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https://github.com/Team-Resurgent/XBMC4Xbox.git
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Rocky5
921f9fe9f8
If ever adding the XBMC4Xbox source to GitHub use "git add -f -A" or it wont add all the files.
97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
/*
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* Copyright (C) 2005-2013 Team XBMC
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* http://xbmc.org
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*
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* This Program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This Program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with XBMC; see the file COPYING. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef XFILECACHESTRATEGY_H
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#define XFILECACHESTRATEGY_H
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#include <stdint.h>
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#ifdef _LINUX
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#include "PlatformDefs.h"
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#include "XHandlePublic.h"
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#include "XFileUtils.h"
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#endif
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#include "utils/CriticalSection.h"
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#include "utils/Event.h"
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namespace XFILE {
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#define CACHE_RC_OK 0
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#define CACHE_RC_ERROR -1
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#define CACHE_RC_WOULD_BLOCK -2
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#define CACHE_RC_TIMEOUT -3
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class CCacheStrategy{
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public:
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CCacheStrategy();
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virtual ~CCacheStrategy();
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virtual int Open() = 0;
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virtual void Close() = 0;
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virtual int WriteToCache(const char *pBuffer, size_t iSize) = 0;
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virtual int ReadFromCache(char *pBuffer, size_t iMaxSize) = 0;
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virtual int64_t WaitForData(unsigned int iMinAvail, unsigned int iMillis) = 0;
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virtual int64_t Seek(int64_t iFilePosition) = 0;
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virtual void Reset(int64_t iSourcePosition) = 0;
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virtual void EndOfInput(); // mark the end of the input stream so that Read will know when to return EOF
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virtual bool IsEndOfInput();
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virtual void ClearEndOfInput();
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CEvent m_space;
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protected:
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bool m_bEndOfInput;
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};
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/**
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*/
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class CSimpleFileCache : public CCacheStrategy {
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public:
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CSimpleFileCache();
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virtual ~CSimpleFileCache();
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virtual int Open() ;
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virtual void Close() ;
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virtual int WriteToCache(const char *pBuffer, size_t iSize) ;
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virtual int ReadFromCache(char *pBuffer, size_t iMaxSize) ;
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virtual int64_t WaitForData(unsigned int iMinAvail, unsigned int iMillis) ;
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virtual int64_t Seek(int64_t iFilePosition);
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virtual void Reset(int64_t iSourcePosition);
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virtual void EndOfInput();
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int64_t GetAvailableRead();
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protected:
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HANDLE m_hCacheFileRead;
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HANDLE m_hCacheFileWrite;
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HANDLE m_hDataAvailEvent;
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volatile int64_t m_nStartPosition;
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volatile int64_t m_nWritePosition;
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volatile int64_t m_nReadPosition;
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};
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}
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#endif
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