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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      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 #ifndef android_hardware_gnss_V1_0_GnssMeasurement_H_
     18 #define android_hardware_gnss_V1_0_GnssMeasurement_H_
     19 
     20 #include <ThreadCreationWrapper.h>
     21 #include <android/hardware/gnss/1.0/IGnssMeasurement.h>
     22 #include <hidl/Status.h>
     23 #include <hardware/gps.h>
     24 
     25 namespace android {
     26 namespace hardware {
     27 namespace gnss {
     28 namespace V1_0 {
     29 namespace implementation {
     30 
     31 using ::android::hardware::gnss::V1_0::IGnssMeasurement;
     32 using ::android::hardware::gnss::V1_0::IGnssMeasurementCallback;
     33 using ::android::hardware::Return;
     34 using ::android::hardware::Void;
     35 using ::android::hardware::hidl_vec;
     36 using ::android::hardware::hidl_string;
     37 using ::android::sp;
     38 
     39 using LegacyGnssData = ::GnssData;
     40 
     41 /*
     42  * Extended interface for GNSS Measurements support. Also contains wrapper methods to allow methods
     43  * from IGnssMeasurementCallback interface to be passed into the conventional implementation of the
     44  * GNSS HAL.
     45  */
     46 struct GnssMeasurement : public IGnssMeasurement {
     47     GnssMeasurement(const GpsMeasurementInterface* gpsMeasurementIface);
     48 
     49     /*
     50      * Methods from ::android::hardware::gnss::V1_0::IGnssMeasurement follow.
     51      * These declarations were generated from IGnssMeasurement.hal.
     52      */
     53     Return<GnssMeasurementStatus> setCallback(
     54         const sp<IGnssMeasurementCallback>& callback) override;
     55     Return<void> close() override;
     56 
     57     /*
     58      * Callback methods to be passed into the conventional GNSS HAL by the default
     59      * implementation. These methods are not part of the IGnssMeasurement base class.
     60      */
     61     static void gnssMeasurementCb(LegacyGnssData* data);
     62      /*
     63       * Deprecated callback added for backward compatibity for devices that do
     64       * not support GnssData measurements.
     65       */
     66     static void gpsMeasurementCb(GpsData* data);
     67 
     68     /*
     69      * Holds function pointers to the callback methods.
     70      */
     71     static GpsMeasurementCallbacks sGnssMeasurementCbs;
     72 
     73  private:
     74     const GpsMeasurementInterface* mGnssMeasureIface = nullptr;
     75     static sp<IGnssMeasurementCallback> sGnssMeasureCbIface;
     76 };
     77 
     78 }  // namespace implementation
     79 }  // namespace V1_0
     80 }  // namespace gnss
     81 }  // namespace hardware
     82 }  // namespace android
     83 
     84 #endif  // android_hardware_gnss_V1_0_GnssMeasurement_H_
     85