Initial release
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//------------------------------------------------------------------------
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// Project : VST SDK
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//
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// Category : Helpers
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// Filename : public.sdk/source/vst/auwrapper/auwrapper.h
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// Created by : Steinberg, 12/2007
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// Description : VST 3 -> AU Wrapper
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//
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//-----------------------------------------------------------------------------
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// This file is part of a Steinberg SDK. It is subject to the license terms
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// in the LICENSE file found in the top-level directory of this distribution
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// and at www.steinberg.net/sdklicenses.
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// No part of the SDK, including this file, may be copied, modified, propagated,
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// or distributed except according to the terms contained in the LICENSE file.
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//-----------------------------------------------------------------------------
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/// \cond ignore
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#pragma once
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#ifdef SMTG_AUWRAPPER_USES_AUSDK
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#if CA_USE_AUDIO_PLUGIN_ONLY
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#include "AudioUnitSDK/AUBase.h"
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#define AUWRAPPER_BASE_CLASS ausdk::AUBase
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#else
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#include "AudioUnitSDK/MusicDeviceBase.h"
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#define AUWRAPPER_BASE_CLASS ausdk::MusicDeviceBase
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#endif // CA_USE_AUDIO_PLUGIN_ONLY
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#else
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#if CA_USE_AUDIO_PLUGIN_ONLY
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#include "AudioUnits/AUPublic/AUBase/AUBase.h"
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#define AUWRAPPER_BASE_CLASS AUBase
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#else
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#include "AudioUnits/AUPublic/OtherBases/MusicDeviceBase.h"
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#define AUWRAPPER_BASE_CLASS MusicDeviceBase
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#endif // CA_USE_AUDIO_PLUGIN_ONLY
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#endif // SMTG_AUWRAPPER_USES_AUSDK
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#include "public.sdk/source/vst/hosting/eventlist.h"
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#include "public.sdk/source/vst/hosting/parameterchanges.h"
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#include "public.sdk/source/vst/hosting/processdata.h"
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#include "public.sdk/source/vst/utility/ringbuffer.h"
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#include "public.sdk/source/vst/utility/rttransfer.h"
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#include "base/source/fstring.h"
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#include "base/source/timer.h"
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#include "base/thread/include/flock.h"
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#include "pluginterfaces/vst/ivstaudioprocessor.h"
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#include "pluginterfaces/vst/ivsteditcontroller.h"
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#include "pluginterfaces/vst/ivstmidilearn.h"
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#include "pluginterfaces/vst/ivstprocesscontext.h"
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#include "pluginterfaces/vst/ivstunits.h"
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#include <AudioToolbox/AudioToolbox.h>
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#include <Cocoa/Cocoa.h>
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#include <array>
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#include <map>
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#include <unordered_map>
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#include <vector>
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namespace Steinberg {
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class VST3DynLibrary;
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namespace Vst {
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//------------------------------------------------------------------------
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//------------------------------------------------------------------------
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class AUWrapper : public AUWRAPPER_BASE_CLASS, public IComponentHandler, public ITimerCallback
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{
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public:
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#ifdef SMTG_AUWRAPPER_USES_AUSDK
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using AUElement = ausdk::AUElement;
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#else
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using AudioStreamBasicDescription = CAStreamBasicDescription;
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#endif
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AUWrapper (ComponentInstanceRecord* ci);
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~AUWrapper ();
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//---ComponentBase---------------------
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#if !CA_USE_AUDIO_PLUGIN_ONLY && !defined(SMTG_AUWRAPPER_USES_AUSDK)
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ComponentResult Version () SMTG_OVERRIDE;
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#endif
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void PostConstructor () SMTG_OVERRIDE;
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//---AUBase-----------------------------
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void Cleanup () SMTG_OVERRIDE;
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ComponentResult Initialize () SMTG_OVERRIDE;
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#ifdef SMTG_AUWRAPPER_USES_AUSDK
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std::unique_ptr<AUElement> CreateElement (AudioUnitScope scope, AudioUnitElement element) SMTG_OVERRIDE;
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#else
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AUElement* CreateElement (AudioUnitScope scope, AudioUnitElement element) SMTG_OVERRIDE;
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#endif
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UInt32 SupportedNumChannels (const AUChannelInfo** outInfo) SMTG_OVERRIDE;
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bool StreamFormatWritable (AudioUnitScope scope, AudioUnitElement element) SMTG_OVERRIDE;
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ComponentResult ChangeStreamFormat (AudioUnitScope inScope, AudioUnitElement inElement, const AudioStreamBasicDescription& inPrevFormat, const AudioStreamBasicDescription& inNewFormat) SMTG_OVERRIDE;
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ComponentResult SetConnection (const AudioUnitConnection& inConnection) SMTG_OVERRIDE;
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ComponentResult GetParameterInfo (AudioUnitScope inScope, AudioUnitParameterID inParameterID, AudioUnitParameterInfo& outParameterInfo) SMTG_OVERRIDE;
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ComponentResult SetParameter (AudioUnitParameterID inID, AudioUnitScope inScope, AudioUnitElement inElement, AudioUnitParameterValue inValue, UInt32 inBufferOffsetInFrames) SMTG_OVERRIDE;
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ComponentResult SaveState (CFPropertyListRef* outData) SMTG_OVERRIDE;
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ComponentResult RestoreState (CFPropertyListRef inData) SMTG_OVERRIDE;
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ComponentResult Render (AudioUnitRenderActionFlags &ioActionFlags, const AudioTimeStamp &inTimeStamp, UInt32 inNumberFrames) SMTG_OVERRIDE;
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void processOutputEvents (const AudioTimeStamp &inTimeStamp);
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#if !CA_USE_AUDIO_PLUGIN_ONLY && !defined(SMTG_AUWRAPPER_USES_AUSDK)
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int GetNumCustomUIComponents () SMTG_OVERRIDE;
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void GetUIComponentDescs (ComponentDescription* inDescArray) SMTG_OVERRIDE;
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#endif
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#ifdef SMTG_AUWRAPPER_USES_AUSDK
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OSStatus GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 &outDataSize, bool &outWritable) SMTG_OVERRIDE;
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#else
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OSStatus GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 &outDataSize, Boolean &outWritable) SMTG_OVERRIDE;
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#endif
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ComponentResult GetProperty (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void* outData) SMTG_OVERRIDE;
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ComponentResult SetProperty (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, const void* inData, UInt32 inDataSize) SMTG_OVERRIDE;
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bool CanScheduleParameters() const SMTG_OVERRIDE;
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Float64 GetLatency () SMTG_OVERRIDE;
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Float64 GetTailTime () SMTG_OVERRIDE;
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//---Factory presets
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OSStatus GetPresets (CFArrayRef* outData) const SMTG_OVERRIDE;
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OSStatus NewFactoryPresetSet (const AUPreset& inNewFactoryPreset) SMTG_OVERRIDE;
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#if !CA_USE_AUDIO_PLUGIN_ONLY
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//---MusicDeviceBase-------------------------
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OSStatus HandleNoteOn (UInt8 inChannel, UInt8 inNoteNumber, UInt8 inVelocity, UInt32 inStartFrame) SMTG_OVERRIDE;
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OSStatus HandleNoteOff (UInt8 inChannel, UInt8 inNoteNumber, UInt8 inVelocity, UInt32 inStartFrame) SMTG_OVERRIDE;
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ComponentResult StartNote (MusicDeviceInstrumentID inInstrument, MusicDeviceGroupID inGroupID, NoteInstanceID* outNoteInstanceID, UInt32 inOffsetSampleFrame, const MusicDeviceNoteParams &inParams) SMTG_OVERRIDE;
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ComponentResult StopNote (MusicDeviceGroupID inGroupID, NoteInstanceID inNoteInstanceID, UInt32 inOffsetSampleFrame) SMTG_OVERRIDE;
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OSStatus GetInstrumentCount (UInt32 &outInstCount) const SMTG_OVERRIDE;
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//---AUMIDIBase------------------------------
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OSStatus HandleNonNoteEvent (UInt8 status, UInt8 channel, UInt8 data1, UInt8 data2, UInt32 inStartFrame) SMTG_OVERRIDE;
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#endif
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#if AUSDK_MIDI2_AVAILABLE
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OSStatus MIDIEventList (UInt32 inOffsetSampleFrame,
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const struct MIDIEventList* eventList) override;
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bool handleMIDIEventPacket (UInt32 inOffsetSampleFrame, const MIDIEventPacket* packet);
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#endif
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//---custom----------------------------------
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void setControllerParameter (ParamID pid, ParamValue value);
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// return for a given midiChannel the unitID and the ProgramListID
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bool getProgramListAndUnit (int32 midiChannel, UnitID& unitId, ProgramListID& programListId);
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// restore preset state, add StateType "Project" to stream if loading from project
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ComponentResult restoreState (CFPropertyListRef inData, bool fromProject);
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//------------------------------------------------------------------------
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#if !CA_USE_AUDIO_PLUGIN_ONLY && !defined(SMTG_AUWRAPPER_USES_AUSDK)
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static ComponentResult ComponentEntryDispatch (ComponentParameters* params, AUWrapper* This);
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#endif
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//------------------------------------------------------------------------
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static CFBundleRef gBundleRef;
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//------------------------------------------------------------------------
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DECLARE_FUNKNOWN_METHODS
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protected:
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//---from IComponentHandler-------------------
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tresult PLUGIN_API beginEdit (ParamID tag) SMTG_OVERRIDE;
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tresult PLUGIN_API performEdit (ParamID tag, ParamValue valueNormalized) SMTG_OVERRIDE;
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tresult PLUGIN_API endEdit (ParamID tag) SMTG_OVERRIDE;
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tresult PLUGIN_API restartComponent (int32 flags) SMTG_OVERRIDE;
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//---from ITimerCallback----------------------
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void onTimer (Timer* timer) SMTG_OVERRIDE;
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// internal helpers
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double getSampleRate () const { return sampleRate; }
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void updateProcessContext ();
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void syncParameterValues ();
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void cacheParameterValues ();
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void clearParameterValueCache ();
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void updateProgramChangesCache ();
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virtual IPluginFactory* getFactory ();
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void loadVST3Module ();
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void unloadVST3Module ();
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bool validateChannelPair (int inChannelsIn, int inChannelsOut, const AUChannelInfo* info,
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UInt32 numChanInfo) const;
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IAudioProcessor* audioProcessor;
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IEditController* editController;
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Timer* timer;
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HostProcessData processData;
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ParameterChanges processParamChanges;
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ParameterChanges outputParamChanges;
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ParameterChangeTransfer transferParamChanges;
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ParameterChangeTransfer outputParamTransfer;
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ProcessContext processContext;
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EventList eventList;
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typedef std::map<ParamID, AudioUnitParameterInfo> CachedParameterInfoMap;
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typedef std::map<UnitID, UnitInfo> UnitInfoMap;
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typedef std::vector<String> ClumpGroupVector;
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UnitInfoMap unitInfos;
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ClumpGroupVector clumpGroups;
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CachedParameterInfoMap cachedParameterInfos;
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Steinberg::Base::Thread::FLock parameterCacheChanging;
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NoteInstanceID noteCounter;
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double sampleRate;
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ParamID bypassParamID;
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AUPreset* presets;
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int32 numPresets;
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ParamID factoryProgramChangedID;
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AUParameterListenerRef paramListenerRef;
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std::vector<ParameterInfo> programParameters;
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static constexpr int32 kMaxProgramChangeParameters = 16;
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struct ProgramChangeInfo
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{
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ParamID pid {kNoParamId};
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int32 numPrograms {0};
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};
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using ProgramChangeInfoList = std::array<ProgramChangeInfo, kMaxProgramChangeParameters>;
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using ProgramChangeInfoTransfer = RTTransferT<ProgramChangeInfoList>;
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ProgramChangeInfoList programChangeInfos;
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ProgramChangeInfoTransfer programChangeInfoTransfer;
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// midi mapping
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struct MidiMapping
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{
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using CC2ParamMap = std::unordered_map<CtrlNumber, ParamID>;
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using ChannelList = std::vector<CC2ParamMap>;
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using BusList = std::vector<ChannelList>;
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BusList busList;
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bool empty () const { return busList.empty () || busList[0].empty (); }
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};
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using MidiMappingTransfer = RTTransferT<MidiMapping>;
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MidiMappingTransfer midiMappingTransfer;
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MidiMapping midiMappingCache;
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struct MidiLearnEvent
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{
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int32 busIndex;
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int16 channel;
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CtrlNumber midiCC;
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};
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using MidiLearnRingBuffer = OneReaderOneWriter::RingBuffer<MidiLearnEvent>;
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MidiLearnRingBuffer midiLearnRingBuffer;
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IPtr<IMidiLearn> midiLearn;
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struct MIDIOutputCallbackHelper;
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int32 midiOutCount; // currently only 0 or 1 supported
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std::unique_ptr<MIDIOutputCallbackHelper> mCallbackHelper;
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EventList outputEvents;
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bool isInstrument;
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bool isBypassed;
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bool isOfflineRender;
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private:
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void buildUnitInfos (IUnitInfo* unitInfoController, UnitInfoMap& units) const;
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void updateMidiMappingCache ();
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IPtr<VST3DynLibrary> dynLib;
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};
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//------------------------------------------------------------------------
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class AutoreleasePool
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{
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public:
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AutoreleasePool () { ap = [[NSAutoreleasePool alloc] init]; }
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~AutoreleasePool () { [ap drain]; }
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//------------------------------------------------------------------------
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protected:
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NSAutoreleasePool* ap;
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};
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//------------------------------------------------------------------------
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} // namespace Vst
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} // namespace Steinberg
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/// \endcond
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