mirror of
https://github.com/CTCaer/RetroArch.git
synced 2024-12-23 11:18:25 +00:00
303 lines
7.4 KiB
C
303 lines
7.4 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2012 - 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 "linuxraw_input.h"
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#include "rarch_sdl_input.h"
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static long oldKbmd = 0xFFFF;
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static struct termios oldTerm, newTerm;
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struct key_bind
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{
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uint8_t x;
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enum rarch_key sk;
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};
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static unsigned keysym_lut[SK_LAST];
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static const struct key_bind lut_binds[] = {
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{ KEY_ESC, SK_ESCAPE },
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{ KEY_1, SK_1 },
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{ KEY_2, SK_2 },
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{ KEY_3, SK_3},
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{ KEY_4, SK_4 },
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{ KEY_5, SK_5 },
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{ KEY_6, SK_6 },
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{ KEY_7, SK_7 },
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{ KEY_8, SK_8 },
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{ KEY_9, SK_9 },
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{ KEY_0, SK_0 },
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{ KEY_MINUS, SK_MINUS },
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{ KEY_EQUAL, SK_EQUALS },
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{ KEY_BACKSPACE, SK_BACKSPACE },
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{ KEY_TAB, SK_TAB },
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{ KEY_Q, SK_q },
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{ KEY_W, SK_w },
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{ KEY_E, SK_e },
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{ KEY_R, SK_r },
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{ KEY_T, SK_t },
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{ KEY_Y, SK_y },
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{ KEY_U, SK_u },
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{ KEY_I, SK_i },
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{ KEY_O, SK_o },
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{ KEY_P, SK_p },
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{ KEY_LEFTBRACE, SK_LEFTBRACKET },
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{ KEY_RIGHTBRACE, SK_RIGHTBRACKET },
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{ KEY_ENTER, SK_RETURN },
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{ KEY_LEFTCTRL, SK_LCTRL },
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{ KEY_A, SK_a },
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{ KEY_S, SK_s },
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{ KEY_D, SK_d },
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{ KEY_F, SK_f },
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{ KEY_G, SK_g },
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{ KEY_H, SK_h },
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{ KEY_J, SK_j },
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{ KEY_K, SK_k },
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{ KEY_L, SK_l },
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{ KEY_SEMICOLON, SK_SEMICOLON },
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{ KEY_APOSTROPHE, SK_QUOTE },
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{ KEY_GRAVE, SK_BACKQUOTE },
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{ KEY_LEFTSHIFT, SK_LSHIFT },
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{ KEY_BACKSLASH, SK_BACKSLASH },
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{ KEY_Z, SK_z },
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{ KEY_X, SK_x },
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{ KEY_C, SK_c },
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{ KEY_V, SK_v },
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{ KEY_B, SK_b },
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{ KEY_N, SK_n },
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{ KEY_M, SK_m },
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{ KEY_COMMA, SK_COMMA },
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{ KEY_DOT, SK_PERIOD },
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{ KEY_SLASH, SK_SLASH },
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{ KEY_RIGHTSHIFT, SK_RSHIFT },
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{ KEY_KPASTERISK, SK_KP_MULTIPLY },
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{ KEY_LEFTALT, SK_LALT },
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{ KEY_SPACE, SK_SPACE },
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{ KEY_CAPSLOCK, SK_CAPSLOCK },
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{ KEY_F1, SK_F1 },
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{ KEY_F2, SK_F2 },
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{ KEY_F3, SK_F3 },
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{ KEY_F4, SK_F4 },
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{ KEY_F5, SK_F5 },
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{ KEY_F6, SK_F6 },
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{ KEY_F7, SK_F7 },
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{ KEY_F8, SK_F8 },
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{ KEY_F9, SK_F9 },
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{ KEY_F10, SK_F10 },
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{ KEY_NUMLOCK, SK_NUMLOCK },
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{ KEY_SCROLLLOCK, SK_SCROLLOCK },
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{ KEY_KP7, SK_KP7 },
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{ KEY_KP8, SK_KP8 },
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{ KEY_KP9, SK_KP9 },
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{ KEY_KPMINUS, SK_KP_MINUS },
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{ KEY_KP4, SK_KP4 },
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{ KEY_KP5, SK_KP5 },
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{ KEY_KP6, SK_KP6 },
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{ KEY_KPPLUS, SK_KP_PLUS },
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{ KEY_KP1, SK_KP1 },
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{ KEY_KP2, SK_KP2 },
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{ KEY_KP3, SK_KP3 },
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{ KEY_KP0, SK_KP0 },
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{ KEY_KPDOT, SK_KP_PERIOD },
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{ KEY_F11, SK_F11 },
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{ KEY_F12, SK_F12 },
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{ KEY_KPENTER, SK_KP_ENTER },
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{ KEY_RIGHTCTRL, SK_RCTRL },
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{ KEY_KPSLASH, SK_KP_DIVIDE },
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{ KEY_SYSRQ, SK_PRINT },
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{ KEY_RIGHTALT, SK_RALT },
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{ KEY_HOME, SK_HOME },
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{ KEY_UP, SK_UP },
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{ KEY_PAGEUP, SK_PAGEUP },
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{ KEY_LEFT, SK_LEFT },
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{ KEY_RIGHT, SK_RIGHT },
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{ KEY_END, SK_END },
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{ KEY_DOWN, SK_DOWN },
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{ KEY_PAGEDOWN, SK_PAGEDOWN },
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{ KEY_INSERT, SK_INSERT },
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{ KEY_DELETE, SK_DELETE },
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{ KEY_PAUSE, SK_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()
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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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}
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static void linuxraw_exitGracefully(int sig)
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{
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linuxraw_resetKbmd();
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signal(sig, SIG_DFL);
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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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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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// trap some standard termination codes so we can restore the keyboard before we lose control
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signal(SIGABRT, linuxraw_exitGracefully);
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signal(SIGBUS, linuxraw_exitGracefully);
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signal(SIGFPE, linuxraw_exitGracefully);
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signal(SIGILL, linuxraw_exitGracefully);
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signal(SIGINT, linuxraw_exitGracefully);
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signal(SIGQUIT, linuxraw_exitGracefully);
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signal(SIGSEGV, linuxraw_exitGracefully);
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signal(SIGTERM, linuxraw_exitGracefully);
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atexit(linuxraw_resetKbmd);
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linuxraw->sdl = (sdl_input_t*)input_sdl.init();
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if (!linuxraw->sdl)
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{
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linuxraw_resetKbmd();
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free(linuxraw);
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return NULL;
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}
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init_lut();
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linuxraw->sdl->use_keyboard = false;
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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 snes_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 snes_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_sdl.key_pressed(linuxraw->sdl, key);
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}
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static int16_t linuxraw_input_state(void *data, const struct snes_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_sdl.input_state(linuxraw->sdl, binds, port, device, index, 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 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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input_sdl.free(linuxraw->sdl);
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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(0, &c, 1))
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{
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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(0, &t, 2);
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linuxraw->state[c] = pressed;
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}
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input_sdl.poll(linuxraw->sdl);
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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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"linuxraw"
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};
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