bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.cpp

/*
 * Copyright (C) 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.
 */

#define LOG_TAG "BTAudioProviderLeAudioHW"

#include "LeAudioOffloadAudioProvider.h"

#include <BluetoothAudioCodecs.h>
#include <BluetoothAudioSessionReport.h>
#include <android-base/logging.h>

namespace aidl {
namespace android {
namespace hardware {
namespace bluetooth {
namespace audio {

LeAudioOffloadOutputAudioProvider::LeAudioOffloadOutputAudioProvider()
    : LeAudioOffloadAudioProvider() {
  session_type_ = SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH;
}

LeAudioOffloadInputAudioProvider::LeAudioOffloadInputAudioProvider()
    : LeAudioOffloadAudioProvider() {
  session_type_ = SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH;
}

LeAudioOffloadBroadcastAudioProvider::LeAudioOffloadBroadcastAudioProvider()
    : LeAudioOffloadAudioProvider() {
  session_type_ =
      SessionType::LE_AUDIO_BROADCAST_HARDWARE_OFFLOAD_ENCODING_DATAPATH;
}

LeAudioOffloadAudioProvider::LeAudioOffloadAudioProvider()
    : BluetoothAudioProvider() {}

bool LeAudioOffloadAudioProvider::isValid(const SessionType& sessionType) {
  return (sessionType == session_type_);
}

ndk::ScopedAStatus LeAudioOffloadAudioProvider::startSession(
    const std::shared_ptr<IBluetoothAudioPort>& host_if,
    const AudioConfiguration& audio_config,
    const std::vector<LatencyMode>& latency_modes, DataMQDesc* _aidl_return) {
  if (audio_config.getTag() != AudioConfiguration::leAudioConfig) {
    LOG(WARNING) << __func__ << " - Invalid Audio Configuration="
                 << audio_config.toString();
    *_aidl_return = DataMQDesc();
    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
  }
  const auto& le_audio_config =
      audio_config.get<AudioConfiguration::leAudioConfig>();
  if (!BluetoothAudioCodecs::IsOffloadLeAudioConfigurationValid(
          session_type_, le_audio_config)) {
    LOG(WARNING) << __func__ << " - Unsupported LC3 Offloaded Configuration="
                 << le_audio_config.toString();
    *_aidl_return = DataMQDesc();
    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
  }

  return BluetoothAudioProvider::startSession(
      host_if, audio_config, latency_modes, _aidl_return);
}

ndk::ScopedAStatus LeAudioOffloadAudioProvider::onSessionReady(
    DataMQDesc* _aidl_return) {
  BluetoothAudioSessionReport::OnSessionStarted(
      session_type_, stack_iface_, nullptr, *audio_config_, latency_modes_);
  *_aidl_return = DataMQDesc();
  return ndk::ScopedAStatus::ok();
}

}  // namespace audio
}  // namespace bluetooth
}  // namespace hardware
}  // namespace android
}  // namespace aidl