jif df06bb054c Initialize media estimates outside the global cache lock (#47856) ...

## Why

Image and audio estimate cache misses computed values while holding the cache mutex, blocking access to unrelated keys during initialization.

## What changed

Add `BlockingLruCache::get_or_init` using `Arc<OnceLock<V>>` and migrate the image and audio estimate caches to it. Initialization and same-key waits run in a Tokio blocking region after releasing the cache mutex. Callers share initialization while an entry remains cached; eviction can allow another initialization, so factories must be deterministic.

## Testing

Add a concurrency test covering access to other keys during initialization, eviction of an in-flight entry, and successful completion of both the evicted initializer and its replacement.

GitOrigin-RevId: 079226a58828b854eddc2b501079527bcbe5e603

2026-09-24 14:58:04 +00:00

..

src

Initialize media estimates outside the global cache lock (#47856)

2026-09-24 14:58:04 +00:00

BUILD.bazel

Extract audio preparation into a utility crate (#36807)

2026-08-03 22:46:26 +00:00

Cargo.toml

Extract audio preparation into a utility crate (#36807)

2026-08-03 22:46:26 +00:00