mirror of
https://github.com/libretro/RetroArch.git
synced 2024-12-14 12:49:22 +00:00
350 lines
9.2 KiB
C
350 lines
9.2 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "../driver.h"
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#include "SDL.h"
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#include "../gfx/gfx_context.h"
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#include "../boolean.h"
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#include "../general.h"
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#include <stdint.h>
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#include <stdlib.h>
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#include "../libretro.h"
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#include "input_common.h"
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typedef struct sdl_input
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{
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const rarch_joypad_driver_t *joypad;
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int mouse_x, mouse_y;
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int mouse_abs_x, mouse_abs_y;
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int mouse_l, mouse_r, mouse_m, mouse_wu, mouse_wd, mouse_wl, mouse_wr;
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} sdl_input_t;
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static void *sdl_input_init(void)
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{
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input_init_keyboard_lut(rarch_key_map_sdl);
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sdl_input_t *sdl = (sdl_input_t*)calloc(1, sizeof(*sdl));
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if (!sdl)
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return NULL;
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sdl->joypad = input_joypad_init_driver(g_settings.input.joypad_driver);
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RARCH_LOG("[SDL]: Input driver initialized.\n");
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return sdl;
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}
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static bool sdl_key_pressed(int key)
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{
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if (key >= RETROK_LAST)
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return false;
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int sym = input_translate_rk_to_keysym((enum retro_key)key);
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int num_keys;
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const uint8_t *keymap;
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#if HAVE_SDL2
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keymap = SDL_GetKeyboardState(&num_keys);
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#else
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keymap = SDL_GetKeyState(&num_keys);
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#endif
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if (sym < 0 || sym >= num_keys)
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return false;
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return keymap[sym];
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}
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static bool sdl_is_pressed(sdl_input_t *sdl, unsigned port_num, const struct retro_keybind *binds, unsigned key)
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{
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if (sdl_key_pressed(binds[key].key))
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return true;
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return input_joypad_pressed(sdl->joypad, port_num, binds, key);
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}
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static int16_t sdl_analog_pressed(sdl_input_t *sdl, const struct retro_keybind *binds,
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unsigned index, unsigned id)
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{
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unsigned id_minus = 0;
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unsigned id_plus = 0;
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input_conv_analog_id_to_bind_id(index, id, &id_minus, &id_plus);
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int16_t pressed_minus = sdl_key_pressed(binds[id_minus].key) ? -0x7fff : 0;
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int16_t pressed_plus = sdl_key_pressed(binds[id_plus].key) ? 0x7fff : 0;
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return pressed_plus + pressed_minus;
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}
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static bool sdl_bind_button_pressed(void *data, int key)
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{
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const struct retro_keybind *binds = g_settings.input.binds[0];
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if (key >= 0 && key < RARCH_BIND_LIST_END)
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return sdl_is_pressed((sdl_input_t*)data, 0, binds, key);
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else
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return false;
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}
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static int16_t sdl_joypad_device_state(sdl_input_t *sdl, const struct retro_keybind **binds_,
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unsigned port_num, unsigned id)
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{
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const struct retro_keybind *binds = binds_[port_num];
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if (id < RARCH_BIND_LIST_END)
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return binds[id].valid && sdl_is_pressed(sdl, port_num, binds, id);
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else
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return 0;
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}
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static int16_t sdl_analog_device_state(sdl_input_t *sdl, const struct retro_keybind **binds,
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unsigned port_num, unsigned index, unsigned id)
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{
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int16_t ret = sdl_analog_pressed(sdl, binds[port_num], index, id);
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if (!ret)
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ret = input_joypad_analog(sdl->joypad, port_num, index, id, binds[port_num]);
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return ret;
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}
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static int16_t sdl_keyboard_device_state(sdl_input_t *sdl, unsigned id)
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{
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return sdl_key_pressed(id);
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}
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static int16_t sdl_mouse_device_state(sdl_input_t *sdl, unsigned id)
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{
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switch (id)
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{
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case RETRO_DEVICE_ID_MOUSE_LEFT:
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return sdl->mouse_l;
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case RETRO_DEVICE_ID_MOUSE_RIGHT:
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return sdl->mouse_r;
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case RETRO_DEVICE_ID_MOUSE_WHEELUP:
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return sdl->mouse_wu;
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case RETRO_DEVICE_ID_MOUSE_WHEELDOWN:
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return sdl->mouse_wd;
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case RETRO_DEVICE_ID_MOUSE_X:
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return sdl->mouse_x;
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case RETRO_DEVICE_ID_MOUSE_Y:
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return sdl->mouse_y;
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case RETRO_DEVICE_ID_MOUSE_MIDDLE:
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return sdl->mouse_m;
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default:
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return 0;
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}
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}
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static int16_t sdl_pointer_device_state(sdl_input_t *sdl, unsigned index, unsigned id, bool screen)
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{
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if (index != 0)
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return 0;
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int16_t res_x = 0, res_y = 0, res_screen_x = 0, res_screen_y = 0;
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bool valid = input_translate_coord_viewport(sdl->mouse_abs_x, sdl->mouse_abs_y,
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&res_x, &res_y, &res_screen_x, &res_screen_y);
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if (!valid)
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return 0;
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if (screen)
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{
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res_x = res_screen_x;
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res_y = res_screen_y;
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}
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bool inside = (res_x >= -0x7fff) && (res_y >= -0x7fff);
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if (!inside)
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return 0;
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switch (id)
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{
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case RETRO_DEVICE_ID_POINTER_X:
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return res_x;
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case RETRO_DEVICE_ID_POINTER_Y:
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return res_y;
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case RETRO_DEVICE_ID_POINTER_PRESSED:
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return sdl->mouse_l;
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default:
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return 0;
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}
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}
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static int16_t sdl_lightgun_device_state(sdl_input_t *sdl, unsigned id)
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{
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switch (id)
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{
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case RETRO_DEVICE_ID_LIGHTGUN_X:
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return sdl->mouse_x;
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case RETRO_DEVICE_ID_LIGHTGUN_Y:
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return sdl->mouse_y;
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case RETRO_DEVICE_ID_LIGHTGUN_TRIGGER:
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return sdl->mouse_l;
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case RETRO_DEVICE_ID_LIGHTGUN_CURSOR:
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return sdl->mouse_m;
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case RETRO_DEVICE_ID_LIGHTGUN_TURBO:
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return sdl->mouse_r;
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case RETRO_DEVICE_ID_LIGHTGUN_START:
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return sdl->mouse_m && sdl->mouse_r;
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case RETRO_DEVICE_ID_LIGHTGUN_PAUSE:
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return sdl->mouse_m && sdl->mouse_l;
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default:
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return 0;
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}
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}
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static int16_t sdl_input_state(void *data_, const struct retro_keybind **binds, unsigned port, unsigned device, unsigned index, unsigned id)
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{
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sdl_input_t *data = (sdl_input_t*)data_;
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switch (device)
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{
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case RETRO_DEVICE_JOYPAD:
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return sdl_joypad_device_state(data, binds, port, id);
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case RETRO_DEVICE_ANALOG:
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return sdl_analog_device_state(data, binds, port, index, id);
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case RETRO_DEVICE_MOUSE:
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return sdl_mouse_device_state(data, id);
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case RETRO_DEVICE_POINTER:
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case RARCH_DEVICE_POINTER_SCREEN:
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return sdl_pointer_device_state(data, index, id, device == RARCH_DEVICE_POINTER_SCREEN);
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case RETRO_DEVICE_KEYBOARD:
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return sdl_keyboard_device_state(data, id);
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case RETRO_DEVICE_LIGHTGUN:
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return sdl_lightgun_device_state(data, id);
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default:
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return 0;
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}
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}
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static void sdl_input_free(void *data)
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{
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if (!data)
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return;
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// Flush out all pending events.
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#ifdef HAVE_SDL2
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SDL_FlushEvents(SDL_FIRSTEVENT, SDL_LASTEVENT);
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#else
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SDL_Event event;
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while (SDL_PollEvent(&event));
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#endif
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sdl_input_t *sdl = (sdl_input_t*)data;
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if (sdl->joypad)
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sdl->joypad->destroy();
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free(data);
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}
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#ifdef HAVE_SDL2
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static void sdl_grab_mouse(void *data, bool state)
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{
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sdl_input_t *sdl = (sdl_input_t*)data;
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if (driver.video == &video_sdl2)
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{
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/* first member of sdl2_video_t is the window */
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struct temp{
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SDL_Window *w;
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};
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SDL_SetWindowGrab(((struct temp*)driver.video_data)->w,
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state ? SDL_TRUE : SDL_FALSE);
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}
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}
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#endif
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static bool sdl_set_rumble(void *data, unsigned port, enum retro_rumble_effect effect, uint16_t strength)
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{
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sdl_input_t *sdl = (sdl_input_t*)data;
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return input_joypad_set_rumble(sdl->joypad, port, effect, strength);
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}
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static const rarch_joypad_driver_t *sdl_get_joypad_driver(void *data)
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{
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sdl_input_t *sdl = (sdl_input_t*)data;
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return sdl->joypad;
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}
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static void sdl_poll_mouse(sdl_input_t *sdl)
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{
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Uint8 btn = SDL_GetRelativeMouseState(&sdl->mouse_x, &sdl->mouse_y);
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SDL_GetMouseState(&sdl->mouse_abs_x, &sdl->mouse_abs_y);
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sdl->mouse_l = SDL_BUTTON(SDL_BUTTON_LEFT) & btn ? 1 : 0;
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sdl->mouse_r = SDL_BUTTON(SDL_BUTTON_RIGHT) & btn ? 1 : 0;
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sdl->mouse_m = SDL_BUTTON(SDL_BUTTON_MIDDLE) & btn ? 1 : 0;
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#ifndef HAVE_SDL2
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sdl->mouse_wu = SDL_BUTTON(SDL_BUTTON_WHEELUP) & btn ? 1 : 0;
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sdl->mouse_wd = SDL_BUTTON(SDL_BUTTON_WHEELDOWN) & btn ? 1 : 0;
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#endif
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}
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static void sdl_input_poll(void *data)
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{
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SDL_PumpEvents();
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sdl_input_t *sdl = (sdl_input_t*)data;
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if (sdl->joypad)
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sdl->joypad->poll();
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sdl_poll_mouse(sdl);
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#ifdef HAVE_SDL2
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SDL_Event event;
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while (SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_MOUSEWHEEL, SDL_MOUSEWHEEL) > 0)
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{
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if (event.type == SDL_MOUSEWHEEL)
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{
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sdl->mouse_wu = event.wheel.y < 0;
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sdl->mouse_wd = event.wheel.y > 0;
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sdl->mouse_wl = event.wheel.x < 0;
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sdl->mouse_wr = event.wheel.x > 0;
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break;
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}
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}
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#endif
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}
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static uint64_t sdl_get_capabilities(void *data)
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{
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uint64_t caps = 0;
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caps |= (1 << RETRO_DEVICE_JOYPAD);
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caps |= (1 << RETRO_DEVICE_MOUSE);
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caps |= (1 << RETRO_DEVICE_KEYBOARD);
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caps |= (1 << RETRO_DEVICE_LIGHTGUN);
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caps |= (1 << RETRO_DEVICE_POINTER);
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caps |= (1 << RETRO_DEVICE_ANALOG);
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return caps;
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}
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const input_driver_t input_sdl = {
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sdl_input_init,
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sdl_input_poll,
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sdl_input_state,
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sdl_bind_button_pressed,
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sdl_input_free,
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NULL,
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NULL,
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sdl_get_capabilities,
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#ifdef HAVE_SDL2
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"sdl2",
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sdl_grab_mouse,
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#else
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"sdl",
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NULL,
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#endif
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sdl_set_rumble,
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sdl_get_joypad_driver,
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};
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