src/joystick/bsd/SDL_sysjoystick.c
author Philipp Wiesemann <philipp.wiesemann@arcor.de>
Wed, 15 Apr 2015 21:29:55 +0200
changeset 9561 d8ad01792399
parent 9433 bd062398b648
child 9619 b94b6d0bff0f
permissions -rw-r--r--
Fixed typo in internal joystick documentation comments.
slouken@278
     1
/*
slouken@5535
     2
  Simple DirectMedia Layer
slouken@8149
     3
  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
slouken@278
     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@278
     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@278
    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@278
    20
*/
icculus@8093
    21
#include "../../SDL_internal.h"
slouken@278
    22
slouken@1635
    23
#ifdef SDL_JOYSTICK_USBHID
slouken@1635
    24
slouken@278
    25
/*
slouken@278
    26
 * Joystick driver for the uhid(4) interface found in OpenBSD,
slouken@278
    27
 * NetBSD and FreeBSD.
slouken@278
    28
 *
slouken@278
    29
 * Maintainer: <vedge at csoft.org>
slouken@278
    30
 */
slouken@278
    31
slouken@552
    32
#include <sys/param.h>
slouken@552
    33
slouken@278
    34
#include <unistd.h>
slouken@278
    35
#include <fcntl.h>
slouken@278
    36
#include <errno.h>
slouken@278
    37
slouken@3367
    38
#ifndef __FreeBSD_kernel_version
slouken@3367
    39
#define __FreeBSD_kernel_version __FreeBSD_version
slouken@3367
    40
#endif
slouken@3367
    41
slouken@403
    42
#if defined(HAVE_USB_H)
slouken@403
    43
#include <usb.h>
slouken@403
    44
#endif
slouken@1565
    45
#ifdef __DragonFly__
slouken@1565
    46
#include <bus/usb/usb.h>
slouken@1565
    47
#include <bus/usb/usbhid.h>
slouken@1565
    48
#else
slouken@278
    49
#include <dev/usb/usb.h>
slouken@278
    50
#include <dev/usb/usbhid.h>
slouken@1565
    51
#endif
slouken@358
    52
slouken@381
    53
#if defined(HAVE_USBHID_H)
slouken@381
    54
#include <usbhid.h>
slouken@381
    55
#elif defined(HAVE_LIBUSB_H)
slouken@381
    56
#include <libusb.h>
slouken@381
    57
#elif defined(HAVE_LIBUSBHID_H)
slouken@381
    58
#include <libusbhid.h>
slouken@358
    59
#endif
slouken@278
    60
slouken@4944
    61
#if defined(__FREEBSD__) || defined(__FreeBSD_kernel__)
slouken@1565
    62
#ifndef __DragonFly__
slouken@611
    63
#include <osreldate.h>
slouken@1565
    64
#endif
icculus@6080
    65
#if __FreeBSD_kernel_version > 800063
icculus@6080
    66
#include <dev/usb/usb_ioctl.h>
icculus@6080
    67
#endif
slouken@776
    68
#include <sys/joystick.h>
slouken@776
    69
#endif
slouken@776
    70
slouken@1565
    71
#if SDL_JOYSTICK_USBHID_MACHINE_JOYSTICK_H
slouken@776
    72
#include <machine/joystick.h>
slouken@611
    73
#endif
slouken@611
    74
slouken@278
    75
#include "SDL_joystick.h"
slouken@1361
    76
#include "../SDL_sysjoystick.h"
slouken@1361
    77
#include "../SDL_joystick_c.h"
slouken@278
    78
slouken@7191
    79
#define MAX_UHID_JOYS   16
slouken@7191
    80
#define MAX_JOY_JOYS    2
slouken@7191
    81
#define MAX_JOYS    (MAX_UHID_JOYS + MAX_JOY_JOYS)
slouken@278
    82
slouken@3385
    83
slouken@1895
    84
struct report
slouken@1895
    85
{
slouken@6963
    86
#if defined(__FREEBSD__) && (__FreeBSD_kernel_version > 900000)
slouken@6963
    87
    void *buf; /* Buffer */
slouken@6963
    88
#elif defined(__FREEBSD__) && (__FreeBSD_kernel_version > 800063)
icculus@6080
    89
    struct usb_gen_descriptor *buf; /* Buffer */
icculus@6080
    90
#else
slouken@1895
    91
    struct usb_ctl_report *buf; /* Buffer */
icculus@6080
    92
#endif
slouken@1895
    93
    size_t size;                /* Buffer size */
slouken@1895
    94
    int rid;                    /* Report ID */
slouken@1895
    95
    enum
slouken@1895
    96
    {
slouken@1895
    97
        SREPORT_UNINIT,
slouken@1895
    98
        SREPORT_CLEAN,
slouken@1895
    99
        SREPORT_DIRTY
slouken@1895
   100
    } status;
slouken@278
   101
};
slouken@278
   102
slouken@1895
   103
static struct
slouken@1895
   104
{
slouken@1895
   105
    int uhid_report;
slouken@1895
   106
    hid_kind_t kind;
slouken@1895
   107
    const char *name;
slouken@278
   108
} const repinfo[] = {
slouken@1895
   109
    {UHID_INPUT_REPORT, hid_input, "input"},
slouken@1895
   110
    {UHID_OUTPUT_REPORT, hid_output, "output"},
slouken@1895
   111
    {UHID_FEATURE_REPORT, hid_feature, "feature"}
slouken@278
   112
};
slouken@307
   113
slouken@1895
   114
enum
slouken@1895
   115
{
slouken@1895
   116
    REPORT_INPUT = 0,
slouken@1895
   117
    REPORT_OUTPUT = 1,
slouken@1895
   118
    REPORT_FEATURE = 2
slouken@307
   119
};
slouken@307
   120
slouken@1895
   121
enum
slouken@1895
   122
{
slouken@1895
   123
    JOYAXE_X,
slouken@1895
   124
    JOYAXE_Y,
slouken@1895
   125
    JOYAXE_Z,
slouken@1895
   126
    JOYAXE_SLIDER,
slouken@1895
   127
    JOYAXE_WHEEL,
slouken@1895
   128
    JOYAXE_RX,
slouken@1895
   129
    JOYAXE_RY,
slouken@1895
   130
    JOYAXE_RZ,
slouken@1895
   131
    JOYAXE_count
slouken@307
   132
};
slouken@278
   133
slouken@1895
   134
struct joystick_hwdata
slouken@1895
   135
{
slouken@1895
   136
    int fd;
slouken@1895
   137
    char *path;
slouken@1895
   138
    enum
slouken@1895
   139
    {
slouken@1895
   140
        BSDJOY_UHID,            /* uhid(4) */
slouken@1895
   141
        BSDJOY_JOY              /* joy(4) */
slouken@1895
   142
    } type;
slouken@1895
   143
    struct report_desc *repdesc;
slouken@1895
   144
    struct report inreport;
slouken@1895
   145
    int axis_map[JOYAXE_count]; /* map present JOYAXE_* to 0,1,.. */
slouken@278
   146
};
slouken@278
   147
slouken@278
   148
static char *joynames[MAX_JOYS];
slouken@278
   149
static char *joydevnames[MAX_JOYS];
slouken@278
   150
slouken@1895
   151
static int report_alloc(struct report *, struct report_desc *, int);
slouken@1895
   152
static void report_free(struct report *);
slouken@278
   153
slouken@6963
   154
#if defined(USBHID_UCR_DATA) || (defined(__FreeBSD_kernel__) && __FreeBSD_kernel_version <= 800063)
slouken@381
   155
#define REP_BUF_DATA(rep) ((rep)->buf->ucr_data)
slouken@6963
   156
#elif (defined(__FREEBSD__) && (__FreeBSD_kernel_version > 900000))
slouken@6963
   157
#define REP_BUF_DATA(rep) ((rep)->buf)
icculus@6080
   158
#elif (defined(__FREEBSD__) && (__FreeBSD_kernel_version > 800063))
icculus@6080
   159
#define REP_BUF_DATA(rep) ((rep)->buf->ugd_data)
slouken@381
   160
#else
slouken@381
   161
#define REP_BUF_DATA(rep) ((rep)->buf->data)
slouken@381
   162
#endif
slouken@381
   163
slouken@6707
   164
static int SDL_SYS_numjoysticks = 0;
slouken@6697
   165
slouken@278
   166
int
slouken@278
   167
SDL_SYS_JoystickInit(void)
slouken@278
   168
{
slouken@1895
   169
    char s[16];
slouken@1895
   170
    int i, fd;
slouken@278
   171
slouken@6697
   172
    SDL_SYS_numjoysticks = 0;
slouken@278
   173
slouken@1895
   174
    SDL_memset(joynames, 0, sizeof(joynames));
slouken@1895
   175
    SDL_memset(joydevnames, 0, sizeof(joydevnames));
slouken@278
   176
slouken@1895
   177
    for (i = 0; i < MAX_UHID_JOYS; i++) {
slouken@1895
   178
        SDL_Joystick nj;
slouken@544
   179
slouken@1895
   180
        SDL_snprintf(s, SDL_arraysize(s), "/dev/uhid%d", i);
slouken@544
   181
slouken@6700
   182
        joynames[SDL_SYS_numjoysticks] = strdup(s);
slouken@544
   183
slouken@6700
   184
        if (SDL_SYS_JoystickOpen(&nj, SDL_SYS_numjoysticks) == 0) {
slouken@1895
   185
            SDL_SYS_JoystickClose(&nj);
slouken@6697
   186
            SDL_SYS_numjoysticks++;
slouken@1895
   187
        } else {
slouken@6700
   188
            SDL_free(joynames[SDL_SYS_numjoysticks]);
slouken@6700
   189
            joynames[SDL_SYS_numjoysticks] = NULL;
slouken@1895
   190
        }
slouken@1895
   191
    }
slouken@1895
   192
    for (i = 0; i < MAX_JOY_JOYS; i++) {
slouken@1895
   193
        SDL_snprintf(s, SDL_arraysize(s), "/dev/joy%d", i);
slouken@1895
   194
        fd = open(s, O_RDONLY);
slouken@1895
   195
        if (fd != -1) {
slouken@6697
   196
            joynames[SDL_SYS_numjoysticks++] = strdup(s);
slouken@1895
   197
            close(fd);
slouken@1895
   198
        }
slouken@1895
   199
    }
slouken@278
   200
slouken@1895
   201
    /* Read the default USB HID usage table. */
slouken@1895
   202
    hid_init(NULL);
slouken@278
   203
slouken@6697
   204
    return (SDL_SYS_numjoysticks);
slouken@278
   205
}
slouken@278
   206
slouken@6707
   207
int SDL_SYS_NumJoysticks()
slouken@6707
   208
{
slouken@6707
   209
    return SDL_SYS_numjoysticks;
slouken@6707
   210
}
slouken@6707
   211
slouken@6707
   212
void SDL_SYS_JoystickDetect()
slouken@6707
   213
{
slouken@6707
   214
}
slouken@6707
   215
slouken@278
   216
const char *
slouken@6707
   217
SDL_SYS_JoystickNameForDeviceIndex(int device_index)
slouken@278
   218
{
slouken@6707
   219
    if (joydevnames[device_index] != NULL) {
slouken@6707
   220
        return (joydevnames[device_index]);
slouken@1895
   221
    }
slouken@6707
   222
    return (joynames[device_index]);
slouken@6707
   223
}
slouken@6707
   224
slouken@6707
   225
/* Function to perform the mapping from device index to the instance id for this index */
slouken@6707
   226
SDL_JoystickID SDL_SYS_GetInstanceIdOfDeviceIndex(int device_index)
slouken@6707
   227
{
slouken@6707
   228
    return device_index;
slouken@278
   229
}
slouken@278
   230
slouken@632
   231
static int
slouken@632
   232
usage_to_joyaxe(unsigned usage)
slouken@632
   233
{
slouken@632
   234
    int joyaxe;
slouken@632
   235
    switch (usage) {
slouken@632
   236
    case HUG_X:
slouken@1895
   237
        joyaxe = JOYAXE_X;
slouken@1895
   238
        break;
slouken@632
   239
    case HUG_Y:
slouken@1895
   240
        joyaxe = JOYAXE_Y;
slouken@1895
   241
        break;
slouken@632
   242
    case HUG_Z:
slouken@1895
   243
        joyaxe = JOYAXE_Z;
slouken@1895
   244
        break;
slouken@632
   245
    case HUG_SLIDER:
slouken@1895
   246
        joyaxe = JOYAXE_SLIDER;
slouken@1895
   247
        break;
slouken@632
   248
    case HUG_WHEEL:
slouken@1895
   249
        joyaxe = JOYAXE_WHEEL;
slouken@1895
   250
        break;
slouken@632
   251
    case HUG_RX:
slouken@1895
   252
        joyaxe = JOYAXE_RX;
slouken@1895
   253
        break;
slouken@632
   254
    case HUG_RY:
slouken@1895
   255
        joyaxe = JOYAXE_RY;
slouken@1895
   256
        break;
slouken@632
   257
    case HUG_RZ:
slouken@1895
   258
        joyaxe = JOYAXE_RZ;
slouken@1895
   259
        break;
slouken@632
   260
    default:
slouken@1895
   261
        joyaxe = -1;
slouken@632
   262
    }
slouken@1895
   263
    return joyaxe;
slouken@632
   264
}
slouken@632
   265
slouken@632
   266
static unsigned
slouken@632
   267
hatval_to_sdl(Sint32 hatval)
slouken@632
   268
{
slouken@632
   269
    static const unsigned hat_dir_map[8] = {
slouken@1895
   270
        SDL_HAT_UP, SDL_HAT_RIGHTUP, SDL_HAT_RIGHT, SDL_HAT_RIGHTDOWN,
slouken@1895
   271
        SDL_HAT_DOWN, SDL_HAT_LEFTDOWN, SDL_HAT_LEFT, SDL_HAT_LEFTUP
slouken@632
   272
    };
slouken@632
   273
    unsigned result;
slouken@1895
   274
    if ((hatval & 7) == hatval)
slouken@1895
   275
        result = hat_dir_map[hatval];
slouken@1895
   276
    else
slouken@1895
   277
        result = SDL_HAT_CENTERED;
slouken@632
   278
    return result;
slouken@632
   279
}
slouken@632
   280
slouken@632
   281
slouken@278
   282
int
slouken@6697
   283
SDL_SYS_JoystickOpen(SDL_Joystick * joy, int device_index)
slouken@278
   284
{
slouken@6697
   285
    char *path = joynames[device_index];
slouken@1895
   286
    struct joystick_hwdata *hw;
slouken@1895
   287
    struct hid_item hitem;
slouken@1895
   288
    struct hid_data *hdata;
slouken@1895
   289
    struct report *rep;
slouken@1895
   290
    int fd;
slouken@1895
   291
    int i;
slouken@278
   292
slouken@1895
   293
    fd = open(path, O_RDONLY);
slouken@1895
   294
    if (fd == -1) {
icculus@7037
   295
        return SDL_SetError("%s: %s", path, strerror(errno));
slouken@1895
   296
    }
slouken@278
   297
slouken@6698
   298
    joy->instance_id = device_index;
slouken@1895
   299
    hw = (struct joystick_hwdata *)
slouken@1895
   300
        SDL_malloc(sizeof(struct joystick_hwdata));
slouken@1895
   301
    if (hw == NULL) {
slouken@1895
   302
        close(fd);
icculus@7037
   303
        return SDL_OutOfMemory();
slouken@1895
   304
    }
slouken@1895
   305
    joy->hwdata = hw;
slouken@1895
   306
    hw->fd = fd;
slouken@1895
   307
    hw->path = strdup(path);
slouken@1895
   308
    if (!SDL_strncmp(path, "/dev/joy", 8)) {
slouken@1895
   309
        hw->type = BSDJOY_JOY;
slouken@1895
   310
        joy->naxes = 2;
slouken@1895
   311
        joy->nbuttons = 2;
slouken@1895
   312
        joy->nhats = 0;
slouken@1895
   313
        joy->nballs = 0;
slouken@6700
   314
        joydevnames[device_index] = strdup("Gameport joystick");
slouken@1895
   315
        goto usbend;
slouken@1895
   316
    } else {
slouken@1895
   317
        hw->type = BSDJOY_UHID;
slouken@1895
   318
    }
slouken@776
   319
slouken@1895
   320
    {
slouken@1895
   321
        int ax;
slouken@1895
   322
        for (ax = 0; ax < JOYAXE_count; ax++)
slouken@1895
   323
            hw->axis_map[ax] = -1;
slouken@1895
   324
    }
slouken@1895
   325
    hw->repdesc = hid_get_report_desc(fd);
slouken@1895
   326
    if (hw->repdesc == NULL) {
slouken@1895
   327
        SDL_SetError("%s: USB_GET_REPORT_DESC: %s", hw->path,
slouken@1895
   328
                     strerror(errno));
slouken@1895
   329
        goto usberr;
slouken@1895
   330
    }
icculus@3703
   331
    rep = &hw->inreport;
slouken@4537
   332
#if defined(__FREEBSD__) && (__FreeBSD_kernel_version > 800063) || defined(__FreeBSD_kernel__)
slouken@3385
   333
    rep->rid = hid_get_report_id(fd);
slouken@3385
   334
    if (rep->rid < 0) {
slouken@3385
   335
#else
slouken@1895
   336
    if (ioctl(fd, USB_GET_REPORT_ID, &rep->rid) < 0) {
slouken@3385
   337
#endif
slouken@1895
   338
        rep->rid = -1;          /* XXX */
slouken@1895
   339
    }
slouken@1895
   340
    if (report_alloc(rep, hw->repdesc, REPORT_INPUT) < 0) {
slouken@1895
   341
        goto usberr;
slouken@1895
   342
    }
slouken@1895
   343
    if (rep->size <= 0) {
slouken@1895
   344
        SDL_SetError("%s: Input report descriptor has invalid length",
slouken@1895
   345
                     hw->path);
slouken@1895
   346
        goto usberr;
slouken@1895
   347
    }
slouken@4537
   348
#if defined(USBHID_NEW) || (defined(__FREEBSD__) && __FreeBSD_kernel_version >= 500111) || defined(__FreeBSD_kernel__)
slouken@1895
   349
    hdata = hid_start_parse(hw->repdesc, 1 << hid_input, rep->rid);
slouken@1895
   350
#else
slouken@1895
   351
    hdata = hid_start_parse(hw->repdesc, 1 << hid_input);
slouken@1895
   352
#endif
slouken@1895
   353
    if (hdata == NULL) {
slouken@1895
   354
        SDL_SetError("%s: Cannot start HID parser", hw->path);
slouken@1895
   355
        goto usberr;
slouken@1895
   356
    }
slouken@1895
   357
    joy->naxes = 0;
slouken@1895
   358
    joy->nbuttons = 0;
slouken@1895
   359
    joy->nhats = 0;
slouken@1895
   360
    joy->nballs = 0;
slouken@1895
   361
    for (i = 0; i < JOYAXE_count; i++)
slouken@1895
   362
        hw->axis_map[i] = -1;
slouken@278
   363
slouken@1895
   364
    while (hid_get_item(hdata, &hitem) > 0) {
slouken@1895
   365
        char *sp;
slouken@1895
   366
        const char *s;
slouken@278
   367
slouken@1895
   368
        switch (hitem.kind) {
slouken@1895
   369
        case hid_collection:
slouken@1895
   370
            switch (HID_PAGE(hitem.usage)) {
slouken@1895
   371
            case HUP_GENERIC_DESKTOP:
slouken@1895
   372
                switch (HID_USAGE(hitem.usage)) {
slouken@1895
   373
                case HUG_JOYSTICK:
slouken@1895
   374
                case HUG_GAME_PAD:
slouken@1895
   375
                    s = hid_usage_in_page(hitem.usage);
slouken@1895
   376
                    sp = SDL_malloc(SDL_strlen(s) + 5);
slouken@1895
   377
                    SDL_snprintf(sp, SDL_strlen(s) + 5, "%s (%d)",
slouken@6700
   378
                                 s, device_index);
slouken@6700
   379
                    joydevnames[device_index] = sp;
slouken@1895
   380
                }
slouken@1895
   381
            }
slouken@1895
   382
            break;
slouken@1895
   383
        case hid_input:
slouken@1895
   384
            switch (HID_PAGE(hitem.usage)) {
slouken@1895
   385
            case HUP_GENERIC_DESKTOP:
slouken@1895
   386
                {
slouken@1895
   387
                    unsigned usage = HID_USAGE(hitem.usage);
slouken@1895
   388
                    int joyaxe = usage_to_joyaxe(usage);
slouken@1895
   389
                    if (joyaxe >= 0) {
slouken@1895
   390
                        hw->axis_map[joyaxe] = 1;
slouken@1895
   391
                    } else if (usage == HUG_HAT_SWITCH) {
slouken@1895
   392
                        joy->nhats++;
slouken@1895
   393
                    }
slouken@1895
   394
                    break;
slouken@1895
   395
                }
slouken@1895
   396
            case HUP_BUTTON:
slouken@1895
   397
                joy->nbuttons++;
slouken@1895
   398
                break;
slouken@1895
   399
            default:
slouken@1895
   400
                break;
slouken@1895
   401
            }
slouken@1895
   402
            break;
slouken@1895
   403
        default:
slouken@1895
   404
            break;
slouken@1895
   405
        }
slouken@1895
   406
    }
slouken@1895
   407
    hid_end_parse(hdata);
slouken@1895
   408
    for (i = 0; i < JOYAXE_count; i++)
slouken@1895
   409
        if (hw->axis_map[i] > 0)
slouken@1895
   410
            hw->axis_map[i] = joy->naxes++;
slouken@278
   411
slouken@1895
   412
  usbend:
slouken@1895
   413
    /* The poll blocks the event thread. */
slouken@1895
   414
    fcntl(fd, F_SETFL, O_NONBLOCK);
slouken@278
   415
slouken@1895
   416
    return (0);
slouken@1895
   417
  usberr:
slouken@1895
   418
    close(hw->fd);
slouken@1895
   419
    SDL_free(hw->path);
slouken@1895
   420
    SDL_free(hw);
slouken@1895
   421
    return (-1);
slouken@278
   422
}
slouken@278
   423
philipp@9561
   424
/* Function to determine if this joystick is attached to the system right now */
slouken@6707
   425
SDL_bool SDL_SYS_JoystickAttached(SDL_Joystick *joystick)
slouken@6707
   426
{
slouken@6707
   427
    return SDL_TRUE;
slouken@6707
   428
}
slouken@6707
   429
slouken@278
   430
void
slouken@1895
   431
SDL_SYS_JoystickUpdate(SDL_Joystick * joy)
slouken@278
   432
{
slouken@1895
   433
    struct hid_item hitem;
slouken@1895
   434
    struct hid_data *hdata;
slouken@1895
   435
    struct report *rep;
slouken@1895
   436
    int nbutton, naxe = -1;
slouken@1895
   437
    Sint32 v;
slouken@776
   438
slouken@4537
   439
#if defined(__FREEBSD__) || SDL_JOYSTICK_USBHID_MACHINE_JOYSTICK_H || defined(__FreeBSD_kernel__)
slouken@1895
   440
    struct joystick gameport;
slouken@1895
   441
    static int x, y, xmin = 0xffff, ymin = 0xffff, xmax = 0, ymax = 0;
slouken@1895
   442
slouken@1895
   443
    if (joy->hwdata->type == BSDJOY_JOY) {
slouken@7733
   444
        while (read(joy->hwdata->fd, &gameport, sizeof gameport) == sizeof gameport) {
slouken@7733
   445
            if (abs(x - gameport.x) > 8) {
slouken@7733
   446
                x = gameport.x;
slouken@7733
   447
                if (x < xmin) {
slouken@7733
   448
                    xmin = x;
slouken@7733
   449
                }
slouken@7733
   450
                if (x > xmax) {
slouken@7733
   451
                    xmax = x;
slouken@7733
   452
                }
slouken@7733
   453
                if (xmin == xmax) {
slouken@7733
   454
                    xmin--;
slouken@7733
   455
                    xmax++;
slouken@7733
   456
                }
slouken@7733
   457
                v = (Sint32) x;
slouken@7733
   458
                v -= (xmax + xmin + 1) / 2;
slouken@7733
   459
                v *= 32768 / ((xmax - xmin + 1) / 2);
slouken@7733
   460
                SDL_PrivateJoystickAxis(joy, 0, v);
slouken@1895
   461
            }
slouken@7733
   462
            if (abs(y - gameport.y) > 8) {
slouken@7733
   463
                y = gameport.y;
slouken@7733
   464
                if (y < ymin) {
slouken@7733
   465
                    ymin = y;
slouken@7733
   466
                }
slouken@7733
   467
                if (y > ymax) {
slouken@7733
   468
                    ymax = y;
slouken@7733
   469
                }
slouken@7733
   470
                if (ymin == ymax) {
slouken@7733
   471
                    ymin--;
slouken@7733
   472
                    ymax++;
slouken@7733
   473
                }
slouken@7733
   474
                v = (Sint32) y;
slouken@7733
   475
                v -= (ymax + ymin + 1) / 2;
slouken@7733
   476
                v *= 32768 / ((ymax - ymin + 1) / 2);
slouken@7733
   477
                SDL_PrivateJoystickAxis(joy, 1, v);
slouken@1895
   478
            }
slouken@7733
   479
            if (gameport.b1 != joy->buttons[0]) {
slouken@7733
   480
                SDL_PrivateJoystickButton(joy, 0, gameport.b1);
slouken@1895
   481
            }
slouken@7733
   482
            if (gameport.b2 != joy->buttons[1]) {
slouken@7733
   483
                SDL_PrivateJoystickButton(joy, 1, gameport.b2);
slouken@1895
   484
            }
slouken@1895
   485
        }
slouken@1895
   486
        return;
slouken@1895
   487
    }
slouken@1565
   488
#endif /* defined(__FREEBSD__) || SDL_JOYSTICK_USBHID_MACHINE_JOYSTICK_H */
slouken@381
   489
slouken@1895
   490
    rep = &joy->hwdata->inreport;
slouken@1895
   491
slouken@7733
   492
    while (read(joy->hwdata->fd, REP_BUF_DATA(rep), rep->size) == rep->size) {
slouken@4537
   493
#if defined(USBHID_NEW) || (defined(__FREEBSD__) && __FreeBSD_kernel_version >= 500111) || defined(__FreeBSD_kernel__)
slouken@7733
   494
        hdata = hid_start_parse(joy->hwdata->repdesc, 1 << hid_input, rep->rid);
slouken@407
   495
#else
slouken@7733
   496
        hdata = hid_start_parse(joy->hwdata->repdesc, 1 << hid_input);
slouken@407
   497
#endif
slouken@7733
   498
        if (hdata == NULL) {
slouken@7733
   499
            /*fprintf(stderr, "%s: Cannot start HID parser\n", joy->hwdata->path);*/
slouken@7733
   500
            continue;
slouken@7733
   501
        }
slouken@278
   502
slouken@7733
   503
        for (nbutton = 0; hid_get_item(hdata, &hitem) > 0;) {
slouken@7733
   504
            switch (hitem.kind) {
slouken@7733
   505
            case hid_input:
slouken@7733
   506
                switch (HID_PAGE(hitem.usage)) {
slouken@7733
   507
                case HUP_GENERIC_DESKTOP:
slouken@7733
   508
                    {
slouken@7733
   509
                        unsigned usage = HID_USAGE(hitem.usage);
slouken@7733
   510
                        int joyaxe = usage_to_joyaxe(usage);
slouken@7733
   511
                        if (joyaxe >= 0) {
slouken@7733
   512
                            naxe = joy->hwdata->axis_map[joyaxe];
slouken@7733
   513
                            /* scaleaxe */
slouken@7733
   514
                            v = (Sint32) hid_get_data(REP_BUF_DATA(rep), &hitem);
slouken@7733
   515
                            v -= (hitem.logical_maximum +
slouken@7733
   516
                                  hitem.logical_minimum + 1) / 2;
slouken@7733
   517
                            v *= 32768 /
slouken@7733
   518
                                ((hitem.logical_maximum -
slouken@7733
   519
                                  hitem.logical_minimum + 1) / 2);
slouken@7733
   520
                            if (v != joy->axes[naxe]) {
slouken@7733
   521
                                SDL_PrivateJoystickAxis(joy, naxe, v);
slouken@7733
   522
                            }
slouken@7733
   523
                        } else if (usage == HUG_HAT_SWITCH) {
slouken@7733
   524
                            v = (Sint32) hid_get_data(REP_BUF_DATA(rep), &hitem);
slouken@7733
   525
                            SDL_PrivateJoystickHat(joy, 0,
slouken@7733
   526
                                                   hatval_to_sdl(v) -
slouken@7733
   527
                                                   hitem.logical_minimum);
slouken@1895
   528
                        }
slouken@7733
   529
                        break;
slouken@1895
   530
                    }
slouken@7733
   531
                case HUP_BUTTON:
slouken@7733
   532
                    v = (Sint32) hid_get_data(REP_BUF_DATA(rep), &hitem);
slouken@7733
   533
                    if (joy->buttons[nbutton] != v) {
slouken@7733
   534
                        SDL_PrivateJoystickButton(joy, nbutton, v);
slouken@7733
   535
                    }
slouken@7733
   536
                    nbutton++;
slouken@1895
   537
                    break;
slouken@7733
   538
                default:
slouken@7733
   539
                    continue;
slouken@1895
   540
                }
slouken@1895
   541
                break;
slouken@1895
   542
            default:
slouken@7733
   543
                break;
slouken@1895
   544
            }
slouken@1895
   545
        }
slouken@7733
   546
        hid_end_parse(hdata);
slouken@1895
   547
    }
slouken@278
   548
}
slouken@278
   549
slouken@278
   550
/* Function to close a joystick after use */
slouken@278
   551
void
slouken@1895
   552
SDL_SYS_JoystickClose(SDL_Joystick * joy)
slouken@278
   553
{
slouken@1895
   554
    if (SDL_strncmp(joy->hwdata->path, "/dev/joy", 8)) {
slouken@1895
   555
        report_free(&joy->hwdata->inreport);
slouken@1895
   556
        hid_dispose_report_desc(joy->hwdata->repdesc);
slouken@1895
   557
    }
slouken@1895
   558
    close(joy->hwdata->fd);
slouken@1895
   559
    SDL_free(joy->hwdata->path);
slouken@1895
   560
    SDL_free(joy->hwdata);
slouken@278
   561
}
slouken@278
   562
slouken@278
   563
void
slouken@278
   564
SDL_SYS_JoystickQuit(void)
slouken@278
   565
{
slouken@1895
   566
    int i;
slouken@278
   567
slouken@1895
   568
    for (i = 0; i < MAX_JOYS; i++) {
slouken@7719
   569
        SDL_free(joynames[i]);
slouken@7719
   570
        SDL_free(joydevnames[i]);
slouken@1895
   571
    }
slouken@278
   572
slouken@1895
   573
    return;
slouken@278
   574
}
slouken@278
   575
slouken@6744
   576
SDL_JoystickGUID SDL_SYS_JoystickGetDeviceGUID( int device_index )
slouken@6697
   577
{
slouken@6744
   578
    SDL_JoystickGUID guid;
slouken@7191
   579
    /* the GUID is just the first 16 chars of the name for now */
slouken@6707
   580
    const char *name = SDL_SYS_JoystickNameForDeviceIndex( device_index );
slouken@6697
   581
    SDL_zero( guid );
slouken@6697
   582
    SDL_memcpy( &guid, name, SDL_min( sizeof(guid), SDL_strlen( name ) ) );
slouken@6697
   583
    return guid;
slouken@6697
   584
}
slouken@6697
   585
slouken@6744
   586
SDL_JoystickGUID SDL_SYS_JoystickGetGUID(SDL_Joystick * joystick)
slouken@6697
   587
{
slouken@6744
   588
    SDL_JoystickGUID guid;
slouken@7191
   589
    /* the GUID is just the first 16 chars of the name for now */
slouken@6697
   590
    const char *name = joystick->name;
slouken@6697
   591
    SDL_zero( guid );
slouken@6697
   592
    SDL_memcpy( &guid, name, SDL_min( sizeof(guid), SDL_strlen( name ) ) );
slouken@6697
   593
    return guid;
slouken@6697
   594
}
slouken@6697
   595
slouken@278
   596
static int
slouken@278
   597
report_alloc(struct report *r, struct report_desc *rd, int repind)
slouken@278
   598
{
slouken@1895
   599
    int len;
slouken@278
   600
slouken@1565
   601
#ifdef __DragonFly__
slouken@1895
   602
    len = hid_report_size(rd, r->rid, repinfo[repind].kind);
slouken@1565
   603
#elif __FREEBSD__
slouken@3366
   604
# if (__FreeBSD_kernel_version >= 460000) || defined(__FreeBSD_kernel__)
slouken@3366
   605
#  if (__FreeBSD_kernel_version <= 500111)
slouken@1895
   606
    len = hid_report_size(rd, r->rid, repinfo[repind].kind);
slouken@611
   607
#  else
slouken@1895
   608
    len = hid_report_size(rd, repinfo[repind].kind, r->rid);
slouken@611
   609
#  endif
slouken@552
   610
# else
slouken@1895
   611
    len = hid_report_size(rd, repinfo[repind].kind, &r->rid);
slouken@1565
   612
# endif
slouken@552
   613
#else
slouken@552
   614
# ifdef USBHID_NEW
slouken@1895
   615
    len = hid_report_size(rd, repinfo[repind].kind, r->rid);
slouken@1565
   616
# else
slouken@1895
   617
    len = hid_report_size(rd, repinfo[repind].kind, &r->rid);
slouken@552
   618
# endif
slouken@552
   619
#endif
slouken@552
   620
slouken@1895
   621
    if (len < 0) {
icculus@7037
   622
        return SDL_SetError("Negative HID report size");
slouken@1895
   623
    }
slouken@1895
   624
    r->size = len;
slouken@278
   625
slouken@1895
   626
    if (r->size > 0) {
slouken@6963
   627
#if defined(__FREEBSD__) && (__FreeBSD_kernel_version > 900000)
slouken@6963
   628
        r->buf = SDL_malloc(r->size);
slouken@6963
   629
#else
slouken@1895
   630
        r->buf = SDL_malloc(sizeof(*r->buf) - sizeof(REP_BUF_DATA(r)) +
slouken@1895
   631
                            r->size);
slouken@6963
   632
#endif
slouken@1895
   633
        if (r->buf == NULL) {
icculus@7037
   634
            return SDL_OutOfMemory();
slouken@1895
   635
        }
slouken@1895
   636
    } else {
slouken@1895
   637
        r->buf = NULL;
slouken@1895
   638
    }
slouken@278
   639
slouken@1895
   640
    r->status = SREPORT_CLEAN;
icculus@7037
   641
    return 0;
slouken@278
   642
}
slouken@278
   643
slouken@278
   644
static void
slouken@278
   645
report_free(struct report *r)
slouken@278
   646
{
slouken@7719
   647
    SDL_free(r->buf);
slouken@1895
   648
    r->status = SREPORT_UNINIT;
slouken@278
   649
}
slouken@278
   650
slouken@1635
   651
#endif /* SDL_JOYSTICK_USBHID */
slouken@6697
   652
slouken@1895
   653
/* vi: set ts=4 sw=4 expandtab: */