1/*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
4
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
8
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
12
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
20*/
21#include "SDL_internal.h"
22
23#ifndef SDL_sensor_c_h_
24#define SDL_sensor_c_h_
25
26#ifdef SDL_THREAD_SAFETY_ANALYSIS
27extern SDL_Mutex *SDL_sensor_lock;
28#endif
29
30struct SDL_SensorDriver;
31
32// Useful functions and variables from SDL_sensor.c
33
34// Initialization and shutdown functions
35extern bool SDL_InitSensors(void);
36extern void SDL_QuitSensors(void);
37
38// Return whether the sensor system is currently initialized
39extern bool SDL_SensorsInitialized(void);
40
41// Return whether the sensors are currently locked
42extern bool SDL_SensorsLocked(void);
43
44// Make sure we currently have the sensors locked
45extern void SDL_AssertSensorsLocked(void) SDL_ASSERT_CAPABILITY(SDL_sensor_lock);
46
47extern void SDL_LockSensors(void) SDL_ACQUIRE(SDL_sensor_lock);
48extern void SDL_UnlockSensors(void) SDL_RELEASE(SDL_sensor_lock);
49
50// Function to return whether there are any sensors opened by the application
51extern bool SDL_SensorsOpened(void);
52
53// Update an individual sensor, used by gamepad sensor fusion
54extern void SDL_UpdateSensor(SDL_Sensor *sensor);
55
56// Internal event queueing functions
57extern void SDL_SendSensorUpdate(Uint64 timestamp, SDL_Sensor *sensor, Uint64 sensor_timestamp, float *data, int num_values);
58
59#endif // SDL_sensor_c_h_
60