1 //
2 //  Copyright (C) 2015 Google, Inc.
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 <base/macros.h>
20 #include <binder/IBinder.h>
21 #include <binder/IInterface.h>
22 
23 #include <bluetooth/adapter_state.h>
24 
25 namespace ipc {
26 namespace binder {
27 
28 // This class defines the Binder IPC interface for receiving adapter state
29 // updates from the Bluetooth service. This class was written based on the
30 // corresponding AIDL file at
31 // /frameworks/base/core/java/android/bluetooth/IBluetoothCallback.aidl.
32 //
33 // NOTE: KEEP THIS FILE UP-TO-DATE with the corresponding AIDL, otherwise this
34 // won't be compatible with the Android framework.
35 class IBluetoothCallback : public android::IInterface {
36  public:
37   DECLARE_META_INTERFACE(BluetoothCallback);
38 
39   static const char kServiceName[];
40 
41   // Transaction codes for interface methods.
42   enum {
43     ON_BLUETOOTH_STATE_CHANGE_TRANSACTION =
44         android::IBinder::FIRST_CALL_TRANSACTION,
45   };
46 
47   virtual void OnBluetoothStateChange(
48       bluetooth::AdapterState prev_state,
49       bluetooth::AdapterState new_state) = 0;
50 
51  private:
52   DISALLOW_COPY_AND_ASSIGN(IBluetoothCallback);
53 };
54 
55 // TODO(armansito): Implement notification for when the process dies.
56 
57 // The Binder server interface to IBluetoothCallback. A class that implements
58 // IBluetoothCallback must inherit from this class.
59 class BnBluetoothCallback : public android::BnInterface<IBluetoothCallback> {
60  public:
61   BnBluetoothCallback() = default;
62   virtual ~BnBluetoothCallback() = default;
63 
64  private:
65   virtual android::status_t onTransact(
66       uint32_t code,
67       const android::Parcel& data,
68       android::Parcel* reply,
69       uint32_t flags = 0);
70 };
71 
72 // The Binder client interface to IBluetoothCallback.
73 class BpBluetoothCallback : public android::BpInterface<IBluetoothCallback> {
74  public:
75   BpBluetoothCallback(const android::sp<android::IBinder>& impl);
76   virtual ~BpBluetoothCallback() = default;
77 
78   // IBluetoothCallback override:
79   void OnBluetoothStateChange(bluetooth::AdapterState prev_state,
80                               bluetooth::AdapterState new_state) override;
81 
82  private:
83   DISALLOW_COPY_AND_ASSIGN(BpBluetoothCallback);
84 };
85 
86 }  // namespace binder
87 }  // namespace ipc
88