/*
* File: BassDrive.cpp
*
* Version: 1.0
*
* Created: 5/24/19
*
* Copyright: Copyright � 2019 Airwindows, All Rights Reserved
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/*=============================================================================
BassDrive.cpp
=============================================================================*/
#include "BassDrive.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
COMPONENT_ENTRY(BassDrive)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// BassDrive::BassDrive
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
BassDrive::BassDrive(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 );
#if AU_DEBUG_DISPATCHER
mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// BassDrive::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult BassDrive::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// BassDrive::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult BassDrive::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;
default:
result = kAudioUnitErr_InvalidParameter;
break;
}
} else {
result = kAudioUnitErr_InvalidParameter;
}
return result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// BassDrive::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult BassDrive::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// BassDrive::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult BassDrive::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// BassDrive::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult BassDrive::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____BassDriveEffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// BassDrive::BassDriveKernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void BassDrive::BassDriveKernel::Reset()
{
for (int fcount = 0; fcount < 7; fcount++)
{
presenceInA[fcount] = 0.0;
presenceOutA[fcount] = 0.0;
highInA[fcount] = 0.0;
highOutA[fcount] = 0.0;
midInA[fcount] = 0.0;
midOutA[fcount] = 0.0;
lowInA[fcount] = 0.0;
lowOutA[fcount] = 0.0;
presenceInB[fcount] = 0.0;
presenceOutB[fcount] = 0.0;
highInB[fcount] = 0.0;
highOutB[fcount] = 0.0;
midInB[fcount] = 0.0;
midOutB[fcount] = 0.0;
lowInB[fcount] = 0.0;
lowOutB[fcount] = 0.0;
}
flip = false;
fpd = 17;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// BassDrive::BassDriveKernel::Process
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void BassDrive::BassDriveKernel::Process( const Float32 *inSourceP,
Float32 *inDestP,
UInt32 inFramesToProcess,
UInt32 inNumChannels,
bool &ioSilence )
{
UInt32 nSampleFrames = inFramesToProcess;
const Float32 *sourceP = inSourceP;
Float32 *destP = inDestP;
Float64 sum;
Float64 presence = pow(GetParameter( kParam_One ),5) * 8.0;
Float64 high = pow(GetParameter( kParam_Two ),3) * 4.0;
Float64 mid = pow(GetParameter( kParam_Three ),2);
Float64 low = GetParameter( kParam_Four ) / 4.0;
Float64 drive = GetParameter( kParam_Five ) * 2.0;
Float64 bridgerectifier;
while (nSampleFrames-- > 0) {
long double inputSample = *sourceP;
if (fabs(inputSample)<1.18e-37) inputSample = fpd * 1.18e-37;
sum = 0.0;
if (flip)
{
presenceInA[0] = presenceInA[1]; presenceInA[1] = presenceInA[2]; presenceInA[2] = presenceInA[3];
presenceInA[3] = presenceInA[4]; presenceInA[4] = presenceInA[5]; presenceInA[5] = presenceInA[6];
presenceInA[6] = inputSample * presence; presenceOutA[2] = presenceOutA[3];
presenceOutA[3] = presenceOutA[4]; presenceOutA[4] = presenceOutA[5]; presenceOutA[5] = presenceOutA[6];
presenceOutA[6] = (presenceInA[0] + presenceInA[6]) + 1.9152966321 * (presenceInA[1] + presenceInA[5])
- (presenceInA[2] + presenceInA[4]) - 3.8305932641 * presenceInA[3]
+ ( -0.2828214615 * presenceOutA[2]) + ( 0.2613069963 * presenceOutA[3])
+ ( -0.8628193852 * presenceOutA[4]) + ( 0.5387164389 * presenceOutA[5]);
bridgerectifier = fabs(presenceOutA[6]);
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = sin(bridgerectifier);
if (presenceOutA[6] > 0.0){sum += bridgerectifier;}
else {sum -= bridgerectifier;}
//presence section
highInA[0] = highInA[1]; highInA[1] = highInA[2]; highInA[2] = highInA[3];
highInA[3] = highInA[4]; highInA[4] = highInA[5]; highInA[5] = highInA[6];
bridgerectifier = fabs(inputSample) * high;
if (bridgerectifier > 1.57079633) {bridgerectifier = 1.57079633;}
bridgerectifier = sin(bridgerectifier);
if (inputSample > 0.0) {highInA[6] = bridgerectifier;}
else {highInA[6] = -bridgerectifier;}
highInA[6] *= high; highOutA[2] = highOutA[3];
highOutA[3] = highOutA[4]; highOutA[4] = highOutA[5]; highOutA[5] = highOutA[6];
highOutA[6] = (highInA[0] + highInA[6]) - 0.5141967433 * (highInA[1] + highInA[5])
- (highInA[2] + highInA[4]) + 1.0283934866 * highInA[3]
+ ( -0.2828214615 * highOutA[2]) + ( 1.0195930909 * highOutA[3])
+ ( -1.9633013869 * highOutA[4]) + ( 2.1020162751 * highOutA[5]);
bridgerectifier = fabs(highOutA[6]);
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = sin(bridgerectifier);
if (highOutA[6] > 0.0){sum += bridgerectifier;}
else {sum -= bridgerectifier;}
//high section
midInA[0] = midInA[1]; midInA[1] = midInA[2]; midInA[2] = midInA[3];
midInA[3] = midInA[4]; midInA[4] = midInA[5]; midInA[5] = midInA[6];
bridgerectifier = fabs(inputSample) * mid;
if (bridgerectifier > 1.57079633) {bridgerectifier = 1.57079633;}
bridgerectifier = sin(bridgerectifier);
if (inputSample > 0.0) {midInA[6] = bridgerectifier;}
else {midInA[6] = -bridgerectifier;}
midInA[6] *= mid; midOutA[2] = midOutA[3];
midOutA[3] = midOutA[4]; midOutA[4] = midOutA[5]; midOutA[5] = midOutA[6];
midOutA[6] = (midInA[0] + midInA[6]) - 1.1790257790 * (midInA[1] + midInA[5])
- (midInA[2] + midInA[4]) + 2.3580515580 * midInA[3]
+ ( -0.6292082828 * midOutA[2]) + ( 2.7785843605 * midOutA[3])
+ ( -4.6638295236 * midOutA[4]) + ( 3.5142515802 * midOutA[5]);
sum += midOutA[6];
//mid section
lowInA[0] = lowInA[1]; lowInA[1] = lowInA[2]; lowInA[2] = lowInA[3];
lowInA[3] = lowInA[4]; lowInA[4] = lowInA[5]; lowInA[5] = lowInA[6];
bridgerectifier = fabs(inputSample) * low;
if (bridgerectifier > 1.57079633) {bridgerectifier = 1.57079633;}
bridgerectifier = sin(bridgerectifier);
if (inputSample > 0.0) {lowInA[6] = bridgerectifier;}
else {lowInA[6] = -bridgerectifier;}
lowInA[6] *= low; lowOutA[2] = lowOutA[3];
lowOutA[3] = lowOutA[4]; lowOutA[4] = lowOutA[5]; lowOutA[5] = lowOutA[6];
lowOutA[6] = (lowInA[0] + lowInA[6]) - 1.9193504547 * (lowInA[1] + lowInA[5])
- (lowInA[2] + lowInA[4]) + 3.8387009093 * lowInA[3]
+ ( -0.9195964462 * lowOutA[2]) + ( 3.7538173833 * lowOutA[3])
+ ( -5.7487775603 * lowOutA[4]) + ( 3.9145559258 * lowOutA[5]);
sum += lowOutA[6];
//low section
}
else
{
presenceInB[0] = presenceInB[1]; presenceInB[1] = presenceInB[2]; presenceInB[2] = presenceInB[3];
presenceInB[3] = presenceInB[4]; presenceInB[4] = presenceInB[5]; presenceInB[5] = presenceInB[6];
presenceInB[6] = inputSample * presence; presenceOutB[2] = presenceOutB[3];
presenceOutB[3] = presenceOutB[4]; presenceOutB[4] = presenceOutB[5]; presenceOutB[5] = presenceOutB[6];
presenceOutB[6] = (presenceInB[0] + presenceInB[6]) + 1.9152966321 * (presenceInB[1] + presenceInB[5])
- (presenceInB[2] + presenceInB[4]) - 3.8305932641 * presenceInB[3]
+ ( -0.2828214615 * presenceOutB[2]) + ( 0.2613069963 * presenceOutB[3])
+ ( -0.8628193852 * presenceOutB[4]) + ( 0.5387164389 * presenceOutB[5]);
bridgerectifier = fabs(presenceOutB[6]);
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = sin(bridgerectifier);
if (presenceOutB[6] > 0.0){sum += bridgerectifier;}
else {sum -= bridgerectifier;}
//presence section
highInB[0] = highInB[1]; highInB[1] = highInB[2]; highInB[2] = highInB[3];
highInB[3] = highInB[4]; highInB[4] = highInB[5]; highInB[5] = highInB[6];
bridgerectifier = fabs(inputSample) * high;
if (bridgerectifier > 1.57079633) {bridgerectifier = 1.57079633;}
bridgerectifier = sin(bridgerectifier);
if (inputSample > 0.0) {highInB[6] = bridgerectifier;}
else {highInB[6] = -bridgerectifier;}
highInB[6] *= high; highOutB[2] = highOutB[3];
highOutB[3] = highOutB[4]; highOutB[4] = highOutB[5]; highOutB[5] = highOutB[6];
highOutB[6] = (highInB[0] + highInB[6]) - 0.5141967433 * (highInB[1] + highInB[5])
- (highInB[2] + highInB[4]) + 1.0283934866 * highInB[3]
+ ( -0.2828214615 * highOutB[2]) + ( 1.0195930909 * highOutB[3])
+ ( -1.9633013869 * highOutB[4]) + ( 2.1020162751 * highOutB[5]);
bridgerectifier = fabs(highOutB[6]);
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = sin(bridgerectifier);
if (highOutB[6] > 0.0){sum += bridgerectifier;}
else {sum -= bridgerectifier;}
//high section
midInB[0] = midInB[1]; midInB[1] = midInB[2]; midInB[2] = midInB[3];
midInB[3] = midInB[4]; midInB[4] = midInB[5]; midInB[5] = midInB[6];
bridgerectifier = fabs(inputSample) * mid;
if (bridgerectifier > 1.57079633) {bridgerectifier = 1.57079633;}
bridgerectifier = sin(bridgerectifier);
if (inputSample > 0.0) {midInB[6] = bridgerectifier;}
else {midInB[6] = -bridgerectifier;}
midInB[6] *= mid; midOutB[2] = midOutB[3];
midOutB[3] = midOutB[4]; midOutB[4] = midOutB[5]; midOutB[5] = midOutB[6];
midOutB[6] = (midInB[0] + midInB[6]) - 1.1790257790 * (midInB[1] + midInB[5])
- (midInB[2] + midInB[4]) + 2.3580515580 * midInB[3]
+ ( -0.6292082828 * midOutB[2]) + ( 2.7785843605 * midOutB[3])
+ ( -4.6638295236 * midOutB[4]) + ( 3.5142515802 * midOutB[5]);
sum += midOutB[6];
//mid section
lowInB[0] = lowInB[1]; lowInB[1] = lowInB[2]; lowInB[2] = lowInB[3];
lowInB[3] = lowInB[4]; lowInB[4] = lowInB[5]; lowInB[5] = lowInB[6];
bridgerectifier = fabs(inputSample) * low;
if (bridgerectifier > 1.57079633) {bridgerectifier = 1.57079633;}
bridgerectifier = sin(bridgerectifier);
if (inputSample > 0.0) {lowInB[6] = bridgerectifier;}
else {lowInB[6] = -bridgerectifier;}
lowInB[6] *= low; lowOutB[2] = lowOutB[3];
lowOutB[3] = lowOutB[4]; lowOutB[4] = lowOutB[5]; lowOutB[5] = lowOutB[6];
lowOutB[6] = (lowInB[0] + lowInB[6]) - 1.9193504547 * (lowInB[1] + lowInB[5])
- (lowInB[2] + lowInB[4]) + 3.8387009093 * lowInB[3]
+ ( -0.9195964462 * lowOutB[2]) + ( 3.7538173833 * lowOutB[3])
+ ( -5.7487775603 * lowOutB[4]) + ( 3.9145559258 * lowOutB[5]);
sum += lowOutB[6];
//low section
}
inputSample = fabs(sum) * drive;
if (inputSample > 1.57079633) {inputSample = 1.57079633;}
inputSample = sin(inputSample);
if (sum < 0) inputSample = -inputSample;
flip = !flip;
//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;
}
}
