- Moved cRecordings locking infrastructure to RecordingsManager.

- Take care to have at any time maximum one instance of RecordingsManager
  alive. This is done with a combination of boost::shared_ptr and
  boost::weak_ptr. See LiveRecordingsManager() function.
- RecordingsTree now uses RecordingsManager to calculate a MD5 Hash for
  each 'real' cRecording item.
- The MD5 Hash is used in the Ajax-Request to start play back of a
  recording. (Server side needs implementation of this.)
- Id's are also used in the DOM for the identification of the tooltips.
- New code dependency on openssl libraries (for md5 function).
- Changed style (not yet complete) to have 'action' items also in the
  recording description popup.

1 files changed, 33 insertions, 3 deletions

diff --git a/recordings.h b/recordings.h
index a8ea907..bf016a4 100644
--- a/recordings.h
+++ b/recordings.h
@@ -12,6 +12,27 @@ namespace vdrlive {
 	using namespace boost;
 	using namespace std;
 
+	class RecordingsManager;
+	typedef shared_ptr<RecordingsManager> RecordingsManagerPtr;
+
+	class RecordingsManager
+	{
+		friend RecordingsManagerPtr LiveRecordingsManager();
+
+		public:
+			/**
+			 *	generates a Md5 hash from a cRecording entry. It can be used
+			 *  to reidentify a recording.
+			 */
+			string Md5Hash(const cRecording* recording) const;
+
+		private:
+			RecordingsManager();
+
+			cThreadLock m_recordingsLock;
+	};
+
+
 	class RecordingsTree
 	{
 		public:
@@ -54,7 +75,7 @@ namespace vdrlive {
 
 					virtual time_t StartTime() const { return 0; }
 					virtual bool IsDir() const { return true; }
-					virtual const string Id() const { return ""; }
+					virtual const string Id() const { string e; return e; }
 
 				private:
 					int m_level;
@@ -79,7 +100,7 @@ namespace vdrlive {
 					string m_id;
 			};
 
-			RecordingsTree();
+			RecordingsTree(RecordingsManagerPtr recManPtr);
 
 			virtual ~RecordingsTree();
 
@@ -91,11 +112,20 @@ namespace vdrlive {
 		private:
 			int m_maxLevel;
 			RecordingsItemPtr m_root;
-			cThreadLock m_recordingsLock;
+			RecordingsManagerPtr m_recManPtr;
 
 			Map::iterator findDir(RecordingsItemPtr& dir, const string& dirname);
 	};
 
+	/**
+	 *	return singleton instance of RecordingsManager as a shared Pointer.
+	 *  This ensures that after last use of the RecordingsManager it is
+	 *  deleted. After deletion of the original RecordingsManager a repeated
+	 *  call to this function creates a new RecordingsManager which is again
+	 *	kept alive as long references to it exist.
+	 */
+	RecordingsManagerPtr LiveRecordingsManager();
+
 } // namespace vdrlive
 
 #endif // VDR_LIVE_RECORDINGS_H