| 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 | |
| 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 | |
| 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 | { |
| 165 | struct in_sdl_state *state; |
| 166 | SDL_Joystick *joy; |
| 167 | int i, joycount; |
| 168 | char name[256]; |
| 169 | |
| 170 | state = calloc(1, sizeof(*state)); |
| 171 | if (state == NULL) { |
| 172 | fprintf(stderr, "in_sdl: OOM\n"); |
| 173 | return; |
| 174 | } |
| 175 | |
| 176 | in_register(IN_SDL_PREFIX "keys", -1, state, SDLK_LAST, |
| 177 | in_sdl_keys, 0); |
| 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); |
| 202 | } |
| 203 | |
| 204 | static void in_sdl_free(void *drv_data) |
| 205 | { |
| 206 | struct in_sdl_state *state = drv_data; |
| 207 | |
| 208 | if (state != NULL) { |
| 209 | if (state->joy != NULL) |
| 210 | SDL_JoystickClose(state->joy); |
| 211 | free(state); |
| 212 | } |
| 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 | |
| 236 | static int handle_event(struct in_sdl_state *state, SDL_Event *event, |
| 237 | int *kc_out, int *down_out) |
| 238 | { |
| 239 | if (event->type != SDL_KEYDOWN && event->type != SDL_KEYUP) |
| 240 | return 0; |
| 241 | |
| 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 | } |
| 251 | |
| 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; |
| 294 | } |
| 295 | |
| 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 | |
| 348 | for (i = 0; i < SDLK_LAST / KEYBITS_WORD_BITS + 1; i++) { |
| 349 | mask = state->keystate[i]; |
| 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 | { |
| 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 | |
| 372 | if (is_down != NULL) |
| 373 | *is_down = ret_down; |
| 374 | |
| 375 | return ret_kc; |
| 376 | } |
| 377 | |
| 378 | struct menu_keymap { |
| 379 | short key; |
| 380 | short pbtn; |
| 381 | }; |
| 382 | |
| 383 | static const struct menu_keymap key_pbtn_map[] = |
| 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 | }; |
| 398 | #define KEY_PBTN_MAP_SIZE (sizeof(key_pbtn_map) / sizeof(key_pbtn_map[0])) |
| 399 | |
| 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 | |
| 414 | static int in_sdl_menu_translate(void *drv_data, int keycode, char *charcode) |
| 415 | { |
| 416 | struct in_sdl_state *state = drv_data; |
| 417 | const struct menu_keymap *map; |
| 418 | int map_len; |
| 419 | int ret = 0; |
| 420 | int i; |
| 421 | |
| 422 | map = state->joy ? joybtn_pbtn_map : key_pbtn_map; |
| 423 | map_len = state->joy ? JOYBTN_PBTN_MAP_SIZE : KEY_PBTN_MAP_SIZE; |
| 424 | |
| 425 | if (keycode < 0) |
| 426 | { |
| 427 | /* menu -> kc */ |
| 428 | keycode = -keycode; |
| 429 | for (i = 0; i < map_len; i++) |
| 430 | if (map[i].pbtn == keycode) |
| 431 | return map[i].key; |
| 432 | } |
| 433 | else |
| 434 | { |
| 435 | for (i = 0; i < map_len; i++) { |
| 436 | if (map[i].key == keycode) { |
| 437 | ret = map[i].pbtn; |
| 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 | |