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/*
File: AUInstrumentBase.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.
*/
#ifndef __AUInstrumentBase__
#define __AUInstrumentBase__
#include <vector>
#include <stdexcept>
#include <AudioUnit/AudioUnit.h>
#include <CoreAudio/CoreAudio.h>
#include <libkern/OSAtomic.h>
#include "MusicDeviceBase.h"
#include "LockFreeFIFO.h"
#include "SynthEvent.h"
#include "SynthNote.h"
#include "SynthElement.h"
////////////////////////////////////////////////////////////////////////////////////////////////////////////
typedef LockFreeFIFOWithFree<SynthEvent> SynthEventQueue;
class AUInstrumentBase : public MusicDeviceBase
{
public:
AUInstrumentBase(
AudioComponentInstance inInstance,
UInt32 numInputs,
UInt32 numOutputs,
UInt32 numGroups = 16,
UInt32 numParts = 1);
virtual ~AUInstrumentBase();
virtual OSStatus Initialize();
/*! @method Parts */
AUScope & Parts() { return mPartScope; }
/*! @method GetPart */
AUElement * GetPart( AudioUnitElement inElement)
{
return mPartScope.SafeGetElement(inElement);
}
virtual AUScope * GetScopeExtended (AudioUnitScope inScope);
virtual AUElement * CreateElement( AudioUnitScope inScope,
AudioUnitElement inElement);
virtual void CreateExtendedElements();
virtual void Cleanup();
virtual OSStatus Reset( AudioUnitScope inScope,
AudioUnitElement inElement);
virtual bool ValidFormat( AudioUnitScope inScope,
AudioUnitElement inElement,
const CAStreamBasicDescription & inNewFormat);
virtual bool StreamFormatWritable( AudioUnitScope scope,
AudioUnitElement element);
virtual bool CanScheduleParameters() const { return false; }
virtual OSStatus Render( AudioUnitRenderActionFlags & ioActionFlags,
const AudioTimeStamp & inTimeStamp,
UInt32 inNumberFrames);
virtual OSStatus StartNote( MusicDeviceInstrumentID inInstrument,
MusicDeviceGroupID inGroupID,
NoteInstanceID * outNoteInstanceID,
UInt32 inOffsetSampleFrame,
const MusicDeviceNoteParams &inParams);
virtual OSStatus StopNote( MusicDeviceGroupID inGroupID,
NoteInstanceID inNoteInstanceID,
UInt32 inOffsetSampleFrame);
virtual OSStatus RealTimeStartNote( SynthGroupElement *inGroup,
NoteInstanceID inNoteInstanceID,
UInt32 inOffsetSampleFrame,
const MusicDeviceNoteParams &inParams);
virtual OSStatus RealTimeStopNote( MusicDeviceGroupID inGroupID,
NoteInstanceID inNoteInstanceID,
UInt32 inOffsetSampleFrame);
virtual OSStatus HandleControlChange( UInt8 inChannel,
UInt8 inController,
UInt8 inValue,
UInt32 inStartFrame);
virtual OSStatus HandlePitchWheel( UInt8 inChannel,
UInt8 inPitch1,
UInt8 inPitch2,
UInt32 inStartFrame);
virtual OSStatus HandleChannelPressure( UInt8 inChannel,
UInt8 inValue,
UInt32 inStartFrame);
virtual OSStatus HandleProgramChange( UInt8 inChannel,
UInt8 inValue);
virtual OSStatus HandlePolyPressure( UInt8 inChannel,
UInt8 inKey,
UInt8 inValue,
UInt32 inStartFrame);
virtual OSStatus HandleResetAllControllers( UInt8 inChannel);
virtual OSStatus HandleAllNotesOff( UInt8 inChannel);
virtual OSStatus HandleAllSoundOff( UInt8 inChannel);
SynthNote* GetNote(UInt32 inIndex)
{
if (!mNotes)
throw std::runtime_error("no notes");
return (SynthNote*)((char*)mNotes + inIndex * mNoteSize);
}
SynthNote* GetAFreeNote(UInt32 inFrame);
void AddFreeNote(SynthNote* inNote);
friend class SynthGroupElement;
protected:
UInt32 NextNoteID() { return OSAtomicIncrement32((int32_t *)&mNoteIDCounter); }
// call SetNotes in your Initialize() method to give the base class your note structures and to set the maximum
// number of active notes. inNoteData should be an array of size inMaxActiveNotes.
void SetNotes(UInt32 inNumNotes, UInt32 inMaxActiveNotes, SynthNote* inNotes, UInt32 inNoteSize);
void PerformEvents( const AudioTimeStamp & inTimeStamp);
OSStatus SendPedalEvent(MusicDeviceGroupID inGroupID, UInt32 inEventType, UInt32 inOffsetSampleFrame);
virtual SynthNote* VoiceStealing(UInt32 inFrame, bool inKillIt);
UInt32 MaxActiveNotes() const { return mMaxActiveNotes; }
UInt32 NumActiveNotes() const { return mNumActiveNotes; }
void IncNumActiveNotes() { ++mNumActiveNotes; }
void DecNumActiveNotes() { --mNumActiveNotes; }
UInt32 CountActiveNotes();
SynthPartElement * GetPartElement (AudioUnitElement inPartElement);
// this call throws if there's no assigned element for the group ID
virtual SynthGroupElement * GetElForGroupID (MusicDeviceGroupID inGroupID);
virtual SynthGroupElement * GetElForNoteID (NoteInstanceID inNoteID);
SInt64 mAbsoluteSampleFrame;
private:
SInt32 mNoteIDCounter;
SynthEventQueue mEventQueue;
UInt32 mNumNotes;
UInt32 mNumActiveNotes;
UInt32 mMaxActiveNotes;
SynthNote* mNotes;
SynthNoteList mFreeNotes;
UInt32 mNoteSize;
AUScope mPartScope;
const UInt32 mInitNumPartEls;
};
////////////////////////////////////////////////////////////////////////////////////////////////////////////
class AUMonotimbralInstrumentBase : public AUInstrumentBase
{
public:
AUMonotimbralInstrumentBase(
AudioComponentInstance inInstance,
UInt32 numInputs,
UInt32 numOutputs,
UInt32 numGroups = 16,
UInt32 numParts = 1);
virtual OSStatus RealTimeStartNote( SynthGroupElement *inGroup,
NoteInstanceID inNoteInstanceID,
UInt32 inOffsetSampleFrame,
const MusicDeviceNoteParams &inParams);
};
////////////////////////////////////////////////////////////////////////////////////////////////////////////
// this is a work in progress! The mono-timbral one is finished though!
class AUMultitimbralInstrumentBase : public AUInstrumentBase
{
public:
AUMultitimbralInstrumentBase(
AudioComponentInstance inInstance,
UInt32 numInputs,
UInt32 numOutputs,
UInt32 numGroups,
UInt32 numParts);
virtual OSStatus GetPropertyInfo( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable);
virtual OSStatus GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData);
virtual OSStatus SetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
const void * inData,
UInt32 inDataSize);
private:
};
////////////////////////////////////////////////////////////////////////////////////////////////////////////
#endif
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