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/*
* Copyright (C) 2005-2014 Team XBMC
* http://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/>.
*
*/
#ifndef MemBufferCache_H
#define MemBufferCache_H
#include "CacheStrategy.h"
#include "threads/CriticalSection.h"
#include "threads/Event.h"
#include "utils/RingBuffer.h"
/**
@author Team XBMC
*/
namespace XFILE {
class MemBufferCache : public CCacheStrategy
{
public:
MemBufferCache();
virtual ~MemBufferCache();
virtual int Open() ;
virtual void Close();
virtual size_t GetMaxWriteSize(const size_t& iRequestSize) ;
virtual int WriteToCache(const char *pBuffer, size_t iSize) ;
virtual int ReadFromCache(char *pBuffer, size_t iMaxSize) ;
virtual int64_t WaitForData(unsigned int iMinAvail, unsigned int iMillis) ;
virtual int64_t Seek(int64_t iFilePosition) ;
virtual bool Reset(int64_t iSourcePosition, bool clearAnyway) ;
protected:
int64_t m_nStartPosition;
CRingBuffer m_buffer;
CRingBuffer m_HistoryBuffer;
CRingBuffer m_forwardBuffer; // for seek cases, to store data already read
CCriticalSection m_sync;
CEvent m_written;
};
} // namespace XFILE
#endif
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