1 /*
2  * Copyright (C) 2020 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 #pragma once
18 #include <condition_variable>
19 #include <deque>
20 #include <mutex>
21 #include <thread>
22 #include <aidl/android/hardware/gnss/BnGnssBatching.h>
23 
24 namespace aidl {
25 namespace android {
26 namespace hardware {
27 namespace gnss {
28 namespace implementation {
29 
30 struct GnssBatching : public BnGnssBatching {
31     ~GnssBatching();
32 
33     ndk::ScopedAStatus init(const std::shared_ptr<IGnssBatchingCallback>& callback) override;
34     ndk::ScopedAStatus getBatchSize(int* size) override;
35     ndk::ScopedAStatus start(const Options& options) override;
36     ndk::ScopedAStatus flush() override;
37     ndk::ScopedAStatus stop() override;
38     ndk::ScopedAStatus cleanup() override;
39 
40     void onGnssLocationCb(GnssLocation location);
41 
42 private:
43     void stopImpl();
44     void batchLocationLocked(GnssLocation location, bool wakeUpOnFifoFull);
45     bool flushLocked();
46 
47     std::shared_ptr<IGnssBatchingCallback> mCallback;
48     std::deque<GnssLocation> mBatchedLocations;
49     std::optional<GnssLocation> mLocation;
50     std::condition_variable mThreadNotification;
51     bool mRunning = false;
52     std::thread mThread;
53     mutable std::mutex mMtx;
54 };
55 
56 }  // namespace implementation
57 }  // namespace gnss
58 }  // namespace hardware
59 }  // namespace android
60 }  // namespace aidl
61