1 /*
2 * Copyright 2005-2018 ECMWF.
3 *
4 * This software is licensed under the terms of the Apache Licence Version 2.0
5 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
6 *
7 * In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
8 * virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
9 */
10
11 #include "grib_api_internal.h"
12 /*
13 This is used by make_class.pl
14
15 START_CLASS_DEF
16 CLASS = accessor
17 SUPER = grib_accessor_class_bitmap
18 IMPLEMENTS = pack_double
19 IMPLEMENTS = value_count
20 IMPLEMENTS = init;
21 MEMBERS=const char* numberOfValues
22 END_CLASS_DEF
23
24 */
25
26 /* START_CLASS_IMP */
27
28 /*
29
30 Don't edit anything between START_CLASS_IMP and END_CLASS_IMP
31 Instead edit values between START_CLASS_DEF and END_CLASS_DEF
32 or edit "accessor.class" and rerun ./make_class.pl
33
34 */
35
36 static int pack_double(grib_accessor*, const double* val,size_t *len);
37 static int value_count(grib_accessor*,long*);
38 static void init(grib_accessor*,const long, grib_arguments* );
39 static void init_class(grib_accessor_class*);
40
41 typedef struct grib_accessor_g2bitmap {
42 grib_accessor att;
43 /* Members defined in gen */
44 /* Members defined in bytes */
45 /* Members defined in bitmap */
46 const char* tableReference;
47 const char* missing_value;
48 const char* offsetbsec;
49 const char* sLength;
50 /* Members defined in g2bitmap */
51 const char* numberOfValues;
52 } grib_accessor_g2bitmap;
53
54 extern grib_accessor_class* grib_accessor_class_bitmap;
55
56 static grib_accessor_class _grib_accessor_class_g2bitmap = {
57 &grib_accessor_class_bitmap, /* super */
58 "g2bitmap", /* name */
59 sizeof(grib_accessor_g2bitmap), /* size */
60 0, /* inited */
61 &init_class, /* init_class */
62 &init, /* init */
63 0, /* post_init */
64 0, /* free mem */
65 0, /* describes himself */
66 0, /* get length of section */
67 0, /* get length of string */
68 &value_count, /* get number of values */
69 0, /* get number of bytes */
70 0, /* get offset to bytes */
71 0, /* get native type */
72 0, /* get sub_section */
73 0, /* grib_pack procedures long */
74 0, /* grib_pack procedures long */
75 0, /* grib_pack procedures long */
76 0, /* grib_unpack procedures long */
77 &pack_double, /* grib_pack procedures double */
78 0, /* grib_unpack procedures double */
79 0, /* grib_pack procedures string */
80 0, /* grib_unpack procedures string */
81 0, /* grib_pack procedures bytes */
82 0, /* grib_unpack procedures bytes */
83 0, /* pack_expression */
84 0, /* notify_change */
85 0, /* update_size */
86 0, /* preferred_size */
87 0, /* resize */
88 0, /* nearest_smaller_value */
89 0, /* next accessor */
90 0, /* compare vs. another accessor */
91 0, /* unpack only ith value */
92 0, /* unpack a subarray */
93 0, /* clear */
94 };
95
96
97 grib_accessor_class* grib_accessor_class_g2bitmap = &_grib_accessor_class_g2bitmap;
98
99
init_class(grib_accessor_class * c)100 static void init_class(grib_accessor_class* c)
101 {
102 c->dump = (*(c->super))->dump;
103 c->next_offset = (*(c->super))->next_offset;
104 c->string_length = (*(c->super))->string_length;
105 c->byte_count = (*(c->super))->byte_count;
106 c->byte_offset = (*(c->super))->byte_offset;
107 c->get_native_type = (*(c->super))->get_native_type;
108 c->sub_section = (*(c->super))->sub_section;
109 c->pack_missing = (*(c->super))->pack_missing;
110 c->is_missing = (*(c->super))->is_missing;
111 c->pack_long = (*(c->super))->pack_long;
112 c->unpack_long = (*(c->super))->unpack_long;
113 c->unpack_double = (*(c->super))->unpack_double;
114 c->pack_string = (*(c->super))->pack_string;
115 c->unpack_string = (*(c->super))->unpack_string;
116 c->pack_bytes = (*(c->super))->pack_bytes;
117 c->unpack_bytes = (*(c->super))->unpack_bytes;
118 c->pack_expression = (*(c->super))->pack_expression;
119 c->notify_change = (*(c->super))->notify_change;
120 c->update_size = (*(c->super))->update_size;
121 c->preferred_size = (*(c->super))->preferred_size;
122 c->resize = (*(c->super))->resize;
123 c->nearest_smaller_value = (*(c->super))->nearest_smaller_value;
124 c->next = (*(c->super))->next;
125 c->compare = (*(c->super))->compare;
126 c->unpack_double_element = (*(c->super))->unpack_double_element;
127 c->unpack_double_subarray = (*(c->super))->unpack_double_subarray;
128 c->clear = (*(c->super))->clear;
129 }
130
131 /* END_CLASS_IMP */
132
133
134
init(grib_accessor * a,const long len,grib_arguments * arg)135 static void init(grib_accessor* a, const long len , grib_arguments* arg )
136 {
137
138 grib_accessor_g2bitmap* self = (grib_accessor_g2bitmap*)a;
139
140 self->numberOfValues = grib_arguments_get_name(a->parent->h,arg,4);
141 }
142
143
grib_set_bit_on(unsigned char * p,long * bitp)144 static void grib_set_bit_on( unsigned char* p, long *bitp){
145 unsigned char o = 1;
146 p += (*bitp >> 3);
147 o <<= 7-((*bitp)%8);
148 *p |= o;
149 (*bitp)+=1;
150 }
151
pack_double(grib_accessor * a,const double * val,size_t * len)152 static int pack_double(grib_accessor* a, const double* val,size_t *len){
153 grib_accessor_g2bitmap* self = (grib_accessor_g2bitmap*)a;
154
155 size_t tlen;
156
157 unsigned char* buf = NULL;
158 size_t i;
159 int err = 0;
160 long pos = 0;
161 long bmaplen = 0;
162 double miss_values = 0;
163 tlen = (*len+7)/8;
164
165 if((err = grib_get_double_internal(a->parent->h, self->missing_value, &miss_values))
166 != GRIB_SUCCESS)
167 return err;
168
169 buf = (unsigned char*)grib_context_malloc_clear(a->parent->h->context,tlen);
170 if(!buf) return GRIB_OUT_OF_MEMORY;
171 pos=0;
172 for(i=0;i<*len;i++)
173 {
174 if (val[i] == miss_values)
175 pos++;
176 else{
177 bmaplen++;
178 grib_set_bit_on(buf, &pos);
179 }
180 }
181
182 if((err = grib_set_long_internal(a->parent->h, self->numberOfValues,*len )) != GRIB_SUCCESS) {
183 grib_context_free(a->parent->h->context,buf);
184 return err;
185 }
186
187 grib_buffer_replace(a, buf, tlen,1,1);
188
189 grib_context_free(a->parent->h->context,buf);
190
191 return GRIB_SUCCESS;
192 }
193
194
value_count(grib_accessor * a,long * tlen)195 static int value_count(grib_accessor* a,long* tlen)
196 {
197 grib_accessor_g2bitmap* self = (grib_accessor_g2bitmap*)a;
198 int err;
199 *tlen=0;
200
201 err=grib_get_long_internal(a->parent->h, self->numberOfValues, tlen);
202 return err;
203 }
204
205