text: /*
   *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
   *
   *  Use of this source code is governed by a BSD-style license
   *  that can be found in the LICENSE file in the root of the source
   *  tree. An additional intellectual property rights grant can be found
   *  in the file PATENTS.  All contributing project authors may
   *  be found in the AUTHORS file in the root of the source tree.
   */
  
  #ifndef API_AUDIO_CODECS_G722_AUDIO_DECODER_G722_H_
  #define API_AUDIO_CODECS_G722_AUDIO_DECODER_G722_H_
  
  #include <memory>
  #include <vector>
  
  #include BOSS_ABSEILCPP_U_absl__types__optional_h //original-code:"absl/types/optional.h"
  #include BOSS_WEBRTC_U_api__audio_codecs__audio_codec_pair_id_h //original-code:"api/audio_codecs/audio_codec_pair_id.h"
  #include BOSS_WEBRTC_U_api__audio_codecs__audio_decoder_h //original-code:"api/audio_codecs/audio_decoder.h"
  #include BOSS_WEBRTC_U_api__audio_codecs__audio_format_h //original-code:"api/audio_codecs/audio_format.h"
  
  namespace webrtc {
  
  // G722 decoder API for use as a template parameter to
  // CreateAudioDecoderFactory<...>().
  //
  // NOTE: This struct is still under development and may change without notice.
  struct AudioDecoderG722 {
    struct Config {
      bool IsOk() const { return num_channels == 1 || num_channels == 2; }
      int num_channels;
    };
    static absl::optional<Config> SdpToConfig(const SdpAudioFormat& audio_format);
    static void AppendSupportedDecoders(std::vector<AudioCodecSpec>* specs);
    static std::unique_ptr<AudioDecoder> MakeAudioDecoder(
        Config config,
        absl::optional<AudioCodecPairId> codec_pair_id = absl::nullopt);
  };
  
  }  // namespace webrtc
  
  #endif  // API_AUDIO_CODECS_G722_AUDIO_DECODER_G722_H_
  