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Diffstat (limited to 'dependencies/SDL/SDL_sensor.h')
| -rw-r--r-- | dependencies/SDL/SDL_sensor.h | 322 |
1 files changed, 322 insertions, 0 deletions
diff --git a/dependencies/SDL/SDL_sensor.h b/dependencies/SDL/SDL_sensor.h new file mode 100644 index 0000000..684d2c6 --- /dev/null +++ b/dependencies/SDL/SDL_sensor.h @@ -0,0 +1,322 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +/** + * \file SDL_sensor.h + * + * Include file for SDL sensor event handling + * + */ + +#ifndef SDL_sensor_h_ +#define SDL_sensor_h_ + +#include "SDL_stdinc.h" +#include "SDL_error.h" + +#include "begin_code.h" +/* Set up for C function definitions, even when using C++ */ +#ifdef __cplusplus +/* *INDENT-OFF* */ +extern "C" { +/* *INDENT-ON* */ +#endif + +/** + * \brief SDL_sensor.h + * + * In order to use these functions, SDL_Init() must have been called + * with the ::SDL_INIT_SENSOR flag. This causes SDL to scan the system + * for sensors, and load appropriate drivers. + */ + +struct _SDL_Sensor; +typedef struct _SDL_Sensor SDL_Sensor; + +/** + * This is a unique ID for a sensor for the time it is connected to the system, + * and is never reused for the lifetime of the application. + * + * The ID value starts at 0 and increments from there. The value -1 is an invalid ID. + */ +typedef Sint32 SDL_SensorID; + +/* The different sensors defined by SDL + * + * Additional sensors may be available, using platform dependent semantics. + * + * Hare are the additional Android sensors: + * https://developer.android.com/reference/android/hardware/SensorEvent.html#values + */ +typedef enum +{ + SDL_SENSOR_INVALID = -1, /**< Returned for an invalid sensor */ + SDL_SENSOR_UNKNOWN, /**< Unknown sensor type */ + SDL_SENSOR_ACCEL, /**< Accelerometer */ + SDL_SENSOR_GYRO, /**< Gyroscope */ + SDL_SENSOR_ACCEL_L, /**< Accelerometer for left Joy-Con controller and Wii nunchuk */ + SDL_SENSOR_GYRO_L, /**< Gyroscope for left Joy-Con controller */ + SDL_SENSOR_ACCEL_R, /**< Accelerometer for right Joy-Con controller */ + SDL_SENSOR_GYRO_R /**< Gyroscope for right Joy-Con controller */ +} SDL_SensorType; + +/** + * Accelerometer sensor + * + * The accelerometer returns the current acceleration in SI meters per + * second squared. This measurement includes the force of gravity, so + * a device at rest will have an value of SDL_STANDARD_GRAVITY away + * from the center of the earth. + * + * values[0]: Acceleration on the x axis + * values[1]: Acceleration on the y axis + * values[2]: Acceleration on the z axis + * + * For phones held in portrait mode and game controllers held in front of you, + * the axes are defined as follows: + * -X ... +X : left ... right + * -Y ... +Y : bottom ... top + * -Z ... +Z : farther ... closer + * + * The axis data is not changed when the phone is rotated. + * + * \sa SDL_GetDisplayOrientation() + */ +#define SDL_STANDARD_GRAVITY 9.80665f + +/** + * Gyroscope sensor + * + * The gyroscope returns the current rate of rotation in radians per second. + * The rotation is positive in the counter-clockwise direction. That is, + * an observer looking from a positive location on one of the axes would + * see positive rotation on that axis when it appeared to be rotating + * counter-clockwise. + * + * values[0]: Angular speed around the x axis (pitch) + * values[1]: Angular speed around the y axis (yaw) + * values[2]: Angular speed around the z axis (roll) + * + * For phones held in portrait mode and game controllers held in front of you, + * the axes are defined as follows: + * -X ... +X : left ... right + * -Y ... +Y : bottom ... top + * -Z ... +Z : farther ... closer + * + * The axis data is not changed when the phone or controller is rotated. + * + * \sa SDL_GetDisplayOrientation() + */ + +/* Function prototypes */ + +/** + * Locking for multi-threaded access to the sensor API + * + * If you are using the sensor API or handling events from multiple threads + * you should use these locking functions to protect access to the sensors. + * + * In particular, you are guaranteed that the sensor list won't change, so the + * API functions that take a sensor index will be valid, and sensor events + * will not be delivered. + * + * \since This function is available since SDL 2.0.14. + */ +extern DECLSPEC void SDLCALL SDL_LockSensors(void); +extern DECLSPEC void SDLCALL SDL_UnlockSensors(void); + +/** + * Count the number of sensors attached to the system right now. + * + * \returns the number of sensors detected. + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC int SDLCALL SDL_NumSensors(void); + +/** + * Get the implementation dependent name of a sensor. + * + * \param device_index The sensor to obtain name from + * \returns the sensor name, or NULL if `device_index` is out of range. + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC const char *SDLCALL SDL_SensorGetDeviceName(int device_index); + +/** + * Get the type of a sensor. + * + * \param device_index The sensor to get the type from + * \returns the SDL_SensorType, or `SDL_SENSOR_INVALID` if `device_index` is + * out of range. + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC SDL_SensorType SDLCALL SDL_SensorGetDeviceType(int device_index); + +/** + * Get the platform dependent type of a sensor. + * + * \param device_index The sensor to check + * \returns the sensor platform dependent type, or -1 if `device_index` is out + * of range. + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC int SDLCALL SDL_SensorGetDeviceNonPortableType(int device_index); + +/** + * Get the instance ID of a sensor. + * + * \param device_index The sensor to get instance id from + * \returns the sensor instance ID, or -1 if `device_index` is out of range. + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC SDL_SensorID SDLCALL SDL_SensorGetDeviceInstanceID(int device_index); + +/** + * Open a sensor for use. + * + * \param device_index The sensor to open + * \returns an SDL_Sensor sensor object, or NULL if an error occurred. + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC SDL_Sensor *SDLCALL SDL_SensorOpen(int device_index); + +/** + * Return the SDL_Sensor associated with an instance id. + * + * \param instance_id The sensor from instance id + * \returns an SDL_Sensor object. + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC SDL_Sensor *SDLCALL SDL_SensorFromInstanceID(SDL_SensorID instance_id); + +/** + * Get the implementation dependent name of a sensor + * + * \param sensor The SDL_Sensor object + * \returns the sensor name, or NULL if `sensor` is NULL. + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC const char *SDLCALL SDL_SensorGetName(SDL_Sensor *sensor); + +/** + * Get the type of a sensor. + * + * \param sensor The SDL_Sensor object to inspect + * \returns the SDL_SensorType type, or `SDL_SENSOR_INVALID` if `sensor` is + * NULL. + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC SDL_SensorType SDLCALL SDL_SensorGetType(SDL_Sensor *sensor); + +/** + * Get the platform dependent type of a sensor. + * + * \param sensor The SDL_Sensor object to inspect + * \returns the sensor platform dependent type, or -1 if `sensor` is NULL. + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC int SDLCALL SDL_SensorGetNonPortableType(SDL_Sensor *sensor); + +/** + * Get the instance ID of a sensor. + * + * \param sensor The SDL_Sensor object to inspect + * \returns the sensor instance ID, or -1 if `sensor` is NULL. + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC SDL_SensorID SDLCALL SDL_SensorGetInstanceID(SDL_Sensor *sensor); + +/** + * Get the current state of an opened sensor. + * + * The number of values and interpretation of the data is sensor dependent. + * + * \param sensor The SDL_Sensor object to query + * \param data A pointer filled with the current sensor state + * \param num_values The number of values to write to data + * \returns 0 or -1 if an error occurred. + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC int SDLCALL SDL_SensorGetData(SDL_Sensor *sensor, float *data, int num_values); + +/** + * Get the current state of an opened sensor with the timestamp of the last + * update. + * + * The number of values and interpretation of the data is sensor dependent. + * + * \param sensor The SDL_Sensor object to query + * \param timestamp A pointer filled with the timestamp in microseconds of the + * current sensor reading if available, or 0 if not + * \param data A pointer filled with the current sensor state + * \param num_values The number of values to write to data + * \returns 0 or -1 if an error occurred. + * + * \since This function is available since SDL 2.26.0. + */ +extern DECLSPEC int SDLCALL SDL_SensorGetDataWithTimestamp(SDL_Sensor *sensor, Uint64 *timestamp, float *data, int num_values); + +/** + * Close a sensor previously opened with SDL_SensorOpen(). + * + * \param sensor The SDL_Sensor object to close + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC void SDLCALL SDL_SensorClose(SDL_Sensor *sensor); + +/** + * Update the current state of the open sensors. + * + * This is called automatically by the event loop if sensor events are + * enabled. + * + * This needs to be called from the thread that initialized the sensor + * subsystem. + * + * \since This function is available since SDL 2.0.9. + */ +extern DECLSPEC void SDLCALL SDL_SensorUpdate(void); + + +/* Ends C function definitions when using C++ */ +#ifdef __cplusplus +/* *INDENT-OFF* */ +} +/* *INDENT-ON* */ +#endif +#include "close_code.h" + +#endif /* SDL_sensor_h_ */ + +/* vi: set ts=4 sw=4 expandtab: */ |