src/haptic/SDL_haptic.c
author Sam Lantinga <slouken@libsdl.org>
Sun, 02 Feb 2014 00:53:27 -0800
changeset 8149 681eb46b8ac4
parent 8093 b43765095a6f
child 8170 3b7bb407fcf7
permissions -rw-r--r--
Fixed bug 2374 - Update copyright for 2014...

Is it that time already??
slouken@2713
     1
/*
slouken@5535
     2
  Simple DirectMedia Layer
slouken@8149
     3
  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
slouken@2713
     4
slouken@5535
     5
  This software is provided 'as-is', without any express or implied
slouken@5535
     6
  warranty.  In no event will the authors be held liable for any damages
slouken@5535
     7
  arising from the use of this software.
slouken@2713
     8
slouken@5535
     9
  Permission is granted to anyone to use this software for any purpose,
slouken@5535
    10
  including commercial applications, and to alter it and redistribute it
slouken@5535
    11
  freely, subject to the following restrictions:
slouken@2713
    12
slouken@5535
    13
  1. The origin of this software must not be misrepresented; you must not
slouken@5535
    14
     claim that you wrote the original software. If you use this software
slouken@5535
    15
     in a product, an acknowledgment in the product documentation would be
slouken@5535
    16
     appreciated but is not required.
slouken@5535
    17
  2. Altered source versions must be plainly marked as such, and must not be
slouken@5535
    18
     misrepresented as being the original software.
slouken@5535
    19
  3. This notice may not be removed or altered from any source distribution.
slouken@2713
    20
*/
icculus@8093
    21
#include "../SDL_internal.h"
slouken@2713
    22
slouken@2713
    23
#include "SDL_syshaptic.h"
slouken@4472
    24
#include "SDL_haptic_c.h"
slouken@2713
    25
#include "../joystick/SDL_joystick_c.h" /* For SDL_PrivateJoystickValid */
icculus@7621
    26
#include "SDL_assert.h"
slouken@2713
    27
slouken@2713
    28
Uint8 SDL_numhaptics = 0;
slouken@2713
    29
SDL_Haptic **SDL_haptics = NULL;
slouken@2713
    30
slouken@2713
    31
slouken@2713
    32
/*
slouken@2713
    33
 * Initializes the Haptic devices.
slouken@2713
    34
 */
slouken@2713
    35
int
slouken@2713
    36
SDL_HapticInit(void)
slouken@2713
    37
{
slouken@2713
    38
    int arraylen;
slouken@2713
    39
    int status;
slouken@2713
    40
slouken@2713
    41
    SDL_numhaptics = 0;
slouken@2713
    42
    status = SDL_SYS_HapticInit();
slouken@2713
    43
    if (status >= 0) {
slouken@2713
    44
        arraylen = (status + 1) * sizeof(*SDL_haptics);
slouken@2713
    45
        SDL_haptics = (SDL_Haptic **) SDL_malloc(arraylen);
slouken@2713
    46
        if (SDL_haptics == NULL) {      /* Out of memory. */
slouken@2713
    47
            SDL_numhaptics = 0;
slouken@2713
    48
        } else {
slouken@2713
    49
            SDL_memset(SDL_haptics, 0, arraylen);
slouken@2713
    50
            SDL_numhaptics = status;
slouken@2713
    51
        }
slouken@2713
    52
        status = 0;
slouken@2713
    53
    }
slouken@2713
    54
slouken@2713
    55
    return status;
slouken@2713
    56
}
slouken@2713
    57
slouken@2713
    58
slouken@2713
    59
/*
slouken@2713
    60
 * Checks to see if the haptic device is valid
slouken@2713
    61
 */
slouken@2713
    62
static int
slouken@2713
    63
ValidHaptic(SDL_Haptic * haptic)
slouken@2713
    64
{
slouken@2713
    65
    int i;
slouken@2713
    66
    int valid;
slouken@2713
    67
slouken@2713
    68
    valid = 0;
bobbens@3080
    69
    if (haptic != NULL) {
bobbens@3080
    70
        for (i = 0; i < SDL_numhaptics; i++) {
bobbens@3080
    71
            if (SDL_haptics[i] == haptic) {
bobbens@3080
    72
                valid = 1;
bobbens@3080
    73
                break;
bobbens@3080
    74
            }
slouken@2713
    75
        }
slouken@2713
    76
    }
slouken@2713
    77
bobbens@3080
    78
    /* Create the error here. */
bobbens@3080
    79
    if (valid == 0) {
bobbens@3080
    80
        SDL_SetError("Haptic: Invalid haptic device identifier");
bobbens@3080
    81
    }
bobbens@3080
    82
slouken@2713
    83
    return valid;
slouken@2713
    84
}
slouken@2713
    85
slouken@2713
    86
slouken@2713
    87
/*
slouken@2713
    88
 * Returns the number of available devices.
slouken@2713
    89
 */
slouken@2713
    90
int
slouken@2713
    91
SDL_NumHaptics(void)
slouken@2713
    92
{
slouken@2713
    93
    return SDL_numhaptics;
slouken@2713
    94
}
slouken@2713
    95
slouken@2713
    96
slouken@2713
    97
/*
slouken@2713
    98
 * Gets the name of a Haptic device by index.
slouken@2713
    99
 */
slouken@2713
   100
const char *
slouken@2713
   101
SDL_HapticName(int device_index)
slouken@2713
   102
{
slouken@2713
   103
    if ((device_index < 0) || (device_index >= SDL_numhaptics)) {
slouken@2713
   104
        SDL_SetError("Haptic: There are %d haptic devices available",
slouken@2713
   105
                     SDL_numhaptics);
slouken@2713
   106
        return NULL;
slouken@2713
   107
    }
slouken@2713
   108
    return SDL_SYS_HapticName(device_index);
slouken@2713
   109
}
slouken@2713
   110
slouken@2713
   111
slouken@2713
   112
/*
slouken@2713
   113
 * Opens a Haptic device.
slouken@2713
   114
 */
slouken@2713
   115
SDL_Haptic *
slouken@2713
   116
SDL_HapticOpen(int device_index)
slouken@2713
   117
{
slouken@2713
   118
    int i;
slouken@2713
   119
    SDL_Haptic *haptic;
slouken@2713
   120
slouken@2713
   121
    if ((device_index < 0) || (device_index >= SDL_numhaptics)) {
slouken@2713
   122
        SDL_SetError("Haptic: There are %d haptic devices available",
slouken@2713
   123
                     SDL_numhaptics);
slouken@2713
   124
        return NULL;
slouken@2713
   125
    }
slouken@2713
   126
slouken@2713
   127
    /* If the haptic is already open, return it */
slouken@2713
   128
    for (i = 0; SDL_haptics[i]; i++) {
slouken@2713
   129
        if (device_index == SDL_haptics[i]->index) {
slouken@2713
   130
            haptic = SDL_haptics[i];
slouken@2713
   131
            ++haptic->ref_count;
slouken@2713
   132
            return haptic;
slouken@2713
   133
        }
slouken@2713
   134
    }
slouken@2713
   135
slouken@2713
   136
    /* Create the haptic device */
slouken@2713
   137
    haptic = (SDL_Haptic *) SDL_malloc((sizeof *haptic));
slouken@2713
   138
    if (haptic == NULL) {
slouken@2713
   139
        SDL_OutOfMemory();
slouken@2713
   140
        return NULL;
slouken@2713
   141
    }
slouken@2713
   142
slouken@2713
   143
    /* Initialize the haptic device */
slouken@2713
   144
    SDL_memset(haptic, 0, (sizeof *haptic));
slouken@5360
   145
    haptic->rumble_id = -1;
slouken@2713
   146
    haptic->index = device_index;
slouken@2713
   147
    if (SDL_SYS_HapticOpen(haptic) < 0) {
slouken@2713
   148
        SDL_free(haptic);
slouken@2713
   149
        return NULL;
slouken@2713
   150
    }
slouken@2713
   151
slouken@7524
   152
    /* Add haptic to list */
slouken@7524
   153
    for (i = 0; SDL_haptics[i]; i++)
slouken@7524
   154
        /* Skip to next haptic */ ;
slouken@7524
   155
    if (i >= SDL_numhaptics) {
slouken@7524
   156
        SDL_free(haptic);
slouken@7524
   157
        SDL_SetError("Haptic: Trying to add device past the number originally detected");
slouken@7524
   158
        return NULL;
slouken@7524
   159
    }
slouken@7524
   160
    SDL_haptics[i] = haptic;
slouken@7524
   161
    ++haptic->ref_count;
slouken@7524
   162
slouken@2713
   163
    /* Disable autocenter and set gain to max. */
slouken@2713
   164
    if (haptic->supported & SDL_HAPTIC_GAIN)
slouken@2713
   165
        SDL_HapticSetGain(haptic, 100);
slouken@2713
   166
    if (haptic->supported & SDL_HAPTIC_AUTOCENTER)
slouken@2713
   167
        SDL_HapticSetAutocenter(haptic, 0);
slouken@2713
   168
slouken@2713
   169
    return haptic;
slouken@2713
   170
}
slouken@2713
   171
slouken@2713
   172
slouken@2713
   173
/*
slouken@2713
   174
 * Returns 1 if the device has been opened.
slouken@2713
   175
 */
slouken@2713
   176
int
slouken@2713
   177
SDL_HapticOpened(int device_index)
slouken@2713
   178
{
slouken@2713
   179
    int i, opened;
slouken@2713
   180
slouken@7524
   181
    /* Make sure it's valid. */
slouken@7524
   182
    if ((device_index < 0) || (device_index >= SDL_numhaptics)) {
slouken@7524
   183
        SDL_SetError("Haptic: There are %d haptic devices available",
slouken@7524
   184
                     SDL_numhaptics);
philipp@7533
   185
        return 0;
slouken@7524
   186
    }
slouken@7524
   187
slouken@2713
   188
    opened = 0;
slouken@2713
   189
    for (i = 0; SDL_haptics[i]; i++) {
slouken@2713
   190
        if (SDL_haptics[i]->index == (Uint8) device_index) {
slouken@2713
   191
            opened = 1;
slouken@2713
   192
            break;
slouken@2713
   193
        }
slouken@2713
   194
    }
slouken@2713
   195
    return opened;
slouken@2713
   196
}
slouken@2713
   197
slouken@2713
   198
slouken@2713
   199
/*
slouken@2713
   200
 * Returns the index to a haptic device.
slouken@2713
   201
 */
slouken@2713
   202
int
slouken@2713
   203
SDL_HapticIndex(SDL_Haptic * haptic)
slouken@2713
   204
{
slouken@2713
   205
    if (!ValidHaptic(haptic)) {
slouken@2713
   206
        return -1;
slouken@2713
   207
    }
slouken@2713
   208
slouken@2713
   209
    return haptic->index;
slouken@2713
   210
}
slouken@2713
   211
slouken@2713
   212
slouken@2713
   213
/*
slouken@2713
   214
 * Returns SDL_TRUE if mouse is haptic, SDL_FALSE if it isn't.
slouken@2713
   215
 */
slouken@2713
   216
int
slouken@2713
   217
SDL_MouseIsHaptic(void)
slouken@2713
   218
{
slouken@2713
   219
    if (SDL_SYS_HapticMouse() < 0)
slouken@2713
   220
        return SDL_FALSE;
slouken@2713
   221
    return SDL_TRUE;
slouken@2713
   222
}
slouken@2713
   223
slouken@2713
   224
slouken@2713
   225
/*
slouken@2713
   226
 * Returns the haptic device if mouse is haptic or NULL elsewise.
slouken@2713
   227
 */
slouken@2713
   228
SDL_Haptic *
slouken@2713
   229
SDL_HapticOpenFromMouse(void)
slouken@2713
   230
{
slouken@2713
   231
    int device_index;
slouken@2713
   232
slouken@2713
   233
    device_index = SDL_SYS_HapticMouse();
slouken@2713
   234
slouken@2713
   235
    if (device_index < 0) {
slouken@2713
   236
        SDL_SetError("Haptic: Mouse isn't a haptic device.");
slouken@2713
   237
        return NULL;
slouken@2713
   238
    }
slouken@2713
   239
slouken@2713
   240
    return SDL_HapticOpen(device_index);
slouken@2713
   241
}
slouken@2713
   242
slouken@2713
   243
slouken@2713
   244
/*
slouken@2713
   245
 * Returns SDL_TRUE if joystick has haptic features.
slouken@2713
   246
 */
slouken@2713
   247
int
slouken@2713
   248
SDL_JoystickIsHaptic(SDL_Joystick * joystick)
slouken@2713
   249
{
slouken@2713
   250
    int ret;
slouken@2713
   251
slouken@2713
   252
    /* Must be a valid joystick */
slouken@6690
   253
    if (!SDL_PrivateJoystickValid(joystick)) {
slouken@2713
   254
        return -1;
slouken@2713
   255
    }
slouken@2713
   256
slouken@2713
   257
    ret = SDL_SYS_JoystickIsHaptic(joystick);
slouken@2713
   258
slouken@2713
   259
    if (ret > 0)
slouken@2713
   260
        return SDL_TRUE;
slouken@2713
   261
    else if (ret == 0)
slouken@2713
   262
        return SDL_FALSE;
slouken@2713
   263
    else
slouken@2713
   264
        return -1;
slouken@2713
   265
}
slouken@2713
   266
slouken@2713
   267
slouken@2713
   268
/*
slouken@2713
   269
 * Opens a haptic device from a joystick.
slouken@2713
   270
 */
slouken@2713
   271
SDL_Haptic *
slouken@2713
   272
SDL_HapticOpenFromJoystick(SDL_Joystick * joystick)
slouken@2713
   273
{
slouken@2713
   274
    int i;
slouken@2713
   275
    SDL_Haptic *haptic;
slouken@2713
   276
slouken@7524
   277
    /* Make sure there is room. */
slouken@7524
   278
    if (SDL_numhaptics <= 0) {
slouken@7524
   279
        SDL_SetError("Haptic: There are %d haptic devices available",
slouken@7524
   280
                     SDL_numhaptics);
slouken@7524
   281
        return NULL;
slouken@7524
   282
    }
slouken@7524
   283
slouken@2713
   284
    /* Must be a valid joystick */
slouken@6690
   285
    if (!SDL_PrivateJoystickValid(joystick)) {
bobbens@3232
   286
        SDL_SetError("Haptic: Joystick isn't valid.");
slouken@2713
   287
        return NULL;
slouken@2713
   288
    }
slouken@2713
   289
slouken@2713
   290
    /* Joystick must be haptic */
slouken@2713
   291
    if (SDL_SYS_JoystickIsHaptic(joystick) <= 0) {
bobbens@3232
   292
        SDL_SetError("Haptic: Joystick isn't a haptic device.");
slouken@2713
   293
        return NULL;
slouken@2713
   294
    }
slouken@2713
   295
slouken@2713
   296
    /* Check to see if joystick's haptic is already open */
slouken@2713
   297
    for (i = 0; SDL_haptics[i]; i++) {
slouken@2713
   298
        if (SDL_SYS_JoystickSameHaptic(SDL_haptics[i], joystick)) {
slouken@2713
   299
            haptic = SDL_haptics[i];
slouken@2713
   300
            ++haptic->ref_count;
slouken@2713
   301
            return haptic;
slouken@2713
   302
        }
slouken@2713
   303
    }
slouken@2713
   304
slouken@2713
   305
    /* Create the haptic device */
slouken@2713
   306
    haptic = (SDL_Haptic *) SDL_malloc((sizeof *haptic));
slouken@2713
   307
    if (haptic == NULL) {
slouken@2713
   308
        SDL_OutOfMemory();
slouken@2713
   309
        return NULL;
slouken@2713
   310
    }
slouken@2713
   311
slouken@2713
   312
    /* Initialize the haptic device */
slouken@2713
   313
    SDL_memset(haptic, 0, sizeof(SDL_Haptic));
slouken@5360
   314
    haptic->rumble_id = -1;
slouken@2713
   315
    if (SDL_SYS_HapticOpenFromJoystick(haptic, joystick) < 0) {
slouken@2713
   316
        SDL_free(haptic);
slouken@2713
   317
        return NULL;
slouken@2713
   318
    }
slouken@2713
   319
slouken@2713
   320
    /* Add haptic to list */
slouken@2713
   321
    for (i = 0; SDL_haptics[i]; i++)
slouken@2713
   322
        /* Skip to next haptic */ ;
slouken@7524
   323
    if (i >= SDL_numhaptics) {
slouken@7524
   324
        SDL_free(haptic);
slouken@7524
   325
        SDL_SetError("Haptic: Trying to add device past the number originally detected");
slouken@7524
   326
        return NULL;
slouken@7524
   327
    }
slouken@2713
   328
    SDL_haptics[i] = haptic;
slouken@7524
   329
    ++haptic->ref_count;
slouken@2713
   330
slouken@2713
   331
    return haptic;
slouken@2713
   332
}
slouken@2713
   333
slouken@2713
   334
slouken@2713
   335
/*
slouken@2713
   336
 * Closes a SDL_Haptic device.
slouken@2713
   337
 */
slouken@2713
   338
void
slouken@2713
   339
SDL_HapticClose(SDL_Haptic * haptic)
slouken@2713
   340
{
slouken@2713
   341
    int i;
slouken@2713
   342
slouken@2713
   343
    /* Must be valid */
slouken@2713
   344
    if (!ValidHaptic(haptic)) {
slouken@2713
   345
        return;
slouken@2713
   346
    }
slouken@2713
   347
slouken@2713
   348
    /* Check if it's still in use */
slouken@2713
   349
    if (--haptic->ref_count < 0) {
slouken@2713
   350
        return;
slouken@2713
   351
    }
slouken@2713
   352
slouken@2713
   353
    /* Close it, properly removing effects if needed */
slouken@2713
   354
    for (i = 0; i < haptic->neffects; i++) {
slouken@2713
   355
        if (haptic->effects[i].hweffect != NULL) {
slouken@2713
   356
            SDL_HapticDestroyEffect(haptic, i);
slouken@2713
   357
        }
slouken@2713
   358
    }
slouken@2713
   359
    SDL_SYS_HapticClose(haptic);
slouken@2713
   360
slouken@2713
   361
    /* Remove from the list */
slouken@2713
   362
    for (i = 0; SDL_haptics[i]; ++i) {
slouken@2713
   363
        if (haptic == SDL_haptics[i]) {
slouken@2713
   364
            SDL_haptics[i] = NULL;
slouken@2713
   365
            SDL_memcpy(&SDL_haptics[i], &SDL_haptics[i + 1],
slouken@2713
   366
                       (SDL_numhaptics - i) * sizeof(haptic));
slouken@2713
   367
            break;
slouken@2713
   368
        }
slouken@2713
   369
    }
slouken@2713
   370
slouken@2713
   371
    /* Free */
slouken@2713
   372
    SDL_free(haptic);
slouken@2713
   373
}
slouken@2713
   374
slouken@2713
   375
/*
slouken@2713
   376
 * Cleans up after the subsystem.
slouken@2713
   377
 */
slouken@2713
   378
void
slouken@2713
   379
SDL_HapticQuit(void)
slouken@2713
   380
{
slouken@2713
   381
    SDL_SYS_HapticQuit();
slouken@7719
   382
    SDL_free(SDL_haptics);
slouken@7719
   383
    SDL_haptics = NULL;
slouken@2713
   384
    SDL_numhaptics = 0;
slouken@2713
   385
}
slouken@2713
   386
slouken@2713
   387
/*
slouken@2713
   388
 * Returns the number of effects a haptic device has.
slouken@2713
   389
 */
slouken@2713
   390
int
slouken@2713
   391
SDL_HapticNumEffects(SDL_Haptic * haptic)
slouken@2713
   392
{
slouken@2713
   393
    if (!ValidHaptic(haptic)) {
slouken@2713
   394
        return -1;
slouken@2713
   395
    }
slouken@2713
   396
slouken@2713
   397
    return haptic->neffects;
slouken@2713
   398
}
slouken@2713
   399
slouken@2713
   400
slouken@2713
   401
/*
slouken@2713
   402
 * Returns the number of effects a haptic device can play.
slouken@2713
   403
 */
slouken@2713
   404
int
slouken@2713
   405
SDL_HapticNumEffectsPlaying(SDL_Haptic * haptic)
slouken@2713
   406
{
slouken@2713
   407
    if (!ValidHaptic(haptic)) {
slouken@2713
   408
        return -1;
slouken@2713
   409
    }
slouken@2713
   410
slouken@2713
   411
    return haptic->nplaying;
slouken@2713
   412
}
slouken@2713
   413
slouken@2713
   414
slouken@2713
   415
/*
slouken@2713
   416
 * Returns supported effects by the device.
slouken@2713
   417
 */
slouken@2713
   418
unsigned int
slouken@2713
   419
SDL_HapticQuery(SDL_Haptic * haptic)
slouken@2713
   420
{
slouken@2713
   421
    if (!ValidHaptic(haptic)) {
philipp@7131
   422
        return 0; /* same as if no effects were supported */
slouken@2713
   423
    }
slouken@2713
   424
slouken@2713
   425
    return haptic->supported;
slouken@2713
   426
}
slouken@2713
   427
slouken@2713
   428
slouken@2713
   429
/*
slouken@2713
   430
 * Returns the number of axis on the device.
slouken@2713
   431
 */
slouken@2713
   432
int
slouken@2713
   433
SDL_HapticNumAxes(SDL_Haptic * haptic)
slouken@2713
   434
{
slouken@2713
   435
    if (!ValidHaptic(haptic)) {
slouken@2713
   436
        return -1;
slouken@2713
   437
    }
slouken@2713
   438
slouken@2713
   439
    return haptic->naxes;
slouken@2713
   440
}
slouken@2713
   441
slouken@2713
   442
/*
slouken@2713
   443
 * Checks to see if the device can support the effect.
slouken@2713
   444
 */
slouken@2713
   445
int
slouken@2713
   446
SDL_HapticEffectSupported(SDL_Haptic * haptic, SDL_HapticEffect * effect)
slouken@2713
   447
{
slouken@2713
   448
    if (!ValidHaptic(haptic)) {
slouken@2713
   449
        return -1;
slouken@2713
   450
    }
slouken@2713
   451
slouken@2713
   452
    if ((haptic->supported & effect->type) != 0)
slouken@2713
   453
        return SDL_TRUE;
slouken@2713
   454
    return SDL_FALSE;
slouken@2713
   455
}
slouken@2713
   456
slouken@2713
   457
/*
slouken@2713
   458
 * Creates a new haptic effect.
slouken@2713
   459
 */
slouken@2713
   460
int
slouken@2713
   461
SDL_HapticNewEffect(SDL_Haptic * haptic, SDL_HapticEffect * effect)
slouken@2713
   462
{
slouken@2713
   463
    int i;
slouken@2713
   464
slouken@2713
   465
    /* Check for device validity. */
slouken@2713
   466
    if (!ValidHaptic(haptic)) {
slouken@2713
   467
        return -1;
slouken@2713
   468
    }
slouken@2713
   469
slouken@2713
   470
    /* Check to see if effect is supported */
slouken@2713
   471
    if (SDL_HapticEffectSupported(haptic, effect) == SDL_FALSE) {
icculus@7037
   472
        return SDL_SetError("Haptic: Effect not supported by haptic device.");
slouken@2713
   473
    }
slouken@2713
   474
slouken@2713
   475
    /* See if there's a free slot */
slouken@2713
   476
    for (i = 0; i < haptic->neffects; i++) {
slouken@2713
   477
        if (haptic->effects[i].hweffect == NULL) {
slouken@2713
   478
slouken@2713
   479
            /* Now let the backend create the real effect */
slouken@2713
   480
            if (SDL_SYS_HapticNewEffect(haptic, &haptic->effects[i], effect)
slouken@2713
   481
                != 0) {
slouken@2713
   482
                return -1;      /* Backend failed to create effect */
slouken@2713
   483
            }
slouken@2713
   484
slouken@2713
   485
            SDL_memcpy(&haptic->effects[i].effect, effect,
slouken@2713
   486
                       sizeof(SDL_HapticEffect));
slouken@2713
   487
            return i;
slouken@2713
   488
        }
slouken@2713
   489
    }
slouken@2713
   490
icculus@7037
   491
    return SDL_SetError("Haptic: Device has no free space left.");
slouken@2713
   492
}
slouken@2713
   493
slouken@2713
   494
/*
slouken@2713
   495
 * Checks to see if an effect is valid.
slouken@2713
   496
 */
slouken@2713
   497
static int
slouken@2713
   498
ValidEffect(SDL_Haptic * haptic, int effect)
slouken@2713
   499
{
slouken@2713
   500
    if ((effect < 0) || (effect >= haptic->neffects)) {
slouken@2713
   501
        SDL_SetError("Haptic: Invalid effect identifier.");
slouken@2713
   502
        return 0;
slouken@2713
   503
    }
slouken@2713
   504
    return 1;
slouken@2713
   505
}
slouken@2713
   506
slouken@2713
   507
/*
slouken@2713
   508
 * Updates an effect.
slouken@2713
   509
 */
slouken@2713
   510
int
slouken@2713
   511
SDL_HapticUpdateEffect(SDL_Haptic * haptic, int effect,
slouken@2713
   512
                       SDL_HapticEffect * data)
slouken@2713
   513
{
slouken@2713
   514
    if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
slouken@2713
   515
        return -1;
slouken@2713
   516
    }
slouken@2713
   517
slouken@2713
   518
    /* Can't change type dynamically. */
slouken@2713
   519
    if (data->type != haptic->effects[effect].effect.type) {
icculus@7037
   520
        return SDL_SetError("Haptic: Updating effect type is illegal.");
slouken@2713
   521
    }
slouken@2713
   522
slouken@2713
   523
    /* Updates the effect */
slouken@2713
   524
    if (SDL_SYS_HapticUpdateEffect(haptic, &haptic->effects[effect], data) <
slouken@2713
   525
        0) {
slouken@2713
   526
        return -1;
slouken@2713
   527
    }
slouken@2713
   528
slouken@2713
   529
    SDL_memcpy(&haptic->effects[effect].effect, data,
slouken@2713
   530
               sizeof(SDL_HapticEffect));
icculus@7536
   531
    return 0;
slouken@2713
   532
}
slouken@2713
   533
slouken@2713
   534
slouken@2713
   535
/*
slouken@2713
   536
 * Runs the haptic effect on the device.
slouken@2713
   537
 */
slouken@2713
   538
int
slouken@2713
   539
SDL_HapticRunEffect(SDL_Haptic * haptic, int effect, Uint32 iterations)
slouken@2713
   540
{
slouken@2713
   541
    if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
slouken@2713
   542
        return -1;
slouken@2713
   543
    }
slouken@2713
   544
slouken@2713
   545
    /* Run the effect */
slouken@2713
   546
    if (SDL_SYS_HapticRunEffect(haptic, &haptic->effects[effect], iterations)
slouken@2713
   547
        < 0) {
slouken@2713
   548
        return -1;
slouken@2713
   549
    }
slouken@2713
   550
slouken@2713
   551
    return 0;
slouken@2713
   552
}
slouken@2713
   553
slouken@2713
   554
/*
slouken@2713
   555
 * Stops the haptic effect on the device.
slouken@2713
   556
 */
slouken@2713
   557
int
slouken@2713
   558
SDL_HapticStopEffect(SDL_Haptic * haptic, int effect)
slouken@2713
   559
{
slouken@2713
   560
    if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
slouken@2713
   561
        return -1;
slouken@2713
   562
    }
slouken@2713
   563
slouken@2713
   564
    /* Stop the effect */
slouken@2713
   565
    if (SDL_SYS_HapticStopEffect(haptic, &haptic->effects[effect]) < 0) {
slouken@2713
   566
        return -1;
slouken@2713
   567
    }
slouken@2713
   568
slouken@2713
   569
    return 0;
slouken@2713
   570
}
slouken@2713
   571
slouken@2713
   572
/*
slouken@2713
   573
 * Gets rid of a haptic effect.
slouken@2713
   574
 */
slouken@2713
   575
void
slouken@2713
   576
SDL_HapticDestroyEffect(SDL_Haptic * haptic, int effect)
slouken@2713
   577
{
slouken@2713
   578
    if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
slouken@2713
   579
        return;
slouken@2713
   580
    }
slouken@2713
   581
slouken@2713
   582
    /* Not allocated */
slouken@2713
   583
    if (haptic->effects[effect].hweffect == NULL) {
slouken@2713
   584
        return;
slouken@2713
   585
    }
slouken@2713
   586
slouken@2713
   587
    SDL_SYS_HapticDestroyEffect(haptic, &haptic->effects[effect]);
slouken@2713
   588
}
slouken@2713
   589
slouken@2713
   590
/*
slouken@2713
   591
 * Gets the status of a haptic effect.
slouken@2713
   592
 */
slouken@2713
   593
int
slouken@2713
   594
SDL_HapticGetEffectStatus(SDL_Haptic * haptic, int effect)
slouken@2713
   595
{
slouken@2713
   596
    if (!ValidHaptic(haptic) || !ValidEffect(haptic, effect)) {
slouken@2713
   597
        return -1;
slouken@2713
   598
    }
slouken@2713
   599
slouken@2713
   600
    if ((haptic->supported & SDL_HAPTIC_STATUS) == 0) {
icculus@7037
   601
        return SDL_SetError("Haptic: Device does not support status queries.");
slouken@2713
   602
    }
slouken@2713
   603
slouken@2713
   604
    return SDL_SYS_HapticGetEffectStatus(haptic, &haptic->effects[effect]);
slouken@2713
   605
}
slouken@2713
   606
slouken@2713
   607
/*
slouken@2713
   608
 * Sets the global gain of the device.
slouken@2713
   609
 */
slouken@2713
   610
int
slouken@2713
   611
SDL_HapticSetGain(SDL_Haptic * haptic, int gain)
slouken@2713
   612
{
slouken@2713
   613
    const char *env;
slouken@2713
   614
    int real_gain, max_gain;
slouken@2713
   615
slouken@2713
   616
    if (!ValidHaptic(haptic)) {
slouken@2713
   617
        return -1;
slouken@2713
   618
    }
slouken@2713
   619
slouken@2713
   620
    if ((haptic->supported & SDL_HAPTIC_GAIN) == 0) {
icculus@7037
   621
        return SDL_SetError("Haptic: Device does not support setting gain.");
slouken@2713
   622
    }
slouken@2713
   623
slouken@2713
   624
    if ((gain < 0) || (gain > 100)) {
icculus@7037
   625
        return SDL_SetError("Haptic: Gain must be between 0 and 100.");
slouken@2713
   626
    }
slouken@2713
   627
slouken@2713
   628
    /* We use the envvar to get the maximum gain. */
slouken@2713
   629
    env = SDL_getenv("SDL_HAPTIC_GAIN_MAX");
slouken@2713
   630
    if (env != NULL) {
slouken@2713
   631
        max_gain = SDL_atoi(env);
slouken@2713
   632
slouken@2713
   633
        /* Check for sanity. */
slouken@2713
   634
        if (max_gain < 0)
slouken@2713
   635
            max_gain = 0;
slouken@2713
   636
        else if (max_gain > 100)
slouken@2713
   637
            max_gain = 100;
slouken@2713
   638
slouken@2713
   639
        /* We'll scale it linearly with SDL_HAPTIC_GAIN_MAX */
slouken@2713
   640
        real_gain = (gain * max_gain) / 100;
slouken@2713
   641
    } else {
slouken@2713
   642
        real_gain = gain;
slouken@2713
   643
    }
slouken@2713
   644
slouken@2713
   645
    if (SDL_SYS_HapticSetGain(haptic, real_gain) < 0) {
slouken@2713
   646
        return -1;
slouken@2713
   647
    }
slouken@2713
   648
slouken@2713
   649
    return 0;
slouken@2713
   650
}
slouken@2713
   651
slouken@2713
   652
/*
slouken@2713
   653
 * Makes the device autocenter, 0 disables.
slouken@2713
   654
 */
slouken@2713
   655
int
slouken@2713
   656
SDL_HapticSetAutocenter(SDL_Haptic * haptic, int autocenter)
slouken@2713
   657
{
slouken@2713
   658
    if (!ValidHaptic(haptic)) {
slouken@2713
   659
        return -1;
slouken@2713
   660
    }
slouken@2713
   661
slouken@2713
   662
    if ((haptic->supported & SDL_HAPTIC_AUTOCENTER) == 0) {
icculus@7037
   663
        return SDL_SetError("Haptic: Device does not support setting autocenter.");
slouken@2713
   664
    }
slouken@2713
   665
slouken@2713
   666
    if ((autocenter < 0) || (autocenter > 100)) {
icculus@7037
   667
        return SDL_SetError("Haptic: Autocenter must be between 0 and 100.");
slouken@2713
   668
    }
slouken@2713
   669
slouken@2713
   670
    if (SDL_SYS_HapticSetAutocenter(haptic, autocenter) < 0) {
slouken@2713
   671
        return -1;
slouken@2713
   672
    }
slouken@2713
   673
slouken@2713
   674
    return 0;
slouken@2713
   675
}
slouken@2713
   676
slouken@2713
   677
/*
slouken@2713
   678
 * Pauses the haptic device.
slouken@2713
   679
 */
slouken@2713
   680
int
slouken@2713
   681
SDL_HapticPause(SDL_Haptic * haptic)
slouken@2713
   682
{
slouken@2713
   683
    if (!ValidHaptic(haptic)) {
slouken@2713
   684
        return -1;
slouken@2713
   685
    }
slouken@2713
   686
slouken@2713
   687
    if ((haptic->supported & SDL_HAPTIC_PAUSE) == 0) {
icculus@7037
   688
        return SDL_SetError("Haptic: Device does not support setting pausing.");
slouken@2713
   689
    }
slouken@2713
   690
slouken@2713
   691
    return SDL_SYS_HapticPause(haptic);
slouken@2713
   692
}
slouken@2713
   693
slouken@2713
   694
/*
slouken@2713
   695
 * Unpauses the haptic device.
slouken@2713
   696
 */
slouken@2713
   697
int
slouken@2713
   698
SDL_HapticUnpause(SDL_Haptic * haptic)
slouken@2713
   699
{
slouken@2713
   700
    if (!ValidHaptic(haptic)) {
slouken@2713
   701
        return -1;
slouken@2713
   702
    }
slouken@2713
   703
slouken@2713
   704
    if ((haptic->supported & SDL_HAPTIC_PAUSE) == 0) {
slouken@2713
   705
        return 0;               /* Not going to be paused, so we pretend it's unpaused. */
slouken@2713
   706
    }
slouken@2713
   707
slouken@2713
   708
    return SDL_SYS_HapticUnpause(haptic);
slouken@2713
   709
}
slouken@2713
   710
slouken@2713
   711
/*
slouken@2713
   712
 * Stops all the currently playing effects.
slouken@2713
   713
 */
slouken@2713
   714
int
slouken@2713
   715
SDL_HapticStopAll(SDL_Haptic * haptic)
slouken@2713
   716
{
slouken@2713
   717
    if (!ValidHaptic(haptic)) {
slouken@2713
   718
        return -1;
slouken@2713
   719
    }
slouken@2713
   720
slouken@2713
   721
    return SDL_SYS_HapticStopAll(haptic);
slouken@2713
   722
}
slouken@5360
   723
slouken@5360
   724
/*
slouken@5360
   725
 * Checks to see if rumble is supported.
slouken@5360
   726
 */
slouken@5360
   727
int
slouken@5360
   728
SDL_HapticRumbleSupported(SDL_Haptic * haptic)
slouken@5360
   729
{
slouken@5360
   730
    if (!ValidHaptic(haptic)) {
slouken@5360
   731
        return -1;
slouken@5360
   732
    }
slouken@5360
   733
icculus@7621
   734
    /* Most things can use SINE, but XInput only has LEFTRIGHT. */
icculus@7621
   735
    return ((haptic->supported & (SDL_HAPTIC_SINE|SDL_HAPTIC_LEFTRIGHT)) != 0);
slouken@5360
   736
}
slouken@5360
   737
slouken@5360
   738
/*
slouken@5360
   739
 * Initializes the haptic device for simple rumble playback.
slouken@5360
   740
 */
slouken@5360
   741
int
slouken@5360
   742
SDL_HapticRumbleInit(SDL_Haptic * haptic)
slouken@5360
   743
{
icculus@7621
   744
    SDL_HapticEffect *efx = &haptic->rumble_effect;
icculus@7621
   745
slouken@5360
   746
    if (!ValidHaptic(haptic)) {
slouken@5360
   747
        return -1;
slouken@5360
   748
    }
slouken@5360
   749
slouken@5360
   750
    /* Already allocated. */
slouken@5360
   751
    if (haptic->rumble_id >= 0) {
slouken@5360
   752
        return 0;
slouken@5360
   753
    }
slouken@5360
   754
icculus@7621
   755
    SDL_zerop(efx);
icculus@7621
   756
    if (haptic->supported & SDL_HAPTIC_SINE) {
icculus@7621
   757
        efx->type = SDL_HAPTIC_SINE;
icculus@7621
   758
        efx->periodic.period = 1000;
icculus@7621
   759
        efx->periodic.magnitude = 0x4000;
icculus@7621
   760
        efx->periodic.length = 5000;
icculus@7621
   761
        efx->periodic.attack_length = 0;
icculus@7621
   762
        efx->periodic.fade_length = 0;
icculus@7621
   763
    } else if (haptic->supported & SDL_HAPTIC_LEFTRIGHT) {  /* XInput? */
icculus@7621
   764
        efx->type = SDL_HAPTIC_LEFTRIGHT;
icculus@7621
   765
        efx->leftright.length = 5000;
icculus@7621
   766
        efx->leftright.large_magnitude = 0x4000;
icculus@7621
   767
        efx->leftright.small_magnitude = 0x4000;
icculus@7621
   768
    } else {
icculus@7621
   769
        return SDL_SetError("Device doesn't support rumble");
icculus@7621
   770
    }
icculus@7621
   771
slouken@5360
   772
    haptic->rumble_id = SDL_HapticNewEffect(haptic, &haptic->rumble_effect);
slouken@5360
   773
    if (haptic->rumble_id >= 0) {
slouken@5360
   774
        return 0;
slouken@5360
   775
    }
slouken@5360
   776
    return -1;
slouken@5360
   777
}
slouken@5360
   778
slouken@5360
   779
/*
slouken@5360
   780
 * Runs simple rumble on a haptic device
slouken@5360
   781
 */
slouken@5360
   782
int
slouken@5360
   783
SDL_HapticRumblePlay(SDL_Haptic * haptic, float strength, Uint32 length)
slouken@5360
   784
{
icculus@7621
   785
    SDL_HapticEffect *efx;
icculus@7621
   786
    Sint16 magnitude;
slouken@5360
   787
slouken@5360
   788
    if (!ValidHaptic(haptic)) {
slouken@5360
   789
        return -1;
slouken@5360
   790
    }
slouken@5360
   791
slouken@5360
   792
    if (haptic->rumble_id < 0) {
icculus@7037
   793
        return SDL_SetError("Haptic: Rumble effect not initialized on haptic device");
slouken@5360
   794
    }
slouken@5360
   795
slouken@5360
   796
    /* Clamp strength. */
slouken@5360
   797
    if (strength > 1.0f) {
slouken@5360
   798
        strength = 1.0f;
icculus@7621
   799
    } else if (strength < 0.0f) {
slouken@5360
   800
        strength = 0.0f;
slouken@5360
   801
    }
icculus@7621
   802
    magnitude = (Sint16)(32767.0f*strength);
slouken@5360
   803
icculus@7621
   804
    efx = &haptic->rumble_effect;
icculus@7621
   805
    if (efx->type == SDL_HAPTIC_SINE) {
icculus@7621
   806
        efx->periodic.magnitude = magnitude;
icculus@7621
   807
        efx->periodic.length = length;
icculus@7621
   808
    } else if (efx->type == SDL_HAPTIC_LEFTRIGHT) {
icculus@7621
   809
        efx->leftright.small_magnitude = efx->leftright.large_magnitude = magnitude;
icculus@7621
   810
        efx->leftright.length = length;
icculus@7621
   811
    } else {
icculus@7621
   812
        SDL_assert(0 && "This should have been caught elsewhere");
icculus@7621
   813
    }
icculus@7621
   814
philipp@7531
   815
    if (SDL_HapticUpdateEffect(haptic, haptic->rumble_id, &haptic->rumble_effect) < 0) {
philipp@7531
   816
        return -1;
slouken@7524
   817
    }
slouken@5360
   818
slouken@5360
   819
    return SDL_HapticRunEffect(haptic, haptic->rumble_id, 1);
slouken@5360
   820
}
slouken@5360
   821
slouken@5360
   822
/*
slouken@5360
   823
 * Stops the simple rumble on a haptic device.
slouken@5360
   824
 */
slouken@5360
   825
int
slouken@5360
   826
SDL_HapticRumbleStop(SDL_Haptic * haptic)
slouken@5360
   827
{
slouken@5360
   828
    if (!ValidHaptic(haptic)) {
slouken@5360
   829
        return -1;
slouken@5360
   830
    }
slouken@5360
   831
slouken@5360
   832
    if (haptic->rumble_id < 0) {
icculus@7037
   833
        return SDL_SetError("Haptic: Rumble effect not initialized on haptic device");
slouken@5360
   834
    }
slouken@5360
   835
slouken@5360
   836
    return SDL_HapticStopEffect(haptic, haptic->rumble_id);
slouken@5360
   837
}
slouken@5360
   838