sourcebuffer.h

电视字幕卡调用DLL模块

#ifndef __SOURCEBUFFER_H__
#define __SOURCEBUFFER_H__

class CSourceBuffer
{
public:
	CSourceBuffer ( HANDLE hFileHandle );
	~CSourceBuffer ( );

	BOOL GetFileData ( DWORD *dwDWord, DWORD *dwDataLength );
	void ForwardJump ( DWORD dwDWord );
	void BackwardJump ( DWORD dwDWord );
	void JumpToEnd ( DWORD dwBytes );
	void JumpToBegin ( DWORD dwBytes );

protected:
	HANDLE m_hFileHandle;
	HANDLE m_hFileMap;
	LONGLONG m_llInBuffer;
	LONGLONG m_llOutBuffer;

	ULARGE_INTEGER m_llFileLength;
	DWORD	m_dwAllocationGranularity;
	SYSTEM_INFO m_tagSinf;
	LONGLONG m_llFileLengthTmp;
	
};

#endif