location/manager/location-accuracy.c

   1 /*
   2  * libslp-location
   3  *
   4  * Copyright (c) 2010-2013 Samsung Electronics Co., Ltd. All rights reserved.
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  * http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include "config.h"
  21 #endif
  22
  23 #include "location-accuracy.h"
  24 #include "location-log.h"
  25
  26 GType
  27 location_accuracy_get_type(void)
  28 {
  29         static volatile gsize type_volatile = 0;
  30         if (g_once_init_enter(&type_volatile)) {
  31                 GType type = g_boxed_type_register_static(g_intern_static_string("LocationAccuracy"),
  32                                         (GBoxedCopyFunc) location_accuracy_copy, (GBoxedFreeFunc) location_accuracy_free);
  33
  34                 g_once_init_leave(&type_volatile, type);
  35         }
  36         return type_volatile;
  37 }
  38
  39 EXPORT_API LocationAccuracy *
  40 location_accuracy_new(LocationAccuracyLevel level, gdouble horizontal_accuracy, gdouble vertical_accuracy)
  41 {
  42         LocationAccuracy *accuracy = g_slice_new0(LocationAccuracy);
  43         g_return_val_if_fail(accuracy, NULL);
  44
  45         accuracy->level = level;
  46         accuracy->horizontal_accuracy = horizontal_accuracy;
  47         accuracy->vertical_accuracy = vertical_accuracy;
  48
  49         return accuracy;
  50 }
  51
  52 EXPORT_API void
  53 location_accuracy_free(LocationAccuracy *accuracy)
  54 {
  55         g_return_if_fail(accuracy);
  56         g_slice_free(LocationAccuracy, accuracy);
  57 }
  58
  59 static int
  60 comp_int(int a, int b)
  61 {
  62         if (a < b) return -1;
  63         if (a == b) return 0;
  64         return 1;
  65 }
  66
  67 static int
  68 comp_double_reverse(double a, double b)
  69 {
  70         if (a > b) return -1;
  71         else if (a == b) return 0;
  72         return 1;
  73 }
  74
  75 EXPORT_API int
  76 location_accuracy_level_compare(const LocationAccuracy *accuracy1, const LocationAccuracy *accuracy2)
  77 {
  78         g_return_val_if_fail(accuracy1, -1);
  79         g_return_val_if_fail(accuracy2, 1);
  80
  81         return comp_int(accuracy1->level, accuracy2->level);
  82 }
  83
  84 EXPORT_API int
  85 location_accuracy_compare(const LocationAccuracy *accuracy1, const LocationAccuracy *accuracy2)
  86 {
  87         int ret = 0;
  88         ret = location_accuracy_level_compare(accuracy1, accuracy2);
  89         if (!ret) {
  90                 ret = comp_double_reverse(accuracy1->horizontal_accuracy, accuracy2->horizontal_accuracy);
  91                 if (!ret) return comp_double_reverse(accuracy1->vertical_accuracy, accuracy2->vertical_accuracy);
  92         }
  93         return ret;
  94 }
  95
  96 EXPORT_API LocationAccuracy *
  97 location_accuracy_copy(const LocationAccuracy *accuracy)
  98 {
  99         g_return_val_if_fail(accuracy, NULL);
 100         return location_accuracy_new(accuracy->level, accuracy->horizontal_accuracy, accuracy->vertical_accuracy);
 101 }