Initial commit

1 files changed, 90 insertions, 0 deletions

diff --git a/rkbd/uinput.c b/rkbd/uinput.c
new file mode 100644
index 0000000..5704679
--- /dev/null
+++ b/rkbd/uinput.c
@@ -0,0 +1,90 @@
+#include <linux/input.h>
+#include <linux/uinput.h>
+#include <fcntl.h> 
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h> /* memset */
+#include <stdlib.h> /* EXIT_FAILURE */
+
+int keys[] = {
+	KEY_Q, /* prev */
+	KEY_E, /* next */
+	KEY_Z, /* shoot */
+	KEY_W,
+	KEY_A,
+	KEY_S,
+	KEY_D,
+	KEY_P, /* pause */
+	KEY_BACKSPACE, /* really "backspace" */
+};
+
+#define ARRAY_SIZE(a) (sizeof (a) / sizeof *(a) )
+
+int main() {
+	int i;
+	int fd = open("/dev/uinput", O_WRONLY);
+	if (fd < 0) {
+		perror("open");
+		return 1;
+	}
+	if (ioctl(fd, UI_SET_EVBIT, EV_KEY) < 0) {
+		perror("Cannot set EV_KEY bit");
+		goto err_close;
+	}
+	if (ioctl(fd, UI_SET_EVBIT, EV_SYN) < 0) {
+		perror("Cannot set EV_SYN bit");
+		goto err_close;
+	}
+	for (i = 0; i < ARRAY_SIZE(keys); ++i) {
+		if (ioctl(fd, UI_SET_KEYBIT, keys[i]) < 0) {
+			perror("SET_KEYBIT");
+			goto err_close;
+		}
+	}
+
+	struct uinput_user_dev uidev;
+	memset(&uidev, 0, sizeof(uidev));
+	snprintf(uidev.name, UINPUT_MAX_NAME_SIZE, "Boxhead");
+	if (write(fd, &uidev, sizeof(uidev)) < 0) {
+		perror("write uinput struct");
+		goto err_close;
+	}
+
+	if (ioctl(fd, UI_DEV_CREATE) < 0) {
+		perror("UI_DEV_CREATE");
+		goto err_close;
+	}
+
+	unsigned int code, is_pressed;
+	printf("Waiting for input...\n");
+	struct input_event ev;
+	memset(&ev, 0, sizeof(ev));
+	while (scanf("%u %u", &code, &is_pressed) == 2) {
+		if (code >= 1 && code <= ARRAY_SIZE(keys)) {
+			ev.type = EV_KEY;
+			ev.code = keys[code - 1];
+			ev.value = !!is_pressed;
+			//printf("code=%u value=%u\n", ev.code, ev.value);
+			if (write(fd, &ev, sizeof(ev)) < 0)
+				perror("write key");
+			/* input_sync() */
+			ev.type = EV_SYN;
+			ev.code = SYN_REPORT;
+			ev.value = 0;
+			if (write(fd, &ev, sizeof(ev)) < 0)
+				perror("write sync");
+		} else {
+			fprintf(stderr, "Unexpected key: %u (%#02x)\n", code, code);
+			break;
+		}
+	}
+	if (ioctl(fd, UI_DEV_DESTROY) < 0)
+		perror("Cannot destroy device");
+	if (close(fd) < 0)
+		perror("close");
+	return 0;
+err_close:
+	if (close(fd) < 0)
+		perror("close");
+	return EXIT_FAILURE;
+}