Version: 20 Mar 2024

ml_input.h

Classes

	Name
struct	MLInputControllerTouchpadGesture
struct	MLInputControllerCallbacksEx A structure containing callbacks for input controller events.
struct	MLInputControllerState A structure containing information about the current state of an input controller.
struct	MLInputControllerStateEx A structure containing information about the current state of an input controller.
struct	MLInputConnectedDevicesList A structure containing information about the connected devices.
struct	MLInputPreDefinedPattern A structure containing information about the Pre-Defined pattern to be played.
struct	MLInputBuzzCommand A structure containing information about the Buzz command to be played.
struct	MLInputCustomHaptics A structure containing information about the Buzz command and/or pre-defined pattern to be played.
struct	MLInputCustomHapticsInfo A structure containing a list of Buzz command and/or pre-defined patterns to be played.
union	MLInputCustomHaptics.MLInputCustomHapticsPattern

Types

	Name
typedef struct MLInputControllerTouchpadGesture	MLInputControllerTouchpadGesture
typedef struct MLInputControllerCallbacksEx	MLInputControllerCallbacksEx A structure containing callbacks for input controller events.
typedef struct MLInputControllerState	MLInputControllerState A structure containing information about the current state of an input controller.
typedef struct MLInputControllerStateEx	MLInputControllerStateEx A structure containing information about the current state of an input controller.
typedef struct MLInputConnectedDevicesList	MLInputConnectedDevicesList A structure containing information about the connected devices.
typedef struct MLInputPreDefinedPattern	MLInputPreDefinedPattern A structure containing information about the Pre-Defined pattern to be played.
typedef struct MLInputBuzzCommand	MLInputBuzzCommand A structure containing information about the Buzz command to be played.
typedef struct MLInputCustomHaptics	MLInputCustomHaptics A structure containing information about the Buzz command and/or pre-defined pattern to be played.
typedef struct MLInputCustomHapticsInfo	MLInputCustomHapticsInfo A structure containing a list of Buzz command and/or pre-defined patterns to be played.

Enums

	Name
enum	Anonymous Enum 13 { MLResultAPIPrefix_Input = ( 0x21DC << 16) }
enum	MLInputResult { MLInputResult_ServiceNotAvailable = MLResultAPIPrefix_Input, MLInputResult_PermissionDenied, MLInputResult_DeviceNotFound, MLInputResult_IllegalState, MLInputResult_InternalError, MLInputResult_SpeechDisabled, MLInputResult_Ensure32Bits = 0x7FFFFFFF } Return values for Input API calls.
enum	Anonymous Enum 14 { MLInput_MaxControllers = 1, MLInput_MaxControllerTouchpadTouches = 2 }
enum	MLInputControllerTouchpadGestureState { MLInputControllerTouchpadGestureState_End, MLInputControllerTouchpadGestureState_Continue, MLInputControllerTouchpadGestureState_Start, MLInputControllerTouchpadGestureState_Ensure32Bits = 0x7FFFFFFF }
enum	MLInputControllerTouchpadGestureType { MLInputControllerTouchpadGestureType_None, MLInputControllerTouchpadGestureType_Tap, MLInputControllerTouchpadGestureType_ForceTapDown, MLInputControllerTouchpadGestureType_ForceTapUp, MLInputControllerTouchpadGestureType_ForceDwell, MLInputControllerTouchpadGestureType_SecondForceDown, MLInputControllerTouchpadGestureType_RadialScroll, MLInputControllerTouchpadGestureType_Swipe, MLInputControllerTouchpadGestureType_Count, MLInputControllerTouchpadGestureType_Ensure32Bits = 0x7FFFFFFF }
enum	MLInputControllerTouchpadGestureDirection { MLInputControllerTouchpadGestureDirection_None, MLInputControllerTouchpadGestureDirection_Up, MLInputControllerTouchpadGestureDirection_Down, MLInputControllerTouchpadGestureDirection_Left, MLInputControllerTouchpadGestureDirection_Right, MLInputControllerTouchpadGestureDirection_Clockwise, MLInputControllerTouchpadGestureDirection_CounterClockwise, MLInputControllerTouchpadGestureDirection_Count, MLInputControllerTouchpadGestureDirection_Ensure32Bits = 0x7FFFFFFF }
enum	MLInputControllerType { MLInputControllerType_None, MLInputControllerType_Device, MLInputControllerType_Ensure32Bits = 0x7FFFFFFF }
enum	MLInputControllerButton { MLInputControllerButton_None, MLInputControllerButton_Bumper, MLInputControllerButton_Menu, MLInputControllerButton_Count, MLInputControllerButton_Ensure32Bits = 0x7FFFFFFF }
enum	MLInputControllerTriggerEvent { MLInputControllerTriggerEvent_Pull, MLInputControllerTriggerEvent_Release, MLInputControllerTriggerEvent_Click, MLInputControllerTriggerEvent_Hold, MLInputControllerTriggerEvent_Ensure32Bits = 0x7FFFFFFF }
enum	MLInputPreDefinedPatternType { MLInputPreDefinedPatternType_A = 0, MLInputPreDefinedPatternType_B = 1, MLInputPreDefinedPatternType_C = 2, MLInputPreDefinedPatternType_Ensure32Bits = 0x7FFFFFFF }
enum	MLInputCustomHapticsType { MLInputCustomHapticsType_None = 0, MLInputCustomHapticsType_Buzz = 1, MLInputCustomHapticsType_Predefined = 2, MLInputCustomHapticsType_Ensure32Bits = 0x7FFFFFFF }
enum	MLInputControllerHand { MLInputControllerHand_None = 0, MLInputControllerHand_Left = 1, MLInputControllerHand_Right = 2, MLInputControllerHand_Both = 3, MLInputControllerHand_Ensure32Bits = 0x7FFFFFFF } Hand in which the controller is held.

Functions

	Name
void	MLInputControllerCallbacksExInit(MLInputControllerCallbacksEx * inout_callbacks) Initializes default values for MLInputControllerCallbacksEx.
void	MLInputControllerStateExInit(MLInputControllerStateEx inout_attr[MLInput_MaxControllers]) Initializes values for MLInputControllerStateEx.
void	MLInputConnectedDevicesListInit(MLInputConnectedDevicesList * inout_devices_list) Initializes default values for MLInputConnectedDevicesList.
void	MLInputPreDefinedPatternInit(MLInputPreDefinedPattern * inout_pattern) Initializes default values for MLInputPreDefinedPattern.
void	MLInputBuzzCommandInit(MLInputBuzzCommand * inout_command) Initializes default values for MLInputBuzzCommand.
void	MLInputCustomHapticsInfoInit(MLInputCustomHapticsInfo * inout_info) Initializes an array of MLInputCustomHaptics with default values.
const char *	MLInputGetResultString(MLResult result) Returns an ASCII string for MLInputsResult and MLResult codes.
MLResult	MLInputCreate(MLHandle * out_handle) Creates an input tracker.
MLResult	MLInputSetControllerCallbacksEx(MLHandle handle, const MLInputControllerCallbacksEx controller_callbacks, void user_data) Sets the callbacks for controller input events.
MLResult	MLInputGetControllerState(MLHandle handle, struct MLInputControllerState out_state[MLInput_MaxControllers]) Returns current state of all possible input controllers.
MLResult	MLInputGetControllerStateEx(MLHandle handle, MLInputControllerStateEx out_state[MLInput_MaxControllers]) Returns current state of all possible input controllers.
MLResult	MLInputGetConnectedDevices(MLHandle handle, MLInputConnectedDevicesList * inout_devices) Gets the device IDs of all connected devices.
MLResult	MLInputReleaseConnectedDevicesList(MLHandle handle, MLInputConnectedDevicesList * devices) Releases the contents of MLInputConnectedDevicesList populated by MLInputGetConnectedDevices.
MLResult	MLInputStartControllerFeedbackPreDefinedPattern(MLHandle handle, uint8_t controller_id, MLInputPreDefinedPattern * pattern) Plays the pre-defined pattern.
MLResult	MLInputStartControllerFeedbackBuzzCommand(MLHandle handle, uint8_t controller_id, const MLInputBuzzCommand * command) Plays controller haptic buzz command.
MLResult	MLInputCreateCustomHapticsPattern(MLHandle handle, MLInputCustomHapticsInfo info, uint32_t inout_pattern_id) Creates a custom haptic pattern.
MLResult	MLInputStartControllerFeedbackCustomHapticsPattern(MLHandle handle, uint8_t controller_id, uint32_t pattern_id) Plays the custom haptic pattern created by MLInputCreateCustomHapticsPattern.
MLResult	MLInputDeleteCustomHapticsPattern(MLHandle handle, uint32_t pattern_id) Deletes the custom haptic pattern created by MLInputCreateCustomHapticsPattern.
MLResult	MLInputStopControllerFeedback(MLHandle handle, uint8_t controller_id) Stops the currently playing haptic pattern.
MLResult	MLInputDestroy(MLHandle handle) Destroys an input tracker.

Enums Documentation

Anonymous Enum 13

Enumerator	Value	Description
MLResultAPIPrefix_Input	( 0x21DC << 16)	Defines the prefix for MLInputResult codes.

MLInputResult

Enumerator	Value	Description
MLInputResult_ServiceNotAvailable	MLResultAPIPrefix_Input
MLInputResult_PermissionDenied		Operation failed because a required permission has not been granted. Example: This can happen when the app is not in the foreground.
MLInputResult_DeviceNotFound		Operation failed because a required device was not found.
MLInputResult_IllegalState		Operation failed because the service was in an illegal state. Example: This can occur when the service is still initializing.
MLInputResult_InternalError		Operation failed because of an internal error.
MLInputResult_SpeechDisabled		Operation failed because a required speech feature is disabled in system settings.
MLInputResult_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Return values for Input API calls.

Anonymous Enum 14

Enumerator	Value	Description
MLInput_MaxControllers	1	Maximum recognized number of input controllers.
MLInput_MaxControllerTouchpadTouches	2	Maximum recognized number of controller touchpad touches.

MLInputControllerTouchpadGestureState

Enumerator	Value	Description
MLInputControllerTouchpadGestureState_End		End(Default).
MLInputControllerTouchpadGestureState_Continue		Continue.
MLInputControllerTouchpadGestureState_Start		Start.
MLInputControllerTouchpadGestureState_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Touchpad gesture state.

MLInputControllerTouchpadGestureType

Enumerator	Value	Description
MLInputControllerTouchpadGestureType_None		None.
MLInputControllerTouchpadGestureType_Tap		Tap. This is a discrete gesture.
MLInputControllerTouchpadGestureType_ForceTapDown		Force tap down. This is a discrete gesture.
MLInputControllerTouchpadGestureType_ForceTapUp		Force tap up. This is a discrete gesture.
MLInputControllerTouchpadGestureType_ForceDwell		Force dwell. This is a discrete gesture.
MLInputControllerTouchpadGestureType_SecondForceDown		Second force down. This is a discrete gesture.
MLInputControllerTouchpadGestureType_RadialScroll		Radial scroll. This is a continuous gesture.
MLInputControllerTouchpadGestureType_Swipe		Swipe. This is a continuous gesture.
MLInputControllerTouchpadGestureType_Count		Number of gesture types.
MLInputControllerTouchpadGestureType_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Recognized touchpad gesture types.

MLInputControllerTouchpadGestureDirection

Enumerator	Value	Description
MLInputControllerTouchpadGestureDirection_None		None.
MLInputControllerTouchpadGestureDirection_Up		Up.
MLInputControllerTouchpadGestureDirection_Down		Down.
MLInputControllerTouchpadGestureDirection_Left		Left.
MLInputControllerTouchpadGestureDirection_Right		Right.
MLInputControllerTouchpadGestureDirection_Clockwise		Clockwise.
MLInputControllerTouchpadGestureDirection_CounterClockwise		Counter clockwise.
MLInputControllerTouchpadGestureDirection_Count		Number of directions.
MLInputControllerTouchpadGestureDirection_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Direction of touchpad gesture.

MLInputControllerType

Enumerator	Value	Description
MLInputControllerType_None		None.
MLInputControllerType_Device		Device.
MLInputControllerType_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Types of input controllers recognized by Magic Leap platform.

MLInputControllerButton

Enumerator	Value	Description
MLInputControllerButton_None
MLInputControllerButton_Bumper		Bumper.
MLInputControllerButton_Menu		Menu.
MLInputControllerButton_Count		Number of buttons.
MLInputControllerButton_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Buttons on input controllers.

MLInputControllerTriggerEvent

Enumerator	Value	Description
MLInputControllerTriggerEvent_Pull		This is used when trigger is pulled down, and the normalized value is > 0.
MLInputControllerTriggerEvent_Release		This is used when trigger is fully released, and the normalized value is 0.
MLInputControllerTriggerEvent_Click		This is used when trigger is pulled and released within a short duration.
MLInputControllerTriggerEvent_Hold		This is used when trigger is pulled and held for a longer duration.
MLInputControllerTriggerEvent_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Trigger events types.

MLInputPreDefinedPatternType

Enumerator	Value	Description
MLInputPreDefinedPatternType_A	0	Pre-defined pattern used for VKB hover.
MLInputPreDefinedPatternType_B	1	Pre-Defined pattern used for VKB select.
MLInputPreDefinedPatternType_C	2	Pre-Defined pattern used for homemenu hover.
MLInputPreDefinedPatternType_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Custom haptics pattern types.

MLInputCustomHapticsType

Enumerator	Value	Description
MLInputCustomHapticsType_None	0	None.
MLInputCustomHapticsType_Buzz	1	Pattern is a buzz command.
MLInputCustomHapticsType_Predefined	2	Pattern is a pre-defined pattern.
MLInputCustomHapticsType_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Custom haptics pattern types.

MLInputControllerHand

Enumerator	Value	Description
MLInputControllerHand_None	0	None.
MLInputControllerHand_Left	1	Left hand.
MLInputControllerHand_Right	2	Right hand.
MLInputControllerHand_Both	3	Both hand.
MLInputControllerHand_Ensure32Bits	0x7FFFFFFF	Ensure enum is represented as 32 bits.

Hand in which the controller is held.

API Level:

Types Documentation

MLInputControllerTouchpadGesture

typedef struct MLInputControllerTouchpadGesture MLInputControllerTouchpadGesture;

A structure containing information about recognized touchpad gesture.

More Info

MLInputControllerCallbacksEx

typedef struct MLInputControllerCallbacksEx MLInputControllerCallbacksEx;

A structure containing callbacks for input controller events.

The final parameter to all the callbacks is a void *, which will point to whatever payload data the user provides in MLInputSetControllerCallbacksEx. Individual callbacks which are not required by the client can be NULL.

This structure must be initialized by calling MLInputControllerCallbacksExInit() before use.

More Info

API Level:

MLInputControllerState

typedef struct MLInputControllerState MLInputControllerState;

A structure containing information about the current state of an input controller.

More Info

Deprecated

Deprecated since 1.1.0. Scheduled for removal.

MLInputControllerStateEx

typedef struct MLInputControllerStateEx MLInputControllerStateEx;

A structure containing information about the current state of an input controller.

More Info

API Level:

MLInputConnectedDevicesList

typedef struct MLInputConnectedDevicesList MLInputConnectedDevicesList;

A structure containing information about the connected devices.

More Info

API Level:

MLInputPreDefinedPattern

typedef struct MLInputPreDefinedPattern MLInputPreDefinedPattern;

A structure containing information about the Pre-Defined pattern to be played.

When playing haptic pre-defined pattern, needed information is stored in this structure.

More Info

API Level:

MLInputBuzzCommand

typedef struct MLInputBuzzCommand MLInputBuzzCommand;

A structure containing information about the Buzz command to be played.

When playing haptic buzz command, needed information is stored in this structure.

More Info

API Level:

MLInputCustomHaptics

typedef struct MLInputCustomHaptics MLInputCustomHaptics;

A structure containing information about the Buzz command and/or pre-defined pattern to be played.

A custom haptics pattern can be played by combining Buzz haptic command and/or a pre-defined pattern, this structure will hold info of a pattern to be added to the custom haptics array. A MLInputCustomHapticsType should be set while initializing the struct to indicate whether the to-be set pattern is a buzz command or a pre-defined pattern.

The #duration will set the time for which a pattern is played:

If the inherited duration of a pre-defined pattern is greater, then it will be cut short and the next pattern will start playing.
If the inherited duration of a pre-defined pattern is smaller, then it will not repeat itself and will wait for the #duration to complete before starting to play the next pattern.
Buzz command's duration will supersede the #duration. Above caveat is true in case buzz command's duration is smaller.
The last pattern of the array will continue playing even if the inherited duration is longer than #duration unless the pattern is interrupted by another pattern in the pipeline.

More Info

MLInputCustomHapticsInfo

typedef struct MLInputCustomHapticsInfo MLInputCustomHapticsInfo;

A structure containing a list of Buzz command and/or pre-defined patterns to be played.

A custom haptics pattern can be played by combining Buzz haptic command and/or a pre-defined pattern, this structure holds a list of such a combination.

More Info

API Level:

Functions Documentation

MLInputControllerCallbacksExInit

static inline void MLInputControllerCallbacksExInit(
    MLInputControllerCallbacksEx * inout_callbacks
)

Initializes default values for MLInputControllerCallbacksEx.

Parameters


MLInputControllerCallbacksEx *	inout_callbacks	The object to initialize with default settings.

API Level:

MLInputControllerStateExInit

static inline void MLInputControllerStateExInit(
    MLInputControllerStateEx inout_attr[MLInput_MaxControllers]
)

Initializes values for MLInputControllerStateEx.

Parameters


MLInputControllerStateEx	inout_attr	The object to initialize.

API Level:

MLInputConnectedDevicesListInit

static inline void MLInputConnectedDevicesListInit(
    MLInputConnectedDevicesList * inout_devices_list
)

Initializes default values for MLInputConnectedDevicesList.

Parameters


MLInputConnectedDevicesList *	inout_devices_list	The object to initialize with default settings.

API Level:

MLInputPreDefinedPatternInit

static inline void MLInputPreDefinedPatternInit(
    MLInputPreDefinedPattern * inout_pattern
)

Initializes default values for MLInputPreDefinedPattern.

Parameters


MLInputPreDefinedPattern *	inout_pattern	The object to initialize with default settings.

MLInputBuzzCommandInit

static inline void MLInputBuzzCommandInit(
    MLInputBuzzCommand * inout_command
)

Initializes default values for MLInputBuzzCommand.

Parameters


MLInputBuzzCommand *	inout_command	The object to initialize with default settings.

MLInputCustomHapticsInfoInit

static inline void MLInputCustomHapticsInfoInit(
    MLInputCustomHapticsInfo * inout_info
)

Initializes an array of MLInputCustomHaptics with default values.

Parameters


MLInputCustomHapticsInfo *	inout_info	The object to MLInputCustomHapticsInfo struct to initialize the array elements with default settings.

MLInputGetResultString

const char * MLInputGetResultString(
    MLResult result
)

Returns an ASCII string for MLInputsResult and MLResult codes.

Parameters


MLResult	result	The input MLResult enum from MLInput functions.

Required Permissions:

None

Return: ASCII string containing readable version of result code.

API Level:

MLInputCreate

MLResult MLInputCreate(
    MLHandle * out_handle
)

Creates an input tracker.

Parameters


MLHandle *	out_handle	A handle to the created input tracker. Only valid if the return value is MLResult_Ok.

Returns


MLResult	MLResult_InvalidParam	Failed to create the input tracker to an invalid input parameter.
MLResult	MLResult_Ok	Successfully created the input tracker.
MLResult	MLResult_UnspecifiedFailure	Failed to create the input tracker due to an unknown error.
MLResult	MLInputResult_IllegalState	Failed to create the input tracker due to an unexpected state.

Required Permissions:

None

API Level:

MLInputSetControllerCallbacksEx

MLResult MLInputSetControllerCallbacksEx(
    MLHandle handle,
    const MLInputControllerCallbacksEx * controller_callbacks,
    void * user_data
)

Sets the callbacks for controller input events.

Parameters


MLHandle	handle	Handle to the input tracker.
const MLInputControllerCallbacksEx *	controller_callbacks	Pointer to MLInputControllerCallbacksEx structure (can be NULL).
void *	user_data	Pointer to user payload data; this will be the first argument passed to all the callback functions (can be NULL).

Returns


MLResult	MLResult_InvalidParam	Failed to set the callback for controller input events due to an invalid input parameter.
MLResult	MLResult_Ok	Successfully set the callback for controller input events.
MLResult	MLResult_UnspecifiedFailure	Failed to set the callback for the controller input events due to an unknown error.

Required Permissions:

None

API Level:

MLInputGetControllerState

MLResult MLInputGetControllerState(
    MLHandle handle,
    struct MLInputControllerState out_state[MLInput_MaxControllers]
)

Returns current state of all possible input controllers.

Parameters


MLHandle	handle	Handle to the input tracker.
struct MLInputControllerState	out_state	Array of MLInputControllerState structures that will be populated. The size of this array is at least the size MLInput_MaxControllers.

Returns


MLResult	MLResult_InvalidParam	Failed to fetch the controller state due to an invalid input parameter.
MLResult	MLResult_Ok	Successfully fetched the controller state.
MLResult	MLResult_UnspecifiedFailure	Failed to fetch the controller state due to an unknown error.

Required Permissions:

None

Deprecated

Deprecated since 1.1.0. Scheduled for removal.

MLInputGetControllerStateEx

MLResult MLInputGetControllerStateEx(
    MLHandle handle,
    MLInputControllerStateEx out_state[MLInput_MaxControllers]
)

Returns current state of all possible input controllers.

Parameters


MLHandle	handle	Handle to the input tracker.
MLInputControllerStateEx	out_state	Array of MLInputControllerStateEx structures that will be populated. The size of this array is at least the size MLInput_MaxControllers.

Returns


MLResult	MLResult_InvalidParam	Failed to fetch the controller state due to an invalid input parameter.
MLResult	MLResult_Ok	Successfully fetched the controller state.
MLResult	MLResult_UnspecifiedFailure	Failed to fetch the controller state due to an unknown error.

Required Permissions:

None

API Level:

MLInputGetConnectedDevices

MLResult MLInputGetConnectedDevices(
    MLHandle handle,
    MLInputConnectedDevicesList * inout_devices
)

Gets the device IDs of all connected devices.

Parameters


MLHandle	handle	Handle to the input tracker.
MLInputConnectedDevicesList *	inout_devices	Pointer to MLInputConnectedDevicesList structure that will be populated. The app should call MLInputReleaseConnectedDevicesList to release the contents after use.

Returns


MLResult	MLResult_InvalidParam	Failed to get the IDs of all connected devices due to an invalid input parameter.
MLResult	MLResult_Ok	Successfully fetched the IDs of the connected devices.
MLResult	MLResult_UnspecifiedFailure	Failed to get the IDs of all connected devices due to an unknown error.

Required Permissions:

None

API Level:

MLInputReleaseConnectedDevicesList

MLResult MLInputReleaseConnectedDevicesList(
    MLHandle handle,
    MLInputConnectedDevicesList * devices
)

Releases the contents of MLInputConnectedDevicesList populated by MLInputGetConnectedDevices.

Parameters


MLHandle	handle	Handle to the input tracker.
MLInputConnectedDevicesList *	devices	Pointer to MLInputConnectedDevicesList struct. Its contents will be released.

Returns


MLResult	MLResult_Ok	Successfully released the contents of the device list.
MLResult	MLResult_InvalidParam	Failed to release the contents of the device list due to an invalid input parameter.
MLResult	MLResult_UnspecifiedFailure	Failed to release the contents of the device list due to an unknown error.

Required Permissions:

None

API Level:

MLInputStartControllerFeedbackPreDefinedPattern

MLResult MLInputStartControllerFeedbackPreDefinedPattern(
    MLHandle handle,
    uint8_t controller_id,
    MLInputPreDefinedPattern * pattern
)

Plays the pre-defined pattern.

Parameters


MLHandle	handle	Handle to the input tracker.
uint8_t	controller_id	Id of the input controller 0 ~ MLInput_MaxControllers.
MLInputPreDefinedPattern *	pattern	A pointer to #MLInputPredefinedPattern structure (can be NULL).

Returns


MLResult	MLInputResult_IllegalState	The service is either not initialized or terminated or the app is not in focus.
MLResult	MLResult_DeviceNotFound	The haptic device could not be found.
MLResult	MLResult_InvalidParam	Failed to start a pre-defined pattern due to an invalid input parameter.
MLResult	MLResult_Ok	Successfully started a pre-defined pattern on the specified controller.
MLResult	MLResult_UnspecifiedFailure	Failed to start a pre-defined pattern due to an unknown error.

Required Permissions:

None

API Level:

MLInputStartControllerFeedbackBuzzCommand

MLResult MLInputStartControllerFeedbackBuzzCommand(
    MLHandle handle,
    uint8_t controller_id,
    const MLInputBuzzCommand * command
)

Plays controller haptic buzz command.

Parameters


MLHandle	handle	Handle to the input tracker.
uint8_t	controller_id	Id of the input controller 0 ~ MLInput_MaxControllers.
const MLInputBuzzCommand *	command	A pointer to MLInputBuzzCommand structure (can be NULL).

Returns


MLResult	MLInputResult_IllegalState	The service is either not initialized or terminated or the app is not in focus.
MLResult	MLResult_DeviceNotFound	The haptic device could not be found.
MLResult	MLResult_InvalidParam	Failed to start the buzz command due to an invalid input parameter.
MLResult	MLResult_Ok	Successfully started the buzz command on the specified controller.
MLResult	MLResult_UnspecifiedFailure	Failed to start the buzz command due to an unknown error.

Required Permissions:

None

API Level:

MLInputCreateCustomHapticsPattern

MLResult MLInputCreateCustomHapticsPattern(
    MLHandle handle,
    MLInputCustomHapticsInfo * info,
    uint32_t * inout_pattern_id
)

Creates a custom haptic pattern.

Parameters


MLHandle	handle	Handle to the input tracker.
MLInputCustomHapticsInfo *	info	Pointer to MLInputCustomHapticsInfo struct.
uint32_t *	inout_pattern_id	A pattern Id created by the API, to be used by MLInputStartControllerFeedbackCustomHapticsPattern.

Returns


MLResult	MLInputResult_IllegalState	The service is either not initialized or terminated.
MLResult	MLResult_InvalidParam	Failed to create a custom haptic pattern due to an invalid input parameter.
MLResult	MLResult_Ok	Successfully created a custom haptic pattern.
MLResult	MLResult_UnspecifiedFailure	Failed to create a custom haptic pattern due to an unknown error.

Required Permissions:

None

A custom haptics pattern is defined as a set of either buzz command and/or pre-defined patterns. Each pattern is played for a duration defined as the #duration_ms member of each element of the MLInputCustomHaptics array.

API Level:

MLInputStartControllerFeedbackCustomHapticsPattern

MLResult MLInputStartControllerFeedbackCustomHapticsPattern(
    MLHandle handle,
    uint8_t controller_id,
    uint32_t pattern_id
)

Plays the custom haptic pattern created by MLInputCreateCustomHapticsPattern.

Parameters


MLHandle	handle	Handle to the input tracker.
uint8_t	controller_id	Id of the input controller 0 ~ MLInput_MaxControllers.
uint32_t	pattern_id	Custom pattern id created by MLInputCreateCustomHapticsPattern.

Returns


MLResult	MLInputResult_IllegalState	The service is either not initialized or terminated or the app is not in focus.
MLResult	MLResult_DeviceNotFound	The haptic device could not be found.
MLResult	MLResult_InvalidParam	Failed to start the custom haptic pattern due to an invalid input parameter.
MLResult	MLResult_Ok	Successfully started the custom haptic pattern on the specified controller.
MLResult	MLResult_UnspecifiedFailure	Failed to start the custom haptic pattern due to an unknown error.

Required Permissions:

None

API Level:

MLInputDeleteCustomHapticsPattern

MLResult MLInputDeleteCustomHapticsPattern(
    MLHandle handle,
    uint32_t pattern_id
)

Deletes the custom haptic pattern created by MLInputCreateCustomHapticsPattern.

Parameters


MLHandle	handle	Handle to the input tracker.
uint32_t	pattern_id	Custom pattern Id created by MLInputCreateCustomHapticsPattern.

Returns


MLResult	MLInputResult_IllegalState	The service is either not initialized or terminated.
MLResult	MLResult_InvalidParam	Failed to destroy the custom haptic pattern due to an invalid input parameter.
MLResult	MLResult_Ok	Successfully destroyed the custom haptic pattern on the specified controller.
MLResult	MLResult_UnspecifiedFailure	Failed to destroy the custom haptic pattern due to an unknown error.

Required Permissions:

None

API Level:

MLInputStopControllerFeedback

MLResult MLInputStopControllerFeedback(
    MLHandle handle,
    uint8_t controller_id
)

Stops the currently playing haptic pattern.

Parameters


MLHandle	handle	Handle to the input tracker.
uint8_t	controller_id	Id of the input controller 0 ~ MLInput_MaxControllers.

Returns


MLResult	MLInputResult_IllegalState	The service is either not initialized or terminated or the app is not in focus.
MLResult	MLResult_DeviceNotFound	The haptic device could not be found.
MLResult	MLResult_InvalidParam	Failed to stop the pattern due to an invalid input parameter.
MLResult	MLResult_Ok	Successfully stopped the pattern on the specified controller.
MLResult	MLResult_UnspecifiedFailure	Failed to stop the pattern due to an unknown error.

Required Permissions:

None

API Level:

MLInputDestroy

MLResult MLInputDestroy(
    MLHandle handle
)

Destroys an input tracker.

Parameters


MLHandle	handle	MLHandle to the input tracker to destroy.

Returns


MLResult	MLResult_InvalidParam	Failed to destroy the input tracker due to an invalid input parameter.
MLResult	MLResult_Ok	Successfully destroyed the input tracker.
MLResult	MLResult_UnspecifiedFailure	Failed to destroy the input handler due to an unknown error.
MLResult	MLInputResult_IllegalState	Failed to destroy the input handler due to an unexpected state.

Required Permissions:

None

Source code

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// Copyright (c) 2017 Magic Leap, Inc. All Rights Reserved.
// Use of this file is governed by the Software License Agreement,
// located here: https://www.magicleap.com/software-license-agreement-ml2
// Terms and conditions applicable to third-party materials accompanying
// this distribution may also be found in the top-level NOTICE file
// appearing herein.
// %COPYRIGHT_END%
// ---------------------------------------------------------------------
// %BANNER_END%
#pragma once
#include "ml_api.h"
#include "ml_types.h"

ML_EXTERN_C_BEGIN
enum {
  MLResultAPIPrefix_Input = MLRESULT_PREFIX(0x21DC)
};

typedef enum MLInputResult {
  MLInputResult_ServiceNotAvailable = MLResultAPIPrefix_Input,
  MLInputResult_PermissionDenied,
  MLInputResult_DeviceNotFound,
  MLInputResult_IllegalState,
  MLInputResult_InternalError,
  MLInputResult_SpeechDisabled,
  MLInputResult_Ensure32Bits = 0x7FFFFFFF
} MLInputResult;

enum {
  MLInput_MaxControllers = 1,
  MLInput_MaxControllerTouchpadTouches = 2
};

typedef enum MLInputControllerTouchpadGestureState {
  MLInputControllerTouchpadGestureState_End,
  MLInputControllerTouchpadGestureState_Continue,
  MLInputControllerTouchpadGestureState_Start,
  MLInputControllerTouchpadGestureState_Ensure32Bits = 0x7FFFFFFF
} MLInputControllerTouchpadGestureState;

typedef enum MLInputControllerTouchpadGestureType {
  MLInputControllerTouchpadGestureType_None,
  MLInputControllerTouchpadGestureType_Tap,
  MLInputControllerTouchpadGestureType_ForceTapDown,
  MLInputControllerTouchpadGestureType_ForceTapUp,
  MLInputControllerTouchpadGestureType_ForceDwell,
  MLInputControllerTouchpadGestureType_SecondForceDown,
  MLInputControllerTouchpadGestureType_RadialScroll,
  MLInputControllerTouchpadGestureType_Swipe,
  MLInputControllerTouchpadGestureType_Count,
  MLInputControllerTouchpadGestureType_Ensure32Bits = 0x7FFFFFFF
} MLInputControllerTouchpadGestureType;

typedef enum MLInputControllerTouchpadGestureDirection {
  MLInputControllerTouchpadGestureDirection_None,
  MLInputControllerTouchpadGestureDirection_Up,
  MLInputControllerTouchpadGestureDirection_Down,
  MLInputControllerTouchpadGestureDirection_Left,
  MLInputControllerTouchpadGestureDirection_Right,
  MLInputControllerTouchpadGestureDirection_Clockwise,
  MLInputControllerTouchpadGestureDirection_CounterClockwise,
  MLInputControllerTouchpadGestureDirection_Count,
  MLInputControllerTouchpadGestureDirection_Ensure32Bits = 0x7FFFFFFF
} MLInputControllerTouchpadGestureDirection;

typedef struct MLInputControllerTouchpadGesture {
  MLVec3f pos_and_force;
  MLInputControllerTouchpadGestureType type;
  MLInputControllerTouchpadGestureDirection direction;
  float speed;
  float distance;
  float radius;
  float angle;
} MLInputControllerTouchpadGesture;

typedef enum MLInputControllerType {
  MLInputControllerType_None,
  MLInputControllerType_Device,
  MLInputControllerType_Ensure32Bits = 0x7FFFFFFF
} MLInputControllerType;

typedef enum MLInputControllerButton {
  MLInputControllerButton_None,
  MLInputControllerButton_Bumper,
  MLInputControllerButton_Menu,
  MLInputControllerButton_Count,
  MLInputControllerButton_Ensure32Bits = 0x7FFFFFFF
} MLInputControllerButton;

typedef enum MLInputControllerTriggerEvent {
  MLInputControllerTriggerEvent_Pull,
  MLInputControllerTriggerEvent_Release,
  MLInputControllerTriggerEvent_Click,
  MLInputControllerTriggerEvent_Hold,
  MLInputControllerTriggerEvent_Ensure32Bits = 0x7FFFFFFF
} MLInputControllerTriggerEvent;

typedef enum MLInputPreDefinedPatternType {
  MLInputPreDefinedPatternType_A = 0,
  MLInputPreDefinedPatternType_B = 1,
  MLInputPreDefinedPatternType_C = 2,
  MLInputPreDefinedPatternType_Ensure32Bits = 0x7FFFFFFF
} MLInputPreDefinedPatternType;

typedef enum MLInputCustomHapticsType {
  MLInputCustomHapticsType_None = 0,
  MLInputCustomHapticsType_Buzz = 1,
  MLInputCustomHapticsType_Predefined = 2,
  MLInputCustomHapticsType_Ensure32Bits = 0x7FFFFFFF
} MLInputCustomHapticsType;

typedef enum MLInputControllerHand {
  MLInputControllerHand_None = 0,
  MLInputControllerHand_Left = 1,
  MLInputControllerHand_Right = 2,
  MLInputControllerHand_Both = 3,
  MLInputControllerHand_Ensure32Bits = 0x7FFFFFFF
} MLInputControllerHand;

typedef struct MLInputControllerCallbacksEx {
  uint32_t version;
  void (*on_touchpad_gesture)(uint8_t controller_id, const MLInputControllerTouchpadGesture *touchpad_gesture, void *data);
  void (*on_touchpad_gesture_continue)(uint8_t controller_id, const MLInputControllerTouchpadGesture *touchpad_gesture, void *data);
  void (*on_touchpad_gesture_end)(uint8_t controller_id, const MLInputControllerTouchpadGesture *touchpad_gesture, void *data);
  void (*on_button_down)(uint8_t controller_id, MLInputControllerButton button, void *data);
  void (*on_button_up)(uint8_t controller_id, MLInputControllerButton button, void *data);
  void (*on_button_click)(uint8_t controller_id, MLInputControllerButton button, void *data);
  void (*on_trigger)(uint8_t controller_id, MLInputControllerTriggerEvent event, float depth, void *data);
  void (*on_connect)(uint8_t controller_id, void *data);
  void (*on_disconnect)(uint8_t controller_id, void *data);
} MLInputControllerCallbacksEx;

ML_STATIC_INLINE void MLInputControllerCallbacksExInit(MLInputControllerCallbacksEx *inout_callbacks) {
  if (inout_callbacks) {
    inout_callbacks->version = 3u;
    inout_callbacks->on_touchpad_gesture = NULL;
    inout_callbacks->on_touchpad_gesture_continue = NULL;
    inout_callbacks->on_touchpad_gesture_end = NULL;
    inout_callbacks->on_button_down = NULL;
    inout_callbacks->on_button_up = NULL;
    inout_callbacks->on_button_click = NULL;
    inout_callbacks->on_trigger = NULL;
    inout_callbacks->on_connect = NULL;
    inout_callbacks->on_disconnect = NULL;
  }
}

typedef ML_DEPRECATED_MSG("Replaced by MLInputControllerStateEx.") struct MLInputControllerState {
  MLVec3f touch_pos_and_force[MLInput_MaxControllerTouchpadTouches];
  float trigger_normalized;
  bool button_state[MLInputControllerButton_Count];
  bool is_touch_active[MLInput_MaxControllerTouchpadTouches];
  bool is_connected;
  MLInputControllerTouchpadGesture touchpad_gesture;
  MLInputControllerTouchpadGestureState touchpad_gesture_state;
  MLInputControllerType type;
  uint8_t hardware_index;
} MLInputControllerState;

typedef struct MLInputControllerStateEx {
  uint32_t version;
  MLInputControllerType type;
  MLInputControllerHand hand;
  MLVec3f touch_pos_and_force[MLInput_MaxControllerTouchpadTouches];
  float trigger_normalized;
  bool button_state[MLInputControllerButton_Count];
  bool is_touch_active[MLInput_MaxControllerTouchpadTouches];
  bool is_connected;
  MLInputControllerTouchpadGesture touchpad_gesture;
  MLInputControllerTouchpadGestureState touchpad_gesture_state;
  uint8_t hardware_index;
} MLInputControllerStateEx;

ML_STATIC_INLINE void MLInputControllerStateExInit(MLInputControllerStateEx inout_attr[MLInput_MaxControllers]) {
  if (NULL != inout_attr) {
    for (int i = 0; i < MLInput_MaxControllers; ++i) {
      inout_attr[i].version = 1u;
    }
  }
}

typedef struct MLInputConnectedDevicesList {
  uint32_t version;
  uint32_t connected_controller_count;
  const uint8_t *connected_controller_ids;
} MLInputConnectedDevicesList;

ML_STATIC_INLINE void MLInputConnectedDevicesListInit(MLInputConnectedDevicesList *inout_devices_list) {
  if (inout_devices_list) {
    inout_devices_list->version = 2u;
    inout_devices_list->connected_controller_count = 0u;
    inout_devices_list->connected_controller_ids = NULL;
  }
}

typedef struct MLInputPreDefinedPattern {
  uint32_t version;
  uint32_t pattern;
} MLInputPreDefinedPattern;

ML_STATIC_INLINE void MLInputPreDefinedPatternInit(MLInputPreDefinedPattern *inout_pattern) {
  if (inout_pattern) {
    inout_pattern->version = 1u;
    inout_pattern->pattern = (uint32_t)MLInputPreDefinedPatternType_C;
  }
}

typedef struct MLInputBuzzCommand {
  uint32_t version;
  uint16_t start_hz;
  uint16_t end_hz;
  uint32_t duration_ms;
  uint8_t amp;
} MLInputBuzzCommand;

ML_STATIC_INLINE void MLInputBuzzCommandInit(MLInputBuzzCommand *inout_command) {
  if (inout_command) {
    inout_command->version = 1u;
    inout_command->start_hz = 200;
    inout_command->end_hz = 800;
    inout_command->duration_ms = 1000;
    inout_command->amp = 20;
  }
}

typedef struct MLInputCustomHaptics {
  MLInputCustomHapticsType type;
  union {
    MLInputBuzzCommand buzz;
    MLInputPreDefinedPattern pre_defined;
  } MLInputCustomHapticsPattern;
  uint32_t duration_ms;
} MLInputCustomHaptics;

typedef struct MLInputCustomHapticsInfo {
  uint32_t version;
  MLInputCustomHaptics *custom;
  uint32_t size;
} MLInputCustomHapticsInfo;

ML_STATIC_INLINE void MLInputCustomHapticsInfoInit(MLInputCustomHapticsInfo *inout_info) {
  if (inout_info && inout_info->custom) {
    for (uint32_t it = 0; it < inout_info->size; it++) {
      inout_info->version = 1u;
      inout_info->custom[it].type = MLInputCustomHapticsType_None;
      inout_info->custom[it].MLInputCustomHapticsPattern.pre_defined.pattern = 0;
      inout_info->custom[it].duration_ms = 0;
    }
  }
}

ML_API const char *ML_CALL MLInputGetResultString(MLResult result);

ML_API MLResult ML_CALL MLInputCreate(MLHandle *out_handle);

ML_API MLResult ML_CALL MLInputSetControllerCallbacksEx(MLHandle handle, const MLInputControllerCallbacksEx *controller_callbacks, void *user_data);

ML_DEPRECATED_MSG("Replaced by MLInputGetControllerStateEx.")
ML_API MLResult ML_CALL MLInputGetControllerState(MLHandle handle, struct MLInputControllerState out_state[MLInput_MaxControllers]);

ML_API MLResult ML_CALL MLInputGetControllerStateEx(MLHandle handle, MLInputControllerStateEx out_state[MLInput_MaxControllers]);

ML_API MLResult ML_CALL MLInputGetConnectedDevices(MLHandle handle, MLInputConnectedDevicesList *inout_devices);

ML_API MLResult ML_CALL MLInputReleaseConnectedDevicesList(MLHandle handle, MLInputConnectedDevicesList *devices);

ML_API MLResult ML_CALL MLInputStartControllerFeedbackPreDefinedPattern(MLHandle handle, uint8_t controller_id, MLInputPreDefinedPattern* pattern);

ML_API MLResult ML_CALL MLInputStartControllerFeedbackBuzzCommand(MLHandle handle, uint8_t controller_id, const MLInputBuzzCommand* command);

ML_API MLResult ML_CALL MLInputCreateCustomHapticsPattern(MLHandle handle, MLInputCustomHapticsInfo *info, uint32_t *inout_pattern_id);

ML_API MLResult ML_CALL MLInputStartControllerFeedbackCustomHapticsPattern(MLHandle handle, uint8_t controller_id, uint32_t pattern_id);

ML_API MLResult ML_CALL MLInputDeleteCustomHapticsPattern(MLHandle handle, uint32_t pattern_id);

ML_API MLResult ML_CALL MLInputStopControllerFeedback(MLHandle handle, uint8_t controller_id);

ML_API MLResult ML_CALL MLInputDestroy(MLHandle handle);
ML_EXTERN_C_END

ml_input.h

Classes​

Types​

Enums​

Functions​

Enums Documentation​

Anonymous Enum 13​

MLInputResult​

Anonymous Enum 14​

MLInputControllerTouchpadGestureState​

MLInputControllerTouchpadGestureType​

MLInputControllerTouchpadGestureDirection​

MLInputControllerType​

MLInputControllerButton​

MLInputControllerTriggerEvent​

MLInputPreDefinedPatternType​

MLInputCustomHapticsType​

MLInputControllerHand​

Types Documentation​

MLInputControllerTouchpadGesture​

MLInputControllerCallbacksEx​

MLInputControllerState​

MLInputControllerStateEx​

MLInputConnectedDevicesList​

MLInputPreDefinedPattern​

MLInputBuzzCommand​

MLInputCustomHaptics​

MLInputCustomHapticsInfo​

Functions Documentation​

MLInputControllerCallbacksExInit​

MLInputControllerStateExInit​

MLInputConnectedDevicesListInit​

MLInputPreDefinedPatternInit​

MLInputBuzzCommandInit​

MLInputCustomHapticsInfoInit​

MLInputGetResultString​

MLInputCreate​

MLInputSetControllerCallbacksEx​

MLInputGetControllerState​

MLInputGetControllerStateEx​

MLInputGetConnectedDevices​

MLInputReleaseConnectedDevicesList​

MLInputStartControllerFeedbackPreDefinedPattern​

MLInputStartControllerFeedbackBuzzCommand​

MLInputCreateCustomHapticsPattern​

MLInputStartControllerFeedbackCustomHapticsPattern​

MLInputDeleteCustomHapticsPattern​

MLInputStopControllerFeedback​

MLInputDestroy​

Source code​

Classes

Types

Enums

Functions

Enums Documentation

Anonymous Enum 13

MLInputResult

Anonymous Enum 14

MLInputControllerTouchpadGestureState

MLInputControllerTouchpadGestureType

MLInputControllerTouchpadGestureDirection

MLInputControllerType

MLInputControllerButton

MLInputControllerTriggerEvent

MLInputPreDefinedPatternType

MLInputCustomHapticsType

MLInputControllerHand

Types Documentation

MLInputControllerTouchpadGesture

MLInputControllerCallbacksEx

MLInputControllerState

MLInputControllerStateEx

MLInputConnectedDevicesList

MLInputPreDefinedPattern

MLInputBuzzCommand

MLInputCustomHaptics

MLInputCustomHapticsInfo

Functions Documentation

MLInputControllerCallbacksExInit

MLInputControllerStateExInit

MLInputConnectedDevicesListInit

MLInputPreDefinedPatternInit

MLInputBuzzCommandInit

MLInputCustomHapticsInfoInit

MLInputGetResultString

MLInputCreate

MLInputSetControllerCallbacksEx

MLInputGetControllerState

MLInputGetControllerStateEx

MLInputGetConnectedDevices

MLInputReleaseConnectedDevicesList

MLInputStartControllerFeedbackPreDefinedPattern

MLInputStartControllerFeedbackBuzzCommand

MLInputCreateCustomHapticsPattern

MLInputStartControllerFeedbackCustomHapticsPattern

MLInputDeleteCustomHapticsPattern

MLInputStopControllerFeedback

MLInputDestroy

Source code