| /* |
| * Copyright 2021 HIMSA II K/S - www.himsa.com. |
| * Represented by EHIMA - www.ehima.com |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma once |
| |
| #include <hardware/bluetooth.h> |
| #include <raw_address.h> |
| |
| #include <variant> |
| |
| namespace bluetooth { |
| namespace vc { |
| |
| enum class ConnectionState { |
| DISCONNECTED = 0, |
| CONNECTING, |
| CONNECTED, |
| DISCONNECTING |
| }; |
| |
| class VolumeControlCallbacks { |
| public: |
| virtual ~VolumeControlCallbacks() = default; |
| |
| /** Callback for profile connection state change */ |
| virtual void OnConnectionState(ConnectionState state, |
| const RawAddress& address) = 0; |
| |
| /* Callback for the volume change changed on the device */ |
| virtual void OnVolumeStateChanged(const RawAddress& address, uint8_t volume, |
| bool mute, bool isAutonomous) = 0; |
| |
| /* Callback for the volume change changed on the group*/ |
| virtual void OnGroupVolumeStateChanged(int group_id, uint8_t volume, |
| bool mute, bool isAutonomous) = 0; |
| |
| virtual void OnDeviceAvailable(const RawAddress& address, |
| uint8_t num_offset) = 0; |
| |
| /* Callbacks for Volume Offset Control Service (VOCS) - Extended Audio Outputs |
| */ |
| virtual void OnExtAudioOutVolumeOffsetChanged(const RawAddress& address, |
| uint8_t ext_output_id, |
| int16_t offset) = 0; |
| virtual void OnExtAudioOutLocationChanged(const RawAddress& address, |
| uint8_t ext_output_id, |
| uint32_t location) = 0; |
| virtual void OnExtAudioOutDescriptionChanged(const RawAddress& address, |
| uint8_t ext_output_id, |
| std::string descr) = 0; |
| }; |
| |
| class VolumeControlInterface { |
| public: |
| virtual ~VolumeControlInterface() = default; |
| |
| /** Register the Volume Control callbacks */ |
| virtual void Init(VolumeControlCallbacks* callbacks) = 0; |
| |
| /** Closes the interface */ |
| virtual void Cleanup(void) = 0; |
| |
| /** Connect to Volume Control */ |
| virtual void Connect(const RawAddress& address) = 0; |
| |
| /** Disconnect from Volume Control */ |
| virtual void Disconnect(const RawAddress& address) = 0; |
| |
| /** Called when Volume control devices is unbonded */ |
| virtual void RemoveDevice(const RawAddress& address) = 0; |
| |
| /** Set the volume */ |
| virtual void SetVolume(std::variant<RawAddress, int> addr_or_group_id, |
| uint8_t volume) = 0; |
| /** Mute the volume */ |
| virtual void Mute(std::variant<RawAddress, int> addr_or_group_id) = 0; |
| |
| /** Unmute the volume */ |
| virtual void Unmute(std::variant<RawAddress, int> addr_or_group_id) = 0; |
| |
| virtual void GetExtAudioOutVolumeOffset(const RawAddress& address, |
| uint8_t ext_output_id) = 0; |
| virtual void SetExtAudioOutVolumeOffset(const RawAddress& address, |
| uint8_t ext_output_id, |
| int16_t offset_val) = 0; |
| virtual void GetExtAudioOutLocation(const RawAddress& address, |
| uint8_t ext_output_id) = 0; |
| virtual void SetExtAudioOutLocation(const RawAddress& address, |
| uint8_t ext_output_id, |
| uint32_t location) = 0; |
| virtual void GetExtAudioOutDescription(const RawAddress& address, |
| uint8_t ext_output_id) = 0; |
| virtual void SetExtAudioOutDescription(const RawAddress& address, |
| uint8_t ext_output_id, |
| std::string descr) = 0; |
| }; |
| |
| } /* namespace vc */ |
| } /* namespace bluetooth */ |