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/*
* Copyright 2022 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.
*/
#pragma once
#include <hardware/audio.h>
#include "audio_aidl_interfaces.h"
#include "audio_ctrl_ack.h"
namespace bluetooth {
namespace audio {
namespace aidl {
using ::aidl::android::hardware::bluetooth::audio::AudioConfiguration;
using ::aidl::android::hardware::bluetooth::audio::LatencyMode;
using ::aidl::android::hardware::bluetooth::audio::SessionType;
/***
* An IBluetoothTransportInstance needs to be implemented by a Bluetooth
* audio transport, such as A2DP or Hearing Aid, to handle callbacks from Audio
* HAL.
***/
class IBluetoothTransportInstance {
public:
IBluetoothTransportInstance(SessionType sessionType,
AudioConfiguration audioConfig)
: session_type_(sessionType), audio_config_(std::move(audioConfig)){};
virtual ~IBluetoothTransportInstance() = default;
SessionType GetSessionType() const { return session_type_; }
AudioConfiguration GetAudioConfiguration() const { return audio_config_; }
void UpdateAudioConfiguration(const AudioConfiguration& audio_config) {
switch (audio_config.getTag()) {
case AudioConfiguration::pcmConfig:
audio_config_.set<AudioConfiguration::pcmConfig>(
audio_config.get<AudioConfiguration::pcmConfig>());
break;
case AudioConfiguration::a2dpConfig:
audio_config_.set<AudioConfiguration::a2dpConfig>(
audio_config.get<AudioConfiguration::a2dpConfig>());
break;
case AudioConfiguration::leAudioConfig:
audio_config_.set<AudioConfiguration::leAudioConfig>(
audio_config.get<AudioConfiguration::leAudioConfig>());
break;
case AudioConfiguration::leAudioBroadcastConfig:
audio_config_.set<AudioConfiguration::leAudioBroadcastConfig>(
audio_config.get<AudioConfiguration::leAudioBroadcastConfig>());
}
}
virtual BluetoothAudioCtrlAck StartRequest(bool is_low_latency) = 0;
virtual BluetoothAudioCtrlAck SuspendRequest() = 0;
virtual void StopRequest() = 0;
virtual bool GetPresentationPosition(uint64_t* remote_delay_report_ns,
uint64_t* total_bytes_readed,
timespec* data_position) = 0;
virtual void SourceMetadataChanged(
const source_metadata_t& source_metadata) = 0;
virtual void SinkMetadataChanged(const sink_metadata_t& sink_metadata) = 0;
/***
* Invoked when the transport is requested to reset presentation position
***/
virtual void ResetPresentationPosition() = 0;
private:
const SessionType session_type_;
AudioConfiguration audio_config_;
};
/***
* An IBluetoothSinkTransportInstance needs to be implemented by a Bluetooth
* audio transport, such as A2DP, Hearing Aid or LeAudio, to handle callbacks
* from Audio HAL.
***/
class IBluetoothSinkTransportInstance : public IBluetoothTransportInstance {
public:
IBluetoothSinkTransportInstance(SessionType sessionType,
AudioConfiguration audioConfig)
: IBluetoothTransportInstance{sessionType, audioConfig} {}
virtual ~IBluetoothSinkTransportInstance() = default;
/***
* Invoked when the transport is requested to log bytes read
***/
virtual void LogBytesRead(size_t bytes_readed) = 0;
};
class IBluetoothSourceTransportInstance : public IBluetoothTransportInstance {
public:
IBluetoothSourceTransportInstance(SessionType sessionType,
AudioConfiguration audioConfig)
: IBluetoothTransportInstance{sessionType, audioConfig} {}
virtual ~IBluetoothSourceTransportInstance() = default;
/***
* Invoked when the transport is requested to log bytes written
***/
virtual void LogBytesWritten(size_t bytes_written) = 0;
};
} // namespace aidl
} // namespace audio
} // namespace bluetooth
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