Struct Av1SequenceHeader 

pub struct Av1SequenceHeader {

    pub seq_profile: u8,
    pub still_picture: bool,
    pub reduced_still_picture_header: bool,
    pub max_frame_width_minus1: u32,
    pub max_frame_height_minus1: u32,
    pub seq_level_idx_0: u8,
    pub seq_tier_0: u8,
    pub bit_depth: u8,
    pub monochrome: bool,
    pub color_primaries: u8,
    pub transfer_characteristics: u8,
    pub matrix_coefficients: u8,
    pub color_range: bool,
    pub chroma_subsampling_x: bool,
    pub chroma_subsampling_y: bool,
    pub film_grain_params_present: bool,
    pub enable_filter_intra: bool,
    pub enable_intra_edge_filter: bool,
    pub enable_interintra_compound: bool,
    pub enable_masked_compound: bool,
    pub enable_warped_motion: bool,
    pub enable_dual_filter: bool,
    pub enable_order_hint: bool,
    pub enable_jnt_comp: bool,
    pub enable_ref_frame_mvs: bool,
    pub enable_superres: bool,
    pub enable_cdef: bool,
    pub enable_restoration: bool,
    pub order_hint_bits: u8,
    pub seq_force_screen_content_tools: u8,
    pub seq_force_integer_mv: u8,
    pub frame_width_bits_minus_1: u8,
    pub frame_height_bits_minus_1: u8,
    pub use_128x128_superblock: bool,
    pub separate_uv_delta_q: bool,
}

Parsed AV1 sequence header fields (from OBU type 1, §5.5.2). Minimum subset needed to build StdVideoAV1SequenceHeader for Vulkan AV1 decode session parameters.

Fields

seq_profile: u8

still_picture: bool

reduced_still_picture_header: bool

max_frame_width_minus1: u32

max_frame_height_minus1: u32

seq_level_idx_0: u8

seq_tier_0: u8

seq_tier[0] from AV1 §5.5.1. Only carried in the bitstream when seq_level_idx_0 > 7 (i.e. level >= 4.0); below that the spec says tier is implicitly 0 (Main). 0 = Main, 1 = High. Required for the AV1 ISOBMFF codec string av01.P.LLT.DD... (the T character).

bit_depth: u8

monochrome: bool

color_primaries: u8

transfer_characteristics: u8

matrix_coefficients: u8

color_range: bool

chroma_subsampling_x: bool

chroma_subsampling_y: bool

film_grain_params_present: bool

enable_filter_intra: bool

enable_intra_edge_filter: bool

enable_interintra_compound: bool

enable_masked_compound: bool

enable_warped_motion: bool

enable_dual_filter: bool

enable_order_hint: bool

enable_jnt_comp: bool

enable_ref_frame_mvs: bool

enable_superres: bool

enable_cdef: bool

enable_restoration: bool

order_hint_bits: u8

seq_force_screen_content_tools: u8

Per AV1 §5.5.1: 0 = all frames block screen-content tools, 1 = all frames enable them, 2 = SELECT (each frame signals its own bit in the uncompressed_header). Our frame-header parser reads a per-frame bit only when this field == 2.

seq_force_integer_mv: u8

0 = all frames force non-integer MV, 1 = all force integer, 2 = SELECT. Only relevant when screen-content tools allow.

frame_width_bits_minus_1: u8

Bit-width of max_frame_width_minus_1 / max_frame_height_minus_1 fields in the sequence header. Vulkan’s Std SPS requires these to match so the session parameters object is byte-compatible with what the driver re-parses from the bitstream.

frame_height_bits_minus_1: u8

use_128x128_superblock: bool

separate_uv_delta_q: bool

AV1 §5.5.2 color_config bit — signals that U and V planes carry separate q-delta values. Feeds StdVideoAV1ColorConfigFlags.separate_uv_delta_q which the Vulkan AV1 decoder reads at session-parameters creation.

Trait Implementations

impl Clone for Av1SequenceHeader

fn clone(&self) -> Av1SequenceHeader

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Av1SequenceHeader

impl Debug for Av1SequenceHeader

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Av1SequenceHeader

impl PartialEq for Av1SequenceHeader

fn eq(&self, other: &Av1SequenceHeader) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Av1SequenceHeader