/
SDL_hidapijoystick.c
1055 lines (901 loc) · 32.9 KB
1
2
/*
Simple DirectMedia Layer
3
Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifdef SDL_JOYSTICK_HIDAPI
25
#include "SDL_assert.h"
26
#include "SDL_atomic.h"
27
28
29
#include "SDL_endian.h"
#include "SDL_hints.h"
#include "SDL_log.h"
30
#include "SDL_thread.h"
31
32
33
34
#include "SDL_timer.h"
#include "SDL_joystick.h"
#include "../SDL_sysjoystick.h"
#include "SDL_hidapijoystick_c.h"
35
#include "../../SDL_hints_c.h"
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
#if defined(__WIN32__)
#include "../../core/windows/SDL_windows.h"
#endif
#if defined(__MACOSX__)
#include <CoreFoundation/CoreFoundation.h>
#include <mach/mach.h>
#include <IOKit/IOKitLib.h>
#include <IOKit/usb/USBSpec.h>
#endif
#if defined(__LINUX__)
#include "../../core/linux/SDL_udev.h"
#ifdef SDL_USE_LIBUDEV
#include <poll.h>
#endif
#endif
54
55
struct joystick_hwdata
56
{
57
SDL_HIDAPI_Device *device;
58
59
};
60
61
62
63
64
65
66
67
68
69
70
71
static SDL_HIDAPI_DeviceDriver *SDL_HIDAPI_drivers[] = {
#ifdef SDL_JOYSTICK_HIDAPI_PS4
&SDL_HIDAPI_DriverPS4,
#endif
#ifdef SDL_JOYSTICK_HIDAPI_STEAM
&SDL_HIDAPI_DriverSteam,
#endif
#ifdef SDL_JOYSTICK_HIDAPI_SWITCH
&SDL_HIDAPI_DriverSwitch,
#endif
#ifdef SDL_JOYSTICK_HIDAPI_XBOX360
&SDL_HIDAPI_DriverXbox360,
72
&SDL_HIDAPI_DriverXbox360W,
73
74
75
76
#endif
#ifdef SDL_JOYSTICK_HIDAPI_XBOXONE
&SDL_HIDAPI_DriverXboxOne,
#endif
77
78
79
#ifdef SDL_JOYSTICK_HIDAPI_GAMECUBE
&SDL_HIDAPI_DriverGameCube,
#endif
80
};
81
static int SDL_HIDAPI_numdrivers = 0;
82
static SDL_SpinLock SDL_HIDAPI_spinlock;
83
84
static SDL_HIDAPI_Device *SDL_HIDAPI_devices;
static int SDL_HIDAPI_numjoysticks = 0;
85
static SDL_bool initialized = SDL_FALSE;
86
static SDL_bool shutting_down = SDL_FALSE;
87
88
89
90
91
#if defined(SDL_USE_LIBUDEV)
static const SDL_UDEV_Symbols * usyms = NULL;
#endif
92
93
94
95
96
97
98
static struct
{
SDL_bool m_bHaveDevicesChanged;
SDL_bool m_bCanGetNotifications;
Uint32 m_unLastDetect;
#if defined(__WIN32__)
99
SDL_threadID m_nThreadID;
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
WNDCLASSEXA m_wndClass;
HWND m_hwndMsg;
HDEVNOTIFY m_hNotify;
double m_flLastWin32MessageCheck;
#endif
#if defined(__MACOSX__)
IONotificationPortRef m_notificationPort;
mach_port_t m_notificationMach;
#endif
#if defined(SDL_USE_LIBUDEV)
struct udev *m_pUdev;
struct udev_monitor *m_pUdevMonitor;
int m_nUdevFd;
#endif
} SDL_HIDAPI_discovery;
#ifdef __WIN32__
struct _DEV_BROADCAST_HDR
{
DWORD dbch_size;
DWORD dbch_devicetype;
DWORD dbch_reserved;
};
typedef struct _DEV_BROADCAST_DEVICEINTERFACE_A
{
DWORD dbcc_size;
DWORD dbcc_devicetype;
DWORD dbcc_reserved;
GUID dbcc_classguid;
char dbcc_name[ 1 ];
} DEV_BROADCAST_DEVICEINTERFACE_A, *PDEV_BROADCAST_DEVICEINTERFACE_A;
typedef struct _DEV_BROADCAST_HDR DEV_BROADCAST_HDR;
#define DBT_DEVICEARRIVAL 0x8000 /* system detected a new device */
138
#define DBT_DEVICEREMOVECOMPLETE 0x8004 /* device was removed from the system */
139
140
141
142
#define DBT_DEVTYP_DEVICEINTERFACE 0x00000005 /* device interface class */
#define DBT_DEVNODES_CHANGED 0x0007
#define DBT_CONFIGCHANGED 0x0018
#define DBT_DEVICETYPESPECIFIC 0x8005 /* type specific event */
143
#define DBT_DEVINSTSTARTED 0x8008 /* device installed and started */
144
145
146
147
148
149
150
151
152
153
#include <initguid.h>
DEFINE_GUID(GUID_DEVINTERFACE_USB_DEVICE, 0xA5DCBF10L, 0x6530, 0x11D2, 0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED);
static LRESULT CALLBACK ControllerWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message) {
case WM_DEVICECHANGE:
switch (wParam) {
case DBT_DEVICEARRIVAL:
154
case DBT_DEVICEREMOVECOMPLETE:
155
if (((DEV_BROADCAST_HDR*)lParam)->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE) {
156
SDL_HIDAPI_discovery.m_bHaveDevicesChanged = SDL_TRUE;
157
158
159
}
break;
}
160
return TRUE;
161
162
163
164
165
166
167
168
}
return DefWindowProc(hwnd, message, wParam, lParam);
}
#endif /* __WIN32__ */
#if defined(__MACOSX__)
169
static void CallbackIOServiceFunc(void *context, io_iterator_t portIterator)
170
171
{
/* Must drain the iterator, or we won't receive new notifications */
172
173
io_object_t entry;
while ((entry = IOIteratorNext(portIterator)) != 0) {
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
IOObjectRelease(entry);
*(SDL_bool*)context = SDL_TRUE;
}
}
#endif /* __MACOSX__ */
static void
HIDAPI_InitializeDiscovery()
{
SDL_HIDAPI_discovery.m_bHaveDevicesChanged = SDL_TRUE;
SDL_HIDAPI_discovery.m_bCanGetNotifications = SDL_FALSE;
SDL_HIDAPI_discovery.m_unLastDetect = 0;
#if defined(__WIN32__)
SDL_HIDAPI_discovery.m_nThreadID = SDL_ThreadID();
SDL_memset(&SDL_HIDAPI_discovery.m_wndClass, 0x0, sizeof(SDL_HIDAPI_discovery.m_wndClass));
SDL_HIDAPI_discovery.m_wndClass.hInstance = GetModuleHandle(NULL);
192
SDL_HIDAPI_discovery.m_wndClass.lpszClassName = "SDL_HIDAPI_DEVICE_DETECTION";
193
194
195
196
SDL_HIDAPI_discovery.m_wndClass.lpfnWndProc = ControllerWndProc; /* This function is called by windows */
SDL_HIDAPI_discovery.m_wndClass.cbSize = sizeof(WNDCLASSEX);
RegisterClassExA(&SDL_HIDAPI_discovery.m_wndClass);
197
SDL_HIDAPI_discovery.m_hwndMsg = CreateWindowExA(0, "SDL_HIDAPI_DEVICE_DETECTION", NULL, 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, NULL, NULL);
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
{
DEV_BROADCAST_DEVICEINTERFACE_A devBroadcast;
SDL_memset( &devBroadcast, 0x0, sizeof( devBroadcast ) );
devBroadcast.dbcc_size = sizeof( devBroadcast );
devBroadcast.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
devBroadcast.dbcc_classguid = GUID_DEVINTERFACE_USB_DEVICE;
/* DEVICE_NOTIFY_ALL_INTERFACE_CLASSES is important, makes GUID_DEVINTERFACE_USB_DEVICE ignored,
* but that seems to be necessary to get a notice after each individual usb input device actually
* installs, rather than just as the composite device is seen.
*/
SDL_HIDAPI_discovery.m_hNotify = RegisterDeviceNotification( SDL_HIDAPI_discovery.m_hwndMsg, &devBroadcast, DEVICE_NOTIFY_WINDOW_HANDLE | DEVICE_NOTIFY_ALL_INTERFACE_CLASSES );
SDL_HIDAPI_discovery.m_bCanGetNotifications = ( SDL_HIDAPI_discovery.m_hNotify != 0 );
}
214
215
216
217
218
219
220
221
222
223
#endif /* __WIN32__ */
#if defined(__MACOSX__)
SDL_HIDAPI_discovery.m_notificationPort = IONotificationPortCreate(kIOMasterPortDefault);
if (SDL_HIDAPI_discovery.m_notificationPort) {
{
CFMutableDictionaryRef matchingDict = IOServiceMatching("IOUSBDevice");
/* Note: IOServiceAddMatchingNotification consumes the reference to matchingDict */
io_iterator_t portIterator = 0;
224
io_object_t entry;
225
226
if (IOServiceAddMatchingNotification(SDL_HIDAPI_discovery.m_notificationPort, kIOMatchedNotification, matchingDict, CallbackIOServiceFunc, &SDL_HIDAPI_discovery.m_bHaveDevicesChanged, &portIterator) == 0) {
/* Must drain the existing iterator, or we won't receive new notifications */
227
while ((entry = IOIteratorNext(portIterator)) != 0) {
228
229
230
231
232
233
234
235
236
237
238
239
IOObjectRelease(entry);
}
} else {
IONotificationPortDestroy(SDL_HIDAPI_discovery.m_notificationPort);
SDL_HIDAPI_discovery.m_notificationPort = nil;
}
}
{
CFMutableDictionaryRef matchingDict = IOServiceMatching("IOBluetoothDevice");
/* Note: IOServiceAddMatchingNotification consumes the reference to matchingDict */
io_iterator_t portIterator = 0;
240
io_object_t entry;
241
242
if (IOServiceAddMatchingNotification(SDL_HIDAPI_discovery.m_notificationPort, kIOMatchedNotification, matchingDict, CallbackIOServiceFunc, &SDL_HIDAPI_discovery.m_bHaveDevicesChanged, &portIterator) == 0) {
/* Must drain the existing iterator, or we won't receive new notifications */
243
while ((entry = IOIteratorNext(portIterator)) != 0) {
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
IOObjectRelease(entry);
}
} else {
IONotificationPortDestroy(SDL_HIDAPI_discovery.m_notificationPort);
SDL_HIDAPI_discovery.m_notificationPort = nil;
}
}
}
SDL_HIDAPI_discovery.m_notificationMach = MACH_PORT_NULL;
if (SDL_HIDAPI_discovery.m_notificationPort) {
SDL_HIDAPI_discovery.m_notificationMach = IONotificationPortGetMachPort(SDL_HIDAPI_discovery.m_notificationPort);
}
SDL_HIDAPI_discovery.m_bCanGetNotifications = (SDL_HIDAPI_discovery.m_notificationMach != MACH_PORT_NULL);
#endif // __MACOSX__
#if defined(SDL_USE_LIBUDEV)
SDL_HIDAPI_discovery.m_pUdev = NULL;
SDL_HIDAPI_discovery.m_pUdevMonitor = NULL;
SDL_HIDAPI_discovery.m_nUdevFd = -1;
267
268
269
270
usyms = SDL_UDEV_GetUdevSyms();
if (usyms) {
SDL_HIDAPI_discovery.m_pUdev = usyms->udev_new();
}
271
if (SDL_HIDAPI_discovery.m_pUdev) {
272
SDL_HIDAPI_discovery.m_pUdevMonitor = usyms->udev_monitor_new_from_netlink(SDL_HIDAPI_discovery.m_pUdev, "udev");
273
if (SDL_HIDAPI_discovery.m_pUdevMonitor) {
274
275
usyms->udev_monitor_enable_receiving(SDL_HIDAPI_discovery.m_pUdevMonitor);
SDL_HIDAPI_discovery.m_nUdevFd = usyms->udev_monitor_get_fd(SDL_HIDAPI_discovery.m_pUdevMonitor);
276
SDL_HIDAPI_discovery.m_bCanGetNotifications = SDL_TRUE;
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
}
}
#endif /* SDL_USE_LIBUDEV */
}
static void
HIDAPI_UpdateDiscovery()
{
if (!SDL_HIDAPI_discovery.m_bCanGetNotifications) {
const Uint32 SDL_HIDAPI_DETECT_INTERVAL_MS = 3000; /* Update every 3 seconds */
Uint32 now = SDL_GetTicks();
if (!SDL_HIDAPI_discovery.m_unLastDetect || SDL_TICKS_PASSED(now, SDL_HIDAPI_discovery.m_unLastDetect + SDL_HIDAPI_DETECT_INTERVAL_MS)) {
SDL_HIDAPI_discovery.m_bHaveDevicesChanged = SDL_TRUE;
SDL_HIDAPI_discovery.m_unLastDetect = now;
}
return;
}
296
297
#if defined(__WIN32__)
#if 0 /* just let the usual SDL_PumpEvents loop dispatch these, fixing bug 4286. --ryan. */
298
299
300
301
302
303
304
305
306
307
308
/* We'll only get messages on the same thread that created the window */
if (SDL_ThreadID() == SDL_HIDAPI_discovery.m_nThreadID) {
MSG msg;
while (PeekMessage(&msg, SDL_HIDAPI_discovery.m_hwndMsg, 0, 0, PM_NOREMOVE)) {
if (GetMessageA(&msg, SDL_HIDAPI_discovery.m_hwndMsg, 0, 0) != 0) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
}
#endif
309
#endif /* __WIN32__ */
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
#if defined(__MACOSX__)
if (SDL_HIDAPI_discovery.m_notificationPort) {
struct { mach_msg_header_t hdr; char payload[ 4096 ]; } msg;
while (mach_msg(&msg.hdr, MACH_RCV_MSG | MACH_RCV_TIMEOUT, 0, sizeof(msg), SDL_HIDAPI_discovery.m_notificationMach, 0, MACH_PORT_NULL) == KERN_SUCCESS) {
IODispatchCalloutFromMessage(NULL, &msg.hdr, SDL_HIDAPI_discovery.m_notificationPort);
}
}
#endif
#if defined(SDL_USE_LIBUDEV)
if (SDL_HIDAPI_discovery.m_nUdevFd >= 0) {
/* Drain all notification events.
* We don't expect a lot of device notifications so just
* do a new discovery on any kind or number of notifications.
* This could be made more restrictive if necessary.
*/
for (;;) {
struct pollfd PollUdev;
329
struct udev_device *pUdevDevice;
330
331
332
333
334
335
336
PollUdev.fd = SDL_HIDAPI_discovery.m_nUdevFd;
PollUdev.events = POLLIN;
if (poll(&PollUdev, 1, 0) != 1) {
break;
}
337
SDL_HIDAPI_discovery.m_bHaveDevicesChanged = SDL_TRUE;
338
339
pUdevDevice = usyms->udev_monitor_receive_device(SDL_HIDAPI_discovery.m_pUdevMonitor);
340
if (pUdevDevice) {
341
usyms->udev_device_unref(pUdevDevice);
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
}
}
}
#endif
}
static void
HIDAPI_ShutdownDiscovery()
{
#if defined(__WIN32__)
if (SDL_HIDAPI_discovery.m_hNotify)
UnregisterDeviceNotification(SDL_HIDAPI_discovery.m_hNotify);
if (SDL_HIDAPI_discovery.m_hwndMsg) {
DestroyWindow(SDL_HIDAPI_discovery.m_hwndMsg);
}
UnregisterClassA(SDL_HIDAPI_discovery.m_wndClass.lpszClassName, SDL_HIDAPI_discovery.m_wndClass.hInstance);
#endif
#if defined(__MACOSX__)
if (SDL_HIDAPI_discovery.m_notificationPort) {
IONotificationPortDestroy(SDL_HIDAPI_discovery.m_notificationPort);
}
#endif
#if defined(SDL_USE_LIBUDEV)
369
if (usyms) {
370
371
372
373
374
375
if (SDL_HIDAPI_discovery.m_pUdevMonitor) {
usyms->udev_monitor_unref(SDL_HIDAPI_discovery.m_pUdevMonitor);
}
if (SDL_HIDAPI_discovery.m_pUdev) {
usyms->udev_unref(SDL_HIDAPI_discovery.m_pUdev);
}
376
377
SDL_UDEV_ReleaseUdevSyms();
usyms = NULL;
378
379
380
381
}
#endif
}
382
383
384
static void HIDAPI_JoystickDetect(void);
static void HIDAPI_JoystickClose(SDL_Joystick * joystick);
385
static SDL_bool
386
HIDAPI_IsDeviceSupported(Uint16 vendor_id, Uint16 product_id, Uint16 version, const char *name)
387
388
389
390
391
{
int i;
for (i = 0; i < SDL_arraysize(SDL_HIDAPI_drivers); ++i) {
SDL_HIDAPI_DeviceDriver *driver = SDL_HIDAPI_drivers[i];
392
if (driver->enabled && driver->IsSupportedDevice(vendor_id, product_id, version, -1, name)) {
393
394
395
396
397
398
return SDL_TRUE;
}
}
return SDL_FALSE;
}
399
400
401
static SDL_HIDAPI_DeviceDriver *
HIDAPI_GetDeviceDriver(SDL_HIDAPI_Device *device)
{
402
403
404
405
const Uint16 USAGE_PAGE_GENERIC_DESKTOP = 0x0001;
const Uint16 USAGE_JOYSTICK = 0x0004;
const Uint16 USAGE_GAMEPAD = 0x0005;
const Uint16 USAGE_MULTIAXISCONTROLLER = 0x0008;
406
407
408
409
410
411
int i;
if (SDL_ShouldIgnoreJoystick(device->name, device->guid)) {
return NULL;
}
412
413
414
415
416
417
418
if (device->usage_page && device->usage_page != USAGE_PAGE_GENERIC_DESKTOP) {
return NULL;
}
if (device->usage && device->usage != USAGE_JOYSTICK && device->usage != USAGE_GAMEPAD && device->usage != USAGE_MULTIAXISCONTROLLER) {
return NULL;
}
419
420
for (i = 0; i < SDL_arraysize(SDL_HIDAPI_drivers); ++i) {
SDL_HIDAPI_DeviceDriver *driver = SDL_HIDAPI_drivers[i];
421
if (driver->enabled && driver->IsSupportedDevice(device->vendor_id, device->product_id, device->version, device->interface_number, device->name)) {
422
423
424
425
426
427
428
return driver;
}
}
return NULL;
}
static SDL_HIDAPI_Device *
429
HIDAPI_GetDeviceByIndex(int device_index, SDL_JoystickID *pJoystickID)
430
431
432
433
{
SDL_HIDAPI_Device *device = SDL_HIDAPI_devices;
while (device) {
if (device->driver) {
434
435
436
437
438
if (device_index < device->num_joysticks) {
if (pJoystickID) {
*pJoystickID = device->joysticks[device_index];
}
return device;
439
}
440
device_index -= device->num_joysticks;
441
442
443
}
device = device->next;
}
444
return NULL;
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
}
static SDL_HIDAPI_Device *
HIDAPI_GetJoystickByInfo(const char *path, Uint16 vendor_id, Uint16 product_id)
{
SDL_HIDAPI_Device *device = SDL_HIDAPI_devices;
while (device) {
if (device->vendor_id == vendor_id && device->product_id == product_id &&
SDL_strcmp(device->path, path) == 0) {
break;
}
device = device->next;
}
return device;
}
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
static void
HIDAPI_SetupDeviceDriver(SDL_HIDAPI_Device *device)
{
if (device->driver) {
/* Already setup */
return;
}
device->driver = HIDAPI_GetDeviceDriver(device);
if (device->driver) {
const char *name = device->driver->GetDeviceName(device->vendor_id, device->product_id);
if (name) {
SDL_free(device->name);
device->name = SDL_strdup(name);
}
}
/* Initialize the device, which may cause a connected event */
if (device->driver && !device->driver->InitDevice(device)) {
device->driver = NULL;
}
}
static void
HIDAPI_CleanupDeviceDriver(SDL_HIDAPI_Device *device)
{
if (!device->driver) {
/* Already cleaned up */
return;
}
/* Disconnect any joysticks */
493
494
while (device->num_joysticks) {
HIDAPI_JoystickDisconnected(device, device->joysticks[0]);
495
496
497
498
499
500
}
device->driver->FreeDevice(device);
device->driver = NULL;
}
501
502
503
504
505
static void SDLCALL
SDL_HIDAPIDriverHintChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
{
int i;
SDL_HIDAPI_Device *device = SDL_HIDAPI_devices;
506
SDL_bool enabled = SDL_GetStringBoolean(hint, SDL_TRUE);
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
if (SDL_strcmp(name, SDL_HINT_JOYSTICK_HIDAPI) == 0) {
for (i = 0; i < SDL_arraysize(SDL_HIDAPI_drivers); ++i) {
SDL_HIDAPI_DeviceDriver *driver = SDL_HIDAPI_drivers[i];
driver->enabled = SDL_GetHintBoolean(driver->hint, enabled);
}
} else {
for (i = 0; i < SDL_arraysize(SDL_HIDAPI_drivers); ++i) {
SDL_HIDAPI_DeviceDriver *driver = SDL_HIDAPI_drivers[i];
if (SDL_strcmp(name, driver->hint) == 0) {
driver->enabled = enabled;
break;
}
}
}
523
524
525
526
527
528
529
530
SDL_HIDAPI_numdrivers = 0;
for (i = 0; i < SDL_arraysize(SDL_HIDAPI_drivers); ++i) {
SDL_HIDAPI_DeviceDriver *driver = SDL_HIDAPI_drivers[i];
if (driver->enabled) {
++SDL_HIDAPI_numdrivers;
}
}
531
/* Update device list if driver availability changes */
532
SDL_LockJoysticks();
533
534
535
536
while (device) {
if (device->driver && !device->driver->enabled) {
HIDAPI_CleanupDeviceDriver(device);
537
}
538
HIDAPI_SetupDeviceDriver(device);
539
540
541
device = device->next;
}
542
SDL_UnlockJoysticks();
543
}
544
545
546
547
548
549
static int
HIDAPI_JoystickInit(void)
{
int i;
550
551
552
553
if (initialized) {
return 0;
}
554
555
556
557
558
559
560
561
562
563
564
if (hid_init() < 0) {
SDL_SetError("Couldn't initialize hidapi");
return -1;
}
for (i = 0; i < SDL_arraysize(SDL_HIDAPI_drivers); ++i) {
SDL_HIDAPI_DeviceDriver *driver = SDL_HIDAPI_drivers[i];
SDL_AddHintCallback(driver->hint, SDL_HIDAPIDriverHintChanged, NULL);
}
SDL_AddHintCallback(SDL_HINT_JOYSTICK_HIDAPI,
SDL_HIDAPIDriverHintChanged, NULL);
565
HIDAPI_InitializeDiscovery();
566
HIDAPI_JoystickDetect();
567
HIDAPI_UpdateDevices();
568
569
570
initialized = SDL_TRUE;
571
572
573
return 0;
}
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
SDL_bool
HIDAPI_JoystickConnected(SDL_HIDAPI_Device *device, SDL_JoystickID *pJoystickID)
{
SDL_JoystickID joystickID;
SDL_JoystickID *joysticks = (SDL_JoystickID *)SDL_realloc(device->joysticks, (device->num_joysticks + 1)*sizeof(*device->joysticks));
if (!joysticks) {
return SDL_FALSE;
}
joystickID = SDL_GetNextJoystickInstanceID();
device->joysticks = joysticks;
device->joysticks[device->num_joysticks++] = joystickID;
++SDL_HIDAPI_numjoysticks;
SDL_PrivateJoystickAdded(joystickID);
if (pJoystickID) {
*pJoystickID = joystickID;
}
return SDL_TRUE;
}
void
HIDAPI_JoystickDisconnected(SDL_HIDAPI_Device *device, SDL_JoystickID joystickID)
{
int i;
for (i = 0; i < device->num_joysticks; ++i) {
if (device->joysticks[i] == joystickID) {
603
604
605
606
607
SDL_Joystick *joystick = SDL_JoystickFromInstanceID(joystickID);
if (joystick) {
HIDAPI_JoystickClose(joystick);
}
608
609
610
611
612
613
614
615
616
617
618
619
SDL_memcpy(&device->joysticks[i], &device->joysticks[i+1], device->num_joysticks - i - 1);
--device->num_joysticks;
--SDL_HIDAPI_numjoysticks;
if (!shutting_down) {
SDL_PrivateJoystickRemoved(joystickID);
}
return;
}
}
}
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
static int
HIDAPI_JoystickGetCount(void)
{
return SDL_HIDAPI_numjoysticks;
}
static void
HIDAPI_AddDevice(struct hid_device_info *info)
{
SDL_HIDAPI_Device *device;
SDL_HIDAPI_Device *curr, *last = NULL;
for (curr = SDL_HIDAPI_devices, last = NULL; curr; last = curr, curr = curr->next) {
continue;
}
device = (SDL_HIDAPI_Device *)SDL_calloc(1, sizeof(*device));
if (!device) {
return;
}
640
641
642
643
644
device->path = SDL_strdup(info->path);
if (!device->path) {
SDL_free(device);
return;
}
645
646
647
device->seen = SDL_TRUE;
device->vendor_id = info->vendor_id;
device->product_id = info->product_id;
648
device->version = info->release_number;
649
650
651
652
653
654
655
device->interface_number = info->interface_number;
device->usage_page = info->usage_page;
device->usage = info->usage;
{
/* FIXME: Is there any way to tell whether this is a Bluetooth device? */
const Uint16 vendor = device->vendor_id;
const Uint16 product = device->product_id;
656
const Uint16 version = device->version;
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
Uint16 *guid16 = (Uint16 *)device->guid.data;
*guid16++ = SDL_SwapLE16(SDL_HARDWARE_BUS_USB);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16(vendor);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16(product);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16(version);
*guid16++ = 0;
/* Note that this is a HIDAPI device for special handling elsewhere */
device->guid.data[14] = 'h';
device->guid.data[15] = 0;
}
673
/* Need the device name before getting the driver to know whether to ignore this device */
674
675
676
677
678
679
if (!device->name) {
const char *name = SDL_GetCustomJoystickName(device->vendor_id, device->product_id);
if (name) {
device->name = SDL_strdup(name);
}
}
680
if (!device->name && info->manufacturer_string && info->product_string) {
681
const char *manufacturer_remapped;
682
683
684
685
686
687
688
689
690
691
692
char *manufacturer_string = SDL_iconv_string("UTF-8", "WCHAR_T", (char*)info->manufacturer_string, (SDL_wcslen(info->manufacturer_string)+1)*sizeof(wchar_t));
char *product_string = SDL_iconv_string("UTF-8", "WCHAR_T", (char*)info->product_string, (SDL_wcslen(info->product_string)+1)*sizeof(wchar_t));
if (!manufacturer_string && !product_string) {
if (sizeof(wchar_t) == sizeof(Uint16)) {
manufacturer_string = SDL_iconv_string("UTF-8", "UCS-2-INTERNAL", (char*)info->manufacturer_string, (SDL_wcslen(info->manufacturer_string)+1)*sizeof(wchar_t));
product_string = SDL_iconv_string("UTF-8", "UCS-2-INTERNAL", (char*)info->product_string, (SDL_wcslen(info->product_string)+1)*sizeof(wchar_t));
} else if (sizeof(wchar_t) == sizeof(Uint32)) {
manufacturer_string = SDL_iconv_string("UTF-8", "UCS-4-INTERNAL", (char*)info->manufacturer_string, (SDL_wcslen(info->manufacturer_string)+1)*sizeof(wchar_t));
product_string = SDL_iconv_string("UTF-8", "UCS-4-INTERNAL", (char*)info->product_string, (SDL_wcslen(info->product_string)+1)*sizeof(wchar_t));
}
}
693
694
695
696
697
698
manufacturer_remapped = SDL_GetCustomJoystickManufacturer(manufacturer_string);
if (manufacturer_remapped != manufacturer_string) {
SDL_free(manufacturer_string);
manufacturer_string = SDL_strdup(manufacturer_remapped);
}
699
700
701
if (manufacturer_string && product_string) {
size_t name_size = (SDL_strlen(manufacturer_string) + 1 + SDL_strlen(product_string) + 1);
702
703
device->name = (char *)SDL_malloc(name_size);
if (device->name) {
704
705
706
707
708
if (SDL_strncasecmp(manufacturer_string, product_string, SDL_strlen(manufacturer_string)) == 0) {
SDL_strlcpy(device->name, product_string, name_size);
} else {
SDL_snprintf(device->name, name_size, "%s %s", manufacturer_string, product_string);
}
709
710
711
712
713
714
715
716
717
718
719
720
721
}
}
if (manufacturer_string) {
SDL_free(manufacturer_string);
}
if (product_string) {
SDL_free(product_string);
}
}
if (!device->name) {
size_t name_size = (6 + 1 + 6 + 1);
device->name = (char *)SDL_malloc(name_size);
if (!device->name) {
722
SDL_free(device->path);
723
724
725
726
727
728
729
730
731
732
733
734
735
SDL_free(device);
return;
}
SDL_snprintf(device->name, name_size, "0x%.4x/0x%.4x", info->vendor_id, info->product_id);
}
/* Add it to the list */
if (last) {
last->next = device;
} else {
SDL_HIDAPI_devices = device;
}
736
737
HIDAPI_SetupDeviceDriver(device);
738
#ifdef DEBUG_HIDAPI
739
SDL_Log("Added HIDAPI device '%s' VID 0x%.4x, PID 0x%.4x, version %d, interface %d, usage page 0x%.4x, usage 0x%.4x, path = %s, driver = %s\n", device->name, device->vendor_id, device->product_id, device->version, device->interface_number, device->usage_page, device->usage, device->path, device->driver ? device->driver->hint : "NONE");
740
#endif
741
742
743
744
}
static void
745
HIDAPI_DelDevice(SDL_HIDAPI_Device *device)
746
747
748
749
750
751
752
753
754
755
{
SDL_HIDAPI_Device *curr, *last;
for (curr = SDL_HIDAPI_devices, last = NULL; curr; last = curr, curr = curr->next) {
if (curr == device) {
if (last) {
last->next = curr->next;
} else {
SDL_HIDAPI_devices = curr->next;
}
756
HIDAPI_CleanupDeviceDriver(device);
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
SDL_free(device->name);
SDL_free(device->path);
SDL_free(device);
return;
}
}
}
static void
HIDAPI_UpdateDeviceList(void)
{
SDL_HIDAPI_Device *device;
struct hid_device_info *devs, *info;
772
SDL_LockJoysticks();
773
774
775
776
777
778
779
780
781
/* Prepare the existing device list */
device = SDL_HIDAPI_devices;
while (device) {
device->seen = SDL_FALSE;
device = device->next;
}
/* Enumerate the devices */
782
783
784
785
786
787
788
789
790
791
if (SDL_HIDAPI_numdrivers > 0) {
devs = hid_enumerate(0, 0);
if (devs) {
for (info = devs; info; info = info->next) {
device = HIDAPI_GetJoystickByInfo(info->path, info->vendor_id, info->product_id);
if (device) {
device->seen = SDL_TRUE;
} else {
HIDAPI_AddDevice(info);
}
792
}
793
hid_free_enumeration(devs);
794
795
796
797
798
799
800
801
802
}
}
/* Remove any devices that weren't seen */
device = SDL_HIDAPI_devices;
while (device) {
SDL_HIDAPI_Device *next = device->next;
if (!device->seen) {
803
HIDAPI_DelDevice(device);
804
805
806
}
device = next;
}
807
808
SDL_UnlockJoysticks();
809
810
811
}
SDL_bool
812
HIDAPI_IsDevicePresent(Uint16 vendor_id, Uint16 product_id, Uint16 version, const char *name)
813
814
{
SDL_HIDAPI_Device *device;
815
SDL_bool result = SDL_FALSE;
816
817
818
819
820
821
/* Make sure we're initialized, as this could be called from other drivers during startup */
if (HIDAPI_JoystickInit() < 0) {
return SDL_FALSE;
}
822
/* Don't update the device list for devices we know aren't supported */
823
if (!HIDAPI_IsDeviceSupported(vendor_id, product_id, version, name)) {
824
825
826
return SDL_FALSE;
}
827
/* Make sure the device list is completely up to date when we check for device presence */
828
829
830
831
if (SDL_AtomicTryLock(&SDL_HIDAPI_spinlock)) {
HIDAPI_UpdateDeviceList();
SDL_AtomicUnlock(&SDL_HIDAPI_spinlock);
}
832
833
834
835
836
/* Note that this isn't a perfect check - there may be multiple devices with 0 VID/PID,
or a different name than we have it listed here, etc, but if we support the device
and we have something similar in our device list, mark it as present.
*/
837
SDL_LockJoysticks();
838
839
840
device = SDL_HIDAPI_devices;
while (device) {
if (device->vendor_id == vendor_id && device->product_id == product_id && device->driver) {
841
result = SDL_TRUE;
842
843
844
}
device = device->next;
}
845
846
847
SDL_UnlockJoysticks();
return result;
848
849
850
851
852
}
static void
HIDAPI_JoystickDetect(void)
{
853
854
855
856
857
858
859
860
if (SDL_AtomicTryLock(&SDL_HIDAPI_spinlock)) {
HIDAPI_UpdateDiscovery();
if (SDL_HIDAPI_discovery.m_bHaveDevicesChanged) {
/* FIXME: We probably need to schedule an update in a few seconds as well */
HIDAPI_UpdateDeviceList();
SDL_HIDAPI_discovery.m_bHaveDevicesChanged = SDL_FALSE;
}
SDL_AtomicUnlock(&SDL_HIDAPI_spinlock);
861
}
862
863
864
865
866
867
}
void
HIDAPI_UpdateDevices(void)
{
SDL_HIDAPI_Device *device;
868
869
870
871
/* Update the devices, which may change connected joysticks and send events */
/* Prepare the existing device list */
872
873
874
875
876
877
878
if (SDL_AtomicTryLock(&SDL_HIDAPI_spinlock)) {
device = SDL_HIDAPI_devices;
while (device) {
if (device->driver) {
device->driver->UpdateDevice(device);
}
device = device->next;
879
}
880
SDL_AtomicUnlock(&SDL_HIDAPI_spinlock);
881
}
882
883
884
885
886
}
static const char *
HIDAPI_JoystickGetDeviceName(int device_index)
{
887
888
889
890
891
892
893
894
895
896
SDL_HIDAPI_Device *device;
const char *name = NULL;
device = HIDAPI_GetDeviceByIndex(device_index, NULL);
if (device) {
/* FIXME: The device could be freed after this name is returned... */
name = device->name;
}
return name;
897
898
}
899
900
901
static int
HIDAPI_JoystickGetDevicePlayerIndex(int device_index)
{
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
SDL_HIDAPI_Device *device;
SDL_JoystickID instance_id;
int player_index = -1;
device = HIDAPI_GetDeviceByIndex(device_index, &instance_id);
if (device) {
player_index = device->driver->GetDevicePlayerIndex(device, instance_id);
}
return player_index;
}
static void
HIDAPI_JoystickSetDevicePlayerIndex(int device_index, int player_index)
{
SDL_HIDAPI_Device *device;
SDL_JoystickID instance_id;
device = HIDAPI_GetDeviceByIndex(device_index, &instance_id);
if (device) {
device->driver->SetDevicePlayerIndex(device, instance_id, player_index);
}
924
925
}
926
927
928
static SDL_JoystickGUID
HIDAPI_JoystickGetDeviceGUID(int device_index)
{
929
930
931
932
933
934
935
936
937
938
939
SDL_HIDAPI_Device *device;
SDL_JoystickGUID guid;
device = HIDAPI_GetDeviceByIndex(device_index, NULL);
if (device) {
SDL_memcpy(&guid, &device->guid, sizeof(guid));
} else {
SDL_zero(guid);
}
return guid;
940
941
942
943
944
}
static SDL_JoystickID
HIDAPI_JoystickGetDeviceInstanceID(int device_index)
{
945
SDL_JoystickID joystickID = -1;
946
947
HIDAPI_GetDeviceByIndex(device_index, &joystickID);
return joystickID;
948
949
950
951
952
}
static int
HIDAPI_JoystickOpen(SDL_Joystick * joystick, int device_index)
{
953
954
SDL_JoystickID joystickID;
SDL_HIDAPI_Device *device = HIDAPI_GetDeviceByIndex(device_index, &joystickID);
955
struct joystick_hwdata *hwdata;
956
957
958
959
960
hwdata = (struct joystick_hwdata *)SDL_calloc(1, sizeof(*hwdata));
if (!hwdata) {
return SDL_OutOfMemory();
}
961
hwdata->device = device;
962
963
if (!device->driver->OpenJoystick(device, joystick)) {
964
SDL_free(hwdata);
965
966
967
return -1;
}
968
joystick->hwdata = hwdata;
969
970
971
972
973
974
return 0;
}
static int
HIDAPI_JoystickRumble(SDL_Joystick * joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms)
{
975
976
int result;
977
978
979
980
981
982
983
984
985
if (joystick->hwdata) {
SDL_HIDAPI_Device *device = joystick->hwdata->device;
result = device->driver->RumbleJoystick(device, joystick, low_frequency_rumble, high_frequency_rumble, duration_ms);
} else {
SDL_SetError("Rumble failed, device disconnected");
result = -1;
}
986
return result;
987
988
989
990
991
}
static void
HIDAPI_JoystickUpdate(SDL_Joystick * joystick)
{
992
/* This is handled in SDL_HIDAPI_UpdateDevices() */
993
994
995
996
997
}
static void
HIDAPI_JoystickClose(SDL_Joystick * joystick)
{
998
999
if (joystick->hwdata) {
SDL_HIDAPI_Device *device = joystick->hwdata->device;
1000