Updates (in case my plane crashes)

1 files changed, 289 insertions, 0 deletions

diff --git a/plugins/MacAU/MidSide/MidSide.cpp b/plugins/MacAU/MidSide/MidSide.cpp
new file mode 100755
index 0000000..32dfa00
--- /dev/null
+++ b/plugins/MacAU/MidSide/MidSide.cpp
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+/*
+*	File:		MidSide.cpp
+*	
+*	Version:	1.0
+* 
+*	Created:	1/6/11
+*	
+*	Copyright:  Copyright © 2011 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.
+*
+*/
+/*=============================================================================
+	MidSide.h
+	
+=============================================================================*/
+#include "MidSide.h"
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+COMPONENT_ENTRY(MidSide)
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//	MidSide::MidSide
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+MidSide::MidSide(AudioUnit component)
+	: AUEffectBase(component)
+{
+	CreateElements();
+	Globals()->UseIndexedParameters(kNumberOfParameters);
+	SetParameter(kParam_One, kDefaultValue_ParamOne );
+        
+#if AU_DEBUG_DISPATCHER
+	mDebugDispatcher = new AUDebugDispatcher (this);
+#endif
+	
+}
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//	MidSide::GetParameterValueStrings
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ComponentResult		MidSide::GetParameterValueStrings(AudioUnitScope		inScope,
+                                                                AudioUnitParameterID	inParameterID,
+                                                                CFArrayRef *		outStrings)
+{
+        
+    return kAudioUnitErr_InvalidProperty;
+}
+
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//	MidSide::GetParameterInfo
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ComponentResult		MidSide::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;
+           default:
+                result = kAudioUnitErr_InvalidParameter;
+                break;
+            }
+	} else {
+        result = kAudioUnitErr_InvalidParameter;
+    }
+    
+
+
+	return result;
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//	MidSide::GetPropertyInfo
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ComponentResult		MidSide::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 MidSide::SupportedNumChannels(const AUChannelInfo ** outInfo)
+{
+	if (outInfo != NULL)
+	{
+		static AUChannelInfo info;
+		info.inChannels = 2;
+		info.outChannels = 2;
+		*outInfo = &info;
+	}
+
+	return 1;
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//	MidSide::GetProperty
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ComponentResult		MidSide::GetProperty(	AudioUnitPropertyID inID,
+                                                        AudioUnitScope 		inScope,
+                                                        AudioUnitElement 	inElement,
+                                                        void *			outData )
+{
+	return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//	MidSide::Initialize
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ComponentResult MidSide::Initialize()
+{
+    ComponentResult result = AUEffectBase::Initialize();
+    if (result == noErr)
+        Reset(kAudioUnitScope_Global, 0);
+    return result;
+}
+
+#pragma mark ____MidSideEffectKernel
+
+//-----------------------------------------------------------------------------------------
+// this is called the reset the DSP state (clear buffers, reset counters, etc.)
+ComponentResult		MidSide::Reset(AudioUnitScope inScope, AudioUnitElement inElement)
+{
+	fpNShapeLA = 0.0;
+	fpNShapeLB = 0.0;
+	fpNShapeRA = 0.0;
+	fpNShapeRB = 0.0;
+	fpFlip = true;
+	return noErr;
+}
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//	MidSide::ProcessBufferLists
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+OSStatus		MidSide::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;
+	
+	Float32 fpTemp;
+	long double fpOld = 0.618033988749894848204586; //golden ratio!
+	long double fpNew = 1.0 - fpOld;	
+	
+	long double inputSampleL;
+	long double inputSampleR;
+	long double mid;
+	long double side;
+	
+	Float64 sidegain = GetParameter( kParam_One ) * 2.0;
+	Float64 midgain = 2.0 - sidegain;
+	
+	while (nSampleFrames-- > 0) {
+		inputSampleL = *inputL;
+		inputSampleR = *inputR;
+		//assign working variables
+		if (inputSampleL<1.2e-38 && -inputSampleL<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;
+			inputSampleL = applyresidue;
+		}
+		if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
+			static int noisesource = 0;
+			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;
+			inputSampleR = 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.
+		}
+		
+		mid = inputSampleL + inputSampleR;
+		side = inputSampleL - inputSampleR;
+
+		mid *= midgain;
+		side *= sidegain;
+		
+		//noise shaping to 32-bit floating point
+		if (fpFlip) {
+			fpTemp = mid;
+			fpNShapeLA = (fpNShapeLA*fpOld)+((mid-fpTemp)*fpNew);
+			mid += fpNShapeLA;
+			fpTemp = side;
+			fpNShapeRA = (fpNShapeRA*fpOld)+((side-fpTemp)*fpNew);
+			side += fpNShapeRA;
+		}
+		else {
+			fpTemp = mid;
+			fpNShapeLB = (fpNShapeLB*fpOld)+((mid-fpTemp)*fpNew);
+			mid += fpNShapeLB;
+			fpTemp = side;
+			fpNShapeRB = (fpNShapeRB*fpOld)+((side-fpTemp)*fpNew);
+			side += fpNShapeRB;
+		}
+		fpFlip = !fpFlip;
+		//end noise shaping on 32 bit output
+		
+		*outputL = mid;
+		*outputR = side;
+		
+		inputL += 1;
+		inputR += 1;
+		outputL += 1;
+		outputR += 1;
+	}
+return noErr;
+}
+