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-rw-r--r--main.c153
1 files changed, 112 insertions, 41 deletions
diff --git a/main.c b/main.c
index 26e330a..f0633f6 100644
--- a/main.c
+++ b/main.c
@@ -76,10 +76,11 @@ enum keys_mask {
struct state {
uint32_t keys; // keys_mask
+ bool keyboard_mode;
};
#define MAPPINGS_NUM 105
-struct mapping g_mapping[MAPPINGS_NUM] = {
+static struct mapping g_mapping[MAPPINGS_NUM] = {
/* Right single */
{ .first = SIDE_RIGHT, .keys = KMASK_WEST, .code = KEY_BACKSPACE },
{ .first = SIDE_RIGHT, .keys = KMASK_SOUTH, .code = KEY_ENTER },
@@ -178,19 +179,40 @@ struct mapping g_mapping[MAPPINGS_NUM] = {
{ .first = SIDE_NO, .keys = 0, .code = KEY_DOWN },
};
-bool should_stop = false;
-int ifd = -1;
+static bool g_should_stop = false;
+static int g_ifd = -1;
+struct state g_state = {0};
+
+static void grab(int ifd)
+{
+ int ret = ioctl(ifd, EVIOCGRAB, (void *)1);
+ int err = errno;
+ if (ret != 0) {
+ fprintf(stderr, "Grab failed: ioctl(ifd, EVIOCGRAB, 1), err=%d: %s", err, strerror(err));
+ exit(1);
+ }
+}
+
+static void ungrab(int ifd)
+{
+ int ret = ioctl(ifd, EVIOCGRAB, (void *)0);
+ int err = errno;
+ if (ret != 0) {
+ fprintf(stderr, "Ungrab failed: ioctl(ifd, EVIOCGRAB, 0), err=%d: %s", err, strerror(err));
+ exit(1);
+ }
+}
static void sigint_handler(int _value)
{
(void) _value;
- should_stop = true;
+ g_should_stop = true;
printf("Received SIGINT, quitting...\n");
- {
- int ret = ioctl(ifd, EVIOCGRAB, (void *)0);
+ if (g_state.keyboard_mode) {
+ int ret = ioctl(g_ifd, EVIOCGRAB, (void *)0);
if (ret != 0) {
fprintf(stderr, "Ungrab failed: ");
- perror("ioctl(ifd, EVIOCGRAB, 0)");
+ perror("ioctl(g_ifd, EVIOCGRAB, 0)");
exit(1);
}
}
@@ -289,8 +311,42 @@ static enum side which_side_state(struct state state)
return (state.keys >> KMASK_SIDE_SHIFT) & 3;
}
+static struct state release_all(int ofd, struct state state)
+{
+ if (state.keys & KMASK_LT) {
+ emulate_key_release(ofd, KEY_LEFTCTRL);
+ }
+ if (state.keys & KMASK_RT) {
+ emulate_key_release(ofd, KEY_LEFTSHIFT);
+ }
+ if (state.keys & KMASK_LB) {
+ emulate_key_release(ofd, KEY_LEFTMETA);
+ }
+ if (state.keys & KMASK_RB) {
+ emulate_key_release(ofd, KEY_LEFTALT);
+ }
+ if (state.keys & KMASK_THUMBL_LEFT)
+ emulate_key_release(ofd, KEY_LEFT);
+ else if (state.keys & KMASK_THUMBL_RIGHT)
+ emulate_key_release(ofd, KEY_RIGHT);
+ if (state.keys & KMASK_THUMBL_UP)
+ emulate_key_release(ofd, KEY_UP);
+ else if (state.keys & KMASK_THUMBL_DOWN)
+ emulate_key_release(ofd, KEY_DOWN);
+ state.keys = 0;
+ return state;
+}
+
static struct state keypress(struct state state, struct input_event ev, int ofd)
{
+ if (state.keyboard_mode == false) {
+ if (ev.type == EV_KEY && ev.code == BTN_MODE) {
+ state.keyboard_mode = true;
+ grab(g_ifd);
+ printf("Keyboard mode on\n");
+ }
+ return state;
+ }
printf("<- %s, code=%u, value=%d\n", ev.type == EV_KEY ? "EV_KEY" : "EV_ABS", ev.code, ev.value);
if (which_side_state(state) == SIDE_NO) {
const enum side side = which_side_key(ev);
@@ -317,23 +373,31 @@ static struct state keypress(struct state state, struct input_event ev, int ofd)
break;
case BTN_TL2:
// Control
- state.keys |= KMASK_LT;
- emulate_key_press(ofd, KEY_LEFTCTRL);
+ if (state.keyboard_mode) {
+ state.keys |= KMASK_LT;
+ emulate_key_press(ofd, KEY_LEFTCTRL);
+ }
break;
case BTN_TR2:
// Shift
- state.keys |= KMASK_RT;
- emulate_key_press(ofd, KEY_LEFTSHIFT);
+ if (state.keyboard_mode) {
+ state.keys |= KMASK_RT;
+ emulate_key_press(ofd, KEY_LEFTSHIFT);
+ }
break;
case BTN_TL:
// Super
- state.keys |= KMASK_LB;
- emulate_key_press(ofd, KEY_LEFTMETA);
+ if (state.keyboard_mode) {
+ state.keys |= KMASK_LB;
+ emulate_key_press(ofd, KEY_LEFTMETA);
+ }
break;
case BTN_TR:
// Alt
- state.keys |= KMASK_RB;
- emulate_key_press(ofd, KEY_LEFTALT);
+ if (state.keyboard_mode) {
+ state.keys |= KMASK_RB;
+ emulate_key_press(ofd, KEY_LEFTALT);
+ }
break;
case BTN_SELECT:
state.keys |= KMASK_SHARE;
@@ -342,10 +406,13 @@ static struct state keypress(struct state state, struct input_event ev, int ofd)
state.keys |= KMASK_OPTIONS;
break;
case BTN_MODE:
- state.keys |= KMASK_PS;
+ state.keyboard_mode = false;
+ state = release_all(ofd, state);
+ ungrab(g_ifd);
+ printf("Keyboard mode off\n");
break;
};
- } else if (ev.type == EV_ABS) {
+ } else if (state.keyboard_mode && ev.type == EV_ABS) {
/*
* d-pad is EV_ABS
* left-right: code ABS_HAT0X, left=-1, right=1
@@ -402,6 +469,9 @@ static struct state keypress(struct state state, struct input_event ev, int ofd)
static struct state keyrelease(struct state state, struct input_event ev, int ofd)
{
+ if (state.keyboard_mode == false) {
+ return state;
+ }
printf("<- %s, code=%u, value=%d\n", ev.type == EV_KEY ? "EV_KEY" : "EV_ABS", ev.code, ev.value);
if (state.keys & KMASK_PRESSED) {
for (ssize_t i = 0; i < MAPPINGS_NUM; i++) {
@@ -432,23 +502,31 @@ static struct state keyrelease(struct state state, struct input_event ev, int of
break;
case BTN_TL2:
// Control
+ if (state.keys & KMASK_LT) {
+ emulate_key_release(ofd, KEY_LEFTCTRL);
+ }
state.keys &= ~KMASK_LT;
- emulate_key_release(ofd, KEY_LEFTCTRL);
break;
case BTN_TR2:
// Shift
+ if (state.keys & KMASK_RT) {
+ emulate_key_release(ofd, KEY_LEFTSHIFT);
+ }
state.keys &= ~KMASK_RT;
- emulate_key_release(ofd, KEY_LEFTSHIFT);
break;
case BTN_TL:
// Super
+ if (state.keys & KMASK_LB) {
+ emulate_key_release(ofd, KEY_LEFTMETA);
+ }
state.keys &= ~KMASK_LB;
- emulate_key_release(ofd, KEY_LEFTMETA);
break;
case BTN_TR:
// Alt
+ if (state.keys & KMASK_RB) {
+ emulate_key_release(ofd, KEY_LEFTALT);
+ }
state.keys &= ~KMASK_RB;
- emulate_key_release(ofd, KEY_LEFTALT);
break;
case BTN_SELECT:
state.keys &= ~KMASK_SHARE;
@@ -456,6 +534,8 @@ static struct state keyrelease(struct state state, struct input_event ev, int of
case BTN_START:
state.keys &= ~KMASK_OPTIONS;
break;
+ case BTN_MODE:
+ break;
};
} else if (ev.type == EV_ABS) {
/*
@@ -500,20 +580,12 @@ int main(int argc, char *argv[])
exit(1);
}
const char *input_path = argv[1];
- ifd = open(input_path, O_RDONLY);
- if (ifd == -1) {
+ g_ifd = open(input_path, O_RDONLY);
+ if (g_ifd == -1) {
fprintf(stderr, "\"%s\": ", input_path);
perror("open");
exit(1);
}
- {
- int ret = ioctl(ifd, EVIOCGRAB, (void *)1);
- if (ret != 0) {
- fprintf(stderr, "Grab failed: ");
- perror("ioctl(ifd, EVIOCGRAB, 1)");
- exit(1);
- }
- }
int ofd = open("/dev/uinput", O_WRONLY);
if (ofd == -1) {
fprintf(stderr, "\"/dev/uinput\": ");
@@ -524,12 +596,11 @@ int main(int argc, char *argv[])
setup_output_device(ofd);
- struct state state = {0};
int8_t abs_previous[ABS_CNT] = {0};
- while (!should_stop) {
+ while (!g_should_stop) {
struct input_event ev;
- ssize_t ret = read(ifd, &ev, sizeof(ev));
+ ssize_t ret = read(g_ifd, &ev, sizeof(ev));
if (ret == -1) {
perror("read");
exit(1);
@@ -537,9 +608,9 @@ int main(int argc, char *argv[])
switch (ev.type) {
case EV_KEY:
if (ev.value == 1) {
- state = keypress(state, ev, ofd);
+ g_state = keypress(g_state, ev, ofd);
} else if (ev.value == 0) {
- state = keyrelease(state, ev, ofd);
+ g_state = keyrelease(g_state, ev, ofd);
}
break;
case EV_ABS:
@@ -550,9 +621,9 @@ int main(int argc, char *argv[])
*/
if (ev.code == ABS_HAT0X || ev.code == ABS_HAT0Y) {
if (ev.value == 1 || ev.value == -1) {
- state = keypress(state, ev, ofd);
+ g_state = keypress(g_state, ev, ofd);
} else if (ev.value == 0) {
- state = keyrelease(state, ev, ofd);
+ g_state = keyrelease(g_state, ev, ofd);
}
} else if (ev.code == ABS_X || ev.code == ABS_Y || ev.code == ABS_RX || ev.code == ABS_RY) {
/*
@@ -576,13 +647,13 @@ int main(int argc, char *argv[])
if (abs_previous[ev.code] != 0) {
const int8_t value = ev.value;
ev.value = 0;
- state = keyrelease(state, ev, ofd);
+ g_state = keyrelease(g_state, ev, ofd);
ev.value = value;
}
- state = keypress(state, ev, ofd);
+ g_state = keypress(g_state, ev, ofd);
abs_previous[ev.code] = ev.value;
} else if (ev.value == 0) {
- state = keyrelease(state, ev, ofd);
+ g_state = keyrelease(g_state, ev, ofd);
abs_previous[ev.code] = ev.value;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-18 20:01:06 +0000