d1dc092f |
1 | /* |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2012 |
3 | * |
4 | * This work is licensed under the terms of any of these licenses |
5 | * (at your option): |
6 | * - GNU GPL, version 2 or later. |
7 | * - GNU LGPL, version 2.1 or later. |
8 | * See the COPYING file in the top-level directory. |
9 | */ |
10 | |
11 | #include <stdio.h> |
12 | #include <SDL.h> |
13 | #include "input.h" |
14 | #include "in_sdl.h" |
15 | |
16 | #define IN_SDL_PREFIX "sdl:" |
17 | /* should be machine word for best performace */ |
18 | typedef unsigned long keybits_t; |
19 | #define KEYBITS_WORD_BITS (sizeof(keybits_t) * 8) |
20 | |
6407ad5b |
21 | struct in_sdl_state { |
22 | SDL_Joystick *joy; |
23 | int joy_id; |
24 | int axis_keydown[2]; |
25 | keybits_t keystate[SDLK_LAST / KEYBITS_WORD_BITS + 1]; |
26 | }; |
27 | |
d1dc092f |
28 | static const char * const in_sdl_keys[SDLK_LAST] = { |
29 | [SDLK_BACKSPACE] = "backspace", |
30 | [SDLK_TAB] = "tab", |
31 | [SDLK_CLEAR] = "clear", |
32 | [SDLK_RETURN] = "return", |
33 | [SDLK_PAUSE] = "pause", |
34 | [SDLK_ESCAPE] = "escape", |
35 | [SDLK_SPACE] = "space", |
36 | [SDLK_EXCLAIM] = "!", |
37 | [SDLK_QUOTEDBL] = "\"", |
38 | [SDLK_HASH] = "#", |
39 | [SDLK_DOLLAR] = "$", |
40 | [SDLK_AMPERSAND] = "&", |
41 | [SDLK_QUOTE] = "'", |
42 | [SDLK_LEFTPAREN] = "(", |
43 | [SDLK_RIGHTPAREN] = ")", |
44 | [SDLK_ASTERISK] = "*", |
45 | [SDLK_PLUS] = "+", |
46 | [SDLK_COMMA] = ",", |
47 | [SDLK_MINUS] = "-", |
48 | [SDLK_PERIOD] = ".", |
49 | [SDLK_SLASH] = "/", |
50 | [SDLK_0] = "0", |
51 | [SDLK_1] = "1", |
52 | [SDLK_2] = "2", |
53 | [SDLK_3] = "3", |
54 | [SDLK_4] = "4", |
55 | [SDLK_5] = "5", |
56 | [SDLK_6] = "6", |
57 | [SDLK_7] = "7", |
58 | [SDLK_8] = "8", |
59 | [SDLK_9] = "9", |
60 | [SDLK_COLON] = ":", |
61 | [SDLK_SEMICOLON] = ",", |
62 | [SDLK_LESS] = "<", |
63 | [SDLK_EQUALS] = "=", |
64 | [SDLK_GREATER] = ">", |
65 | [SDLK_QUESTION] = "?", |
66 | [SDLK_AT] = "@", |
67 | [SDLK_LEFTBRACKET] = "[", |
68 | [SDLK_BACKSLASH] = "\\", |
69 | [SDLK_RIGHTBRACKET] = "]", |
70 | [SDLK_CARET] = "^", |
71 | [SDLK_UNDERSCORE] = "_", |
72 | [SDLK_BACKQUOTE] = "`", |
73 | [SDLK_a] = "a", |
74 | [SDLK_b] = "b", |
75 | [SDLK_c] = "c", |
76 | [SDLK_d] = "d", |
77 | [SDLK_e] = "e", |
78 | [SDLK_f] = "f", |
79 | [SDLK_g] = "g", |
80 | [SDLK_h] = "h", |
81 | [SDLK_i] = "i", |
82 | [SDLK_j] = "j", |
83 | [SDLK_k] = "k", |
84 | [SDLK_l] = "l", |
85 | [SDLK_m] = "m", |
86 | [SDLK_n] = "n", |
87 | [SDLK_o] = "o", |
88 | [SDLK_p] = "p", |
89 | [SDLK_q] = "q", |
90 | [SDLK_r] = "r", |
91 | [SDLK_s] = "s", |
92 | [SDLK_t] = "t", |
93 | [SDLK_u] = "u", |
94 | [SDLK_v] = "v", |
95 | [SDLK_w] = "w", |
96 | [SDLK_x] = "x", |
97 | [SDLK_y] = "y", |
98 | [SDLK_z] = "z", |
99 | [SDLK_DELETE] = "delete", |
100 | |
101 | [SDLK_KP0] = "[0]", |
102 | [SDLK_KP1] = "[1]", |
103 | [SDLK_KP2] = "[2]", |
104 | [SDLK_KP3] = "[3]", |
105 | [SDLK_KP4] = "[4]", |
106 | [SDLK_KP5] = "[5]", |
107 | [SDLK_KP6] = "[6]", |
108 | [SDLK_KP7] = "[7]", |
109 | [SDLK_KP8] = "[8]", |
110 | [SDLK_KP9] = "[9]", |
111 | [SDLK_KP_PERIOD] = "[.]", |
112 | [SDLK_KP_DIVIDE] = "[/]", |
113 | [SDLK_KP_MULTIPLY] = "[*]", |
114 | [SDLK_KP_MINUS] = "[-]", |
115 | [SDLK_KP_PLUS] = "[+]", |
116 | [SDLK_KP_ENTER] = "enter", |
117 | [SDLK_KP_EQUALS] = "equals", |
118 | |
119 | [SDLK_UP] = "up", |
120 | [SDLK_DOWN] = "down", |
121 | [SDLK_RIGHT] = "right", |
122 | [SDLK_LEFT] = "left", |
123 | [SDLK_DOWN] = "down", |
124 | [SDLK_INSERT] = "insert", |
125 | [SDLK_HOME] = "home", |
126 | [SDLK_END] = "end", |
127 | [SDLK_PAGEUP] = "page up", |
128 | [SDLK_PAGEDOWN] = "page down", |
129 | |
130 | [SDLK_F1] = "f1", |
131 | [SDLK_F2] = "f2", |
132 | [SDLK_F3] = "f3", |
133 | [SDLK_F4] = "f4", |
134 | [SDLK_F5] = "f5", |
135 | [SDLK_F6] = "f6", |
136 | [SDLK_F7] = "f7", |
137 | [SDLK_F8] = "f8", |
138 | [SDLK_F9] = "f9", |
139 | [SDLK_F10] = "f10", |
140 | [SDLK_F11] = "f11", |
141 | [SDLK_F12] = "f12", |
142 | [SDLK_F13] = "f13", |
143 | [SDLK_F14] = "f14", |
144 | [SDLK_F15] = "f15", |
145 | |
146 | [SDLK_NUMLOCK] = "numlock", |
147 | [SDLK_CAPSLOCK] = "caps lock", |
148 | [SDLK_SCROLLOCK] = "scroll lock", |
149 | [SDLK_RSHIFT] = "right shift", |
150 | [SDLK_LSHIFT] = "left shift", |
151 | [SDLK_RCTRL] = "right ctrl", |
152 | [SDLK_LCTRL] = "left ctrl", |
153 | [SDLK_RALT] = "right alt", |
154 | [SDLK_LALT] = "left alt", |
155 | [SDLK_RMETA] = "right meta", |
156 | [SDLK_LMETA] = "left meta", |
157 | [SDLK_LSUPER] = "left super", /* "Windows" keys */ |
158 | [SDLK_RSUPER] = "right super", |
159 | [SDLK_MODE] = "alt gr", |
160 | [SDLK_COMPOSE] = "compose", |
161 | }; |
162 | |
163 | static void in_sdl_probe(void) |
164 | { |
6407ad5b |
165 | struct in_sdl_state *state; |
166 | SDL_Joystick *joy; |
167 | int i, joycount; |
168 | char name[256]; |
d1dc092f |
169 | |
6407ad5b |
170 | state = calloc(1, sizeof(*state)); |
171 | if (state == NULL) { |
d1dc092f |
172 | fprintf(stderr, "in_sdl: OOM\n"); |
173 | return; |
174 | } |
175 | |
6407ad5b |
176 | in_register(IN_SDL_PREFIX "keys", -1, state, SDLK_LAST, |
d1dc092f |
177 | in_sdl_keys, 0); |
6407ad5b |
178 | |
179 | /* joysticks go here too */ |
180 | SDL_InitSubSystem(SDL_INIT_JOYSTICK); |
181 | |
182 | joycount = SDL_NumJoysticks(); |
183 | for (i = 0; i < joycount; i++) { |
184 | joy = SDL_JoystickOpen(i); |
185 | if (joy == NULL) |
186 | continue; |
187 | |
188 | state = calloc(1, sizeof(*state)); |
189 | if (state == NULL) { |
190 | fprintf(stderr, "in_sdl: OOM\n"); |
191 | break; |
192 | } |
193 | state->joy = joy; |
194 | state->joy_id = i; |
195 | |
196 | snprintf(name, sizeof(name), IN_SDL_PREFIX "%s", SDL_JoystickName(i)); |
197 | in_register(name, -1, state, SDLK_LAST, in_sdl_keys, 0); |
198 | } |
199 | |
200 | if (joycount > 0) |
201 | SDL_JoystickEventState(SDL_ENABLE); |
d1dc092f |
202 | } |
203 | |
204 | static void in_sdl_free(void *drv_data) |
205 | { |
6407ad5b |
206 | struct in_sdl_state *state = drv_data; |
d1dc092f |
207 | |
6407ad5b |
208 | if (state != NULL) { |
209 | if (state->joy != NULL) |
210 | SDL_JoystickClose(state->joy); |
211 | free(state); |
212 | } |
d1dc092f |
213 | } |
214 | |
215 | static const char * const * |
216 | in_sdl_get_key_names(int *count) |
217 | { |
218 | *count = SDLK_LAST; |
219 | return in_sdl_keys; |
220 | } |
221 | |
222 | /* could use SDL_GetKeyState, but this gives better packing */ |
223 | static void update_keystate(keybits_t *keystate, int sym, int is_down) |
224 | { |
225 | keybits_t *ks_word, mask; |
226 | |
227 | mask = 1; |
228 | mask <<= sym & (KEYBITS_WORD_BITS - 1); |
229 | ks_word = keystate + sym / KEYBITS_WORD_BITS; |
230 | if (is_down) |
231 | *ks_word |= mask; |
232 | else |
233 | *ks_word &= ~mask; |
234 | } |
235 | |
6407ad5b |
236 | static int handle_event(struct in_sdl_state *state, SDL_Event *event, |
237 | int *kc_out, int *down_out) |
d1dc092f |
238 | { |
6407ad5b |
239 | if (event->type != SDL_KEYDOWN && event->type != SDL_KEYUP) |
240 | return 0; |
d1dc092f |
241 | |
6407ad5b |
242 | update_keystate(state->keystate, event->key.keysym.sym, |
243 | event->type == SDL_KEYDOWN); |
244 | if (kc_out != NULL) |
245 | *kc_out = event->key.keysym.sym; |
246 | if (down_out != NULL) |
247 | *down_out = event->type == SDL_KEYDOWN; |
248 | |
249 | return 1; |
250 | } |
d1dc092f |
251 | |
6407ad5b |
252 | static int handle_joy_event(struct in_sdl_state *state, SDL_Event *event, |
253 | int *kc_out, int *down_out) |
254 | { |
255 | int kc = -1, down = 0, ret = 0; |
256 | |
257 | /* FIXME: should ckeck .which */ |
258 | /* TODO: remaining axis */ |
259 | switch (event->type) { |
260 | case SDL_JOYAXISMOTION: |
261 | if (event->jaxis.axis > 1) |
262 | break; |
263 | if (-16384 <= event->jaxis.value && event->jaxis.value <= 16384) { |
264 | kc = state->axis_keydown[event->jaxis.axis]; |
265 | state->axis_keydown[event->jaxis.axis] = 0; |
266 | ret = 1; |
267 | } |
268 | else if (event->jaxis.value < -16384) { |
269 | kc = state->axis_keydown[event->jaxis.axis]; |
270 | if (kc) |
271 | update_keystate(state->keystate, kc, 0); |
272 | kc = event->jaxis.axis ? SDLK_UP : SDLK_LEFT; |
273 | state->axis_keydown[event->jaxis.axis] = kc; |
274 | down = 1; |
275 | ret = 1; |
276 | } |
277 | else if (event->jaxis.value > 16384) { |
278 | kc = state->axis_keydown[event->jaxis.axis]; |
279 | if (kc) |
280 | update_keystate(state->keystate, kc, 0); |
281 | kc = event->jaxis.axis ? SDLK_DOWN : SDLK_RIGHT; |
282 | state->axis_keydown[event->jaxis.axis] = kc; |
283 | down = 1; |
284 | ret = 1; |
285 | } |
286 | break; |
287 | |
288 | case SDL_JOYBUTTONDOWN: |
289 | case SDL_JOYBUTTONUP: |
290 | kc = (int)event->jbutton.button + SDLK_WORLD_0; |
291 | down = event->jbutton.state == SDL_PRESSED; |
292 | ret = 1; |
293 | break; |
d1dc092f |
294 | } |
295 | |
6407ad5b |
296 | if (ret) |
297 | update_keystate(state->keystate, kc, down); |
298 | if (kc_out != NULL) |
299 | *kc_out = kc; |
300 | if (down_out != NULL) |
301 | *down_out = down; |
302 | |
303 | return ret; |
304 | } |
305 | |
306 | #define JOY_EVENTS (SDL_JOYAXISMOTIONMASK | SDL_JOYBALLMOTIONMASK | SDL_JOYHATMOTIONMASK \ |
307 | | SDL_JOYBUTTONDOWNMASK | SDL_JOYBUTTONUPMASK) |
308 | |
309 | static int collect_events(struct in_sdl_state *state, int *one_kc, int *one_down) |
310 | { |
311 | SDL_Event events[4]; |
312 | Uint32 mask = state->joy ? JOY_EVENTS : (SDL_ALLEVENTS & ~JOY_EVENTS); |
313 | int count, maxcount; |
314 | int i, ret, retval = 0; |
315 | |
316 | maxcount = (one_kc != NULL) ? 1 : sizeof(events) / sizeof(events[0]); |
317 | |
318 | SDL_PumpEvents(); |
319 | while (1) { |
320 | count = SDL_PeepEvents(events, maxcount, SDL_GETEVENT, mask); |
321 | if (count <= 0) |
322 | break; |
323 | for (i = 0; i < count; i++) { |
324 | if (state->joy) |
325 | ret = handle_joy_event(state, |
326 | &events[i], one_kc, one_down); |
327 | else |
328 | ret = handle_event(state, |
329 | &events[i], one_kc, one_down); |
330 | retval |= ret; |
331 | if (one_kc != NULL && ret) |
332 | goto out; |
333 | } |
334 | } |
335 | |
336 | out: |
337 | return retval; |
338 | } |
339 | |
340 | static int in_sdl_update(void *drv_data, const int *binds, int *result) |
341 | { |
342 | struct in_sdl_state *state = drv_data; |
343 | keybits_t mask; |
344 | int i, sym, bit, b; |
345 | |
346 | collect_events(state, NULL, NULL); |
347 | |
d1dc092f |
348 | for (i = 0; i < SDLK_LAST / KEYBITS_WORD_BITS + 1; i++) { |
6407ad5b |
349 | mask = state->keystate[i]; |
d1dc092f |
350 | if (mask == 0) |
351 | continue; |
352 | for (bit = 0; mask != 0; bit++, mask >>= 1) { |
353 | if ((mask & 1) == 0) |
354 | continue; |
355 | sym = i * KEYBITS_WORD_BITS + bit; |
356 | |
357 | for (b = 0; b < IN_BINDTYPE_COUNT; b++) |
358 | result[b] |= binds[IN_BIND_OFFS(sym, b)]; |
359 | } |
360 | } |
361 | |
362 | return 0; |
363 | } |
364 | |
365 | static int in_sdl_update_keycode(void *drv_data, int *is_down) |
366 | { |
6407ad5b |
367 | struct in_sdl_state *state = drv_data; |
368 | int ret_kc = -1, ret_down = 0; |
369 | |
370 | collect_events(state, &ret_kc, &ret_down); |
371 | |
d1dc092f |
372 | if (is_down != NULL) |
373 | *is_down = ret_down; |
374 | |
375 | return ret_kc; |
376 | } |
377 | |
6407ad5b |
378 | struct menu_keymap { |
d1dc092f |
379 | short key; |
380 | short pbtn; |
6407ad5b |
381 | }; |
382 | |
383 | static const struct menu_keymap key_pbtn_map[] = |
d1dc092f |
384 | { |
385 | { SDLK_UP, PBTN_UP }, |
386 | { SDLK_DOWN, PBTN_DOWN }, |
387 | { SDLK_LEFT, PBTN_LEFT }, |
388 | { SDLK_RIGHT, PBTN_RIGHT }, |
389 | /* XXX: maybe better set this from it's plat code somehow */ |
390 | { SDLK_RETURN, PBTN_MOK }, |
391 | { SDLK_ESCAPE, PBTN_MBACK }, |
392 | { SDLK_a, PBTN_MA2 }, |
393 | { SDLK_s, PBTN_MA3 }, |
394 | { SDLK_BACKSLASH, PBTN_MENU }, |
395 | { SDLK_LEFTBRACKET, PBTN_L }, |
396 | { SDLK_RIGHTBRACKET, PBTN_R }, |
397 | }; |
d1dc092f |
398 | #define KEY_PBTN_MAP_SIZE (sizeof(key_pbtn_map) / sizeof(key_pbtn_map[0])) |
399 | |
6407ad5b |
400 | static const struct menu_keymap joybtn_pbtn_map[] = |
401 | { |
402 | { SDLK_UP, PBTN_UP }, |
403 | { SDLK_DOWN, PBTN_DOWN }, |
404 | { SDLK_LEFT, PBTN_LEFT }, |
405 | { SDLK_RIGHT, PBTN_RIGHT }, |
406 | /* joystick */ |
407 | { SDLK_WORLD_0, PBTN_MOK }, |
408 | { SDLK_WORLD_1, PBTN_MBACK }, |
409 | { SDLK_WORLD_2, PBTN_MA2 }, |
410 | { SDLK_WORLD_3, PBTN_MA3 }, |
411 | }; |
412 | #define JOYBTN_PBTN_MAP_SIZE (sizeof(joybtn_pbtn_map) / sizeof(joybtn_pbtn_map[0])) |
413 | |
d1dc092f |
414 | static int in_sdl_menu_translate(void *drv_data, int keycode, char *charcode) |
415 | { |
6407ad5b |
416 | struct in_sdl_state *state = drv_data; |
417 | const struct menu_keymap *map; |
418 | int map_len; |
d1dc092f |
419 | int ret = 0; |
420 | int i; |
421 | |
6407ad5b |
422 | map = state->joy ? joybtn_pbtn_map : key_pbtn_map; |
423 | map_len = state->joy ? JOYBTN_PBTN_MAP_SIZE : KEY_PBTN_MAP_SIZE; |
424 | |
d1dc092f |
425 | if (keycode < 0) |
426 | { |
427 | /* menu -> kc */ |
428 | keycode = -keycode; |
6407ad5b |
429 | for (i = 0; i < map_len; i++) |
430 | if (map[i].pbtn == keycode) |
431 | return map[i].key; |
d1dc092f |
432 | } |
433 | else |
434 | { |
6407ad5b |
435 | for (i = 0; i < map_len; i++) { |
436 | if (map[i].key == keycode) { |
437 | ret = map[i].pbtn; |
d1dc092f |
438 | break; |
439 | } |
440 | } |
441 | |
442 | if (charcode != NULL && (unsigned int)keycode < SDLK_LAST && |
443 | in_sdl_keys[keycode] != NULL && in_sdl_keys[keycode][1] == 0) |
444 | { |
445 | ret |= PBTN_CHAR; |
446 | *charcode = in_sdl_keys[keycode][0]; |
447 | } |
448 | } |
449 | |
450 | return ret; |
451 | } |
452 | |
453 | static const in_drv_t in_sdl_drv = { |
454 | .prefix = IN_SDL_PREFIX, |
455 | .probe = in_sdl_probe, |
456 | .free = in_sdl_free, |
457 | .get_key_names = in_sdl_get_key_names, |
458 | .update = in_sdl_update, |
459 | .update_keycode = in_sdl_update_keycode, |
460 | .menu_translate = in_sdl_menu_translate, |
461 | }; |
462 | |
463 | void in_sdl_init(const struct in_default_bind *defbinds) |
464 | { |
465 | in_register_driver(&in_sdl_drv, defbinds); |
466 | } |
467 | |