Struct SliceWalkInputs 

pub struct SliceWalkInputs {

    pub pic_width: u32,
    pub pic_height: u32,
    pub ctb_log2_size_y: u32,
    pub min_cb_log2_size_y: u32,
    pub max_tb_log2_size_y: u32,
    pub chroma_format_idc: u32,
    pub cu_qp_delta_enabled: bool,
    pub sps_ibc_flag: bool,
    pub log2_max_ibc_cand_size: u32,
    pub slice_alf_enabled_flag: bool,
    pub slice_alf_map_flag: bool,
    pub slice_chroma_alf_enabled_flag: bool,
    pub slice_alf_chroma_map_flag: bool,
    pub slice_chroma2_alf_enabled_flag: bool,
    pub slice_alf_chroma2_map_flag: bool,
}

Static SPS/PPS state that the walker needs to make per-syntax-element decisions. Only the fields actually consulted by the Baseline-profile path are surfaced; the rest are tracked implicitly (e.g. sps_btt_flag = 0 is hard-wired in the walker).

Fields

pic_width: u32

pic_width_in_luma_samples (§7.4.3.1).

pic_height: u32

pic_height_in_luma_samples (§7.4.3.1).

ctb_log2_size_y: u32

CtbLog2SizeY = log2_ctu_size_minus5 + 5 (§7.4.3.1). Default for Baseline is 64×64 → 6.

min_cb_log2_size_y: u32

MinCbLog2SizeY — drives recursion termination. Baseline uses log2_min_cb_size_minus2 + 2 = 2 (4×4 minimum).

max_tb_log2_size_y: u32

MaxTbLog2SizeY — caps the transform unit dimension. Baseline caps at 6 (64×64).

chroma_format_idc: u32

chroma_format_idc (§7.4.3.1). Baseline supports 0 (mono) or 1 (4:2:0).

cu_qp_delta_enabled: bool

cu_qp_delta_enabled_flag (PPS). When false, cu_qp_delta_* is not in the bitstream.

sps_ibc_flag: bool

sps_ibc_flag (§7.4.3.1). When true, the coding_unit() walker evaluates isIbcAllowed (§7.4.5) per-CU and conditionally emits the ibc_flag syntax element. When false (Baseline default), the IBC branch is suppressed wholesale per the SPS gate.

log2_max_ibc_cand_size: u32

log2MaxIbcCandSize = 2 + log2_max_ibc_cand_size_minus2 per eq. 70. Only consulted when sps_ibc_flag is true. The walker gates ibc_flag emission on log2CbWidth ≤ log2MaxIbcCandSize && log2CbHeight ≤ log2MaxIbcCandSize per §7.4.5.

slice_alf_enabled_flag: bool

slice_alf_enabled_flag (§7.4.5). When true (and the SPS-level sps_alf_flag is set, which the slice header enforces) the coding_tree_unit() may carry the per-CTU ALF applicability map.

slice_alf_map_flag: bool

slice_alf_map_flag (§7.4.5). Per §7.3.8.2 line 2626 the luma alf_ctb_flag bin is present in coding_tree_unit() iff slice_alf_enabled_flag && slice_alf_map_flag.

slice_chroma_alf_enabled_flag: bool

sliceChromaAlfEnabledFlag (§7.4.5 derived). Gates alf_ctb_chroma_flag together with slice_alf_chroma_map_flag (line 2628). For Baseline 4:2:0 the chroma map flag is inferred 0 so this only contributes when ChromaArrayType == 3.

slice_alf_chroma_map_flag: bool

slice_alf_chroma_map_flag (§7.4.5). Inferred 0 unless ChromaArrayType == 3.

slice_chroma2_alf_enabled_flag: bool

sliceChroma2AlfEnabledFlag (§7.4.5 derived). Gates alf_ctb_chroma2_flag together with slice_alf_chroma2_map_flag (line 2630).

slice_alf_chroma2_map_flag: bool

slice_alf_chroma2_map_flag (§7.4.5). Inferred 0 unless ChromaArrayType == 3.

Trait Implementations

impl Clone for SliceWalkInputs

fn clone(&self) -> SliceWalkInputs

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SliceWalkInputs

impl Debug for SliceWalkInputs

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

Formats the value using the given formatter.

impl Default for SliceWalkInputs

fn default() -> Self

Returns the “default value” for a type.