moparisthebest
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uinput-mapper
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Second joystick; proper closing of inputs.

This commit is contained in:
Merlijn Wajer 2012-12-03 23:06:12 +01:00
parent dc4c56bdfa
commit f4ca6c4231
1 changed files with 95 additions and 71 deletions
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166
map.c
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@ -18,7 +18,7 @@
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include <signal.h>
#include <linux/input.h>
#include <linux/uinput.h>
@ -52,6 +52,7 @@ static int get_key_num(char* name)
return -1;
}
static int js[2];
/* TODO:
* - Use atexit() to free joysticks
@ -59,25 +60,24 @@ static int get_key_num(char* name)
* - Add proper datastructures to keep track
*/
void free_js(int sig) {
int j;
for(j = 0; j < 2; j++) {
printf("Freeing joystick: %d\n", j);
if (ioctl(js[j], UI_DEV_DESTROY) < 0) {
perror("Error freeing joystick");
}
close(js[j]);
}
exit(1);
}
int main(int argc, char** argv) {
int i, nowrite;
int in, uin; /* fds */
int i, j, nowrite;
int in; /* fds */
struct input_event e, je;
struct uinput_user_dev uidev;
/*
* KEY_LEFT -> ABS_HAT0X
* KEY_RIGHT -> ABS_HAT0X
* KEY_UP -> ABS_HAT0Y
* KEY_DOWN -> ABS_HAT0Y
*
* KEY_LEFTCTRL -> BTN_0
* KEY_LEFTALT -> BTN_1
* KEY_SPACE -> BTN_2
*
* KEY_1 -> BTN_3
*/
int abskeyevs[] = {
ABS_HAT0X,
ABS_HAT0Y,
@ -85,7 +85,7 @@ int main(int argc, char** argv) {
};
int evkeys[] = {
BTN_JOYSTICK,
BTN_JOYSTICK, /* We need this to show up as Joystick */
BTN_0,
BTN_1,
BTN_2,
@ -93,6 +93,11 @@ int main(int argc, char** argv) {
0
};
if(signal(SIGINT, free_js)) {
printf("Atexit registration failed\n");
return 1;
}
/* Open input and uinput */
in = open(INPUT_PATH, O_RDONLY);
if(in < 0) {
@ -100,60 +105,62 @@ int main(int argc, char** argv) {
return 1;
}
uin = open(UINPUT_PATH, O_WRONLY | O_NONBLOCK);
if (uin < 0) {
perror("open uin");
return 2;
}
/* Register device opts */
if (ioctl(uin, UI_SET_EVBIT, EV_ABS) < 0) {
perror("ioctl EV_ABS");
return 1;
}
if (ioctl(uin, UI_SET_EVBIT, EV_KEY) < 0) {
perror("ioctl EV_KEY");
return 1;
}
/* Every ``button'' needs to be registered */
i = 0;
while(abskeyevs[i] != 0) {
if (ioctl(uin, UI_SET_ABSBIT, abskeyevs[i]) < 0) {
perror("ioctl dynamic");
for(j = 0; j < 2; j++) {
js[j] = open(UINPUT_PATH, O_WRONLY | O_NONBLOCK);
if (js[j] < 0) {
perror("open js[j]");
return 1;
}
i++;
}
i = 0;
while(evkeys[i] != 0) {
if (ioctl(uin, UI_SET_KEYBIT, evkeys[i]) < 0) {
perror("ioctl dynamic 2");
/* Register device opts */
if (ioctl(js[j], UI_SET_EVBIT, EV_ABS) < 0) {
perror("ioctl EV_ABS");
return 1;
}
i++;
}
if (ioctl(js[j], UI_SET_EVBIT, EV_KEY) < 0) {
perror("ioctl EV_KEY");
return 1;
}
/* Every ``button'' needs to be registered */
i = 0;
while(abskeyevs[i] != 0) {
if (ioctl(js[j], UI_SET_ABSBIT, abskeyevs[i]) < 0) {
perror("ioctl dynamic");
return 1;
}
i++;
}
i = 0;
while(evkeys[i] != 0) {
if (ioctl(js[j], UI_SET_KEYBIT, evkeys[i]) < 0) {
perror("ioctl dynamic 2");
return 1;
}
i++;
}
/* Allocate device info */
memset(&uidev, '\0', sizeof(struct uinput_user_dev));
snprintf(uidev.name, UINPUT_MAX_NAME_SIZE, "key2joy:1");
/* Allocate device info */
memset(&uidev, '\0', sizeof(struct uinput_user_dev));
snprintf(uidev.name, UINPUT_MAX_NAME_SIZE, "key2joy:1");
uidev.id.bustype = BUS_USB;
uidev.id.vendor = 0x42;
uidev.id.product = 0xbebe;
uidev.id.version = 1;
uidev.id.bustype = BUS_USB;
uidev.id.vendor = 0x42;
uidev.id.product = 0xbebe;
uidev.id.version = 1;
if (write(uin, &uidev, sizeof(uidev)) < 0) {
perror("write");
return -1;
}
if (write(js[j], &uidev, sizeof(uidev)) < 0) {
perror("write");
return -1;
}
if (ioctl(uin, UI_DEV_CREATE)) {
perror("ioctl create");
return 1;
if (ioctl(js[j], UI_DEV_CREATE)) {
perror("ioctl create");
return 1;
}
}
/* Do it! */
@ -165,30 +172,47 @@ int main(int argc, char** argv) {
memset(&je, '\0', sizeof(struct input_event));
nowrite = 0;
j = 0;
if (e.type == EV_KEY) {
switch(e.code) {
case KEY_UP:
je.type = EV_ABS; je.code = ABS_HAT0Y; je.value = -e.value; break;
je.type = EV_ABS; je.code = ABS_HAT0Y; je.value = -e.value; j = 0; break;
case KEY_DOWN:
je.type = EV_ABS; je.code = ABS_HAT0Y; je.value = e.value; break;
je.type = EV_ABS; je.code = ABS_HAT0Y; je.value = e.value; j = 0; break;
case KEY_LEFT:
je.type = EV_ABS; je.code = ABS_HAT0X; je.value = -e.value; break;
je.type = EV_ABS; je.code = ABS_HAT0X; je.value = -e.value; j = 0; break;
case KEY_RIGHT:
je.type = EV_ABS; je.code = ABS_HAT0X; je.value = e.value; break;
je.type = EV_ABS; je.code = ABS_HAT0X; je.value = e.value; j = 0; break;
case KEY_LEFTCTRL:
je.type = EV_KEY; je.code = BTN_0; je.value = e.value; break;
je.type = EV_KEY; je.code = BTN_0; je.value = e.value; j = 0; break;
case KEY_LEFTALT:
je.type = EV_KEY; je.code = BTN_1; je.value = e.value; break;
je.type = EV_KEY; je.code = BTN_1; je.value = e.value; j = 0; break;
case KEY_SPACE:
je.type = EV_KEY; je.code = BTN_2; je.value = e.value; break;
je.type = EV_KEY; je.code = BTN_2; je.value = e.value; j = 0; break;
case KEY_1:
je.type = EV_KEY; je.code = BTN_3; je.value = e.value; break;
je.type = EV_KEY; je.code = BTN_3; je.value = e.value; j = 0; break;
case KEY_R:
je.type = EV_ABS; je.code = ABS_HAT0Y; je.value = -e.value; j = 1; break;
case KEY_F:
je.type = EV_ABS; je.code = ABS_HAT0Y; je.value = e.value; j = 1; break;
case KEY_D:
je.type = EV_ABS; je.code = ABS_HAT0X; je.value = -e.value; j = 1; break;
case KEY_G:
je.type = EV_ABS; je.code = ABS_HAT0X; je.value = e.value; j = 1; break;
case KEY_A:
je.type = EV_KEY; je.code = BTN_0; je.value = e.value; j = 1; break;
case KEY_S:
je.type = EV_KEY; je.code = BTN_1; je.value = e.value; j = 1; break;
case KEY_Q:
je.type = EV_KEY; je.code = BTN_2; je.value = e.value; j = 1; break;
case KEY_2:
je.type = EV_KEY; je.code = BTN_3; je.value = e.value; j = 1; break;
default:
nowrite = 1;
}
if (nowrite == 0) {
if(write(uin, &je, sizeof(struct input_event)) < 0) {
if(write(js[j], &je, sizeof(struct input_event)) < 0) {
perror("EV_ABS Write event");
return -1;
}
@ -204,7 +228,7 @@ int main(int argc, char** argv) {
je.code = 0;
je.value = 0;
if (write(uin, &je, sizeof(struct input_event)) < 0) {
if (write(js[j], &je, sizeof(struct input_event)) < 0) {
perror("SYN write event");
return -1;
}