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+/*
+     File: SynthEvent.h
+ Abstract: Part of CoreAudio Utility Classes
+  Version: 1.1
+ 
+ Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple
+ 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 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.
+ 
+ Copyright (C) 2014 Apple Inc. All Rights Reserved.
+ 
+*/
+/* You can either fill in code here or remove this and create or add new files. */
+
+#ifndef __SynthEvent__
+#define __SynthEvent__
+
+#include <AudioUnit/AudioUnit.h>
+#include <CoreAudio/CoreAudio.h>
+#include "MusicDeviceBase.h"
+#include <stdexcept>
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+
+class SynthEvent
+{
+public:
+	enum {
+		kEventType_NoteOn = 1,
+		kEventType_NoteOff = 2,
+		kEventType_SustainOn = 3,
+		kEventType_SustainOff = 4,
+		kEventType_SostenutoOn = 5,
+		kEventType_SostenutoOff = 6,
+		kEventType_AllNotesOff = 7,
+		kEventType_AllSoundOff = 8,
+		kEventType_ResetAllControllers = 9
+	};
+
+
+	SynthEvent() {}
+	~SynthEvent() {}
+
+	void Set(   
+				UInt32							inEventType,
+				MusicDeviceGroupID				inGroupID,
+				NoteInstanceID					inNoteID,
+				UInt32							inOffsetSampleFrame,
+				const MusicDeviceNoteParams*	inNoteParams
+		)
+	{
+		mEventType = inEventType;
+		mGroupID = inGroupID;
+		mNoteID = inNoteID;
+		mOffsetSampleFrame = inOffsetSampleFrame;
+		
+		if (inNoteParams)
+		{
+			UInt32 paramSize = offsetof(MusicDeviceNoteParams, mControls) + (inNoteParams->argCount-2)*sizeof(NoteParamsControlValue); 
+			mNoteParams = inNoteParams->argCount > 3 
+								? (MusicDeviceNoteParams*)malloc(paramSize) 
+								: &mSmallNoteParams;
+			memcpy(mNoteParams, inNoteParams, paramSize);
+		}
+		else 
+			mNoteParams = NULL;
+	}
+	
+	
+	void Free()
+	{
+		if (mNoteParams)
+		{
+			if (mNoteParams->argCount > 3)
+				free(mNoteParams);
+			mNoteParams = NULL;
+		}
+	}
+	
+	UInt32					GetEventType() const { return mEventType; }
+	MusicDeviceGroupID		GetGroupID() const { return mGroupID; }
+	NoteInstanceID			GetNoteID() const { return mNoteID; }
+	UInt32					GetOffsetSampleFrame() const { return mOffsetSampleFrame; }
+	
+	MusicDeviceNoteParams*  GetParams() const { return mNoteParams; }
+
+	UInt32					GetArgCount() const { return mNoteParams->argCount; }
+	UInt32					NumberParameters() const { return mNoteParams->argCount - 2; }
+	
+	Float32					GetNote() const { return mNoteParams->mPitch; }
+	Float32					GetVelocity() const { return mNoteParams->mVelocity; }
+	
+	NoteParamsControlValue  GetParameter(UInt32 inIndex) const 
+							{
+								if (inIndex >= NumberParameters()) 
+									throw std::runtime_error("index out of range");
+								return mNoteParams->mControls[inIndex]; 
+							}
+	
+private:
+	UInt32					mEventType;
+	MusicDeviceGroupID		mGroupID;
+	NoteInstanceID			mNoteID;
+	UInt32					mOffsetSampleFrame;
+	MusicDeviceNoteParams*  mNoteParams;
+	MusicDeviceNoteParams   mSmallNoteParams; // inline a small one to eliminate malloc for the simple case.
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#endif