diff options
author | 2016-02-27 16:28:05 +0100 | |
---|---|---|
committer | 2016-02-27 16:53:49 +0100 | |
commit | cf6dc7d370407914020f3e623719f09c8668c692 (patch) | |
tree | 46b3416d091b4c09b50fba7ffcbd310aed032cc8 /3rdparty/SDL2/src/core/linux/SDL_evdev.c | |
parent | 64135e73f973d9b95beb0c60b65feb34fbfec64a (diff) |
Placed SDL2 source since we need it on some platforms (nw)
Diffstat (limited to '3rdparty/SDL2/src/core/linux/SDL_evdev.c')
-rw-r--r-- | 3rdparty/SDL2/src/core/linux/SDL_evdev.c | 808 |
1 files changed, 808 insertions, 0 deletions
diff --git a/3rdparty/SDL2/src/core/linux/SDL_evdev.c b/3rdparty/SDL2/src/core/linux/SDL_evdev.c new file mode 100644 index 00000000000..a8f2b138e56 --- /dev/null +++ b/3rdparty/SDL2/src/core/linux/SDL_evdev.c @@ -0,0 +1,808 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ +#include "../../SDL_internal.h" + +#ifdef SDL_INPUT_LINUXEV + +/* This is based on the linux joystick driver */ +/* References: https://www.kernel.org/doc/Documentation/input/input.txt + * https://www.kernel.org/doc/Documentation/input/event-codes.txt + * /usr/include/linux/input.h + * The evtest application is also useful to debug the protocol + */ + + +#include "SDL_evdev.h" +#define _THIS SDL_EVDEV_PrivateData *_this +static _THIS = NULL; + +#include <sys/stat.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/ioctl.h> +#include <limits.h> /* For the definition of PATH_MAX */ +#include <linux/input.h> +#ifdef SDL_INPUT_LINUXKD +#include <linux/kd.h> +#include <linux/keyboard.h> +#endif + + +/* We need this to prevent keystrokes from appear in the console */ +#ifndef KDSKBMUTE +#define KDSKBMUTE 0x4B51 +#endif +#ifndef KDSKBMODE +#define KDSKBMODE 0x4B45 +#endif +#ifndef K_OFF +#define K_OFF 0x04 +#endif + +#include "SDL.h" +#include "SDL_assert.h" +#include "SDL_endian.h" +#include "../../core/linux/SDL_udev.h" +#include "SDL_scancode.h" +#include "../../events/SDL_events_c.h" + +/* This isn't defined in older Linux kernel headers */ +#ifndef SYN_DROPPED +#define SYN_DROPPED 3 +#endif + +static SDL_Scancode SDL_EVDEV_translate_keycode(int keycode); +static void SDL_EVDEV_sync_device(SDL_evdevlist_item *item); +static int SDL_EVDEV_device_removed(const char *devpath); + +#if SDL_USE_LIBUDEV +static int SDL_EVDEV_device_added(const char *devpath); +void SDL_EVDEV_udev_callback(SDL_UDEV_deviceevent udev_type, int udev_class, const char *devpath); +#endif /* SDL_USE_LIBUDEV */ + +static SDL_Scancode EVDEV_Keycodes[] = { + SDL_SCANCODE_UNKNOWN, /* KEY_RESERVED 0 */ + SDL_SCANCODE_ESCAPE, /* KEY_ESC 1 */ + SDL_SCANCODE_1, /* KEY_1 2 */ + SDL_SCANCODE_2, /* KEY_2 3 */ + SDL_SCANCODE_3, /* KEY_3 4 */ + SDL_SCANCODE_4, /* KEY_4 5 */ + SDL_SCANCODE_5, /* KEY_5 6 */ + SDL_SCANCODE_6, /* KEY_6 7 */ + SDL_SCANCODE_7, /* KEY_7 8 */ + SDL_SCANCODE_8, /* KEY_8 9 */ + SDL_SCANCODE_9, /* KEY_9 10 */ + SDL_SCANCODE_0, /* KEY_0 11 */ + SDL_SCANCODE_MINUS, /* KEY_MINUS 12 */ + SDL_SCANCODE_EQUALS, /* KEY_EQUAL 13 */ + SDL_SCANCODE_BACKSPACE, /* KEY_BACKSPACE 14 */ + SDL_SCANCODE_TAB, /* KEY_TAB 15 */ + SDL_SCANCODE_Q, /* KEY_Q 16 */ + SDL_SCANCODE_W, /* KEY_W 17 */ + SDL_SCANCODE_E, /* KEY_E 18 */ + SDL_SCANCODE_R, /* KEY_R 19 */ + SDL_SCANCODE_T, /* KEY_T 20 */ + SDL_SCANCODE_Y, /* KEY_Y 21 */ + SDL_SCANCODE_U, /* KEY_U 22 */ + SDL_SCANCODE_I, /* KEY_I 23 */ + SDL_SCANCODE_O, /* KEY_O 24 */ + SDL_SCANCODE_P, /* KEY_P 25 */ + SDL_SCANCODE_LEFTBRACKET, /* KEY_LEFTBRACE 26 */ + SDL_SCANCODE_RIGHTBRACKET, /* KEY_RIGHTBRACE 27 */ + SDL_SCANCODE_RETURN, /* KEY_ENTER 28 */ + SDL_SCANCODE_LCTRL, /* KEY_LEFTCTRL 29 */ + SDL_SCANCODE_A, /* KEY_A 30 */ + SDL_SCANCODE_S, /* KEY_S 31 */ + SDL_SCANCODE_D, /* KEY_D 32 */ + SDL_SCANCODE_F, /* KEY_F 33 */ + SDL_SCANCODE_G, /* KEY_G 34 */ + SDL_SCANCODE_H, /* KEY_H 35 */ + SDL_SCANCODE_J, /* KEY_J 36 */ + SDL_SCANCODE_K, /* KEY_K 37 */ + SDL_SCANCODE_L, /* KEY_L 38 */ + SDL_SCANCODE_SEMICOLON, /* KEY_SEMICOLON 39 */ + SDL_SCANCODE_APOSTROPHE, /* KEY_APOSTROPHE 40 */ + SDL_SCANCODE_GRAVE, /* KEY_GRAVE 41 */ + SDL_SCANCODE_LSHIFT, /* KEY_LEFTSHIFT 42 */ + SDL_SCANCODE_BACKSLASH, /* KEY_BACKSLASH 43 */ + SDL_SCANCODE_Z, /* KEY_Z 44 */ + SDL_SCANCODE_X, /* KEY_X 45 */ + SDL_SCANCODE_C, /* KEY_C 46 */ + SDL_SCANCODE_V, /* KEY_V 47 */ + SDL_SCANCODE_B, /* KEY_B 48 */ + SDL_SCANCODE_N, /* KEY_N 49 */ + SDL_SCANCODE_M, /* KEY_M 50 */ + SDL_SCANCODE_COMMA, /* KEY_COMMA 51 */ + SDL_SCANCODE_PERIOD, /* KEY_DOT 52 */ + SDL_SCANCODE_SLASH, /* KEY_SLASH 53 */ + SDL_SCANCODE_RSHIFT, /* KEY_RIGHTSHIFT 54 */ + SDL_SCANCODE_KP_MULTIPLY, /* KEY_KPASTERISK 55 */ + SDL_SCANCODE_LALT, /* KEY_LEFTALT 56 */ + SDL_SCANCODE_SPACE, /* KEY_SPACE 57 */ + SDL_SCANCODE_CAPSLOCK, /* KEY_CAPSLOCK 58 */ + SDL_SCANCODE_F1, /* KEY_F1 59 */ + SDL_SCANCODE_F2, /* KEY_F2 60 */ + SDL_SCANCODE_F3, /* KEY_F3 61 */ + SDL_SCANCODE_F4, /* KEY_F4 62 */ + SDL_SCANCODE_F5, /* KEY_F5 63 */ + SDL_SCANCODE_F6, /* KEY_F6 64 */ + SDL_SCANCODE_F7, /* KEY_F7 65 */ + SDL_SCANCODE_F8, /* KEY_F8 66 */ + SDL_SCANCODE_F9, /* KEY_F9 67 */ + SDL_SCANCODE_F10, /* KEY_F10 68 */ + SDL_SCANCODE_NUMLOCKCLEAR, /* KEY_NUMLOCK 69 */ + SDL_SCANCODE_SCROLLLOCK, /* KEY_SCROLLLOCK 70 */ + SDL_SCANCODE_KP_7, /* KEY_KP7 71 */ + SDL_SCANCODE_KP_8, /* KEY_KP8 72 */ + SDL_SCANCODE_KP_9, /* KEY_KP9 73 */ + SDL_SCANCODE_KP_MINUS, /* KEY_KPMINUS 74 */ + SDL_SCANCODE_KP_4, /* KEY_KP4 75 */ + SDL_SCANCODE_KP_5, /* KEY_KP5 76 */ + SDL_SCANCODE_KP_6, /* KEY_KP6 77 */ + SDL_SCANCODE_KP_PLUS, /* KEY_KPPLUS 78 */ + SDL_SCANCODE_KP_1, /* KEY_KP1 79 */ + SDL_SCANCODE_KP_2, /* KEY_KP2 80 */ + SDL_SCANCODE_KP_3, /* KEY_KP3 81 */ + SDL_SCANCODE_KP_0, /* KEY_KP0 82 */ + SDL_SCANCODE_KP_PERIOD, /* KEY_KPDOT 83 */ + SDL_SCANCODE_UNKNOWN, /* 84 */ + SDL_SCANCODE_LANG5, /* KEY_ZENKAKUHANKAKU 85 */ + SDL_SCANCODE_UNKNOWN, /* KEY_102ND 86 */ + SDL_SCANCODE_F11, /* KEY_F11 87 */ + SDL_SCANCODE_F12, /* KEY_F12 88 */ + SDL_SCANCODE_UNKNOWN, /* KEY_RO 89 */ + SDL_SCANCODE_LANG3, /* KEY_KATAKANA 90 */ + SDL_SCANCODE_LANG4, /* KEY_HIRAGANA 91 */ + SDL_SCANCODE_UNKNOWN, /* KEY_HENKAN 92 */ + SDL_SCANCODE_LANG3, /* KEY_KATAKANAHIRAGANA 93 */ + SDL_SCANCODE_UNKNOWN, /* KEY_MUHENKAN 94 */ + SDL_SCANCODE_KP_COMMA, /* KEY_KPJPCOMMA 95 */ + SDL_SCANCODE_KP_ENTER, /* KEY_KPENTER 96 */ + SDL_SCANCODE_RCTRL, /* KEY_RIGHTCTRL 97 */ + SDL_SCANCODE_KP_DIVIDE, /* KEY_KPSLASH 98 */ + SDL_SCANCODE_SYSREQ, /* KEY_SYSRQ 99 */ + SDL_SCANCODE_RALT, /* KEY_RIGHTALT 100 */ + SDL_SCANCODE_UNKNOWN, /* KEY_LINEFEED 101 */ + SDL_SCANCODE_HOME, /* KEY_HOME 102 */ + SDL_SCANCODE_UP, /* KEY_UP 103 */ + SDL_SCANCODE_PAGEUP, /* KEY_PAGEUP 104 */ + SDL_SCANCODE_LEFT, /* KEY_LEFT 105 */ + SDL_SCANCODE_RIGHT, /* KEY_RIGHT 106 */ + SDL_SCANCODE_END, /* KEY_END 107 */ + SDL_SCANCODE_DOWN, /* KEY_DOWN 108 */ + SDL_SCANCODE_PAGEDOWN, /* KEY_PAGEDOWN 109 */ + SDL_SCANCODE_INSERT, /* KEY_INSERT 110 */ + SDL_SCANCODE_DELETE, /* KEY_DELETE 111 */ + SDL_SCANCODE_UNKNOWN, /* KEY_MACRO 112 */ + SDL_SCANCODE_MUTE, /* KEY_MUTE 113 */ + SDL_SCANCODE_VOLUMEDOWN, /* KEY_VOLUMEDOWN 114 */ + SDL_SCANCODE_VOLUMEUP, /* KEY_VOLUMEUP 115 */ + SDL_SCANCODE_POWER, /* KEY_POWER 116 SC System Power Down */ + SDL_SCANCODE_KP_EQUALS, /* KEY_KPEQUAL 117 */ + SDL_SCANCODE_KP_MINUS, /* KEY_KPPLUSMINUS 118 */ + SDL_SCANCODE_PAUSE, /* KEY_PAUSE 119 */ + SDL_SCANCODE_UNKNOWN, /* KEY_SCALE 120 AL Compiz Scale (Expose) */ + SDL_SCANCODE_KP_COMMA, /* KEY_KPCOMMA 121 */ + SDL_SCANCODE_LANG1, /* KEY_HANGEUL,KEY_HANGUEL 122 */ + SDL_SCANCODE_LANG2, /* KEY_HANJA 123 */ + SDL_SCANCODE_INTERNATIONAL3,/* KEY_YEN 124 */ + SDL_SCANCODE_LGUI, /* KEY_LEFTMETA 125 */ + SDL_SCANCODE_RGUI, /* KEY_RIGHTMETA 126 */ + SDL_SCANCODE_APPLICATION, /* KEY_COMPOSE 127 */ + SDL_SCANCODE_STOP, /* KEY_STOP 128 AC Stop */ + SDL_SCANCODE_AGAIN, /* KEY_AGAIN 129 */ + SDL_SCANCODE_UNKNOWN, /* KEY_PROPS 130 AC Properties */ + SDL_SCANCODE_UNDO, /* KEY_UNDO 131 AC Undo */ + SDL_SCANCODE_UNKNOWN, /* KEY_FRONT 132 */ + SDL_SCANCODE_COPY, /* KEY_COPY 133 AC Copy */ + SDL_SCANCODE_UNKNOWN, /* KEY_OPEN 134 AC Open */ + SDL_SCANCODE_PASTE, /* KEY_PASTE 135 AC Paste */ + SDL_SCANCODE_FIND, /* KEY_FIND 136 AC Search */ + SDL_SCANCODE_CUT, /* KEY_CUT 137 AC Cut */ + SDL_SCANCODE_HELP, /* KEY_HELP 138 AL Integrated Help Center */ + SDL_SCANCODE_MENU, /* KEY_MENU 139 Menu (show menu) */ + SDL_SCANCODE_CALCULATOR, /* KEY_CALC 140 AL Calculator */ + SDL_SCANCODE_UNKNOWN, /* KEY_SETUP 141 */ + SDL_SCANCODE_SLEEP, /* KEY_SLEEP 142 SC System Sleep */ + SDL_SCANCODE_UNKNOWN, /* KEY_WAKEUP 143 System Wake Up */ + SDL_SCANCODE_UNKNOWN, /* KEY_FILE 144 AL Local Machine Browser */ + SDL_SCANCODE_UNKNOWN, /* KEY_SENDFILE 145 */ + SDL_SCANCODE_UNKNOWN, /* KEY_DELETEFILE 146 */ + SDL_SCANCODE_UNKNOWN, /* KEY_XFER 147 */ + SDL_SCANCODE_APP1, /* KEY_PROG1 148 */ + SDL_SCANCODE_APP1, /* KEY_PROG2 149 */ + SDL_SCANCODE_WWW, /* KEY_WWW 150 AL Internet Browser */ + SDL_SCANCODE_UNKNOWN, /* KEY_MSDOS 151 */ + SDL_SCANCODE_UNKNOWN, /* KEY_COFFEE,KEY_SCREENLOCK 152 AL Terminal Lock/Screensaver */ + SDL_SCANCODE_UNKNOWN, /* KEY_DIRECTION 153 */ + SDL_SCANCODE_UNKNOWN, /* KEY_CYCLEWINDOWS 154 */ + SDL_SCANCODE_MAIL, /* KEY_MAIL 155 */ + SDL_SCANCODE_AC_BOOKMARKS, /* KEY_BOOKMARKS 156 AC Bookmarks */ + SDL_SCANCODE_COMPUTER, /* KEY_COMPUTER 157 */ + SDL_SCANCODE_AC_BACK, /* KEY_BACK 158 AC Back */ + SDL_SCANCODE_AC_FORWARD, /* KEY_FORWARD 159 AC Forward */ + SDL_SCANCODE_UNKNOWN, /* KEY_CLOSECD 160 */ + SDL_SCANCODE_EJECT, /* KEY_EJECTCD 161 */ + SDL_SCANCODE_UNKNOWN, /* KEY_EJECTCLOSECD 162 */ + SDL_SCANCODE_AUDIONEXT, /* KEY_NEXTSONG 163 */ + SDL_SCANCODE_AUDIOPLAY, /* KEY_PLAYPAUSE 164 */ + SDL_SCANCODE_AUDIOPREV, /* KEY_PREVIOUSSONG 165 */ + SDL_SCANCODE_AUDIOSTOP, /* KEY_STOPCD 166 */ + SDL_SCANCODE_UNKNOWN, /* KEY_RECORD 167 */ + SDL_SCANCODE_UNKNOWN, /* KEY_REWIND 168 */ + SDL_SCANCODE_UNKNOWN, /* KEY_PHONE 169 Media Select Telephone */ + SDL_SCANCODE_UNKNOWN, /* KEY_ISO 170 */ + SDL_SCANCODE_UNKNOWN, /* KEY_CONFIG 171 AL Consumer Control Configuration */ + SDL_SCANCODE_AC_HOME, /* KEY_HOMEPAGE 172 AC Home */ + SDL_SCANCODE_AC_REFRESH, /* KEY_REFRESH 173 AC Refresh */ + SDL_SCANCODE_UNKNOWN, /* KEY_EXIT 174 AC Exit */ + SDL_SCANCODE_UNKNOWN, /* KEY_MOVE 175 */ + SDL_SCANCODE_UNKNOWN, /* KEY_EDIT 176 */ + SDL_SCANCODE_UNKNOWN, /* KEY_SCROLLUP 177 */ + SDL_SCANCODE_UNKNOWN, /* KEY_SCROLLDOWN 178 */ + SDL_SCANCODE_KP_LEFTPAREN, /* KEY_KPLEFTPAREN 179 */ + SDL_SCANCODE_KP_RIGHTPAREN, /* KEY_KPRIGHTPAREN 180 */ + SDL_SCANCODE_UNKNOWN, /* KEY_NEW 181 AC New */ + SDL_SCANCODE_AGAIN, /* KEY_REDO 182 AC Redo/Repeat */ + SDL_SCANCODE_F13, /* KEY_F13 183 */ + SDL_SCANCODE_F14, /* KEY_F14 184 */ + SDL_SCANCODE_F15, /* KEY_F15 185 */ + SDL_SCANCODE_F16, /* KEY_F16 186 */ + SDL_SCANCODE_F17, /* KEY_F17 187 */ + SDL_SCANCODE_F18, /* KEY_F18 188 */ + SDL_SCANCODE_F19, /* KEY_F19 189 */ + SDL_SCANCODE_F20, /* KEY_F20 190 */ + SDL_SCANCODE_F21, /* KEY_F21 191 */ + SDL_SCANCODE_F22, /* KEY_F22 192 */ + SDL_SCANCODE_F23, /* KEY_F23 193 */ + SDL_SCANCODE_F24, /* KEY_F24 194 */ + SDL_SCANCODE_UNKNOWN, /* 195 */ + SDL_SCANCODE_UNKNOWN, /* 196 */ + SDL_SCANCODE_UNKNOWN, /* 197 */ + SDL_SCANCODE_UNKNOWN, /* 198 */ + SDL_SCANCODE_UNKNOWN, /* 199 */ + SDL_SCANCODE_UNKNOWN, /* KEY_PLAYCD 200 */ + SDL_SCANCODE_UNKNOWN, /* KEY_PAUSECD 201 */ + SDL_SCANCODE_UNKNOWN, /* KEY_PROG3 202 */ + SDL_SCANCODE_UNKNOWN, /* KEY_PROG4 203 */ + SDL_SCANCODE_UNKNOWN, /* KEY_DASHBOARD 204 AL Dashboard */ + SDL_SCANCODE_UNKNOWN, /* KEY_SUSPEND 205 */ + SDL_SCANCODE_UNKNOWN, /* KEY_CLOSE 206 AC Close */ + SDL_SCANCODE_UNKNOWN, /* KEY_PLAY 207 */ + SDL_SCANCODE_UNKNOWN, /* KEY_FASTFORWARD 208 */ + SDL_SCANCODE_UNKNOWN, /* KEY_BASSBOOST 209 */ + SDL_SCANCODE_UNKNOWN, /* KEY_PRINT 210 AC Print */ + SDL_SCANCODE_UNKNOWN, /* KEY_HP 211 */ + SDL_SCANCODE_UNKNOWN, /* KEY_CAMERA 212 */ + SDL_SCANCODE_UNKNOWN, /* KEY_SOUND 213 */ + SDL_SCANCODE_UNKNOWN, /* KEY_QUESTION 214 */ + SDL_SCANCODE_UNKNOWN, /* KEY_EMAIL 215 */ + SDL_SCANCODE_UNKNOWN, /* KEY_CHAT 216 */ + SDL_SCANCODE_UNKNOWN, /* KEY_SEARCH 217 */ + SDL_SCANCODE_UNKNOWN, /* KEY_CONNECT 218 */ + SDL_SCANCODE_UNKNOWN, /* KEY_FINANCE 219 AL Checkbook/Finance */ + SDL_SCANCODE_UNKNOWN, /* KEY_SPORT 220 */ + SDL_SCANCODE_UNKNOWN, /* KEY_SHOP 221 */ + SDL_SCANCODE_UNKNOWN, /* KEY_ALTERASE 222 */ + SDL_SCANCODE_UNKNOWN, /* KEY_CANCEL 223 AC Cancel */ + SDL_SCANCODE_UNKNOWN, /* KEY_BRIGHTNESSDOWN 224 */ + SDL_SCANCODE_UNKNOWN, /* KEY_BRIGHTNESSUP 225 */ + SDL_SCANCODE_UNKNOWN, /* KEY_MEDIA 226 */ + SDL_SCANCODE_UNKNOWN, /* KEY_SWITCHVIDEOMODE 227 Cycle between available video outputs (Monitor/LCD/TV-out/etc) */ + SDL_SCANCODE_UNKNOWN, /* KEY_KBDILLUMTOGGLE 228 */ + SDL_SCANCODE_UNKNOWN, /* KEY_KBDILLUMDOWN 229 */ + SDL_SCANCODE_UNKNOWN, /* KEY_KBDILLUMUP 230 */ + SDL_SCANCODE_UNKNOWN, /* KEY_SEND 231 AC Send */ + SDL_SCANCODE_UNKNOWN, /* KEY_REPLY 232 AC Reply */ + SDL_SCANCODE_UNKNOWN, /* KEY_FORWARDMAIL 233 AC Forward Msg */ + SDL_SCANCODE_UNKNOWN, /* KEY_SAVE 234 AC Save */ + SDL_SCANCODE_UNKNOWN, /* KEY_DOCUMENTS 235 */ + SDL_SCANCODE_UNKNOWN, /* KEY_BATTERY 236 */ + SDL_SCANCODE_UNKNOWN, /* KEY_BLUETOOTH 237 */ + SDL_SCANCODE_UNKNOWN, /* KEY_WLAN 238 */ + SDL_SCANCODE_UNKNOWN, /* KEY_UWB 239 */ + SDL_SCANCODE_UNKNOWN, /* KEY_UNKNOWN 240 */ + SDL_SCANCODE_UNKNOWN, /* KEY_VIDEO_NEXT 241 drive next video source */ + SDL_SCANCODE_UNKNOWN, /* KEY_VIDEO_PREV 242 drive previous video source */ + SDL_SCANCODE_UNKNOWN, /* KEY_BRIGHTNESS_CYCLE 243 brightness up, after max is min */ + SDL_SCANCODE_UNKNOWN, /* KEY_BRIGHTNESS_ZERO 244 brightness off, use ambient */ + SDL_SCANCODE_UNKNOWN, /* KEY_DISPLAY_OFF 245 display device to off state */ + SDL_SCANCODE_UNKNOWN, /* KEY_WIMAX 246 */ + SDL_SCANCODE_UNKNOWN, /* KEY_RFKILL 247 Key that controls all radios */ + SDL_SCANCODE_UNKNOWN, /* KEY_MICMUTE 248 Mute / unmute the microphone */ +}; + +static Uint8 EVDEV_MouseButtons[] = { + SDL_BUTTON_LEFT, /* BTN_LEFT 0x110 */ + SDL_BUTTON_RIGHT, /* BTN_RIGHT 0x111 */ + SDL_BUTTON_MIDDLE, /* BTN_MIDDLE 0x112 */ + SDL_BUTTON_X1, /* BTN_SIDE 0x113 */ + SDL_BUTTON_X2, /* BTN_EXTRA 0x114 */ + SDL_BUTTON_X2 + 1, /* BTN_FORWARD 0x115 */ + SDL_BUTTON_X2 + 2, /* BTN_BACK 0x116 */ + SDL_BUTTON_X2 + 3 /* BTN_TASK 0x117 */ +}; + +static const char* EVDEV_consoles[] = { + "/proc/self/fd/0", + "/dev/tty", + "/dev/tty0", + "/dev/tty1", + "/dev/tty2", + "/dev/tty3", + "/dev/tty4", + "/dev/tty5", + "/dev/tty6", + "/dev/vc/0", + "/dev/console" +}; + +#define IS_CONSOLE(fd) isatty (fd) && ioctl(fd, KDGKBTYPE, &arg) == 0 && ((arg == KB_101) || (arg == KB_84)) + +static int SDL_EVDEV_get_console_fd(void) +{ + int fd, i; + char arg = 0; + + /* Try a few consoles to see which one we have read access to */ + + for(i = 0; i < SDL_arraysize(EVDEV_consoles); i++) { + fd = open(EVDEV_consoles[i], O_RDONLY); + if (fd >= 0) { + if (IS_CONSOLE(fd)) return fd; + close(fd); + } + } + + /* Try stdin, stdout, stderr */ + + for(fd = 0; fd < 3; fd++) { + if (IS_CONSOLE(fd)) return fd; + } + + /* We won't be able to send SDL_TEXTINPUT events */ + return -1; +} + +/* Prevent keystrokes from reaching the tty */ +static int SDL_EVDEV_mute_keyboard(int tty, int *kb_mode) +{ + char arg; + + *kb_mode = 0; /* FIXME: Is this a sane default in case KDGKBMODE fails? */ + if (!IS_CONSOLE(tty)) { + return SDL_SetError("Tried to mute an invalid tty"); + } + ioctl(tty, KDGKBMODE, kb_mode); /* It's not fatal if this fails */ + if (ioctl(tty, KDSKBMUTE, 1) && ioctl(tty, KDSKBMODE, K_OFF)) { + return SDL_SetError("EVDEV: Failed muting keyboard"); + } + + return 0; +} + +/* Restore the keyboard mode for given tty */ +static void SDL_EVDEV_unmute_keyboard(int tty, int kb_mode) +{ + if (ioctl(tty, KDSKBMUTE, 0) && ioctl(tty, KDSKBMODE, kb_mode)) { + SDL_Log("EVDEV: Failed restoring keyboard mode"); + } +} + +/* Read /sys/class/tty/tty0/active and open the tty */ +static int SDL_EVDEV_get_active_tty() +{ + int fd, len; + char ttyname[NAME_MAX + 1]; + char ttypath[PATH_MAX+1] = "/dev/"; + char arg; + + fd = open("/sys/class/tty/tty0/active", O_RDONLY); + if (fd < 0) { + return SDL_SetError("Could not determine which tty is active"); + } + + len = read(fd, ttyname, NAME_MAX); + close(fd); + + if (len <= 0) { + return SDL_SetError("Could not read which tty is active"); + } + + if (ttyname[len-1] == '\n') { + ttyname[len-1] = '\0'; + } + else { + ttyname[len] = '\0'; + } + + SDL_strlcat(ttypath, ttyname, PATH_MAX); + fd = open(ttypath, O_RDWR | O_NOCTTY); + if (fd < 0) { + return SDL_SetError("Could not open tty: %s", ttypath); + } + + if (!IS_CONSOLE(fd)) { + close(fd); + return SDL_SetError("Invalid tty obtained: %s", ttypath); + } + + return fd; +} + +int +SDL_EVDEV_Init(void) +{ + int retval = 0; + + if (_this == NULL) { + + _this = (SDL_EVDEV_PrivateData *) SDL_calloc(1, sizeof(*_this)); + if(_this == NULL) { + return SDL_OutOfMemory(); + } + +#if SDL_USE_LIBUDEV + if (SDL_UDEV_Init() < 0) { + SDL_free(_this); + _this = NULL; + return -1; + } + + /* Set up the udev callback */ + if (SDL_UDEV_AddCallback(SDL_EVDEV_udev_callback) < 0) { + SDL_EVDEV_Quit(); + return -1; + } + + /* Force a scan to build the initial device list */ + SDL_UDEV_Scan(); +#else + /* TODO: Scan the devices manually, like a caveman */ +#endif /* SDL_USE_LIBUDEV */ + + /* We need a physical terminal (not PTS) to be able to translate key code to symbols via the kernel tables */ + _this->console_fd = SDL_EVDEV_get_console_fd(); + + /* Mute the keyboard so keystrokes only generate evdev events and do not leak through to the console */ + _this->tty = STDIN_FILENO; + if (SDL_EVDEV_mute_keyboard(_this->tty, &_this->kb_mode) < 0) { + /* stdin is not a tty, probably we were launched remotely, so we try to disable the active tty */ + _this->tty = SDL_EVDEV_get_active_tty(); + if (_this->tty >= 0) { + if (SDL_EVDEV_mute_keyboard(_this->tty, &_this->kb_mode) < 0) { + close(_this->tty); + _this->tty = -1; + } + } + } + } + + _this->ref_count += 1; + + return retval; +} + +void +SDL_EVDEV_Quit(void) +{ + if (_this == NULL) { + return; + } + + _this->ref_count -= 1; + + if (_this->ref_count < 1) { + +#if SDL_USE_LIBUDEV + SDL_UDEV_DelCallback(SDL_EVDEV_udev_callback); + SDL_UDEV_Quit(); +#endif /* SDL_USE_LIBUDEV */ + + if (_this->console_fd >= 0) { + close(_this->console_fd); + } + + if (_this->tty >= 0) { + SDL_EVDEV_unmute_keyboard(_this->tty, _this->kb_mode); + close(_this->tty); + } + + /* Remove existing devices */ + while(_this->first != NULL) { + SDL_EVDEV_device_removed(_this->first->path); + } + + SDL_assert(_this->first == NULL); + SDL_assert(_this->last == NULL); + SDL_assert(_this->numdevices == 0); + + SDL_free(_this); + _this = NULL; + } +} + +#if SDL_USE_LIBUDEV +void SDL_EVDEV_udev_callback(SDL_UDEV_deviceevent udev_type, int udev_class, const char *devpath) +{ + if (devpath == NULL) { + return; + } + + switch(udev_type) { + case SDL_UDEV_DEVICEADDED: + if (!(udev_class & (SDL_UDEV_DEVICE_MOUSE|SDL_UDEV_DEVICE_KEYBOARD))) { + return; + } + SDL_EVDEV_device_added(devpath); + break; + + case SDL_UDEV_DEVICEREMOVED: + SDL_EVDEV_device_removed(devpath); + break; + + default: + break; + } +} + +#endif /* SDL_USE_LIBUDEV */ + +void +SDL_EVDEV_Poll(void) +{ + struct input_event events[32]; + int i, len; + SDL_evdevlist_item *item; + SDL_Scancode scan_code; + int mouse_button; + SDL_Mouse *mouse; +#ifdef SDL_INPUT_LINUXKD + Uint16 modstate; + struct kbentry kbe; + static char keysym[8]; + char *end; + Uint32 kval; +#endif + + if (!_this) { + return; + } + +#if SDL_USE_LIBUDEV + SDL_UDEV_Poll(); +#endif + + mouse = SDL_GetMouse(); + + for (item = _this->first; item != NULL; item = item->next) { + while ((len = read(item->fd, events, (sizeof events))) > 0) { + len /= sizeof(events[0]); + for (i = 0; i < len; ++i) { + switch (events[i].type) { + case EV_KEY: + if (events[i].code >= BTN_MOUSE && events[i].code < BTN_MOUSE + SDL_arraysize(EVDEV_MouseButtons)) { + mouse_button = events[i].code - BTN_MOUSE; + if (events[i].value == 0) { + SDL_SendMouseButton(mouse->focus, mouse->mouseID, SDL_RELEASED, EVDEV_MouseButtons[mouse_button]); + } else if (events[i].value == 1) { + SDL_SendMouseButton(mouse->focus, mouse->mouseID, SDL_PRESSED, EVDEV_MouseButtons[mouse_button]); + } + break; + } + + /* Probably keyboard */ + scan_code = SDL_EVDEV_translate_keycode(events[i].code); + if (scan_code != SDL_SCANCODE_UNKNOWN) { + if (events[i].value == 0) { + SDL_SendKeyboardKey(SDL_RELEASED, scan_code); + } else if (events[i].value == 1 || events[i].value == 2 /* Key repeated */) { + SDL_SendKeyboardKey(SDL_PRESSED, scan_code); +#ifdef SDL_INPUT_LINUXKD + if (_this->console_fd >= 0) { + kbe.kb_index = events[i].code; + /* Convert the key to an UTF-8 char */ + /* Ref: http://www.linuxjournal.com/article/2783 */ + modstate = SDL_GetModState(); + kbe.kb_table = 0; + + /* Ref: http://graphics.stanford.edu/~seander/bithacks.html#ConditionalSetOrClearBitsWithoutBranching */ + kbe.kb_table |= -((modstate & KMOD_LCTRL) != 0) & (1 << KG_CTRLL | 1 << KG_CTRL); + kbe.kb_table |= -((modstate & KMOD_RCTRL) != 0) & (1 << KG_CTRLR | 1 << KG_CTRL); + kbe.kb_table |= -((modstate & KMOD_LSHIFT) != 0) & (1 << KG_SHIFTL | 1 << KG_SHIFT); + kbe.kb_table |= -((modstate & KMOD_RSHIFT) != 0) & (1 << KG_SHIFTR | 1 << KG_SHIFT); + kbe.kb_table |= -((modstate & KMOD_LALT) != 0) & (1 << KG_ALT); + kbe.kb_table |= -((modstate & KMOD_RALT) != 0) & (1 << KG_ALTGR); + + if (ioctl(_this->console_fd, KDGKBENT, (unsigned long)&kbe) == 0 && + ((KTYP(kbe.kb_value) == KT_LATIN) || (KTYP(kbe.kb_value) == KT_ASCII) || (KTYP(kbe.kb_value) == KT_LETTER))) + { + kval = KVAL(kbe.kb_value); + + /* While there's a KG_CAPSSHIFT symbol, it's not useful to build the table index with it + * because 1 << KG_CAPSSHIFT overflows the 8 bits of kb_table + * So, we do the CAPS LOCK logic here. Note that isalpha depends on the locale! + */ + if (modstate & KMOD_CAPS && isalpha(kval)) { + if (isupper(kval)) { + kval = tolower(kval); + } else { + kval = toupper(kval); + } + } + + /* Convert to UTF-8 and send */ + end = SDL_UCS4ToUTF8(kval, keysym); + *end = '\0'; + SDL_SendKeyboardText(keysym); + } + } +#endif /* SDL_INPUT_LINUXKD */ + } + } + break; + case EV_ABS: + switch(events[i].code) { + case ABS_X: + SDL_SendMouseMotion(mouse->focus, mouse->mouseID, SDL_FALSE, events[i].value, mouse->y); + break; + case ABS_Y: + SDL_SendMouseMotion(mouse->focus, mouse->mouseID, SDL_FALSE, mouse->x, events[i].value); + break; + default: + break; + } + break; + case EV_REL: + switch(events[i].code) { + case REL_X: + SDL_SendMouseMotion(mouse->focus, mouse->mouseID, SDL_TRUE, events[i].value, 0); + break; + case REL_Y: + SDL_SendMouseMotion(mouse->focus, mouse->mouseID, SDL_TRUE, 0, events[i].value); + break; + case REL_WHEEL: + SDL_SendMouseWheel(mouse->focus, mouse->mouseID, 0, events[i].value, SDL_MOUSEWHEEL_NORMAL); + break; + case REL_HWHEEL: + SDL_SendMouseWheel(mouse->focus, mouse->mouseID, events[i].value, 0, SDL_MOUSEWHEEL_NORMAL); + break; + default: + break; + } + break; + case EV_SYN: + switch (events[i].code) { + case SYN_DROPPED: + SDL_EVDEV_sync_device(item); + break; + default: + break; + } + break; + } + } + } + } +} + +static SDL_Scancode +SDL_EVDEV_translate_keycode(int keycode) +{ + SDL_Scancode scancode = SDL_SCANCODE_UNKNOWN; + + if (keycode < SDL_arraysize(EVDEV_Keycodes)) { + scancode = EVDEV_Keycodes[keycode]; + } + if (scancode == SDL_SCANCODE_UNKNOWN) { + SDL_Log("The key you just pressed is not recognized by SDL. To help get this fixed, please report this to the SDL mailing list <sdl@libsdl.org> EVDEV KeyCode %d \n", keycode); + } + return scancode; +} + +static void +SDL_EVDEV_sync_device(SDL_evdevlist_item *item) +{ + /* TODO: get full state of device and report whatever is required */ +} + +#if SDL_USE_LIBUDEV +static int +SDL_EVDEV_device_added(const char *devpath) +{ + SDL_evdevlist_item *item; + + /* Check to make sure it's not already in list. */ + for (item = _this->first; item != NULL; item = item->next) { + if (SDL_strcmp(devpath, item->path) == 0) { + return -1; /* already have this one */ + } + } + + item = (SDL_evdevlist_item *) SDL_calloc(1, sizeof (SDL_evdevlist_item)); + if (item == NULL) { + return SDL_OutOfMemory(); + } + + item->fd = open(devpath, O_RDONLY, 0); + if (item->fd < 0) { + SDL_free(item); + return SDL_SetError("Unable to open %s", devpath); + } + + item->path = SDL_strdup(devpath); + if (item->path == NULL) { + close(item->fd); + SDL_free(item); + return SDL_OutOfMemory(); + } + + /* Non blocking read mode */ + fcntl(item->fd, F_SETFL, O_NONBLOCK); + + if (_this->last == NULL) { + _this->first = _this->last = item; + } else { + _this->last->next = item; + _this->last = item; + } + + SDL_EVDEV_sync_device(item); + + return _this->numdevices++; +} +#endif /* SDL_USE_LIBUDEV */ + +static int +SDL_EVDEV_device_removed(const char *devpath) +{ + SDL_evdevlist_item *item; + SDL_evdevlist_item *prev = NULL; + + for (item = _this->first; item != NULL; item = item->next) { + /* found it, remove it. */ + if (SDL_strcmp(devpath, item->path) == 0) { + if (prev != NULL) { + prev->next = item->next; + } else { + SDL_assert(_this->first == item); + _this->first = item->next; + } + if (item == _this->last) { + _this->last = prev; + } + close(item->fd); + SDL_free(item->path); + SDL_free(item); + _this->numdevices--; + return 0; + } + prev = item; + } + + return -1; +} + + +#endif /* SDL_INPUT_LINUXEV */ + +/* vi: set ts=4 sw=4 expandtab: */ + |