@type color_config() :: %{
  high_bitdepth: boolean(),
  bitdepth: non_neg_integer(),
  monochrome: boolean(),
  subsampling_x: 0..1,
  subsampling_y: 0..1,
  chroma_sample_position: non_neg_integer()
}

@type decoder_model_info() :: %{
  buffer_delay_length_minus_1: non_neg_integer(),
  num_units_in_decoding_tick: non_neg_integer(),
  buffer_removal_time_length_minus_1: non_neg_integer(),
  frame_presentation_time_length_minus_1: non_neg_integer()
}

@type operating_parameters_info() :: %{
  decoder_buffer_delay: non_neg_integer(),
  encoder_buffer_delay: non_neg_integer(),
  low_delay_mode_flag: boolean()
}

@type operating_point() :: %{
  operating_point_idc: non_neg_integer(),
  seq_level_idx: non_neg_integer(),
  seq_tier: 0..1,
  operating_parameters_info: operating_parameters_info() | nil,
  initial_display_delay_minus_1: non_neg_integer()
}

@type t() :: %MediaCodecs.AV1.OBU.SequenceHeader{
  additional_frame_id_length_minus_1: non_neg_integer() | nil,
  color_config: color_config(),
  decoder_model_info: decoder_model_info() | nil,
  delta_frame_id_length_minus_2: non_neg_integer() | nil,
  enable_filter_intra: boolean(),
  enable_intra_edge_filter: boolean(),
  initial_display_delay_present_flag: boolean(),
  max_frame_height_minus_1: non_neg_integer(),
  max_frame_width_minus_1: non_neg_integer(),
  operating_points: %{required(non_neg_integer()) => operating_point()},
  operating_points_cnt_minus_1: non_neg_integer(),
  reduced_still_picture_header: boolean(),
  seq_profile: 0..7,
  still_picture: boolean(),
  timing_info: timing_info() | nil,
  use_128x128_superblock: boolean()
}

@type timing_info() :: %{
  num_units_in_display_tick: non_neg_integer(),
  time_scale: non_neg_integer(),
  num_ticks_per_picture_minus_1: non_neg_integer() | nil
}