libsaria: Store current audio volume

This allows me to restore the volume on startup.

include/libsaria/audio.h

@@ -32,8 +32,8 @@ namespace libsaria
 		string durstr();
 
 		/* Volume functions */
-		double get_volume();
-		void set_volume(double);
+		float get_volume();
+		void set_volume(float);
 	};
 };
 

libsaria/audio/audio.cpp

@@ -91,7 +91,7 @@ namespace libsaria
 		g_signal_connect(player, "about-to-finish", G_CALLBACK(about_to_finish), NULL);
 		g_signal_connect(player, "audio-changed", G_CALLBACK(audio_changed), NULL);
 
-		set_volume(1.0);
+		init_volume();
 	}
 
 };

libsaria/audio/audio.h

@@ -13,4 +13,12 @@ extern GstBus *bus;
 
 void load_file(GstElement *, string);
 
+namespace libsaria
+{
+	namespace audio
+	{
+		void init_volume();
+	}
+}
+
 #endif /* LIBSARIA_AUDIO_PRIVATE_H */

libsaria/audio/volume.cpp

@@ -1,25 +1,33 @@
 
 #include <libsaria/audio.h>
+#include <libsaria/prefs.h>
 #include "audio.h"
 
-static double cur_volume;
+void configure_volume(float volume)
+{
+	GValue value = { 0, };
+	g_value_init(&value, G_TYPE_DOUBLE);
+	g_value_set_double(&value, volume);
+
+	g_object_set_property(G_OBJECT(player), "volume", &value);
+}
 
 namespace libsaria
 {
 
-	void audio::set_volume(double volume)
+	void audio::set_volume(float volume)
 	{
-		GValue value = { 0, };
-		g_value_init(&value, G_TYPE_DOUBLE);
-		g_value_set_double(&value, volume);
-
-		g_object_set_property(G_OBJECT(player), "volume", &value);
-		cur_volume = volume;
+		prefs::set("volume", volume);
 	}
 
-	double audio::get_volume()
+	void audio::init_volume()
 	{
-		return cur_volume;
+		configure_volume(prefs::get_float("volume", 1.0));
+	}
+
+	float audio::get_volume()
+	{
+		return prefs::get_float("volume", 1.0);
 	}
 
 };