From 73f394bc2a14f8d4a4aff07a3bdaadd3ed2ea6b7 Mon Sep 17 00:00:00 2001
From: Olaf Leidinger <oleid@mescharet.de>
Date: Sun, 22 Feb 2015 11:18:16 +0100
Subject: [PATCH] fix playback issue (#20)

---
 src/utils.js | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/src/utils.js b/src/utils.js
index 0f9b3ad..e18f504 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -84,10 +84,24 @@ function formatTime(sec_num) {
 }
 
 function playSound(uri) {
-    Gst.init(null, 0);
-    let player = Gst.ElementFactory.make("playbin","player");
-    player.set_property('uri', uri);
-    player.set_state(Gst.State.PLAYING);
+    if ( typeof this.player == 'undefined' ) {
+        Gst.init(null, 0);
+        this.player  = Gst.ElementFactory.make("playbin","player");
+        this.playBus = this.player.get_bus();
+        this.playBus.add_signal_watch();
+        this.playBus.connect("message", Lang.bind(this,
+        function(playBus, message) {
+            if (message != null) {
+                // IMPORTANT: to reuse the player, set state to READY
+                let t = message.type;
+                if ( t == Gst.MessageType.EOS || t == Gst.MessageType.ERROR) {
+                    this.player.set_state(Gst.State.READY);
+                }
+            } // message handler
+        }));
+    } // if undefined
+    this.player.set_property('uri', uri);
+    this.player.set_state(Gst.State.PLAYING);
 }
 
 function setCairoColorFromClutter(cr, c) {