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- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <fcntl.h>
- #include <sys/ioctl.h>
- #include <unistd.h>
- #include <linux/input.h>
- #include <errno.h>
- #include "../common/input.h"
- #include "in_evdev.h"
- typedef struct {
- int fd;
- int *kbits;
- int abs_lzone;
- int abs_rzone;
- int abs_tzone;
- int abs_bzone;
- int abs_lastx;
- int abs_lasty;
- } in_evdev_t;
- #ifndef KEY_CNT
- #define KEY_CNT (KEY_MAX + 1)
- #endif
- #define KEYBITS_BIT(x) (keybits[(x)/sizeof(keybits[0])/8] & \
- (1 << ((x) & (sizeof(keybits[0])*8-1))))
- #define KEYBITS_BIT_SET(x) (keybits[(x)/sizeof(keybits[0])/8] |= \
- (1 << ((x) & (sizeof(keybits[0])*8-1))))
- #define KEYBITS_BIT_CLEAR(x) (keybits[(x)/sizeof(keybits[0])/8] &= \
- ~(1 << ((x) & (sizeof(keybits[0])*8-1))))
- static const char * const in_evdev_prefix = "evdev:";
- static const char * const in_evdev_keys[KEY_CNT] = {
- [0 ... KEY_MAX] = NULL,
- [KEY_RESERVED] = "Reserved", [KEY_ESC] = "Esc",
- [KEY_1] = "1", [KEY_2] = "2",
- [KEY_3] = "3", [KEY_4] = "4",
- [KEY_5] = "5", [KEY_6] = "6",
- [KEY_7] = "7", [KEY_8] = "8",
- [KEY_9] = "9", [KEY_0] = "0",
- [KEY_MINUS] = "Minus", [KEY_EQUAL] = "Equal",
- [KEY_BACKSPACE] = "Backspace", [KEY_TAB] = "Tab",
- [KEY_Q] = "Q", [KEY_W] = "W",
- [KEY_E] = "E", [KEY_R] = "R",
- [KEY_T] = "T", [KEY_Y] = "Y",
- [KEY_U] = "U", [KEY_I] = "I",
- [KEY_O] = "O", [KEY_P] = "P",
- [KEY_LEFTBRACE] = "LeftBrace", [KEY_RIGHTBRACE] = "RightBrace",
- [KEY_ENTER] = "Enter", [KEY_LEFTCTRL] = "LeftControl",
- [KEY_A] = "A", [KEY_S] = "S",
- [KEY_D] = "D", [KEY_F] = "F",
- [KEY_G] = "G", [KEY_H] = "H",
- [KEY_J] = "J", [KEY_K] = "K",
- [KEY_L] = "L", [KEY_SEMICOLON] = "Semicolon",
- [KEY_APOSTROPHE] = "Apostrophe", [KEY_GRAVE] = "Grave",
- [KEY_LEFTSHIFT] = "LeftShift", [KEY_BACKSLASH] = "BackSlash",
- [KEY_Z] = "Z", [KEY_X] = "X",
- [KEY_C] = "C", [KEY_V] = "V",
- [KEY_B] = "B", [KEY_N] = "N",
- [KEY_M] = "M", [KEY_COMMA] = "Comma",
- [KEY_DOT] = "Dot", [KEY_SLASH] = "Slash",
- [KEY_RIGHTSHIFT] = "RightShift", [KEY_KPASTERISK] = "KPAsterisk",
- [KEY_LEFTALT] = "LeftAlt", [KEY_SPACE] = "Space",
- [KEY_CAPSLOCK] = "CapsLock", [KEY_F1] = "F1",
- [KEY_F2] = "F2", [KEY_F3] = "F3",
- [KEY_F4] = "F4", [KEY_F5] = "F5",
- [KEY_F6] = "F6", [KEY_F7] = "F7",
- [KEY_F8] = "F8", [KEY_F9] = "F9",
- [KEY_F10] = "F10", [KEY_NUMLOCK] = "NumLock",
- [KEY_SCROLLLOCK] = "ScrollLock", [KEY_KP7] = "KP7",
- [KEY_KP8] = "KP8", [KEY_KP9] = "KP9",
- [KEY_KPMINUS] = "KPMinus", [KEY_KP4] = "KP4",
- [KEY_KP5] = "KP5", [KEY_KP6] = "KP6",
- [KEY_KPPLUS] = "KPPlus", [KEY_KP1] = "KP1",
- [KEY_KP2] = "KP2", [KEY_KP3] = "KP3",
- [KEY_KP0] = "KP0", [KEY_KPDOT] = "KPDot",
- [KEY_ZENKAKUHANKAKU] = "Zenkaku/Hankaku", [KEY_102ND] = "102nd",
- [KEY_F11] = "F11", [KEY_F12] = "F12",
- [KEY_KPJPCOMMA] = "KPJpComma", [KEY_KPENTER] = "KPEnter",
- [KEY_RIGHTCTRL] = "RightCtrl", [KEY_KPSLASH] = "KPSlash",
- [KEY_SYSRQ] = "SysRq", [KEY_RIGHTALT] = "RightAlt",
- [KEY_LINEFEED] = "LineFeed", [KEY_HOME] = "Home",
- [KEY_UP] = "Up", [KEY_PAGEUP] = "PageUp",
- [KEY_LEFT] = "Left", [KEY_RIGHT] = "Right",
- [KEY_END] = "End", [KEY_DOWN] = "Down",
- [KEY_PAGEDOWN] = "PageDown", [KEY_INSERT] = "Insert",
- [KEY_DELETE] = "Delete", [KEY_MACRO] = "Macro",
- [KEY_HELP] = "Help", [KEY_MENU] = "Menu",
- [KEY_COFFEE] = "Coffee", [KEY_DIRECTION] = "Direction",
- [BTN_0] = "Btn0", [BTN_1] = "Btn1",
- [BTN_2] = "Btn2", [BTN_3] = "Btn3",
- [BTN_4] = "Btn4", [BTN_5] = "Btn5",
- [BTN_6] = "Btn6", [BTN_7] = "Btn7",
- [BTN_8] = "Btn8", [BTN_9] = "Btn9",
- [BTN_LEFT] = "LeftBtn", [BTN_RIGHT] = "RightBtn",
- [BTN_MIDDLE] = "MiddleBtn", [BTN_SIDE] = "SideBtn",
- [BTN_EXTRA] = "ExtraBtn", [BTN_FORWARD] = "ForwardBtn",
- [BTN_BACK] = "BackBtn", [BTN_TASK] = "TaskBtn",
- [BTN_TRIGGER] = "Trigger", [BTN_THUMB] = "ThumbBtn",
- [BTN_THUMB2] = "ThumbBtn2", [BTN_TOP] = "TopBtn",
- [BTN_TOP2] = "TopBtn2", [BTN_PINKIE] = "PinkieBtn",
- [BTN_BASE] = "BaseBtn", [BTN_BASE2] = "BaseBtn2",
- [BTN_BASE3] = "BaseBtn3", [BTN_BASE4] = "BaseBtn4",
- [BTN_BASE5] = "BaseBtn5", [BTN_BASE6] = "BaseBtn6",
- [BTN_DEAD] = "BtnDead", [BTN_A] = "BtnA",
- [BTN_B] = "BtnB", [BTN_C] = "BtnC",
- [BTN_X] = "BtnX", [BTN_Y] = "BtnY",
- [BTN_Z] = "BtnZ", [BTN_TL] = "BtnTL",
- [BTN_TR] = "BtnTR", [BTN_TL2] = "BtnTL2",
- [BTN_TR2] = "BtnTR2", [BTN_SELECT] = "BtnSelect",
- [BTN_START] = "BtnStart", [BTN_MODE] = "BtnMode",
- [BTN_THUMBL] = "BtnThumbL", [BTN_THUMBR] = "BtnThumbR",
- [BTN_TOUCH] = "Touch", [BTN_STYLUS] = "Stylus",
- [BTN_STYLUS2] = "Stylus2", [BTN_TOOL_DOUBLETAP] = "Tool Doubletap",
- [BTN_TOOL_TRIPLETAP] = "Tool Tripletap", [BTN_GEAR_DOWN] = "WheelBtn",
- [BTN_GEAR_UP] = "Gear up", [KEY_OK] = "Ok",
- };
- static void in_evdev_probe(void)
- {
- long keybits[KEY_CNT / sizeof(long) / 8];
- long absbits[(ABS_MAX+1) / sizeof(long) / 8];
- int i;
- // the kernel might support and return less keys then we know about,
- // so make sure the buffers are clear.
- memset(keybits, 0, sizeof(keybits));
- memset(absbits, 0, sizeof(absbits));
- for (i = 0;; i++)
- {
- int support = 0, count = 0;
- in_evdev_t *dev;
- int u, ret, fd;
- char name[64];
- snprintf(name, sizeof(name), "/dev/input/event%d", i);
- fd = open(name, O_RDONLY|O_NONBLOCK);
- if (fd == -1) {
- if (errno == EACCES)
- continue; /* maybe we can access next one */
- break;
- }
- /* check supported events */
- ret = ioctl(fd, EVIOCGBIT(0, sizeof(support)), &support);
- if (ret == -1) {
- printf("in_evdev: ioctl failed on %s\n", name);
- goto skip;
- }
- if (!(support & (1 << EV_KEY)))
- goto skip;
- ret = ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
- if (ret == -1) {
- printf("in_evdev: ioctl failed on %s\n", name);
- goto skip;
- }
- /* check for interesting keys */
- for (u = 0; u < KEY_CNT; u++) {
- if (KEYBITS_BIT(u) && u != KEY_POWER &&
- u != KEY_SLEEP && u != BTN_TOUCH)
- count++;
- }
- if (count == 0)
- goto skip;
- dev = calloc(1, sizeof(*dev));
- if (dev == NULL)
- goto skip;
- ret = ioctl(fd, EVIOCGKEY(sizeof(keybits)), keybits);
- if (ret == -1) {
- printf("Warning: EVIOCGKEY not supported, will have to track state\n");
- dev->kbits = calloc(KEY_CNT, sizeof(int));
- if (dev->kbits == NULL) {
- free(dev);
- goto skip;
- }
- }
- /* check for abs too */
- if (support & (1 << EV_ABS)) {
- struct input_absinfo ainfo;
- int dist;
- ret = ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbits)), absbits);
- if (ret == -1)
- goto no_abs;
- if (absbits[0] & (1 << ABS_X)) {
- ret = ioctl(fd, EVIOCGABS(ABS_X), &ainfo);
- if (ret == -1)
- goto no_abs;
- dist = ainfo.maximum - ainfo.minimum;
- dev->abs_lzone = ainfo.minimum + dist / 4;
- dev->abs_rzone = ainfo.maximum - dist / 4;
- }
- if (absbits[0] & (1 << ABS_Y)) {
- ret = ioctl(fd, EVIOCGABS(ABS_Y), &ainfo);
- if (ret == -1)
- goto no_abs;
- dist = ainfo.maximum - ainfo.minimum;
- dev->abs_tzone = ainfo.minimum + dist / 4;
- dev->abs_bzone = ainfo.maximum - dist / 4;
- }
- }
- no_abs:
- dev->fd = fd;
- strcpy(name, in_evdev_prefix);
- ioctl(fd, EVIOCGNAME(sizeof(name)-6), name+6);
- printf("in_evdev: found \"%s\" with %d events (type %08x)\n",
- name+6, count, support);
- in_register(name, IN_DRVID_EVDEV, fd, dev, KEY_CNT, 0);
- continue;
- skip:
- close(fd);
- }
- }
- static void in_evdev_free(void *drv_data)
- {
- in_evdev_t *dev = drv_data;
- if (dev == NULL)
- return;
- close(dev->fd);
- free(dev);
- }
- static int in_evdev_get_bind_count(void)
- {
- return KEY_CNT;
- }
- static void or_binds(const int *binds, int key, int *result)
- {
- int t;
- for (t = 0; t < IN_BINDTYPE_COUNT; t++)
- result[t] |= binds[IN_BIND_OFFS(key, t)];
- }
- /* ORs result with binds of pressed buttons
- * XXX: should measure performance hit of this func, might need to optimize */
- int in_evdev_update(void *drv_data, const int *binds, int *result)
- {
- struct input_event ev[16];
- struct input_absinfo ainfo;
- int keybits_[KEY_CNT / sizeof(int)];
- int *keybits = keybits_;
- in_evdev_t *dev = drv_data;
- int rd, ret, u;
- if (dev->kbits == NULL) {
- ret = ioctl(dev->fd, EVIOCGKEY(sizeof(keybits_)), keybits_);
- if (ret == -1) {
- perror("in_evdev: ioctl failed");
- return -1;
- }
- }
- else {
- keybits = dev->kbits;
- while (1) {
- rd = read(dev->fd, ev, sizeof(ev));
- if (rd < (int)sizeof(ev[0])) {
- if (errno != EAGAIN)
- perror("in_evdev: read failed");
- break;
- }
- for (u = 0; u < rd / sizeof(ev[0]); u++) {
- if (ev[u].type != EV_KEY)
- continue;
- else if (ev[u].value == 1)
- KEYBITS_BIT_SET(ev[u].code);
- else if (ev[u].value == 0)
- KEYBITS_BIT_CLEAR(ev[u].code);
- }
- }
- }
- for (u = 0; u < KEY_CNT; u++) {
- if (KEYBITS_BIT(u))
- or_binds(binds, u, result);
- }
- /* map X and Y absolute to UDLR */
- if (dev->abs_lzone != 0) {
- ret = ioctl(dev->fd, EVIOCGABS(ABS_X), &ainfo);
- if (ret != -1) {
- if (ainfo.value < dev->abs_lzone) or_binds(binds, KEY_LEFT, result);
- if (ainfo.value > dev->abs_rzone) or_binds(binds, KEY_RIGHT, result);
- }
- }
- if (dev->abs_tzone != 0) {
- ret = ioctl(dev->fd, EVIOCGABS(ABS_Y), &ainfo);
- if (ret != -1) {
- if (ainfo.value < dev->abs_tzone) or_binds(binds, KEY_UP, result);
- if (ainfo.value > dev->abs_bzone) or_binds(binds, KEY_DOWN, result);
- }
- }
- return 0;
- }
- static void in_evdev_set_blocking(void *drv_data, int y)
- {
- in_evdev_t *dev = drv_data;
- long flags;
- int ret;
- flags = (long)fcntl(dev->fd, F_GETFL);
- if ((int)flags == -1) {
- perror("in_evdev: F_GETFL fcntl failed");
- return;
- }
- if (flags & O_NONBLOCK) {
- /* flush the event queue */
- struct input_event ev;
- do {
- ret = read(dev->fd, &ev, sizeof(ev));
- }
- while (ret == sizeof(ev));
- }
- if (y)
- flags &= ~O_NONBLOCK;
- else
- flags |= O_NONBLOCK;
- ret = fcntl(dev->fd, F_SETFL, flags);
- if (ret == -1)
- perror("in_evdev: F_SETFL fcntl failed");
- }
- static int in_evdev_update_keycode(void *data, int *is_down)
- {
- in_evdev_t *dev = data;
- struct input_event ev;
- int rd;
- if (is_down != NULL)
- *is_down = 0;
- rd = read(dev->fd, &ev, sizeof(ev));
- if (rd < (int) sizeof(ev)) {
- if (errno != EAGAIN) {
- perror("in_evdev: error reading");
- sleep(1);
- }
- return -1;
- }
- if (ev.type == EV_KEY) {
- if (ev.value < 0 || ev.value > 1)
- return -1;
- if (is_down != NULL)
- *is_down = ev.value;
- return ev.code;
- }
- else if (ev.type == EV_ABS)
- {
- int down = 0;
- if (dev->abs_lzone != 0 && ev.code == ABS_X) {
- if (ev.value < dev->abs_lzone) {
- down = 1;
- dev->abs_lastx = KEY_LEFT;
- }
- else if (ev.value > dev->abs_rzone) {
- down = 1;
- dev->abs_lastx = KEY_RIGHT;
- }
- if (is_down != NULL)
- *is_down = down;
- return dev->abs_lastx;
- }
- if (dev->abs_tzone != 0 && ev.code == ABS_Y) {
- if (ev.value < dev->abs_tzone) {
- down = 1;
- dev->abs_lasty = KEY_UP;
- }
- else if (ev.value > dev->abs_bzone) {
- down = 1;
- dev->abs_lasty = KEY_DOWN;
- }
- if (is_down != NULL)
- *is_down = down;
- return dev->abs_lasty;
- }
- }
- return -1;
- }
- static const struct {
- short key;
- short pbtn;
- } key_pbtn_map[] =
- {
- { KEY_UP, PBTN_UP },
- { KEY_DOWN, PBTN_DOWN },
- { KEY_LEFT, PBTN_LEFT },
- { KEY_RIGHT, PBTN_RIGHT },
- { KEY_ENTER, PBTN_MOK },
- { KEY_END, PBTN_MOK },
- { BTN_TRIGGER, PBTN_MOK },
- { KEY_ESC, PBTN_MBACK },
- { KEY_PAGEDOWN, PBTN_MBACK },
- { BTN_THUMB, PBTN_MBACK },
- { KEY_A, PBTN_MA2 },
- { KEY_HOME, PBTN_MA2 },
- { KEY_S, PBTN_MA3 },
- { KEY_PAGEUP, PBTN_MA3 },
- { KEY_BACKSLASH, PBTN_MENU },
- { KEY_LEFTCTRL, PBTN_MENU },
- { KEY_RIGHTSHIFT, PBTN_L },
- { KEY_LEFTBRACE, PBTN_L },
- { KEY_RIGHTCTRL, PBTN_R },
- { KEY_RIGHTBRACE, PBTN_R },
- };
- #define KEY_PBTN_MAP_SIZE (sizeof(key_pbtn_map) / sizeof(key_pbtn_map[0]))
- static int in_evdev_menu_translate(int keycode)
- {
- int i;
- if (keycode < 0)
- {
- /* menu -> kc */
- keycode = -keycode;
- for (i = 0; i < KEY_PBTN_MAP_SIZE; i++)
- if (key_pbtn_map[i].pbtn == keycode)
- return key_pbtn_map[i].key;
- }
- else
- {
- for (i = 0; i < KEY_PBTN_MAP_SIZE; i++)
- if (key_pbtn_map[i].key == keycode)
- return key_pbtn_map[i].pbtn;
- }
- return 0;
- }
- static int in_evdev_get_key_code(const char *key_name)
- {
- int i;
- for (i = 0; i < KEY_CNT; i++) {
- const char *k = in_evdev_keys[i];
- if (k != NULL && strcasecmp(k, key_name) == 0)
- return i;
- }
- return -1;
- }
- static const char *in_evdev_get_key_name(int keycode)
- {
- const char *name = NULL;
- if (keycode >= 0 && keycode <= KEY_MAX)
- name = in_evdev_keys[keycode];
- if (name == NULL)
- name = "Unkn";
-
- return name;
- }
- static const struct {
- short code;
- char btype;
- char bit;
- } in_evdev_def_binds[] =
- {
- /* MXYZ SACB RLDU */
- { KEY_UP, IN_BINDTYPE_PLAYER12, 0 },
- { KEY_DOWN, IN_BINDTYPE_PLAYER12, 1 },
- { KEY_LEFT, IN_BINDTYPE_PLAYER12, 2 },
- { KEY_RIGHT, IN_BINDTYPE_PLAYER12, 3 },
- { KEY_S, IN_BINDTYPE_PLAYER12, 4 }, /* B */
- { KEY_PAGEDOWN, IN_BINDTYPE_PLAYER12, 4 },
- { KEY_D, IN_BINDTYPE_PLAYER12, 5 }, /* C */
- { KEY_END, IN_BINDTYPE_PLAYER12, 5 },
- { KEY_A, IN_BINDTYPE_PLAYER12, 6 }, /* A */
- { KEY_HOME, IN_BINDTYPE_PLAYER12, 6 },
- { KEY_ENTER, IN_BINDTYPE_PLAYER12, 7 },
- { KEY_LEFTALT, IN_BINDTYPE_PLAYER12, 7 },
- { KEY_RIGHTSHIFT,IN_BINDTYPE_EMU, PEVB_STATE_SAVE },
- { KEY_RIGHTCTRL, IN_BINDTYPE_EMU, PEVB_STATE_LOAD },
- { KEY_LEFTCTRL, IN_BINDTYPE_EMU, PEVB_MENU },
- };
- #define DEF_BIND_COUNT (sizeof(in_evdev_def_binds) / sizeof(in_evdev_def_binds[0]))
- static void in_evdev_get_def_binds(int *binds)
- {
- int i;
- for (i = 0; i < DEF_BIND_COUNT; i++)
- binds[IN_BIND_OFFS(in_evdev_def_binds[i].code, in_evdev_def_binds[i].btype)] =
- 1 << in_evdev_def_binds[i].bit;
- }
- /* remove binds of missing keys, count remaining ones */
- static int in_evdev_clean_binds(void *drv_data, int *binds, int *def_binds)
- {
- int keybits[KEY_CNT / sizeof(int)];
- in_evdev_t *dev = drv_data;
- int i, t, ret, offs, count = 0;
- ret = ioctl(dev->fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
- if (ret == -1) {
- perror("in_evdev: ioctl failed");
- memset(keybits, 0xff, sizeof(keybits)); /* mark all as good */
- }
- if (dev->abs_lzone != 0) {
- KEYBITS_BIT_SET(KEY_LEFT);
- KEYBITS_BIT_SET(KEY_RIGHT);
- }
- if (dev->abs_tzone != 0) {
- KEYBITS_BIT_SET(KEY_UP);
- KEYBITS_BIT_SET(KEY_DOWN);
- }
- for (i = 0; i < KEY_CNT; i++) {
- for (t = 0; t < IN_BINDTYPE_COUNT; t++) {
- offs = IN_BIND_OFFS(i, t);
- if (!KEYBITS_BIT(i))
- binds[offs] = def_binds[offs] = 0;
- if (binds[offs])
- count++;
- }
- }
- return count;
- }
- void in_evdev_init(void *vdrv)
- {
- in_drv_t *drv = vdrv;
- drv->prefix = in_evdev_prefix;
- drv->probe = in_evdev_probe;
- drv->free = in_evdev_free;
- drv->get_bind_count = in_evdev_get_bind_count;
- drv->get_def_binds = in_evdev_get_def_binds;
- drv->clean_binds = in_evdev_clean_binds;
- drv->set_blocking = in_evdev_set_blocking;
- drv->update_keycode = in_evdev_update_keycode;
- drv->menu_translate = in_evdev_menu_translate;
- drv->get_key_code = in_evdev_get_key_code;
- drv->get_key_name = in_evdev_get_key_name;
- }
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