libevdev  1.2.2
A wrapper library for evdev devices
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libevdev.h
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1 /*
2  * Copyright © 2013 Red Hat, Inc.
3  *
4  * Permission to use, copy, modify, distribute, and sell this software and its
5  * documentation for any purpose is hereby granted without fee, provided that
6  * the above copyright notice appear in all copies and that both that copyright
7  * notice and this permission notice appear in supporting documentation, and
8  * that the name of the copyright holders not be used in advertising or
9  * publicity pertaining to distribution of the software without specific,
10  * written prior permission. The copyright holders make no representations
11  * about the suitability of this software for any purpose. It is provided "as
12  * is" without express or implied warranty.
13  *
14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
20  * OF THIS SOFTWARE.
21  */
22 
23 #ifndef LIBEVDEV_H
24 #define LIBEVDEV_H
25 
26 #ifdef __cplusplus
27 extern "C" {
28 #endif
29 
30 #include <linux/input.h>
31 #include <stdarg.h>
32 
33 #define LIBEVDEV_ATTRIBUTE_PRINTF(_format, _args) __attribute__ ((format (printf, _format, _args)))
34 
701 struct libevdev;
702 
712 };
713 
728 struct libevdev* libevdev_new(void);
729 
752 int libevdev_new_from_fd(int fd, struct libevdev **dev);
753 
764 void libevdev_free(struct libevdev *dev);
765 
773 };
774 
791 typedef void (*libevdev_log_func_t)(enum libevdev_log_priority priority,
792  void *data,
793  const char *file, int line,
794  const char *func,
795  const char *format, va_list args)
797 
810 void libevdev_set_log_function(libevdev_log_func_t logfunc, void *data);
811 
823 
833 
840 };
841 
860 int libevdev_grab(struct libevdev *dev, enum libevdev_grab_mode grab);
861 
885 int libevdev_set_fd(struct libevdev* dev, int fd);
886 
922 int libevdev_change_fd(struct libevdev* dev, int fd);
923 
932 int libevdev_get_fd(const struct libevdev* dev);
933 
934 
955 };
1006 int libevdev_next_event(struct libevdev *dev, unsigned int flags, struct input_event *ev);
1007 
1030 int libevdev_has_event_pending(struct libevdev *dev);
1031 
1046 const char* libevdev_get_name(const struct libevdev *dev);
1047 
1061 void libevdev_set_name(struct libevdev *dev, const char *name);
1062 
1078 const char * libevdev_get_phys(const struct libevdev *dev);
1079 
1093 void libevdev_set_phys(struct libevdev *dev, const char *phys);
1094 
1108 const char * libevdev_get_uniq(const struct libevdev *dev);
1109 
1123 void libevdev_set_uniq(struct libevdev *dev, const char *uniq);
1124 
1134 int libevdev_get_id_product(const struct libevdev *dev);
1135 
1145 void libevdev_set_id_product(struct libevdev *dev, int product_id);
1146 
1156 int libevdev_get_id_vendor(const struct libevdev *dev);
1157 
1167 void libevdev_set_id_vendor(struct libevdev *dev, int vendor_id);
1168 
1178 int libevdev_get_id_bustype(const struct libevdev *dev);
1179 
1189 void libevdev_set_id_bustype(struct libevdev *dev, int bustype);
1190 
1200 int libevdev_get_id_version(const struct libevdev *dev);
1201 
1211 void libevdev_set_id_version(struct libevdev *dev, int version);
1212 
1222 int libevdev_get_driver_version(const struct libevdev *dev);
1223 
1234 int libevdev_has_property(const struct libevdev *dev, unsigned int prop);
1235 
1247 int libevdev_enable_property(struct libevdev *dev, unsigned int prop);
1248 
1259 int libevdev_has_event_type(const struct libevdev *dev, unsigned int type);
1260 
1272 int libevdev_has_event_code(const struct libevdev *dev, unsigned int type, unsigned int code);
1273 
1286 int libevdev_get_abs_minimum(const struct libevdev *dev, unsigned int code);
1299 int libevdev_get_abs_maximum(const struct libevdev *dev, unsigned int code);
1312 int libevdev_get_abs_fuzz(const struct libevdev *dev, unsigned int code);
1325 int libevdev_get_abs_flat(const struct libevdev *dev, unsigned int code);
1338 int libevdev_get_abs_resolution(const struct libevdev *dev, unsigned int code);
1339 
1353 const struct input_absinfo* libevdev_get_abs_info(const struct libevdev *dev, unsigned int code);
1354 
1377 int libevdev_get_event_value(const struct libevdev *dev, unsigned int type, unsigned int code);
1378 
1410 int libevdev_set_event_value(struct libevdev *dev, unsigned int type, unsigned int code, int value);
1411 
1437 int libevdev_fetch_event_value(const struct libevdev *dev, unsigned int type, unsigned int code, int *value);
1438 
1459 int libevdev_get_slot_value(const struct libevdev *dev, unsigned int slot, unsigned int code);
1460 
1487 int libevdev_set_slot_value(struct libevdev *dev, unsigned int slot, unsigned int code, int value);
1488 
1514 int libevdev_fetch_slot_value(const struct libevdev *dev, unsigned int slot, unsigned int code, int *value);
1515 
1529 int libevdev_get_num_slots(const struct libevdev *dev);
1530 
1546 int libevdev_get_current_slot(const struct libevdev *dev);
1547 
1559 void libevdev_set_abs_minimum(struct libevdev *dev, unsigned int code, int min);
1560 
1572 void libevdev_set_abs_maximum(struct libevdev *dev, unsigned int code, int max);
1573 
1585 void libevdev_set_abs_fuzz(struct libevdev *dev, unsigned int code, int fuzz);
1586 
1598 void libevdev_set_abs_flat(struct libevdev *dev, unsigned int code, int flat);
1599 
1611 void libevdev_set_abs_resolution(struct libevdev *dev, unsigned int code, int resolution);
1612 
1624 void libevdev_set_abs_info(struct libevdev *dev, unsigned int code, const struct input_absinfo *abs);
1625 
1643 int libevdev_enable_event_type(struct libevdev *dev, unsigned int type);
1644 
1671 int libevdev_disable_event_type(struct libevdev *dev, unsigned int type);
1672 
1706 int libevdev_enable_event_code(struct libevdev *dev, unsigned int type, unsigned int code, const void *data);
1707 
1735 int libevdev_disable_event_code(struct libevdev *dev, unsigned int type, unsigned int code);
1736 
1751 int libevdev_kernel_set_abs_info(struct libevdev *dev, unsigned int code, const struct input_absinfo *abs);
1752 
1753 
1760 };
1761 
1775 int libevdev_kernel_set_led_value(struct libevdev *dev, unsigned int code, enum libevdev_led_value value);
1776 
1800 int libevdev_kernel_set_led_values(struct libevdev *dev, ...);
1801 
1816 int libevdev_set_clock_id(struct libevdev *dev, int clockid);
1817 
1839 int libevdev_event_is_type(const struct input_event *ev, unsigned int type);
1840 
1864 int libevdev_event_is_code(const struct input_event *ev, unsigned int type, unsigned int code);
1865 
1877 const char * libevdev_event_type_get_name(unsigned int type);
1890 const char * libevdev_event_code_get_name(unsigned int type, unsigned int code);
1891 
1905 const char* libevdev_property_get_name(unsigned int prop);
1906 
1919 int libevdev_event_type_get_max(unsigned int type);
1920 
1935 int libevdev_event_type_from_name(const char *name);
1936 
1953 int libevdev_event_type_from_name_n(const char *name, size_t len);
1954 
1974 int libevdev_event_code_from_name(unsigned int type, const char *name);
1975 
1997 int libevdev_event_code_from_name_n(unsigned int type, const char *name,
1998  size_t len);
1999 
2017 int libevdev_get_repeat(const struct libevdev *dev, int *delay, int *period);
2018 
2019 
2020 /********* DEPRECATED SECTION *********/
2021 #if defined(__GNUC__) && __GNUC__ >= 4
2022 #define LIBEVDEV_DEPRECATED __attribute__ ((deprecated))
2023 #else
2024 #define LIBEVDEV_DEPRECATED
2025 #endif
2026 
2027 #ifdef __cplusplus
2028 }
2029 #endif
2030 
2031 #endif /* LIBEVDEV_H */
libevdev_read_status
Definition: libevdev.h:938
int libevdev_get_abs_resolution(const struct libevdev *dev, unsigned int code)
Get the axis resolution for the given axis, as advertised by the kernel.
int libevdev_has_event_pending(struct libevdev *dev)
Check if there are events waiting for us.
libevdev_log_priority
Definition: libevdev.h:769
int libevdev_event_type_from_name_n(const char *name, size_t len)
Look up an event-type by its name.
enum libevdev_log_priority libevdev_get_log_priority(void)
Return the current log priority level.
int libevdev_has_property(const struct libevdev *dev, unsigned int prop)
int libevdev_change_fd(struct libevdev *dev, int fd)
Change the fd for this device, without re-reading the actual device.
int libevdev_enable_property(struct libevdev *dev, unsigned int prop)
const char * libevdev_event_type_get_name(unsigned int type)
int libevdev_has_event_code(const struct libevdev *dev, unsigned int type, unsigned int code)
const struct input_absinfo * libevdev_get_abs_info(const struct libevdev *dev, unsigned int code)
Get the axis info for the given axis, as advertised by the kernel.
void libevdev_set_abs_fuzz(struct libevdev *dev, unsigned int code, int fuzz)
Change the fuzz for the given EV_ABS event code, if the code exists.
Process data in sync mode.
Definition: libevdev.h:707
int libevdev_get_fd(const struct libevdev *dev)
libevdev_led_value
Definition: libevdev.h:1757
void libevdev_set_uniq(struct libevdev *dev, const char *uniq)
Change the device's unique identifier as returned by libevdev_get_uniq().
debug information
Definition: libevdev.h:772
const char * libevdev_event_code_get_name(unsigned int type, unsigned int code)
int libevdev_get_repeat(const struct libevdev *dev, int *delay, int *period)
Get the repeat delay and repeat period values for this device.
void libevdev_set_log_function(libevdev_log_func_t logfunc, void *data)
Set a printf-style logging handler for library-internal logging.
The fd is not in O_NONBLOCK and a read may block.
Definition: libevdev.h:711
int libevdev_has_event_type(const struct libevdev *dev, unsigned int type)
int libevdev_event_code_from_name(unsigned int type, const char *name)
Look up an event code by its type and name.
Turn the LED off.
Definition: libevdev.h:1759
void libevdev_set_abs_maximum(struct libevdev *dev, unsigned int code, int max)
Change the maximum for the given EV_ABS event code, if the code exists.
Pretend the next event is a SYN_DROPPED and require the caller to sync.
Definition: libevdev.h:709
int libevdev_get_abs_fuzz(const struct libevdev *dev, unsigned int code)
Get the axis fuzz for the given axis, as advertised by the kernel.
int libevdev_set_slot_value(struct libevdev *dev, unsigned int slot, unsigned int code, int value)
Set the value for a given code for the given slot.
int libevdev_event_code_from_name_n(unsigned int type, const char *name, size_t len)
Look up an event code by its type and name.
void libevdev_set_id_vendor(struct libevdev *dev, int vendor_id)
void libevdev_set_log_priority(enum libevdev_log_priority priority)
Define the minimum level to be printed to the log handler.
void libevdev_set_abs_resolution(struct libevdev *dev, unsigned int code, int resolution)
Change the resolution for the given EV_ABS event code, if the code exists.
int libevdev_get_abs_minimum(const struct libevdev *dev, unsigned int code)
Get the minimum axis value for the given axis, as advertised by the kernel.
int libevdev_grab(struct libevdev *dev, enum libevdev_grab_mode grab)
Grab or ungrab the device through a kernel EVIOCGRAB.
Turn the LED on.
Definition: libevdev.h:1758
int libevdev_get_id_bustype(const struct libevdev *dev)
int libevdev_event_type_get_max(unsigned int type)
int libevdev_event_type_from_name(const char *name)
Look up an event-type by its name.
int libevdev_disable_event_code(struct libevdev *dev, unsigned int type, unsigned int code)
Forcibly disable an event code on this device, even if the underlying device provides it...
int libevdev_get_slot_value(const struct libevdev *dev, unsigned int slot, unsigned int code)
Return the current value of the code for the given slot.
int libevdev_get_event_value(const struct libevdev *dev, unsigned int type, unsigned int code)
Behaviour of this function is undefined if the device does not provide the event. ...
const char * libevdev_get_name(const struct libevdev *dev)
Retrieve the device's name, either as set by the caller or as read from the kernel.
int libevdev_get_driver_version(const struct libevdev *dev)
int libevdev_get_id_version(const struct libevdev *dev)
int libevdev_get_abs_flat(const struct libevdev *dev, unsigned int code)
Get the axis flat for the given axis, as advertised by the kernel.
int libevdev_next_event(struct libevdev *dev, unsigned int flags, struct input_event *ev)
Get the next event from the device.
const char * libevdev_get_uniq(const struct libevdev *dev)
Retrieve the device's unique identifier, either as set by the caller or as read from the kernel...
Depending on the libevdev_next_event() read flag:
Definition: libevdev.h:954
int libevdev_new_from_fd(int fd, struct libevdev **dev)
Initialize a new libevdev device from the given fd.
void(* libevdev_log_func_t)(enum libevdev_log_priority priority, void *data, const char *file, int line, const char *func, const char *format, va_list args)
Logging function called by library-internal logging.
Definition: libevdev.h:791
int libevdev_fetch_event_value(const struct libevdev *dev, unsigned int type, unsigned int code, int *value)
Fetch the current value of the event type.
int libevdev_set_event_value(struct libevdev *dev, unsigned int type, unsigned int code, int value)
Set the value for a given event type and code.
int libevdev_kernel_set_abs_info(struct libevdev *dev, unsigned int code, const struct input_absinfo *abs)
Set the device's EV_ABS axis to the value defined in the abs parameter.
int libevdev_fetch_slot_value(const struct libevdev *dev, unsigned int slot, unsigned int code, int *value)
Fetch the current value of the code for the given slot.
int libevdev_get_abs_maximum(const struct libevdev *dev, unsigned int code)
Get the maximum axis value for the given axis, as advertised by the kernel.
void libevdev_set_id_bustype(struct libevdev *dev, int bustype)
int libevdev_get_current_slot(const struct libevdev *dev)
Get the currently active slot.
int libevdev_event_is_code(const struct input_event *ev, unsigned int type, unsigned int code)
Helper function to check if an event is of a specific type and code.
int libevdev_event_is_type(const struct input_event *ev, unsigned int type)
Helper function to check if an event is of a specific type.
void libevdev_set_id_version(struct libevdev *dev, int version)
const char * libevdev_property_get_name(unsigned int prop)
#define LIBEVDEV_ATTRIBUTE_PRINTF(_format, _args)
Definition: libevdev.h:33
int libevdev_get_id_product(const struct libevdev *dev)
const char * libevdev_get_phys(const struct libevdev *dev)
Retrieve the device's physical location, either as set by the caller or as read from the kernel...
int libevdev_enable_event_type(struct libevdev *dev, unsigned int type)
Forcibly enable an event type on this device, even if the underlying device does not support it...
int libevdev_kernel_set_led_value(struct libevdev *dev, unsigned int code, enum libevdev_led_value value)
Turn an LED on or off.
int libevdev_set_clock_id(struct libevdev *dev, int clockid)
Set the clock ID to be used for timestamps.
int libevdev_get_num_slots(const struct libevdev *dev)
Get the number of slots supported by this device.
libevdev_next_event() has finished without an error and an event is available for processing...
Definition: libevdev.h:945
int libevdev_enable_event_code(struct libevdev *dev, unsigned int type, unsigned int code, const void *data)
Forcibly enable an event type on this device, even if the underlying device does not support it...
libevdev_read_flag
Definition: libevdev.h:706
int libevdev_set_fd(struct libevdev *dev, int fd)
Set the fd for this struct and initialize internal data.
int libevdev_kernel_set_led_values(struct libevdev *dev,...)
Turn multiple LEDs on or off simultaneously.
void libevdev_set_abs_flat(struct libevdev *dev, unsigned int code, int flat)
Change the flat for the given EV_ABS event code, if the code exists.
void libevdev_set_phys(struct libevdev *dev, const char *phys)
Change the device's physical location as returned by libevdev_get_phys().
int libevdev_disable_event_type(struct libevdev *dev, unsigned int type)
Forcibly disable an event type on this device, even if the underlying device provides it...
critical errors and application bugs
Definition: libevdev.h:770
void libevdev_set_abs_info(struct libevdev *dev, unsigned int code, const struct input_absinfo *abs)
Change the abs info for the given EV_ABS event code, if the code exists.
Grab the device if not currently grabbed.
Definition: libevdev.h:838
void libevdev_set_name(struct libevdev *dev, const char *name)
Change the device's name as returned by libevdev_get_name().
void libevdev_free(struct libevdev *dev)
Clean up and free the libevdev struct.
void libevdev_set_abs_minimum(struct libevdev *dev, unsigned int code, int min)
Change the minimum for the given EV_ABS event code, if the code exists.
informational messages
Definition: libevdev.h:771
int libevdev_get_id_vendor(const struct libevdev *dev)
Process data in normal mode.
Definition: libevdev.h:708
libevdev_grab_mode
Definition: libevdev.h:837
void libevdev_set_id_product(struct libevdev *dev, int product_id)
struct libevdev * libevdev_new(void)
Initialize a new libevdev device.
Ungrab the device if currently grabbed.
Definition: libevdev.h:839