19
|
1 |
/*
|
|
2 |
* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies).
|
|
3 |
* All rights reserved.
|
|
4 |
* This component and the accompanying materials are made available
|
|
5 |
* under the terms of the License "Eclipse Public License v1.0"
|
|
6 |
* which accompanies this distribution, and is available
|
|
7 |
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
|
|
8 |
*
|
|
9 |
* Initial Contributors:
|
|
10 |
* Nokia Corporation - initial contribution.
|
|
11 |
*
|
|
12 |
* Contributors:
|
|
13 |
*
|
|
14 |
* Description: Implements location SAPI core ;works as wrapper
|
|
15 |
* around core implementaion.
|
|
16 |
*
|
|
17 |
*/
|
|
18 |
|
|
19 |
|
|
20 |
|
|
21 |
#include "locationcoreimp.h"
|
|
22 |
#include "locationservice.h"
|
|
23 |
|
|
24 |
/**
|
|
25 |
* Maximum number of active objects that can be created : at present only each corresponding
|
|
26 |
* to location-asynch and trace
|
|
27 |
*/
|
|
28 |
const TInt KMAXAO = 2;
|
|
29 |
|
|
30 |
|
|
31 |
|
|
32 |
|
|
33 |
/**
|
|
34 |
* Default constructor
|
|
35 |
*/
|
|
36 |
|
|
37 |
|
|
38 |
EXPORT_C CLocationService :: CLocationService()
|
|
39 |
{
|
|
40 |
//No Implementation Required Here
|
|
41 |
}
|
|
42 |
|
|
43 |
|
|
44 |
/**
|
|
45 |
* Destructor
|
|
46 |
*/
|
|
47 |
|
|
48 |
EXPORT_C CLocationService :: ~CLocationService()
|
|
49 |
{
|
|
50 |
iPositioner.Close();
|
|
51 |
|
|
52 |
|
|
53 |
//Destroy all the contents of the registration table
|
|
54 |
for(TInt iter = 0 ; iter < iRegTable.Count() ; ++iter)
|
|
55 |
{
|
|
56 |
if(iRegTable[iter])
|
|
57 |
{
|
|
58 |
if(iRegTable[iter]->IsActive())
|
|
59 |
{
|
|
60 |
iRegTable[iter]->Deque() ;
|
|
61 |
}
|
|
62 |
delete iRegTable[iter];
|
|
63 |
iRegTable[iter] = NULL ;
|
|
64 |
|
|
65 |
}
|
|
66 |
}
|
|
67 |
iPosServer.Close();
|
|
68 |
iRegTable.Close();
|
|
69 |
|
|
70 |
}
|
|
71 |
|
|
72 |
/**
|
|
73 |
* CLocationService::NewL
|
|
74 |
* Two-phased constructor.
|
|
75 |
*/
|
|
76 |
|
|
77 |
|
|
78 |
EXPORT_C CLocationService *CLocationService :: NewL()
|
|
79 |
{
|
|
80 |
CLocationService *self = new(ELeave)CLocationService() ;
|
|
81 |
CleanupStack::PushL(self);
|
|
82 |
self->ConstructL() ;
|
|
83 |
CleanupStack::Pop(self) ;
|
|
84 |
return self ;
|
|
85 |
|
|
86 |
}
|
|
87 |
|
|
88 |
/**
|
|
89 |
* CLocationService::ConstructL
|
|
90 |
* Symbian 2nd phase constructor can leave.
|
|
91 |
*/
|
|
92 |
|
|
93 |
void CLocationService::ConstructL()
|
|
94 |
{
|
|
95 |
|
|
96 |
DoInitialiseL();
|
|
97 |
}
|
|
98 |
|
|
99 |
|
|
100 |
|
|
101 |
/**
|
|
102 |
* CLocationService::DoInitialiseL
|
|
103 |
* Initialises position server and positioner and
|
|
104 |
* begins the position request sequence.
|
|
105 |
*/
|
|
106 |
|
|
107 |
EXPORT_C void CLocationService :: DoInitialiseL()
|
|
108 |
{
|
|
109 |
TInt error = iPosServer.Connect( );
|
|
110 |
// The connection failed
|
|
111 |
|
|
112 |
User :: LeaveIfError(error) ;
|
|
113 |
|
|
114 |
// Open subsession to the position server
|
|
115 |
error = iPositioner.Open(iPosServer);
|
|
116 |
|
|
117 |
// The opening of a subsession failed
|
|
118 |
if ( KErrNone != error )
|
|
119 |
{
|
|
120 |
iPosServer.Close();
|
|
121 |
User :: Leave( error );
|
|
122 |
}
|
|
123 |
|
|
124 |
|
|
125 |
//setting identity for this requestor
|
|
126 |
User::LeaveIfError( iPositioner.SetRequestor( CRequestor::ERequestorService,
|
|
127 |
CRequestor::EFormatApplication,
|
|
128 |
KIdentity ) );
|
|
129 |
|
|
130 |
//Initialise index which means there is no
|
|
131 |
//active object created yet
|
|
132 |
iIndex = 0 ;
|
|
133 |
//Initialising array pointer to NULL
|
|
134 |
|
|
135 |
for ( TInt count = 0;count < KMAXAO;count++)
|
|
136 |
{
|
|
137 |
iRegTable.Insert(NULL,count);
|
|
138 |
}
|
|
139 |
|
|
140 |
|
|
141 |
//Getthe module id used by location server for sapi location calls.
|
|
142 |
error = iPosServer.GetDefaultModuleId(iModuleId);
|
|
143 |
|
|
144 |
User :: LeaveIfError(error) ;
|
|
145 |
|
|
146 |
}
|
|
147 |
|
|
148 |
|
|
149 |
/**
|
|
150 |
* CLocationService :: GetLocationL with update options, this function gets users current location
|
|
151 |
* returns 0 on success and Symbian specific error codes on failure
|
|
152 |
*/
|
|
153 |
|
|
154 |
EXPORT_C TInt CLocationService :: GetLocationL( TPositionInfoBase* aInfoBase , const TPositionUpdateOptions* aUpdateOpts )
|
|
155 |
{
|
|
156 |
|
|
157 |
TRequestStatus status ;
|
|
158 |
|
|
159 |
if(aUpdateOpts)
|
|
160 |
{
|
|
161 |
TInt error;
|
|
162 |
error = iPositioner.SetUpdateOptions(*aUpdateOpts);
|
|
163 |
if( error)
|
|
164 |
{
|
|
165 |
return error ;
|
|
166 |
}
|
|
167 |
|
|
168 |
}
|
|
169 |
else
|
|
170 |
{
|
|
171 |
TPositionUpdateOptions updateopts ;
|
|
172 |
|
|
173 |
// Set update interval to one second to receive one position data per second
|
|
174 |
updateopts.SetUpdateInterval(TTimeIntervalMicroSeconds(KSUpdateInterval));
|
|
175 |
|
|
176 |
// If position server could not get position
|
|
177 |
// In two minutes it will terminate the position request
|
|
178 |
updateopts.SetUpdateTimeOut(TTimeIntervalMicroSeconds(KSUpdateTimeOut));
|
|
179 |
|
|
180 |
// Positions which have time stamp below KMaxAge can be reused
|
|
181 |
updateopts.SetMaxUpdateAge(TTimeIntervalMicroSeconds(KSMaxAge));
|
|
182 |
|
|
183 |
// Enables location framework to send partial position data
|
|
184 |
updateopts.SetAcceptPartialUpdates(FALSE);
|
|
185 |
|
|
186 |
|
|
187 |
iPositioner.SetUpdateOptions(updateopts) ;
|
|
188 |
}
|
|
189 |
|
|
190 |
|
|
191 |
iPositioner.NotifyPositionUpdate( *aInfoBase, status );
|
|
192 |
User :: WaitForRequest(status) ;
|
|
193 |
|
|
194 |
return status.Int() ;
|
|
195 |
}
|
|
196 |
|
|
197 |
/**
|
|
198 |
* CLocationService::ModuleInfo, gets information about the location moudleid of currently used
|
|
199 |
* positioning moulde, currently this methods only supports info of default module indentifier
|
|
200 |
*/
|
|
201 |
|
|
202 |
EXPORT_C TInt CLocationService :: GetModuleInfo( TPositionModuleInfoBase& aModuleInfo ) const
|
|
203 |
{
|
|
204 |
return iPosServer.GetModuleInfoById(iModuleId , aModuleInfo) ;
|
|
205 |
|
|
206 |
}
|
|
207 |
|
|
208 |
|
|
209 |
|
|
210 |
/**
|
|
211 |
* Function Name : GetLocation Asynchronous
|
|
212 |
* This function gets users current location
|
|
213 |
* returns status of job submitted
|
|
214 |
*/
|
|
215 |
EXPORT_C TInt CLocationService :: GetLocationL( MLocationCallBack* aCallBackObj ,
|
|
216 |
TInt aLocationInfoCategory,
|
|
217 |
TPositionFieldIdList aFieldList ,
|
|
218 |
const TPositionUpdateOptions* aUpateOptions
|
|
219 |
)
|
|
220 |
{
|
|
221 |
|
|
222 |
if(iRegTable[KARRAY_INDEX_GETLOCATION])
|
|
223 |
{
|
|
224 |
if(iRegTable[KARRAY_INDEX_GETLOCATION]->IsActive())
|
|
225 |
{
|
|
226 |
return KErrInUse ; //Return Error is Already registred
|
|
227 |
}
|
|
228 |
|
|
229 |
delete iRegTable[KARRAY_INDEX_GETLOCATION] ;
|
|
230 |
iRegTable[KARRAY_INDEX_GETLOCATION] = NULL ;
|
|
231 |
|
|
232 |
}
|
|
233 |
|
|
234 |
CGetLoc *activeGetLoc = CGetLoc :: NewL(iPosServer ,
|
|
235 |
aFieldList ,
|
|
236 |
KGetLocationRequest,
|
|
237 |
aLocationInfoCategory ) ;
|
|
238 |
//after creation of each active object increment counter by 1
|
|
239 |
|
|
240 |
TInt err = activeGetLoc->GetLocation(aCallBackObj , aUpateOptions) ;
|
|
241 |
|
|
242 |
if ( KErrNone == err )
|
|
243 |
{
|
|
244 |
|
|
245 |
iIndex = KARRAY_INDEX_GETLOCATION; //for getlocation we are storing the pointer in 0th slot
|
|
246 |
iRegTable[KARRAY_INDEX_GETLOCATION] = activeGetLoc ;
|
|
247 |
}
|
|
248 |
|
|
249 |
else
|
|
250 |
{
|
|
251 |
delete activeGetLoc ; //Clean up
|
|
252 |
}
|
|
253 |
|
|
254 |
return err;
|
|
255 |
}
|
|
256 |
|
|
257 |
|
|
258 |
|
|
259 |
/**
|
|
260 |
* CLocationService :: TraceL Notifies user if any changes occurs to his current position,
|
|
261 |
* types of updates required are specified as part of Updateoptions.
|
|
262 |
* Returns 0 on success and symbian specific error codes on failures
|
|
263 |
*/
|
|
264 |
|
|
265 |
EXPORT_C TInt CLocationService :: TraceL( MLocationCallBack* aCallBackObj ,
|
|
266 |
TInt aLocationInfoCategory,
|
|
267 |
TPositionFieldIdList aFiledList ,
|
|
268 |
const TPositionUpdateOptions* aUpateOptions )
|
|
269 |
{
|
|
270 |
|
|
271 |
if(iRegTable[KARRAY_INDEX_TRACE]) //Return Error to user is the reg table slot is not free
|
|
272 |
{
|
|
273 |
if(iRegTable[KARRAY_INDEX_TRACE]->IsAdded())
|
|
274 |
{
|
|
275 |
return KErrInUse ;
|
|
276 |
}
|
|
277 |
//Reuse the existing inactive object
|
|
278 |
delete iRegTable[KARRAY_INDEX_TRACE] ; //Activate this asynchronous job
|
|
279 |
iRegTable[KARRAY_INDEX_TRACE] = NULL ;
|
|
280 |
|
|
281 |
}
|
|
282 |
|
|
283 |
CGetLoc *activeTrace = CGetLoc :: NewL(iPosServer ,
|
|
284 |
aFiledList ,
|
|
285 |
KTraceRequest,
|
|
286 |
aLocationInfoCategory) ;
|
|
287 |
|
|
288 |
TInt ret = activeTrace->GetLocationUpdates(aCallBackObj , aUpateOptions) ;
|
|
289 |
|
|
290 |
if (ret == KErrNone)
|
|
291 |
{
|
|
292 |
iIndex = KARRAY_INDEX_TRACE;
|
|
293 |
iRegTable[KARRAY_INDEX_TRACE] = activeTrace ;
|
|
294 |
}
|
|
295 |
else
|
|
296 |
{ //Cleanup the allocated object
|
|
297 |
delete activeTrace ;
|
|
298 |
}
|
|
299 |
|
|
300 |
return ret;
|
|
301 |
}
|
|
302 |
|
|
303 |
/**
|
|
304 |
* MathOparation to find distance and bearingto between two coordinates,and to move
|
|
305 |
* (Translate)
|
|
306 |
* one coordinate to another.
|
|
307 |
* Before decoding result of a particular requested service consumer code must check
|
|
308 |
* for the returned error code. Result field will be valid only when return code is
|
|
309 |
* KErrNone.
|
|
310 |
*/
|
|
311 |
|
|
312 |
EXPORT_C TInt CLocationService :: MathOperation( inpparam& aInput )
|
|
313 |
{
|
|
314 |
if ( aInput.servicechoice == EDistance ) //find distance between two location
|
|
315 |
{
|
|
316 |
//get the distance between two specified position
|
|
317 |
TInt error = aInput.source.Distance(aInput.destination , aInput.result);
|
|
318 |
return error;
|
|
319 |
|
|
320 |
}
|
|
321 |
else if ( aInput.servicechoice == EBearingTo )
|
|
322 |
{
|
|
323 |
//get the bearingTo between specified coordinates
|
|
324 |
TInt error = aInput.source.BearingTo(aInput.destination,aInput.result);
|
|
325 |
return error;
|
|
326 |
}
|
|
327 |
else if ( aInput.servicechoice == EMove )
|
|
328 |
{
|
|
329 |
//Translate the source coordinate to the target coordinate by specified bearing and distance
|
|
330 |
TInt error = aInput.source.Move(aInput.bearing,aInput.distance);
|
|
331 |
return error;
|
|
332 |
}
|
|
333 |
//In case service asked is not supported
|
|
334 |
return KErrNotSupported;
|
|
335 |
}
|
|
336 |
|
|
337 |
|
|
338 |
/**
|
|
339 |
* Synchronous function which returns users last known position
|
|
340 |
*/
|
|
341 |
|
|
342 |
TInt CLocationService :: GetLastKnownLoc( TPosition& aResultPos )
|
|
343 |
{
|
|
344 |
TRequestStatus Status = KRequestPending ;
|
|
345 |
TPositionInfo posinfo ;
|
|
346 |
TPositionInfoBase *posinfoBase = &posinfo ;
|
|
347 |
|
|
348 |
iPositioner.GetLastKnownPosition(*posinfoBase,Status);
|
|
349 |
User::WaitForRequest(Status);
|
|
350 |
posinfo.GetPosition(aResultPos) ;
|
|
351 |
|
|
352 |
return Status.Int() ;
|
|
353 |
|
|
354 |
}
|
|
355 |
|
|
356 |
/**
|
|
357 |
* CancelOnGoingService : Cancells Requested asynchronous requests,
|
|
358 |
* Input : Type of request to be cancelled(Trace , Getlocation),
|
|
359 |
* Returns success(KErrNone) if service cancelled or else error if
|
|
360 |
* input parameter is invalid
|
|
361 |
*/
|
|
362 |
EXPORT_C TInt CLocationService::CancelOnGoingService( TInt aCancelparam )
|
|
363 |
{
|
|
364 |
if ( (aCancelparam == ECancelGetLocation ) || (aCancelparam == ECancelTrace))
|
|
365 |
{
|
|
366 |
CGetLoc* ptr = iRegTable[aCancelparam];
|
|
367 |
if(iRegTable[aCancelparam])
|
|
368 |
{
|
|
369 |
if(iRegTable[aCancelparam]->IsAdded())
|
|
370 |
{
|
|
371 |
iRegTable[aCancelparam]->Deque() ;
|
|
372 |
}
|
|
373 |
if( ( aCancelparam == ECancelTrace ) )
|
|
374 |
iRegTable[aCancelparam]->SetStatusComplete();
|
|
375 |
delete iRegTable[aCancelparam] ;
|
|
376 |
iRegTable[aCancelparam] = NULL ;
|
|
377 |
return KErrNone;
|
|
378 |
}
|
|
379 |
return KErrNotFound ;
|
|
380 |
|
|
381 |
}
|
|
382 |
|
|
383 |
return KErrArgument;
|
|
384 |
|
|
385 |
}
|
|
386 |
|