1 /*
2  * Copyright 2023 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 
19 #include "hci_hal.h"
20 #include "module.h"
21 
22 namespace bluetooth::hal {
23 
24 class ReadClockHandler {
25  public:
26   virtual ~ReadClockHandler() = default;
27 
28   /// Report a measurement of the BT clock.
29   /// `timestamp` is the local time measured in microseconds,
30   /// `bt_clock` is the local BT clock measured @ 51.2 KHz (32 times the
31   /// BR/EDR packets rate), with precision 1/3200 Hz.
32   virtual void OnEvent(uint32_t timestamp, uint32_t bt_clock) = 0;
33 };
34 
35 class LinkClocker : public ::bluetooth::Module {
36  public:
37   static const ModuleFactory Factory;
38 
39   void OnHciEvent(const HciPacket& packet);
40 
41   static void Register(ReadClockHandler*);
42   static void Unregister();
43 
44  protected:
45   LinkClocker() = default;
46 
ListDependencies(ModuleList *)47   void ListDependencies(ModuleList*) const override {}
Start()48   void Start() override {}
Stop()49   void Stop() override {}
50 
ToString()51   std::string ToString() const override {
52     return std::string("LinkClocker");
53   }
54 };
55 
56 }  // namespace bluetooth::hal
57