path: root/Src/external_dependencies/openmpt-trunk/mptrack/plugins/VstDefinitions.h

/*
 * VstDefinitions.h
 * ----------------
 * Purpose: Definition of all VST-related constants, function prototypes and structures.
 * Notes  : Based on BeRo's independent VST header, a clean-room implementation based
 *          on several third-party information sources.
 *          The original header, licensed under the Zlib license, can be found at
 *          https://github.com/BeRo1985/br808/blob/master/VSTi/VST/VST.pas
 * Authors: OpenMPT Devs
 *          Benjamin "BeRo" Rosseaux
 * The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
 */

#pragma once

#include "openmpt/all/BuildSettings.hpp"

#if MPT_OS_WINDOWS
#define VSTCALLBACK __cdecl
#else
#define VSTCALLBACK
#endif

namespace Vst
{

inline constexpr int32 kVstVersion = 2400;

enum VstStringLengths
{
	kVstMaxProgNameLen = 24,
	kVstMaxParamStrLen = 8,
	kVstMaxVendorStrLen = 64,
	kVstMaxProductStrLen = 64,
	kVstMaxEffectNameLen = 32,

	kVstMaxNameLen = 64,
	kVstMaxLabelLen = 64,
	kVstMaxShortLabelLen = 8,
	kVstMaxCategLabelLen = 24,
	kVstMaxFileNameLen = 100,
};

enum VstFlags : int32
{
	effFlagsHasEditor = 1 << 0,
	effFlagsHasClip = 1 << 1,
	effFlagsHasVu = 1 << 2,
	effFlagsCanMono = 1 << 3,
	effFlagsCanReplacing = 1 << 4,
	effFlagsProgramChunks = 1 << 5,
	effFlagsIsSynth = 1 << 8,
	effFlagsNoSoundInStop = 1 << 9,
	effFlagsExtIsAsync = 1 << 10,
	effFlagsExtHasBuffer = 1 << 11,
	effFlagsCanDoubleReplacing = 1 << 12,
};

enum VstOpcodeToPlugin : int32
{
	effOpen = 0,
	effClose = 1,
	effSetProgram = 2,
	effGetProgram = 3,
	effSetProgramName = 4,
	effGetProgramName = 5,
	effGetParamLabel = 6,
	effGetParamDisplay = 7,
	effGetParamName = 8,
	effGetVu = 9,
	effSetSampleRate = 10,
	effSetBlockSize = 11,
	effMainsChanged = 12,
	effEditGetRect = 13,
	effEditOpen = 14,
	effEditClose = 15,
	effEditDraw = 16,
	effEditMouse = 17,
	effEditKey = 18,
	effEditIdle = 19,
	effEditTop = 20,
	effEditSleep = 21,
	effIdentify = 22,
	effGetChunk = 23,
	effSetChunk = 24,
	effProcessEvents = 25,
	effCanBeAutomated = 26,
	effString2Parameter = 27,
	effGetNumProgramCategories = 28,
	effGetProgramNameIndexed = 29,
	effCopyProgram = 30,
	effConnectInput = 31,
	effConnectOutput = 32,
	effGetInputProperties = 33,
	effGetOutputProperties = 34,
	effGetPlugCategory = 35,
	effGetCurrentPosition = 36,
	effGetDestinationBuffer = 37,
	effOfflineNotify = 38,
	effOfflinePrepare = 39,
	effOfflineRun = 40,
	effProcessVarIo = 41,
	effSetSpeakerArrangement = 42,
	effSetBlockSizeAndSampleRate = 43,
	effSetBypass = 44,
	effGetEffectName = 45,
	effGetErrorText = 46,
	effGetVendorString = 47,
	effGetProductString = 48,
	effGetVendorVersion = 49,
	effVendorSpecific = 50,
	effCanDo = 51,
	effGetTailSize = 52,
	effIdle = 53,
	effGetIcon = 54,
	effSetViewPosition = 55,
	effGetParameterProperties = 56,
	effKeysRequired = 57,
	effGetVstVersion = 58,
	effEditKeyDown = 59,
	effEditKeyUp = 60,
	effSetEditKnobMode = 61,
	effGetMidiProgramName = 62,
	effGetCurrentMidiProgram = 63,
	effGetMidiProgramCategory = 64,
	effHasMidiProgramsChanged = 65,
	effGetMidiKeyName = 66,
	effBeginSetProgram = 67,
	effEndSetProgram = 68,
	effGetSpeakerArrangement = 69,
	effShellGetNextPlugin = 70,
	effStartProcess = 71,
	effStopProcess = 72,
	effSetTotalSampleToProcess = 73,
	effSetPanLaw = 74,
	effBeginLoadBank = 75,
	effBeginLoadProgram = 76,
	effSetProcessPrecision = 77,
	effGetNumMidiInputChannels = 78,
	effGetNumMidiOutputChannels = 79,
};

enum VstOpcodeToHost : int32
{
	audioMasterAutomate = 0,
	audioMasterVersion = 1,
	audioMasterCurrentId = 2,
	audioMasterIdle = 3,
	audioMasterPinConnected = 4,
	audioMasterWantMidi = 6,
	audioMasterGetTime = 7,
	audioMasterProcessEvents = 8,
	audioMasterSetTime = 9,
	audioMasterTempoAt = 10,
	audioMasterGetNumAutomatableParameters = 11,
	audioMasterGetParameterQuantization = 12,
	audioMasterIOChanged = 13,
	audioMasterNeedIdle = 14,
	audioMasterSizeWindow = 15,
	audioMasterGetSampleRate = 16,
	audioMasterGetBlockSize = 17,
	audioMasterGetInputLatency = 18,
	audioMasterGetOutputLatency = 19,
	audioMasterGetPreviousPlug = 20,
	audioMasterGetNextPlug = 21,
	audioMasterWillReplaceOrAccumulate = 22,
	audioMasterGetCurrentProcessLevel = 23,
	audioMasterGetAutomationState = 24,
	audioMasterOfflineStart = 25,
	audioMasterOfflineRead = 26,
	audioMasterOfflineWrite = 27,
	audioMasterOfflineGetCurrentPass = 28,
	audioMasterOfflineGetCurrentMetaPass = 29,
	audioMasterSetOutputSampleRate = 30,
	audioMasterGetOutputSpeakerArrangement = 31,
	audioMasterGetVendorString = 32,
	audioMasterGetProductString = 33,
	audioMasterGetVendorVersion = 34,
	audioMasterVendorSpecific = 35,
	audioMasterSetIcon = 36,
	audioMasterCanDo = 37,
	audioMasterGetLanguage = 38,
	audioMasterOpenWindow = 39,
	audioMasterCloseWindow = 40,
	audioMasterGetDirectory = 41,
	audioMasterUpdateDisplay = 42,
	audioMasterBeginEdit = 43,
	audioMasterEndEdit = 44,
	audioMasterOpenFileSelector = 45,
	audioMasterCloseFileSelector = 46,
	audioMasterEditFile = 47,
	audioMasterGetChunkFile = 48,
	audioMasterGetInputSpeakerArrangement = 49,
};

enum VstEventTypes : int32
{
	kVstMidiType = 1,
	kVstAudioType = 2,
	kVstVideoType = 3,
	kVstParameterType = 4,
	kVstTriggerType = 5,
	kVstSysExType = 6,
};

enum VstEventFlags : int32
{
	kVstMidiEventIsRealtime = 1 << 0,
};

enum VstTimeInfoFlags : int32
{
	kVstTransportChanged = 1,
	kVstTransportPlaying = 1 << 1,
	kVstTransportCycleActive = 1 << 2,
	kVstTransportRecording = 1 << 3,
	kVstAutomationWriting = 1 << 6,
	kVstAutomationReading = 1 << 7,
	kVstNanosValid = 1 << 8,
	kVstPpqPosValid = 1 << 9,
	kVstTempoValid = 1 << 10,
	kVstBarsValid = 1 << 11,
	kVstCyclePosValid = 1 << 12,
	kVstTimeSigValid = 1 << 13,
	kVstSmpteValid = 1 << 14,
	kVstClockValid = 1 << 15,
};

enum VstSmpteFrameRate : int32
{
	kVstSmpte24fps = 0,
	kVstSmpte25fps = 1,
	kVstSmpte2997fps = 2,
	kVstSmpte30fps = 3,
	kVstSmpte2997dfps = 4,
	kVstSmpte30dfps = 5,

	kVstSmpteFilm16mm = 6,
	kVstSmpteFilm35mm = 7,
	kVstSmpte239fps = 10,
	kVstSmpte249fps = 11,
	kVstSmpte599fps = 12,
	kVstSmpte60fps = 13,
};

enum VstLanguage : int32
{
	kVstLangEnglish = 1,
	kVstLangGerman = 2,
	kVstLangFrench = 3,
	kVstLangItalian = 4,
	kVstLangSpanish = 5,
	kVstLangJapanese = 6,
};

enum VstProcessPrecision : int32
{
	kVstProcessPrecision32 = 0,
	kVstProcessPrecision64 = 1,
};

enum VstParameterFlags : int32
{
	kVstParameterIsSwitch = 1 << 0,
	kVstParameterUsesIntegerMinMax = 1 << 1,
	kVstParameterUsesFloatStep = 1 << 2,
	kVstParameterUsesIntStep = 1 << 3,
	kVstParameterSupportsDisplayIndex = 1 << 4,
	kVstParameterSupportsDisplayCategory = 1 << 5,
	kVstParameterCanRamp = 1 << 6,
};

enum VstPinPropertiesFlags : int32
{
	kVstPinIsActive = 1 << 0,
	kVstPinIsStereo = 1 << 1,
	kVstPinUseSpeaker = 1 << 2,
};

enum VstPlugCategory : int32
{
	kPlugCategUnknown = 0,
	kPlugCategEffect = 1,
	kPlugCategSynth = 2,
	kPlugCategAnalysis = 3,
	kPlugCategMastering = 4,
	kPlugCategSpacializer = 5,
	kPlugCategRoomFx = 6,
	kPlugSurroundFx = 7,
	kPlugCategRestoration = 8,
	kPlugCategOfflineProcess = 9,
	kPlugCategShell = 10,
	kPlugCategGenerator = 11,
	kPlugCategMaxCount = 12,
};

enum VstMidiProgramNameFlags : int32
{
	kMidiIsOmni = 1,
};

enum VstSpeakerType : int32
{
	kSpeakerUndefined = 0x7FFFFFFF,
	kSpeakerM = 0,
	kSpeakerL = 1,
	kSpeakerR = 2,
	kSpeakerC = 3,
	kSpeakerLfe = 4,
	kSpeakerLs = 5,
	kSpeakerRs = 6,
	kSpeakerLc = 7,
	kSpeakerRc = 8,
	kSpeakerS = 9,
	kSpeakerCs = kSpeakerS,
	kSpeakerSl = 10,
	kSpeakerSr = 11,
	kSpeakerTm = 12,
	kSpeakerTfl = 13,
	kSpeakerTfc = 14,
	kSpeakerTfr = 15,
	kSpeakerTrl = 16,
	kSpeakerTrc = 17,
	kSpeakerTrr = 18,
	kSpeakerLfe2 = 19,

	kSpeakerU32 = -32,
	kSpeakerU31 = -31,
	kSpeakerU30 = -30,
	kSpeakerU29 = -29,
	kSpeakerU28 = -28,
	kSpeakerU27 = -27,
	kSpeakerU26 = -26,
	kSpeakerU25 = -25,
	kSpeakerU24 = -24,
	kSpeakerU23 = -23,
	kSpeakerU22 = -22,
	kSpeakerU21 = -21,
	kSpeakerU20 = -20,
	kSpeakerU19 = -19,
	kSpeakerU18 = -18,
	kSpeakerU17 = -17,
	kSpeakerU16 = -16,
	kSpeakerU15 = -15,
	kSpeakerU14 = -14,
	kSpeakerU13 = -13,
	kSpeakerU12 = -12,
	kSpeakerU11 = -11,
	kSpeakerU10 = -10,
	kSpeakerU9 = -9,
	kSpeakerU8 = -8,
	kSpeakerU7 = -7,
	kSpeakerU6 = -6,
	kSpeakerU5 = -5,
	kSpeakerU4 = -4,
	kSpeakerU3 = -3,
	kSpeakerU2 = -2,
	kSpeakerU1 = -1,
};

enum VstSpeakerArrangementType : int32
{
	kSpeakerArrUserDefined = -2,
	kSpeakerArrEmpty = -1,
	kSpeakerArrMono = 0,
	kSpeakerArrStereo = 1,
	kSpeakerArrStereoSurround = 2,
	kSpeakerArrStereoCenter = 3,
	kSpeakerArrStereoSide = 4,
	kSpeakerArrStereoCLfe = 5,
	kSpeakerArr30Cine = 6,
	kSpeakerArr30Music = 7,
	kSpeakerArr31Cine = 8,
	kSpeakerArr31Music = 9,
	kSpeakerArr40Cine = 10,
	kSpeakerArr40Music = 11,
	kSpeakerArr41Cine = 12,
	kSpeakerArr41Music = 13,
	kSpeakerArr50 = 14,
	kSpeakerArr51 = 15,
	kSpeakerArr60Cine = 16,
	kSpeakerArr60Music = 17,
	kSpeakerArr61Cine = 18,
	kSpeakerArr61Music = 19,
	kSpeakerArr70Cine = 20,
	kSpeakerArr70Music = 21,
	kSpeakerArr71Cine = 22,
	kSpeakerArr71Music = 23,
	kSpeakerArr80Cine = 24,
	kSpeakerArr80Music = 25,
	kSpeakerArr81Cine = 26,
	kSpeakerArr81Music = 27,
	kSpeakerArr102 = 28,
	kNumSpeakerArr = 29,
};

enum VstOfflineTaskFlags : int32
{
	kVstOfflineUnvalidParameter = 1 << 0,
	kVstOfflineNewFile = 1 << 1,

	kVstOfflinePlugError = 1 << 10,
	kVstOfflineInterleavedAudio = 1 << 11,
	kVstOfflineTempOutputFile = 1 << 12,
	kVstOfflineFloatOutputFile = 1 << 13,
	kVstOfflineRandomWrite = 1 << 14,
	kVstOfflineStretch = 1 << 15,
	kVstOfflineNoThread = 1 << 16,
};

enum VstOfflineOption : int32
{
	kVstOfflineAudio = 0,
	kVstOfflinePeaks = 1,
	kVstOfflineParameter = 2,
	kVstOfflineMarker = 3,
	kVstOfflineCursor = 4,
	kVstOfflineSelection = 5,
	kVstOfflineQueryFiles = 6,
};

enum VstAudioFileFlags : int32
{
	kVstOfflineReadOnly = 1 << 0,
	kVstOfflineNoRateConversion = 1 << 1,
	kVstOfflineNoChannelChange = 1 << 2,

	kVstOfflineCanProcessSelection = 1 << 10,
	kVstOfflineNoCrossfade = 1 << 11,
	kVstOfflineWantRead = 1 << 12,
	kVstOfflineWantWrite = 1 << 13,
	kVstOfflineWantWriteMarker = 1 << 14,
	kVstOfflineWantMoveCursor = 1 << 15,
	kVstOfflineWantSelect = 1 << 16,
};

enum VstVirtualKey : uint8
{
	VKEY_BACK = 1,
	VKEY_TAB = 2,
	VKEY_CLEAR = 3,
	VKEY_RETURN = 4,
	VKEY_PAUSE = 5,
	VKEY_ESCAPE = 6,
	VKEY_SPACE = 7,
	VKEY_NEXT = 8,
	VKEY_END = 9,
	VKEY_HOME = 10,

	VKEY_LEFT = 11,
	VKEY_UP = 12,
	VKEY_RIGHT = 13,
	VKEY_DOWN = 14,
	VKEY_PAGEUP = 15,
	VKEY_PAGEDOWN = 16,

	VKEY_SELECT = 17,
	VKEY_PRINT = 18,
	VKEY_ENTER = 19,
	VKEY_SNAPSHOT = 20,
	VKEY_INSERT = 21,
	VKEY_DELETE = 22,
	VKEY_HELP = 23,
	VKEY_NUMPAD0 = 24,
	VKEY_NUMPAD1 = 25,
	VKEY_NUMPAD2 = 26,
	VKEY_NUMPAD3 = 27,
	VKEY_NUMPAD4 = 28,
	VKEY_NUMPAD5 = 29,
	VKEY_NUMPAD6 = 30,
	VKEY_NUMPAD7 = 31,
	VKEY_NUMPAD8 = 32,
	VKEY_NUMPAD9 = 33,
	VKEY_MULTIPLY = 34,
	VKEY_ADD = 35,
	VKEY_SEPARATOR = 36,
	VKEY_SUBTRACT = 37,
	VKEY_DECIMAL = 38,
	VKEY_DIVIDE = 39,
	VKEY_F1 = 40,
	VKEY_F2 = 41,
	VKEY_F3 = 42,
	VKEY_F4 = 43,
	VKEY_F5 = 44,
	VKEY_F6 = 45,
	VKEY_F7 = 46,
	VKEY_F8 = 47,
	VKEY_F9 = 48,
	VKEY_F10 = 49,
	VKEY_F11 = 50,
	VKEY_F12 = 51,
	VKEY_NUMLOCK = 52,
	VKEY_SCROLL = 53,

	VKEY_SHIFT = 54,
	VKEY_CONTROL = 55,
	VKEY_ALT = 56,

	VKEY_EQUALS = 57,
};

enum VstModifierKey : uint8
{
	MODIFIER_SHIFT = 1 << 0,
	MODIFIER_ALTERNATE = 1 << 1,
	MODIFIER_COMMAND = 1 << 2,
	MODIFIER_CONTROL = 1 << 3,
};

enum VstFileSelectCommand : int32
{
	kVstFileLoad = 0,
	kVstFileSave = 1,
	kVstMultipleFilesLoad = 2,
	kVstDirectorySelect = 3,
};

enum VstFileSelectType : int32
{
	kVstFileType = 0,
};

enum VstPanLaw : int32
{
	kLinearPanLaw = 0,
	kEqualPowerPanLaw = 1,
};

enum VstProcessLevel : int32
{
	kVstProcessLevelUnknown = 0,
	kVstProcessLevelUser = 1,
	kVstProcessLevelRealtime = 2,
	kVstProcessLevelPrefetch = 3,
	kVstProcessLevelOffline = 4,
};

enum VstAutomationState : int32
{
	kVstAutomationUnsupported = 0,
	kVstAutomationOff = 1,
	kVstAutomationRead = 2,
	kVstAutomationWrite = 3,
	kVstAutomationReadWrite = 4,
};


namespace HostCanDo
{
inline constexpr char sendVstEvents[] = "sendVstEvents";
inline constexpr char sendVstMidiEvent[] = "sendVstMidiEvent";
inline constexpr char sendVstTimeInfo[] = "sendVstTimeInfo";
inline constexpr char receiveVstEvents[] = "receiveVstEvents";
inline constexpr char receiveVstMidiEvent[] = "receiveVstMidiEvent";
inline constexpr char reportConnectionChanges[] = "reportConnectionChanges";
inline constexpr char acceptIOChanges[] = "acceptIOChanges";
inline constexpr char sizeWindow[] = "sizeWindow";
inline constexpr char asyncProcessing[] = "asyncProcessing";
inline constexpr char ofline[] = "offline";
inline constexpr char supplyIdle[] = "supplyIdle";
inline constexpr char supportShell[] = "supportShell";
inline constexpr char openFileSelector[] = "openFileSelector";
inline constexpr char closeFileSelector[] = "closeFileSelector";
inline constexpr char startStopProcess[] = "startStopProcess";
inline constexpr char shellCategory[] = "shellCategory";
inline constexpr char editFile[] = "editFile";
inline constexpr char sendVstMidiEventFlagIsRealtime[] = "sendVstMidiEventFlagIsRealtime";
}  // namespace HostCanDo

namespace PluginCanDo
{
inline constexpr char sendVstEvents[] = "sendVstEvents";
inline constexpr char sendVstMidiEvent[] = "sendVstMidiEvent";
inline constexpr char receiveVstEvents[] = "receiveVstEvents";
inline constexpr char receiveVstMidiEvent[] = "receiveVstMidiEvent";
inline constexpr char receiveVstTimeInfo[] = "receiveVstTimeInfo";
inline constexpr char offline[] = "offline";
inline constexpr char midiProgramNames[] = "midiProgramNames";
inline constexpr char bypass[] = "bypass";
inline constexpr char MPE[] = "MPE";
}  // namespace PluginCanDo


struct AEffect;
typedef intptr_t(VSTCALLBACK *AudioMasterCallbackFunc)(AEffect *effect, VstOpcodeToHost opcode, int32 index, intptr_t value, void *ptr, float opt);
typedef intptr_t(VSTCALLBACK *DispatcherFunc)(AEffect *effect, VstOpcodeToPlugin opcode, int32 index, intptr_t value, void *ptr, float opt);
typedef void(VSTCALLBACK *ProcessProc)(AEffect *effect, float **inputs, float **outputs, int32 sampleFrames);
typedef void(VSTCALLBACK *ProcessDoubleProc)(AEffect *effect, double **inputs, double **outputs, int32 sampleFrames);
typedef void(VSTCALLBACK *SetParameterProc)(AEffect *effect, int32 index, float parameter);
typedef float(VSTCALLBACK *GetParameterFunc)(AEffect *effect, int32 index);
typedef AEffect *(VSTCALLBACK *MainProc)(AudioMasterCallbackFunc audioMaster);

#pragma pack(push, 8)

struct AEffect
{
	int32 magic;
	DispatcherFunc dispatcher;
	ProcessProc process;
	SetParameterProc setParameter;
	GetParameterFunc getParameter;
	int32 numPrograms;
	uint32 numParams;
	int32 numInputs;
	int32 numOutputs;
	VstFlags flags;
	void *reservedForHost1;
	void *reservedForHost2;
	int32 initialDelay;
	int32 realQualities;
	int32 offQualities;
	float ioRatio;
	void *object;
	void *user;
	int32 uniqueID;
	int32 version;
	ProcessProc processReplacing;
	ProcessDoubleProc processDoubleReplacing;
};

struct ERect
{
	int16 top, left, bottom, right;

	int16 Width() const { return right - left; }
	int16 Height() const { return bottom - top; }
};

struct VstEvent
{
	VstEventTypes type;
	int32 byteSize;
	int32 deltaFrames;
	VstEventFlags flags;
};

struct VstEvents
{
	static constexpr size_t MAX_EVENTS = 256;

	int32 numEvents;
	intptr_t reserved;
	VstEvent *events[MAX_EVENTS];

	size_t size() { return numEvents; }
	auto begin() { return std::begin(events); }
	auto end() { return std::begin(events) + numEvents; }
	auto begin() const { return std::begin(events); }
	auto end() const { return std::begin(events) + numEvents; }
	auto cbegin() const { return std::cbegin(events); }
	auto cend() const { return std::cbegin(events) + numEvents; }
};

struct VstMidiEvent : public VstEvent
{
	int32 noteLength;
	int32 noteOffset;
	uint32 midiData;
	int8 detune;
	int8 noteOffVelocity;
	int8 reserved1;
	int8 reserved2;
};

struct VstMidiSysexEvent : public VstEvent
{
	int32 dumpBytes;
	intptr_t reserved1;
	const std::byte *sysexDump;
	intptr_t reserved2;
};

struct VstTimeInfo
{
	double samplePos;
	double sampleRate;
	double nanoSeconds;
	double ppqPos;
	double tempo;
	double barStartPos;
	double cycleStartPos;
	double cycleEndPos;
	int32 timeSigNumerator;
	int32 timeSigDenominator;
	int32 smpteOffset;
	VstSmpteFrameRate smpteFrameRate;
	int32 samplesToNextClock;
	VstTimeInfoFlags flags;
};

struct VstVariableIo
{
	float **inputs;
	float **outputs;
	int32 numSamplesInput;
	int32 numSamplesOutput;
	int32 *numSamplesInputProcessed;
	int32 *numSamplesOutputProcessed;
};

struct VstParameterProperties
{
	float stepFloat;
	float smallStepFloat;
	float largeStepFloat;
	char label[kVstMaxLabelLen];
	VstParameterFlags flags;
	int32 minInteger;
	int32 maxInteger;
	int32 stepInteger;
	int32 largeStepInteger;
	char shortLabel[kVstMaxShortLabelLen];
	int16 displayIndex;
	int16 category;
	int16 numParametersInCategory;
	int16 reserved;
	char categoryLabel[kVstMaxCategLabelLen];
	int8 reserved2[16];
};

struct VstPinProperties
{
	char label[kVstMaxLabelLen];
	VstPinPropertiesFlags flags;
	VstSpeakerArrangementType arragementType;
	char shortLabel[kVstMaxShortLabelLen];
	int8 reserved[48];
};

struct MidiProgramName
{
	int32 thisProgramIndex;
	char name[kVstMaxNameLen];
	int8 midiProgram;
	int8 midiBankMSB;
	int8 midiBankLSB;
	int8 reserved;
	int32 parentCategoryIndex;
	VstMidiProgramNameFlags flags;
};

struct MidiProgramCategory
{
	int32 thisCategoryIndex;
	char name[kVstMaxNameLen];
	int32 parentCategoryIndex;
	int32 flags;
};

struct MidiKeyName
{
	int32 thisProgramIndex;
	int32 thisKeyNumber;
	char keyName[kVstMaxNameLen];
	int32 reserved;
	int32 flags;
};

struct VstSpeakerProperties
{
	float azimuth;
	float elevation;
	float radius;
	float reserved1;
	char name[kVstMaxNameLen];
	VstSpeakerType type;
	int8 reserved2[28];
};

struct VstSpeakerArrangement
{
	VstSpeakerArrangementType type;
	int32 numChannels;
	VstSpeakerProperties speakers[8];
};

struct VstOfflineTask
{
	char processName[96];
	double readPosition;
	double writePosition;
	int32 readCount;
	int32 writeCount;
	int32 sizeInputBuffer;
	int32 sizeOutputBuffer;
	void *inputBuffer;
	void *outputBuffer;
	double positionToProcessFrom;
	double numFramesToProcess;
	double maxFramesToWrite;
	void *extraBuffer;
	int32 value;
	int32 index;
	double numFramesInSourceFile;
	double sourceSampleRate;
	double destinationSampleRate;
	int32 numSourceChannels;
	int32 numDestinationChannels;
	int32 sourceFormat;
	int32 destinationFormat;
	char outputText[512];
	double progress;
	int32 progressMode;
	char progressText[100];
	VstOfflineTaskFlags flags;
	int32 returnValue;
	void *hostOwned;
	void *plugOwned;
	int8 reserved[1024];
};

struct VstAudioFile
{
	VstAudioFileFlags flags;
	void *hostOwned;
	void *plugOwned;
	char name[kVstMaxFileNameLen];
	int32 uniqueID;
	double sampleRate;
	int32 numChannels;
	double numFrames;
	int32 format;
	double editCursorPosition;
	double selectionStart;
	double selectionSize;
	int32 selectedChannelsMask;
	int32 numMarkers;
	int32 timeRulerUnit;
	double timeRulerOffset;
	double tempo;
	int32 timeSigNumerator;
	int32 timeSigDenominator;
	int32 ticksPerBlackNote;
	int32 smtpeFrameRate;
	int8 reserved[64];
};

struct VstAudioFileMarker
{
	double position;
	char name[32];
	int32 type;
	int32 id;
	int32 reserved;
};

struct VstWindow
{
	char title[128];
	int16 xPos;
	int16 yPos;
	int16 width;
	int16 height;
	int32 style;
	void *parent;
	void *userHandle;
	void *windowHandle;
	int8 reserved[104];
};

struct VstKeyCode
{
	int32 characterCode;
	VstVirtualKey virtualCode;
	VstModifierKey modifierCode;
};

struct VstFileType
{
	char name[128];
	char macType[8];
	char dosType[8];
	char unixType[8];
	char mimeType1[128];
	char mimeType2[128];
};

struct VstFileSelect
{
	VstFileSelectCommand command;
	VstFileSelectType type;
	int32 macCreator;
	int32 numFileTypes;
	VstFileType *fileTypes;
	char title[1024];
	char *initialPath;
	char *returnPath;
	int32 sizeReturnPath;
	char **returnMultiplePaths;
	int32 numReturnPaths;
	intptr_t reserved;
	int8 reserved2[116];
};

struct VstPatchChunkInfo
{
	int32 version;
	int32 pluginUniqueID;
	int32 pluginVersion;
	int32 numElements;
	int8 reserved[48];
};

#pragma pack(pop)

int32 constexpr FourCC(const char (&cc)[5])
{
	return static_cast<int32>(static_cast<uint32>(cc[3]) | (static_cast<uint32>(cc[2]) << 8) | (static_cast<uint32>(cc[1]) << 16) | (static_cast<uint32>(cc[0]) << 24));
}

inline constexpr int32 kEffectMagic = FourCC("VstP");

template <typename T>
constexpr T *FromIntPtr(intptr_t v)
{
	return reinterpret_cast<T *>(v);
}

template <typename T>
constexpr intptr_t ToIntPtr(T *v)
{
	return reinterpret_cast<intptr_t>(v);
}

}  // namespace Vst