bedohswe/poor_mans_gamepad
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bʰedoh₂ swé 2024-07-08 13:14:34 +05:00
parent 1b12979d60
commit 2c06e30444
4 changed files with 63 additions and 34 deletions
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10
README.md
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@ -2,12 +2,6 @@
# Usage # Usage
`poormansgamepad devicepath scale_axis scale_wheel deadzone` `./poormansgamepad devicepath sensitivity_horizontal sensitivity_vertical sensitivity_wheel deadzone_horizontal deadzone_vertical deadzone_wheel drop_horizontal drop_vertical drop_wheel`
`devicepath` - Path to mouse device (/dev/input/eventX) `drop` - How fast axes get back into neutral position.
`scale_axis` - Sensitivity for the virtual thumbstick
`scale_wheel` - Sensitivity for the virtual trigger
`deadzone` - Deadzone for the virtual thumbstick

2
src/gamepad.c
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@ -48,7 +48,7 @@ int setupaxis(int uinput, int code) {
return ioctl(uinput, UI_ABS_SETUP, &axis); return ioctl(uinput, UI_ABS_SETUP, &axis);
} }
int setupgamepad() { int setupgamepad(void) {
struct uinput_setup usetup; struct uinput_setup usetup;
int uinput = open("/dev/uinput", O_WRONLY | O_NONBLOCK); int uinput = open("/dev/uinput", O_WRONLY | O_NONBLOCK);

2
src/gamepad.h
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@ -1,3 +1,3 @@
void sendkey(int uinput, int code, int val); void sendkey(int uinput, int code, int val);
void sendaxis(int uinput, int code, int val); void sendaxis(int uinput, int code, int val);
int setupgamepad(); int setupgamepad(void);

83
src/main.c
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@ -2,19 +2,29 @@
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <time.h>
#include <sys/poll.h>
#include <unistd.h> #include <unistd.h>
#include <fcntl.h> #include <fcntl.h>
#include <linux/uinput.h> #include <linux/uinput.h>
#include "gamepad.h" #include "gamepad.h"
#include "panic.h" #include "panic.h"
void waitmouse(int mouse, struct input_event* ie) { int waitmouse(int mouse, struct input_event* ie) {
while (1) { while (1) {
read(mouse, ie, sizeof(struct input_event)); struct pollfd fds[1];
if (ie->type != EV_SYN) fds[0].fd = mouse;
return; fds[0].events = POLLIN;
poll(fds, 1, 0);
if (fds[0].revents & POLLIN) {
read(mouse, ie, sizeof(struct input_event));
if (ie->type != EV_SYN)
return 1;
} else
return 0;
} }
} }
@ -46,19 +56,26 @@ int main(int argc, char* argv[]) {
fprintf(stderr, "????\n"); fprintf(stderr, "????\n");
return 255; return 255;
} }
if (argc != 5) { if (argc != 11) {
printf("Usage: %s devicepath scale_axis scale_wheel deadzone\n", argv[0]); printf("Usage: %s devicepath "
"sensitivity_horizontal sensitivity_vertical sensitivity_wheel "
"deadzone_horizontal deadzone_vertical deadzone_wheel "
"drop_horizontal drop_vertical drop_wheel\n", argv[0]);
return 1; return 1;
} }
struct input_event ie; struct input_event ie;
int axis_x = 0; int axis_x = 0;
int axis_y = 0; int axis_y = 0;
int axis_w = 0; int axis_w = 0;
int scale_axis = strtol(argv[2], NULL, 10); int scale_axis_x = strtol(argv[2], NULL, 10);
int scale_wheel = strtol(argv[3], NULL, 10); int scale_axis_y = strtol(argv[3], NULL, 10);
int deadzone = strtol(argv[3], NULL, 10); int scale_axis_w = strtol(argv[4], NULL, 10);
int drop_axis = 0; int deadzone_axis_x = strtol(argv[5], NULL, 10);
int drop_wheel = 0; int deadzone_axis_y = strtol(argv[6], NULL, 10);
int deadzone_axis_w = strtol(argv[7], NULL, 10);
int drop_axis_x = strtol(argv[8], NULL, 10);
int drop_axis_y = strtol(argv[9], NULL, 10);
int drop_axis_w = strtol(argv[10], NULL, 10);
char* device = argv[1]; char* device = argv[1];
int mouse = open(device, 0); int mouse = open(device, 0);
@ -67,20 +84,38 @@ int main(int argc, char* argv[]) {
int gamepad = setupgamepad(); int gamepad = setupgamepad();
struct timespec prev, current;
clock_gettime(CLOCK_MONOTONIC, &prev);
while (1) { while (1) {
waitmouse(mouse, &ie); clock_gettime(CLOCK_MONOTONIC, &current);
if (ie.type == EV_REL && ie.code == REL_X) long delta = (current.tv_sec - prev.tv_sec) * 1000000000 + current.tv_nsec - prev.tv_nsec;
axis_x = drop(axis_x + ie.value * scale_axis, drop_axis); if (delta > 10000000) {
if (ie.type == EV_REL && ie.code == REL_Y) axis_x = drop(axis_x, drop_axis_x);
axis_y = drop(axis_y + ie.value * scale_axis, drop_axis); axis_y = drop(axis_y, drop_axis_y);
if (ie.type == EV_REL && ie.code == REL_WHEEL) axis_w = drop(axis_w, drop_axis_w);
axis_w = drop(axis_w + ie.value * scale_wheel, drop_wheel); prev.tv_nsec = current.tv_nsec;
axis_x = clamp(axis_x); prev.tv_sec = current.tv_sec;
axis_y = clamp(axis_y); }
axis_w = clamp(axis_w); if (waitmouse(mouse, &ie)) {
sendaxis(gamepad, ABS_X, cut(axis_x, deadzone)); if (ie.type == EV_REL)
sendaxis(gamepad, ABS_Y, cut(axis_y, deadzone)); switch (ie.code) {
sendaxis(gamepad, ABS_HAT1X, axis_w); case REL_X:
axis_x = axis_x + ie.value * scale_axis_x;
break;
case REL_Y:
axis_y = axis_y + ie.value * scale_axis_y;
break;
case REL_WHEEL:
axis_w = axis_w + ie.value * scale_axis_w;
break;
}
axis_x = clamp(axis_x);
axis_y = clamp(axis_y);
axis_w = clamp(axis_w);
}
sendaxis(gamepad, ABS_X, cut(axis_x, deadzone_axis_x));
sendaxis(gamepad, ABS_Y, cut(axis_y, deadzone_axis_y));
sendaxis(gamepad, ABS_HAT1X, cut(axis_w, deadzone_axis_w));
if (ie.type == EV_KEY && ie.code == BTN_LEFT) if (ie.type == EV_KEY && ie.code == BTN_LEFT)
sendkey(gamepad, BTN_TL2, ie.value); sendkey(gamepad, BTN_TL2, ie.value);
if (ie.type == EV_KEY && ie.code == BTN_MIDDLE) if (ie.type == EV_KEY && ie.code == BTN_MIDDLE)