Struct CompactSampleToGroupPattern 

pub struct CompactSampleToGroupPattern {
    pub sample_count: u32,
    pub indices: Vec<u32>,
}

One pattern of a CompactSampleToGroup (csgp, §8.9.5): a run of indices.len() per-sample sample_group_description_index values (the pattern), replicated across sample_count consecutive groups of that length. The pattern therefore covers sample_count * indices.len() samples in total.

pattern_length is implicit from indices.len() (the builder writes it), matching the read side which reconstructs it the same way.

Fields

sample_count: u32

sample_count[i] — number of consecutive groups (each indices.len() samples long) that replay this pattern.

indices: Vec<u32>

sample_group_description_index[i][1..=pattern_length] — one index per sample of the pattern. 0 means “member of no group of this type”; in a traf the index’s most-significant bit (for the chosen field width) distinguishes a fragment-local description (set) from a global one (clear). The raw value is written verbatim — the builder does not synthesise the fragment-local bit.

Trait Implementations

impl Clone for CompactSampleToGroupPattern

fn clone(&self) -> CompactSampleToGroupPattern

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompactSampleToGroupPattern

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

Formats the value using the given formatter.

impl Default for CompactSampleToGroupPattern

fn default() -> CompactSampleToGroupPattern

Returns the “default value” for a type.