4 * Copyright (C) 2005-2008 Team XBMC
7 * This Program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
12 * This Program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with XBMC; see the file COPYING. If not, write to
19 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 * http://www.gnu.org/copyleft/gpl.html
24 #include "threads/Thread.h"
25 #include "IProgressCallback.h"
26 #include "threads/CriticalSection.h"
29 #include "boost/shared_ptr.hpp"
31 class CFileItem; typedef boost::shared_ptr<CFileItem> CFileItemPtr;
34 class IBackgroundLoaderObserver
37 virtual ~IBackgroundLoaderObserver() {}
38 virtual void OnItemLoaded(CFileItem* pItem) = 0;
41 class CBackgroundInfoLoader : public IRunnable
44 CBackgroundInfoLoader(int nThreads=-1);
45 virtual ~CBackgroundInfoLoader();
47 void Load(CFileItemList& items);
50 void SetObserver(IBackgroundLoaderObserver* pObserver);
51 void SetProgressCallback(IProgressCallback* pCallback);
52 virtual bool LoadItem(CFileItem* pItem) { return false; };
54 void StopThread(); // will actually stop all worker threads.
55 void StopAsync(); // will ask loader to stop as soon as possible, but not block
57 void SetNumOfWorkers(int nThreads); // -1 means auto compute num of required threads
60 virtual void OnLoaderStart() {};
61 virtual void OnLoaderFinish() {};
63 CFileItemList *m_pVecItems;
64 std::vector<CFileItemPtr> m_vecItems; // FileItemList would delete the items and we only want to keep a reference.
65 CCriticalSection m_lock;
68 volatile bool m_bStop;
69 int m_nRequestedThreads;
72 IBackgroundLoaderObserver* m_pObserver;
73 IProgressCallback* m_pProgressCallback;
75 std::vector<CThread *> m_workers;