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eccodes/src/grib_accessor_class_spd.c

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/*
* Copyright 2005-2019 ECMWF.
*
* This software is licensed under the terms of the Apache Licence Version 2.0
* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
*
* In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
* virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
*/
#include "grib_api_internal.h"
/*
This is used by make_class.pl
START_CLASS_DEF
CLASS = accessor
SUPER = grib_accessor_class_long
IMPLEMENTS = unpack_long;pack_long
IMPLEMENTS = init;dump
IMPLEMENTS = next_offset
IMPLEMENTS = byte_count
IMPLEMENTS = value_count
IMPLEMENTS = byte_offset
IMPLEMENTS = update_size
MEMBERS = const char* numberOfBits
MEMBERS = const char* numberOfElements
END_CLASS_DEF
*/
/* START_CLASS_IMP */
/*
Don't edit anything between START_CLASS_IMP and END_CLASS_IMP
Instead edit values between START_CLASS_DEF and END_CLASS_DEF
or edit "accessor.class" and rerun ./make_class.pl
*/
static int pack_long(grib_accessor*, const long* val,size_t *len);
static int unpack_long(grib_accessor*, long* val,size_t *len);
static long byte_count(grib_accessor*);
static long byte_offset(grib_accessor*);
static long next_offset(grib_accessor*);
static int value_count(grib_accessor*,long*);
static void dump(grib_accessor*, grib_dumper*);
static void init(grib_accessor*,const long, grib_arguments* );
static void init_class(grib_accessor_class*);
static void update_size(grib_accessor*,size_t);
typedef struct grib_accessor_spd {
grib_accessor att;
/* Members defined in gen */
/* Members defined in long */
/* Members defined in spd */
const char* numberOfBits;
const char* numberOfElements;
} grib_accessor_spd;
extern grib_accessor_class* grib_accessor_class_long;
static grib_accessor_class _grib_accessor_class_spd = {
&grib_accessor_class_long, /* super */
"spd", /* name */
sizeof(grib_accessor_spd), /* size */
0, /* inited */
&init_class, /* init_class */
&init, /* init */
0, /* post_init */
0, /* free mem */
&dump, /* describes himself */
&next_offset, /* get length of section */
0, /* get length of string */
&value_count, /* get number of values */
&byte_count, /* get number of bytes */
&byte_offset, /* get offset to bytes */
0, /* get native type */
0, /* get sub_section */
0, /* grib_pack procedures long */
0, /* grib_pack procedures long */
&pack_long, /* grib_pack procedures long */
&unpack_long, /* grib_unpack procedures long */
0, /* grib_pack procedures double */
0, /* grib_unpack procedures double */
0, /* grib_pack procedures string */
0, /* grib_unpack procedures string */
0, /* grib_pack array procedures string */
0, /* grib_unpack array procedures string */
0, /* grib_pack procedures bytes */
0, /* grib_unpack procedures bytes */
0, /* pack_expression */
0, /* notify_change */
&update_size, /* update_size */
0, /* preferred_size */
0, /* resize */
0, /* nearest_smaller_value */
0, /* next accessor */
0, /* compare vs. another accessor */
0, /* unpack only ith value */
0, /* unpack a subarray */
0, /* clear */
0, /* clone accessor */
};
grib_accessor_class* grib_accessor_class_spd = &_grib_accessor_class_spd;
static void init_class(grib_accessor_class* c)
{
c->string_length = (*(c->super))->string_length;
c->get_native_type = (*(c->super))->get_native_type;
c->sub_section = (*(c->super))->sub_section;
c->pack_missing = (*(c->super))->pack_missing;
c->is_missing = (*(c->super))->is_missing;
c->pack_double = (*(c->super))->pack_double;
c->unpack_double = (*(c->super))->unpack_double;
c->pack_string = (*(c->super))->pack_string;
c->unpack_string = (*(c->super))->unpack_string;
c->pack_string_array = (*(c->super))->pack_string_array;
c->unpack_string_array = (*(c->super))->unpack_string_array;
c->pack_bytes = (*(c->super))->pack_bytes;
c->unpack_bytes = (*(c->super))->unpack_bytes;
c->pack_expression = (*(c->super))->pack_expression;
c->notify_change = (*(c->super))->notify_change;
c->preferred_size = (*(c->super))->preferred_size;
c->resize = (*(c->super))->resize;
c->nearest_smaller_value = (*(c->super))->nearest_smaller_value;
c->next = (*(c->super))->next;
c->compare = (*(c->super))->compare;
c->unpack_double_element = (*(c->super))->unpack_double_element;
c->unpack_double_subarray = (*(c->super))->unpack_double_subarray;
c->clear = (*(c->super))->clear;
c->make_clone = (*(c->super))->make_clone;
}
/* END_CLASS_IMP */
static long byte_count(grib_accessor* a)
{
return a->length;
}
static long compute_byte_count(grib_accessor* a){
grib_accessor_spd* self = (grib_accessor_spd*)a;
long numberOfBits;
long numberOfElements;
int ret=0;
ret=grib_get_long(grib_handle_of_accessor(a),self->numberOfBits,&numberOfBits);
if (ret) {
grib_context_log(a->context,GRIB_LOG_ERROR,
"%s unable to get %s to compute size",a->name,self->numberOfBits);
return 0;
}
ret=grib_get_long(grib_handle_of_accessor(a),self->numberOfElements,&numberOfElements);
if (ret) {
grib_context_log(a->context,GRIB_LOG_ERROR,
"%s unable to get %s to compute size",a->name,self->numberOfElements);
return 0;
}
numberOfElements++;
return (numberOfBits*numberOfElements+7)/8;
}
static void init(grib_accessor* a, const long len , grib_arguments* args )
{
grib_accessor_spd* self = (grib_accessor_spd*)a;
int n=0;
self->numberOfBits=grib_arguments_get_name(grib_handle_of_accessor(a),args,n++);
self->numberOfElements=grib_arguments_get_name(grib_handle_of_accessor(a),args,n++);
a->length = compute_byte_count(a);
}
static void dump(grib_accessor* a, grib_dumper* dumper)
{
grib_dump_long(dumper,a,NULL);
}
static int unpack_long(grib_accessor* a, long* val, size_t *len)
{
grib_accessor_spd* self = (grib_accessor_spd*)a;
int i;
int ret=0;
long pos = a->offset*8;
long rlen = 0;
long numberOfBits = 0;
ret=value_count(a,&rlen);
if (ret) return ret;
if(*len < rlen)
{
grib_context_log(a->context, GRIB_LOG_ERROR,
" wrong size (%ld) for %s it contains %d values ",*len, a->name , rlen);
*len = 0;
return GRIB_ARRAY_TOO_SMALL;
}
ret=grib_get_long(grib_handle_of_accessor(a),self->numberOfBits,&numberOfBits);
if (ret) return ret;
for (i=0;i<rlen-1;i++)
val[i] = grib_decode_unsigned_long(grib_handle_of_accessor(a)->buffer->data, &pos, numberOfBits);
val[rlen-1] = grib_decode_signed_longb(grib_handle_of_accessor(a)->buffer->data, &pos, numberOfBits);
*len = rlen;
return GRIB_SUCCESS;
}
static int pack_long(grib_accessor* a, const long* val, size_t *len)
{
grib_accessor_spd* self = (grib_accessor_spd*)a;
int ret = 0;
long off = 0;
long numberOfBits=0;
size_t buflen = 0;
unsigned char *buf = NULL;
unsigned long i = 0;
long rlen = 0;
ret=value_count(a,&rlen);
if (ret) return ret;
if(*len != rlen)
{
ret=grib_set_long(grib_handle_of_accessor(a),self->numberOfElements,(*len)-1);
}
ret=grib_get_long(grib_handle_of_accessor(a),self->numberOfBits,&numberOfBits);
if (ret) return ret;
buflen = compute_byte_count(a);
buf = (unsigned char*)grib_context_malloc_clear(a->context,buflen);
for(i=0; i < rlen-1;i++) {
grib_encode_unsigned_longb(buf, val[i] , &off, numberOfBits);
}
grib_encode_signed_longb(buf, val[rlen-1] , &off, numberOfBits);
grib_buffer_replace(a, buf, buflen,1,1);
grib_context_free(a->context,buf);
*len=rlen;
return ret;
}
static int value_count(grib_accessor* a,long* numberOfElements)
{
grib_accessor_spd* self = (grib_accessor_spd*)a;
int ret;
*numberOfElements=0;
ret=grib_get_long(grib_handle_of_accessor(a),self->numberOfElements,numberOfElements);
if (ret) {
grib_context_log(a->context,GRIB_LOG_ERROR,
"%s unable to get %s to compute size",a->name,self->numberOfElements);
return ret;
}
(*numberOfElements)++;
return ret;
}
static long byte_offset(grib_accessor* a)
{
return a->offset;
}
static void update_size(grib_accessor* a,size_t s)
{
a->length = s;
}
static long next_offset(grib_accessor* a)
{
return byte_offset(a)+a->length;
}
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