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platform_hardware_libhardware/include/hardware/input.h
Tim Kilbourn 864984c3b1 MouseInputMapper 
Maps relative movements of a mouse or scroll wheel and mouse button
presses. All other logic from CursorInputMapper will be handled in the
host.

Change-Id: I00a966a6194d4810b7b6ac5cc815287ecf7dfb84
2015-07-28 13:21:10 -07:00

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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_INCLUDE_HARDWARE_INPUT_H
#define ANDROID_INCLUDE_HARDWARE_INPUT_H
#include <hardware/hardware.h>
#include <stdint.h>
__BEGIN_DECLS
#define INPUT_MODULE_API_VERSION_1_0 HARDWARE_MODULE_API_VERSION(1, 0)
#define INPUT_HARDWARE_MODULE_ID "input"
#define INPUT_INSTANCE_EVDEV "evdev"
typedef enum input_bus {
INPUT_BUS_BT,
INPUT_BUS_USB,
INPUT_BUS_SERIAL,
INPUT_BUS_BUILTIN
} input_bus_t;
typedef struct input_host input_host_t;
typedef struct input_device_handle input_device_handle_t;
typedef struct input_device_identifier input_device_identifier_t;
typedef struct input_device_definition input_device_definition_t;
typedef struct input_report_definition input_report_definition_t;
typedef struct input_report input_report_t;
typedef struct input_collection input_collection_t;
typedef struct input_property_map input_property_map_t;
typedef struct input_property input_property_t;
typedef enum {
// keycodes
INPUT_USAGE_KEYCODE_UNKNOWN,
INPUT_USAGE_KEYCODE_SOFT_LEFT,
INPUT_USAGE_KEYCODE_SOFT_RIGHT,
INPUT_USAGE_KEYCODE_HOME,
INPUT_USAGE_KEYCODE_BACK,
INPUT_USAGE_KEYCODE_CALL,
INPUT_USAGE_KEYCODE_ENDCALL,
INPUT_USAGE_KEYCODE_0,
INPUT_USAGE_KEYCODE_1,
INPUT_USAGE_KEYCODE_2,
INPUT_USAGE_KEYCODE_3,
INPUT_USAGE_KEYCODE_4,
INPUT_USAGE_KEYCODE_5,
INPUT_USAGE_KEYCODE_6,
INPUT_USAGE_KEYCODE_7,
INPUT_USAGE_KEYCODE_8,
INPUT_USAGE_KEYCODE_9,
INPUT_USAGE_KEYCODE_STAR,
INPUT_USAGE_KEYCODE_POUND,
INPUT_USAGE_KEYCODE_DPAD_UP,
INPUT_USAGE_KEYCODE_DPAD_DOWN,
INPUT_USAGE_KEYCODE_DPAD_LEFT,
INPUT_USAGE_KEYCODE_DPAD_RIGHT,
INPUT_USAGE_KEYCODE_DPAD_CENTER,
INPUT_USAGE_KEYCODE_VOLUME_UP,
INPUT_USAGE_KEYCODE_VOLUME_DOWN,
INPUT_USAGE_KEYCODE_POWER,
INPUT_USAGE_KEYCODE_CAMERA,
INPUT_USAGE_KEYCODE_CLEAR,
INPUT_USAGE_KEYCODE_A,
INPUT_USAGE_KEYCODE_B,
INPUT_USAGE_KEYCODE_C,
INPUT_USAGE_KEYCODE_D,
INPUT_USAGE_KEYCODE_E,
INPUT_USAGE_KEYCODE_F,
INPUT_USAGE_KEYCODE_G,
INPUT_USAGE_KEYCODE_H,
INPUT_USAGE_KEYCODE_I,
INPUT_USAGE_KEYCODE_J,
INPUT_USAGE_KEYCODE_K,
INPUT_USAGE_KEYCODE_L,
INPUT_USAGE_KEYCODE_M,
INPUT_USAGE_KEYCODE_N,
INPUT_USAGE_KEYCODE_O,
INPUT_USAGE_KEYCODE_P,
INPUT_USAGE_KEYCODE_Q,
INPUT_USAGE_KEYCODE_R,
INPUT_USAGE_KEYCODE_S,
INPUT_USAGE_KEYCODE_T,
INPUT_USAGE_KEYCODE_U,
INPUT_USAGE_KEYCODE_V,
INPUT_USAGE_KEYCODE_W,
INPUT_USAGE_KEYCODE_X,
INPUT_USAGE_KEYCODE_Y,
INPUT_USAGE_KEYCODE_Z,
INPUT_USAGE_KEYCODE_COMMA,
INPUT_USAGE_KEYCODE_PERIOD,
INPUT_USAGE_KEYCODE_ALT_LEFT,
INPUT_USAGE_KEYCODE_ALT_RIGHT,
INPUT_USAGE_KEYCODE_SHIFT_LEFT,
INPUT_USAGE_KEYCODE_SHIFT_RIGHT,
INPUT_USAGE_KEYCODE_TAB,
INPUT_USAGE_KEYCODE_SPACE,
INPUT_USAGE_KEYCODE_SYM,
INPUT_USAGE_KEYCODE_EXPLORER,
INPUT_USAGE_KEYCODE_ENVELOPE,
INPUT_USAGE_KEYCODE_ENTER,
INPUT_USAGE_KEYCODE_DEL,
INPUT_USAGE_KEYCODE_GRAVE,
INPUT_USAGE_KEYCODE_MINUS,
INPUT_USAGE_KEYCODE_EQUALS,
INPUT_USAGE_KEYCODE_LEFT_BRACKET,
INPUT_USAGE_KEYCODE_RIGHT_BRACKET,
INPUT_USAGE_KEYCODE_BACKSLASH,
INPUT_USAGE_KEYCODE_SEMICOLON,
INPUT_USAGE_KEYCODE_APOSTROPHE,
INPUT_USAGE_KEYCODE_SLASH,
INPUT_USAGE_KEYCODE_AT,
INPUT_USAGE_KEYCODE_NUM,
INPUT_USAGE_KEYCODE_HEADSETHOOK,
INPUT_USAGE_KEYCODE_FOCUS, // *Camera* focus
INPUT_USAGE_KEYCODE_PLUS,
INPUT_USAGE_KEYCODE_MENU,
INPUT_USAGE_KEYCODE_NOTIFICATION,
INPUT_USAGE_KEYCODE_SEARCH,
INPUT_USAGE_KEYCODE_MEDIA_PLAY_PAUSE,
INPUT_USAGE_KEYCODE_MEDIA_STOP,
INPUT_USAGE_KEYCODE_MEDIA_NEXT,
INPUT_USAGE_KEYCODE_MEDIA_PREVIOUS,
INPUT_USAGE_KEYCODE_MEDIA_REWIND,
INPUT_USAGE_KEYCODE_MEDIA_FAST_FORWARD,
INPUT_USAGE_KEYCODE_MUTE,
INPUT_USAGE_KEYCODE_PAGE_UP,
INPUT_USAGE_KEYCODE_PAGE_DOWN,
INPUT_USAGE_KEYCODE_PICTSYMBOLS,
INPUT_USAGE_KEYCODE_SWITCH_CHARSET,
INPUT_USAGE_KEYCODE_BUTTON_A,
INPUT_USAGE_KEYCODE_BUTTON_B,
INPUT_USAGE_KEYCODE_BUTTON_C,
INPUT_USAGE_KEYCODE_BUTTON_X,
INPUT_USAGE_KEYCODE_BUTTON_Y,
INPUT_USAGE_KEYCODE_BUTTON_Z,
INPUT_USAGE_KEYCODE_BUTTON_L1,
INPUT_USAGE_KEYCODE_BUTTON_R1,
INPUT_USAGE_KEYCODE_BUTTON_L2,
INPUT_USAGE_KEYCODE_BUTTON_R2,
INPUT_USAGE_KEYCODE_BUTTON_THUMBL,
INPUT_USAGE_KEYCODE_BUTTON_THUMBR,
INPUT_USAGE_KEYCODE_BUTTON_START,
INPUT_USAGE_KEYCODE_BUTTON_SELECT,
INPUT_USAGE_KEYCODE_BUTTON_MODE,
INPUT_USAGE_KEYCODE_ESCAPE,
INPUT_USAGE_KEYCODE_FORWARD_DEL,
INPUT_USAGE_KEYCODE_CTRL_LEFT,
INPUT_USAGE_KEYCODE_CTRL_RIGHT,
INPUT_USAGE_KEYCODE_CAPS_LOCK,
INPUT_USAGE_KEYCODE_SCROLL_LOCK,
INPUT_USAGE_KEYCODE_META_LEFT,
INPUT_USAGE_KEYCODE_META_RIGHT,
INPUT_USAGE_KEYCODE_FUNCTION,
INPUT_USAGE_KEYCODE_SYSRQ,
INPUT_USAGE_KEYCODE_BREAK,
INPUT_USAGE_KEYCODE_MOVE_HOME,
INPUT_USAGE_KEYCODE_MOVE_END,
INPUT_USAGE_KEYCODE_INSERT,
INPUT_USAGE_KEYCODE_FORWARD,
INPUT_USAGE_KEYCODE_MEDIA_PLAY,
INPUT_USAGE_KEYCODE_MEDIA_PAUSE,
INPUT_USAGE_KEYCODE_MEDIA_CLOSE,
INPUT_USAGE_KEYCODE_MEDIA_EJECT,
INPUT_USAGE_KEYCODE_MEDIA_RECORD,
INPUT_USAGE_KEYCODE_F1,
INPUT_USAGE_KEYCODE_F2,
INPUT_USAGE_KEYCODE_F3,
INPUT_USAGE_KEYCODE_F4,
INPUT_USAGE_KEYCODE_F5,
INPUT_USAGE_KEYCODE_F6,
INPUT_USAGE_KEYCODE_F7,
INPUT_USAGE_KEYCODE_F8,
INPUT_USAGE_KEYCODE_F9,
INPUT_USAGE_KEYCODE_F10,
INPUT_USAGE_KEYCODE_F11,
INPUT_USAGE_KEYCODE_F12,
INPUT_USAGE_KEYCODE_NUM_LOCK,
INPUT_USAGE_KEYCODE_NUMPAD_0,
INPUT_USAGE_KEYCODE_NUMPAD_1,
INPUT_USAGE_KEYCODE_NUMPAD_2,
INPUT_USAGE_KEYCODE_NUMPAD_3,
INPUT_USAGE_KEYCODE_NUMPAD_4,
INPUT_USAGE_KEYCODE_NUMPAD_5,
INPUT_USAGE_KEYCODE_NUMPAD_6,
INPUT_USAGE_KEYCODE_NUMPAD_7,
INPUT_USAGE_KEYCODE_NUMPAD_8,
INPUT_USAGE_KEYCODE_NUMPAD_9,
INPUT_USAGE_KEYCODE_NUMPAD_DIVIDE,
INPUT_USAGE_KEYCODE_NUMPAD_MULTIPLY,
INPUT_USAGE_KEYCODE_NUMPAD_SUBTRACT,
INPUT_USAGE_KEYCODE_NUMPAD_ADD,
INPUT_USAGE_KEYCODE_NUMPAD_DOT,
INPUT_USAGE_KEYCODE_NUMPAD_COMMA,
INPUT_USAGE_KEYCODE_NUMPAD_ENTER,
INPUT_USAGE_KEYCODE_NUMPAD_EQUALS,
INPUT_USAGE_KEYCODE_NUMPAD_LEFT_PAREN,
INPUT_USAGE_KEYCODE_NUMPAD_RIGHT_PAREN,
INPUT_USAGE_KEYCODE_VOLUME_MUTE,
INPUT_USAGE_KEYCODE_INFO,
INPUT_USAGE_KEYCODE_CHANNEL_UP,
INPUT_USAGE_KEYCODE_CHANNEL_DOWN,
INPUT_USAGE_KEYCODE_ZOOM_IN,
INPUT_USAGE_KEYCODE_ZOOM_OUT,
INPUT_USAGE_KEYCODE_TV,
INPUT_USAGE_KEYCODE_WINDOW,
INPUT_USAGE_KEYCODE_GUIDE,
INPUT_USAGE_KEYCODE_DVR,
INPUT_USAGE_KEYCODE_BOOKMARK,
INPUT_USAGE_KEYCODE_CAPTIONS,
INPUT_USAGE_KEYCODE_SETTINGS,
INPUT_USAGE_KEYCODE_TV_POWER,
INPUT_USAGE_KEYCODE_TV_INPUT,
INPUT_USAGE_KEYCODE_STB_POWER,
INPUT_USAGE_KEYCODE_STB_INPUT,
INPUT_USAGE_KEYCODE_AVR_POWER,
INPUT_USAGE_KEYCODE_AVR_INPUT,
INPUT_USAGE_KEYCODE_PROG_RED,
INPUT_USAGE_KEYCODE_PROG_GREEN,
INPUT_USAGE_KEYCODE_PROG_YELLOW,
INPUT_USAGE_KEYCODE_PROG_BLUE,
INPUT_USAGE_KEYCODE_APP_SWITCH,
INPUT_USAGE_KEYCODE_BUTTON_1,
INPUT_USAGE_KEYCODE_BUTTON_2,
INPUT_USAGE_KEYCODE_BUTTON_3,
INPUT_USAGE_KEYCODE_BUTTON_4,
INPUT_USAGE_KEYCODE_BUTTON_5,
INPUT_USAGE_KEYCODE_BUTTON_6,
INPUT_USAGE_KEYCODE_BUTTON_7,
INPUT_USAGE_KEYCODE_BUTTON_8,
INPUT_USAGE_KEYCODE_BUTTON_9,
INPUT_USAGE_KEYCODE_BUTTON_10,
INPUT_USAGE_KEYCODE_BUTTON_11,
INPUT_USAGE_KEYCODE_BUTTON_12,
INPUT_USAGE_KEYCODE_BUTTON_13,
INPUT_USAGE_KEYCODE_BUTTON_14,
INPUT_USAGE_KEYCODE_BUTTON_15,
INPUT_USAGE_KEYCODE_BUTTON_16,
INPUT_USAGE_KEYCODE_LANGUAGE_SWITCH,
INPUT_USAGE_KEYCODE_MANNER_MODE,
INPUT_USAGE_KEYCODE_3D_MODE,
INPUT_USAGE_KEYCODE_CONTACTS,
INPUT_USAGE_KEYCODE_CALENDAR,
INPUT_USAGE_KEYCODE_MUSIC,
INPUT_USAGE_KEYCODE_CALCULATOR,
INPUT_USAGE_KEYCODE_ZENKAKU_HANKAKU,
INPUT_USAGE_KEYCODE_EISU,
INPUT_USAGE_KEYCODE_MUHENKAN,
INPUT_USAGE_KEYCODE_HENKAN,
INPUT_USAGE_KEYCODE_KATAKANA_HIRAGANA,
INPUT_USAGE_KEYCODE_YEN,
INPUT_USAGE_KEYCODE_RO,
INPUT_USAGE_KEYCODE_KANA,
INPUT_USAGE_KEYCODE_ASSIST,
INPUT_USAGE_KEYCODE_BRIGHTNESS_DOWN,
INPUT_USAGE_KEYCODE_BRIGHTNESS_UP,
INPUT_USAGE_KEYCODE_MEDIA_AUDIO_TRACK,
INPUT_USAGE_KEYCODE_SLEEP,
INPUT_USAGE_KEYCODE_WAKEUP,
INPUT_USAGE_KEYCODE_PAIRING,
INPUT_USAGE_KEYCODE_MEDIA_TOP_MENU,
INPUT_USAGE_KEYCODE_11,
INPUT_USAGE_KEYCODE_12,
INPUT_USAGE_KEYCODE_LAST_CHANNEL,
INPUT_USAGE_KEYCODE_TV_DATA_SERVICE,
INPUT_USAGE_KEYCODE_VOICE_ASSIST,
INPUT_USAGE_KEYCODE_TV_RADIO_SERVICE,
INPUT_USAGE_KEYCODE_TV_TELETEXT,
INPUT_USAGE_KEYCODE_TV_NUMBER_ENTRY,
INPUT_USAGE_KEYCODE_TV_TERRESTRIAL_ANALOG,
INPUT_USAGE_KEYCODE_TV_TERRESTRIAL_DIGITAL,
INPUT_USAGE_KEYCODE_TV_SATELLITE,
INPUT_USAGE_KEYCODE_TV_SATELLITE_BS,
INPUT_USAGE_KEYCODE_TV_SATELLITE_CS,
INPUT_USAGE_KEYCODE_TV_SATELLITE_SERVICE,
INPUT_USAGE_KEYCODE_TV_NETWORK,
INPUT_USAGE_KEYCODE_TV_ANTENNA_CABLE,
INPUT_USAGE_KEYCODE_TV_INPUT_HDMI_1,
INPUT_USAGE_KEYCODE_TV_INPUT_HDMI_2,
INPUT_USAGE_KEYCODE_TV_INPUT_HDMI_3,
INPUT_USAGE_KEYCODE_TV_INPUT_HDMI_4,
INPUT_USAGE_KEYCODE_TV_INPUT_COMPOSITE_1,
INPUT_USAGE_KEYCODE_TV_INPUT_COMPOSITE_2,
INPUT_USAGE_KEYCODE_TV_INPUT_COMPONENT_1,
INPUT_USAGE_KEYCODE_TV_INPUT_COMPONENT_2,
INPUT_USAGE_KEYCODE_TV_INPUT_VGA_1,
INPUT_USAGE_KEYCODE_TV_AUDIO_DESCRIPTION,
INPUT_USAGE_KEYCODE_TV_AUDIO_DESCRIPTION_MIX_UP,
INPUT_USAGE_KEYCODE_TV_AUDIO_DESCRIPTION_MIX_DOWN,
INPUT_USAGE_KEYCODE_TV_ZOOM_MODE,
INPUT_USAGE_KEYCODE_TV_CONTENTS_MENU,
INPUT_USAGE_KEYCODE_TV_MEDIA_CONTEXT_MENU,
INPUT_USAGE_KEYCODE_TV_TIMER_PROGRAMMING,
INPUT_USAGE_KEYCODE_HELP,
// axes
INPUT_USAGE_AXIS_X,
INPUT_USAGE_AXIS_Y,
INPUT_USAGE_AXIS_Z,
INPUT_USAGE_AXIS_RX,
INPUT_USAGE_AXIS_RY,
INPUT_USAGE_AXIS_RZ,
INPUT_USAGE_AXIS_HAT_X,
INPUT_USAGE_AXIS_HAT_Y,
INPUT_USAGE_AXIS_PRESSURE,
INPUT_USAGE_AXIS_SIZE,
INPUT_USAGE_AXIS_TOUCH_MAJOR,
INPUT_USAGE_AXIS_TOUCH_MINOR,
INPUT_USAGE_AXIS_TOOL_MAJOR,
INPUT_USAGE_AXIS_TOOL_MINOR,
INPUT_USAGE_AXIS_ORIENTATION,
INPUT_USAGE_AXIS_VSCROLL,
INPUT_USAGE_AXIS_HSCROLL,
INPUT_USAGE_AXIS_LTRIGGER,
INPUT_USAGE_AXIS_RTRIGGER,
INPUT_USAGE_AXIS_THROTTLE,
INPUT_USAGE_AXIS_RUDDER,
INPUT_USAGE_AXIS_WHEEL,
INPUT_USAGE_AXIS_GAS,
INPUT_USAGE_AXIS_BRAKE,
INPUT_USAGE_AXIS_DISTANCE,
INPUT_USAGE_AXIS_TILT,
INPUT_USAGE_AXIS_GENERIC_1,
INPUT_USAGE_AXIS_GENERIC_2,
INPUT_USAGE_AXIS_GENERIC_3,
INPUT_USAGE_AXIS_GENERIC_4,
INPUT_USAGE_AXIS_GENERIC_5,
INPUT_USAGE_AXIS_GENERIC_6,
INPUT_USAGE_AXIS_GENERIC_7,
INPUT_USAGE_AXIS_GENERIC_8,
INPUT_USAGE_AXIS_GENERIC_9,
INPUT_USAGE_AXIS_GENERIC_10,
INPUT_USAGE_AXIS_GENERIC_11,
INPUT_USAGE_AXIS_GENERIC_12,
INPUT_USAGE_AXIS_GENERIC_13,
INPUT_USAGE_AXIS_GENERIC_14,
INPUT_USAGE_AXIS_GENERIC_15,
INPUT_USAGE_AXIS_GENERIC_16,
// leds
INPUT_USAGE_LED_NUM_LOCK,
INPUT_USAGE_LED_CAPS_LOCK,
INPUT_USAGE_LED_SCROLL_LOCK,
INPUT_USAGE_LED_COMPOSE,
INPUT_USAGE_LED_KANA,
INPUT_USAGE_LED_SLEEP,
INPUT_USAGE_LED_SUSPEND,
INPUT_USAGE_LED_MUTE,
INPUT_USAGE_LED_MISC,
INPUT_USAGE_LED_MAIL,
INPUT_USAGE_LED_CHARGING,
INPUT_USAGE_LED_CONTROLLER_1,
INPUT_USAGE_LED_CONTROLLER_2,
INPUT_USAGE_LED_CONTROLLER_3,
INPUT_USAGE_LED_CONTROLLER_4,
// switches
INPUT_USAGE_SWITCH_UNKNOWN,
INPUT_USAGE_SWITCH_LID,
INPUT_USAGE_SWITCH_KEYPAD_SLIDE,
INPUT_USAGE_SWITCH_HEADPHONE_INSERT,
INPUT_USAGE_SWITCH_MICROPHONE_INSERT,
INPUT_USAGE_SWITCH_LINEOUT_INSERT,
INPUT_USAGE_SWITCH_CAMERA_LENS_COVER,
// mouse buttons
// (see android.view.MotionEvent)
INPUT_USAGE_BUTTON_UNKNOWN,
INPUT_USAGE_BUTTON_PRIMARY, // left
INPUT_USAGE_BUTTON_SECONDARY, // right
INPUT_USAGE_BUTTON_TERTIARY, // middle
INPUT_USAGE_BUTTON_FORWARD,
INPUT_USAGE_BUTTON_BACK,
} input_usage_t;
typedef enum input_collection_id {
INPUT_COLLECTION_ID_TOUCH,
INPUT_COLLECTION_ID_KEYBOARD,
INPUT_COLLECTION_ID_MOUSE,
INPUT_COLLECTION_ID_TOUCHPAD,
INPUT_COLLECTION_ID_SWITCH,
// etc
} input_collection_id_t;
typedef struct input_message input_message_t;
typedef struct input_host_callbacks {
/**
* Creates a device identifier with the given properties.
* The unique ID should be a string that precisely identifies a given piece of hardware. For
* example, an input device connected via Bluetooth could use its MAC address as its unique ID.
*/
input_device_identifier_t* (*create_device_identifier)(input_host_t* host,
const char* name, int32_t product_id, int32_t vendor_id,
input_bus_t bus, const char* unique_id);
/**
* Allocates the device definition which will describe the input capabilities of a device. A
* device definition may be used to register as many devices as desired.
*/
input_device_definition_t* (*create_device_definition)(input_host_t* host);
/**
* Allocate either an input report, which the HAL will use to tell the host of incoming input
* events, or an output report, which the host will use to tell the HAL of desired state
* changes (e.g. setting an LED).
*/
input_report_definition_t* (*create_input_report_definition)(input_host_t* host);
input_report_definition_t* (*create_output_report_definition)(input_host_t* host);
/**
* Frees the report definition.
*/
void (*free_report_definition)(input_host_t* host, input_report_definition_t* report_def);
/**
* Append the report to the given input device.
*/
void (*input_device_definition_add_report)(input_host_t* host,
input_device_definition_t* d, input_report_definition_t* r);
/**
* Add a collection with the given arity and ID. A collection describes a set
* of logically grouped properties such as the X and Y coordinates of a single finger touch or
* the set of keys on a keyboard. The arity declares how many repeated instances of this
* collection will appear in whatever report it is attached to. The ID describes the type of
* grouping being represented by the collection. For example, a touchscreen capable of
* reporting up to 2 fingers simultaneously might have a collection with the X and Y
* coordinates, an arity of 2, and an ID of INPUT_COLLECTION_USAGE_TOUCHSCREEN. Any given ID
* may only be present once for a given report.
*/
void (*input_report_definition_add_collection)(input_host_t* host,
input_report_definition_t* report, input_collection_id_t id, int32_t arity);
/**
* Declare an int usage with the given properties. The report and collection defines where the
* usage is being declared.
*/
void (*input_report_definition_declare_usage_int)(input_host_t* host,
input_report_definition_t* report, input_collection_id_t id,
input_usage_t usage, int32_t min, int32_t max, float resolution);
/**
* Declare a set of boolean usages with the given properties. The report and collection
* defines where the usages are being declared.
*/
void (*input_report_definition_declare_usages_bool)(input_host_t* host,
input_report_definition_t* report, input_collection_id_t id,
input_usage_t* usage, size_t usage_count);
/**
* Register a given input device definition. This notifies the host that an input device has
* been connected and gives a description of all its capabilities.
*/
input_device_handle_t* (*register_device)(input_host_t* host,
input_device_identifier_t* id, input_device_definition_t* d);
/** Unregister the given device */
void (*unregister_device)(input_host_t* host, input_device_handle_t* handle);
/**
* Allocate a report that will contain all of the state as described by the given report.
*/
input_report_t* (*input_allocate_report)(input_host_t* host, input_report_definition_t* r);
/**
* Add an int usage value to a report.
*/
void (*input_report_set_usage_int)(input_host_t* host, input_report_t* r,
input_collection_id_t id, input_usage_t usage, int32_t value, int32_t arity_index);
/**
* Add a boolean usage value to a report.
*/
void (*input_report_set_usage_bool)(input_host_t* host, input_report_t* r,
input_collection_id_t id, input_usage_t usage, bool value, int32_t arity_index);
void (*report_event)(input_host_t* host, input_device_handle_t* d, input_report_t* report);
/**
* Retrieve the set of properties for the device. The returned
* input_property_map_t* may be used to query specific properties via the
* input_get_device_property callback.
*/
input_property_map_t* (*input_get_device_property_map)(input_host_t* host,
input_device_identifier_t* id);
/**
* Retrieve a property for the device with the given key. Returns NULL if
* the key does not exist, or an input_property_t* that must be freed using
* input_free_device_property(). Using an input_property_t after the
* corresponding input_property_map_t is freed is undefined.
*/
input_property_t* (*input_get_device_property)(input_host_t* host,
input_property_map_t* map, const char* key);
/**
* Get the key for the input property. Returns NULL if the property is NULL.
* The returned const char* is owned by the input_property_t.
*/
const char* (*input_get_property_key)(input_host_t* host, input_property_t* property);
/**
* Get the value for the input property. Returns NULL if the property is
* NULL. The returned const char* is owned by the input_property_t.
*/
const char* (*input_get_property_value)(input_host_t* host, input_property_t* property);
/**
* Frees the input_property_t*.
*/
void (*input_free_device_property)(input_host_t* host, input_property_t* property);
/**
* Frees the input_property_map_t*.
*/
void (*input_free_device_property_map)(input_host_t* host, input_property_map_t* map);
} input_host_callbacks_t;
typedef struct input_module input_module_t;
struct input_module {
/**
* Common methods of the input module. This *must* be the first member
* of input_module as users of this structure will cast a hw_module_t
* to input_module pointer in contexts where it's known
* the hw_module_t references a input_module.
*/
struct hw_module_t common;
/**
* Initialize the module with host callbacks. At this point the HAL should start up whatever
* infrastructure it needs to in order to process input events.
*/
void (*init)(const input_module_t* module, input_host_t* host, input_host_callbacks_t cb);
/**
* Sends an output report with a new set of state the host would like the given device to
* assume.
*/
void (*notify_report)(const input_module_t* module, input_report_t* report);
};
static inline int input_open(const struct hw_module_t** module, const char* type) {
return hw_get_module_by_class(INPUT_HARDWARE_MODULE_ID, type, module);
}
__END_DECLS
#endif /* ANDROID_INCLUDE_HARDWARE_INPUT_H */
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