/*
* File: Podcast.cpp
*
* Version: 1.0
*
* Created: 5/24/19
*
* Copyright: Copyright � 2019 Airwindows, All Rights Reserved
*
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*/
/*=============================================================================
Podcast.cpp
=============================================================================*/
#include "Podcast.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
COMPONENT_ENTRY(Podcast)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Podcast::Podcast
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Podcast::Podcast(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
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Podcast::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Podcast::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Podcast::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Podcast::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;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Podcast::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Podcast::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Podcast::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Podcast::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// Podcast::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Podcast::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____PodcastEffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Podcast::PodcastKernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void Podcast::PodcastKernel::Reset()
{
c1 = 2.0; c2 = 2.0; c3 = 2.0; c4 = 2.0; c5 = 2.0; //startup comp gains
fpd = 17;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Podcast::PodcastKernel::Process
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void Podcast::PodcastKernel::Process( const Float32 *inSourceP,
Float32 *inDestP,
UInt32 inFramesToProcess,
UInt32 inNumChannels,
bool &ioSilence )
{
UInt32 nSampleFrames = inFramesToProcess;
const Float32 *sourceP = inSourceP;
Float32 *destP = inDestP;
long double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= GetSampleRate();
Float64 compress = 1.0 + pow(GetParameter( kParam_One ),2);
Float64 wet = GetParameter( kParam_Two );
Float64 speed1 = 64.0 / pow(compress,2);
speed1 *= overallscale;
Float64 speed2 = speed1 * 1.4;
Float64 speed3 = speed2 * 1.5;
Float64 speed4 = speed3 * 1.6;
Float64 speed5 = speed4 * 1.7;
Float64 trigger;
while (nSampleFrames-- > 0) {
long double inputSample = *sourceP;
if (fabs(inputSample)<1.18e-37) inputSample = fpd * 1.18e-37;
long double drySample = inputSample;
inputSample *= c1;
trigger = fabs(inputSample)*4.7;
if (trigger > 4.7) trigger = 4.7;
trigger = sin(trigger);
if (trigger < 0) trigger *= 8.0;
if (trigger < -4.2) trigger = -4.2;
c1 += trigger/speed5;
if (c1 > compress) c1 = compress;
//compress stage
inputSample *= c2;
trigger = fabs(inputSample)*4.7;
if (trigger > 4.7) trigger = 4.7;
trigger = sin(trigger);
if (trigger < 0) trigger *= 8.0;
if (trigger < -4.2) trigger = -4.2;
c2 += trigger/speed4;
if (c2 > compress) c2 = compress;
//compress stage
inputSample *= c3;
trigger = fabs(inputSample)*4.7;
if (trigger > 4.7) trigger = 4.7;
trigger = sin(trigger);
if (trigger < 0) trigger *= 8.0;
if (trigger < -4.2) trigger = -4.2;
c3 += trigger/speed3;
if (c3 > compress) c3 = compress;
//compress stage
inputSample *= c4;
trigger = fabs(inputSample)*4.7;
if (trigger > 4.7) trigger = 4.7;
trigger = sin(trigger);
if (trigger < 0) trigger *= 8.0;
if (trigger < -4.2) trigger = -4.2;
c4 += trigger/speed2;
if (c4 > compress) c4 = compress;
//compress stage
inputSample *= c5;
trigger = fabs(inputSample)*4.7;
if (trigger > 4.7) trigger = 4.7;
trigger = sin(trigger);
if (trigger < 0) trigger *= 8.0;
if (trigger < -4.2) trigger = -4.2;
c5 += trigger/speed1;
if (c5 > compress) c5 = compress;
//compress stage
if (compress > 1.0) inputSample /= compress;
if (wet !=1.0) {
inputSample = (inputSample * wet) + (drySample * (1.0-wet));
}
//Dry/Wet control, defaults to the last slider
if (inputSample > 0.999) inputSample = 0.999;
if (inputSample < -0.999) inputSample = -0.999;
//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;
}
}
