mirror of https://github.com/ecmwf/eccodes.git
212 lines
7.2 KiB
C
212 lines
7.2 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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/*
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This is used by make_class.pl
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START_CLASS_DEF
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CLASS = accessor
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SUPER = grib_accessor_class_bitmap
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IMPLEMENTS = pack_double
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IMPLEMENTS = value_count
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IMPLEMENTS = init;
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MEMBERS=const char* numberOfValues
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END_CLASS_DEF
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*/
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/* START_CLASS_IMP */
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/*
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Don't edit anything between START_CLASS_IMP and END_CLASS_IMP
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Instead edit values between START_CLASS_DEF and END_CLASS_DEF
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or edit "accessor.class" and rerun ./make_class.pl
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*/
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static int pack_double(grib_accessor*, const double* val, size_t* len);
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static int value_count(grib_accessor*, long*);
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static void init(grib_accessor*, const long, grib_arguments*);
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static void init_class(grib_accessor_class*);
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typedef struct grib_accessor_g2bitmap
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{
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grib_accessor att;
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/* Members defined in gen */
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/* Members defined in bytes */
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/* Members defined in bitmap */
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const char* tableReference;
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const char* missing_value;
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const char* offsetbsec;
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const char* sLength;
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/* Members defined in g2bitmap */
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const char* numberOfValues;
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} grib_accessor_g2bitmap;
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extern grib_accessor_class* grib_accessor_class_bitmap;
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static grib_accessor_class _grib_accessor_class_g2bitmap = {
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&grib_accessor_class_bitmap, /* super */
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"g2bitmap", /* name */
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sizeof(grib_accessor_g2bitmap), /* size */
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0, /* inited */
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&init_class, /* init_class */
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&init, /* init */
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0, /* post_init */
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0, /* free mem */
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0, /* describes himself */
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0, /* get length of section */
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0, /* get length of string */
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&value_count, /* get number of values */
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0, /* get number of bytes */
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0, /* get offset to bytes */
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0, /* get native type */
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0, /* get sub_section */
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0, /* grib_pack procedures long */
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0, /* grib_pack procedures long */
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0, /* grib_pack procedures long */
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0, /* grib_unpack procedures long */
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&pack_double, /* grib_pack procedures double */
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0, /* grib_unpack procedures double */
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0, /* grib_pack procedures string */
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0, /* grib_unpack procedures string */
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0, /* grib_pack array procedures string */
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0, /* grib_unpack array procedures string */
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0, /* grib_pack procedures bytes */
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0, /* grib_unpack procedures bytes */
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0, /* pack_expression */
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0, /* notify_change */
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0, /* update_size */
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0, /* preferred_size */
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0, /* resize */
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0, /* nearest_smaller_value */
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0, /* next accessor */
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0, /* compare vs. another accessor */
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0, /* unpack only ith value */
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0, /* unpack a given set of elements */
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0, /* unpack a subarray */
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0, /* clear */
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0, /* clone accessor */
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};
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grib_accessor_class* grib_accessor_class_g2bitmap = &_grib_accessor_class_g2bitmap;
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static void init_class(grib_accessor_class* c)
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{
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c->dump = (*(c->super))->dump;
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c->next_offset = (*(c->super))->next_offset;
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c->string_length = (*(c->super))->string_length;
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c->byte_count = (*(c->super))->byte_count;
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c->byte_offset = (*(c->super))->byte_offset;
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c->get_native_type = (*(c->super))->get_native_type;
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c->sub_section = (*(c->super))->sub_section;
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c->pack_missing = (*(c->super))->pack_missing;
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c->is_missing = (*(c->super))->is_missing;
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c->pack_long = (*(c->super))->pack_long;
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c->unpack_long = (*(c->super))->unpack_long;
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c->unpack_double = (*(c->super))->unpack_double;
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c->pack_string = (*(c->super))->pack_string;
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c->unpack_string = (*(c->super))->unpack_string;
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c->pack_string_array = (*(c->super))->pack_string_array;
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c->unpack_string_array = (*(c->super))->unpack_string_array;
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c->pack_bytes = (*(c->super))->pack_bytes;
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c->unpack_bytes = (*(c->super))->unpack_bytes;
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c->pack_expression = (*(c->super))->pack_expression;
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c->notify_change = (*(c->super))->notify_change;
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c->update_size = (*(c->super))->update_size;
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c->preferred_size = (*(c->super))->preferred_size;
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c->resize = (*(c->super))->resize;
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c->nearest_smaller_value = (*(c->super))->nearest_smaller_value;
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c->next = (*(c->super))->next;
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c->compare = (*(c->super))->compare;
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c->unpack_double_element = (*(c->super))->unpack_double_element;
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c->unpack_double_element_set = (*(c->super))->unpack_double_element_set;
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c->unpack_double_subarray = (*(c->super))->unpack_double_subarray;
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c->clear = (*(c->super))->clear;
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c->make_clone = (*(c->super))->make_clone;
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}
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/* END_CLASS_IMP */
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static void init(grib_accessor* a, const long len, grib_arguments* arg)
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{
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grib_accessor_g2bitmap* self = (grib_accessor_g2bitmap*)a;
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self->numberOfValues = grib_arguments_get_name(grib_handle_of_accessor(a), arg, 4);
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}
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static void grib_set_bit_on(unsigned char* p, long* bitp)
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{
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unsigned char o = 1;
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p += (*bitp >> 3);
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o <<= 7 - ((*bitp) % 8);
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*p |= o;
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(*bitp) += 1;
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}
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static int pack_double(grib_accessor* a, const double* val, size_t* len)
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{
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grib_accessor_g2bitmap* self = (grib_accessor_g2bitmap*)a;
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size_t tlen;
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unsigned char* buf = NULL;
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size_t i;
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int err = 0;
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long pos = 0;
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long bmaplen = 0;
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double miss_values = 0;
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tlen = (*len + 7) / 8;
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if ((err = grib_get_double_internal(grib_handle_of_accessor(a), self->missing_value, &miss_values)) != GRIB_SUCCESS)
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return err;
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buf = (unsigned char*)grib_context_malloc_clear(a->context, tlen);
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if (!buf)
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return GRIB_OUT_OF_MEMORY;
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pos = 0;
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for (i = 0; i < *len; i++) {
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if (val[i] == miss_values)
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pos++;
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else {
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bmaplen++;
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grib_set_bit_on(buf, &pos);
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}
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}
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if ((err = grib_set_long_internal(grib_handle_of_accessor(a), self->numberOfValues, *len)) != GRIB_SUCCESS) {
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grib_context_free(a->context, buf);
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return err;
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}
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grib_buffer_replace(a, buf, tlen, 1, 1);
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grib_context_free(a->context, buf);
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return GRIB_SUCCESS;
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}
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static int value_count(grib_accessor* a, long* tlen)
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{
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grib_accessor_g2bitmap* self = (grib_accessor_g2bitmap*)a;
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int err;
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*tlen = 0;
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err = grib_get_long_internal(grib_handle_of_accessor(a), self->numberOfValues, tlen);
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return err;
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}
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