From: Sung-Jin Park <sj76.park@samsung.com>
Date: Mon, 20 Aug 2018 07:21:43 +0000 (+0900)
Subject: udev-seat: add apis to set udev monitor's event source and buffer size
X-Git-Tag: submit/tizen/20180820.112831^0
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b7a74486992d1c7dea438ba659b0dec0b1845613;p=platform%2Fupstream%2Flibinput.git

udev-seat: add apis to set udev monitor's event source and buffer size

Change-Id: Ib41e5421c174e2d5cc26bc19f077a045ad7a2e19
Signed-off-by: Sung-Jin Park <sj76.park@samsung.com>
---

diff --git a/src/libinput.h b/src/libinput.h
index 3496a47f..13be6e7d 100644
--- a/src/libinput.h
+++ b/src/libinput.h
@@ -3206,6 +3206,28 @@ int
 libinput_udev_assign_seat(struct libinput *libinput,
 			  const char *seat_id);
 
+/**
+ * @ingroup base
+ *
+ * Set the event source of udev monitor.
+ * The default event source of udev monitor is "udev".
+ *
+ * @param source The event source of udev monitor
+ */
+void
+libinput_udev_set_udev_monitor_event_source(const char *source);
+
+/**
+ * @ingroup base
+ *
+ * Set the buffer size of udev monitor.
+ *
+ * @param size The buffer size of udev monitor.
+ * @return 0 on success or -1 on failure.
+ */
+int
+libinput_udev_set_udev_monitor_buffer_size(int size);
+
 /**
  * @ingroup base
  *
diff --git a/src/libinput.sym b/src/libinput.sym
index f72e13f5..4ef2c27b 100644
--- a/src/libinput.sym
+++ b/src/libinput.sym
@@ -309,4 +309,6 @@ LIBINPUT_1.7 {
 	libinput_event_switch_get_switch;
 	libinput_event_switch_get_time;
 	libinput_event_switch_get_time_usec;
+	libinput_udev_set_udev_monitor_event_source;
+	libinput_udev_set_udev_monitor_buffer_size;
 } LIBINPUT_1.5;
diff --git a/src/udev-seat.c b/src/udev-seat.c
index 4878c3cf..13a61b5f 100644
--- a/src/udev-seat.c
+++ b/src/udev-seat.c
@@ -36,6 +36,21 @@
 static const char default_seat[] = "seat0";
 static const char default_seat_name[] = "default";
 
+char *_udev_monitor_event_source = NULL;
+int _udev_monitor_buffer_size = 0;
+
+static char *
+_udev_get_udev_monitor_event_source(void)
+{
+	return _udev_monitor_event_source;
+}
+
+static int
+_udev_get_udev_monitor_buffer_size(void)
+{
+	return _udev_monitor_buffer_size;
+}
+
 static struct udev_seat *
 udev_seat_create(struct udev_input *input,
 		 const char *device_seat,
@@ -259,15 +274,18 @@ udev_input_enable(struct libinput *libinput)
 	if (input->udev_monitor)
 		return 0;
 
-	char *env;
+	char *env = _udev_get_udev_monitor_event_source();
 
-	if ((env = getenv("UDEV_MONITOR_EVENT_SOURCE")))
+	if (env)
 	{
-		log_info(libinput, "udev: event source is %s.\n", env);
 		input->udev_monitor = udev_monitor_new_from_netlink(udev, env);
+		log_info(libinput, "udev: event source is %s.\n", env);
 	}
 	else
+	{
 		input->udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
+		log_info(libinput, "udev: event source is udev (default event source).\n");
+	}
 
 	if (!input->udev_monitor) {
 		log_info(libinput,
@@ -275,8 +293,9 @@ udev_input_enable(struct libinput *libinput)
 		return -1;
 	}
 
-	env = getenv("UDEV_MONITOR_BUFFER_SIZE");
-	if (env && (buf_size = atoi(env)))
+    buf_size = _udev_get_udev_monitor_buffer_size();
+
+	if (buf_size)
 	{
 		log_info(libinput,"udev: set receive buffer size = %d\n", buf_size);
 		udev_monitor_set_receive_buffer_size(input->udev_monitor, buf_size);
@@ -386,6 +405,31 @@ static const struct libinput_interface_backend interface_backend = {
 	.device_change_seat = udev_device_change_seat,
 };
 
+LIBINPUT_EXPORT void
+libinput_udev_set_udev_monitor_event_source(const char *source)
+{
+	if (source)
+	{
+		if (_udev_monitor_event_source)
+		{
+			free(_udev_monitor_event_source);
+			_udev_monitor_event_source = NULL;
+		}
+
+		_udev_monitor_event_source = strdup(source);
+	}
+}
+
+LIBINPUT_EXPORT int
+libinput_udev_set_udev_monitor_buffer_size(int size)
+{
+	if (0 >= size)
+		return -1;
+
+	_udev_monitor_buffer_size = size;
+	return 0;
+}
+
 LIBINPUT_EXPORT struct libinput *
 libinput_udev_create_context(const struct libinput_interface *interface,
 			     void *user_data,
@@ -408,6 +452,7 @@ libinput_udev_create_context(const struct libinput_interface *interface,
 	}
 
 	input->udev = udev_ref(udev);
+	_udev_monitor_event_source = strdup("udev");
 
 	return &input->base;
 }