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