kev/Drawer/SSBase/MxnFormat/SegdReader.h

/**
*	@file		SegdReader.h
*	@brief		SegD<EFBFBD><EFBFBD>ʽ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD>
*	@author		
*	@date		2011-11-15
*/

#pragma once
#include "SegDHeader.h"
#include "SeisLineData.h"

namespace NSegD
{

typedef struct stuSegDFileHeader
{
	unsigned short	ver;				//<2F>汾<EFBFBD>ţ<EFBFBD>1=<3D>汾1.0<EFBFBD><EFBFBD>2=<3D>汾2.0<EFBFBD><EFBFBD>3=<3D>汾3.0(Ŀǰ<C4BF><C7B0>֧<EFBFBD><D6A7>3.0<EFBFBD><EFBFBD>)

	int				fileNumber;			//<2F>ļ<EFBFBD><C4BC><EFBFBD>

	unsigned short	formatCode;			//<2F><>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD>
	//ʱ<><CAB1>
		//0x0015  20 bit binary multiplexed 
		//0x0022  8 bit quaternary multiplexed 
		//0x0024  16 bit quaternary multiplexed 
		//0x0036  24 bit 2's compliment integer multiplexed 
		//0x0038  32 bit 2's compliment integer multiplexed 
		//0x0042  8 bit hexadecimal multiplexed 
		//0x0044  16 bit hexadecimal multiplexed 
		//0x0048  32 bit hexadecimal multiplexed 
		//0x0058  32 bit IEEE multiplexed 
	//<2F><><EFBFBD><EFBFBD>
		//0x8015  20 bit binary demultiplexed 
		//0x8022  8 bit quaternary demultiplexed 
		//0x8024  16 bit quaternary demultiplexed 
		//0x8036  24 bit 2's compliment integer demultiplexed 
		//0x8038  32 bit 2's compliment integer demultiplexed 
		//0x8042  8 bit hexadecimal demultiplexed 
		//0x8044  16 bit hexadecimal demultiplexed 
		//0x8048  32 bit hexadecimal demultiplexed 
		//0x8058  32 bit IEEE demultiplexed 
	//<2F><>Ч
		//0200  Illegal, do not use 
		//0000  Illegal, do not use

	unsigned short	scanInterval;			//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	int				recordLength;			//<2F><>¼<EFBFBD><C2BC><EFBFBD><EFBFBD>

	//ͨ<><CDA8>һ<EFBFBD>μ<EFBFBD>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD>еļ<D0B5>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD>Ͳɼ<CDB2><C9BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Dz<EFBFBD><C7B2>仯<EFBFBD>ģ<EFBFBD><C4A3><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><31>ɨ<EFBFBD><C9A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	unsigned short	scanTypesNum;			//ɨ<><C9A8><EFBFBD><EFBFBD><EFBFBD>͸<EFBFBD><CDB8><EFBFBD>
	unsigned short	channelNumPerScanType;	//һ<><D2BB>ɨ<EFBFBD><C9A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڰ<EFBFBD><DAB0><EFBFBD><EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD><EFBFBD><EFBFBD>
	int				totalChannelsNumber;    /* total number of channels */

	unsigned short	sampleSkewNum;			//<2F><><EFBFBD><EFBFBD>ʱƫͷ<C6AB>θ<EFBFBD><CEB8><EFBFBD>

	unsigned short	trailerNum;				/* 13-14 General trailer number */

	unsigned short	generalHeaderNum;		/* 12  Number blocks in general header ͷ<>ο<EFBFBD><CEBF>ĸ<EFBFBD><C4B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>ͨ<EFBFBD><CDA8>ͷ<EFBFBD>ο<EFBFBD><CEBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2<EFBFBD><32>*/
	unsigned short	extendedHeaderNum;		//<2F><>չͷ<D5B9>θ<EFBFBD><CEB8><EFBFBD>
	int				externalHeaderNum;		//<2F>ⲿͷ<E2B2BF><CDB7><EFBFBD><EFBFBD>

	//ͷ<>鳤<EFBFBD><E9B3A4>
	//( generalHeaderNum + scanTypesNum*(channelNumPerScanType+sampleSkewNum) + extendedHeaderNum + externalHeaderNum + 1 ) * 32

	unsigned short	year;		//Year (0-99)
	unsigned short	day;		//Day  (1-366)
	unsigned short	hour;		/* 14    Hour of day(0-23) */
	unsigned short	minute;     /* 15    Minute of hour(0-59) */
	unsigned short	second;     /* 16    Second of minute(0-59) */
	
	//<2F><><EFBFBD><EFBFBD>ʱ<EFBFBD>򱣴淽ʽ<E6B7BD><CABD>Ч////////////////////////////////////////////////
	//ÿ<><C3BF><EFBFBD><EFBFBD>ɨ<EFBFBD><C9A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊsb + 2^sbx
	unsigned short sb;		/* 25    Number of scans per block */
	unsigned short sbx;		/* 24    sb<73><62>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Χ0-15 */
	int	scanBytes;			//ÿ<><C3BF>ɨ<EFBFBD><C9A8><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>
} SEGD_FILE_HEADER;

typedef struct stuSegDTraceHeader
{
	int				fileNumber;			//<2F>ļ<EFBFBD><C4BC><EFBFBD>
	unsigned short	scanType;			//ɨ<><C9A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	unsigned short	channelSetNum;		//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	unsigned short	traceNumber;		/* 05-06 trace number		<09><><EFBFBD><EFBFBD>		*/
	unsigned short	extendHeaderNum;	/* 10    trace header extensions <20><>չ<EFBFBD><D5B9>ͷ<EFBFBD>ĸ<EFBFBD><C4B8><EFBFBD> */

    unsigned short	sampleSkew;			/* 11    sample skew of the first sample of the trace. 
										 It is a part of the fractional part of the base scan interval. 
										 Res :1/256 scan interval */

	int				samplesNumber;		/* ÿ<><C3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/

} SEGD_TRACE_HEADER;

class AFX_EXT_CLASS CSegdReader
{
public:
	CSegdReader(void);
	~CSegdReader(void);

	bool	Read(LPCTSTR lpszFileName);
	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CSegdFileHeader<65><72><EFBFBD><EFBFBD>
	bool	ReadFileHeader(CFileSegy& fr);		//<2F><>ȡ<EFBFBD>ļ<EFBFBD>ͷ<EFBFBD><CDB7>Ϣ

	bool	ReadOneRecordBlock(CFileSegy& fr);	//<2F><>ȡһ<C8A1><D2BB><EFBFBD><EFBFBD>¼<EFBFBD><C2BC>
	bool	ReadTapeLabel(CFileSegy& fr);		//<2F><>ȡ<EFBFBD>汾2<E6B1BE>ĴŴ<C4B4>ͷ<EFBFBD><CDB7>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ð汾<C3B0><E6B1BE>
	bool	ReadTraceHeader(CFileSegy& fr);		//<2F><>ȡ<EFBFBD><C8A1>ͷ
	bool	ReadDataTrace(CFileSegy& fr, CSeisTraceData& td);		//<2F><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

	SEGD_FILE_HEADER&  GetFileHeader()	{ return m_fileHeader; }
	SEGD_TRACE_HEADER& GetTraceHeader()	{ return m_traceHeader; }
	bool	IsGain() { return m_bGain; }

protected:
	bool	InitializeTraceHeader(SEGD_DEMUX_TRACE_HEADER& traceHeader);
	bool	InitializeFileHeader(SEGD_GENERAL_HEADER_1& header1, SEGD_GENERAL_HEADER_2& header2);
	bool	InitializeFileHeader(SEGD_GENERAL_HEADER_1& header1);

	CSeisLineData			m_tracesData;		//<2F><><EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD>
	SEGD_FILE_HEADER	m_fileHeader;
	SEGD_TRACE_HEADER	m_traceHeader;
	bool				m_bGain;			/* flag for applying gain <20>Ƿ<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/

	void ClearChannelHeader(void);
	SEGD_CHANNEL_SET_HEADER* GetChannelSetHeader(int i, int j);
	float* GetGain(int i, int j);

	int GetBytesLength(int nSampleNum, int code);

private:
	//<2F>ļ<EFBFBD>ͷ
	SEGD_TAPE_LABEL				m_stuTapeLabel;		//<2F>汾2 <20><>ʽ<EFBFBD>ĴŴ<C4B4><C5B4><EFBFBD>ǩ<EFBFBD><C7A9><EFBFBD><EFBFBD>
	SEGD_GENERAL_HEADER_1		m_stuGHeader1;		//ͷ<>ο<EFBFBD>1
	SEGD_GENERAL_HEADER_2		m_stuGHeader2;		//ͷ<>ο<EFBFBD>2
	SEGD_GEN_HEAD_SN358			m_stuGHeaderSN358;	
	SEGD_GENERAL_HEADER_N		m_stuGHeaderN;		//<2F><>չͷ<D5B9><CDB7>
	SEGD_SAMPLE_SKEW			m_stuSampleSkew;	//<2F><><EFBFBD><EFBFBD>ʱƫ
	SEGD_EXTENDED_HEADER		m_stuExtendedHeader;//<2F><>չͷ<D5B9><CDB7>
	SEGD_EXTERNAL_HEADER		m_stuExternalHeader;//<2F>ⲿͷ<E2B2BF><CDB7>

	SEGD_CHANNEL_SET_HEADER*	m_pChannelHeader;	//ɨ<><C9A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7>,array[scanTypesNum][channelNumPerScanType]
	float*						m_pGain;			//<2F><><EFBFBD><EFBFBD>,array[scanTypesNum][channelNumPerScanType] for escaling exponent

	//<2F><>ͷ
	SEGD_DEMUX_TRACE_HEADER	m_stuTraceHeader;		//<2F><>ͷ
	SEGD_TRACE_HEADER_EXT	m_stuTraceHeaderExt;	//<2F><>ͷ<EFBFBD><CDB7>չ

	/* repair byte swap of MP gain */
	int imp0; 
	int imp1;
	int icvt2s;			/* Sercel glitch flag */

protected:
	bool Read(CFileSegy& fr, SEGD_GENERAL_HEADER_1& header1);

	void F8015_to_float (char *from, float* to, int len, int cvt2s);
	void F8022_to_float (char *from, float* to, int len, int cvt2s);
	void F8024_to_float (char *from, float* to, int len, int cvt2s);
	void F8036_to_float (unsigned char *from, float* to, int len);
	void F8038_to_float (char *from, float* to, int len);
	void F8042_to_float (char *from, float* to, int len);
	void F8044_to_float (char *from, float* to, int len);
	void F8048_to_float (char *from, float* to, int len);
	void F8058_to_float (char *from, float* to, int len);
	
	int   BCD(unsigned char * ptr , int begin , int n);
	short GET_S(char* from);
	char  GET_C(char *f);
	unsigned int GET_UC(unsigned char *f)	{ return f[0]; }
	unsigned short GET_US(unsigned char *f);
};

}//namespace