mirror of
https://github.com/libretro/RetroArch.git
synced 2024-12-11 18:23:45 +00:00
321 lines
8.4 KiB
C
321 lines
8.4 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2013 - Hans-Kristian Arntzen
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* Copyright (C) 2012 - Michael Lelli
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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 <sys/ioctl.h>
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#include <linux/input.h>
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#include <linux/kd.h>
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#include <termios.h>
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#include <unistd.h>
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#include <signal.h>
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#include "../general.h"
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#include "input_common.h"
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static long oldKbmd = 0xffff;
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static struct termios oldTerm, newTerm;
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typedef struct linuxraw_input
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{
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const rarch_joypad_driver_t *joypad;
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bool state[0x80];
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} linuxraw_input_t;
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struct key_bind
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{
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uint8_t x;
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enum retro_key sk;
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};
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static unsigned keysym_lut[RETROK_LAST];
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static const struct key_bind lut_binds[] = {
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{ KEY_ESC, RETROK_ESCAPE },
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{ KEY_1, RETROK_1 },
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{ KEY_2, RETROK_2 },
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{ KEY_3, RETROK_3},
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{ KEY_4, RETROK_4 },
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{ KEY_5, RETROK_5 },
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{ KEY_6, RETROK_6 },
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{ KEY_7, RETROK_7 },
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{ KEY_8, RETROK_8 },
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{ KEY_9, RETROK_9 },
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{ KEY_0, RETROK_0 },
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{ KEY_MINUS, RETROK_MINUS },
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{ KEY_EQUAL, RETROK_EQUALS },
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{ KEY_BACKSPACE, RETROK_BACKSPACE },
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{ KEY_TAB, RETROK_TAB },
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{ KEY_Q, RETROK_q },
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{ KEY_W, RETROK_w },
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{ KEY_E, RETROK_e },
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{ KEY_R, RETROK_r },
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{ KEY_T, RETROK_t },
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{ KEY_Y, RETROK_y },
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{ KEY_U, RETROK_u },
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{ KEY_I, RETROK_i },
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{ KEY_O, RETROK_o },
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{ KEY_P, RETROK_p },
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{ KEY_LEFTBRACE, RETROK_LEFTBRACKET },
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{ KEY_RIGHTBRACE, RETROK_RIGHTBRACKET },
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{ KEY_ENTER, RETROK_RETURN },
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{ KEY_LEFTCTRL, RETROK_LCTRL },
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{ KEY_A, RETROK_a },
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{ KEY_S, RETROK_s },
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{ KEY_D, RETROK_d },
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{ KEY_F, RETROK_f },
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{ KEY_G, RETROK_g },
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{ KEY_H, RETROK_h },
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{ KEY_J, RETROK_j },
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{ KEY_K, RETROK_k },
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{ KEY_L, RETROK_l },
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{ KEY_SEMICOLON, RETROK_SEMICOLON },
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{ KEY_APOSTROPHE, RETROK_QUOTE },
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{ KEY_GRAVE, RETROK_BACKQUOTE },
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{ KEY_LEFTSHIFT, RETROK_LSHIFT },
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{ KEY_BACKSLASH, RETROK_BACKSLASH },
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{ KEY_Z, RETROK_z },
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{ KEY_X, RETROK_x },
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{ KEY_C, RETROK_c },
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{ KEY_V, RETROK_v },
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{ KEY_B, RETROK_b },
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{ KEY_N, RETROK_n },
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{ KEY_M, RETROK_m },
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{ KEY_COMMA, RETROK_COMMA },
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{ KEY_DOT, RETROK_PERIOD },
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{ KEY_SLASH, RETROK_SLASH },
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{ KEY_RIGHTSHIFT, RETROK_RSHIFT },
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{ KEY_KPASTERISK, RETROK_KP_MULTIPLY },
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{ KEY_LEFTALT, RETROK_LALT },
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{ KEY_SPACE, RETROK_SPACE },
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{ KEY_CAPSLOCK, RETROK_CAPSLOCK },
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{ KEY_F1, RETROK_F1 },
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{ KEY_F2, RETROK_F2 },
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{ KEY_F3, RETROK_F3 },
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{ KEY_F4, RETROK_F4 },
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{ KEY_F5, RETROK_F5 },
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{ KEY_F6, RETROK_F6 },
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{ KEY_F7, RETROK_F7 },
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{ KEY_F8, RETROK_F8 },
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{ KEY_F9, RETROK_F9 },
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{ KEY_F10, RETROK_F10 },
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{ KEY_NUMLOCK, RETROK_NUMLOCK },
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{ KEY_SCROLLLOCK, RETROK_SCROLLOCK },
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{ KEY_KP7, RETROK_KP7 },
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{ KEY_KP8, RETROK_KP8 },
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{ KEY_KP9, RETROK_KP9 },
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{ KEY_KPMINUS, RETROK_KP_MINUS },
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{ KEY_KP4, RETROK_KP4 },
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{ KEY_KP5, RETROK_KP5 },
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{ KEY_KP6, RETROK_KP6 },
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{ KEY_KPPLUS, RETROK_KP_PLUS },
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{ KEY_KP1, RETROK_KP1 },
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{ KEY_KP2, RETROK_KP2 },
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{ KEY_KP3, RETROK_KP3 },
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{ KEY_KP0, RETROK_KP0 },
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{ KEY_KPDOT, RETROK_KP_PERIOD },
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{ KEY_F11, RETROK_F11 },
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{ KEY_F12, RETROK_F12 },
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{ KEY_KPENTER, RETROK_KP_ENTER },
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{ KEY_RIGHTCTRL, RETROK_RCTRL },
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{ KEY_KPSLASH, RETROK_KP_DIVIDE },
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{ KEY_SYSRQ, RETROK_PRINT },
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{ KEY_RIGHTALT, RETROK_RALT },
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{ KEY_HOME, RETROK_HOME },
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{ KEY_UP, RETROK_UP },
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{ KEY_PAGEUP, RETROK_PAGEUP },
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{ KEY_LEFT, RETROK_LEFT },
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{ KEY_RIGHT, RETROK_RIGHT },
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{ KEY_END, RETROK_END },
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{ KEY_DOWN, RETROK_DOWN },
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{ KEY_PAGEDOWN, RETROK_PAGEDOWN },
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{ KEY_INSERT, RETROK_INSERT },
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{ KEY_DELETE, RETROK_DELETE },
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{ KEY_PAUSE, RETROK_PAUSE },
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};
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static void init_lut(void)
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{
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memset(keysym_lut, 0, sizeof(keysym_lut));
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for (unsigned i = 0; i < sizeof(lut_binds) / sizeof(lut_binds[0]); i++)
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keysym_lut[lut_binds[i].sk] = lut_binds[i].x;
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}
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static void linuxraw_resetKbmd(void)
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{
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if (oldKbmd != 0xffff)
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{
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ioctl(0, KDSKBMODE, oldKbmd);
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tcsetattr(0, TCSAFLUSH, &oldTerm);
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oldKbmd = 0xffff;
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}
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driver.stdin_claimed = false;
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}
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static void linuxraw_exitGracefully(int sig)
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{
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linuxraw_resetKbmd();
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kill(getpid(), sig);
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}
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static void *linuxraw_input_init(void)
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{
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// only work on terminals
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if (!isatty(0))
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return NULL;
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if (driver.stdin_claimed)
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{
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RARCH_WARN("stdin is already used for ROM loading. Cannot use stdin for input.\n");
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return NULL;
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}
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linuxraw_input_t *linuxraw = (linuxraw_input_t*)calloc(1, sizeof(*linuxraw));
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if (!linuxraw)
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return NULL;
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if (oldKbmd == 0xffff)
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{
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tcgetattr(0, &oldTerm);
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newTerm = oldTerm;
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newTerm.c_lflag &= ~(ECHO | ICANON | ISIG);
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newTerm.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON);
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newTerm.c_cc[VMIN] = 0;
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newTerm.c_cc[VTIME] = 0;
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if (ioctl(0, KDGKBMODE, &oldKbmd) != 0)
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return NULL;
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}
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tcsetattr(0, TCSAFLUSH, &newTerm);
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if (ioctl(0, KDSKBMODE, K_MEDIUMRAW) != 0)
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{
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linuxraw_resetKbmd();
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return NULL;
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}
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struct sigaction sa;
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sa.sa_handler = linuxraw_exitGracefully;
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sa.sa_flags = SA_RESTART | SA_RESETHAND;
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sigemptyset(&sa.sa_mask);
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// trap some standard termination codes so we can restore the keyboard before we lose control
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sigaction(SIGABRT, &sa, NULL);
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sigaction(SIGBUS, &sa, NULL);
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sigaction(SIGFPE, &sa, NULL);
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sigaction(SIGILL, &sa, NULL);
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sigaction(SIGQUIT, &sa, NULL);
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sigaction(SIGSEGV, &sa, NULL);
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atexit(linuxraw_resetKbmd);
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linuxraw->joypad = input_joypad_init_driver(g_settings.input.joypad_driver);
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init_lut();
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driver.stdin_claimed = true; // We need to disable use of stdin command interface if stdin is supposed to be used for input.
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return linuxraw;
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}
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static bool linuxraw_key_pressed(linuxraw_input_t *linuxraw, int key)
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{
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return linuxraw->state[keysym_lut[key]];
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}
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static bool linuxraw_is_pressed(linuxraw_input_t *linuxraw, const struct retro_keybind *binds, unsigned id)
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{
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if (id < RARCH_BIND_LIST_END)
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{
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const struct retro_keybind *bind = &binds[id];
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return bind->valid && linuxraw_key_pressed(linuxraw, binds[id].key);
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}
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else
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return false;
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}
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static bool linuxraw_bind_button_pressed(void *data, int key)
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{
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linuxraw_input_t *linuxraw = (linuxraw_input_t*)data;
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return linuxraw_is_pressed(linuxraw, g_settings.input.binds[0], key) ||
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input_joypad_pressed(linuxraw->joypad, 0, g_settings.input.binds[0], key);
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}
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static int16_t linuxraw_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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linuxraw_input_t *linuxraw = (linuxraw_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 linuxraw_is_pressed(linuxraw, binds[port], id) ||
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input_joypad_pressed(linuxraw->joypad, port, binds[port], id);
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case RETRO_DEVICE_ANALOG:
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return input_joypad_analog(linuxraw->joypad, port, index, id, binds[port]);
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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 linuxraw_input_free(void *data)
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{
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linuxraw_input_t *linuxraw = (linuxraw_input_t*)data;
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if (linuxraw->joypad)
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linuxraw->joypad->destroy();
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linuxraw_resetKbmd();
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free(data);
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}
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static void linuxraw_input_poll(void *data)
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{
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linuxraw_input_t *linuxraw = (linuxraw_input_t*)data;
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uint8_t c;
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uint16_t t;
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while (read(STDIN_FILENO, &c, 1) > 0)
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{
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if (c == KEY_C && (linuxraw->state[KEY_LEFTCTRL] || linuxraw->state[KEY_RIGHTCTRL]))
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kill(getpid(), SIGINT);
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bool pressed = !(c & 0x80);
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c &= ~0x80;
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// ignore extended scancodes
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if (!c)
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read(STDIN_FILENO, &t, 2);
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else
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linuxraw->state[c] = pressed;
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}
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input_joypad_poll(linuxraw->joypad);
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}
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const input_driver_t input_linuxraw = {
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linuxraw_input_init,
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linuxraw_input_poll,
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linuxraw_input_state,
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linuxraw_bind_button_pressed,
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linuxraw_input_free,
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NULL,
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"linuxraw"
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};
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