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SDL_syshaptic.h (6084B)

      1 /*
      2   Simple DirectMedia Layer
      3   Copyright (C) 1997-2020 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 
     22 #include "../SDL_internal.h"
     23 
     24 #ifndef SDL_syshaptic_h_
     25 #define SDL_syshaptic_h_
     26 
     27 #include "SDL_haptic.h"
     28 
     29 
     30 struct haptic_effect
     31 {
     32     SDL_HapticEffect effect;    /* The current event */
     33     struct haptic_hweffect *hweffect;   /* The hardware behind the event */
     34 };
     35 
     36 /*
     37  * The real SDL_Haptic struct.
     38  */
     39 struct _SDL_Haptic
     40 {
     41     Uint8 index;                /* Stores index it is attached to */
     42 
     43     struct haptic_effect *effects;      /* Allocated effects */
     44     int neffects;               /* Maximum amount of effects */
     45     int nplaying;               /* Maximum amount of effects to play at the same time */
     46     unsigned int supported;     /* Supported effects */
     47     int naxes;                  /* Number of axes on the device. */
     48 
     49     struct haptic_hwdata *hwdata;       /* Driver dependent */
     50     int ref_count;              /* Count for multiple opens */
     51 
     52     int rumble_id;              /* ID of rumble effect for simple rumble API. */
     53     SDL_HapticEffect rumble_effect; /* Rumble effect. */
     54     struct _SDL_Haptic *next; /* pointer to next haptic we have allocated */
     55 };
     56 
     57 /*
     58  * Scans the system for haptic devices.
     59  *
     60  * Returns number of devices on success, -1 on error.
     61  */
     62 extern int SDL_SYS_HapticInit(void);
     63 
     64 /* Function to return the number of haptic devices plugged in right now */
     65 extern int SDL_SYS_NumHaptics(void);
     66 
     67 /*
     68  * Gets the device dependent name of the haptic device
     69  */
     70 extern const char *SDL_SYS_HapticName(int index);
     71 
     72 /*
     73  * Opens the haptic device for usage.  The haptic device should have
     74  * the index value set previously.
     75  *
     76  * Returns 0 on success, -1 on error.
     77  */
     78 extern int SDL_SYS_HapticOpen(SDL_Haptic * haptic);
     79 
     80 /*
     81  * Returns the index of the haptic core pointer or -1 if none is found.
     82  */
     83 int SDL_SYS_HapticMouse(void);
     84 
     85 /*
     86  * Checks to see if the joystick has haptic capabilities.
     87  *
     88  * Returns >0 if haptic capabilities are detected, 0 if haptic
     89  * capabilities aren't detected and -1 on error.
     90  */
     91 extern int SDL_SYS_JoystickIsHaptic(SDL_Joystick * joystick);
     92 
     93 /*
     94  * Opens the haptic device for usage using the same device as
     95  * the joystick.
     96  *
     97  * Returns 0 on success, -1 on error.
     98  */
     99 extern int SDL_SYS_HapticOpenFromJoystick(SDL_Haptic * haptic,
    100                                           SDL_Joystick * joystick);
    101 /*
    102  * Checks to see if haptic device and joystick device are the same.
    103  *
    104  * Returns 1 if they are the same, 0 if they aren't.
    105  */
    106 extern int SDL_SYS_JoystickSameHaptic(SDL_Haptic * haptic,
    107                                       SDL_Joystick * joystick);
    108 
    109 /*
    110  * Closes a haptic device after usage.
    111  */
    112 extern void SDL_SYS_HapticClose(SDL_Haptic * haptic);
    113 
    114 /*
    115  * Performs a cleanup on the haptic subsystem.
    116  */
    117 extern void SDL_SYS_HapticQuit(void);
    118 
    119 /*
    120  * Creates a new haptic effect on the haptic device using base
    121  * as a template for the effect.
    122  *
    123  * Returns 0 on success, -1 on error.
    124  */
    125 extern int SDL_SYS_HapticNewEffect(SDL_Haptic * haptic,
    126                                    struct haptic_effect *effect,
    127                                    SDL_HapticEffect * base);
    128 
    129 /*
    130  * Updates the haptic effect on the haptic device using data
    131  * as a template.
    132  *
    133  * Returns 0 on success, -1 on error.
    134  */
    135 extern int SDL_SYS_HapticUpdateEffect(SDL_Haptic * haptic,
    136                                       struct haptic_effect *effect,
    137                                       SDL_HapticEffect * data);
    138 
    139 /*
    140  * Runs the effect on the haptic device.
    141  *
    142  * Returns 0 on success, -1 on error.
    143  */
    144 extern int SDL_SYS_HapticRunEffect(SDL_Haptic * haptic,
    145                                    struct haptic_effect *effect,
    146                                    Uint32 iterations);
    147 
    148 /*
    149  * Stops the effect on the haptic device.
    150  *
    151  * Returns 0 on success, -1 on error.
    152  */
    153 extern int SDL_SYS_HapticStopEffect(SDL_Haptic * haptic,
    154                                     struct haptic_effect *effect);
    155 
    156 /*
    157  * Cleanups up the effect on the haptic device.
    158  */
    159 extern void SDL_SYS_HapticDestroyEffect(SDL_Haptic * haptic,
    160                                         struct haptic_effect *effect);
    161 
    162 /*
    163  * Queries the device for the status of effect.
    164  *
    165  * Returns 0 if device is stopped, >0 if device is playing and
    166  * -1 on error.
    167  */
    168 extern int SDL_SYS_HapticGetEffectStatus(SDL_Haptic * haptic,
    169                                          struct haptic_effect *effect);
    170 
    171 /*
    172  * Sets the global gain of the haptic device.
    173  *
    174  * Returns 0 on success, -1 on error.
    175  */
    176 extern int SDL_SYS_HapticSetGain(SDL_Haptic * haptic, int gain);
    177 
    178 /*
    179  * Sets the autocenter feature of the haptic device.
    180  *
    181  * Returns 0 on success, -1 on error.
    182  */
    183 extern int SDL_SYS_HapticSetAutocenter(SDL_Haptic * haptic, int autocenter);
    184 
    185 /*
    186  * Pauses the haptic device.
    187  *
    188  * Returns 0 on success, -1 on error.
    189  */
    190 extern int SDL_SYS_HapticPause(SDL_Haptic * haptic);
    191 
    192 /*
    193  * Unpauses the haptic device.
    194  *
    195  * Returns 0 on success, -1 on error.
    196  */
    197 extern int SDL_SYS_HapticUnpause(SDL_Haptic * haptic);
    198 
    199 /*
    200  * Stops all the currently playing haptic effects on the device.
    201  *
    202  * Returns 0 on success, -1 on error.
    203  */
    204 extern int SDL_SYS_HapticStopAll(SDL_Haptic * haptic);
    205 
    206 #endif /* SDL_syshaptic_h_ */
    207 
    208 /* vi: set ts=4 sw=4 expandtab: */