Lock Screen Controls Stay in Sync with Audio State
Integrated the effects chain into the playback pipeline and unified audio session management with lock screen controls into a single flow.
Audio processing was spread across multiple independent paths. Track loading, audio session management, and spatial/reverb effects each operated on separate timing, causing state mismatches at boundary transitions such as lock screen controls and screen changes.
The fix started at the point where the effects chain connects to the playback pipeline. Track mounting, session activation, spatial effect application, and lock screen metadata updates are now handled in a defined sequence within a single flow. Consolidating previously scattered state decisions into one path made each transition condition explicit and traceable.
These inconsistencies do not appear in feature specifications but directly degrade playback reliability — for example, delayed response to lock screen pause commands or a brief effects gap during track transitions. The goal was to ensure UI state and actual audio state remain consistent regardless of how the user is interacting with the app.