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/*
* 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.
*/
#pragma once
#include "BluetoothAudioSession.h"
namespace android {
namespace bluetooth {
namespace audio {
class BluetoothAudioSessionControl {
public:
// The control API helps to check if session is ready or not
// @return: true if the Bluetooth stack has started th specified session
static bool IsSessionReady(const SessionType& session_type) {
std::shared_ptr<BluetoothAudioSession> session_ptr =
BluetoothAudioSessionInstance::GetSessionInstance(session_type);
if (session_ptr != nullptr) {
return session_ptr->IsSessionReady();
}
return false;
}
// The control API helps the bluetooth_audio module to register
// PortStatusCallbacks
// @return: cookie - the assigned number to this bluetooth_audio output
static uint16_t RegisterControlResultCback(
const SessionType& session_type, const PortStatusCallbacks& cbacks) {
std::shared_ptr<BluetoothAudioSession> session_ptr =
BluetoothAudioSessionInstance::GetSessionInstance(session_type);
if (session_ptr != nullptr) {
return session_ptr->RegisterStatusCback(cbacks);
}
return kObserversCookieUndefined;
}
// The control API helps the bluetooth_audio module to unregister
// PortStatusCallbacks
// @param: cookie - indicates which bluetooth_audio output is
static void UnregisterControlResultCback(const SessionType& session_type,
uint16_t cookie) {
std::shared_ptr<BluetoothAudioSession> session_ptr =
BluetoothAudioSessionInstance::GetSessionInstance(session_type);
if (session_ptr != nullptr) {
session_ptr->UnregisterStatusCback(cookie);
}
}
// The control API for the bluetooth_audio module to get current
// AudioConfiguration
static const AudioConfiguration& GetAudioConfig(
const SessionType& session_type) {
std::shared_ptr<BluetoothAudioSession> session_ptr =
BluetoothAudioSessionInstance::GetSessionInstance(session_type);
if (session_ptr != nullptr) {
return session_ptr->GetAudioConfig();
} else if (session_type == SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
return BluetoothAudioSession::kInvalidOffloadAudioConfiguration;
} else {
return BluetoothAudioSession::kInvalidSoftwareAudioConfiguration;
}
}
// Those control APIs for the bluetooth_audio module to start / suspend / stop
// stream, to check position, and to update metadata.
static bool StartStream(const SessionType& session_type) {
std::shared_ptr<BluetoothAudioSession> session_ptr =
BluetoothAudioSessionInstance::GetSessionInstance(session_type);
if (session_ptr != nullptr) {
return session_ptr->StartStream();
}
return false;
}
static bool SuspendStream(const SessionType& session_type) {
std::shared_ptr<BluetoothAudioSession> session_ptr =
BluetoothAudioSessionInstance::GetSessionInstance(session_type);
if (session_ptr != nullptr) {
return session_ptr->SuspendStream();
}
return false;
}
static void StopStream(const SessionType& session_type) {
std::shared_ptr<BluetoothAudioSession> session_ptr =
BluetoothAudioSessionInstance::GetSessionInstance(session_type);
if (session_ptr != nullptr) {
session_ptr->StopStream();
}
}
static bool GetPresentationPosition(const SessionType& session_type,
uint64_t* remote_delay_report_ns,
uint64_t* total_bytes_readed,
timespec* data_position) {
std::shared_ptr<BluetoothAudioSession> session_ptr =
BluetoothAudioSessionInstance::GetSessionInstance(session_type);
if (session_ptr != nullptr) {
return session_ptr->GetPresentationPosition(
remote_delay_report_ns, total_bytes_readed, data_position);
}
return false;
}
static void UpdateTracksMetadata(
const SessionType& session_type,
const struct source_metadata* source_metadata) {
std::shared_ptr<BluetoothAudioSession> session_ptr =
BluetoothAudioSessionInstance::GetSessionInstance(session_type);
if (session_ptr != nullptr) {
session_ptr->UpdateTracksMetadata(source_metadata);
}
}
// The control API writes stream to FMQ
static size_t OutWritePcmData(const SessionType& session_type,
const void* buffer, size_t bytes) {
std::shared_ptr<BluetoothAudioSession> session_ptr =
BluetoothAudioSessionInstance::GetSessionInstance(session_type);
if (session_ptr != nullptr) {
return session_ptr->OutWritePcmData(buffer, bytes);
}
return 0;
}
};
} // namespace audio
} // namespace bluetooth
} // namespace android
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