Initial release

engine/vendor/vst3sdk/public.sdk/source/vst/interappaudio/VST3Plugin.h

@@ -0,0 +1,133 @@
+//-----------------------------------------------------------------------------
+// Project     : VST SDK
+//
+// Category    : Helpers
+// Filename    : public.sdk/source/vst/interappaudio/VST3Plugin.h
+// Created by  : Steinberg, 08/2013.
+// Description : VST 3 InterAppAudio
+// Flags       : clang-format SMTGSequencer
+//
+//-----------------------------------------------------------------------------
+// This file is part of a Steinberg SDK. It is subject to the license terms
+// in the LICENSE file found in the top-level directory of this distribution
+// and at www.steinberg.net/sdklicenses.
+// No part of the SDK, including this file, may be copied, modified, propagated,
+// or distributed except according to the terms contained in the LICENSE file.
+//-----------------------------------------------------------------------------
+
+#pragma once
+
+/// \cond ignore
+
+#import "AudioIO.h"
+#import "public.sdk/source/vst/hosting/eventlist.h"
+#import "public.sdk/source/vst/hosting/parameterchanges.h"
+#import "public.sdk/source/vst/hosting/processdata.h"
+#import "public.sdk/source/vst/utility/ringbuffer.h"
+#import "base/source/fobject.h"
+#import "base/source/timer.h"
+#import "pluginterfaces/vst/ivstaudioprocessor.h"
+#import "pluginterfaces/vst/ivsteditcontroller.h"
+#import "pluginterfaces/vst/ivstprocesscontext.h"
+#import <atomic>
+#import <map>
+
+#ifndef __OBJC__
+struct NSData;
+#endif
+
+namespace Steinberg {
+namespace Vst {
+namespace InterAppAudio {
+
+static const int32 kMaxUIEvents = 100;
+
+//------------------------------------------------------------------------
+class VST3Plugin : public FObject,
+                   public IComponentHandler,
+                   public IAudioIOProcessor,
+                   public ITimerCallback
+{
+public:
+//------------------------------------------------------------------------
+	VST3Plugin ();
+	virtual ~VST3Plugin ();
+
+	bool init ();
+
+	IEditController* getEditController () const { return editController; }
+	IAudioProcessor* getAudioProcessor () const { return processor; }
+
+	tresult scheduleEventFromUI (Event& event);
+
+	NSData* getProcessorState ();
+	bool setProcessorState (NSData* data);
+
+	NSData* getControllerState ();
+	bool setControllerState (NSData* data);
+
+	OBJ_METHODS (VST3Plugin, FObject)
+	REFCOUNT_METHODS (FObject)
+	DEFINE_INTERFACES
+		DEF_INTERFACE (IComponentHandler)
+	END_DEFINE_INTERFACES (FObject)
+protected:
+	typedef std::map<uint32, uint32> NoteIDPitchMap;
+	typedef uint32 ChannelAndCtrlNumber;
+	typedef std::map<ChannelAndCtrlNumber, ParamID> MIDIControllerToParamIDMap;
+
+	void createProcessorAndController ();
+
+	void updateProcessContext (AudioIO* audioIO);
+	MIDIControllerToParamIDMap createMIDIControllerToParamIDMap ();
+
+	// IComponentHandler
+	tresult PLUGIN_API beginEdit (ParamID id) override;
+	tresult PLUGIN_API performEdit (ParamID id, ParamValue valueNormalized) override;
+	tresult PLUGIN_API endEdit (ParamID id) override;
+	tresult PLUGIN_API restartComponent (int32 flags) override;
+
+	// IAudioIOProcessor
+	void willStartAudio (AudioIO* audioIO) override;
+	void didStopAudio (AudioIO* audioIO) override;
+	void onMIDIEvent (UInt32 status, UInt32 data1, UInt32 data2, UInt32 sampleOffset,
+	                  bool withinRealtimeThread) override;
+	void process (const AudioTimeStamp* timeStamp, UInt32 busNumber, UInt32 numFrames,
+	              AudioBufferList* ioData, bool& outputIsSilence, AudioIO* audioIO) override;
+
+	// ITimerCallback
+	void onTimer (Timer* timer) override;
+
+	IAudioProcessor* processor {nullptr};
+	IEditController* editController {nullptr};
+	Timer* timer {nullptr};
+
+	HostProcessData processData;
+	ProcessContext processContext;
+	ParameterChangeTransfer inputParamChangeTransfer;
+	ParameterChangeTransfer outputParamChangeTransfer;
+	ParameterChanges inputParamChanges;
+	ParameterChanges outputParamChanges;
+	EventList inputEvents;
+
+	NoteIDPitchMap noteIDPitchMap;
+	std::atomic<int32> lastNodeID {0};
+
+	bool processing {false};
+
+	MIDIControllerToParamIDMap midiControllerToParamIDMap;
+
+	OneReaderOneWriter::RingBuffer<Event> uiScheduledEvents;
+
+	static ChannelAndCtrlNumber channelAndCtrlNumber (uint16 channel, CtrlNumber ctrler)
+	{
+		return (channel << 16) + ctrler;
+	}
+};
+
+//------------------------------------------------------------------------
+} // namespace InterAppAudio
+} // namespace Vst
+} // namespace Steinberg
+
+/// \endcond