1 /*
2  * Copyright 2021 HIMSA II K/S - www.himsa.com.
3  * Represented by EHIMA - www.ehima.com
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  *      http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #pragma once
19 
20 #include <hardware/bt_vc.h>
21 
22 #include "types/raw_address.h"
23 
24 class VolumeControl {
25  public:
26   virtual ~VolumeControl() = default;
27 
28   static void Initialize(bluetooth::vc::VolumeControlCallbacks* callbacks,
29                          const base::Closure& initCb);
30   static void CleanUp();
31   static VolumeControl* Get();
32   static void DebugDump(int fd);
33 
34   static void AddFromStorage(const RawAddress& address);
35 
36   static bool IsVolumeControlRunning();
37 
38   /* Volume Control Server (VCS) */
39   virtual void Connect(const RawAddress& address) = 0;
40   virtual void Disconnect(const RawAddress& address) = 0;
41   virtual void Remove(const RawAddress& address) = 0;
42   virtual void SetVolume(std::variant<RawAddress, int> addr_or_group_id,
43                          uint8_t volume) = 0;
44   virtual void Mute(std::variant<RawAddress, int> addr_or_group_id) = 0;
45   virtual void UnMute(std::variant<RawAddress, int> addr_or_group_id) = 0;
46 
47   /* Volume Offset Control Service (VOCS) */
48   virtual void SetExtAudioOutVolumeOffset(const RawAddress& address,
49                                           uint8_t ext_output_id,
50                                           int16_t offset) = 0;
51   virtual void GetExtAudioOutVolumeOffset(const RawAddress& address,
52                                           uint8_t ext_output_id) = 0;
53 
54   /* Location as per Bluetooth Assigned Numbers.*/
55   virtual void SetExtAudioOutLocation(const RawAddress& address,
56                                       uint8_t ext_output_id,
57                                       uint32_t location) = 0;
58   virtual void GetExtAudioOutLocation(const RawAddress& address,
59                                       uint8_t ext_output_id) = 0;
60   virtual void GetExtAudioOutDescription(const RawAddress& address,
61                                          uint8_t ext_output_id) = 0;
62   virtual void SetExtAudioOutDescription(const RawAddress& address,
63                                          uint8_t ext_output_id,
64                                          std::string descr) = 0;
65 };
66