using System;
using System.Runtime.InteropServices;
using System.Text;

namespace Valve.VR
{
	public struct IVRSystem
	{
		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate void _GetRecommendedRenderTargetSize(ref uint pnWidth, ref uint pnHeight);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate HmdMatrix44_t _GetProjectionMatrix(EVREye eEye, float fNearZ, float fFarZ);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate void _GetProjectionRaw(EVREye eEye, ref float pfLeft, ref float pfRight, ref float pfTop, ref float pfBottom);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _ComputeDistortion(EVREye eEye, float fU, float fV, ref DistortionCoordinates_t pDistortionCoordinates);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate HmdMatrix34_t _GetEyeToHeadTransform(EVREye eEye);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _GetTimeSinceLastVsync(ref float pfSecondsSinceLastVsync, ref ulong pulFrameCounter);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate int _GetD3D9AdapterIndex();

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate void _GetDXGIOutputInfo(ref int pnAdapterIndex);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate void _GetOutputDevice(ref ulong pnDevice, ETextureType textureType, IntPtr pInstance);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _IsDisplayOnDesktop();

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _SetDisplayVisibility(bool bIsVisibleOnDesktop);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate void _GetDeviceToAbsoluteTrackingPose(ETrackingUniverseOrigin eOrigin, float fPredictedSecondsToPhotonsFromNow, [In][Out] TrackedDevicePose_t[] pTrackedDevicePoseArray, uint unTrackedDevicePoseArrayCount);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate void _ResetSeatedZeroPose();

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate HmdMatrix34_t _GetSeatedZeroPoseToStandingAbsoluteTrackingPose();

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate HmdMatrix34_t _GetRawZeroPoseToStandingAbsoluteTrackingPose();

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate uint _GetSortedTrackedDeviceIndicesOfClass(ETrackedDeviceClass eTrackedDeviceClass, [In][Out] uint[] punTrackedDeviceIndexArray, uint unTrackedDeviceIndexArrayCount, uint unRelativeToTrackedDeviceIndex);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate EDeviceActivityLevel _GetTrackedDeviceActivityLevel(uint unDeviceId);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate void _ApplyTransform(ref TrackedDevicePose_t pOutputPose, ref TrackedDevicePose_t pTrackedDevicePose, ref HmdMatrix34_t pTransform);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate uint _GetTrackedDeviceIndexForControllerRole(ETrackedControllerRole unDeviceType);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate ETrackedControllerRole _GetControllerRoleForTrackedDeviceIndex(uint unDeviceIndex);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate ETrackedDeviceClass _GetTrackedDeviceClass(uint unDeviceIndex);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _IsTrackedDeviceConnected(uint unDeviceIndex);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _GetBoolTrackedDeviceProperty(uint unDeviceIndex, ETrackedDeviceProperty prop, ref ETrackedPropertyError pError);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate float _GetFloatTrackedDeviceProperty(uint unDeviceIndex, ETrackedDeviceProperty prop, ref ETrackedPropertyError pError);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate int _GetInt32TrackedDeviceProperty(uint unDeviceIndex, ETrackedDeviceProperty prop, ref ETrackedPropertyError pError);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate ulong _GetUint64TrackedDeviceProperty(uint unDeviceIndex, ETrackedDeviceProperty prop, ref ETrackedPropertyError pError);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate HmdMatrix34_t _GetMatrix34TrackedDeviceProperty(uint unDeviceIndex, ETrackedDeviceProperty prop, ref ETrackedPropertyError pError);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate uint _GetArrayTrackedDeviceProperty(uint unDeviceIndex, ETrackedDeviceProperty prop, uint propType, IntPtr pBuffer, uint unBufferSize, ref ETrackedPropertyError pError);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate uint _GetStringTrackedDeviceProperty(uint unDeviceIndex, ETrackedDeviceProperty prop, StringBuilder pchValue, uint unBufferSize, ref ETrackedPropertyError pError);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate IntPtr _GetPropErrorNameFromEnum(ETrackedPropertyError error);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _PollNextEvent(ref VREvent_t pEvent, uint uncbVREvent);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _PollNextEventWithPose(ETrackingUniverseOrigin eOrigin, ref VREvent_t pEvent, uint uncbVREvent, ref TrackedDevicePose_t pTrackedDevicePose);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate IntPtr _GetEventTypeNameFromEnum(EVREventType eType);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate HiddenAreaMesh_t _GetHiddenAreaMesh(EVREye eEye, EHiddenAreaMeshType type);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _GetControllerState(uint unControllerDeviceIndex, ref VRControllerState_t pControllerState, uint unControllerStateSize);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _GetControllerStateWithPose(ETrackingUniverseOrigin eOrigin, uint unControllerDeviceIndex, ref VRControllerState_t pControllerState, uint unControllerStateSize, ref TrackedDevicePose_t pTrackedDevicePose);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate void _TriggerHapticPulse(uint unControllerDeviceIndex, uint unAxisId, char usDurationMicroSec);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate IntPtr _GetButtonIdNameFromEnum(EVRButtonId eButtonId);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate IntPtr _GetControllerAxisTypeNameFromEnum(EVRControllerAxisType eAxisType);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _IsInputAvailable();

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _IsSteamVRDrawingControllers();

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _ShouldApplicationPause();

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate bool _ShouldApplicationReduceRenderingWork();

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate uint _DriverDebugRequest(uint unDeviceIndex, string pchRequest, StringBuilder pchResponseBuffer, uint unResponseBufferSize);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate EVRFirmwareError _PerformFirmwareUpdate(uint unDeviceIndex);

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate void _AcknowledgeQuit_Exiting();

		[UnmanagedFunctionPointer(CallingConvention.StdCall)]
		internal delegate void _AcknowledgeQuit_UserPrompt();

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetRecommendedRenderTargetSize GetRecommendedRenderTargetSize;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetProjectionMatrix GetProjectionMatrix;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetProjectionRaw GetProjectionRaw;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _ComputeDistortion ComputeDistortion;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetEyeToHeadTransform GetEyeToHeadTransform;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetTimeSinceLastVsync GetTimeSinceLastVsync;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetD3D9AdapterIndex GetD3D9AdapterIndex;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetDXGIOutputInfo GetDXGIOutputInfo;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetOutputDevice GetOutputDevice;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _IsDisplayOnDesktop IsDisplayOnDesktop;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _SetDisplayVisibility SetDisplayVisibility;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetDeviceToAbsoluteTrackingPose GetDeviceToAbsoluteTrackingPose;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _ResetSeatedZeroPose ResetSeatedZeroPose;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetSeatedZeroPoseToStandingAbsoluteTrackingPose GetSeatedZeroPoseToStandingAbsoluteTrackingPose;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetRawZeroPoseToStandingAbsoluteTrackingPose GetRawZeroPoseToStandingAbsoluteTrackingPose;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetSortedTrackedDeviceIndicesOfClass GetSortedTrackedDeviceIndicesOfClass;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetTrackedDeviceActivityLevel GetTrackedDeviceActivityLevel;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _ApplyTransform ApplyTransform;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetTrackedDeviceIndexForControllerRole GetTrackedDeviceIndexForControllerRole;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetControllerRoleForTrackedDeviceIndex GetControllerRoleForTrackedDeviceIndex;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetTrackedDeviceClass GetTrackedDeviceClass;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _IsTrackedDeviceConnected IsTrackedDeviceConnected;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetBoolTrackedDeviceProperty GetBoolTrackedDeviceProperty;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetFloatTrackedDeviceProperty GetFloatTrackedDeviceProperty;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetInt32TrackedDeviceProperty GetInt32TrackedDeviceProperty;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetUint64TrackedDeviceProperty GetUint64TrackedDeviceProperty;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetMatrix34TrackedDeviceProperty GetMatrix34TrackedDeviceProperty;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetArrayTrackedDeviceProperty GetArrayTrackedDeviceProperty;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetStringTrackedDeviceProperty GetStringTrackedDeviceProperty;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetPropErrorNameFromEnum GetPropErrorNameFromEnum;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _PollNextEvent PollNextEvent;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _PollNextEventWithPose PollNextEventWithPose;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetEventTypeNameFromEnum GetEventTypeNameFromEnum;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetHiddenAreaMesh GetHiddenAreaMesh;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetControllerState GetControllerState;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetControllerStateWithPose GetControllerStateWithPose;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _TriggerHapticPulse TriggerHapticPulse;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetButtonIdNameFromEnum GetButtonIdNameFromEnum;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _GetControllerAxisTypeNameFromEnum GetControllerAxisTypeNameFromEnum;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _IsInputAvailable IsInputAvailable;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _IsSteamVRDrawingControllers IsSteamVRDrawingControllers;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _ShouldApplicationPause ShouldApplicationPause;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _ShouldApplicationReduceRenderingWork ShouldApplicationReduceRenderingWork;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _DriverDebugRequest DriverDebugRequest;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _PerformFirmwareUpdate PerformFirmwareUpdate;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _AcknowledgeQuit_Exiting AcknowledgeQuit_Exiting;

		[MarshalAs(UnmanagedType.FunctionPtr)]
		internal _AcknowledgeQuit_UserPrompt AcknowledgeQuit_UserPrompt;
	}
}