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minstrel/android
bvandeusen 9a31955fa4
android / Build + lint + test (push) Successful in 3m41s
perf(android): gate audio prefetch on isPlaying
Cold-start playback on a fresh install was taking ~25 s before any
audio played. Logcat showed AudioPrefetcher was kicking off N
concurrent CacheWriter jobs the instant setQueue updated uiState --
each prefetch a full upcoming-track download over the same OkHttp
client as the current-track DataSource. Five-way bandwidth split
plus parallel Coil cover fetches starved the current track until
its full file body had streamed through (~12 MB at ~1 MB/s under
contention).

Now reconcile() observes uiState.isPlaying and starts upcoming-track
prefetches only when the current track is actually playing.
Cancellation of out-of-window jobs always runs so a queue switch or
skip still frees the pipe immediately, even while paused. Cold start
should drop from ~25 s -> 5-7 s on the user's network: just the
single-stream throughput plus the one-time TLS/DNS tax.

Refactored the inline reconcile body into computeTargets /
cancelOutOfWindowLocked / startInWindowLocked helpers to keep
ReturnCount under the detekt cap.
2026-06-04 17:29:19 -04:00
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