kev/Drawer/SSBase/DrawLocal/FileSegy.h

/////////////////////////////////////////////////////////////////////////////
//<2F><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>: 
//		SegY<67><59>д<EFBFBD><D0B4>
//
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д:		2008-11-09
//
//
/////////////////////////////////////////////////////////////////////////////

#pragma once
#include "file64.h"

#if !defined(__FILE64_SEGY__)
#define __FILE64_SEGY__

//nFormatCode is
//1 = 4-byte IBM floating-point
//2 = 4-byte, two's complement integer
//3 = 2-byte, two's complement integer
//4 = 4-byte fixed-point with gain (obsolete)
//5 = 4-byte IEEE floating-point
//6 = Not currently used
//7 = Not currently used
//8 = 1-byte, two's complement integer

//CreateIoFile(...) parameter

namespace NFile64
{

#define FILE_DEFAULT	0
#define FILE_MAPPING	1
#define FILE_HTTP		2

class CFileSegy :
	public CFile64
{
public:
	CFileSegy(void);
	virtual ~CFileSegy(void);

	enum EDataType
	{
		typeError		= 0,		//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		typeIbmFloat	= 1,		// 4-byte IBM floating-point
		typeIbmLong     = 2,		// 4-byte, two's complement integer
		typeIbmShort    = 3,		// 2-byte, two's complement integer
		typeIbmGainLong = 4,		// 4-byte fixed-point with gain (obsolete)
		typeIeeFloat    = 5,		// IEEE floating-point
									// 8-bit, integer
									// 7 Ϊ<>˵<EFBFBD><CBB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD>е<EFBFBD><D0B5><EFBFBD>չ
		typeChar        = 8,		// signed char (1 byte)
		typeIbmUShort   = 9,		// 2-byte, two's complement integer
		typeIeeShort	= 10,		//
		typeIeeLong		= 11,		//
		typeIeeDouble	= 12,		// IEEE˫<45><CBAB><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD><EFBFBD>8<EFBFBD>ֽڣ<D6BD>
	};
	//<2F><><EFBFBD>Ե<EFBFBD><D4B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>棨SEGY<47>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	static int SizeofDataType(EDataType dt);		//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵ij<CDB5><C4B3><EFBFBD>
	static CString GetFormatString(EDataType code);
	static EDataType GetFormatCode(CString name);

	//Ŀǰ<C4BF><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CFileSegy<67><79>CFileSegyMapping<6E><67><EFBFBD><EFBFBD>
	static CFileSegy* CreateIoFile(int nCreateMode = FILE_DEFAULT);	//newһ<77><D2BB><EFBFBD>¶<EFBFBD><C2B6><EFBFBD>

	double ReadBinary(EDataType dt, int IsPC);				//<2F><>ȡһ<C8A1><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	int ReadBinary(float * x, int num, EDataType dt, int IsSwap);
	int ReadBinary(double* x, int num, EDataType dt, int IsSwap);

	double GetBinary(BYTE *lpValue, EDataType dt, int IsSwap);
	int    GetBinary(BYTE *lpValue, EDataType dt, int IsSwap, void* toValue);	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>toValue<75>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD>0<EFBFBD><30>ʾ<EFBFBD><CABE><EFBFBD>ɹ<EFBFBD>

	int WriteBinary(double v, EDataType dt, int IsSwap);			//дһ<D0B4><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	int WriteBinary(double *pv, int num, EDataType dt, int IsSwap);

	long FloatToLong(double value);
};

};

using namespace NFile64;

//<2F>ж<EFBFBD><D0B6>Ƿ<EFBFBD><C7B7><EFBFBD>HTTP<54><50>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>
extern bool IsURL(LPCTSTR name, DWORD *pdwServiceType=NULL);

inline long NFile64::CFileSegy::FloatToLong(double value)
{
	if(value<0) return (long)(value-0.5);
	return (long)(value+0.5);
}

#endif // !defined(__FILE64_SEGY__)