www.pudn.com > XvidQP.rar > FastReadStream.h

//	VirtualDub - Video processing and capture application 
//	Copyright (C) 1998-2001 Avery Lee 
// 
//	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 of the License, 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 this program; if not, write to the Free Software 
//	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
 
#ifndef f_VIRTUALDUB_FASTREADSTREAM_H 
#define f_VIRTUALDUB_FASTREADSTREAM_H 
 
#include  
 
class FastReadStreamHeader; 
 
class FastReadStream { 
public: 
	FastReadStream(HANDLE hFile, long lBlockCount, long lBlockSize); 
	FastReadStream(int iFile, long lBlockCount, long lBlockSize); 
	~FastReadStream(); 
 
	bool Ready(); 
	long Read(int stream, __int64 i64Pos, void *pBuffer, long lBytes); 
	void Flush(); 
 
private: 
	HANDLE hFile; 
	int iFile; 
	long lBlockCount; 
	long lBlockSize; 
	long lHistory; 
 
	FastReadStreamHeader *pHeaders; 
	void *pBuffer; 
 
	void _Init(long lBlockCount, long lBlockSize); 
	int _PickVictim(int stream); 
	int _Commit(int stream, __int64 i64BlockNo); 
}; 
 
#endif