diff options
Diffstat (limited to 'plugins/MacAU/TransDesk/TransDesk.cpp')
| -rwxr-xr-x | plugins/MacAU/TransDesk/TransDesk.cpp | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/plugins/MacAU/TransDesk/TransDesk.cpp b/plugins/MacAU/TransDesk/TransDesk.cpp new file mode 100755 index 0000000..0aa57f4 --- /dev/null +++ b/plugins/MacAU/TransDesk/TransDesk.cpp @@ -0,0 +1,321 @@ +/* +* File: TransDesk.cpp +* +* Version: 1.0 +* +* Created: 10/1/10 +* +* Copyright: Copyright © 2010 Airwindows, All Rights Reserved +* +* 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; + fpNShapeA = 0.0; + fpNShapeB = 0.0; + fpFlip = true; +} + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// 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; + long double inputSample; + long double drySample; + Float32 fpTemp; + Float64 fpOld = 0.618033988749894848204586; //golden ratio! + Float64 fpNew = 1.0 - fpOld; + + while (nSampleFrames-- > 0) { + inputSample = *sourceP; + if (inputSample<1.2e-38 && -inputSample<1.2e-38) { + static int noisesource = 0; + //this declares a variable before anything else is compiled. It won't keep assigning + //it to 0 for every sample, it's as if the declaration doesn't exist in this context, + //but it lets me add this denormalization fix in a single place rather than updating + //it in three different locations. The variable isn't thread-safe but this is only + //a random seed and we can share it with whatever. + noisesource = noisesource % 1700021; noisesource++; + int residue = noisesource * noisesource; + residue = residue % 170003; residue *= residue; + residue = residue % 17011; residue *= residue; + residue = residue % 1709; residue *= residue; + residue = residue % 173; residue *= residue; + residue = residue % 17; + double applyresidue = residue; + applyresidue *= 0.00000001; + applyresidue *= 0.00000001; + inputSample = applyresidue; + //this denormalization routine produces a white noise at -300 dB which the noise + //shaping will interact with to produce a bipolar output, but the noise is actually + //all positive. That should stop any variables from going denormal, and the routine + //only kicks in if digital black is input. As a final touch, if you save to 24-bit + //the silence will return to being digital black again. + } + 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 + + + //noise shaping to 32-bit floating point + if (fpFlip) { + fpTemp = inputSample; + fpNShapeA = (fpNShapeA*fpOld)+((inputSample-fpTemp)*fpNew); + inputSample += fpNShapeA; + } + else { + fpTemp = inputSample; + fpNShapeB = (fpNShapeB*fpOld)+((inputSample-fpTemp)*fpNew); + inputSample += fpNShapeB; + } + fpFlip = !fpFlip; + //end noise shaping on 32 bit output + + + *destP = inputSample; + sourceP += inNumChannels; + destP += inNumChannels; + } +} + |