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fa0ca3d41e
udev distinguishes between ID_INPUT_KEY, a device with any keyboard keys at all (including for example USB numeric keypads, Bluetooth headsets with volume control buttons, and some game controllers; and ID_INPUT_KEYBOARD, a reasonably fully-featured keyboard that you could use for general-purpose text entry. If we do the same here, then it's useful input to our heuristics for identifying devices: for example, a device with ID_INPUT_KEY could reasonably be a gamepad, but a device with ID_INPUT_KEYBOARD certainly isn't. Resolves: https://github.com/libsdl-org/SDL/issues/7827 Signed-off-by: Simon McVittie <smcv@collabora.com>
59 lines
2.2 KiB
C
59 lines
2.2 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
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Copyright (C) 2020 Collabora Ltd.
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#ifndef SDL_evdev_capabilities_h_
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#define SDL_evdev_capabilities_h_
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#ifdef HAVE_LINUX_INPUT_H
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#include <linux/input.h>
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/* A device can be any combination of these classes */
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typedef enum
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{
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SDL_UDEV_DEVICE_UNKNOWN = 0x0000,
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SDL_UDEV_DEVICE_MOUSE = 0x0001,
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SDL_UDEV_DEVICE_KEYBOARD = 0x0002,
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SDL_UDEV_DEVICE_JOYSTICK = 0x0004,
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SDL_UDEV_DEVICE_SOUND = 0x0008,
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SDL_UDEV_DEVICE_TOUCHSCREEN = 0x0010,
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SDL_UDEV_DEVICE_ACCELEROMETER = 0x0020,
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SDL_UDEV_DEVICE_TOUCHPAD = 0x0040,
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SDL_UDEV_DEVICE_HAS_KEYS = 0x0080,
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} SDL_UDEV_deviceclass;
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#define BITS_PER_LONG (sizeof(unsigned long) * 8)
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#define NBITS(x) ((((x)-1) / BITS_PER_LONG) + 1)
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#define EVDEV_OFF(x) ((x) % BITS_PER_LONG)
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#define EVDEV_LONG(x) ((x) / BITS_PER_LONG)
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#define test_bit(bit, array) ((array[EVDEV_LONG(bit)] >> EVDEV_OFF(bit)) & 1)
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extern int SDL_EVDEV_GuessDeviceClass(const unsigned long bitmask_ev[NBITS(EV_MAX)],
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const unsigned long bitmask_abs[NBITS(ABS_MAX)],
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const unsigned long bitmask_key[NBITS(KEY_MAX)],
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const unsigned long bitmask_rel[NBITS(REL_MAX)]);
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#endif /* HAVE_LINUX_INPUT_H */
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#endif /* SDL_evdev_capabilities_h_ */
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