1 // Copyright 2020 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //     https://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #ifndef CORE_INTERNAL_MEDIUMS_MEDIUMS_H_
16 #define CORE_INTERNAL_MEDIUMS_MEDIUMS_H_
17 
18 #include "core/internal/mediums/ble.h"
19 #include "core/internal/mediums/bluetooth_classic.h"
20 #include "core/internal/mediums/bluetooth_radio.h"
21 #include "core/internal/mediums/webrtc.h"
22 #include "core/internal/mediums/wifi_lan.h"
23 
24 namespace location {
25 namespace nearby {
26 namespace connections {
27 
28 // Facilitates convenient and reliable usage of various wireless mediums.
29 class Mediums {
30  public:
31   Mediums() = default;
32   ~Mediums() = default;
33 
34   // Returns a handle to the Bluetooth radio.
35   BluetoothRadio& GetBluetoothRadio();
36 
37   // Returns a handle to the Bluetooth Classic medium.
38   BluetoothClassic& GetBluetoothClassic();
39 
40   // Returns a handle to the Ble medium.
41   Ble& GetBle();
42 
43   // Returns a handle to the Wifi-Lan medium.
44   WifiLan& GetWifiLan();
45 
46   // Returns a handle to the WebRtc medium.
47   mediums::WebRtc& GetWebRtc();
48 
49  private:
50   // The order of declaration is critical for both construction and
51   // destruction.
52   //
53   // 1) Construction: The individual mediums have a dependency on the
54   // corresponding radio, so the radio must be initialized first.
55   //
56   // 2) Destruction: The individual mediums should be shut down before the
57   // corresponding radio.
58   BluetoothRadio bluetooth_radio_;
59   BluetoothClassic bluetooth_classic_{bluetooth_radio_};
60   Ble ble_{bluetooth_radio_};
61   WifiLan wifi_lan_;
62   mediums::WebRtc webrtc_;
63 };
64 
65 }  // namespace connections
66 }  // namespace nearby
67 }  // namespace location
68 
69 #endif  // CORE_INTERNAL_MEDIUMS_MEDIUMS_H_
70