From b2013c9ca5e8ed307ee37e9f64127e634fb5039f Mon Sep 17 00:00:00 2001 From: notaz Date: Tue, 24 Jul 2012 02:42:24 +0300 Subject: frontend: in_sdl: preliminary joystick support --- frontend/common/in_sdl.c | 227 ++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 187 insertions(+), 40 deletions(-) (limited to 'frontend') diff --git a/frontend/common/in_sdl.c b/frontend/common/in_sdl.c index 14749e5..ce57536 100644 --- a/frontend/common/in_sdl.c +++ b/frontend/common/in_sdl.c @@ -18,6 +18,13 @@ typedef unsigned long keybits_t; #define KEYBITS_WORD_BITS (sizeof(keybits_t) * 8) +struct in_sdl_state { + SDL_Joystick *joy; + int joy_id; + int axis_keydown[2]; + keybits_t keystate[SDLK_LAST / KEYBITS_WORD_BITS + 1]; +}; + static const char * const in_sdl_keys[SDLK_LAST] = { [SDLK_BACKSPACE] = "backspace", [SDLK_TAB] = "tab", @@ -155,24 +162,54 @@ static const char * const in_sdl_keys[SDLK_LAST] = { static void in_sdl_probe(void) { - keybits_t *keystate; + struct in_sdl_state *state; + SDL_Joystick *joy; + int i, joycount; + char name[256]; - keystate = calloc(SDLK_LAST / KEYBITS_WORD_BITS + 1, sizeof(keybits_t)); - if (keystate == NULL) { + state = calloc(1, sizeof(*state)); + if (state == NULL) { fprintf(stderr, "in_sdl: OOM\n"); return; } - in_register(IN_SDL_PREFIX "keys", -1, keystate, SDLK_LAST, + in_register(IN_SDL_PREFIX "keys", -1, state, SDLK_LAST, in_sdl_keys, 0); + + /* joysticks go here too */ + SDL_InitSubSystem(SDL_INIT_JOYSTICK); + + joycount = SDL_NumJoysticks(); + for (i = 0; i < joycount; i++) { + joy = SDL_JoystickOpen(i); + if (joy == NULL) + continue; + + state = calloc(1, sizeof(*state)); + if (state == NULL) { + fprintf(stderr, "in_sdl: OOM\n"); + break; + } + state->joy = joy; + state->joy_id = i; + + snprintf(name, sizeof(name), IN_SDL_PREFIX "%s", SDL_JoystickName(i)); + in_register(name, -1, state, SDLK_LAST, in_sdl_keys, 0); + } + + if (joycount > 0) + SDL_JoystickEventState(SDL_ENABLE); } static void in_sdl_free(void *drv_data) { - keybits_t *keystate = drv_data; + struct in_sdl_state *state = drv_data; - if (keystate != NULL) - free(keystate); + if (state != NULL) { + if (state->joy != NULL) + SDL_JoystickClose(state->joy); + free(state); + } } static const char * const * @@ -196,22 +233,120 @@ static void update_keystate(keybits_t *keystate, int sym, int is_down) *ks_word &= ~mask; } -static int in_sdl_update(void *drv_data, const int *binds, int *result) +static int handle_event(struct in_sdl_state *state, SDL_Event *event, + int *kc_out, int *down_out) { - keybits_t *keystate = drv_data, mask; - SDL_Event event; - int i, sym, bit, b; + if (event->type != SDL_KEYDOWN && event->type != SDL_KEYUP) + return 0; - while (SDL_PollEvent(&event)) { - if (event.type != SDL_KEYDOWN && event.type != SDL_KEYUP) - continue; + update_keystate(state->keystate, event->key.keysym.sym, + event->type == SDL_KEYDOWN); + if (kc_out != NULL) + *kc_out = event->key.keysym.sym; + if (down_out != NULL) + *down_out = event->type == SDL_KEYDOWN; + + return 1; +} - update_keystate(keystate, event.key.keysym.sym, - event.type == SDL_KEYDOWN); +static int handle_joy_event(struct in_sdl_state *state, SDL_Event *event, + int *kc_out, int *down_out) +{ + int kc = -1, down = 0, ret = 0; + + /* FIXME: should ckeck .which */ + /* TODO: remaining axis */ + switch (event->type) { + case SDL_JOYAXISMOTION: + if (event->jaxis.axis > 1) + break; + if (-16384 <= event->jaxis.value && event->jaxis.value <= 16384) { + kc = state->axis_keydown[event->jaxis.axis]; + state->axis_keydown[event->jaxis.axis] = 0; + ret = 1; + } + else if (event->jaxis.value < -16384) { + kc = state->axis_keydown[event->jaxis.axis]; + if (kc) + update_keystate(state->keystate, kc, 0); + kc = event->jaxis.axis ? SDLK_UP : SDLK_LEFT; + state->axis_keydown[event->jaxis.axis] = kc; + down = 1; + ret = 1; + } + else if (event->jaxis.value > 16384) { + kc = state->axis_keydown[event->jaxis.axis]; + if (kc) + update_keystate(state->keystate, kc, 0); + kc = event->jaxis.axis ? SDLK_DOWN : SDLK_RIGHT; + state->axis_keydown[event->jaxis.axis] = kc; + down = 1; + ret = 1; + } + break; + + case SDL_JOYBUTTONDOWN: + case SDL_JOYBUTTONUP: + kc = (int)event->jbutton.button + SDLK_WORLD_0; + down = event->jbutton.state == SDL_PRESSED; + ret = 1; + break; } + if (ret) + update_keystate(state->keystate, kc, down); + if (kc_out != NULL) + *kc_out = kc; + if (down_out != NULL) + *down_out = down; + + return ret; +} + +#define JOY_EVENTS (SDL_JOYAXISMOTIONMASK | SDL_JOYBALLMOTIONMASK | SDL_JOYHATMOTIONMASK \ + | SDL_JOYBUTTONDOWNMASK | SDL_JOYBUTTONUPMASK) + +static int collect_events(struct in_sdl_state *state, int *one_kc, int *one_down) +{ + SDL_Event events[4]; + Uint32 mask = state->joy ? JOY_EVENTS : (SDL_ALLEVENTS & ~JOY_EVENTS); + int count, maxcount; + int i, ret, retval = 0; + + maxcount = (one_kc != NULL) ? 1 : sizeof(events) / sizeof(events[0]); + + SDL_PumpEvents(); + while (1) { + count = SDL_PeepEvents(events, maxcount, SDL_GETEVENT, mask); + if (count <= 0) + break; + for (i = 0; i < count; i++) { + if (state->joy) + ret = handle_joy_event(state, + &events[i], one_kc, one_down); + else + ret = handle_event(state, + &events[i], one_kc, one_down); + retval |= ret; + if (one_kc != NULL && ret) + goto out; + } + } + +out: + return retval; +} + +static int in_sdl_update(void *drv_data, const int *binds, int *result) +{ + struct in_sdl_state *state = drv_data; + keybits_t mask; + int i, sym, bit, b; + + collect_events(state, NULL, NULL); + for (i = 0; i < SDLK_LAST / KEYBITS_WORD_BITS + 1; i++) { - mask = keystate[i]; + mask = state->keystate[i]; if (mask == 0) continue; for (bit = 0; mask != 0; bit++, mask >>= 1) { @@ -229,30 +364,23 @@ static int in_sdl_update(void *drv_data, const int *binds, int *result) static int in_sdl_update_keycode(void *drv_data, int *is_down) { - int ret, ret_kc = -1, ret_down = 0; - SDL_Event event; - - ret = SDL_PollEvent(&event); - if (ret == 0) - goto out; - if (event.type != SDL_KEYDOWN && event.type != SDL_KEYUP) - goto out; - - if (event.key.type == SDL_KEYDOWN) - ret_down = 1; - ret_kc = event.key.keysym.sym; - update_keystate(drv_data, ret_kc, ret_down); -out: + struct in_sdl_state *state = drv_data; + int ret_kc = -1, ret_down = 0; + + collect_events(state, &ret_kc, &ret_down); + if (is_down != NULL) *is_down = ret_down; return ret_kc; } -static const struct { +struct menu_keymap { short key; short pbtn; -} key_pbtn_map[] = +}; + +static const struct menu_keymap key_pbtn_map[] = { { SDLK_UP, PBTN_UP }, { SDLK_DOWN, PBTN_DOWN }, @@ -267,27 +395,46 @@ static const struct { { SDLK_LEFTBRACKET, PBTN_L }, { SDLK_RIGHTBRACKET, PBTN_R }, }; - #define KEY_PBTN_MAP_SIZE (sizeof(key_pbtn_map) / sizeof(key_pbtn_map[0])) +static const struct menu_keymap joybtn_pbtn_map[] = +{ + { SDLK_UP, PBTN_UP }, + { SDLK_DOWN, PBTN_DOWN }, + { SDLK_LEFT, PBTN_LEFT }, + { SDLK_RIGHT, PBTN_RIGHT }, + /* joystick */ + { SDLK_WORLD_0, PBTN_MOK }, + { SDLK_WORLD_1, PBTN_MBACK }, + { SDLK_WORLD_2, PBTN_MA2 }, + { SDLK_WORLD_3, PBTN_MA3 }, +}; +#define JOYBTN_PBTN_MAP_SIZE (sizeof(joybtn_pbtn_map) / sizeof(joybtn_pbtn_map[0])) + static int in_sdl_menu_translate(void *drv_data, int keycode, char *charcode) { + struct in_sdl_state *state = drv_data; + const struct menu_keymap *map; + int map_len; int ret = 0; int i; + map = state->joy ? joybtn_pbtn_map : key_pbtn_map; + map_len = state->joy ? JOYBTN_PBTN_MAP_SIZE : KEY_PBTN_MAP_SIZE; + if (keycode < 0) { /* menu -> kc */ keycode = -keycode; - for (i = 0; i < KEY_PBTN_MAP_SIZE; i++) - if (key_pbtn_map[i].pbtn == keycode) - return key_pbtn_map[i].key; + for (i = 0; i < map_len; i++) + if (map[i].pbtn == keycode) + return map[i].key; } else { - for (i = 0; i < KEY_PBTN_MAP_SIZE; i++) { - if (key_pbtn_map[i].key == keycode) { - ret = key_pbtn_map[i].pbtn; + for (i = 0; i < map_len; i++) { + if (map[i].key == keycode) { + ret = map[i].pbtn; break; } } -- cgit v1.2.3