Enum RleMeta 

pub enum RleMeta {
    Split {
        runs: u32,
        num_rle_values: u32,
    },
}

Metadata for RLE decoding, one variant per RleLayout.

Variants

Split

Tag 0x01: physically-decoded words are [run_len × runs][value × runs]. runs is the split point; num_rle_values is the expanded element count.

Fields

runs: u32

num_rle_values: u32

Implementations

impl RleMeta

pub fn decode<T: PrimInt + Debug>( self, data: &[T], dec: &mut Decoder, ) -> MltResult<Vec<T>>

Decode RLE (Run-Length Encoding) data.

A run-length encoded stream is a sequence of runs, each a (run_len, value) pair that expands to run_len copies of value. The two layouts differ only in how those pairs are arranged in the stream:

logical values:   [7, 7, 7, 9, 5, 5]     runs = 3, num_rle_values = 6
Split (v1):       [3, 1, 2][7, 9, 5]     all run lengths, then all values
Interleaved (v2): [3, 7][1, 9][2, 5]     one (run_len, value) pair per run

Split reads runs from the stream header, so the split point is known up front. Interleaved derives the run count from the data length, which must therefore be even. Both know num_rle_values, the expanded element count that the run lengths must sum to.

Charges the decoder for the expanded output allocation.

Trait Implementations

impl Clone for RleMeta

fn clone(&self) -> RleMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RleMeta

impl Debug for RleMeta

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

Formats the value using the given formatter.

impl PartialEq for RleMeta

fn eq(&self, other: &RleMeta) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for RleMeta