You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
3.1 KiB
104 lines
3.1 KiB
//
|
|
// Copyright (C) 2017 Google, Inc.
|
|
//
|
|
// 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 <atomic>
|
|
#include <mutex>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include <base/macros.h>
|
|
|
|
#include "service/bluetooth_instance.h"
|
|
#include "service/hal/bluetooth_av_interface.h"
|
|
|
|
namespace bluetooth {
|
|
|
|
class A2dpSink : public BluetoothInstance,
|
|
private hal::BluetoothAvInterface::A2dpSinkObserver {
|
|
public:
|
|
// We only allow one instance of this object at a time.
|
|
static const int kSingletonInstanceId;
|
|
|
|
class Delegate {
|
|
public:
|
|
virtual void OnConnectionState(const std::string& device_address,
|
|
int state) = 0;
|
|
virtual void OnAudioState(const std::string& device_address, int state) = 0;
|
|
virtual void OnAudioConfig(const std::string& device_address,
|
|
uint32_t sample_rate, uint8_t channel_count) = 0;
|
|
|
|
protected:
|
|
virtual ~Delegate() = default;
|
|
};
|
|
|
|
~A2dpSink() override;
|
|
|
|
void SetDelegate(Delegate* delegate);
|
|
|
|
// BluetoothInstance implementation:
|
|
const Uuid& GetAppIdentifier() const override;
|
|
int GetInstanceId() const override;
|
|
|
|
bool Enable();
|
|
void Disable();
|
|
bool Connect(const std::string& device_address);
|
|
bool Disconnect(const std::string& device_address);
|
|
void SetAudioFocusState(int focus_state);
|
|
void SetAudioTrackGain(float gain);
|
|
|
|
private:
|
|
friend class A2dpSinkFactory;
|
|
|
|
explicit A2dpSink(const Uuid& uuid);
|
|
|
|
// hal::bluetooth::hal::BluetoothAvInterface::Observer implementation:
|
|
void ConnectionStateCallback(bluetooth::hal::BluetoothAvInterface* iface,
|
|
const RawAddress& bd_addr,
|
|
btav_connection_state_t state) override;
|
|
void AudioStateCallback(bluetooth::hal::BluetoothAvInterface* iface,
|
|
const RawAddress& bd_addr,
|
|
btav_audio_state_t state) override;
|
|
void AudioConfigCallback(bluetooth::hal::BluetoothAvInterface* iface,
|
|
const RawAddress& bd_addr, uint32_t sample_rate,
|
|
uint8_t channel_count) override;
|
|
|
|
// See getters above for documentation.
|
|
const Uuid app_identifier_;
|
|
|
|
std::mutex mutex_;
|
|
std::mutex delegate_mutex_;
|
|
Delegate* delegate_ = nullptr;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(A2dpSink);
|
|
};
|
|
|
|
class A2dpSinkFactory : public BluetoothInstanceFactory {
|
|
public:
|
|
A2dpSinkFactory();
|
|
~A2dpSinkFactory() override;
|
|
|
|
// BluetoothInstanceFactory override:
|
|
bool RegisterInstance(const Uuid& uuid,
|
|
const RegisterCallback& callback) override;
|
|
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(A2dpSinkFactory);
|
|
};
|
|
|
|
} // namespace bluetooth
|