoefficientB / muAttack;
|
|
}
|
|
else
|
|
{
|
|
muCoefficientB = muCoefficientB * ((muSpeedB * muSpeedB)-1.0);
|
|
muCoefficientB = muCoefficientB + 1.0;
|
|
muCoefficientB = muCoefficientB / (muSpeedB * muSpeedB);
|
|
}
|
|
muNewSpeed = muSpeedB * (muSpeedB-1);
|
|
muNewSpeed = muNewSpeed + fabs(inputSense*release)+fastest;
|
|
muSpeedB = muNewSpeed / muSpeedB;
|
|
}
|
|
//got coefficients, adjusted speeds
|
|
|
|
if (flip)
|
|
{
|
|
coefficient = pow(muCoefficientA,2);
|
|
inputSampleL *= coefficient;
|
|
inputSampleR *= coefficient;
|
|
}
|
|
else
|
|
{
|
|
coefficient = pow(muCoefficientB,2);
|
|
inputSampleL *= coefficient;
|
|
inputSampleR *= coefficient;
|
|
}
|
|
//applied compression with vari-vari-µ-µ-µ-µ-µ-µ-is-the-kitten-song o/~
|
|
//applied gain correction to control output level- tends to constrain sound rather than inflate it
|
|
|
|
inputSampleL += (resultL * resultM);
|
|
inputSampleR += (resultR * resultM);
|
|
//combine the two by adding the summed channnel of lows
|
|
|
|
if (outputGain != 1.0) {
|
|
inputSampleL *= outputGain;
|
|
inputSampleR *= outputGain;
|
|
}
|
|
flip = !flip;
|
|
|
|
//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;
|
|
//don't know why we're getting a volume boost, cursed thing
|
|
|
|
inputL += 1;
|
|
inputR += 1;
|
|
outputL += 1;
|
|
outputR += 1;
|
|
}
|
|
return noErr;
|
|
} |