mirror of
https://github.com/libretro/RetroArch.git
synced 2024-12-12 19:21:33 +00:00
277 lines
6.9 KiB
C
277 lines
6.9 KiB
C
/* RetroArch - A frontend for libretro.
|
|
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
|
|
* Copyright (C) 2012-2015 - Michael Lelli
|
|
*
|
|
* RetroArch is free software: you can redistribute it and/or modify it under the terms
|
|
* of the GNU General Public License as published by the Free Software Found-
|
|
* ation, either version 3 of the License, or (at your option) any later version.
|
|
*
|
|
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
|
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
* PURPOSE. See the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with RetroArch.
|
|
* If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "../../driver.h"
|
|
|
|
#include <sys/ioctl.h>
|
|
#include <linux/input.h>
|
|
#include <linux/kd.h>
|
|
#include <termios.h>
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include "../../general.h"
|
|
#include "../input_keymaps.h"
|
|
#include "../input_common.h"
|
|
#include "../input_joypad.h"
|
|
|
|
static long oldKbmd = 0xffff;
|
|
static struct termios oldTerm, newTerm;
|
|
|
|
typedef struct linuxraw_input
|
|
{
|
|
const rarch_joypad_driver_t *joypad;
|
|
bool state[0x80];
|
|
} linuxraw_input_t;
|
|
|
|
|
|
static void linuxraw_resetKbmd(void)
|
|
{
|
|
if (oldKbmd != 0xffff)
|
|
{
|
|
ioctl(0, KDSKBMODE, oldKbmd);
|
|
tcsetattr(0, TCSAFLUSH, &oldTerm);
|
|
oldKbmd = 0xffff;
|
|
}
|
|
|
|
driver.stdin_claimed = false;
|
|
}
|
|
|
|
static void linuxraw_exitGracefully(int sig)
|
|
{
|
|
linuxraw_resetKbmd();
|
|
kill(getpid(), sig);
|
|
}
|
|
|
|
static void *linuxraw_input_init(void)
|
|
{
|
|
struct sigaction sa;
|
|
linuxraw_input_t *linuxraw = NULL;
|
|
|
|
/* Only work on terminals. */
|
|
if (!isatty(0))
|
|
return NULL;
|
|
|
|
if (driver.stdin_claimed)
|
|
{
|
|
RARCH_WARN("stdin is already used for content loading. Cannot use stdin for input.\n");
|
|
return NULL;
|
|
}
|
|
|
|
linuxraw = (linuxraw_input_t*)calloc(1, sizeof(*linuxraw));
|
|
if (!linuxraw)
|
|
return NULL;
|
|
|
|
if (oldKbmd == 0xffff)
|
|
{
|
|
tcgetattr(0, &oldTerm);
|
|
newTerm = oldTerm;
|
|
newTerm.c_lflag &= ~(ECHO | ICANON | ISIG);
|
|
newTerm.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON);
|
|
newTerm.c_cc[VMIN] = 0;
|
|
newTerm.c_cc[VTIME] = 0;
|
|
|
|
if (ioctl(0, KDGKBMODE, &oldKbmd) != 0)
|
|
{
|
|
free(linuxraw);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
tcsetattr(0, TCSAFLUSH, &newTerm);
|
|
|
|
if (ioctl(0, KDSKBMODE, K_MEDIUMRAW) != 0)
|
|
{
|
|
linuxraw_resetKbmd();
|
|
free(linuxraw);
|
|
return NULL;
|
|
}
|
|
|
|
sa.sa_handler = linuxraw_exitGracefully;
|
|
sa.sa_flags = SA_RESTART | SA_RESETHAND;
|
|
sigemptyset(&sa.sa_mask);
|
|
|
|
/* Trap some standard termination codes so we
|
|
* can restore the keyboard before we lose control. */
|
|
sigaction(SIGABRT, &sa, NULL);
|
|
sigaction(SIGBUS, &sa, NULL);
|
|
sigaction(SIGFPE, &sa, NULL);
|
|
sigaction(SIGILL, &sa, NULL);
|
|
sigaction(SIGQUIT, &sa, NULL);
|
|
sigaction(SIGSEGV, &sa, NULL);
|
|
|
|
atexit(linuxraw_resetKbmd);
|
|
|
|
linuxraw->joypad = input_joypad_init_driver(g_settings.input.joypad_driver);
|
|
input_keymaps_init_keyboard_lut(rarch_key_map_linux);
|
|
|
|
/* We need to disable use of stdin command interface if
|
|
* stdin is supposed to be used for input. */
|
|
driver.stdin_claimed = true;
|
|
|
|
return linuxraw;
|
|
}
|
|
|
|
static bool linuxraw_key_pressed(linuxraw_input_t *linuxraw, int key)
|
|
{
|
|
unsigned sym = input_keymaps_translate_rk_to_keysym((enum retro_key)key);
|
|
return linuxraw->state[sym];
|
|
}
|
|
|
|
static bool linuxraw_is_pressed(linuxraw_input_t *linuxraw,
|
|
const struct retro_keybind *binds, unsigned id)
|
|
{
|
|
const struct retro_keybind *bind = &binds[id];
|
|
|
|
if (id >= RARCH_BIND_LIST_END)
|
|
return false;
|
|
if (!bind)
|
|
return false;
|
|
|
|
return bind->valid && linuxraw_key_pressed(linuxraw, binds[id].key);
|
|
}
|
|
|
|
static int16_t linuxraw_analog_pressed(linuxraw_input_t *linuxraw,
|
|
const struct retro_keybind *binds, unsigned idx, unsigned id)
|
|
{
|
|
int16_t pressed_minus = 0, pressed_plus = 0;
|
|
unsigned id_minus = 0;
|
|
unsigned id_plus = 0;
|
|
|
|
input_conv_analog_id_to_bind_id(idx, id, &id_minus, &id_plus);
|
|
|
|
if (linuxraw_is_pressed(linuxraw, binds, id_minus))
|
|
pressed_minus = -0x7fff;
|
|
if (linuxraw_is_pressed(linuxraw, binds, id_plus))
|
|
pressed_plus = 0x7fff;
|
|
|
|
return pressed_plus + pressed_minus;
|
|
}
|
|
|
|
static bool linuxraw_bind_button_pressed(void *data, int key)
|
|
{
|
|
linuxraw_input_t *linuxraw = (linuxraw_input_t*)data;
|
|
return linuxraw_is_pressed(linuxraw, g_settings.input.binds[0], key) ||
|
|
input_joypad_pressed(linuxraw->joypad, 0, g_settings.input.binds[0], key);
|
|
}
|
|
|
|
static int16_t linuxraw_input_state(void *data,
|
|
const struct retro_keybind **binds, unsigned port,
|
|
unsigned device, unsigned idx, unsigned id)
|
|
{
|
|
int16_t ret;
|
|
linuxraw_input_t *linuxraw = (linuxraw_input_t*)data;
|
|
|
|
switch (device)
|
|
{
|
|
case RETRO_DEVICE_JOYPAD:
|
|
return linuxraw_is_pressed(linuxraw, binds[port], id) ||
|
|
input_joypad_pressed(linuxraw->joypad, port, binds[port], id);
|
|
|
|
case RETRO_DEVICE_ANALOG:
|
|
ret = linuxraw_analog_pressed(linuxraw, binds[port], idx, id);
|
|
if (!ret)
|
|
ret = input_joypad_analog(linuxraw->joypad, port, idx, id, binds[port]);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void linuxraw_input_free(void *data)
|
|
{
|
|
linuxraw_input_t *linuxraw = (linuxraw_input_t*)data;
|
|
|
|
if (!linuxraw)
|
|
return;
|
|
|
|
if (linuxraw->joypad)
|
|
linuxraw->joypad->destroy();
|
|
|
|
linuxraw_resetKbmd();
|
|
free(data);
|
|
}
|
|
|
|
static bool linuxraw_set_rumble(void *data, unsigned port,
|
|
enum retro_rumble_effect effect, uint16_t strength)
|
|
{
|
|
linuxraw_input_t *linuxraw = (linuxraw_input_t*)data;
|
|
if (!linuxraw)
|
|
return false;
|
|
return input_joypad_set_rumble(linuxraw->joypad, port, effect, strength);
|
|
}
|
|
|
|
static const rarch_joypad_driver_t *linuxraw_get_joypad_driver(void *data)
|
|
{
|
|
linuxraw_input_t *linuxraw = (linuxraw_input_t*)data;
|
|
if (!linuxraw)
|
|
return false;
|
|
return linuxraw->joypad;
|
|
}
|
|
|
|
static void linuxraw_input_poll(void *data)
|
|
{
|
|
uint8_t c;
|
|
uint16_t t;
|
|
linuxraw_input_t *linuxraw = (linuxraw_input_t*)data;
|
|
|
|
while (read(STDIN_FILENO, &c, 1) > 0)
|
|
{
|
|
bool pressed;
|
|
|
|
if (c == KEY_C && (linuxraw->state[KEY_LEFTCTRL] || linuxraw->state[KEY_RIGHTCTRL]))
|
|
kill(getpid(), SIGINT);
|
|
|
|
pressed = !(c & 0x80);
|
|
c &= ~0x80;
|
|
|
|
// ignore extended scancodes
|
|
if (!c)
|
|
read(STDIN_FILENO, &t, 2);
|
|
else
|
|
linuxraw->state[c] = pressed;
|
|
}
|
|
|
|
if (linuxraw->joypad)
|
|
linuxraw->joypad->poll();
|
|
}
|
|
|
|
static uint64_t linuxraw_get_capabilities(void *data)
|
|
{
|
|
uint64_t caps = 0;
|
|
|
|
(void)data;
|
|
|
|
caps |= (1 << RETRO_DEVICE_JOYPAD);
|
|
caps |= (1 << RETRO_DEVICE_ANALOG);
|
|
|
|
return caps;
|
|
}
|
|
|
|
input_driver_t input_linuxraw = {
|
|
linuxraw_input_init,
|
|
linuxraw_input_poll,
|
|
linuxraw_input_state,
|
|
linuxraw_bind_button_pressed,
|
|
linuxraw_input_free,
|
|
NULL,
|
|
NULL,
|
|
linuxraw_get_capabilities,
|
|
"linuxraw",
|
|
NULL,
|
|
linuxraw_set_rumble,
|
|
linuxraw_get_joypad_driver,
|
|
};
|