location/manager/location-accuracy.c

   1 /*
   2  * libslp-location
   3  *
   4  * Copyright (c) 2010-2013 Samsung Electronics Co., Ltd. All rights reserved.
   5  *
   6  * Contact: Youngae Kang <youngae.kang@samsung.com>, Minjune Kim <sena06.kim@samsung.com>
   7  *                      Genie Kim <daejins.kim@samsung.com>
   8  *
   9  * Licensed under the Apache License, Version 2.0 (the "License");
  10  * you may not use this file except in compliance with the License.
  11  * You may obtain a copy of the License at
  12  *
  13  * http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  25
  26 #include "location-accuracy.h"
  27 #include "location-log.h"
  28
  29 GType
  30 location_accuracy_get_type(void)
  31 {
  32         static volatile gsize type_volatile = 0;
  33         if (g_once_init_enter(&type_volatile)) {
  34                 GType type = g_boxed_type_register_static(g_intern_static_string("LocationAccuracy"),
  35                                         (GBoxedCopyFunc) location_accuracy_copy, (GBoxedFreeFunc) location_accuracy_free);
  36
  37                 g_once_init_leave(&type_volatile, type);
  38         }
  39         return type_volatile;
  40 }
  41
  42 EXPORT_API LocationAccuracy *
  43 location_accuracy_new(LocationAccuracyLevel level, gdouble horizontal_accuracy, gdouble vertical_accuracy)
  44 {
  45         LocationAccuracy *accuracy = g_slice_new0(LocationAccuracy);
  46         g_return_val_if_fail(accuracy, NULL);
  47
  48         accuracy->level = level;
  49         accuracy->horizontal_accuracy = horizontal_accuracy;
  50         accuracy->vertical_accuracy = vertical_accuracy;
  51
  52         return accuracy;
  53 }
  54
  55 EXPORT_API void
  56 location_accuracy_free(LocationAccuracy *accuracy)
  57 {
  58         g_return_if_fail(accuracy);
  59         g_slice_free(LocationAccuracy, accuracy);
  60 }
  61
  62 static int
  63 comp_int(int a, int b)
  64 {
  65         if (a < b) return -1;
  66         if (a == b) return 0;
  67         return 1;
  68 }
  69
  70 static int
  71 comp_double_reverse(double a, double b)
  72 {
  73         if (a > b) return -1;
  74         else if (a == b) return 0;
  75         return 1;
  76 }
  77
  78 EXPORT_API int
  79 location_accuracy_level_compare(const LocationAccuracy *accuracy1, const LocationAccuracy *accuracy2)
  80 {
  81         g_return_val_if_fail(accuracy1, -1);
  82         g_return_val_if_fail(accuracy2, 1);
  83
  84         return comp_int(accuracy1->level, accuracy2->level);
  85 }
  86
  87 EXPORT_API int
  88 location_accuracy_compare(const LocationAccuracy *accuracy1, const LocationAccuracy *accuracy2)
  89 {
  90         int ret = 0;
  91         ret = location_accuracy_level_compare(accuracy1, accuracy2);
  92         if (!ret) {
  93                 ret = comp_double_reverse(accuracy1->horizontal_accuracy, accuracy2->horizontal_accuracy);
  94                 if (!ret) return comp_double_reverse(accuracy1->vertical_accuracy, accuracy2->vertical_accuracy);
  95         }
  96         return ret;
  97 }
  98
  99 EXPORT_API LocationAccuracy *
 100 location_accuracy_copy(const LocationAccuracy *accuracy)
 101 {
 102         g_return_val_if_fail(accuracy, NULL);
 103         return location_accuracy_new(accuracy->level, accuracy->horizontal_accuracy, accuracy->vertical_accuracy);
 104 }