src/joystick/SDL_gamecontroller.c
author Sam Lantinga <slouken@libsdl.org>
Tue, 29 Nov 2016 22:02:37 -0800
changeset 10662 c6756f2a187b
parent 10661 74b42fb2a9e4
child 10688 f910d0498992
permissions -rw-r--r--
Add the controller mappings to the linked list in order
slouken@8582
     1
/*
slouken@8582
     2
  Simple DirectMedia Layer
slouken@9998
     3
  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
slouken@8582
     4
slouken@8582
     5
  This software is provided 'as-is', without any express or implied
slouken@8582
     6
  warranty.  In no event will the authors be held liable for any damages
slouken@8582
     7
  arising from the use of this software.
slouken@8582
     8
slouken@8582
     9
  Permission is granted to anyone to use this software for any purpose,
slouken@8582
    10
  including commercial applications, and to alter it and redistribute it
slouken@8582
    11
  freely, subject to the following restrictions:
slouken@8582
    12
slouken@8582
    13
  1. The origin of this software must not be misrepresented; you must not
slouken@8582
    14
     claim that you wrote the original software. If you use this software
slouken@8582
    15
     in a product, an acknowledgment in the product documentation would be
slouken@8582
    16
     appreciated but is not required.
slouken@8582
    17
  2. Altered source versions must be plainly marked as such, and must not be
slouken@8582
    18
     misrepresented as being the original software.
slouken@8582
    19
  3. This notice may not be removed or altered from any source distribution.
slouken@8582
    20
*/
icculus@8093
    21
#include "../SDL_internal.h"
slouken@8582
    22
slouken@8582
    23
/* This is the game controller API for Simple DirectMedia Layer */
slouken@8582
    24
slouken@8582
    25
#include "SDL_events.h"
slouken@8582
    26
#include "SDL_assert.h"
slouken@8582
    27
#include "SDL_sysjoystick.h"
slouken@8582
    28
#include "SDL_hints.h"
slouken@8582
    29
#include "SDL_gamecontrollerdb.h"
slouken@8582
    30
slouken@8582
    31
#if !SDL_EVENTS_DISABLED
slouken@8582
    32
#include "../events/SDL_events_c.h"
slouken@8582
    33
#endif
slouken@8582
    34
#define ABS(_x) ((_x) < 0 ? -(_x) : (_x))
slouken@8582
    35
gabomdq@8042
    36
#define SDL_CONTROLLER_PLATFORM_FIELD "platform:"
slouken@8582
    37
slouken@8582
    38
/* a list of currently opened game controllers */
slouken@8582
    39
static SDL_GameController *SDL_gamecontrollers = NULL;
slouken@8582
    40
slouken@8582
    41
/* keep track of the hat and mask value that transforms this hat movement into a button/axis press */
slouken@8582
    42
struct _SDL_HatMapping
slouken@8582
    43
{
slouken@8582
    44
    int hat;
slouken@8582
    45
    Uint8 mask;
slouken@8582
    46
};
slouken@8582
    47
slouken@10423
    48
/* We need 36 entries for Android (as of SDL v2.0.4) */
slouken@10423
    49
#define k_nMaxReverseEntries 48
slouken@8582
    50
slouken@8582
    51
/**
slouken@8582
    52
 * We are encoding the "HAT" as 0xhm. where h == hat ID and m == mask
slouken@8582
    53
 * MAX 4 hats supported
slouken@8582
    54
 */
slouken@8582
    55
#define k_nMaxHatEntries 0x3f + 1
slouken@8582
    56
slouken@8582
    57
/* our in memory mapping db between joystick objects and controller mappings */
slouken@8582
    58
struct _SDL_ControllerMapping
slouken@8582
    59
{
slouken@8582
    60
    SDL_JoystickGUID guid;
slouken@8582
    61
    const char *name;
slouken@8582
    62
slouken@8582
    63
    /* mapping of axis/button id to controller version */
slouken@8582
    64
    int axes[SDL_CONTROLLER_AXIS_MAX];
slouken@8582
    65
    int buttonasaxis[SDL_CONTROLLER_AXIS_MAX];
slouken@8582
    66
slouken@8582
    67
    int buttons[SDL_CONTROLLER_BUTTON_MAX];
slouken@8582
    68
    int axesasbutton[SDL_CONTROLLER_BUTTON_MAX];
slouken@8582
    69
    struct _SDL_HatMapping hatasbutton[SDL_CONTROLLER_BUTTON_MAX];
slouken@8582
    70
slouken@8582
    71
    /* reverse mapping, joystick indices to buttons */
slouken@8582
    72
    SDL_GameControllerAxis raxes[k_nMaxReverseEntries];
slouken@8582
    73
    SDL_GameControllerAxis rbuttonasaxis[k_nMaxReverseEntries];
slouken@8582
    74
slouken@8582
    75
    SDL_GameControllerButton rbuttons[k_nMaxReverseEntries];
slouken@8582
    76
    SDL_GameControllerButton raxesasbutton[k_nMaxReverseEntries];
slouken@8582
    77
    SDL_GameControllerButton rhatasbutton[k_nMaxHatEntries];
slouken@8582
    78
slouken@8582
    79
};
slouken@8582
    80
slouken@8582
    81
slouken@8582
    82
/* our hard coded list of mapping support */
slouken@10605
    83
typedef enum
slouken@10605
    84
{
slouken@10605
    85
    SDL_CONTROLLER_MAPPING_PRIORITY_DEFAULT,
slouken@10605
    86
    SDL_CONTROLLER_MAPPING_PRIORITY_API,
slouken@10605
    87
    SDL_CONTROLLER_MAPPING_PRIORITY_USER,
slouken@10605
    88
} SDL_ControllerMappingPriority;
slouken@10605
    89
slouken@8582
    90
typedef struct _ControllerMapping_t
slouken@8582
    91
{
slouken@8582
    92
    SDL_JoystickGUID guid;
slouken@8582
    93
    char *name;
slouken@8582
    94
    char *mapping;
slouken@10605
    95
    SDL_ControllerMappingPriority priority;
slouken@8582
    96
    struct _ControllerMapping_t *next;
slouken@8582
    97
} ControllerMapping_t;
slouken@8582
    98
slouken@10661
    99
static SDL_JoystickGUID s_zeroGUID;
slouken@8582
   100
static ControllerMapping_t *s_pSupportedControllers = NULL;
slouken@8582
   101
static ControllerMapping_t *s_pXInputMapping = NULL;
icculus@9278
   102
static ControllerMapping_t *s_pEmscriptenMapping = NULL;
slouken@8582
   103
slouken@8582
   104
/* The SDL game controller structure */
slouken@8582
   105
struct _SDL_GameController
slouken@8582
   106
{
slouken@8582
   107
    SDL_Joystick *joystick; /* underlying joystick device */
slouken@8582
   108
    int ref_count;
slouken@8582
   109
    Uint8 hatState[4]; /* the current hat state for this controller */
slouken@8582
   110
    struct _SDL_ControllerMapping mapping; /* the mapping object for this controller */
slouken@8582
   111
    struct _SDL_GameController *next; /* pointer to next game controller we have allocated */
slouken@8582
   112
};
slouken@8582
   113
slouken@8582
   114
slouken@8582
   115
int SDL_PrivateGameControllerAxis(SDL_GameController * gamecontroller, SDL_GameControllerAxis axis, Sint16 value);
slouken@8582
   116
int SDL_PrivateGameControllerButton(SDL_GameController * gamecontroller, SDL_GameControllerButton button, Uint8 state);
slouken@8582
   117
slouken@8582
   118
/*
slouken@10226
   119
 * If there is an existing add event in the queue, it needs to be modified
slouken@10226
   120
 * to have the right value for which, because the number of controllers in
slouken@10226
   121
 * the system is now one less.
slouken@10226
   122
 */
slouken@10226
   123
static void UpdateEventsForDeviceRemoval()
slouken@10226
   124
{
slouken@10226
   125
    int i, num_events;
slouken@10226
   126
    SDL_Event *events;
slouken@10226
   127
slouken@10226
   128
    num_events = SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, SDL_CONTROLLERDEVICEADDED, SDL_CONTROLLERDEVICEADDED);
slouken@10226
   129
    if (num_events <= 0) {
slouken@10226
   130
        return;
slouken@10226
   131
    }
slouken@10226
   132
slouken@10226
   133
    events = SDL_stack_alloc(SDL_Event, num_events);
slouken@10226
   134
    if (!events) {
slouken@10226
   135
        return;
slouken@10226
   136
    }
slouken@10226
   137
slouken@10226
   138
    num_events = SDL_PeepEvents(events, num_events, SDL_GETEVENT, SDL_CONTROLLERDEVICEADDED, SDL_CONTROLLERDEVICEADDED);
slouken@10226
   139
    for (i = 0; i < num_events; ++i) {
slouken@10226
   140
        --events[i].cdevice.which;
slouken@10226
   141
    }
slouken@10226
   142
    SDL_PeepEvents(events, num_events, SDL_ADDEVENT, 0, 0);
slouken@10226
   143
slouken@10226
   144
    SDL_stack_free(events);
slouken@10226
   145
}
slouken@10226
   146
slouken@10226
   147
/*
slouken@8582
   148
 * Event filter to fire controller events from joystick ones
slouken@8582
   149
 */
slouken@10609
   150
static int SDL_GameControllerEventWatcher(void *userdata, SDL_Event * event)
slouken@8582
   151
{
slouken@8772
   152
    switch(event->type) {
slouken@8582
   153
    case SDL_JOYAXISMOTION:
slouken@8582
   154
        {
slouken@8582
   155
            SDL_GameController *controllerlist;
slouken@8582
   156
slouken@10495
   157
            if (event->jaxis.axis >= k_nMaxReverseEntries)
slouken@10495
   158
            {
slouken@10495
   159
                SDL_SetError("SDL_GameControllerEventWatcher: Axis index %d too large, ignoring motion", (int)event->jaxis.axis);
slouken@10495
   160
                break;
slouken@10495
   161
            }
slouken@8582
   162
slouken@8582
   163
            controllerlist = SDL_gamecontrollers;
slouken@8772
   164
            while (controllerlist) {
slouken@8772
   165
                if (controllerlist->joystick->instance_id == event->jaxis.which) {
slouken@8772
   166
                    if (controllerlist->mapping.raxes[event->jaxis.axis] >= 0) /* simple axis to axis, send it through */ {
slouken@8582
   167
                        SDL_GameControllerAxis axis = controllerlist->mapping.raxes[event->jaxis.axis];
slouken@8582
   168
                        Sint16 value = event->jaxis.value;
slouken@8772
   169
                        switch (axis) {
slouken@8582
   170
                            case SDL_CONTROLLER_AXIS_TRIGGERLEFT:
slouken@8582
   171
                            case SDL_CONTROLLER_AXIS_TRIGGERRIGHT:
slouken@10477
   172
                                value = value / 2 + 16384;
slouken@10476
   173
                                break;
slouken@8582
   174
                            default:
slouken@8582
   175
                                break;
slouken@8582
   176
                        }
slouken@8772
   177
                        SDL_PrivateGameControllerAxis(controllerlist, axis, value);
slouken@8772
   178
                    } else if (controllerlist->mapping.raxesasbutton[event->jaxis.axis] >= 0) { /* simulate an axis as a button */
slouken@8772
   179
                        SDL_PrivateGameControllerButton(controllerlist, controllerlist->mapping.raxesasbutton[event->jaxis.axis], ABS(event->jaxis.value) > 32768/2 ? SDL_PRESSED : SDL_RELEASED);
slouken@8582
   180
                    }
slouken@8582
   181
                    break;
slouken@8582
   182
                }
slouken@8582
   183
                controllerlist = controllerlist->next;
slouken@8582
   184
            }
slouken@8582
   185
        }
slouken@8582
   186
        break;
slouken@8582
   187
    case SDL_JOYBUTTONDOWN:
slouken@8582
   188
    case SDL_JOYBUTTONUP:
slouken@8582
   189
        {
slouken@8582
   190
            SDL_GameController *controllerlist;
slouken@8582
   191
slouken@10495
   192
            if (event->jbutton.button >= k_nMaxReverseEntries)
slouken@10495
   193
            {
slouken@10495
   194
                SDL_SetError("SDL_GameControllerEventWatcher: Button index %d too large, ignoring update", (int)event->jbutton.button);
slouken@10495
   195
                break;
slouken@10495
   196
            }
slouken@8582
   197
slouken@8582
   198
            controllerlist = SDL_gamecontrollers;
slouken@8772
   199
            while (controllerlist) {
slouken@8772
   200
                if (controllerlist->joystick->instance_id == event->jbutton.which) {
slouken@8772
   201
                    if (controllerlist->mapping.rbuttons[event->jbutton.button] >= 0) { /* simple button as button */
slouken@8772
   202
                        SDL_PrivateGameControllerButton(controllerlist, controllerlist->mapping.rbuttons[event->jbutton.button], event->jbutton.state);
slouken@8772
   203
                    } else if (controllerlist->mapping.rbuttonasaxis[event->jbutton.button] >= 0) { /* an button pretending to be an axis */
slouken@8772
   204
                        SDL_PrivateGameControllerAxis(controllerlist, controllerlist->mapping.rbuttonasaxis[event->jbutton.button], event->jbutton.state > 0 ? 32767 : 0);
slouken@8582
   205
                    }
slouken@8582
   206
                    break;
slouken@8582
   207
                }
slouken@8582
   208
                controllerlist = controllerlist->next;
slouken@8582
   209
            }
slouken@8582
   210
        }
slouken@8582
   211
        break;
slouken@8582
   212
    case SDL_JOYHATMOTION:
slouken@8582
   213
        {
slouken@8582
   214
            SDL_GameController *controllerlist;
slouken@8582
   215
slouken@8772
   216
            if (event->jhat.hat >= 4) break;
slouken@8582
   217
slouken@8582
   218
            controllerlist = SDL_gamecontrollers;
slouken@8772
   219
            while (controllerlist) {
slouken@8772
   220
                if (controllerlist->joystick->instance_id == event->jhat.which) {
slouken@8582
   221
                    Uint8 bSame = controllerlist->hatState[event->jhat.hat] & event->jhat.value;
slouken@8582
   222
                    /* Get list of removed bits (button release) */
slouken@8582
   223
                    Uint8 bChanged = controllerlist->hatState[event->jhat.hat] ^ bSame;
slouken@8582
   224
                    /* the hat idx in the high nibble */
slouken@8582
   225
                    int bHighHat = event->jhat.hat << 4;
slouken@8582
   226
slouken@8772
   227
                    if (bChanged & SDL_HAT_DOWN)
slouken@8772
   228
                        SDL_PrivateGameControllerButton(controllerlist, controllerlist->mapping.rhatasbutton[bHighHat | SDL_HAT_DOWN], SDL_RELEASED);
slouken@8772
   229
                    if (bChanged & SDL_HAT_UP)
slouken@8772
   230
                        SDL_PrivateGameControllerButton(controllerlist, controllerlist->mapping.rhatasbutton[bHighHat | SDL_HAT_UP], SDL_RELEASED);
slouken@8772
   231
                    if (bChanged & SDL_HAT_LEFT)
slouken@8772
   232
                        SDL_PrivateGameControllerButton(controllerlist, controllerlist->mapping.rhatasbutton[bHighHat | SDL_HAT_LEFT], SDL_RELEASED);
slouken@8772
   233
                    if (bChanged & SDL_HAT_RIGHT)
slouken@8772
   234
                        SDL_PrivateGameControllerButton(controllerlist, controllerlist->mapping.rhatasbutton[bHighHat | SDL_HAT_RIGHT], SDL_RELEASED);
slouken@8582
   235
slouken@8582
   236
                    /* Get list of added bits (button press) */
slouken@8582
   237
                    bChanged = event->jhat.value ^ bSame;
slouken@8582
   238
slouken@8772
   239
                    if (bChanged & SDL_HAT_DOWN)
slouken@8772
   240
                        SDL_PrivateGameControllerButton(controllerlist, controllerlist->mapping.rhatasbutton[bHighHat | SDL_HAT_DOWN], SDL_PRESSED);
slouken@8772
   241
                    if (bChanged & SDL_HAT_UP)
slouken@8772
   242
                        SDL_PrivateGameControllerButton(controllerlist, controllerlist->mapping.rhatasbutton[bHighHat | SDL_HAT_UP], SDL_PRESSED);
slouken@8772
   243
                    if (bChanged & SDL_HAT_LEFT)
slouken@8772
   244
                        SDL_PrivateGameControllerButton(controllerlist, controllerlist->mapping.rhatasbutton[bHighHat | SDL_HAT_LEFT], SDL_PRESSED);
slouken@8772
   245
                    if (bChanged & SDL_HAT_RIGHT)
slouken@8772
   246
                        SDL_PrivateGameControllerButton(controllerlist, controllerlist->mapping.rhatasbutton[bHighHat | SDL_HAT_RIGHT], SDL_PRESSED);
slouken@8582
   247
slouken@8582
   248
                    /* update our state cache */
slouken@8582
   249
                    controllerlist->hatState[event->jhat.hat] = event->jhat.value;
slouken@8582
   250
slouken@8582
   251
                    break;
slouken@8582
   252
                }
slouken@8582
   253
                controllerlist = controllerlist->next;
slouken@8582
   254
            }
slouken@8582
   255
        }
slouken@8582
   256
        break;
slouken@8582
   257
    case SDL_JOYDEVICEADDED:
slouken@8582
   258
        {
slouken@8772
   259
            if (SDL_IsGameController(event->jdevice.which)) {
slouken@8582
   260
                SDL_Event deviceevent;
slouken@8582
   261
                deviceevent.type = SDL_CONTROLLERDEVICEADDED;
slouken@8582
   262
                deviceevent.cdevice.which = event->jdevice.which;
slouken@8582
   263
                SDL_PushEvent(&deviceevent);
slouken@8582
   264
            }
slouken@8582
   265
        }
slouken@8582
   266
        break;
slouken@8582
   267
    case SDL_JOYDEVICEREMOVED:
slouken@8582
   268
        {
slouken@8582
   269
            SDL_GameController *controllerlist = SDL_gamecontrollers;
slouken@8772
   270
            while (controllerlist) {
slouken@8772
   271
                if (controllerlist->joystick->instance_id == event->jdevice.which) {
slouken@8582
   272
                    SDL_Event deviceevent;
slouken@10225
   273
slouken@8582
   274
                    deviceevent.type = SDL_CONTROLLERDEVICEREMOVED;
slouken@8582
   275
                    deviceevent.cdevice.which = event->jdevice.which;
slouken@8582
   276
                    SDL_PushEvent(&deviceevent);
slouken@10226
   277
slouken@10226
   278
                    UpdateEventsForDeviceRemoval();
slouken@8582
   279
                    break;
slouken@8582
   280
                }
slouken@8582
   281
                controllerlist = controllerlist->next;
slouken@8582
   282
            }
slouken@8582
   283
        }
slouken@8582
   284
        break;
slouken@8582
   285
    default:
slouken@8582
   286
        break;
slouken@8582
   287
    }
slouken@8582
   288
slouken@8582
   289
    return 1;
slouken@8582
   290
}
slouken@8582
   291
slouken@8582
   292
/*
slouken@8582
   293
 * Helper function to scan the mappings database for a controller with the specified GUID
slouken@8582
   294
 */
slouken@10609
   295
static ControllerMapping_t *SDL_PrivateGetControllerMappingForGUID(SDL_JoystickGUID *guid)
slouken@8582
   296
{
slouken@8582
   297
    ControllerMapping_t *pSupportedController = s_pSupportedControllers;
slouken@8772
   298
    while (pSupportedController) {
slouken@8772
   299
        if (SDL_memcmp(guid, &pSupportedController->guid, sizeof(*guid)) == 0) {
slouken@8582
   300
            return pSupportedController;
slouken@8582
   301
        }
slouken@8582
   302
        pSupportedController = pSupportedController->next;
slouken@8582
   303
    }
slouken@8582
   304
    return NULL;
slouken@8582
   305
}
slouken@8582
   306
slouken@8582
   307
static const char* map_StringForControllerAxis[] = {
slouken@8582
   308
    "leftx",
slouken@8582
   309
    "lefty",
slouken@8582
   310
    "rightx",
slouken@8582
   311
    "righty",
slouken@8582
   312
    "lefttrigger",
slouken@8582
   313
    "righttrigger",
slouken@8582
   314
    NULL
slouken@8582
   315
};
slouken@8582
   316
slouken@8582
   317
/*
slouken@8582
   318
 * convert a string to its enum equivalent
slouken@8582
   319
 */
slouken@8772
   320
SDL_GameControllerAxis SDL_GameControllerGetAxisFromString(const char *pchString)
slouken@8582
   321
{
slouken@8582
   322
    int entry;
slouken@8772
   323
    if (!pchString || !pchString[0])
slouken@8582
   324
        return SDL_CONTROLLER_AXIS_INVALID;
slouken@8582
   325
slouken@8772
   326
    for (entry = 0; map_StringForControllerAxis[entry]; ++entry) {
slouken@8772
   327
        if (!SDL_strcasecmp(pchString, map_StringForControllerAxis[entry]))
slouken@8582
   328
            return entry;
slouken@8582
   329
    }
slouken@8582
   330
    return SDL_CONTROLLER_AXIS_INVALID;
slouken@8582
   331
}
slouken@8582
   332
slouken@8582
   333
/*
slouken@8582
   334
 * convert an enum to its string equivalent
slouken@8582
   335
 */
slouken@8772
   336
const char* SDL_GameControllerGetStringForAxis(SDL_GameControllerAxis axis)
slouken@8582
   337
{
slouken@8772
   338
    if (axis > SDL_CONTROLLER_AXIS_INVALID && axis < SDL_CONTROLLER_AXIS_MAX) {
slouken@8582
   339
        return map_StringForControllerAxis[axis];
slouken@8582
   340
    }
slouken@8582
   341
    return NULL;
slouken@8582
   342
}
slouken@8582
   343
slouken@8582
   344
static const char* map_StringForControllerButton[] = {
slouken@8582
   345
    "a",
slouken@8582
   346
    "b",
slouken@8582
   347
    "x",
slouken@8582
   348
    "y",
slouken@8582
   349
    "back",
slouken@8582
   350
    "guide",
slouken@8582
   351
    "start",
slouken@8582
   352
    "leftstick",
slouken@8582
   353
    "rightstick",
slouken@8582
   354
    "leftshoulder",
slouken@8582
   355
    "rightshoulder",
slouken@8582
   356
    "dpup",
slouken@8582
   357
    "dpdown",
slouken@8582
   358
    "dpleft",
slouken@8582
   359
    "dpright",
slouken@8582
   360
    NULL
slouken@8582
   361
};
slouken@8582
   362
slouken@8582
   363
/*
slouken@8582
   364
 * convert a string to its enum equivalent
slouken@8582
   365
 */
slouken@8772
   366
SDL_GameControllerButton SDL_GameControllerGetButtonFromString(const char *pchString)
slouken@8582
   367
{
slouken@8582
   368
    int entry;
slouken@8772
   369
    if (!pchString || !pchString[0])
slouken@8582
   370
        return SDL_CONTROLLER_BUTTON_INVALID;
slouken@8582
   371
slouken@8772
   372
    for (entry = 0; map_StringForControllerButton[entry]; ++entry) {
slouken@8772
   373
        if (SDL_strcasecmp(pchString, map_StringForControllerButton[entry]) == 0)
slouken@8772
   374
            return entry;
slouken@8582
   375
    }
slouken@8582
   376
    return SDL_CONTROLLER_BUTTON_INVALID;
slouken@8582
   377
}
slouken@8582
   378
slouken@8582
   379
/*
slouken@8582
   380
 * convert an enum to its string equivalent
slouken@8582
   381
 */
slouken@8772
   382
const char* SDL_GameControllerGetStringForButton(SDL_GameControllerButton axis)
slouken@8582
   383
{
slouken@8772
   384
    if (axis > SDL_CONTROLLER_BUTTON_INVALID && axis < SDL_CONTROLLER_BUTTON_MAX) {
slouken@8582
   385
        return map_StringForControllerButton[axis];
slouken@8582
   386
    }
slouken@8582
   387
    return NULL;
slouken@8582
   388
}
slouken@8582
   389
slouken@8582
   390
/*
slouken@8582
   391
 * given a controller button name and a joystick name update our mapping structure with it
slouken@8582
   392
 */
slouken@10609
   393
static void SDL_PrivateGameControllerParseButton(const char *szGameButton, const char *szJoystickButton, struct _SDL_ControllerMapping *pMapping)
slouken@8582
   394
{
slouken@8582
   395
    int iSDLButton = 0;
slouken@8582
   396
    SDL_GameControllerButton button;
slouken@8582
   397
    SDL_GameControllerAxis axis;
slouken@8772
   398
    button = SDL_GameControllerGetButtonFromString(szGameButton);
slouken@8772
   399
    axis = SDL_GameControllerGetAxisFromString(szGameButton);
slouken@8772
   400
    iSDLButton = SDL_atoi(&szJoystickButton[1]);
slouken@8582
   401
slouken@8772
   402
    if (szJoystickButton[0] == 'a') {
slouken@8772
   403
        if (iSDLButton >= k_nMaxReverseEntries) {
slouken@8772
   404
            SDL_SetError("Axis index too large: %d", iSDLButton);
slouken@8582
   405
            return;
slouken@8582
   406
        }
slouken@8772
   407
        if (axis != SDL_CONTROLLER_AXIS_INVALID) {
slouken@10602
   408
            pMapping->axes[axis] = iSDLButton;
slouken@10602
   409
            pMapping->raxes[iSDLButton] = axis;
slouken@8772
   410
        } else if (button != SDL_CONTROLLER_BUTTON_INVALID) {
slouken@10602
   411
            pMapping->axesasbutton[button] = iSDLButton;
slouken@10602
   412
            pMapping->raxesasbutton[iSDLButton] = button;
slouken@8772
   413
        } else {
slouken@8772
   414
            SDL_assert(!"How did we get here?");
slouken@8582
   415
        }
slouken@8582
   416
slouken@8772
   417
    } else if (szJoystickButton[0] == 'b') {
slouken@8772
   418
        if (iSDLButton >= k_nMaxReverseEntries) {
slouken@8772
   419
            SDL_SetError("Button index too large: %d", iSDLButton);
slouken@8582
   420
            return;
slouken@8582
   421
        }
slouken@8772
   422
        if (button != SDL_CONTROLLER_BUTTON_INVALID) {
slouken@10602
   423
            pMapping->buttons[button] = iSDLButton;
slouken@10602
   424
            pMapping->rbuttons[iSDLButton] = button;
slouken@8772
   425
        } else if (axis != SDL_CONTROLLER_AXIS_INVALID) {
slouken@10602
   426
            pMapping->buttonasaxis[axis] = iSDLButton;
slouken@10602
   427
            pMapping->rbuttonasaxis[iSDLButton] = axis;
slouken@8772
   428
        } else {
slouken@8772
   429
            SDL_assert(!"How did we get here?");
slouken@8582
   430
        }
slouken@8772
   431
    } else if (szJoystickButton[0] == 'h') {
slouken@8772
   432
        int hat = SDL_atoi(&szJoystickButton[1]);
slouken@8772
   433
        int mask = SDL_atoi(&szJoystickButton[3]);
slouken@8582
   434
        if (hat >= 4) {
slouken@8772
   435
            SDL_SetError("Hat index too large: %d", iSDLButton);
slouken@8582
   436
        }
slouken@8582
   437
slouken@8772
   438
        if (button != SDL_CONTROLLER_BUTTON_INVALID) {
slouken@8582
   439
            int ridx;
slouken@10602
   440
            pMapping->hatasbutton[button].hat = hat;
slouken@10602
   441
            pMapping->hatasbutton[button].mask = mask;
slouken@8582
   442
            ridx = (hat << 4) | mask;
slouken@10602
   443
            pMapping->rhatasbutton[ridx] = button;
slouken@8772
   444
        } else if (axis != SDL_CONTROLLER_AXIS_INVALID) {
slouken@8772
   445
            SDL_assert(!"Support hat as axis");
slouken@8772
   446
        } else {
slouken@8772
   447
            SDL_assert(!"How did we get here?");
slouken@8582
   448
        }
slouken@8582
   449
    }
slouken@8582
   450
}
slouken@8582
   451
slouken@8582
   452
slouken@8582
   453
/*
slouken@8582
   454
 * given a controller mapping string update our mapping object
slouken@8582
   455
 */
slouken@8582
   456
static void
slouken@8772
   457
SDL_PrivateGameControllerParseControllerConfigString(struct _SDL_ControllerMapping *pMapping, const char *pchString)
slouken@8582
   458
{
slouken@8582
   459
    char szGameButton[20];
slouken@8582
   460
    char szJoystickButton[20];
slouken@8582
   461
    SDL_bool bGameButton = SDL_TRUE;
slouken@8582
   462
    int i = 0;
slouken@8582
   463
    const char *pchPos = pchString;
slouken@8582
   464
slouken@8772
   465
    SDL_memset(szGameButton, 0x0, sizeof(szGameButton));
slouken@8772
   466
    SDL_memset(szJoystickButton, 0x0, sizeof(szJoystickButton));
slouken@8582
   467
slouken@8772
   468
    while (pchPos && *pchPos) {
slouken@8772
   469
        if (*pchPos == ':') {
slouken@8582
   470
            i = 0;
slouken@8582
   471
            bGameButton = SDL_FALSE;
slouken@8772
   472
        } else if (*pchPos == ' ') {
slouken@8582
   473
slouken@8772
   474
        } else if (*pchPos == ',') {
slouken@8582
   475
            i = 0;
slouken@8582
   476
            bGameButton = SDL_TRUE;
slouken@8772
   477
            SDL_PrivateGameControllerParseButton(szGameButton, szJoystickButton, pMapping);
slouken@8772
   478
            SDL_memset(szGameButton, 0x0, sizeof(szGameButton));
slouken@8772
   479
            SDL_memset(szJoystickButton, 0x0, sizeof(szJoystickButton));
slouken@8582
   480
slouken@8772
   481
        } else if (bGameButton) {
slouken@8772
   482
            if (i >= sizeof(szGameButton)) {
slouken@8772
   483
                SDL_SetError("Button name too large: %s", szGameButton);
slouken@8582
   484
                return;
slouken@8582
   485
            }
slouken@8582
   486
            szGameButton[i] = *pchPos;
slouken@8582
   487
            i++;
slouken@8772
   488
        } else {
slouken@8772
   489
            if (i >= sizeof(szJoystickButton)) {
slouken@8772
   490
                SDL_SetError("Joystick button name too large: %s", szJoystickButton);
slouken@8582
   491
                return;
slouken@8582
   492
            }
slouken@8582
   493
            szJoystickButton[i] = *pchPos;
slouken@8582
   494
            i++;
slouken@8582
   495
        }
slouken@8582
   496
        pchPos++;
slouken@8582
   497
    }
slouken@8582
   498
slouken@8772
   499
    SDL_PrivateGameControllerParseButton(szGameButton, szJoystickButton, pMapping);
slouken@8582
   500
slouken@8582
   501
}
slouken@8582
   502
slouken@8582
   503
/*
slouken@8582
   504
 * Make a new button mapping struct
slouken@8582
   505
 */
slouken@10609
   506
static void SDL_PrivateLoadButtonMapping(struct _SDL_ControllerMapping *pMapping, SDL_JoystickGUID guid, const char *pchName, const char *pchMapping)
slouken@8582
   507
{
slouken@8582
   508
    int j;
slouken@8582
   509
slouken@8582
   510
    pMapping->guid = guid;
slouken@8582
   511
    pMapping->name = pchName;
slouken@8582
   512
slouken@8582
   513
    /* set all the button mappings to non defaults */
slouken@8772
   514
    for (j = 0; j < SDL_CONTROLLER_AXIS_MAX; j++) {
slouken@8582
   515
        pMapping->axes[j] = -1;
slouken@8582
   516
        pMapping->buttonasaxis[j] = -1;
slouken@8582
   517
    }
slouken@8772
   518
    for (j = 0; j < SDL_CONTROLLER_BUTTON_MAX; j++) {
slouken@8582
   519
        pMapping->buttons[j] = -1;
slouken@8582
   520
        pMapping->axesasbutton[j] = -1;
slouken@8582
   521
        pMapping->hatasbutton[j].hat = -1;
slouken@8582
   522
    }
slouken@8582
   523
slouken@8772
   524
    for (j = 0; j < k_nMaxReverseEntries; j++) {
slouken@8582
   525
        pMapping->raxes[j] = SDL_CONTROLLER_AXIS_INVALID;
slouken@8582
   526
        pMapping->rbuttonasaxis[j] = SDL_CONTROLLER_AXIS_INVALID;
slouken@8582
   527
        pMapping->rbuttons[j] = SDL_CONTROLLER_BUTTON_INVALID;
slouken@8582
   528
        pMapping->raxesasbutton[j] = SDL_CONTROLLER_BUTTON_INVALID;
slouken@8582
   529
    }
slouken@8582
   530
slouken@8772
   531
    for (j = 0; j < k_nMaxHatEntries; j++) {
slouken@8582
   532
        pMapping->rhatasbutton[j] = SDL_CONTROLLER_BUTTON_INVALID;
slouken@8582
   533
    }
slouken@8582
   534
slouken@8772
   535
    SDL_PrivateGameControllerParseControllerConfigString(pMapping, pchMapping);
slouken@8582
   536
}
slouken@8582
   537
slouken@8582
   538
slouken@8582
   539
/*
slouken@8582
   540
 * grab the guid string from a mapping string
slouken@8582
   541
 */
slouken@10609
   542
static char *SDL_PrivateGetControllerGUIDFromMappingString(const char *pMapping)
slouken@8582
   543
{
slouken@8772
   544
    const char *pFirstComma = SDL_strchr(pMapping, ',');
slouken@8772
   545
    if (pFirstComma) {
slouken@8772
   546
        char *pchGUID = SDL_malloc(pFirstComma - pMapping + 1);
slouken@8772
   547
        if (!pchGUID) {
slouken@8582
   548
            SDL_OutOfMemory();
slouken@8582
   549
            return NULL;
slouken@8582
   550
        }
slouken@8772
   551
        SDL_memcpy(pchGUID, pMapping, pFirstComma - pMapping);
slouken@10602
   552
        pchGUID[pFirstComma - pMapping] = '\0';
slouken@10602
   553
slouken@10602
   554
        /* Convert old style GUIDs to the new style in 2.0.5 */
slouken@10602
   555
#if __WIN32__
slouken@10602
   556
        if (SDL_strlen(pchGUID) == 32 &&
slouken@10602
   557
            SDL_memcmp(&pchGUID[20], "504944564944", 12) == 0) {
slouken@10602
   558
            SDL_memcpy(&pchGUID[20], "000000000000", 12);
slouken@10602
   559
            SDL_memcpy(&pchGUID[16], &pchGUID[4], 4);
slouken@10602
   560
            SDL_memcpy(&pchGUID[8], &pchGUID[0], 4);
slouken@10602
   561
            SDL_memcpy(&pchGUID[0], "03000000", 8);
slouken@10602
   562
        }
slouken@10602
   563
#elif __MACOSX__
slouken@10602
   564
        if (SDL_strlen(pchGUID) == 32 &&
slouken@10602
   565
            SDL_memcmp(&pchGUID[4], "000000000000", 12) == 0 &&
slouken@10602
   566
            SDL_memcmp(&pchGUID[20], "000000000000", 12) == 0) {
slouken@10602
   567
            SDL_memcpy(&pchGUID[20], "000000000000", 12);
slouken@10602
   568
            SDL_memcpy(&pchGUID[8], &pchGUID[0], 4);
slouken@10602
   569
            SDL_memcpy(&pchGUID[0], "03000000", 8);
slouken@10602
   570
        }
slouken@10602
   571
#endif
slouken@8582
   572
        return pchGUID;
slouken@8582
   573
    }
slouken@8582
   574
    return NULL;
slouken@8582
   575
}
slouken@8582
   576
slouken@8582
   577
slouken@8582
   578
/*
slouken@8582
   579
 * grab the name string from a mapping string
slouken@8582
   580
 */
slouken@10609
   581
static char *SDL_PrivateGetControllerNameFromMappingString(const char *pMapping)
slouken@8582
   582
{
slouken@8582
   583
    const char *pFirstComma, *pSecondComma;
slouken@8582
   584
    char *pchName;
slouken@8582
   585
slouken@8772
   586
    pFirstComma = SDL_strchr(pMapping, ',');
slouken@8772
   587
    if (!pFirstComma)
slouken@8582
   588
        return NULL;
slouken@8582
   589
slouken@8772
   590
    pSecondComma = SDL_strchr(pFirstComma + 1, ',');
slouken@8772
   591
    if (!pSecondComma)
slouken@8582
   592
        return NULL;
slouken@8582
   593
slouken@8772
   594
    pchName = SDL_malloc(pSecondComma - pFirstComma);
slouken@8772
   595
    if (!pchName) {
slouken@8582
   596
        SDL_OutOfMemory();
slouken@8582
   597
        return NULL;
slouken@8582
   598
    }
slouken@8772
   599
    SDL_memcpy(pchName, pFirstComma + 1, pSecondComma - pFirstComma);
slouken@10602
   600
    pchName[pSecondComma - pFirstComma - 1] = 0;
slouken@8582
   601
    return pchName;
slouken@8582
   602
}
slouken@8582
   603
slouken@8582
   604
slouken@8582
   605
/*
slouken@8582
   606
 * grab the button mapping string from a mapping string
slouken@8582
   607
 */
slouken@10609
   608
static char *SDL_PrivateGetControllerMappingFromMappingString(const char *pMapping)
slouken@8582
   609
{
slouken@8582
   610
    const char *pFirstComma, *pSecondComma;
slouken@8582
   611
slouken@8772
   612
    pFirstComma = SDL_strchr(pMapping, ',');
slouken@8772
   613
    if (!pFirstComma)
slouken@8582
   614
        return NULL;
slouken@8582
   615
slouken@8772
   616
    pSecondComma = SDL_strchr(pFirstComma + 1, ',');
slouken@8772
   617
    if (!pSecondComma)
slouken@8582
   618
        return NULL;
slouken@8582
   619
slouken@8582
   620
    return SDL_strdup(pSecondComma + 1); /* mapping is everything after the 3rd comma */
slouken@8582
   621
}
slouken@8582
   622
slouken@9956
   623
/*
slouken@9956
   624
 * Helper function to refresh a mapping
slouken@9956
   625
 */
slouken@10609
   626
static void SDL_PrivateGameControllerRefreshMapping(ControllerMapping_t *pControllerMapping)
slouken@8582
   627
{
slouken@8582
   628
    SDL_GameController *gamecontrollerlist = SDL_gamecontrollers;
slouken@8772
   629
    while (gamecontrollerlist) {
slouken@8772
   630
        if (!SDL_memcmp(&gamecontrollerlist->mapping.guid, &pControllerMapping->guid, sizeof(pControllerMapping->guid))) {
slouken@8582
   631
            SDL_Event event;
slouken@8582
   632
            event.type = SDL_CONTROLLERDEVICEREMAPPED;
slouken@8582
   633
            event.cdevice.which = gamecontrollerlist->joystick->instance_id;
slouken@8582
   634
            SDL_PushEvent(&event);
slouken@8582
   635
slouken@8582
   636
            /* Not really threadsafe.  Should this lock access within SDL_GameControllerEventWatcher? */
slouken@8582
   637
            SDL_PrivateLoadButtonMapping(&gamecontrollerlist->mapping, pControllerMapping->guid, pControllerMapping->name, pControllerMapping->mapping);
slouken@8582
   638
        }
slouken@8582
   639
slouken@8582
   640
        gamecontrollerlist = gamecontrollerlist->next;
slouken@8582
   641
    }
slouken@8582
   642
}
slouken@8582
   643
slouken@8582
   644
/*
slouken@9956
   645
 * Helper function to add a mapping for a guid
slouken@9956
   646
 */
slouken@9956
   647
static ControllerMapping_t *
slouken@10605
   648
SDL_PrivateAddMappingForGUID(SDL_JoystickGUID jGUID, const char *mappingString, SDL_bool *existing, SDL_ControllerMappingPriority priority)
slouken@9956
   649
{
slouken@9956
   650
    char *pchName;
slouken@9956
   651
    char *pchMapping;
slouken@9956
   652
    ControllerMapping_t *pControllerMapping;
slouken@9956
   653
slouken@9956
   654
    pchName = SDL_PrivateGetControllerNameFromMappingString(mappingString);
slouken@9956
   655
    if (!pchName) {
slouken@9956
   656
        SDL_SetError("Couldn't parse name from %s", mappingString);
slouken@9956
   657
        return NULL;
slouken@9956
   658
    }
slouken@9956
   659
slouken@9956
   660
    pchMapping = SDL_PrivateGetControllerMappingFromMappingString(mappingString);
slouken@9956
   661
    if (!pchMapping) {
slouken@9956
   662
        SDL_free(pchName);
slouken@9956
   663
        SDL_SetError("Couldn't parse %s", mappingString);
slouken@9956
   664
        return NULL;
slouken@9956
   665
    }
slouken@9956
   666
slouken@9956
   667
    pControllerMapping = SDL_PrivateGetControllerMappingForGUID(&jGUID);
slouken@9956
   668
    if (pControllerMapping) {
slouken@10605
   669
        /* Only overwrite the mapping if the priority is the same or higher. */
slouken@10605
   670
        if (pControllerMapping->priority <= priority) {
slouken@10605
   671
            /* Update existing mapping */
slouken@10605
   672
            SDL_free(pControllerMapping->name);
slouken@10605
   673
            pControllerMapping->name = pchName;
slouken@10605
   674
            SDL_free(pControllerMapping->mapping);
slouken@10605
   675
            pControllerMapping->mapping = pchMapping;
slouken@10605
   676
            pControllerMapping->priority = priority;
slouken@10605
   677
            /* refresh open controllers */
slouken@10605
   678
            SDL_PrivateGameControllerRefreshMapping(pControllerMapping);
philipp@10632
   679
        } else {
philipp@10632
   680
            SDL_free(pchName);
philipp@10632
   681
            SDL_free(pchMapping);
slouken@10605
   682
        }
slouken@9956
   683
        *existing = SDL_TRUE;
slouken@9956
   684
    } else {
slouken@9956
   685
        pControllerMapping = SDL_malloc(sizeof(*pControllerMapping));
slouken@9956
   686
        if (!pControllerMapping) {
slouken@9956
   687
            SDL_free(pchName);
slouken@9956
   688
            SDL_free(pchMapping);
slouken@9956
   689
            SDL_OutOfMemory();
slouken@9956
   690
            return NULL;
slouken@9956
   691
        }
slouken@9956
   692
        pControllerMapping->guid = jGUID;
slouken@9956
   693
        pControllerMapping->name = pchName;
slouken@9956
   694
        pControllerMapping->mapping = pchMapping;
slouken@10662
   695
        pControllerMapping->next = NULL;
slouken@10605
   696
        pControllerMapping->priority = priority;
slouken@10662
   697
slouken@10662
   698
        if (s_pSupportedControllers) {
slouken@10662
   699
            /* Add the mapping to the end of the list */
slouken@10662
   700
            ControllerMapping_t *pCurrMapping, *pPrevMapping;
slouken@10662
   701
slouken@10662
   702
            for ( pPrevMapping = s_pSupportedControllers, pCurrMapping = pPrevMapping->next;
slouken@10662
   703
                  pCurrMapping; 
slouken@10662
   704
                  pPrevMapping = pCurrMapping, pCurrMapping = pCurrMapping->next ) {
slouken@10662
   705
                continue;
slouken@10662
   706
            }
slouken@10662
   707
            pPrevMapping->next = pControllerMapping;
slouken@10662
   708
        } else {
slouken@10662
   709
            s_pSupportedControllers = pControllerMapping;
slouken@10662
   710
        }
slouken@9956
   711
        *existing = SDL_FALSE;
slouken@9956
   712
    }
slouken@9956
   713
    return pControllerMapping;
slouken@9956
   714
}
slouken@9956
   715
slouken@9956
   716
/*
slouken@9956
   717
 * Helper function to determine pre-calculated offset to certain joystick mappings
slouken@9956
   718
 */
slouken@10609
   719
static ControllerMapping_t *SDL_PrivateGetControllerMapping(int device_index)
slouken@9956
   720
{
slouken@9956
   721
    SDL_JoystickGUID jGUID = SDL_JoystickGetDeviceGUID(device_index);
slouken@9956
   722
    ControllerMapping_t *mapping;
slouken@9956
   723
slouken@9956
   724
    mapping = SDL_PrivateGetControllerMappingForGUID(&jGUID);
slouken@9956
   725
#if SDL_JOYSTICK_XINPUT
slouken@9956
   726
    if (!mapping && SDL_SYS_IsXInputGamepad_DeviceIndex(device_index)) {
slouken@9956
   727
        mapping = s_pXInputMapping;
slouken@9956
   728
    }
slouken@9956
   729
#endif
slouken@9956
   730
#if defined(SDL_JOYSTICK_EMSCRIPTEN)
slouken@9956
   731
    if (!mapping && s_pEmscriptenMapping) {
slouken@9956
   732
        mapping = s_pEmscriptenMapping;
slouken@9956
   733
    }
slouken@9956
   734
#endif
slouken@9956
   735
#ifdef __LINUX__
slouken@9956
   736
    if (!mapping) {
slouken@9956
   737
        const char *name = SDL_JoystickNameForIndex(device_index);
slouken@9956
   738
        if (name) {
slouken@9956
   739
            if (SDL_strstr(name, "Xbox 360 Wireless Receiver")) {
slouken@9956
   740
                /* The Linux driver xpad.c maps the wireless dpad to buttons */
slouken@9956
   741
                SDL_bool existing;
slouken@9956
   742
                mapping = SDL_PrivateAddMappingForGUID(jGUID,
slouken@9956
   743
"none,X360 Wireless Controller,a:b0,b:b1,back:b6,dpdown:b14,dpleft:b11,dpright:b12,dpup:b13,guide:b8,leftshoulder:b4,leftstick:b9,lefttrigger:a2,leftx:a0,lefty:a1,rightshoulder:b5,rightstick:b10,righttrigger:a5,rightx:a3,righty:a4,start:b7,x:b2,y:b3,",
slouken@10605
   744
                              &existing, SDL_CONTROLLER_MAPPING_PRIORITY_DEFAULT);
slouken@9956
   745
            }
slouken@9956
   746
        }
slouken@9956
   747
    }
slouken@9956
   748
#endif /* __LINUX__ */
slouken@9956
   749
slouken@9956
   750
    if (!mapping) {
slouken@9956
   751
        const char *name = SDL_JoystickNameForIndex(device_index);
slouken@9956
   752
        if (name) {
slouken@9956
   753
            if (SDL_strstr(name, "Xbox") || SDL_strstr(name, "X-Box")) {
slouken@9956
   754
                mapping = s_pXInputMapping;
slouken@9956
   755
            }
slouken@9956
   756
        }
slouken@9956
   757
    }
slouken@9956
   758
    return mapping;
slouken@9956
   759
}
slouken@9956
   760
slouken@9956
   761
/*
slouken@8582
   762
 * Add or update an entry into the Mappings Database
slouken@8582
   763
 */
slouken@8582
   764
int
slouken@8772
   765
SDL_GameControllerAddMappingsFromRW(SDL_RWops * rw, int freerw)
gabomdq@8042
   766
{
gabomdq@8042
   767
    const char *platform = SDL_GetPlatform();
gabomdq@8042
   768
    int controllers = 0;
gabomdq@8042
   769
    char *buf, *line, *line_end, *tmp, *comma, line_platform[64];
gabomdq@8042
   770
    size_t db_size, platform_len;
gabomdq@8042
   771
    
gabomdq@8042
   772
    if (rw == NULL) {
gabomdq@8046
   773
        return SDL_SetError("Invalid RWops");
gabomdq@8042
   774
    }
slouken@8052
   775
    db_size = (size_t)SDL_RWsize(rw);
gabomdq@8042
   776
    
slouken@8052
   777
    buf = (char *)SDL_malloc(db_size + 1);
gabomdq@8042
   778
    if (buf == NULL) {
gabomdq@8046
   779
        if (freerw) {
gabomdq@8046
   780
            SDL_RWclose(rw);
gabomdq@8046
   781
        }
philipp@9194
   782
        return SDL_SetError("Could not allocate space to read DB into memory");
gabomdq@8042
   783
    }
gabomdq@8042
   784
    
gabomdq@8042
   785
    if (SDL_RWread(rw, buf, db_size, 1) != 1) {
gabomdq@8046
   786
        if (freerw) {
gabomdq@8046
   787
            SDL_RWclose(rw);
gabomdq@8046
   788
        }
gabomdq@8042
   789
        SDL_free(buf);
gabomdq@8042
   790
        return SDL_SetError("Could not read DB");
gabomdq@8042
   791
    }
gabomdq@8046
   792
    
gabomdq@8046
   793
    if (freerw) {
gabomdq@8046
   794
        SDL_RWclose(rw);
gabomdq@8046
   795
    }
gabomdq@8042
   796
    
gabomdq@8042
   797
    buf[db_size] = '\0';
gabomdq@8042
   798
    line = buf;
gabomdq@8042
   799
    
gabomdq@8042
   800
    while (line < buf + db_size) {
slouken@8772
   801
        line_end = SDL_strchr(line, '\n');
gabomdq@8042
   802
        if (line_end != NULL) {
gabomdq@8042
   803
            *line_end = '\0';
slouken@8772
   804
        } else {
gabomdq@8042
   805
            line_end = buf + db_size;
gabomdq@8042
   806
        }
gabomdq@8042
   807
        
gabomdq@8042
   808
        /* Extract and verify the platform */
gabomdq@8042
   809
        tmp = SDL_strstr(line, SDL_CONTROLLER_PLATFORM_FIELD);
slouken@8772
   810
        if (tmp != NULL) {
gabomdq@8042
   811
            tmp += SDL_strlen(SDL_CONTROLLER_PLATFORM_FIELD);
gabomdq@8042
   812
            comma = SDL_strchr(tmp, ',');
gabomdq@8042
   813
            if (comma != NULL) {
gabomdq@8042
   814
                platform_len = comma - tmp + 1;
gabomdq@8042
   815
                if (platform_len + 1 < SDL_arraysize(line_platform)) {
gabomdq@8042
   816
                    SDL_strlcpy(line_platform, tmp, platform_len);
slouken@8772
   817
                    if (SDL_strncasecmp(line_platform, platform, platform_len) == 0 &&
slouken@8772
   818
                        SDL_GameControllerAddMapping(line) > 0) {
gabomdq@8042
   819
                        controllers++;
gabomdq@8042
   820
                    }
gabomdq@8042
   821
                }
gabomdq@8042
   822
            }
gabomdq@8042
   823
        }
gabomdq@8042
   824
        
gabomdq@8042
   825
        line = line_end + 1;
gabomdq@8042
   826
    }
gabomdq@8042
   827
gabomdq@8042
   828
    SDL_free(buf);
gabomdq@8042
   829
    return controllers;
gabomdq@8042
   830
}
gabomdq@8042
   831
gabomdq@8042
   832
/*
slouken@10605
   833
 * Add or update an entry into the Mappings Database with a priority
gabomdq@8042
   834
 */
slouken@10605
   835
static int
slouken@10605
   836
SDL_PrivateGameControllerAddMapping(const char *mappingString, SDL_ControllerMappingPriority priority)
slouken@8582
   837
{
slouken@8582
   838
    char *pchGUID;
slouken@8582
   839
    SDL_JoystickGUID jGUID;
slouken@8582
   840
    SDL_bool is_xinput_mapping = SDL_FALSE;
icculus@9278
   841
    SDL_bool is_emscripten_mapping = SDL_FALSE;
slouken@9956
   842
    SDL_bool existing = SDL_FALSE;
slouken@9956
   843
    ControllerMapping_t *pControllerMapping;
slouken@8582
   844
philipp@9198
   845
    if (!mappingString) {
philipp@9198
   846
        return SDL_InvalidParamError("mappingString");
philipp@9198
   847
    }
philipp@9198
   848
slouken@8772
   849
    pchGUID = SDL_PrivateGetControllerGUIDFromMappingString(mappingString);
slouken@8582
   850
    if (!pchGUID) {
philipp@8081
   851
        return SDL_SetError("Couldn't parse GUID from %s", mappingString);
slouken@8582
   852
    }
slouken@8772
   853
    if (!SDL_strcasecmp(pchGUID, "xinput")) {
slouken@8582
   854
        is_xinput_mapping = SDL_TRUE;
slouken@8582
   855
    }
icculus@9278
   856
    if (!SDL_strcasecmp(pchGUID, "emscripten")) {
icculus@9278
   857
        is_emscripten_mapping = SDL_TRUE;
icculus@9278
   858
    }
slouken@8582
   859
    jGUID = SDL_JoystickGetGUIDFromString(pchGUID);
slouken@8582
   860
    SDL_free(pchGUID);
slouken@8582
   861
slouken@10605
   862
    pControllerMapping = SDL_PrivateAddMappingForGUID(jGUID, mappingString, &existing, priority);
slouken@9956
   863
    if (!pControllerMapping) {
slouken@9956
   864
        return -1;
slouken@8053
   865
    }
slouken@8582
   866
slouken@9956
   867
    if (existing) {
slouken@8582
   868
        return 0;
slouken@8582
   869
    } else {
slouken@8772
   870
        if (is_xinput_mapping) {
slouken@8582
   871
            s_pXInputMapping = pControllerMapping;
slouken@8582
   872
        }
icculus@9278
   873
        if (is_emscripten_mapping) {
icculus@9278
   874
            s_pEmscriptenMapping = pControllerMapping;
icculus@9278
   875
        }
slouken@8582
   876
        return 1;
slouken@8582
   877
    }
slouken@8582
   878
}
slouken@8582
   879
slouken@8582
   880
/*
slouken@10605
   881
 * Add or update an entry into the Mappings Database
slouken@10605
   882
 */
slouken@10605
   883
int
slouken@10605
   884
SDL_GameControllerAddMapping(const char *mappingString)
slouken@10605
   885
{
slouken@10605
   886
    return SDL_PrivateGameControllerAddMapping(mappingString, SDL_CONTROLLER_MAPPING_PRIORITY_API);
slouken@10605
   887
}
slouken@10605
   888
slouken@10661
   889
/**
slouken@10661
   890
 *  Get the number of mappings installed
slouken@10661
   891
 */
slouken@10661
   892
int
slouken@10661
   893
SDL_GameControllerNumMappings()
slouken@10661
   894
{
slouken@10661
   895
    int num_mappings = 0;
slouken@10661
   896
    ControllerMapping_t *mapping;
slouken@10661
   897
slouken@10661
   898
    for (mapping = s_pSupportedControllers; mapping; mapping = mapping->next) {
slouken@10661
   899
        if (SDL_memcmp(&mapping->guid, &s_zeroGUID, sizeof(mapping->guid)) == 0) {
slouken@10661
   900
            continue;
slouken@10661
   901
        }
slouken@10661
   902
        ++num_mappings;
slouken@10661
   903
    }
slouken@10661
   904
    return num_mappings;
slouken@10661
   905
}
slouken@10661
   906
slouken@10661
   907
/**
slouken@10661
   908
 *  Get the mapping at a particular index.
slouken@10661
   909
 */
slouken@10661
   910
char *
slouken@10661
   911
SDL_GameControllerMappingForIndex(int mapping_index)
slouken@10661
   912
{
slouken@10661
   913
    ControllerMapping_t *mapping;
slouken@10661
   914
slouken@10661
   915
    for (mapping = s_pSupportedControllers; mapping; mapping = mapping->next) {
slouken@10661
   916
        if (SDL_memcmp(&mapping->guid, &s_zeroGUID, sizeof(mapping->guid)) == 0) {
slouken@10661
   917
            continue;
slouken@10661
   918
        }
slouken@10661
   919
        if (mapping_index == 0) {
slouken@10661
   920
            char *pMappingString;
slouken@10661
   921
            char pchGUID[33];
slouken@10661
   922
            size_t needed;
slouken@10661
   923
slouken@10661
   924
            SDL_JoystickGetGUIDString(mapping->guid, pchGUID, sizeof(pchGUID));
slouken@10661
   925
            /* allocate enough memory for GUID + ',' + name + ',' + mapping + \0 */
slouken@10661
   926
            needed = SDL_strlen(pchGUID) + 1 + SDL_strlen(mapping->name) + 1 + SDL_strlen(mapping->mapping) + 1;
slouken@10661
   927
            pMappingString = SDL_malloc(needed);
slouken@10661
   928
            if (!pMappingString) {
slouken@10661
   929
                SDL_OutOfMemory();
slouken@10661
   930
                return NULL;
slouken@10661
   931
            }
slouken@10661
   932
            SDL_snprintf(pMappingString, needed, "%s,%s,%s", pchGUID, mapping->name, mapping->mapping);
slouken@10661
   933
            return pMappingString;
slouken@10661
   934
        }
slouken@10661
   935
        --mapping_index;
slouken@10661
   936
    }
slouken@10661
   937
    return NULL;
slouken@10661
   938
}
slouken@10661
   939
slouken@10605
   940
/*
slouken@8582
   941
 * Get the mapping string for this GUID
slouken@8582
   942
 */
slouken@8582
   943
char *
slouken@8772
   944
SDL_GameControllerMappingForGUID(SDL_JoystickGUID guid)
slouken@8582
   945
{
slouken@8582
   946
    char *pMappingString = NULL;
slouken@8582
   947
    ControllerMapping_t *mapping = SDL_PrivateGetControllerMappingForGUID(&guid);
slouken@8582
   948
    if (mapping) {
slouken@8582
   949
        char pchGUID[33];
slouken@8582
   950
        size_t needed;
slouken@8582
   951
        SDL_JoystickGetGUIDString(guid, pchGUID, sizeof(pchGUID));
slouken@8582
   952
        /* allocate enough memory for GUID + ',' + name + ',' + mapping + \0 */
slouken@8582
   953
        needed = SDL_strlen(pchGUID) + 1 + SDL_strlen(mapping->name) + 1 + SDL_strlen(mapping->mapping) + 1;
slouken@8772
   954
        pMappingString = SDL_malloc(needed);
philipp@9197
   955
        if (!pMappingString) {
philipp@9197
   956
            SDL_OutOfMemory();
philipp@9197
   957
            return NULL;
philipp@9197
   958
        }
slouken@8772
   959
        SDL_snprintf(pMappingString, needed, "%s,%s,%s", pchGUID, mapping->name, mapping->mapping);
slouken@8582
   960
    }
slouken@8582
   961
    return pMappingString;
slouken@8582
   962
}
slouken@8582
   963
slouken@8582
   964
/*
slouken@8582
   965
 * Get the mapping string for this device
slouken@8582
   966
 */
slouken@8582
   967
char *
slouken@8772
   968
SDL_GameControllerMapping(SDL_GameController * gamecontroller)
slouken@8582
   969
{
philipp@9196
   970
    if (!gamecontroller) {
philipp@9196
   971
        return NULL;
philipp@9196
   972
    }
philipp@9196
   973
slouken@8772
   974
    return SDL_GameControllerMappingForGUID(gamecontroller->mapping.guid);
slouken@8582
   975
}
slouken@8582
   976
slouken@8582
   977
static void
slouken@8582
   978
SDL_GameControllerLoadHints()
slouken@8582
   979
{
slouken@8582
   980
    const char *hint = SDL_GetHint(SDL_HINT_GAMECONTROLLERCONFIG);
slouken@8772
   981
    if (hint && hint[0]) {
slouken@8772
   982
        size_t nchHints = SDL_strlen(hint);
slouken@8772
   983
        char *pUserMappings = SDL_malloc(nchHints + 1);
slouken@8582
   984
        char *pTempMappings = pUserMappings;
slouken@8772
   985
        SDL_memcpy(pUserMappings, hint, nchHints);
slouken@8267
   986
        pUserMappings[nchHints] = '\0';
slouken@8772
   987
        while (pUserMappings) {
slouken@8582
   988
            char *pchNewLine = NULL;
slouken@8582
   989
slouken@8772
   990
            pchNewLine = SDL_strchr(pUserMappings, '\n');
slouken@8772
   991
            if (pchNewLine)
slouken@8582
   992
                *pchNewLine = '\0';
slouken@8582
   993
slouken@10605
   994
            SDL_PrivateGameControllerAddMapping(pUserMappings, SDL_CONTROLLER_MAPPING_PRIORITY_USER);
slouken@8582
   995
slouken@8772
   996
            if (pchNewLine) {
slouken@8582
   997
                pUserMappings = pchNewLine + 1;
slouken@8772
   998
            } else {
slouken@8582
   999
                pUserMappings = NULL;
slouken@8772
  1000
            }
slouken@8582
  1001
        }
slouken@8582
  1002
        SDL_free(pTempMappings);
slouken@8582
  1003
    }
slouken@8582
  1004
}
slouken@8582
  1005
slouken@8582
  1006
/*
slouken@8582
  1007
 * Initialize the game controller system, mostly load our DB of controller config mappings
slouken@8582
  1008
 */
slouken@8582
  1009
int
slouken@8582
  1010
SDL_GameControllerInit(void)
slouken@8582
  1011
{
slouken@8582
  1012
    int i = 0;
slouken@8582
  1013
    const char *pMappingString = NULL;
slouken@8582
  1014
    pMappingString = s_ControllerMappings[i];
slouken@8772
  1015
    while (pMappingString) {
slouken@10605
  1016
        SDL_PrivateGameControllerAddMapping(pMappingString, SDL_CONTROLLER_MAPPING_PRIORITY_DEFAULT);
slouken@8582
  1017
slouken@8582
  1018
        i++;
slouken@8582
  1019
        pMappingString = s_ControllerMappings[i];
slouken@8582
  1020
    }
slouken@8582
  1021
slouken@8582
  1022
    /* load in any user supplied config */
slouken@8582
  1023
    SDL_GameControllerLoadHints();
slouken@8582
  1024
slouken@8582
  1025
    /* watch for joy events and fire controller ones if needed */
slouken@8772
  1026
    SDL_AddEventWatch(SDL_GameControllerEventWatcher, NULL);
slouken@8582
  1027
slouken@8067
  1028
    /* Send added events for controllers currently attached */
slouken@8067
  1029
    for (i = 0; i < SDL_NumJoysticks(); ++i) {
slouken@8067
  1030
        if (SDL_IsGameController(i)) {
slouken@8067
  1031
            SDL_Event deviceevent;
slouken@8067
  1032
            deviceevent.type = SDL_CONTROLLERDEVICEADDED;
slouken@8067
  1033
            deviceevent.cdevice.which = i;
slouken@8067
  1034
            SDL_PushEvent(&deviceevent);
slouken@8067
  1035
        }
slouken@8067
  1036
    }
slouken@8067
  1037
slouken@8582
  1038
    return (0);
slouken@8582
  1039
}
slouken@8582
  1040
slouken@8582
  1041
slouken@8582
  1042
/*
slouken@8582
  1043
 * Get the implementation dependent name of a controller
slouken@8582
  1044
 */
slouken@8582
  1045
const char *
slouken@8582
  1046
SDL_GameControllerNameForIndex(int device_index)
slouken@8582
  1047
{
slouken@8582
  1048
    ControllerMapping_t *pSupportedController =  SDL_PrivateGetControllerMapping(device_index);
slouken@8772
  1049
    if (pSupportedController) {
slouken@8582
  1050
        return pSupportedController->name;
slouken@8582
  1051
    }
slouken@8582
  1052
    return NULL;
slouken@8582
  1053
}
slouken@8582
  1054
slouken@8582
  1055
slouken@8582
  1056
/*
slouken@8582
  1057
 * Return 1 if the joystick at this device index is a supported controller
slouken@8582
  1058
 */
slouken@8582
  1059
SDL_bool
slouken@8582
  1060
SDL_IsGameController(int device_index)
slouken@8582
  1061
{
slouken@8582
  1062
    ControllerMapping_t *pSupportedController =  SDL_PrivateGetControllerMapping(device_index);
slouken@8772
  1063
    if (pSupportedController) {
slouken@8582
  1064
        return SDL_TRUE;
slouken@8582
  1065
    }
slouken@8582
  1066
slouken@8582
  1067
    return SDL_FALSE;
slouken@8582
  1068
}
slouken@8582
  1069
slouken@8582
  1070
/*
slouken@8582
  1071
 * Open a controller for use - the index passed as an argument refers to
slouken@8582
  1072
 * the N'th controller on the system.  This index is the value which will
slouken@8582
  1073
 * identify this controller in future controller events.
slouken@8582
  1074
 *
slouken@8582
  1075
 * This function returns a controller identifier, or NULL if an error occurred.
slouken@8582
  1076
 */
slouken@8582
  1077
SDL_GameController *
slouken@8582
  1078
SDL_GameControllerOpen(int device_index)
slouken@8582
  1079
{
slouken@8582
  1080
    SDL_GameController *gamecontroller;
slouken@8582
  1081
    SDL_GameController *gamecontrollerlist;
slouken@8582
  1082
    ControllerMapping_t *pSupportedController = NULL;
slouken@8582
  1083
slouken@8582
  1084
    if ((device_index < 0) || (device_index >= SDL_NumJoysticks())) {
slouken@8582
  1085
        SDL_SetError("There are %d joysticks available", SDL_NumJoysticks());
slouken@8582
  1086
        return (NULL);
slouken@8582
  1087
    }
slouken@8582
  1088
slouken@8582
  1089
    gamecontrollerlist = SDL_gamecontrollers;
slouken@8582
  1090
    /* If the controller is already open, return it */
slouken@8772
  1091
    while (gamecontrollerlist) {
slouken@8772
  1092
        if (SDL_SYS_GetInstanceIdOfDeviceIndex(device_index) == gamecontrollerlist->joystick->instance_id) {
slouken@8582
  1093
                gamecontroller = gamecontrollerlist;
slouken@8582
  1094
                ++gamecontroller->ref_count;
slouken@8582
  1095
                return (gamecontroller);
slouken@8582
  1096
        }
slouken@8582
  1097
        gamecontrollerlist = gamecontrollerlist->next;
slouken@8582
  1098
    }
slouken@8582
  1099
slouken@8582
  1100
    /* Find a controller mapping */
slouken@8582
  1101
    pSupportedController =  SDL_PrivateGetControllerMapping(device_index);
slouken@8772
  1102
    if (!pSupportedController) {
slouken@8772
  1103
        SDL_SetError("Couldn't find mapping for device (%d)", device_index);
slouken@8582
  1104
        return (NULL);
slouken@8582
  1105
    }
slouken@8582
  1106
slouken@8582
  1107
    /* Create and initialize the joystick */
slouken@8582
  1108
    gamecontroller = (SDL_GameController *) SDL_malloc((sizeof *gamecontroller));
slouken@8582
  1109
    if (gamecontroller == NULL) {
slouken@8582
  1110
        SDL_OutOfMemory();
slouken@8582
  1111
        return NULL;
slouken@8582
  1112
    }
slouken@8582
  1113
slouken@8582
  1114
    SDL_memset(gamecontroller, 0, (sizeof *gamecontroller));
slouken@8582
  1115
    gamecontroller->joystick = SDL_JoystickOpen(device_index);
slouken@8772
  1116
    if (!gamecontroller->joystick) {
slouken@8582
  1117
        SDL_free(gamecontroller);
slouken@8582
  1118
        return NULL;
slouken@8582
  1119
    }
slouken@8582
  1120
slouken@8772
  1121
    SDL_PrivateLoadButtonMapping(&gamecontroller->mapping, pSupportedController->guid, pSupportedController->name, pSupportedController->mapping);
slouken@8582
  1122
slouken@10476
  1123
    /* The triggers are mapped from -32768 to 32767, where -32768 is the 'unpressed' value */
slouken@10476
  1124
    {
slouken@10476
  1125
        int leftTriggerMapping = gamecontroller->mapping.axes[SDL_CONTROLLER_AXIS_TRIGGERLEFT];
slouken@10476
  1126
        int rightTriggerMapping = gamecontroller->mapping.axes[SDL_CONTROLLER_AXIS_TRIGGERRIGHT];
slouken@10476
  1127
        if (leftTriggerMapping >= 0) {
slouken@10477
  1128
            gamecontroller->joystick->axes[leftTriggerMapping] =
slouken@10477
  1129
            gamecontroller->joystick->axes_zero[leftTriggerMapping] = (Sint16)-32768;
slouken@10476
  1130
        }
slouken@10476
  1131
        if (rightTriggerMapping >= 0) {
slouken@10477
  1132
            gamecontroller->joystick->axes[rightTriggerMapping] =
slouken@10477
  1133
            gamecontroller->joystick->axes_zero[rightTriggerMapping] = (Sint16)-32768;
slouken@10476
  1134
        }
slouken@10476
  1135
    }
slouken@10476
  1136
slouken@8582
  1137
    /* Add joystick to list */
slouken@8582
  1138
    ++gamecontroller->ref_count;
slouken@8582
  1139
    /* Link the joystick in the list */
slouken@8582
  1140
    gamecontroller->next = SDL_gamecontrollers;
slouken@8582
  1141
    SDL_gamecontrollers = gamecontroller;
slouken@8582
  1142
slouken@8772
  1143
    SDL_SYS_JoystickUpdate(gamecontroller->joystick);
slouken@8582
  1144
slouken@8582
  1145
    return (gamecontroller);
slouken@8582
  1146
}
slouken@8582
  1147
slouken@8582
  1148
/*
slouken@8582
  1149
 * Manually pump for controller updates.
slouken@8582
  1150
 */
slouken@8582
  1151
void
slouken@8582
  1152
SDL_GameControllerUpdate(void)
slouken@8582
  1153
{
slouken@8582
  1154
    /* Just for API completeness; the joystick API does all the work. */
slouken@8582
  1155
    SDL_JoystickUpdate();
slouken@8582
  1156
}
slouken@8582
  1157
slouken@8582
  1158
slouken@8582
  1159
/*
slouken@8582
  1160
 * Get the current state of an axis control on a controller
slouken@8582
  1161
 */
slouken@8582
  1162
Sint16
slouken@8582
  1163
SDL_GameControllerGetAxis(SDL_GameController * gamecontroller, SDL_GameControllerAxis axis)
slouken@8582
  1164
{
slouken@8772
  1165
    if (!gamecontroller)
slouken@8582
  1166
        return 0;
slouken@8582
  1167
slouken@8772
  1168
    if (gamecontroller->mapping.axes[axis] >= 0) {
slouken@8772
  1169
        Sint16 value = (SDL_JoystickGetAxis(gamecontroller->joystick, gamecontroller->mapping.axes[axis]));
slouken@8772
  1170
        switch (axis) {
slouken@8582
  1171
            case SDL_CONTROLLER_AXIS_TRIGGERLEFT:
slouken@8582
  1172
            case SDL_CONTROLLER_AXIS_TRIGGERRIGHT:
slouken@10476
  1173
                /* Shift it to be 0 - 32767 */
slouken@8582
  1174
                value = value / 2 + 16384;
slouken@8582
  1175
            default:
slouken@8582
  1176
                break;
slouken@8582
  1177
        }
slouken@8582
  1178
        return value;
slouken@8772
  1179
    } else if (gamecontroller->mapping.buttonasaxis[axis] >= 0) {
slouken@8582
  1180
        Uint8 value;
slouken@8772
  1181
        value = SDL_JoystickGetButton(gamecontroller->joystick, gamecontroller->mapping.buttonasaxis[axis]);
slouken@8772
  1182
        if (value > 0)
slouken@8582
  1183
            return 32767;
slouken@8582
  1184
        return 0;
slouken@8582
  1185
    }
slouken@8582
  1186
    return 0;
slouken@8582
  1187
}
slouken@8582
  1188
slouken@8582
  1189
slouken@8582
  1190
/*
slouken@8582
  1191
 * Get the current state of a button on a controller
slouken@8582
  1192
 */
slouken@8582
  1193
Uint8
slouken@8582
  1194
SDL_GameControllerGetButton(SDL_GameController * gamecontroller, SDL_GameControllerButton button)
slouken@8582
  1195
{
slouken@8772
  1196
    if (!gamecontroller)
slouken@8582
  1197
        return 0;
slouken@8582
  1198
slouken@8772
  1199
    if (gamecontroller->mapping.buttons[button] >= 0) {
slouken@8772
  1200
        return (SDL_JoystickGetButton(gamecontroller->joystick, gamecontroller->mapping.buttons[button]));
slouken@8772
  1201
    } else if (gamecontroller->mapping.axesasbutton[button] >= 0) {
slouken@8582
  1202
        Sint16 value;
slouken@8772
  1203
        value = SDL_JoystickGetAxis(gamecontroller->joystick, gamecontroller->mapping.axesasbutton[button]);
slouken@8772
  1204
        if (ABS(value) > 32768/2)
slouken@8582
  1205
            return 1;
slouken@8582
  1206
        return 0;
slouken@8772
  1207
    } else if (gamecontroller->mapping.hatasbutton[button].hat >= 0) {
slouken@8582
  1208
        Uint8 value;
slouken@8772
  1209
        value = SDL_JoystickGetHat(gamecontroller->joystick, gamecontroller->mapping.hatasbutton[button].hat);
slouken@8582
  1210
slouken@8772
  1211
        if (value & gamecontroller->mapping.hatasbutton[button].mask)
slouken@8582
  1212
            return 1;
slouken@8582
  1213
        return 0;
slouken@8582
  1214
    }
slouken@8582
  1215
slouken@8582
  1216
    return 0;
slouken@8582
  1217
}
slouken@8582
  1218
slouken@10595
  1219
const char *
slouken@10595
  1220
SDL_GameControllerName(SDL_GameController * gamecontroller)
slouken@10595
  1221
{
slouken@10595
  1222
    if (!gamecontroller)
slouken@10595
  1223
        return NULL;
slouken@10595
  1224
slouken@10595
  1225
    return gamecontroller->mapping.name;
slouken@10595
  1226
}
slouken@10595
  1227
slouken@10595
  1228
Uint16
slouken@10595
  1229
SDL_GameControllerGetVendor(SDL_GameController * gamecontroller)
slouken@10595
  1230
{
slouken@10595
  1231
    return SDL_JoystickGetVendor(SDL_GameControllerGetJoystick(gamecontroller));
slouken@10595
  1232
}
slouken@10595
  1233
slouken@10595
  1234
Uint16
slouken@10595
  1235
SDL_GameControllerGetProduct(SDL_GameController * gamecontroller)
slouken@10595
  1236
{
slouken@10595
  1237
    return SDL_JoystickGetProduct(SDL_GameControllerGetJoystick(gamecontroller));
slouken@10595
  1238
}
slouken@10595
  1239
slouken@10595
  1240
Uint16
slouken@10595
  1241
SDL_GameControllerGetProductVersion(SDL_GameController * gamecontroller)
slouken@10595
  1242
{
slouken@10595
  1243
    return SDL_JoystickGetProductVersion(SDL_GameControllerGetJoystick(gamecontroller));
slouken@10595
  1244
}
slouken@10595
  1245
slouken@8582
  1246
/*
slouken@8582
  1247
 * Return if the joystick in question is currently attached to the system,
slouken@8582
  1248
 *  \return 0 if not plugged in, 1 if still present.
slouken@8582
  1249
 */
slouken@8582
  1250
SDL_bool
slouken@8772
  1251
SDL_GameControllerGetAttached(SDL_GameController * gamecontroller)
slouken@8582
  1252
{
slouken@8772
  1253
    if (!gamecontroller)
slouken@8582
  1254
        return SDL_FALSE;
slouken@8582
  1255
slouken@8582
  1256
    return SDL_JoystickGetAttached(gamecontroller->joystick);
slouken@8582
  1257
}
slouken@8582
  1258
slouken@8582
  1259
/*
slouken@8582
  1260
 * Get the joystick for this controller
slouken@8582
  1261
 */
slouken@8582
  1262
SDL_Joystick *SDL_GameControllerGetJoystick(SDL_GameController * gamecontroller)
slouken@8582
  1263
{
slouken@8772
  1264
    if (!gamecontroller)
slouken@8582
  1265
        return NULL;
slouken@8582
  1266
slouken@8582
  1267
    return gamecontroller->joystick;
slouken@8582
  1268
}
slouken@8582
  1269
icculus@9916
  1270
icculus@9916
  1271
/*
icculus@9916
  1272
 * Find the SDL_GameController that owns this instance id
icculus@9916
  1273
 */
icculus@9916
  1274
SDL_GameController *
icculus@9916
  1275
SDL_GameControllerFromInstanceID(SDL_JoystickID joyid)
icculus@9916
  1276
{
icculus@9916
  1277
    SDL_GameController *gamecontroller = SDL_gamecontrollers;
icculus@9916
  1278
    while (gamecontroller) {
icculus@9916
  1279
        if (gamecontroller->joystick->instance_id == joyid) {
icculus@9916
  1280
            return gamecontroller;
icculus@9916
  1281
        }
icculus@9916
  1282
        gamecontroller = gamecontroller->next;
icculus@9916
  1283
    }
icculus@9916
  1284
icculus@9916
  1285
    return NULL;
icculus@9916
  1286
}
icculus@9916
  1287
icculus@9916
  1288
slouken@8582
  1289
/**
slouken@8582
  1290
 * Get the SDL joystick layer binding for this controller axis mapping
slouken@8582
  1291
 */
slouken@8582
  1292
SDL_GameControllerButtonBind SDL_GameControllerGetBindForAxis(SDL_GameController * gamecontroller, SDL_GameControllerAxis axis)
slouken@8582
  1293
{
slouken@8582
  1294
    SDL_GameControllerButtonBind bind;
slouken@8772
  1295
    SDL_memset(&bind, 0x0, sizeof(bind));
slouken@8582
  1296
slouken@8772
  1297
    if (!gamecontroller || axis == SDL_CONTROLLER_AXIS_INVALID)
slouken@8582
  1298
        return bind;
slouken@8582
  1299
slouken@8772
  1300
    if (gamecontroller->mapping.axes[axis] >= 0) {
slouken@8582
  1301
        bind.bindType = SDL_CONTROLLER_BINDTYPE_AXIS;
slouken@8582
  1302
        bind.value.button = gamecontroller->mapping.axes[axis];
slouken@8772
  1303
    } else if (gamecontroller->mapping.buttonasaxis[axis] >= 0) {
slouken@8582
  1304
        bind.bindType = SDL_CONTROLLER_BINDTYPE_BUTTON;
slouken@8582
  1305
        bind.value.button = gamecontroller->mapping.buttonasaxis[axis];
slouken@8582
  1306
    }
slouken@8582
  1307
slouken@8582
  1308
    return bind;
slouken@8582
  1309
}
slouken@8582
  1310
slouken@8582
  1311
slouken@8582
  1312
/**
slouken@8582
  1313
 * Get the SDL joystick layer binding for this controller button mapping
slouken@8582
  1314
 */
slouken@8582
  1315
SDL_GameControllerButtonBind SDL_GameControllerGetBindForButton(SDL_GameController * gamecontroller, SDL_GameControllerButton button)
slouken@8582
  1316
{
slouken@8582
  1317
    SDL_GameControllerButtonBind bind;
slouken@8772
  1318
    SDL_memset(&bind, 0x0, sizeof(bind));
slouken@8582
  1319
slouken@8772
  1320
    if (!gamecontroller || button == SDL_CONTROLLER_BUTTON_INVALID)
slouken@8582
  1321
        return bind;
slouken@8582
  1322
slouken@8772
  1323
    if (gamecontroller->mapping.buttons[button] >= 0) {
slouken@8582
  1324
        bind.bindType = SDL_CONTROLLER_BINDTYPE_BUTTON;
slouken@8582
  1325
        bind.value.button = gamecontroller->mapping.buttons[button];
slouken@8772
  1326
    } else if (gamecontroller->mapping.axesasbutton[button] >= 0) {
slouken@8582
  1327
        bind.bindType = SDL_CONTROLLER_BINDTYPE_AXIS;
slouken@8582
  1328
        bind.value.axis = gamecontroller->mapping.axesasbutton[button];
slouken@8772
  1329
    } else if (gamecontroller->mapping.hatasbutton[button].hat >= 0) {
slouken@8582
  1330
        bind.bindType = SDL_CONTROLLER_BINDTYPE_HAT;
slouken@8582
  1331
        bind.value.hat.hat = gamecontroller->mapping.hatasbutton[button].hat;
slouken@8582
  1332
        bind.value.hat.hat_mask = gamecontroller->mapping.hatasbutton[button].mask;
slouken@8582
  1333
    }
slouken@8582
  1334
slouken@8582
  1335
    return bind;
slouken@8582
  1336
}
slouken@8582
  1337
slouken@8582
  1338
slouken@8582
  1339
void
slouken@8582
  1340
SDL_GameControllerClose(SDL_GameController * gamecontroller)
slouken@8582
  1341
{
slouken@8582
  1342
    SDL_GameController *gamecontrollerlist, *gamecontrollerlistprev;
slouken@8582
  1343
slouken@8772
  1344
    if (!gamecontroller)
slouken@8582
  1345
        return;
slouken@8582
  1346
slouken@8582
  1347
    /* First decrement ref count */
slouken@8582
  1348
    if (--gamecontroller->ref_count > 0) {
slouken@8582
  1349
        return;
slouken@8582
  1350
    }
slouken@8582
  1351
slouken@8772
  1352
    SDL_JoystickClose(gamecontroller->joystick);
slouken@8582
  1353
slouken@8582
  1354
    gamecontrollerlist = SDL_gamecontrollers;
slouken@8582
  1355
    gamecontrollerlistprev = NULL;
slouken@8772
  1356
    while (gamecontrollerlist) {
slouken@8772
  1357
        if (gamecontroller == gamecontrollerlist) {
slouken@8772
  1358
            if (gamecontrollerlistprev) {
slouken@8582
  1359
                /* unlink this entry */
slouken@8582
  1360
                gamecontrollerlistprev->next = gamecontrollerlist->next;
slouken@8772
  1361
            } else {
slouken@8582
  1362
                SDL_gamecontrollers = gamecontroller->next;
slouken@8582
  1363
            }
slouken@8582
  1364
slouken@8582
  1365
            break;
slouken@8582
  1366
        }
slouken@8582
  1367
        gamecontrollerlistprev = gamecontrollerlist;
slouken@8582
  1368
        gamecontrollerlist = gamecontrollerlist->next;
slouken@8582
  1369
    }
slouken@8582
  1370
slouken@8582
  1371
    SDL_free(gamecontroller);
slouken@8582
  1372
}
slouken@8582
  1373
slouken@8582
  1374
slouken@8582
  1375
/*
slouken@8582
  1376
 * Quit the controller subsystem
slouken@8582
  1377
 */
slouken@8582
  1378
void
slouken@8582
  1379
SDL_GameControllerQuit(void)
slouken@8582
  1380
{
slouken@8582
  1381
    ControllerMapping_t *pControllerMap;
slouken@8772
  1382
    while (SDL_gamecontrollers) {
slouken@8582
  1383
        SDL_gamecontrollers->ref_count = 1;
slouken@8582
  1384
        SDL_GameControllerClose(SDL_gamecontrollers);
slouken@8582
  1385
    }
slouken@8582
  1386
slouken@8772
  1387
    while (s_pSupportedControllers) {
slouken@8582
  1388
        pControllerMap = s_pSupportedControllers;
slouken@8582
  1389
        s_pSupportedControllers = s_pSupportedControllers->next;
slouken@8772
  1390
        SDL_free(pControllerMap->name);
slouken@8772
  1391
        SDL_free(pControllerMap->mapping);
slouken@8772
  1392
        SDL_free(pControllerMap);
slouken@8582
  1393
    }
slouken@8582
  1394
slouken@8772
  1395
    SDL_DelEventWatch(SDL_GameControllerEventWatcher, NULL);
slouken@8582
  1396
slouken@8582
  1397
}
slouken@8582
  1398
slouken@8582
  1399
/*
slouken@8582
  1400
 * Event filter to transform joystick events into appropriate game controller ones
slouken@8582
  1401
 */
slouken@8582
  1402
int
slouken@8582
  1403
SDL_PrivateGameControllerAxis(SDL_GameController * gamecontroller, SDL_GameControllerAxis axis, Sint16 value)
slouken@8582
  1404
{
slouken@8582
  1405
    int posted;
slouken@8582
  1406
slouken@8582
  1407
    /* translate the event, if desired */
slouken@8582
  1408
    posted = 0;
slouken@8582
  1409
#if !SDL_EVENTS_DISABLED
slouken@8582
  1410
    if (SDL_GetEventState(SDL_CONTROLLERAXISMOTION) == SDL_ENABLE) {
slouken@8582
  1411
        SDL_Event event;
slouken@8582
  1412
        event.type = SDL_CONTROLLERAXISMOTION;
slouken@8582
  1413
        event.caxis.which = gamecontroller->joystick->instance_id;
slouken@8582
  1414
        event.caxis.axis = axis;
slouken@8582
  1415
        event.caxis.value = value;
slouken@8582
  1416
        posted = SDL_PushEvent(&event) == 1;
slouken@8582
  1417
    }
slouken@8582
  1418
#endif /* !SDL_EVENTS_DISABLED */
slouken@8582
  1419
    return (posted);
slouken@8582
  1420
}
slouken@8582
  1421
slouken@8582
  1422
slouken@8582
  1423
/*
slouken@8582
  1424
 * Event filter to transform joystick events into appropriate game controller ones
slouken@8582
  1425
 */
slouken@8582
  1426
int
slouken@8582
  1427
SDL_PrivateGameControllerButton(SDL_GameController * gamecontroller, SDL_GameControllerButton button, Uint8 state)
slouken@8582
  1428
{
slouken@8582
  1429
    int posted;
slouken@8582
  1430
#if !SDL_EVENTS_DISABLED
slouken@8582
  1431
    SDL_Event event;
slouken@8582
  1432
slouken@8772
  1433
    if (button == SDL_CONTROLLER_BUTTON_INVALID)
slouken@8582
  1434
        return (0);
slouken@8582
  1435
slouken@8582
  1436
    switch (state) {
slouken@8582
  1437
    case SDL_PRESSED:
slouken@8582
  1438
        event.type = SDL_CONTROLLERBUTTONDOWN;
slouken@8582
  1439
        break;
slouken@8582
  1440
    case SDL_RELEASED:
slouken@8582
  1441
        event.type = SDL_CONTROLLERBUTTONUP;
slouken@8582
  1442
        break;
slouken@8582
  1443
    default:
slouken@8582
  1444
        /* Invalid state -- bail */
slouken@8582
  1445
        return (0);
slouken@8582
  1446
    }
slouken@8582
  1447
#endif /* !SDL_EVENTS_DISABLED */
slouken@8582
  1448
slouken@8582
  1449
    /* translate the event, if desired */
slouken@8582
  1450
    posted = 0;
slouken@8582
  1451
#if !SDL_EVENTS_DISABLED
slouken@8582
  1452
    if (SDL_GetEventState(event.type) == SDL_ENABLE) {
slouken@8582
  1453
        event.cbutton.which = gamecontroller->joystick->instance_id;
slouken@8582
  1454
        event.cbutton.button = button;
slouken@8582
  1455
        event.cbutton.state = state;
slouken@8582
  1456
        posted = SDL_PushEvent(&event) == 1;
slouken@8582
  1457
    }
slouken@8582
  1458
#endif /* !SDL_EVENTS_DISABLED */
slouken@8582
  1459
    return (posted);
slouken@8582
  1460
}
slouken@8582
  1461
slouken@8582
  1462
/*
slouken@8582
  1463
 * Turn off controller events
slouken@8582
  1464
 */
slouken@8582
  1465
int
slouken@8582
  1466
SDL_GameControllerEventState(int state)
slouken@8582
  1467
{
slouken@8582
  1468
#if SDL_EVENTS_DISABLED
slouken@8582
  1469
    return SDL_IGNORE;
slouken@8582
  1470
#else
slouken@8582
  1471
    const Uint32 event_list[] = {
slouken@8582
  1472
        SDL_CONTROLLERAXISMOTION, SDL_CONTROLLERBUTTONDOWN, SDL_CONTROLLERBUTTONUP,
slouken@8582
  1473
        SDL_CONTROLLERDEVICEADDED, SDL_CONTROLLERDEVICEREMOVED, SDL_CONTROLLERDEVICEREMAPPED,
slouken@8582
  1474
    };
slouken@8582
  1475
    unsigned int i;
slouken@8582
  1476
slouken@8582
  1477
    switch (state) {
slouken@8582
  1478
    case SDL_QUERY:
slouken@8582
  1479
        state = SDL_IGNORE;
slouken@8582
  1480
        for (i = 0; i < SDL_arraysize(event_list); ++i) {
slouken@8582
  1481
            state = SDL_EventState(event_list[i], SDL_QUERY);
slouken@8582
  1482
            if (state == SDL_ENABLE) {
slouken@8582
  1483
                break;
slouken@8582
  1484
            }
slouken@8582
  1485
        }
slouken@8582
  1486
        break;
slouken@8582
  1487
    default:
slouken@8582
  1488
        for (i = 0; i < SDL_arraysize(event_list); ++i) {
slouken@8582
  1489
            SDL_EventState(event_list[i], state);
slouken@8582
  1490
        }
slouken@8582
  1491
        break;
slouken@8582
  1492
    }
slouken@8582
  1493
    return (state);
slouken@8582
  1494
#endif /* SDL_EVENTS_DISABLED */
slouken@8582
  1495
}
slouken@8582
  1496
slouken@8582
  1497
/* vi: set ts=4 sw=4 expandtab: */