Struct MediaCache 

pub struct MediaCache { /* private fields */ }

A bounded decode cache.

Bounded by total decoded bytes rather than entry count: entries differ in size by orders of magnitude, so counting them bounds nothing that matters. Eviction is oldest-inserted-first, which is the right default for a document being read top to bottom.

Implementations

impl MediaCache

pub fn new(budget_bytes: usize) -> Self

pub async fn get( self: &Arc<Self>, path: &Path, target: (u32, u32), format: PixelFormat, ) -> Result<Arc<DecodedImage>, MediaError>

Decoded pixels for path at target, decoding on a blocking thread if they are not cached.

spawn_blocking, not spawn: the editor actor runs on a current_thread runtime, so a plain spawn would land the decode on the actor thread and stall exactly what this crate exists to protect.

pub fn bytes(&self) -> usize

Current cached byte total. Diagnostics and tests.

pub fn clear(&self)

Drop everything — called when the last buffer referencing media closes.