location/location-accuracy.c

   1 /*
   2  * libslp-location
   3  *
   4  * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. All rights reserved.
   5  *
   6  * Contact: Youngae Kang <youngae.kang@samsung.com>, Yunhan Kim <yhan.kim@samsung.com>,
   7  *          Genie Kim <daejins.kim@samsung.com>, Minjune Kim <sena06.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/location-accuracy.h"
  27 #include "location/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 (
  35                         g_intern_static_string ("LocationAccuracy"),
  36                         (GBoxedCopyFunc) location_accuracy_copy,
  37                         (GBoxedFreeFunc) location_accuracy_free);
  38                 g_once_init_leave(&type_volatile, type);
  39         }
  40         return type_volatile;
  41 }
  42
  43 EXPORT_API LocationAccuracy*
  44 location_accuracy_new (LocationAccuracyLevel level,
  45         gdouble horizontal_accuracy,
  46         gdouble vertical_accuracy)
  47 {
  48         LocationAccuracy* accuracy = g_slice_new0 (LocationAccuracy);
  49         accuracy->level = level;
  50         accuracy->horizontal_accuracy = horizontal_accuracy;
  51         accuracy->vertical_accuracy = vertical_accuracy;
  52
  53         return accuracy;
  54 }
  55
  56 EXPORT_API void
  57 location_accuracy_free (LocationAccuracy* accuracy)
  58 {
  59         g_return_if_fail (accuracy);
  60         g_slice_free (LocationAccuracy, accuracy);
  61 }
  62
  63 static int
  64 comp_int(int a, int b){
  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         if (a > b) return -1;
  73         else if (a == b) return 0;
  74         return 1;
  75 }
  76
  77 int
  78 location_accuracy_level_compare(const LocationAccuracy *accuracy1, const LocationAccuracy *accuracy2)
  79 {
  80         g_return_val_if_fail(accuracy1, -1);
  81         g_return_val_if_fail(accuracy2, 1);
  82
  83         return comp_int(accuracy1->level, accuracy2->level);
  84 }
  85
  86 EXPORT_API int
  87 location_accuracy_compare (const LocationAccuracy *accuracy1, const LocationAccuracy *accuracy2)
  88 {
  89         int ret = 0;
  90         ret = location_accuracy_level_compare(accuracy1, accuracy2);
  91         if(!ret){
  92                 ret = comp_double_reverse(accuracy1->horizontal_accuracy, accuracy2->horizontal_accuracy);
  93                 if(!ret) return comp_double_reverse(accuracy1->vertical_accuracy, accuracy2->vertical_accuracy);
  94         }
  95         return ret;
  96 }
  97
  98 EXPORT_API LocationAccuracy*
  99 location_accuracy_copy (const LocationAccuracy *accuracy)
 100 {
 101         g_return_val_if_fail(accuracy, NULL);
 102         return location_accuracy_new(accuracy->level,
 103                                                                 accuracy->horizontal_accuracy,
 104                                                                 accuracy->vertical_accuracy);
 105 }