1 files changed, 73 insertions, 0 deletions
diff --git a/signal.c b/signal.c
new file mode 100644
index 0000000..3618e34
--- /dev/null
+++ b/signal.c
@@ -0,0 +1,73 @@
+/*
+ *  fmrxd - a daemon to enable and multiplex access to the N950/N9 radio tuner
+ *  Copyright (C) 2011 Javier S. Pedro <maemo@javispedro.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "fmrxd.h"
+
+#include <glib.h>
+#include <linux/videodev2.h>
+
+static guint signal_timer_id = 0;
+static uint16_t last_signal_level = 0;
+
+static void signal_update()
+{
+	uint16_t new_signal_level = tuner_get_signal();
+	if (new_signal_level != last_signal_level) {
+		server_notify_signal(new_signal_level);
+		last_signal_level = new_signal_level;
+	}
+}
+
+static gboolean signal_poll(gpointer user_data)
+{
+	if (!signal_timer_id) return FALSE;
+	signal_update();
+	return TRUE;
+}
+
+static gboolean signal_refresh(gpointer user_data)
+{
+	if (!signal_timer_id) return FALSE;
+	signal_update();
+	return FALSE;
+}
+
+bool configure_signal(bool on)
+{
+	if (on) {
+		if (!signal_timer_id) {
+			signal_timer_id = g_timeout_add_seconds(SIGNAL_POLL_INTERVAL, signal_poll, NULL);
+		}
+	} else {
+		if (signal_timer_id) {
+			g_source_remove(signal_timer_id);
+			signal_timer_id = 0;
+		}
+	}
+
+	return true;
+}
+
+void signal_reset()
+{
+	last_signal_level = 0;
+	if (signal_timer_id) {
+		g_timeout_add(SIGNAL_REFRESH_DELAY, signal_refresh, NULL);
+	}
+}