mirror of https://github.com/ecmwf/eccodes.git
292 lines
13 KiB
C++
292 lines
13 KiB
C++
/*
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* (C) Copyright 2005- ECMWF.
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*
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* This software is licensed under the terms of the Apache Licence Version 2.0
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* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
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*
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* In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
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* virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
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*/
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#include "grib_api_internal.h"
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#ifdef HAVE_LIBEMOS
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#define flong int
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#define NUMBER(a) (sizeof(a)/sizeof(a[0]))
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#define BUFF_SIZE 50000000
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extern void grsrnd_(flong*);
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extern void gribex_(flong*, flong*, flong*, double*, flong*, double*, flong*, double*,
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flong*, char *, flong*, flong*, const char*, flong*,flong );
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static int cgribex(
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flong miss,
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flong ksec0[],flong ksec1[],
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flong ksec2[],double rsec2[],
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flong ksec3[],double rsec3[],
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flong ksec4[],double rsec4[],
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flong sec4len,
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char *buffer,
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flong *buflen,
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char *op)
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{
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flong ret = 1;
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flong in_bufsize = (*buflen) / sizeof(flong);
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flong out_bufsize = in_bufsize;
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flong round = 0;
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rsec3[1] = miss,
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ksec3[1] = miss,
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grsrnd_(&round); /* no rounding !!! */
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gribex_(ksec0, ksec1, ksec2, rsec2, ksec3, rsec3, ksec4, rsec4,
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&sec4len, buffer, &in_bufsize, &out_bufsize, op, &ret,1 );
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*buflen = out_bufsize * sizeof(flong);
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return ret;
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}
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struct { int code; char *message; } gribex_errors[] = {
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{201 ," An invalid coding/decoding option was requested.",},
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{202 ,"The number of bits per data value exceeds a word length.",},
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{203 ,"Missing data indicated and data field contains non-zero values.",},
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{204 ,"Number of bits per data value is invalid.",},
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{205 ,"Number of bits per data value is same as the number of bits per computer word.",},
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{301 ,"Error in encoding or decoding the letters GRIB.",},
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{302 ,"Error decoding the length of the GRIB message.",},
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{303 ,"Error encoding or decoding the GRIB edition number.",},
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{304 ,"Error decoding octets 22 and 23, experimental edition check.",},
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{305 ,"Input data is not GRIB or pseudo-GRIB.",},
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{401 ,"Error encoding or decoding the length of section 1.",},
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{402 ,"Error encoding or decoding the parameter version number.",},
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{403 ,"Error encoding or decoding six header fields in section 1, from 'identification of centre' to 'indicator of type of level'.",},
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{404 ,"Error encoding or decoding height, pressure, etc of levels.",},
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{405 ,"Error encoding or decoding six fields in section 1, from 'year of century' to 'indicator of unit of time range'.",},
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{406 ,"Error encoding or decoding period of time.",},
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{407 ,"Error encoding or decoding time range indicator.",},
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{408 ,"Error encoding or decoding number averaged.",},
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{409 ,"Error encoding or decoding number missing from averages etc.",},
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{410 ,"Error encoding or decoding century of data or reserved field.",},
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{411 ,"Error encoding or decoding units decimal scale factor.",},
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{412 ,"Error encoding or decoding ECMWF local data.",},
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{413 ,"Grib edition not handled.",},
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{499 ,"Error found when checking values for section 1 against expected valid GRIB values.",},
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{501 ,"Error encoding or decoding length of section 2.",},
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{502 ,"Error encoding or decoding number of vertical coordinate parameters.",},
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{503 ,"Error encoding or decoding location of list of vertical coordinate parameters or list of numbers of points.",},
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{504 ,"Error encoding or decoding data representation type.",},
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{505 ,"Error encoding or decoding number of points aflong a parallel or meridian.",},
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{505 ,"Error encoding or decoding number of points aflong a parallel or meridian.",},
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{506 ,"Error encoding or decoding latitude or flongitude of the first grid point.",},
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{507 ,"Error encoding or decoding the components flag.",},
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{508 ,"Error encoding or decoding latitude or flongitude of the last grid point.",},
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{509 ,"Error encoding or decoding the i direction increment.",},
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{510 ,"Error encoding or decoding the number of parallels between the pole and the Equator.",},
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{511 ,"Error encoding or decoding scanning mode flags.",},
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{513 ,"Error encoding or decoding the j direction increment.",},
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{514 ,"Error encoding or decoding J,K,M pentagonal resolution parameters.",},
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{515 ,"Error encoding or decoding representation type or mode.",},
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{517 ,"Error encoding or decoding latitude or flongitude of southern pole.",},
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{518 ,"Error encoding or decoding angle of rotation.",},
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{519 ,"Error encoding or decoding latitude or flongitude of pole of stretching.",},
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{520 ,"Error encoding or decoding stretching factor.",},
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{521 ,"Error encoding or decoding vertical coordinate parameters.",},
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{522 ,"Error encoding or decoding list of numbers of points.",},
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{523 ,"Error encoding or decoding number of points aflong X or Y axis.",},
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{524 ,"Error encoding or decoding X or Y axis grid lengths.",},
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{525 ,"Error encoding or decoding the projection centre flag.",},
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{526 ,"Error encoding or decoding the latitude or flongitude of sub-satellite point.",},
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{527 ,"Error encoding or decoding the diameter of the Earth in X or Y direction.",},
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{528 ,"Error encoding or decoding the X or Y coordinate of the sub-satellite point.",},
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{529 ,"Error encoding or decoding the orientation of the grid or camera angle.",},
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{530 ,"Error encoding or decoding the X or Y coordinate of the origin of sector.",},
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{531 ,"Error inserting/extracting Latin1 or Latin2 of secants points.",},
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{532 ,"Error inserting/extracting latitude/flongitude of southern pole.",},
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{540 ,"Error encoding gaussian grid section 2.",},
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{541 ,"Error decoding gaussian grid section 2.",},
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{542 ,"Error encoding lat/flong grid section 2.",},
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{543 ,"Error decoding lat/flong grid section .",},
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{544 ,"Error encoding spectral section 2.",},
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{545 ,"Error decoding spectral section 2.",},
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{546 ,"Error encoding space view section 2, or error encoding ECMWF ocean section 2.",},
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{547 ,"Error decoding space view section 2, or error decoding ECMWF ocean section 2.",},
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{598 ,"Representation type not handled.",},
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{598 ,"Representation type not handled.",},
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{599 ,"Error found when checking values for section 2 against expected valid GRIB values.",},
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{601 ,"Error encoding or decoding length of section 3.",},
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{602 ,"Error encoding or decoding the number of unused bits at the end of section 3.",},
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{603 ,"Error encoding or decoding the bitmap reference table.",},
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{604 ,"Error encoding or decoding the primary bitmap.",},
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{605 ,"Unable to convert quasi-regular (reduced) gaussian grid with a bitmap.",},
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{699 ,"Error found when checking values for section 3 against expected valid GRIB values.",},
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{701 ,"Error encoding or decoding the length of section 4.",},
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{703 ,"Second-order packing implies additional flags.",},
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{704 ,"Function A or B invalid for second-order packed field (grid-point).",},
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{705 ,"Only simple packing handled for grid data.",},
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{706 ,"Error in decoding the section 4 flag field.",},
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{707 ,"Error encoding or decoding the field scale factor.",},
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{708 ,"Error encoding or decoding the field reference value.",},
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{709 ,"Error encoding or decoding the number of bits per data value.",},
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{710 ,"Output array too small.",},
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{711 ,"Error encoding or decoding a REAL coefficient.",},
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{712 ,"Error encoding or decoding data values.",},
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{713 ,"Error encoding or decoding the 'flag and unused bits' field.",},
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{714 ,"Decoding option is 'X' and number of values is illegal.",},
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{715 ,"Decoding option is 'X' and scanning mode is not north to south and west to east.",},
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{716 ,"Decoding option is 'X' and field is not a gaussian or latitude/flongitude grid.",},
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{717 ,"Decoding option is 'X' and a bitmap is encountered.",},
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{720 ,"Error encoding or decoding the octet number at which packed data begins.",},
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{721 ,"Error encoding or decoding the 'extended flag' field.",},
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{722 ,"Error encoding or decoding the first or second dimension of a matrix.",},
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{723 ,"Error encoding or decoding six fields, from first dimension coordinate value onwards.",},
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{724 ,"Error encoding or decoding first or second dimension coefficients.",},
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{725 ,"Error encoding a secondary bitmap.",},
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{726 ,"Output array is not big enough to allow expansion using bitmap(s), or constant (0-bit) field without section 2 not supported.",},
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{727 ,"Invalid predefined bitmap number given, or constant (0-bit) spectral field not supported.",},
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{728 ,"Open of predefined bitmap failed, or constant (0-bit) field function G or B not supported.",},
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{729 ,"Problem reading a predefined bitmap size, or output array is not big enough to allow expansion using bitmaps.",},
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{730 ,"Problem allocating memory for a predefined bitmap.",},
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{731 ,"Problem reading the number of non-missing points in a predefined bitmap.",},
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{732 ,"Problem reading a predefined bitmap.",},
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{733 ,"Problem closing a predefined bitmap file.",},
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{734 ,"Error inserting padding zeroes at end of section 4.",},
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{796 ,"Error extracting pointer to packed data.",},
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{797 ,"Error extracting sub-set truncation or constant (0-bit) field function G or B not supported.",},
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{798 ,"Function is X but no section 2 included.",},
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{799 ,"Error found when checking values for section 4 against expected valid GRIB values.",},
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{800 ,"Error encoding or decoding the 7777 group.",},
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{801 ,"Error inserting or extracting the 7777 group.",},
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{802 ,"Error encoding or decoding the length of the GRIB message.",},
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{805 ,"End of message 7777 group not found.",},
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{806 ,"Error in decoding a primary or secondary bitmap.",},
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{807 ,"Inconsistent values specified for complex packing in KSEC2(6) and KSEC4(4).",},
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{808 ,"Error converting quasi-regular (reduced) gaussian grid to regular.",},
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{809 ,"Error padding unused part of GRIB to zero.",},
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{810 ,"Error inserting dummy zero, or error padding GRIB to multiple of 120.",},
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{811 ,"Unable to handle secondary bitmaps for J option.",},
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};
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void gribex_check(int err) {
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int i=0;
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if(err > 0) {
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char *e = "unknown";
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for(i = 0; i < NUMBER(gribex_errors); i++)
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if(gribex_errors[i].code == err)
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e = gribex_errors[i].message;
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fprintf(stderr,"GRIBEX error %d: %s\n",err,e);
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exit(err);
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}
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}
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#define ISECTION_0 2
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#define ISECTION_1 1024 /* beware of for ocean data */
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#define ISECTION_2 3000
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#define ISECTION_3 2
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#define ISECTION_4 512
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#define RSECTION_2 512
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#define RSECTION_3 2
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#define RSECTION_4 1
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#define STRMAXLEN 300
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void usage(char* prog) {
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printf("usage: %s [-a outfile | -w outfile ] grib_file repetitions bitsPerValue\n",prog);
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exit(1);
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}
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int main(int argc, char* argv[]) {
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grib_handle *h=NULL;
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grib_context* c=NULL;
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unsigned char buffer[BUFF_SIZE];
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long i;
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FILE* fin=NULL;
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char* finname;
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double *values=NULL;
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double gvalues[10000000]={0,};
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size_t nvalues=0;
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int count,e=0;
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size_t length;
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int sec4len;
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flong ksec0[ISECTION_0];
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flong ksec1[ISECTION_1];
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flong ksec2[ISECTION_2];
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flong ksec3[ISECTION_3];
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flong ksec4[ISECTION_4];
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flong miss=9999;
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const void *msg;
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flong gribex_msg_len=0;
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double rsec2[RSECTION_2];
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double rsec3[RSECTION_3];
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if (argc != 2 ) usage(argv[0]);
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finname=argv[1];
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fin = fopen(finname,"rb");
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if(!fin) {perror(finname);exit(1);}
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c=grib_context_get_default();
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length=BUFF_SIZE;
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count=0;
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/* GRIB_CHECK(grib_read_any_from_file(c,fin,buffer,&length),0); */
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while (grib_read_any_from_file(c,fin,buffer,&length)==GRIB_SUCCESS) {
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e=0;
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printf("%d\n",++count);
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h=grib_handle_new_from_message_copy(c,buffer,length);
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GRIB_CHECK(e,0);
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GRIB_CHECK(grib_get_size(h,"values",&nvalues),0);
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values=(double*)grib_context_malloc_clear(c,sizeof(double)*nvalues);
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if (!values) { printf("%s: memory allocation error\n",argv[0]); exit(1); }
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/* decode values grib_api */
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GRIB_CHECK(grib_get_double_array(h,"values",values,&nvalues),0);
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sec4len=nvalues+100000;
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/* decode with gribex*/
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msg=(char*)buffer;
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gribex_msg_len=length;
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sec4len=nvalues+100000;
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gribex_check(cgribex( miss, ksec0,ksec1,ksec2,rsec2,ksec3,rsec3,
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ksec4,gvalues,sec4len, (char*)msg,&gribex_msg_len,"D"));
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for (i=0;i<nvalues;i++) {
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if (gvalues[i] != values[i]) {
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printf("ERROR gribex[%ld]=%.20e grib_api[%ld]=%.20e \n",i,gvalues[i],i,values[i]);
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exit(1);
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}
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}
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grib_handle_delete(h);
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grib_context_free(c,values);
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length=BUFF_SIZE;
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}
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fclose(fin);
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return 0;
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}
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#else
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int main(int argc,char* argv[]) {
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return 0;
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}
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#endif
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