diff options
Diffstat (limited to 'gps/location/LocationAPI.h')
| -rw-r--r-- | gps/location/LocationAPI.h | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/gps/location/LocationAPI.h b/gps/location/LocationAPI.h new file mode 100644 index 0000000..6f5987c --- /dev/null +++ b/gps/location/LocationAPI.h @@ -0,0 +1,266 @@ +/* Copyright (c) 2017-2018 The Linux Foundation. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * * Neither the name of The Linux Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef LOCATIONAPI_H +#define LOCATIONAPI_H + +#include "ILocationAPI.h" + +class LocationAPI : public ILocationAPI +{ +private: + LocationAPI(); + ~LocationAPI(); + +public: + /* creates an instance to LocationAPI object. + Will return NULL if mandatory parameters are invalid or if the maximum number + of instances have been reached */ + static LocationAPI* createInstance(LocationCallbacks&); + + /* destroy/cleans up the instance, which should be called when LocationControlAPI object is + no longer needed. LocationControlAPI* returned from createInstance will no longer valid + after destroy is called. + If the caller allocates the memory for LocationControlCallbacks used in + LocationControlAPI::createInstance, then the caller must ensure that the memory still remains + valid until destroyCompleteCb is invoked. + */ + void destroy(locationApiDestroyCompleteCallback destroyCompleteCb=nullptr); + + void onRemoveClientCompleteCb (LocationAdapterTypeMask adapterType); + + /* updates/changes the callbacks that will be called. + mandatory callbacks must be present for callbacks to be successfully updated + no return value */ + virtual void updateCallbacks(LocationCallbacks&) override; + + /* ================================== TRACKING ================================== */ + + /* startTracking starts a tracking session, which returns a session id that will be + used by the other tracking APIs and also in the responseCallback to match command + with response. locations are reported on the trackingCallback passed in createInstance + periodically according to LocationOptions. + responseCallback returns: + LOCATION_ERROR_SUCCESS if session was successfully started + LOCATION_ERROR_ALREADY_STARTED if a startTracking session is already in progress + LOCATION_ERROR_CALLBACK_MISSING if no trackingCallback was passed in createInstance + LOCATION_ERROR_INVALID_PARAMETER if TrackingOptions parameter is invalid */ + virtual uint32_t startTracking(TrackingOptions&) override; + + /* stopTracking stops a tracking session associated with id parameter. + responseCallback returns: + LOCATION_ERROR_SUCCESS if successful + LOCATION_ERROR_ID_UNKNOWN if id is not associated with a tracking session */ + virtual void stopTracking(uint32_t id) override; + + /* updateTrackingOptions changes the TrackingOptions of a tracking session associated with id + responseCallback returns: + LOCATION_ERROR_SUCCESS if successful + LOCATION_ERROR_INVALID_PARAMETER if TrackingOptions parameters are invalid + LOCATION_ERROR_ID_UNKNOWN if id is not associated with a tracking session */ + virtual void updateTrackingOptions(uint32_t id, TrackingOptions&) override; + + /* ================================== BATCHING ================================== */ + + /* startBatching starts a batching session, which returns a session id that will be + used by the other batching APIs and also in the responseCallback to match command + with response. locations are reported on the batchingCallback passed in createInstance + periodically according to LocationOptions. A batching session starts tracking on + the low power processor and delivers them in batches by the batchingCallback when + the batch is full or when getBatchedLocations is called. This allows for the processor + that calls this API to sleep when the low power processor can batch locations in the + backgroup and wake up the processor calling the API only when the batch is full, thus + saving power + responseCallback returns: + LOCATION_ERROR_SUCCESS if session was successful + LOCATION_ERROR_ALREADY_STARTED if a startBatching session is already in progress + LOCATION_ERROR_CALLBACK_MISSING if no batchingCallback was passed in createInstance + LOCATION_ERROR_INVALID_PARAMETER if a parameter is invalid + LOCATION_ERROR_NOT_SUPPORTED if batching is not supported */ + virtual uint32_t startBatching(BatchingOptions&) override; + + /* stopBatching stops a batching session associated with id parameter. + responseCallback returns: + LOCATION_ERROR_SUCCESS if successful + LOCATION_ERROR_ID_UNKNOWN if id is not associated with batching session */ + virtual void stopBatching(uint32_t id) override; + + /* updateBatchingOptions changes the BatchingOptions of a batching session associated with id + responseCallback returns: + LOCATION_ERROR_SUCCESS if successful + LOCATION_ERROR_INVALID_PARAMETER if BatchingOptions parameters are invalid + LOCATION_ERROR_ID_UNKNOWN if id is not associated with a batching session */ + virtual void updateBatchingOptions(uint32_t id, BatchingOptions&) override; + + /* getBatchedLocations gets a number of locations that are currently stored/batched + on the low power processor, delivered by the batchingCallback passed in createInstance. + Location are then deleted from the batch stored on the low power processor. + responseCallback returns: + LOCATION_ERROR_SUCCESS if successful, will be followed by batchingCallback call + LOCATION_ERROR_CALLBACK_MISSING if no batchingCallback was passed in createInstance + LOCATION_ERROR_ID_UNKNOWN if id is not associated with a batching session */ + virtual void getBatchedLocations(uint32_t id, size_t count) override; + + /* ================================== GEOFENCE ================================== */ + + /* addGeofences adds any number of geofences and returns an array of geofence ids that + will be used by the other geofence APIs and also in the collectiveResponseCallback to + match command with response. The geofenceBreachCallback will deliver the status of each + geofence according to the GeofenceOption for each. The geofence id array returned will + be valid until the collectiveResponseCallback is called and has returned. + collectiveResponseCallback returns: + LOCATION_ERROR_SUCCESS if session was successful + LOCATION_ERROR_CALLBACK_MISSING if no geofenceBreachCallback + LOCATION_ERROR_INVALID_PARAMETER if any parameters are invalid + LOCATION_ERROR_NOT_SUPPORTED if geofence is not supported */ + virtual uint32_t* addGeofences(size_t count, GeofenceOption*, GeofenceInfo*) override; + + /* removeGeofences removes any number of geofences. Caller should delete ids array after + removeGeofences returneds. + collectiveResponseCallback returns: + LOCATION_ERROR_SUCCESS if successful + LOCATION_ERROR_ID_UNKNOWN if id is not associated with a geofence session */ + virtual void removeGeofences(size_t count, uint32_t* ids) override; + + /* modifyGeofences modifies any number of geofences. Caller should delete ids array after + modifyGeofences returns. + collectiveResponseCallback returns: + LOCATION_ERROR_SUCCESS if successful + LOCATION_ERROR_ID_UNKNOWN if id is not associated with a geofence session + LOCATION_ERROR_INVALID_PARAMETER if any parameters are invalid */ + virtual void modifyGeofences(size_t count, uint32_t* ids, GeofenceOption* options) override; + + /* pauseGeofences pauses any number of geofences, which is similar to removeGeofences, + only that they can be resumed at any time. Caller should delete ids array after + pauseGeofences returns. + collectiveResponseCallback returns: + LOCATION_ERROR_SUCCESS if successful + LOCATION_ERROR_ID_UNKNOWN if id is not associated with a geofence session */ + virtual void pauseGeofences(size_t count, uint32_t* ids) override; + + /* resumeGeofences resumes any number of geofences that are currently paused. Caller should + delete ids array after resumeGeofences returns. + collectiveResponseCallback returns: + LOCATION_ERROR_SUCCESS if successful + LOCATION_ERROR_ID_UNKNOWN if id is not associated with a geofence session */ + virtual void resumeGeofences(size_t count, uint32_t* ids) override; + + /* ================================== GNSS ====================================== */ + + /* gnssNiResponse is called in response to a gnssNiCallback. + responseCallback returns: + LOCATION_ERROR_SUCCESS if session was successful + LOCATION_ERROR_INVALID_PARAMETER if any parameters in GnssNiResponse are invalid + LOCATION_ERROR_ID_UNKNOWN if id does not match a gnssNiCallback */ + virtual void gnssNiResponse(uint32_t id, GnssNiResponse response) override; +}; + +typedef struct { + size_t size; // set to sizeof(LocationControlCallbacks) + responseCallback responseCb; // mandatory + collectiveResponseCallback collectiveResponseCb; // mandatory + gnssConfigCallback gnssConfigCb; // optional +} LocationControlCallbacks; + +class LocationControlAPI : public ILocationControlAPI +{ +private: + LocationControlAPI(); + ~LocationControlAPI(); + +public: + /* creates an instance to LocationControlAPI object. + Will return NULL if mandatory parameters are invalid or if the maximum number + of instances have been reached. Only once instance allowed */ + static LocationControlAPI* createInstance(LocationControlCallbacks&); + + /* destroy/cleans up the instance, which should be called when LocationControlAPI object is + no longer needed. LocationControlAPI* returned from createInstance will no longer valid + after destroy is called */ + void destroy(); + + /* enable will enable specific location technology to be used for calculation locations and + will effectively start a control session if call is successful, which returns a session id + that will be returned in responseCallback to match command with response. The session id is + also needed to call the disable command. + This effect is global for all clients of LocationAPI + responseCallback returns: + LOCATION_ERROR_SUCCESS if successful + LOCATION_ERROR_ALREADY_STARTED if an enable was already called for this techType + LOCATION_ERROR_INVALID_PARAMETER if any parameters are invalid + LOCATION_ERROR_GENERAL_FAILURE if failure for any other reason */ + uint32_t enable(LocationTechnologyType techType); + + /* disable will disable specific location technology to be used for calculation locations and + effectively ends the control session if call is successful. + id parameter is the session id that was returned in enable responseCallback for techType. + The session id is no longer valid after disable's responseCallback returns success. + This effect is global for all clients of LocationAPI + responseCallback returns: + LOCATION_ERROR_SUCCESS if successful + LOCATION_ERROR_ID_UNKNOWN if id was not returned from responseCallback from enable + LOCATION_ERROR_GENERAL_FAILURE if failure for any other reason */ + void disable(uint32_t id); + + /* gnssUpdateConfig updates the gnss specific configuration, which returns a session id array + with an id for each of the bits set in GnssConfig.flags, order from low bits to high bits. + The response for each config that is set will be returned in collectiveResponseCallback. + The session id array returned will be valid until the collectiveResponseCallback is called + and has returned. This effect is global for all clients of LocationAPI + collectiveResponseCallback returns: + LOCATION_ERROR_SUCCESS if session was successful + LOCATION_ERROR_INVALID_PARAMETER if any other parameters are invalid + LOCATION_ERROR_GENERAL_FAILURE if failure for any other reason */ + virtual uint32_t* gnssUpdateConfig(GnssConfig config) override; + + /* gnssGetConfig fetches the current constellation and SV configuration + on the GNSS engine. + Returns a session id array with an id for each of the bits set in + the mask parameter, order from low bits to high bits. + Response is sent via the registered gnssConfigCallback. + This effect is global for all clients of LocationAPI + collectiveResponseCallback returns: + LOCATION_ERROR_SUCCESS if session was successful + LOCATION_ERROR_INVALID_PARAMETER if any parameter is invalid + LOCATION_ERROR_CALLBACK_MISSING If no gnssConfigCallback + was passed in createInstance + LOCATION_ERROR_NOT_SUPPORTED If read of requested configuration + is not supported */ + uint32_t* gnssGetConfig(GnssConfigFlagsMask mask); + + /* delete specific gnss aiding data for testing, which returns a session id + that will be returned in responseCallback to match command with response. + Only allowed in userdebug builds. This effect is global for all clients of LocationAPI + responseCallback returns: + LOCATION_ERROR_SUCCESS if successful + LOCATION_ERROR_INVALID_PARAMETER if any parameters are invalid + LOCATION_ERROR_NOT_SUPPORTED if build is not userdebug */ + virtual uint32_t gnssDeleteAidingData(GnssAidingData& data) override; +}; + +#endif /* LOCATIONAPI_H */ |