// Copyright (c) 2023, Alliance for Open Media. All rights reserved
//
// This source code is subject to the terms of the BSD 3-Clause Clear License
// and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
// License was not distributed with this source code in the LICENSE file, you
// can obtain it at www.aomedia.org/license/software-license/bsd-3-c-c. If the
// Alliance for Open Media Patent License 1.0 was not distributed with this
// source code in the PATENTS file, you can obtain it at
// www.aomedia.org/license/patent.

syntax = "proto2";

package libiamf_proto;

message AudioFrameObuMetadata {
  optional string wav_filename = 1;
  reserved 2;
  reserved 3;

  // Trimming information.
  optional uint32 samples_to_trim_at_end = 4;
  optional uint32 samples_to_trim_at_start = 5;

  // ID of the audio element whose substreams will be provided/mixed
  // from the channels in this WAV file.
  optional uint32 audio_element_id = 6;

  // Channels used in this WAV file, in the order as described in [ITU2051-3]
  // for loudspeaker layouts or ACN order for ambisonics. May be fewer than
  // the total number of channels in the WAV file if only a subset is to be
  // used.
  repeated uint32 channel_ids = 7 [packed = true];

  // Channel Labels, e.g. "L2", "Ls5". For ambisonics, use "A{ACN number}",
  // e.g. "A0", "A13". Must be of the same length as `channel_ids`.
  repeated string channel_labels = 8;
}