00001 /*=======================================================================
00002  *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.),            ***
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00007  ***  WRITTEN AUTHORIZATION OF FEI S.A.S.                                           ***
00008  ***                                                                                ***
00009  ***                        RESTRICTED RIGHTS LEGEND                                ***
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00015  ***                                                                                ***
00016  ***                   COPYRIGHT (C) 1996-2014 BY FEI S.A.S,                        ***
00017  ***                        BORDEAUX, FRANCE                                        ***
00018  ***                      ALL RIGHTS RESERVED                                       ***
00019 **=======================================================================*/
00020 /*=======================================================================
00021 ** Author      : T. DUFOUR (MMM yyyy)
00022 **=======================================================================*/
00023 
00024 #ifndef  _SO_VRSEGY_READER_
00025 #define  _SO_VRSEGY_READER_
00026 
00027 #include <VolumeViz/readers/SoVolumeReader.h>
00028 
00029 struct SoVRSegyTraceIdHeader;
00030 
00044 class  SoVRSegyTraceHeaderBytePosition
00045 {
00046  public:
00050   SoVRSegyTraceHeaderBytePosition();
00051 
00055   enum TraceAttribute {
00056     SEGY_TRACL,  // Trace sequence number within line
00057     SEGY_TRACR,  // Trace sequence number within reel
00058     SEGY_FLDR,   // Field record number
00059     SEGY_TRACF,  // Trace number within field record
00060     SEGY_EP,     // Energy source point number
00061     SEGY_CDP,    // CDP ensemble number
00062     SEGY_CDPT,   // Trace number within CDP ensemble
00063     SEGY_TRID,   // Trace identification code
00064     SEGY_NVS,    // Number of vertically summed traces
00065     SEGY_NHS,    // Number of horizontally summed traces
00066     SEGY_DUSE,   // Data use
00067     SEGY_OFFSET, // Distance from source point to receiver group
00068     SEGY_GELEV,  // Receiver group elevation from sea level
00069     SEGY_SELEV,  // Source elevation from sea level
00070     SEGY_SDEPTH, // Source depth (positive)
00071     SEGY_GDEL,   // Datum elevation at receiver group
00072     SEGY_SDEL,   // Datum elevation at source
00073     SEGY_SWDEP,  // Water depth at source
00074     SEGY_GWDEP,  // Water depth at receiver group
00075     SEGY_SCALEL, // Scale factor for previous 7 entries
00076     SEGY_SCALCO, // Scale factor for next 4 entries
00077     SEGY_SX,     // X source coordinate
00078     SEGY_SY,     // Y source coordinate
00079     SEGY_GX,     // X group coordinate
00080     SEGY_GY,     // Y group coordinate
00081     SEGY_COUNIT, // Coordinate units code
00082     SEGY_WEVEL,  // Weathering velocity
00083     SEGY_SWEVEL, // Subweathering velocity
00084     SEGY_SUT,    // Uphole time at source
00085     SEGY_GUT,    // Uphole time at receiver group
00086     SEGY_SSTAT,  // Source static correction
00087     SEGY_GSTAT,  // Group static correction
00088     SEGY_TSTAT,  // Total static applied
00089     SEGY_LAGA,   // Lag time A
00090     SEGY_LAGB,   // Lag time B
00091     SEGY_DELRT,  // Delay Record Time
00092     SEGY_MUTS,   // Mute time--start
00093     SEGY_MUTE,   // Mute time--end
00094     SEGY_NS,     // Number of samples in this trace
00095     SEGY_DT,     // Sample interval, in micro-seconds
00096     SEGY_GAIN,   // Gain type of field instruments code
00097     SEGY_IGC,    // Instrument gain constant
00098     SEGY_IGI,    // Instrument early or initial gain
00099     SEGY_CORR,   // Correlated
00100     SEGY_SFS,    // Sweep frequency at start
00101     SEGY_SFE,    // Sweep frequency at end
00102     SEGY_SLEN,   // Sweep length in ms
00103     SEGY_STYP,   // Sweep type code
00104     SEGY_STAS,   // Sweep trace length at start
00105     SEGY_STAE,   // Sweep trace length at end
00106     SEGY_TATYP,  // Taper type
00107     SEGY_AFILF,  // Alias filter frequency
00108     SEGY_AFILS,  // Alias filter slope
00109     SEGY_NOFILF, // Notch filter frequency 
00110     SEGY_NOFILS, // Notch filter slope
00111     SEGY_LCF,    // Low cut frequency
00112     SEGY_HCF,    // High cut frequncy
00113     SEGY_LCS,    // Low cut slope
00114     SEGY_HCS,    // High cut slope
00115     SEGY_YEAR,   // Year data recorded
00116     SEGY_DAY,    // Day of year
00117     SEGY_HOUR,   // Hour of day
00118     SEGY_MINUTE, // Minute of hour
00119     SEGY_SEC,    // Second of minute
00120     SEGY_TIMBAS, // Time basis code
00121     SEGY_TRWF,   // Trace weighting factor
00122     SEGY_GRNORS, // Geophone group number of roll switch position one
00123     SEGY_GRNOFR, // Geophone group number of trace one within original field record
00124     SEGY_GRNLOF, // Geophone group number of last trace within original field record
00125     SEGY_GAPS,   // Gap size
00126     SEGY_OTRAV,  // Overtravel taper code
00127     SEGY_CDPX,
00128     SEGY_CDPY,
00129     SEGY_INLINENUMBER,
00130     SEGY_CROSSLINENUMBER,
00131     SEGY_SHOTPOINTNUMBER,
00132     SEGY_SHOTPOINTSCALE,
00133     SEGY_TVMU,   // Trace value measurement unit
00134     SEGY_TRANSDUCTIONCONSTANTM,  // Transduction Constant Mantissa
00135     SEGY_TRANSDUCTIONCONSTANTP,  // Transduction Constant Power of ten
00136     SEGY_TRANSDUCTIONUNITS,
00137     SEGY_DTID,   // Device/Trace Identifier
00138     SEGY_TSCALE,
00139 
00140     SEGY_NUM_FIELDS,           // To count the number of fields
00141     SEGY_CROSSLINE = SEGY_CDP, // Synonym for the crossline position
00142     SEGY_INLINE = SEGY_TRACR   // Synonym for the inline position
00143   };
00144 
00148   enum TraceByteFormat {
00150       SEGY_INTEGER8_FORMAT,  
00152       SEGY_INTEGER16_FORMAT,
00154       SEGY_INTEGER32_FORMAT,
00156       SEGY_IBM_FLOAT_FORMAT,
00158       SEGY_IEEE_FLOAT_FORMAT
00159   };
00160 
00167   void    setBytePosition( TraceAttribute attr, uint8_t position );
00168   uint8_t getBytePosition( TraceAttribute attr ) const;
00169 
00174   uint8_t getByteLength( TraceAttribute attr ) const;
00175 
00183   void            setByteFormat( TraceAttribute attr, TraceByteFormat format );
00184   TraceByteFormat getByteFormat( TraceAttribute attr ) const;
00185 
00191   int getFieldValue( TraceAttribute attr, const SoVRSegyTraceIdHeader &trHdr ) const;
00192 
00193  private:
00194   void resetObject();
00195 
00196  private:
00197   uint8_t         m_BytePos[SEGY_NUM_FIELDS];
00198   TraceByteFormat m_ByteFmt[SEGY_NUM_FIELDS];
00199 };
00200 
00214 struct SoVRSegyFileHeader 
00215 {
00216 
00217  public:
00219   int jobid;
00221   int lino;
00223   int reno;
00225   short ntrpr;
00227   short nart;
00229   unsigned short hdt;
00231   unsigned short dto;
00233   unsigned short hns;
00235   unsigned short nso;
00246   short format;
00248   short fold;
00260   short tsort;
00265   short vscode;
00267   short hsfs;
00269   short hsfe;
00271   short hslen;
00277   short hstyp;
00279   short schn;
00282   short hstas;
00285   short hstae;
00290   short htatyp;
00294   short hcorr;
00299   short bgrcv;
00305   short rcvm;
00309   short mfeet;
00315   short polyt;
00331   short vpol;
00333   short hunass1[120];
00335   unsigned short formatRevisionNumber;
00342   short fixedLengthTraceFlag;
00345   short numTextHeaderExt;
00347   short hunass2[47];
00348 };
00349 
00350 
00364 struct SoVRSegyTraceIdHeader
00365 {
00366 
00367  public:
00369   int tracl;
00371   int tracr;
00373   int fldr;
00375   int tracf;
00377   int ep;
00379   int cdp;
00381   int cdpt;
00441   short trid;
00443   short nvs;
00445   short nhs;
00449   short duse;
00452   int offset;
00454   int gelev;
00456   int selev;
00458   int sdepth;
00460   int gdel;
00462   int sdel;
00464   int swdep;
00466   int gwdep;
00469   short scalel;
00472   short scalco;
00474   int  sx;
00476   int  sy;
00478   int  gx;
00480   int  gy;
00489   short counit;
00491   short wevel;
00493   short swevel;
00495   short sut;
00497   short gut;
00499   short sstat;
00501   short gstat;
00503   short tstat;
00511   short laga;
00515   short lagb;
00521   short delrt;
00523   short muts;
00525   short mute;
00527   unsigned short ns;
00529   unsigned short dt;
00535   short gain;
00537   short igc;
00539   short igi;
00543   short corr;
00545   short sfs;
00547   short sfe;
00549   short slen;
00554   short styp;
00556   short stas;
00558   short stae;
00560   short tatyp;
00562   short afilf;
00564   short afils;
00566   short nofilf;
00568   short nofils;
00570   short lcf;
00572   short hcf;
00574   short lcs;
00576   short hcs;
00578   short year;
00580   short day;
00582   short hour;
00584   short minute;
00586   short sec;
00592   short timbas;
00594   short trwf;
00596   short grnors;
00598   short grnofr;
00600   short grnlof;
00602   short gaps;
00606   short otrav;
00608   int cdpX;
00610   int cdpY;
00612   int inlineNumber;
00614   int crosslineNumber;
00616   int shotPointNumber;
00618   short shotPointScale;
00630   short tvmu;
00632   int transductionConstantM;
00634   short transductionConstantP;
00646   short transductionUnits;
00648   short dtid;
00651   short tscale;
00653   short unass[12];
00654 };
00655 
00656 #endif // _SO_VRSEGY_READER_
00657 
00658 
00659
VolumeViz/readers/SoVRSegyReader.h
