Struct RunModeContext 

pub struct RunModeContext {
    pub a: i32,
    pub n: i32,
    pub nn: i32,
    pub ri_type: i32,
    pub reset: i32,
}

Context for run-interruption mode.

When the codec detects a run of identical pixels and the run ends, it uses a separate set of statistics for coding the interruption sample.

Fields

a: i32

Accumulated |error|.

n: i32

Sample count.

nn: i32

Count of negative errors (used for map).

ri_type: i32

Run interruption type (0 or 1).

reset: i32

Reset threshold.

Implementations

impl RunModeContext

pub fn new(a_init: i32, reset: i32) -> Self

pub fn get_golomb(&self) -> i32

Compute Golomb parameter for run interruption.

pub fn compute_map(&self, err_val: i32, k: i32) -> i32

Compute the map value (whether to add 1 to the mapped error).

pub fn compute_map_negative_e(&self, k: i32) -> bool

Compute the mapped error value for Golomb-Rice coding.

pub fn update_variables(&mut self, err_val: i32, e_mapped: i32)

Update run-mode statistics after coding an error.

Trait Implementations

impl Clone for RunModeContext

fn clone(&self) -> RunModeContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RunModeContext

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

Formats the value using the given formatter.