Struct SliceWalkStats 

pub struct SliceWalkStats {

    pub ctus: u32,
    pub split_cu_flag_bins: u32,
    pub coding_units: u32,
    pub cbf_luma_bins: u32,
    pub cbf_chroma_bins: u32,
    pub cu_qp_delta_abs_bins: u32,
    pub intra_pred_mode_bins: u32,
    pub ibc_flag_bins: u32,
    pub ibc_cus: u32,
    pub ibc_abs_mvd_bins: u32,
    pub ibc_mvd_sign_bins: u32,
    pub coeff_runs: u32,
    pub alf_ctb: AlfCtbStats,
    pub end_of_tile_bits: u32,
    pub tile_byte_alignments: u32,
    pub hmvp_resets: u32,
}

Counters reported back to the caller after a successful walk. Each one is incremented every time the walker consumes the corresponding syntax element from the CABAC stream — handy for hand-built fixture tests.

Fields

ctus: u32

Coding-tree units actually visited.

split_cu_flag_bins: u32

split_cu_flag bins decoded (one per non-leaf split point).

coding_units: u32

coding_unit() invocations (luma + chroma trees combined for an I slice in dual-tree mode).

cbf_luma_bins: u32

cbf_luma bins decoded.

cbf_chroma_bins: u32

cbf_cb + cbf_cr bins decoded.

cu_qp_delta_abs_bins: u32

cu_qp_delta_abs bins decoded (per CU when enabled).

intra_pred_mode_bins: u32

intra_pred_mode bins decoded (per luma CU under sps_eipd=0).

ibc_flag_bins: u32

ibc_flag regular bins decoded per §7.3.8.4 line 2845 (gated on the round-90 isIbcAllowed predicate). One per IBC-eligible CU.

ibc_cus: u32

Coding units that resolved CuPredMode == MODE_IBC after ibc_flag = 1. Disjoint from the intra count tracked via intra_pred_mode_bins.

ibc_abs_mvd_bins: u32

abs_mvd_l0[0/1] EG-0 bypass invocations consumed by the IBC coding_unit() branch (two per IBC CU — x and y components).

ibc_mvd_sign_bins: u32

mvd_l0_sign_flag bypass bits consumed by the IBC coding_unit() branch (one per non-zero abs_mvd component).

coeff_runs: u32

Total coefficient runs consumed via residual_coding_rle().

alf_ctb: AlfCtbStats

Per-CTU alf_ctb_* map bins from coding_tree_unit() (§7.3.8.2). Zero unless the slice signals an ALF applicability map (slice_alf_map_flag for luma, etc.).

end_of_tile_bits: u32

end_of_tile_one_bit terminate decisions consumed (§7.3.8.1). One per tile in the slice walk — 1 for a single-tile slice, NumTilesInSlice for a multi-tile slice.

tile_byte_alignments: u32

byte_alignment() invocations between tiles (§7.3.8.1). Equal to NumTilesInSlice − 1 (zero for a single-tile slice): the alignment follows every non-final tile’s end_of_tile_one_bit.

hmvp_resets: u32

NumHmvpCand = 0 resets performed in coding_tree_unit() (§7.3.8.2 lines 2624-2625). The reset fires for every CTB whose luma-sample column equals its tile’s first-CTB column (xCtb == xFirstCtb) — i.e. the leftmost CTB of each CTB row within each tile — clearing the history-based MV predictor list at the start of every new row so HMVP candidates never cross a row (or tile) boundary. One reset per CTB row per tile; for a single-tile slice this equals PicHeightInCtbsY.

Trait Implementations

impl Clone for SliceWalkStats

fn clone(&self) -> SliceWalkStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SliceWalkStats

impl Debug for SliceWalkStats

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

Formats the value using the given formatter.

impl Default for SliceWalkStats

fn default() -> SliceWalkStats

Returns the “default value” for a type.

impl Eq for SliceWalkStats

impl PartialEq for SliceWalkStats

fn eq(&self, other: &SliceWalkStats) -> 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 SliceWalkStats