| /* |
| *Copyright (c) 2020, The Linux Foundation. All rights reserved. |
| */ |
| |
| /* |
| * Copyright 2018 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #ifndef ANDROID_INCLUDE_BT_VCP_CONTROLLER_H |
| #define ANDROID_INCLUDE_BT_VCP_CONTROLLER_H |
| |
| #include <hardware/bluetooth.h> |
| |
| #define BT_PROFILE_VOLUME_CONTROL_ID "volume_control" |
| |
| namespace bluetooth { |
| namespace vcp_controller { |
| |
| enum class ConnectionState { |
| DISCONNECTED = 0, |
| CONNECTING, |
| CONNECTED, |
| DISCONNECTING |
| }; |
| |
| class VcpControllerCallbacks { |
| public: |
| virtual ~VcpControllerCallbacks() = default; |
| |
| /** Callback for profile connection state change */ |
| virtual void OnConnectionState(ConnectionState state, |
| const RawAddress& address) = 0; |
| |
| virtual void OnVolumeStateChange(uint8_t volume, uint8_t mute, |
| const RawAddress& address) = 0; |
| |
| virtual void OnVolumeFlagsChange(uint8_t flags, |
| const RawAddress& address) = 0; |
| }; |
| |
| class VcpControllerInterface { |
| public: |
| virtual ~VcpControllerInterface() = default; |
| |
| /** Register the Volume Controller callbacks */ |
| virtual void Init(VcpControllerCallbacks* callbacks) = 0; |
| |
| /** Connect to Volume Renderer device */ |
| virtual void Connect(const RawAddress& address, bool isDirect) = 0; |
| |
| /** Disconnect from Volume Renderer device */ |
| virtual void Disconnect(const RawAddress& address) = 0; |
| |
| /** Set absolute volume */ |
| virtual void SetAbsVolume(uint8_t volume, const RawAddress& address) = 0; |
| |
| virtual void Mute(const RawAddress& address) = 0; |
| |
| virtual void Unmute(const RawAddress& address) = 0; |
| |
| /** Closes the interface. */ |
| virtual void Cleanup(void) = 0; |
| }; |
| |
| } // namespace vcp_controller |
| } // namespace bluetooth |
| |
| #endif /* ANDROID_INCLUDE_BT_VCP_CONTROLLER_H */ |
| |
| |