mirror of
https://github.com/airwindows/airwindows.git
synced 2026-05-15 14:16:00 -06:00
283 lines
11 KiB
C++
Executable file
283 lines
11 KiB
C++
Executable file
/*
|
|
* File: TransDesk.cpp
|
|
*
|
|
* Version: 1.0
|
|
*
|
|
* Created: 10/1/10
|
|
*
|
|
* Copyright: Copyright © 2010 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.
|
|
*
|
|
*/
|
|
/*=============================================================================
|
|
TransDesk.h
|
|
|
|
=============================================================================*/
|
|
#include "TransDesk.h"
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
COMPONENT_ENTRY(TransDesk)
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// TransDesk::TransDesk
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
TransDesk::TransDesk(AudioUnit component)
|
|
: AUEffectBase(component)
|
|
{
|
|
CreateElements();
|
|
Globals()->UseIndexedParameters(kNumberOfParameters);
|
|
|
|
#if AU_DEBUG_DISPATCHER
|
|
mDebugDispatcher = new AUDebugDispatcher (this);
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// TransDesk::GetParameterValueStrings
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult TransDesk::GetParameterValueStrings(AudioUnitScope inScope,
|
|
AudioUnitParameterID inParameterID,
|
|
CFArrayRef * outStrings)
|
|
{
|
|
|
|
return kAudioUnitErr_InvalidProperty;
|
|
}
|
|
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// TransDesk::GetParameterInfo
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult TransDesk::GetParameterInfo(AudioUnitScope inScope,
|
|
AudioUnitParameterID inParameterID,
|
|
AudioUnitParameterInfo &outParameterInfo )
|
|
{
|
|
ComponentResult result = noErr;
|
|
|
|
outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable
|
|
| kAudioUnitParameterFlag_IsReadable;
|
|
|
|
if (inScope == kAudioUnitScope_Global) {
|
|
switch(inParameterID)
|
|
{
|
|
default:
|
|
result = kAudioUnitErr_InvalidParameter;
|
|
break;
|
|
}
|
|
} else {
|
|
result = kAudioUnitErr_InvalidParameter;
|
|
}
|
|
|
|
|
|
|
|
return result;
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// TransDesk::GetPropertyInfo
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult TransDesk::GetPropertyInfo (AudioUnitPropertyID inID,
|
|
AudioUnitScope inScope,
|
|
AudioUnitElement inElement,
|
|
UInt32 & outDataSize,
|
|
Boolean & outWritable)
|
|
{
|
|
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// TransDesk::GetProperty
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult TransDesk::GetProperty( AudioUnitPropertyID inID,
|
|
AudioUnitScope inScope,
|
|
AudioUnitElement inElement,
|
|
void * outData )
|
|
{
|
|
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// TransDesk::Initialize
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
ComponentResult TransDesk::Initialize()
|
|
{
|
|
ComponentResult result = AUEffectBase::Initialize();
|
|
if (result == noErr)
|
|
Reset(kAudioUnitScope_Global, 0);
|
|
return result;
|
|
}
|
|
|
|
#pragma mark ____TransDeskEffectKernel
|
|
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// TransDesk::TransDeskKernel::Reset()
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
void TransDesk::TransDeskKernel::Reset()
|
|
{
|
|
int count;
|
|
for(count = 0; count < 19; count++) {d[count] = 0;}
|
|
control = 0;
|
|
gcount = 0;
|
|
lastSample = 0.0;
|
|
lastOutSample = 0.0;
|
|
lastSlew = 0.0;
|
|
fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX;
|
|
}
|
|
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
// TransDesk::TransDeskKernel::Process
|
|
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
void TransDesk::TransDeskKernel::Process( const Float32 *inSourceP,
|
|
Float32 *inDestP,
|
|
UInt32 inFramesToProcess,
|
|
UInt32 inNumChannels,
|
|
bool &ioSilence )
|
|
{
|
|
UInt32 nSampleFrames = inFramesToProcess;
|
|
const Float32 *sourceP = inSourceP;
|
|
Float32 *destP = inDestP;
|
|
Float64 overallscale = 1.0;
|
|
overallscale /= 44100.0;
|
|
overallscale *= GetSampleRate();
|
|
|
|
Float64 intensity = 0.02198359;
|
|
Float64 depthA = 3.0;
|
|
int offsetA = (int)(depthA * overallscale);
|
|
if (offsetA < 1) offsetA = 1;
|
|
if (offsetA > 8) offsetA = 8;
|
|
|
|
Float64 clamp;
|
|
Float64 thickness;
|
|
Float64 out;
|
|
|
|
|
|
Float64 gain = 0.130;
|
|
Float64 slewgain = 0.197;
|
|
Float64 prevslew = 0.255;
|
|
Float64 balanceB = 0.0001;
|
|
slewgain *= overallscale;
|
|
prevslew *= overallscale;
|
|
balanceB /= overallscale;
|
|
Float64 balanceA = 1.0 - balanceB;
|
|
Float64 slew;
|
|
Float64 bridgerectifier;
|
|
Float64 combSample;
|
|
double inputSample;
|
|
double drySample;
|
|
|
|
while (nSampleFrames-- > 0) {
|
|
inputSample = *sourceP;
|
|
if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17;
|
|
drySample = inputSample;
|
|
|
|
if (gcount < 0 || gcount > 9) {gcount = 9;}
|
|
|
|
d[gcount+9] = d[gcount] = fabs(inputSample)*intensity;
|
|
control += (d[gcount] / offsetA);
|
|
control -= (d[gcount+offsetA] / offsetA);
|
|
control -= 0.000001;
|
|
|
|
clamp = 1;
|
|
if (control < 0) {control = 0;}
|
|
if (control > 1) {clamp -= (control - 1); control = 1;}
|
|
if (clamp < 0.5) {clamp = 0.5;}
|
|
|
|
gcount--;
|
|
|
|
//control = 0 to 1
|
|
thickness = ((1.0 - control) * 2.0) - 1.0;
|
|
out = fabs(thickness);
|
|
bridgerectifier = fabs(inputSample);
|
|
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
|
|
//max value for sine function
|
|
if (thickness > 0) bridgerectifier = sin(bridgerectifier);
|
|
else bridgerectifier = 1-cos(bridgerectifier);
|
|
//produce either boosted or starved version
|
|
if (inputSample > 0) inputSample = (inputSample*(1-out))+(bridgerectifier*out);
|
|
else inputSample = (inputSample*(1-out))-(bridgerectifier*out);
|
|
//blend according to density control
|
|
|
|
inputSample *= clamp;
|
|
|
|
slew = inputSample - lastSample;
|
|
lastSample = inputSample;
|
|
//Set up direct reference for slew
|
|
|
|
|
|
bridgerectifier = fabs(slew*slewgain);
|
|
if (bridgerectifier > 1.57079633) bridgerectifier = 1.0;
|
|
else bridgerectifier = sin(bridgerectifier);
|
|
if (slew > 0) slew = bridgerectifier/slewgain;
|
|
else slew = -(bridgerectifier/slewgain);
|
|
|
|
inputSample = (lastOutSample*balanceA) + (lastSample*balanceB) + slew;
|
|
//go from last slewed, but include some raw values
|
|
lastOutSample = inputSample;
|
|
//Set up slewed reference
|
|
|
|
combSample = fabs(drySample*lastSample);
|
|
if (combSample > 1.0) combSample = 1.0;
|
|
//bailout for very high input gains
|
|
inputSample -= (lastSlew * combSample * prevslew);
|
|
lastSlew = slew;
|
|
//slew interaction with previous slew
|
|
|
|
inputSample *= gain;
|
|
bridgerectifier = fabs(inputSample);
|
|
if (bridgerectifier > 1.57079633) bridgerectifier = 1.0;
|
|
else bridgerectifier = sin(bridgerectifier);
|
|
|
|
if (inputSample > 0) inputSample = bridgerectifier;
|
|
else inputSample = -bridgerectifier;
|
|
//drive section
|
|
inputSample /= gain;
|
|
//end of Desk section
|
|
|
|
//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;
|
|
}
|
|
}
|
|
|