forked from xbmc/xbmc
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BackgroundInfoLoader.h
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/
BackgroundInfoLoader.h
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#pragma once
/*
* Copyright (C) 2005-2008 Team XBMC
* http://www.xbmc.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XBMC; see the file COPYING. If not, see
* <http://www.gnu.org/licenses/>.
*
*/
#include "threads/Thread.h"
#include "IProgressCallback.h"
#include "threads/CriticalSection.h"
#include <vector>
#include "boost/shared_ptr.hpp"
class CFileItem; typedef boost::shared_ptr<CFileItem> CFileItemPtr;
class CFileItemList;
class IBackgroundLoaderObserver
{
public:
virtual ~IBackgroundLoaderObserver() {}
virtual void OnItemLoaded(CFileItem* pItem) = 0;
};
class CBackgroundInfoLoader : public IRunnable
{
public:
CBackgroundInfoLoader(int nThreads=-1);
virtual ~CBackgroundInfoLoader();
void Load(CFileItemList& items);
bool IsLoading();
virtual void Run();
void SetObserver(IBackgroundLoaderObserver* pObserver);
void SetProgressCallback(IProgressCallback* pCallback);
virtual bool LoadItem(CFileItem* pItem) { return false; };
void StopThread(); // will actually stop all worker threads.
void StopAsync(); // will ask loader to stop as soon as possible, but not block
void SetNumOfWorkers(int nThreads); // -1 means auto compute num of required threads
protected:
virtual void OnLoaderStart() {};
virtual void OnLoaderFinish() {};
CFileItemList *m_pVecItems;
std::vector<CFileItemPtr> m_vecItems; // FileItemList would delete the items and we only want to keep a reference.
CCriticalSection m_lock;
bool m_bStartCalled;
volatile bool m_bStop;
int m_nRequestedThreads;
int m_nActiveThreads;
IBackgroundLoaderObserver* m_pObserver;
IProgressCallback* m_pProgressCallback;
std::vector<CThread *> m_workers;
};