MediaCodecs.H264.NALU.SPS (MediCodecs v0.7.0)

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Struct describing an H.264 Sequence Parameter Set (SPS).

Summary

Types

t()

Functions

height(sps)

Gets the video width

id(arg)

Gets the SPS ID.

mime_type(sps, tag)

Builds the MIME type from the SPS.

parse(nalu)

Parses a Sequence Parameter Set (SPS) NALU.

profile(sps)

Gets the encoder profile.

width(sps)

Gets the video width

Types

t()

@type t() :: %MediaCodecs.H264.NALU.SPS{
  bit_depth_chroma_minus8: non_neg_integer(),
  bit_depth_luma_minus8: non_neg_integer(),
  chroma_format_idc: non_neg_integer(),
  constraint_set0: 0 | 1,
  constraint_set1: 0 | 1,
  constraint_set2: 0 | 1,
  constraint_set3: 0 | 1,
  constraint_set4: 0 | 1,
  constraint_set5: 0 | 1,
  delta_pic_order_always_zero_flag: 0 | 1,
  direct_8x8_inference_flag: 0 | 1,
  frame_crop_offset:
    %{
      left: non_neg_integer(),
      right: non_neg_integer(),
      top: non_neg_integer(),
      bottom: non_neg_integer()
    }
    | nil,
  frame_mbs_only_flag: 0 | 1,
  gaps_in_frame_num_value_allowed_flag: 0 | 1,
  level_idc: non_neg_integer(),
  log2_max_frame_num_minus4: non_neg_integer(),
  log2_max_pic_order_cnt_lsb_minus4: non_neg_integer() | nil,
  max_num_ref_frames: non_neg_integer(),
  mb_adaptive_frame_field_flag: 0 | 1,
  num_ref_frames_in_pic_order_cnt_cycle: non_neg_integer() | nil,
  offset_for_non_ref_pic: integer() | nil,
  offset_for_ref_frame: [integer()],
  offset_for_top_to_bottom_field: integer() | nil,
  pic_height_in_map_units_minus1: non_neg_integer(),
  pic_order_cnt_type: non_neg_integer(),
  pic_width_in_mbs_minus1: non_neg_integer(),
  profile_idc: non_neg_integer(),
  qpprime_y_zero_transform_bypass_flag: 0 | 1,
  scaling_list: [[non_neg_integer()]],
  separate_colour_plane_flag: 0 | 1,
  seq_parameter_set_id: non_neg_integer()
}

Functions

height(sps)

@spec height(t()) :: non_neg_integer()

Gets the video width

id(arg)

@spec id(nalu :: binary()) :: non_neg_integer()

Gets the SPS ID.

mime_type(sps, tag)

@spec mime_type(t(), String.t()) :: String.t()

Builds the MIME type from the SPS.

The tag is the first part of the MIME type (e.g. avc1).

parse(nalu)

@spec parse(nalu :: binary()) :: t()

Parses a Sequence Parameter Set (SPS) NALU.

profile(sps)

@spec profile(t()) :: MediaCodecs.H264.profile()

Gets the encoder profile.

width(sps)

@spec width(t()) :: non_neg_integer()

Gets the video width