Struct Pps 

pub struct Pps {
    pub pic_parameter_set_id: u32,
    pub seq_parameter_set_id: u32,
    pub num_ref_idx_l0_default_active_minus1: u32,
    pub pic_init_qp_minus26: i32,
    pub deblocking_filter_control_present_flag: bool,
    pub weighted_bipred_idc: u8,
    pub weighted_pred_flag: bool,
    pub entropy_coding_mode_flag: bool,
    pub transform_8x8_mode_flag: bool,
}

Picture parameter set for a CAVLC, single-slice-group CBP encoder.

Fields

pic_parameter_set_id: u32

seq_parameter_set_id: u32

num_ref_idx_l0_default_active_minus1: u32

pic_init_qp_minus26: i32

deblocking_filter_control_present_flag: bool

weighted_bipred_idc: u8

2 = IMPLICIT weighted bi-prediction (POC-distance weights) — needed so unequal-distance B-frames (bframes > 1) blend correctly; 0 otherwise (keeps the B-less PPS byte-identical, and bframes == 1’s equidistant B gets 32:32 weights == the plain average anyway).

weighted_pred_flag: bool

Explicit weighted prediction for P slices (x264 parity — its weightp default is on). The DECODER side has supported this for months (validated against x264 weightp streams); the encoder emits identity weights except where the per-slice fade estimator finds a real gain.

entropy_coding_mode_flag: bool

CABAC (1) vs CAVLC (0). Set from EncoderConfig::cabac.

transform_8x8_mode_flag: bool

transform_8x8_mode_flag (High-profile PPS extension). Set from EncoderConfig::transform_8x8; requires profile_idc 100.

Implementations

impl Pps

pub fn from_config(cfg: &EncoderConfig) -> Self

Derives the PPS from an encoder configuration.

pub fn write_rbsp(&self, w: &mut BitWriter)

Writes the PPS RBSP (without NAL header) including trailing bits.

pub fn to_nal(&self) -> NalUnit

Builds the PPS as a complete NAL unit.

Trait Implementations

impl Clone for Pps

fn clone(&self) -> Pps

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Pps

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

Formats the value using the given formatter.