src/modules/tizen/DEPRACATED/Geolocation/Geolocation.cpp

   1 /*
   2  * Copyright (c) 2011 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  *    Licensed under the Apache License, Version 2.0 (the "License");
   5  *    you may not use this file except in compliance with the License.
   6  *    You may obtain a copy of the License at
   7  *
   8  *        http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  *    Unless required by applicable law or agreed to in writing, software
  11  *    distributed under the License is distributed on an "AS IS" BASIS,
  12  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  *    See the License for the specific language governing permissions and
  14  *    limitations under the License.
  15  */
  16 /*
  17  * @author      Wojciech Bielawski (w.bielawski@samsung.com)
  18  */
  19
  20 #include "Geolocation.h"
  21 #include <cassert>
  22 #include <API/Geolocation/EventGetCurrentPosition.h>
  23 #include <commons/Exception.h>
  24
  25 using namespace WrtPlugins::Api::Geolocation;
  26 using namespace DPL;
  27
  28 namespace WrtPlugins {
  29 namespace Platform {
  30 namespace Geolocation {
  31 namespace {
  32 static void positionChangedCallback(LocationObject *obj,
  33         guint type,
  34         gpointer data,
  35         gpointer accuracy,
  36         Geolocation* this_)
  37 {
  38     if (this_) {
  39         this_->positionHasChanged(obj, type, data, accuracy);
  40     } else {
  41         LogError("Callback private data is NULL.");
  42     }
  43 }
  44 } //private namespace
  45
  46 Geolocation::Geolocation() :
  47     m_location(NULL),
  48     m_currentLocationMethod(METHOD_GPS),
  49     m_initialized(false)
  50 {
  51     LogDebug("Enter");
  52 }
  53
  54 Geolocation::~Geolocation()
  55 {
  56     LogDebug("Enter");
  57     stop();
  58 }
  59
  60 void Geolocation::getCurrentPosition(const EventGetCurrentPositionPtr& event)
  61 {
  62     initialize();
  63     EventRequestReceiver<EventGetCurrentPosition>::PostRequest(event);
  64 }
  65
  66 void Geolocation::OnRequestReceived(const EventGetCurrentPositionPtr& event)
  67 {
  68     LogDebug("Entered");
  69     gint ret;
  70     LocationPosition* pos = NULL;
  71     LocationAccuracy* acc = NULL;
  72     ret = location_get_position(m_location, &pos, &acc);
  73     if (LOCATION_ERROR_NONE != ret) {
  74         event->setExceptionCode(Commons::ExceptionCodes::PlatformException);
  75         return;
  76     } else if (LOCATION_ACCURACY_LEVEL_NONE != acc->level) {
  77         location_position_free(pos);
  78         location_accuracy_free(acc);
  79         event->setExceptionCode(Commons::ExceptionCodes::PlatformException);
  80         return;
  81     }
  82     event->setTimestamp(static_cast<std::time_t>(pos->timestamp));
  83     event->setLatitude(static_cast<double>(pos->latitude));
  84     event->setLongitude(static_cast<double>(pos->longitude));
  85     event->setAltitude(static_cast<double>(pos->altitude));
  86     event->setAccuracy(static_cast<double>(acc->horizontal_accuracy));
  87     event->setAltitudeAccuracy(static_cast<double>(acc->vertical_accuracy));
  88     location_position_free(pos);
  89     location_accuracy_free(acc);
  90
  91     LocationVelocity* velocity = NULL;
  92     ret = location_get_velocity(m_location, &velocity, &acc);
  93     if (LOCATION_ERROR_NONE != ret) {
  94         event->setExceptionCode(Commons::ExceptionCodes::PlatformException);
  95         return;
  96     } else if (LOCATION_ACCURACY_LEVEL_NONE != acc->level) {
  97         location_velocity_free(velocity);
  98         location_accuracy_free(acc);
  99         event->setExceptionCode(Commons::ExceptionCodes::PlatformException);
 100         return;
 101     }
 102     event->setSpeed(static_cast<double>(velocity->speed));
 103     event->setDirection(static_cast<double>(velocity->direction));
 104     event->setAltitudeSpeed(static_cast<double>(velocity->climb));
 105     event->setMethod(m_currentLocationMethod);
 106     location_velocity_free(velocity);
 107     location_accuracy_free(acc);
 108 }
 109
 110 long Geolocation::watchPosition(const EventPositionChangedEmitterPtr& emitter,
 111         long timeout,
 112         long maximumAge,
 113         bool highAccuracy)
 114 {
 115     initialize();
 116     m_positionEmitters.attach(emitter);
 117     return static_cast<long>(emitter->getId());
 118 }
 119
 120 void Geolocation::clearWatch(EventPositionChangedEmitter::IdType id)
 121 {
 122     m_positionEmitters.detach(id);
 123 }
 124
 125 void Geolocation::positionHasChanged(LocationObject *obj,
 126         guint type,
 127         gpointer data,
 128         gpointer accuracy)
 129 {
 130     LogDebug("Enter");
 131     if (POSITION_UPDATED != type) {
 132         //nothing to do
 133         return;
 134     }
 135
 136     //convert data from platform to API form
 137     LocationPosition *pos = static_cast<LocationPosition*>(data);
 138     LocationAccuracy *acc = static_cast<LocationAccuracy*>(accuracy);
 139     LocationVelocity* velocity = NULL;
 140
 141     EventPositionChangedPtr event(new EventPositionChanged());
 142     PositionProperties props;
 143     props.altitude = static_cast<double>(pos->altitude);
 144     props.latitude = static_cast<double>(pos->latitude);
 145     props.longitude = static_cast<double>(pos->longitude);
 146     props.timestamp = static_cast<std::time_t>(pos->timestamp);
 147     props.accuracy = static_cast<double>(acc->horizontal_accuracy);
 148     props.altitudeAccuracy = static_cast<double>(acc->vertical_accuracy);
 149
 150     gint ret = location_get_velocity(m_location, &velocity, &acc);
 151     if (LOCATION_ERROR_NONE != ret) {
 152         event->setExceptionCode(Commons::ExceptionCodes::PlatformException);
 153         return;
 154     } else if (LOCATION_ACCURACY_LEVEL_NONE != acc->level) {
 155         location_velocity_free(velocity);
 156         location_accuracy_free(acc);
 157         event->setExceptionCode(Commons::ExceptionCodes::PlatformException);
 158         return;
 159     }
 160     props.speed = static_cast<double>(velocity->speed);
 161     props.direction = static_cast<double>(velocity->direction);
 162     props.altitudeSpeed = static_cast<double>(velocity->climb);
 163     location_velocity_free(velocity);
 164     location_accuracy_free(acc);
 165
 166     event->setPositionProperties(props);
 167     m_positionEmitters.emit(event);
 168 }
 169
 170 void Geolocation::changeLocationMethod(ApiLocationMethod method)
 171 {
 172     LogDebug("Enter");
 173     if (method != m_currentLocationMethod) {
 174         m_currentLocationMethod = method;
 175         if (m_location) {
 176             restart();
 177         }
 178     }
 179 }
 180
 181 void Geolocation::initialize()
 182 {
 183     LogDebug("ENTER");
 184     if (!m_initialized) {
 185         DPL::Mutex::ScopedLock lock(&m_initializationMutex);
 186         if (!m_initialized) {
 187             if (LOCATION_ERROR_NONE != location_init()) {
 188                 ThrowMsg(Commons::PlatformException,
 189                          "Couldn't init location module.");
 190             }
 191             m_initialized = true;
 192             start();
 193         }
 194     }
 195 }
 196
 197 void Geolocation::restart()
 198 {
 199     stop();
 200     start();
 201 }
 202
 203 void Geolocation::start()
 204 {
 205     LogDebug("ENTER");
 206     assert(m_initialized && "Geolocation has not been initialized.");
 207     if (m_location) {
 208         return;
 209     }
 210
 211     m_location = location_new(convertMethodToPlatform(m_currentLocationMethod)); //may return NULL
 212     if (NULL == m_location) {
 213         ThrowMsg(Commons::PlatformException,
 214                  "Couldn't create new location object.");
 215     }
 216
 217     if (LOCATION_ERROR_NONE != location_start(m_location)) {
 218         location_free(m_location);
 219         m_location = NULL;
 220         ThrowMsg(Commons::PlatformException, "Couldn't start localizing.");
 221     }
 222     m_signalId = g_signal_connect(m_location, "service-updated",
 223                                   G_CALLBACK(positionChangedCallback), this);
 224 }
 225
 226 void Geolocation::stop()
 227 {
 228     LogDebug("ENTER");
 229     if (!m_initialized || !m_location) {
 230         return;
 231     }
 232
 233     g_signal_handler_disconnect(m_location, m_signalId);
 234     if (LOCATION_ERROR_NONE != location_stop(m_location)) {
 235         ThrowMsg(Commons::PlatformException, "Couldn't stop location object.");
 236     }
 237     if (LOCATION_ERROR_NONE != location_free(m_location)) {
 238         ThrowMsg(Commons::PlatformException, "Couldn't free location module.");
 239     }
 240     m_location = NULL;
 241 }
 242
 243 LocationMethod Geolocation::convertMethodToPlatform(ApiLocationMethod method)
 244 const
 245 {
 246     switch (method) {
 247     case METHOD_GPS:
 248         return LOCATION_METHOD_GPS;
 249     case METHOD_AGPS:
 250         return LOCATION_METHOD_HYBRID;
 251     case METHOD_CPS:
 252         return LOCATION_METHOD_CPS;
 253     case METHOD_IPS:
 254         return LOCATION_METHOD_IPS;
 255     case METHOD_WPS:
 256         return LOCATION_METHOD_WPS;
 257     case METHOD_BEST:
 258         return LOCATION_METHOD_HYBRID;
 259     }
 260     LogError("Unknown location method");
 261     return LOCATION_METHOD_HYBRID;
 262 }
 263 }
 264 }
 265 }