228 lines
7.4 KiB
C++
228 lines
7.4 KiB
C++
/*
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File: SynthElement.h
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Abstract: Part of CoreAudio Utility Classes
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Version: 1.1
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
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Inc. ("Apple") in consideration of your agreement to the following
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terms, and your use, installation, modification or redistribution of
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this Apple software constitutes acceptance of these terms. If you do
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not agree with these terms, please do not use, install, modify or
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redistribute this Apple software.
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In consideration of your agreement to abide by the following terms, and
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subject to these terms, Apple grants you a personal, non-exclusive
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license, under Apple's copyrights in this original Apple software (the
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"Apple Software"), to use, reproduce, modify and redistribute the Apple
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Software, with or without modifications, in source and/or binary forms;
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provided that if you redistribute the Apple Software in its entirety and
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without modifications, you must retain this notice and the following
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text and disclaimers in all such redistributions of the Apple Software.
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Neither the name, trademarks, service marks or logos of Apple Inc. may
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be used to endorse or promote products derived from the Apple Software
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without specific prior written permission from Apple. Except as
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expressly stated in this notice, no other rights or licenses, express or
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implied, are granted by Apple herein, including but not limited to any
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patent rights that may be infringed by your derivative works or by other
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works in which the Apple Software may be incorporated.
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The Apple Software is provided by Apple on an "AS IS" basis. APPLE
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MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
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OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
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MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
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AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
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STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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Copyright (C) 2014 Apple Inc. All Rights Reserved.
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*/
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#ifndef __SynthElement__
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#define __SynthElement__
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#include <AudioUnit/AudioUnit.h>
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#include "MusicDeviceBase.h"
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#include "SynthNoteList.h"
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#include "MIDIControlHandler.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////////////
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class AUInstrumentBase;
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class SynthElement : public AUElement
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{
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public:
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SynthElement(AUInstrumentBase *audioUnit, UInt32 inElement);
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virtual ~SynthElement();
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UInt32 GetIndex() const { return mIndex; }
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AUInstrumentBase* GetAUInstrument() { return (AUInstrumentBase*)GetAudioUnit(); }
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private:
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UInt32 mIndex;
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};
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class MidiControls : public MIDIControlHandler
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{
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enum { kMaxControls = 128 };
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public:
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MidiControls();
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virtual ~MidiControls() {}
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virtual void Reset();
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virtual bool SetProgramChange(UInt16 inProgram) { mProgramChange = inProgram; return true; }
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virtual bool SetPitchWheel(UInt16 inValue) {
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mPitchBend = inValue;
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mFPitchBend = (float)(((SInt16)mPitchBend - 8192) / 8192.);
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return true;
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}
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virtual bool SetChannelPressure(UInt8 inValue) { mMonoPressure = inValue; return true; }
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virtual bool SetPolyPressure(UInt8 inKey, UInt8 inValue) {
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mPolyPressure[inKey] = inValue;
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return true;
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}
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virtual bool SetController(UInt8 inControllerNumber, UInt8 inValue) {
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if (inControllerNumber < kMaxControls) {
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mControls[inControllerNumber] = inValue;
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return true;
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}
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return false;
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}
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virtual bool SetSysex(void *inSysexMsg) { return false; }
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virtual float GetPitchBend() const { return mFPitchBend * mFPitchBendDepth; }
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SInt16 GetHiResControl(UInt32 inIndex) const
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{
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return ((mControls[inIndex] & 127) << 7) | (mControls[inIndex + 32] & 127);
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}
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float GetControl(UInt32 inIndex) const
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{
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if (inIndex < 32) {
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return (float)(mControls[inIndex] + (mControls[inIndex + 32] / 127.));
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} else {
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return (float)mControls[inIndex];
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}
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}
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private:
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UInt8 mControls[128];
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UInt8 mPolyPressure[128];
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UInt8 mMonoPressure;
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UInt8 mProgramChange;
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UInt16 mPitchBend;
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UInt16 mActiveRPN;
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UInt16 mActiveNRPN;
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UInt16 mActiveRPValue;
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UInt16 mActiveNRPValue;
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UInt16 mPitchBendDepth;
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float mFPitchBendDepth;
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float mFPitchBend;
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void SetHiResControl(UInt32 inIndex, UInt8 inMSB, UInt8 inLSB)
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{
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mControls[inIndex] = inMSB;
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mControls[inIndex + 32] = inLSB;
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}
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};
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class SynthGroupElement : public SynthElement
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{
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public:
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enum {
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kUnassignedGroup = 0xFFFFFFFF
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};
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SynthGroupElement(AUInstrumentBase *audioUnit, UInt32 inElement, MIDIControlHandler *inHandler);
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virtual ~SynthGroupElement();
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virtual void NoteOn(SynthNote *note, SynthPartElement *part, NoteInstanceID inNoteID, UInt32 inOffsetSampleFrame, const MusicDeviceNoteParams &inParams);
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virtual void NoteOff(NoteInstanceID inNoteID, UInt32 inOffsetSampleFrame);
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void SustainOn(UInt32 inFrame);
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void SustainOff(UInt32 inFrame);
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void SostenutoOn(UInt32 inFrame);
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void SostenutoOff(UInt32 inFrame);
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void NoteEnded(SynthNote *inNote, UInt32 inFrame);
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void NoteFastReleased(SynthNote *inNote);
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virtual bool ChannelMessage(UInt16 controlID, UInt16 controlValue);
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virtual void AllNotesOff(UInt32 inFrame);
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virtual void AllSoundOff(UInt32 inFrame);
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void ResetAllControllers(UInt32 inFrame);
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SynthNote * GetNote(NoteInstanceID inNoteID, bool unreleasedOnly=false, UInt32 *outNoteState=NULL);
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void Reset();
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virtual OSStatus Render(SInt64 inAbsoluteSampleFrame, UInt32 inNumberFrames, AUScope &outputs);
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float GetPitchBend() const { return mMidiControlHandler->GetPitchBend(); }
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SInt64 GetCurrentAbsoluteFrame() const { return mCurrentAbsoluteFrame; }
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MusicDeviceGroupID GroupID () const { return mGroupID; }
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virtual void SetGroupID (MusicDeviceGroupID inGroup);
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MIDIControlHandler * GetMIDIControlHandler() const { return mMidiControlHandler; }
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protected:
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SInt64 mCurrentAbsoluteFrame;
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SynthNoteList mNoteList[kNumberOfSoundingNoteStates];
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MIDIControlHandler *mMidiControlHandler;
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private:
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friend class AUInstrumentBase;
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friend class AUMonotimbralInstrumentBase;
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friend class AUMultitimbralInstrumentBase;
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bool mSustainIsOn;
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bool mSostenutoIsOn;
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UInt32 mOutputBus;
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MusicDeviceGroupID mGroupID;
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////////////
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struct SynthKeyZone
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{
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UInt8 mLoNote;
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UInt8 mHiNote;
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UInt8 mLoVelocity;
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UInt8 mHiVelocity;
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////////////
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const UInt32 kUnlimitedPolyphony = 0xFFFFFFFF;
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class SynthPartElement : public SynthElement
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{
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public:
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SynthPartElement(AUInstrumentBase *audioUnit, UInt32 inElement);
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UInt32 GetGroupIndex() const { return mGroupIndex; }
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bool InRange(Float32 inNote, Float32 inVelocity);
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UInt32 GetMaxPolyphony() const { return mMaxPolyphony; }
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void SetMaxPolyphony(UInt32 inMaxPolyphony) { mMaxPolyphony = inMaxPolyphony; }
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private:
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UInt32 mGroupIndex;
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UInt32 mPatchIndex;
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UInt32 mMaxPolyphony;
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SynthKeyZone mKeyZone;
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};
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#endif
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