From 560742c100d86fb654a6959823a57396ee665cb1 Mon Sep 17 00:00:00 2001
From: Stefan Sayer <stefan.sayer@googlemail.com>
Date: Thu, 7 Jun 2007 18:04:10 +0000
Subject: [PATCH] Adds AmPlaylistSeparator, which can be used to get notified
 in the Session when the playlist reaches a certain entry.

git-svn-id: http://svn.berlios.de/svnroot/repos/sems/trunk@351 8eb893ce-cfd4-0310-b710-fb5ebe64c474
---
 core/AmPlaylist.h | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/core/AmPlaylist.h b/core/AmPlaylist.h
index 9433d3db..8798ea52 100644
--- a/core/AmPlaylist.h
+++ b/core/AmPlaylist.h
@@ -88,6 +88,43 @@ class AmPlaylist: public AmAudio
   void close();
 };
 
+/**
+ * \brief event fired by the AmPlaylistSeparator
+ */
+class AmPlaylistSeparatorEvent : 
+  public AmEvent {
+public:
+  AmPlaylistSeparatorEvent(int id)
+    : AmEvent(id) { }
+};
+
+/**
+ * null-playlist element which notifies session that this position in 
+ * playlist is reached. It fies a AmPlaylistSeparatorEvent if it is 
+ * read or written.
+ */
+class AmPlaylistSeparator 
+  : public AmAudio {
+  bool notified;
+  AmEventQueue* ev_q;
+  int id;
+public:  
+  AmPlaylistSeparator(AmEventQueue* q, int id)
+    : ev_q(q), notified(false), id(id) { }
+  ~AmPlaylistSeparator() { }
+
+  int read(unsigned int user_ts, unsigned int size){
+    if (!notified) 
+      ev_q->postEvent(new AmPlaylistSeparatorEvent(id)); 
+    notified = true; 
+    return 0; 
+  }
+  int write(unsigned int user_ts, unsigned int size){
+    return read(user_ts, size);
+  }
+};
+
+
 
 
 #endif