src/platform/sdl/sdl-events.c (view raw)
1/* Copyright (c) 2013-2014 Jeffrey Pfau
2 *
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6#include "sdl-events.h"
7
8#include <mgba/core/core.h>
9#include <mgba/core/input.h>
10#include <mgba/core/serialize.h>
11#include <mgba/core/thread.h>
12#include <mgba/debugger/debugger.h>
13#include <mgba/internal/gba/input.h>
14#include <mgba-util/configuration.h>
15#include <mgba-util/formatting.h>
16#include <mgba-util/vfs.h>
17
18#if SDL_VERSION_ATLEAST(2, 0, 0) && defined(__APPLE__)
19#define GUI_MOD KMOD_GUI
20#else
21#define GUI_MOD KMOD_CTRL
22#endif
23
24#define GYRO_STEPS 100
25#define RUMBLE_PWM 16
26#define RUMBLE_STEPS 2
27
28mLOG_DEFINE_CATEGORY(SDL_EVENTS, "SDL Events", "platform.sdl.events");
29
30DEFINE_VECTOR(SDL_JoystickList, struct SDL_JoystickCombo);
31
32#if SDL_VERSION_ATLEAST(2, 0, 0)
33static void _mSDLSetRumble(struct mRumble* rumble, int enable);
34#endif
35static int32_t _mSDLReadTiltX(struct mRotationSource* rumble);
36static int32_t _mSDLReadTiltY(struct mRotationSource* rumble);
37static int32_t _mSDLReadGyroZ(struct mRotationSource* rumble);
38static void _mSDLRotationSample(struct mRotationSource* source);
39
40bool mSDLInitEvents(struct mSDLEvents* context) {
41#if SDL_VERSION_ATLEAST(2, 0, 4)
42 SDL_SetHint(SDL_HINT_NO_SIGNAL_HANDLERS, "1");
43#endif
44 if (SDL_InitSubSystem(SDL_INIT_JOYSTICK) < 0) {
45 mLOG(SDL_EVENTS, ERROR, "SDL joystick initialization failed: %s", SDL_GetError());
46 }
47
48#if SDL_VERSION_ATLEAST(2, 0, 0)
49 SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1");
50 if (SDL_InitSubSystem(SDL_INIT_HAPTIC) < 0) {
51 mLOG(SDL_EVENTS, ERROR, "SDL haptic initialization failed: %s", SDL_GetError());
52 }
53 if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0) {
54 mLOG(SDL_EVENTS, ERROR, "SDL video initialization failed: %s", SDL_GetError());
55 }
56#endif
57
58 SDL_JoystickEventState(SDL_ENABLE);
59 int nJoysticks = SDL_NumJoysticks();
60 SDL_JoystickListInit(&context->joysticks, nJoysticks);
61 if (nJoysticks > 0) {
62 mSDLUpdateJoysticks(context, NULL);
63 // Some OSes don't do hotplug detection
64 if (!SDL_JoystickListSize(&context->joysticks)) {
65 int i;
66 for (i = 0; i < nJoysticks; ++i) {
67 SDL_Joystick* sdlJoystick = SDL_JoystickOpen(i);
68 if (!sdlJoystick) {
69 continue;
70 }
71 struct SDL_JoystickCombo* joystick = SDL_JoystickListAppend(&context->joysticks);
72 joystick->joystick = sdlJoystick;
73 joystick->index = SDL_JoystickListSize(&context->joysticks) - 1;
74#if SDL_VERSION_ATLEAST(2, 0, 0)
75 joystick->id = SDL_JoystickInstanceID(joystick->joystick);
76 joystick->haptic = SDL_HapticOpenFromJoystick(joystick->joystick);
77#else
78 joystick->id = SDL_JoystickIndex(joystick->joystick);
79#endif
80 }
81 }
82 }
83
84 context->playersAttached = 0;
85
86 size_t i;
87 for (i = 0; i < MAX_PLAYERS; ++i) {
88 context->preferredJoysticks[i] = 0;
89 }
90
91#if !SDL_VERSION_ATLEAST(2, 0, 0)
92 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
93#else
94 context->screensaverSuspendDepth = 0;
95#endif
96 return true;
97}
98
99void mSDLDeinitEvents(struct mSDLEvents* context) {
100 size_t i;
101 for (i = 0; i < SDL_JoystickListSize(&context->joysticks); ++i) {
102 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&context->joysticks, i);
103#if SDL_VERSION_ATLEAST(2, 0, 0)
104 SDL_HapticClose(joystick->haptic);
105#endif
106 SDL_JoystickClose(joystick->joystick);
107 }
108 SDL_JoystickListDeinit(&context->joysticks);
109 SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
110}
111
112void mSDLEventsLoadConfig(struct mSDLEvents* context, const struct Configuration* config) {
113 context->preferredJoysticks[0] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 0);
114 context->preferredJoysticks[1] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 1);
115 context->preferredJoysticks[2] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 2);
116 context->preferredJoysticks[3] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 3);
117}
118
119void mSDLInitBindingsGBA(struct mInputMap* inputMap) {
120#ifdef BUILD_PANDORA
121 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_PAGEDOWN, GBA_KEY_A);
122 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_END, GBA_KEY_B);
123 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RSHIFT, GBA_KEY_L);
124 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RCTRL, GBA_KEY_R);
125 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LALT, GBA_KEY_START);
126 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LCTRL, GBA_KEY_SELECT);
127 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_UP, GBA_KEY_UP);
128 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_DOWN, GBA_KEY_DOWN);
129 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LEFT, GBA_KEY_LEFT);
130 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RIGHT, GBA_KEY_RIGHT);
131#else
132 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_x, GBA_KEY_A);
133 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_z, GBA_KEY_B);
134 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_a, GBA_KEY_L);
135 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_s, GBA_KEY_R);
136 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RETURN, GBA_KEY_START);
137 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_BACKSPACE, GBA_KEY_SELECT);
138 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_UP, GBA_KEY_UP);
139 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_DOWN, GBA_KEY_DOWN);
140 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LEFT, GBA_KEY_LEFT);
141 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RIGHT, GBA_KEY_RIGHT);
142#endif
143
144 struct mInputAxis description = { GBA_KEY_RIGHT, GBA_KEY_LEFT, 0x4000, -0x4000 };
145 mInputBindAxis(inputMap, SDL_BINDING_BUTTON, 0, &description);
146 description = (struct mInputAxis) { GBA_KEY_DOWN, GBA_KEY_UP, 0x4000, -0x4000 };
147 mInputBindAxis(inputMap, SDL_BINDING_BUTTON, 1, &description);
148
149 mInputBindHat(inputMap, SDL_BINDING_BUTTON, 0, &GBAInputInfo.hat);
150}
151
152bool mSDLAttachPlayer(struct mSDLEvents* events, struct mSDLPlayer* player) {
153 player->joystick = 0;
154
155 if (events->playersAttached >= MAX_PLAYERS) {
156 return false;
157 }
158
159#if SDL_VERSION_ATLEAST(2, 0, 0)
160 player->rumble.d.setRumble = _mSDLSetRumble;
161 CircleBufferInit(&player->rumble.history, RUMBLE_PWM);
162 player->rumble.level = 0;
163 player->rumble.activeLevel = 0;
164 player->rumble.p = player;
165#endif
166
167 player->rotation.d.readTiltX = _mSDLReadTiltX;
168 player->rotation.d.readTiltY = _mSDLReadTiltY;
169 player->rotation.d.readGyroZ = _mSDLReadGyroZ;
170 player->rotation.d.sample = _mSDLRotationSample;
171 player->rotation.axisX = 2;
172 player->rotation.axisY = 3;
173 player->rotation.gyroSensitivity = 2.2e9f;
174 player->rotation.gyroX = 0;
175 player->rotation.gyroY = 1;
176 player->rotation.zDelta = 0;
177 CircleBufferInit(&player->rotation.zHistory, sizeof(float) * GYRO_STEPS);
178 player->rotation.p = player;
179
180 player->playerId = events->playersAttached;
181 events->players[player->playerId] = player;
182 size_t firstUnclaimed = SIZE_MAX;
183 size_t index = SIZE_MAX;
184
185 size_t i;
186 for (i = 0; i < SDL_JoystickListSize(&events->joysticks); ++i) {
187 bool claimed = false;
188
189 int p;
190 for (p = 0; p < events->playersAttached; ++p) {
191 if (events->players[p]->joystick == SDL_JoystickListGetPointer(&events->joysticks, i)) {
192 claimed = true;
193 break;
194 }
195 }
196
197 if (!claimed && firstUnclaimed == SIZE_MAX) {
198 firstUnclaimed = i;
199 }
200
201#if SDL_VERSION_ATLEAST(2, 0, 0)
202 char joystickName[34] = {0};
203 SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick), joystickName, sizeof(joystickName));
204#else
205 const char* joystickName = SDL_JoystickName(SDL_JoystickIndex(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick));
206 if (!joystickName) {
207 continue;
208 }
209#endif
210 if (events->preferredJoysticks[player->playerId] && strcmp(events->preferredJoysticks[player->playerId], joystickName) == 0) {
211 index = i;
212 break;
213 }
214 }
215
216 if (index == SIZE_MAX && firstUnclaimed != SIZE_MAX) {
217 index = firstUnclaimed;
218 }
219
220 if (index != SIZE_MAX) {
221 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
222
223#if SDL_VERSION_ATLEAST(2, 0, 0)
224 if (player->joystick->haptic) {
225 SDL_HapticRumbleInit(player->joystick->haptic);
226 }
227#endif
228 }
229
230 ++events->playersAttached;
231 return true;
232}
233
234void mSDLDetachPlayer(struct mSDLEvents* events, struct mSDLPlayer* player) {
235 if (player != events->players[player->playerId]) {
236 return;
237 }
238 int i;
239 for (i = player->playerId; i < events->playersAttached; ++i) {
240 if (i + 1 < MAX_PLAYERS) {
241 events->players[i] = events->players[i + 1];
242 }
243 if (i < events->playersAttached - 1) {
244 events->players[i]->playerId = i;
245 }
246 }
247 --events->playersAttached;
248 CircleBufferDeinit(&player->rotation.zHistory);
249}
250
251void mSDLPlayerLoadConfig(struct mSDLPlayer* context, const struct Configuration* config) {
252 mInputMapLoad(context->bindings, SDL_BINDING_KEY, config);
253 if (context->joystick) {
254 mInputMapLoad(context->bindings, SDL_BINDING_BUTTON, config);
255#if SDL_VERSION_ATLEAST(2, 0, 0)
256 char name[34] = {0};
257 SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(context->joystick->joystick), name, sizeof(name));
258#else
259 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
260 if (!name) {
261 return;
262 }
263#endif
264 mInputProfileLoad(context->bindings, SDL_BINDING_BUTTON, config, name);
265
266 const char* value;
267 char* end;
268 int numAxes = SDL_JoystickNumAxes(context->joystick->joystick);
269 int axis;
270 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisX", name);
271 if (value) {
272 axis = strtol(value, &end, 0);
273 if (axis >= 0 && axis < numAxes && end && !*end) {
274 context->rotation.axisX = axis;
275 }
276 }
277 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisY", name);
278 if (value) {
279 axis = strtol(value, &end, 0);
280 if (axis >= 0 && axis < numAxes && end && !*end) {
281 context->rotation.axisY = axis;
282 }
283 }
284 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisX", name);
285 if (value) {
286 axis = strtol(value, &end, 0);
287 if (axis >= 0 && axis < numAxes && end && !*end) {
288 context->rotation.gyroX = axis;
289 }
290 }
291 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisY", name);
292 if (value) {
293 axis = strtol(value, &end, 0);
294 if (axis >= 0 && axis < numAxes && end && !*end) {
295 context->rotation.gyroY = axis;
296 }
297 }
298 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroSensitivity", name);
299 if (value) {
300 float sensitivity = strtof_u(value, &end);
301 if (end && !*end) {
302 context->rotation.gyroSensitivity = sensitivity;
303 }
304 }
305 }
306}
307
308void mSDLPlayerSaveConfig(const struct mSDLPlayer* context, struct Configuration* config) {
309 if (context->joystick) {
310#if SDL_VERSION_ATLEAST(2, 0, 0)
311 char name[34] = {0};
312 SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(context->joystick->joystick), name, sizeof(name));
313#else
314 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
315 if (!name) {
316 return;
317 }
318#endif
319 char value[16];
320 snprintf(value, sizeof(value), "%i", context->rotation.axisX);
321 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisX", value, name);
322 snprintf(value, sizeof(value), "%i", context->rotation.axisY);
323 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisY", value, name);
324 snprintf(value, sizeof(value), "%i", context->rotation.gyroX);
325 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisX", value, name);
326 snprintf(value, sizeof(value), "%i", context->rotation.gyroY);
327 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisY", value, name);
328 snprintf(value, sizeof(value), "%g", context->rotation.gyroSensitivity);
329 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroSensitivity", value, name);
330 }
331}
332
333void mSDLPlayerChangeJoystick(struct mSDLEvents* events, struct mSDLPlayer* player, size_t index) {
334 if (player->playerId >= MAX_PLAYERS || index >= SDL_JoystickListSize(&events->joysticks)) {
335 return;
336 }
337 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
338}
339
340void mSDLUpdateJoysticks(struct mSDLEvents* events, const struct Configuration* config) {
341 // Pump SDL joystick events without eating the rest of the events
342 SDL_JoystickUpdate();
343#if SDL_VERSION_ATLEAST(2, 0, 0)
344 SDL_Event event;
345 while (SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_JOYDEVICEADDED, SDL_JOYDEVICEREMOVED) > 0) {
346 if (event.type == SDL_JOYDEVICEADDED) {
347 SDL_Joystick* sdlJoystick = SDL_JoystickOpen(event.jdevice.which);
348 if (!sdlJoystick) {
349 continue;
350 }
351 ssize_t joysticks[MAX_PLAYERS];
352 size_t i;
353 // Pointers can get invalidated, so we'll need to refresh them
354 for (i = 0; i < events->playersAttached && i < MAX_PLAYERS; ++i) {
355 joysticks[i] = events->players[i]->joystick ? SDL_JoystickListIndex(&events->joysticks, events->players[i]->joystick) : SIZE_MAX;
356 events->players[i]->joystick = NULL;
357 }
358 struct SDL_JoystickCombo* joystick = SDL_JoystickListAppend(&events->joysticks);
359 joystick->joystick = sdlJoystick;
360 joystick->id = SDL_JoystickInstanceID(joystick->joystick);
361 joystick->index = SDL_JoystickListSize(&events->joysticks) - 1;
362#if SDL_VERSION_ATLEAST(2, 0, 0)
363 joystick->haptic = SDL_HapticOpenFromJoystick(joystick->joystick);
364#endif
365 for (i = 0; i < events->playersAttached && i < MAX_PLAYERS; ++i) {
366 if (joysticks[i] != SIZE_MAX) {
367 events->players[i]->joystick = SDL_JoystickListGetPointer(&events->joysticks, joysticks[i]);
368 }
369 }
370
371#if SDL_VERSION_ATLEAST(2, 0, 0)
372 char joystickName[34] = {0};
373 SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(joystick->joystick), joystickName, sizeof(joystickName));
374#else
375 const char* joystickName = SDL_JoystickName(SDL_JoystickIndex(joystick->joystick));
376 if (joystickName)
377#endif
378 {
379 for (i = 0; (int) i < events->playersAttached; ++i) {
380 if (events->players[i]->joystick) {
381 continue;
382 }
383 if (events->preferredJoysticks[i] && strcmp(events->preferredJoysticks[i], joystickName) == 0) {
384 events->players[i]->joystick = joystick;
385 if (config && events->players[i]->bindings) {
386 mInputProfileLoad(events->players[i]->bindings, SDL_BINDING_BUTTON, config, joystickName);
387 }
388 return;
389 }
390 }
391 }
392 for (i = 0; (int) i < events->playersAttached; ++i) {
393 if (events->players[i]->joystick) {
394 continue;
395 }
396 events->players[i]->joystick = joystick;
397 if (config && events->players[i]->bindings && joystickName) {
398 mInputProfileLoad(events->players[i]->bindings, SDL_BINDING_BUTTON, config, joystickName);
399 }
400 break;
401 }
402 } else if (event.type == SDL_JOYDEVICEREMOVED) {
403 SDL_JoystickID ids[MAX_PLAYERS] = { 0 };
404 size_t i;
405 for (i = 0; (int) i < events->playersAttached; ++i) {
406 if (events->players[i]->joystick) {
407 ids[i] = events->players[i]->joystick->id;
408 events->players[i]->joystick = 0;
409 } else {
410 ids[i] = -1;
411 }
412 }
413 for (i = 0; i < SDL_JoystickListSize(&events->joysticks);) {
414 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
415 if (joystick->id == event.jdevice.which) {
416 SDL_JoystickListShift(&events->joysticks, i, 1);
417 continue;
418 }
419 SDL_JoystickListGetPointer(&events->joysticks, i)->index = i;
420 int p;
421 for (p = 0; p < events->playersAttached; ++p) {
422 if (joystick->id == ids[p]) {
423 events->players[p]->joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
424 }
425 }
426 ++i;
427 }
428 }
429 }
430#endif
431}
432
433static void _pauseAfterFrame(struct mCoreThread* context) {
434 context->frameCallback = 0;
435 mCoreThreadPauseFromThread(context);
436}
437
438static void _mSDLHandleKeypress(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const struct SDL_KeyboardEvent* event) {
439 int key = -1;
440 if (!(event->keysym.mod & ~(KMOD_NUM | KMOD_CAPS))) {
441 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.sym);
442 }
443 if (key != -1) {
444 mCoreThreadInterrupt(context);
445 if (event->type == SDL_KEYDOWN) {
446 context->core->addKeys(context->core, 1 << key);
447 } else {
448 context->core->clearKeys(context->core, 1 << key);
449 }
450 mCoreThreadContinue(context);
451 return;
452 }
453 if (event->keysym.sym == SDLK_TAB) {
454 context->impl->sync.audioWait = event->type != SDL_KEYDOWN;
455 return;
456 }
457 if (event->keysym.sym == SDLK_BACKQUOTE) {
458 mCoreThreadSetRewinding(context, event->type == SDL_KEYDOWN);
459 }
460 if (event->type == SDL_KEYDOWN) {
461 switch (event->keysym.sym) {
462#ifdef USE_DEBUGGERS
463 case SDLK_F11:
464 if (context->core->debugger) {
465 mDebuggerEnter(context->core->debugger, DEBUGGER_ENTER_MANUAL, NULL);
466 }
467 return;
468#endif
469#ifdef USE_PNG
470 case SDLK_F12:
471 mCoreTakeScreenshot(context->core);
472 return;
473#endif
474 case SDLK_BACKSLASH:
475 mCoreThreadPause(context);
476 context->frameCallback = _pauseAfterFrame;
477 mCoreThreadUnpause(context);
478 return;
479#ifdef BUILD_PANDORA
480 case SDLK_ESCAPE:
481 mCoreThreadEnd(context);
482 return;
483#endif
484 default:
485 if ((event->keysym.mod & GUI_MOD) && (event->keysym.mod & GUI_MOD) == event->keysym.mod) {
486 switch (event->keysym.sym) {
487#if SDL_VERSION_ATLEAST(2, 0, 0)
488 case SDLK_f:
489 SDL_SetWindowFullscreen(sdlContext->window, sdlContext->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
490 sdlContext->fullscreen = !sdlContext->fullscreen;
491 sdlContext->windowUpdated = 1;
492 break;
493#endif
494 case SDLK_p:
495 mCoreThreadTogglePause(context);
496 break;
497 case SDLK_n:
498 mCoreThreadPause(context);
499 context->frameCallback = _pauseAfterFrame;
500 mCoreThreadUnpause(context);
501 break;
502 case SDLK_r:
503 mCoreThreadReset(context);
504 break;
505 default:
506 break;
507 }
508 }
509 if (event->keysym.mod & KMOD_SHIFT) {
510 switch (event->keysym.sym) {
511 case SDLK_F1:
512 case SDLK_F2:
513 case SDLK_F3:
514 case SDLK_F4:
515 case SDLK_F5:
516 case SDLK_F6:
517 case SDLK_F7:
518 case SDLK_F8:
519 case SDLK_F9:
520 mCoreThreadInterrupt(context);
521 mCoreSaveState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SAVEDATA | SAVESTATE_SCREENSHOT | SAVESTATE_RTC);
522 mCoreThreadContinue(context);
523 break;
524 default:
525 break;
526 }
527 } else {
528 switch (event->keysym.sym) {
529 case SDLK_F1:
530 case SDLK_F2:
531 case SDLK_F3:
532 case SDLK_F4:
533 case SDLK_F5:
534 case SDLK_F6:
535 case SDLK_F7:
536 case SDLK_F8:
537 case SDLK_F9:
538 mCoreThreadInterrupt(context);
539 mCoreLoadState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SCREENSHOT | SAVESTATE_RTC);
540 mCoreThreadContinue(context);
541 break;
542 default:
543 break;
544 }
545 }
546 return;
547 }
548 }
549}
550
551static void _mSDLHandleMouseButton(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_MouseButtonEvent* event) {
552 if (event->button != SDL_BUTTON_LEFT) {
553 return;
554 }
555 int x = event->x;
556 int y = event->y;
557#if SDL_VERSION_ATLEAST(2, 0, 0)
558 int windowW;
559 int windowH;
560 SDL_GetWindowSize(sdlContext->window, &windowW, &windowH);
561 unsigned coreW;
562 unsigned coreH;
563 core->desiredVideoDimensions(core, &coreW, &coreH);
564 x = x * coreW / windowW;
565 y = y * coreH / windowH;
566#endif
567 core->setCursorLocation(core, x, y);
568 core->setCursorDown(core, event->state == SDL_PRESSED);
569}
570
571static void _mSDLHandleMouseMotion(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_MouseMotionEvent* event) {
572 int x = event->x;
573 int y = event->y;
574#if SDL_VERSION_ATLEAST(2, 0, 0)
575 int windowW;
576 int windowH;
577 SDL_GetWindowSize(sdlContext->window, &windowW, &windowH);
578 unsigned coreW;
579 unsigned coreH;
580 core->desiredVideoDimensions(core, &coreW, &coreH);
581 x = x * coreW / windowW;
582 y = y * coreH / windowH;
583#endif
584 core->setCursorLocation(core, x, y);
585}
586
587static void _mSDLHandleJoyButton(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const struct SDL_JoyButtonEvent* event) {
588 int key = 0;
589 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_BUTTON, event->button);
590 if (key == -1) {
591 return;
592 }
593
594 mCoreThreadInterrupt(context);
595 if (event->type == SDL_JOYBUTTONDOWN) {
596 context->core->addKeys(context->core, 1 << key);
597 } else {
598 context->core->clearKeys(context->core, 1 << key);
599 }
600 mCoreThreadContinue(context);
601}
602
603static void _mSDLHandleJoyHat(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const struct SDL_JoyHatEvent* event) {
604 int allKeys = mInputMapHat(sdlContext->bindings, SDL_BINDING_BUTTON, event->hat, -1);
605 if (allKeys == 0) {
606 return;
607 }
608
609 int keys = mInputMapHat(sdlContext->bindings, SDL_BINDING_BUTTON, event->hat, event->value);
610
611 mCoreThreadInterrupt(context);
612 context->core->clearKeys(context->core, allKeys ^ keys);
613 context->core->addKeys(context->core, keys);
614 mCoreThreadContinue(context);
615}
616
617static void _mSDLHandleJoyAxis(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const struct SDL_JoyAxisEvent* event) {
618 int clearKeys = ~mInputClearAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, -1);
619 int newKeys = 0;
620 int key = mInputMapAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, event->value);
621 if (key != -1) {
622 newKeys |= 1 << key;
623 }
624 clearKeys &= ~newKeys;
625 mCoreThreadInterrupt(context);
626 context->core->clearKeys(context->core, clearKeys);
627 context->core->addKeys(context->core, newKeys);
628 mCoreThreadContinue(context);
629
630}
631
632#if SDL_VERSION_ATLEAST(2, 0, 0)
633static void _mSDLHandleWindowEvent(struct mSDLPlayer* sdlContext, const struct SDL_WindowEvent* event) {
634 switch (event->event) {
635 case SDL_WINDOWEVENT_SIZE_CHANGED:
636 sdlContext->windowUpdated = 1;
637 break;
638 }
639}
640#endif
641
642void mSDLHandleEvent(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const union SDL_Event* event) {
643 switch (event->type) {
644 case SDL_QUIT:
645 mCoreThreadEnd(context);
646 break;
647#if SDL_VERSION_ATLEAST(2, 0, 0)
648 case SDL_WINDOWEVENT:
649 _mSDLHandleWindowEvent(sdlContext, &event->window);
650 break;
651#else
652 case SDL_VIDEORESIZE:
653 sdlContext->newWidth = event->resize.w;
654 sdlContext->newHeight = event->resize.h;
655 sdlContext->windowUpdated = 1;
656 break;
657#endif
658 case SDL_KEYDOWN:
659 case SDL_KEYUP:
660 _mSDLHandleKeypress(context, sdlContext, &event->key);
661 break;
662 case SDL_MOUSEBUTTONDOWN:
663 case SDL_MOUSEBUTTONUP:
664 _mSDLHandleMouseButton(context->core, sdlContext, &event->button);
665 break;
666 case SDL_MOUSEMOTION:
667 _mSDLHandleMouseMotion(context->core, sdlContext, &event->motion);
668 break;
669 case SDL_JOYBUTTONDOWN:
670 case SDL_JOYBUTTONUP:
671 _mSDLHandleJoyButton(context, sdlContext, &event->jbutton);
672 break;
673 case SDL_JOYHATMOTION:
674 _mSDLHandleJoyHat(context, sdlContext, &event->jhat);
675 break;
676 case SDL_JOYAXISMOTION:
677 _mSDLHandleJoyAxis(context, sdlContext, &event->jaxis);
678 break;
679 }
680}
681
682#if SDL_VERSION_ATLEAST(2, 0, 0)
683static void _mSDLSetRumble(struct mRumble* rumble, int enable) {
684 struct mSDLRumble* sdlRumble = (struct mSDLRumble*) rumble;
685 if (!sdlRumble->p->joystick || !sdlRumble->p->joystick->haptic || !SDL_HapticRumbleSupported(sdlRumble->p->joystick->haptic)) {
686 return;
687 }
688 int8_t originalLevel = sdlRumble->level;
689 sdlRumble->level += enable;
690 if (CircleBufferSize(&sdlRumble->history) == RUMBLE_PWM) {
691 int8_t oldLevel;
692 CircleBufferRead8(&sdlRumble->history, &oldLevel);
693 sdlRumble->level -= oldLevel;
694 }
695 CircleBufferWrite8(&sdlRumble->history, enable);
696 if (sdlRumble->level == originalLevel) {
697 return;
698 }
699 float activeLevel = ceil(RUMBLE_STEPS * sdlRumble->level / (float) RUMBLE_PWM) / RUMBLE_STEPS;
700 if (fabsf(sdlRumble->activeLevel - activeLevel) < 0.75 / RUMBLE_STEPS) {
701 return;
702 }
703 sdlRumble->activeLevel = activeLevel;
704 if (sdlRumble->activeLevel > 0.5 / RUMBLE_STEPS) {
705 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
706 SDL_HapticRumblePlay(sdlRumble->p->joystick->haptic, activeLevel, 500);
707 } else {
708 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
709 }
710}
711#endif
712
713static int32_t _readTilt(struct mSDLPlayer* player, int axis) {
714 if (!player->joystick) {
715 return 0;
716 }
717 return SDL_JoystickGetAxis(player->joystick->joystick, axis) * 0x3800;
718}
719
720static int32_t _mSDLReadTiltX(struct mRotationSource* source) {
721 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
722 return _readTilt(rotation->p, rotation->axisX);
723}
724
725static int32_t _mSDLReadTiltY(struct mRotationSource* source) {
726 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
727 return _readTilt(rotation->p, rotation->axisY);
728}
729
730static int32_t _mSDLReadGyroZ(struct mRotationSource* source) {
731 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
732 float z = rotation->zDelta;
733 return z * rotation->gyroSensitivity;
734}
735
736static void _mSDLRotationSample(struct mRotationSource* source) {
737 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
738 SDL_JoystickUpdate();
739 if (!rotation->p->joystick) {
740 return;
741 }
742
743 int x = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroX);
744 int y = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroY);
745 union {
746 float f;
747 int32_t i;
748 } theta = { .f = atan2f(y, x) - atan2f(rotation->oldY, rotation->oldX) };
749 if (isnan(theta.f)) {
750 theta.f = 0.0f;
751 } else if (theta.f > M_PI) {
752 theta.f -= 2.0f * M_PI;
753 } else if (theta.f < -M_PI) {
754 theta.f += 2.0f * M_PI;
755 }
756 rotation->oldX = x;
757 rotation->oldY = y;
758
759 float oldZ = 0;
760 if (CircleBufferSize(&rotation->zHistory) == GYRO_STEPS * sizeof(float)) {
761 CircleBufferRead32(&rotation->zHistory, (int32_t*) &oldZ);
762 }
763 CircleBufferWrite32(&rotation->zHistory, theta.i);
764 rotation->zDelta += theta.f - oldZ;
765}
766
767#if SDL_VERSION_ATLEAST(2, 0, 0)
768void mSDLSuspendScreensaver(struct mSDLEvents* events) {
769 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
770 SDL_DisableScreenSaver();
771 }
772 ++events->screensaverSuspendDepth;
773}
774
775void mSDLResumeScreensaver(struct mSDLEvents* events) {
776 --events->screensaverSuspendDepth;
777 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
778 SDL_EnableScreenSaver();
779 }
780}
781
782void mSDLSetScreensaverSuspendable(struct mSDLEvents* events, bool suspendable) {
783 bool wasSuspendable = events->screensaverSuspendable;
784 events->screensaverSuspendable = suspendable;
785 if (events->screensaverSuspendDepth > 0) {
786 if (suspendable && !wasSuspendable) {
787 SDL_DisableScreenSaver();
788 } else if (!suspendable && wasSuspendable) {
789 SDL_EnableScreenSaver();
790 }
791 } else {
792 SDL_EnableScreenSaver();
793 }
794}
795#endif