src/cobalt/h5vcc/h5vcc_audio_config_array.cc

/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * 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.
 */

#include "cobalt/h5vcc/h5vcc_audio_config_array.h"

#include "media/audio/shell_audio_streamer.h"

namespace cobalt {
namespace h5vcc {

using ::media::ShellAudioStreamer;

H5vccAudioConfigArray::H5vccAudioConfigArray() : audio_config_updated_(false) {}

void H5vccAudioConfigArray::MaybeRefreshAudioConfigs() {
  if (audio_config_updated_) {
    return;
  }
  // Some platforms may not use the filter based media stack and don't have a
  // ShellAudioStreamer implementation.
  if (!ShellAudioStreamer::Instance()) {
    return;
  }
  std::vector<ShellAudioStreamer::OutputDevice> output_devices =
      ShellAudioStreamer::Instance()->GetOutputDevices();
  audio_configs_.reserve(output_devices.size());
  for (size_t i = 0; i < output_devices.size(); ++i) {
    audio_configs_.push_back(new H5vccAudioConfig(
        output_devices[i].connector, output_devices[i].latency_ms,
        output_devices[i].coding_type, output_devices[i].number_of_channels,
        output_devices[i].sampling_frequency));
  }
  audio_config_updated_ = true;
}

}  // namespace h5vcc
}  // namespace cobalt