Make mouse playback work.

This only includes left mouse button clicks, not right mouse button
clicks or scrollwheels.

playback.c

@@ -10,7 +10,13 @@
 #include <linux/uinput.h>
 #include <sys/stat.h>
 
-int read_file(char* filename);
+int handle_keyboard(char* details, int keyboard_fd);
+int handle_line(char* line, int keyboard_fd, int mouse_fd);
+int handle_mouse(char* details, int mouse_fd);
+int read_file(char* filename, int keyboard_fd, int mouse_fd);
+int setup_mouse();
+void teardown_keyboard(int fd);
+void teardown_mouse(int fd);
 
 void emit(int fd, int type, int code, int val) {
 	struct input_event ie;
@@ -23,7 +29,19 @@ void emit(int fd, int type, int code, int val) {
 	write(fd, &ie, sizeof(ie));
 }
 
-int handle_line(char* line) {
+int handle_keyboard(char* details, int keyboard_fd) {
+	int code, event_type, value;
+	int matched = sscanf(details, "%d,%d,%d", &event_type, &code, &value);
+	if(matched != 3) {
+		printf("Didn't match enough values for a keyboard event.\n");
+		return 1;
+	}
+	printf("Event type: %d, Code: %d, Value: %d\n",
+		event_type, code, value);
+	return 0;
+}
+
+int handle_line(char* line, int keyboard_fd, int mouse_fd) {
 	static time_t timer_seconds = 0;
 	static long timer_nanos = 0;
 
@@ -49,7 +67,6 @@ int handle_line(char* line) {
 		--to_sleep.tv_nsec;
 		to_sleep.tv_nsec += 1000000000L;
 	}
-	printf("%s", line);
 	// printf("Timer %ld %ld\n", timer_seconds, timer_nanos);
 	// printf("Read %ld %ld\n", seconds, nanos);
 	// printf("Sleep %ld %ld\n", to_sleep.tv_sec, to_sleep.tv_nsec);
@@ -60,6 +77,47 @@ int handle_line(char* line) {
 	}
 	timer_seconds = seconds;
 	timer_nanos = nanos;
+
+	if(type == 'k') {
+		return handle_keyboard(details, keyboard_fd);
+	} else if(type == 'm') {
+		return handle_mouse(details, mouse_fd);
+	} else {
+		printf("Unexpected type %c/n", type);
+		return 1;
+	}
+}
+
+int handle_mouse(char* details, int mouse_fd) {
+	static int current_left = 0;
+	static int current_middle = 0;
+	static int current_right = 0;
+
+	int left, middle, right, x, y;
+	int matched = sscanf(details, "l%d,m%d,r%d,x%d,y%d",
+		&left, &middle, &right, &x, &y);
+	if(matched != 5) {
+		printf("Failed to match enough data for a mouse event.\n");
+		return 1;
+	}
+	printf("L: %d M: %d, R: %d, X: %d, Y: %d\n",
+		left, middle, right, x, y);
+
+	/* Move the mouse diagonally, 5 units per axis */
+	if(x != 0) {
+		emit(mouse_fd, EV_REL, REL_X, x);
+	}
+	if(y != 0) {
+		emit(mouse_fd, EV_REL, REL_Y, y);
+	}
+	
+	if(left != current_left) {
+		emit(mouse_fd, EV_KEY, BTN_MOUSE, left);
+		current_left = left;
+	}
+	emit(mouse_fd, EV_SYN, SYN_REPORT, 0);
+
+
 	return 0;
 }
 
@@ -69,13 +127,18 @@ int main(int argc, char* argv[]) {
 		exit(EXIT_FAILURE);
 	}
 
-	if(read_file(argv[1])) {
+	int result = 0;
-		exit(EXIT_FAILURE);
+	int mouse_fd = setup_mouse();
+	int keyboard_fd = 0;
+	if(read_file(argv[1], keyboard_fd, mouse_fd)) {
+		result = EXIT_FAILURE;
 	}
-	return 0;
+	teardown_keyboard(keyboard_fd);
+	teardown_mouse(mouse_fd);
+	return result;
 }
 
-int read_file(char* filename) {
+int read_file(char* filename, int keyboard_fd, int mouse_fd) {
 	FILE* fp;
 	char* line = NULL;
 	size_t len = 0;
@@ -88,7 +151,7 @@ int read_file(char* filename) {
 	}
 
 	while((read = getline(&line, &len, fp)) != -1) {
-		if(handle_line(line)) {
+		if(handle_line(line, keyboard_fd, mouse_fd)) {
 			return 1;
 		}
 	}
@@ -96,16 +159,9 @@ int read_file(char* filename) {
 	
 int setup_mouse() {
 	struct uinput_setup usetup;
-	// int i = 50;
-	int i = 0;
 	int fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
 
 /* enable mouse button left and relative events */
-   printf("EV_KEY 0x%08x\n", EV_KEY);
-   printf("UI_SET_EVBIT 0x%08lx\n", UI_SET_EVBIT);
-   printf("UI_SET_KEYBIT 0x%08lx\n", UI_SET_KEYBIT);
-   printf("BTN_LEFT 0x%08x\n", BTN_LEFT);
-   printf("EV_REL 0x%08x\n", EV_REL);
 
 	ioctl(fd, UI_SET_EVBIT, EV_KEY);
 
@@ -119,7 +175,7 @@ int setup_mouse() {
 	usetup.id.bustype = BUS_USB;
 	usetup.id.vendor = 0x1234; /* sample vendor */
 	usetup.id.product = 0x5678; /* sample product */
-   strcpy(usetup.name, "Example device");
+	strcpy(usetup.name, "Playback mouses");
 
 	ioctl(fd, UI_DEV_SETUP, &usetup);
 	ioctl(fd, UI_DEV_CREATE);
@@ -131,30 +187,14 @@ int setup_mouse() {
 	* the event, otherwise it will not notice the event we are about
 	* to send. This pause is only needed in our example code!
 	*/
-   sleep(1);
+	// sleep(1);
-
+	printf("Setup mouse to fd %d", fd);
-   /* Move the mouse diagonally, 5 units per axis */
+	return fd;
-   while (i--) {
+}
-      emit(fd, EV_REL, REL_X, 5);
-      emit(fd, EV_REL, REL_Y, 5);
-      emit(fd, EV_SYN, SYN_REPORT, 0);
-      usleep(15000);
-   }
-
-   // Click left mouse button.
-
-   emit(fd, EV_KEY, BTN_MOUSE, 1);
-   emit(fd, EV_SYN, SYN_REPORT, 0);
-   emit(fd, EV_KEY, BTN_MOUSE, 0);
-   emit(fd, EV_SYN, SYN_REPORT, 0);
-   /*
-    * Give userspace some time to read the events before we destroy the
-    * device with UI_DEV_DESTOY.
-    */
-   sleep(1);
 
+void teardown_mouse(int fd) {
 	ioctl(fd, UI_DEV_DESTROY);
 	close(fd);
-
-   return 0;
 }
+
+void teardown_keyboard(int fd) {}