Struct ContextModel 

pub struct ContextModel {
    pub state: u8,
    pub mps: u8,
}

Adaptive probability context model for CABAC (ITU-T H.265, 9.3.1).

Each context stores a 6-bit probability state index (state, 0..=63) and the value of the Most Probable Symbol (mps, 0 or 1).

Fields

state: u8

Probability state index (0 = equiprobable, 63 = most skewed).

mps: u8

Most Probable Symbol value (0 or 1).

Implementations

impl ContextModel

pub fn new(init_value: u8) -> Self

Create a context model from an initialisation value (Table 9-4).

The init_value encodes both slope and offset for deriving the initial state at a given slice QP. When no QP context is available yet, a default QP of 26 is assumed.

pub fn init(&mut self, slice_qp: i32, init_value: u8)

(Re-)initialise the context for a given slice_qp and init_value (ITU-T H.265, 9.3.1.1).

Trait Implementations

impl Clone for ContextModel

fn clone(&self) -> ContextModel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContextModel

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

Formats the value using the given formatter.