imgrab.h

采用zlib标准的压缩源码

#ifndef __MOSESGRAB_INTERFACE_DEFINE_H__
#define __MOSESGRAB_INTERFACE_DEFINE_H__

#ifndef __cplusplus
#error "Moses Grab Module Need a C++ Compiler!!!"
#endif

#ifdef MOSES_GRAB_EXPORTS
#define MOSES_GRAB_API  //__declspec(dllexport)
#else
#define MOSES_GRAB_API  //__declspec(dllimport)
#endif

#define Z_DEFAULT_COMPRESSION  (-1)
 typedef void * LPVOID;
 typedef unsigned char BYTE;
 typedef  BYTE * LPBYTE;
 typedef  unsigned long int DWORD;

class IMosesGrab
{
public:	
	virtual int Grab(LPVOID lpDest, DWORD *dwDestLen,
		LPVOID lpSource, DWORD dwSourceLen, int nLevel = Z_DEFAULT_COMPRESSION) = 0;
	//Compresses the source buffer into the destination buffer.
	
	virtual int UnGrab(LPVOID lpDest, DWORD *dwDestLen,
		LPVOID lpSource, DWORD dwSourceLen) = 0;
	//Decompresses the source buffer into the destination buffer.

	virtual void Release() = 0;

};

LPVOID MOSES_GRAB_API MosesGrabCreateInstance();

#endif //__MOSESGRAB_INTERFACE_DEFINE_H__