Aligning Lock Screen Controls with In-App Playback State
Restructured playback state management so that the mini player and lock screen remote control share a single source of truth, ensuring consistent behavior regardless of which surface initiates a control action.
Playback appears to originate from a single point, but in practice multiple surfaces — the in-app mini player, the lock screen remote control, and Now Playing metadata — all reference the same playback state. When each surface maintains state independently, a control action on the lock screen can fail to propagate to the in-app surface, resulting in visible inconsistency.
This type of inconsistency does not surface in a feature checklist, but it directly undermines playback reliability. The objective was to restructure the flow so that all surfaces reflect a single authoritative playback state. Audio, video, and currently mounted track information were consolidated into a single source, and track loading was updated to ensure all surfaces update in sync rather than at staggered points. The session entry experience was also revised to surface contextual information at the point of entry rather than presenting a flat feature list.
Separately, spatial audio and reverb processing were integrated into the active playback path, and the pre-sleep routine was updated to handle alarm configuration and session persistence as a continuous flow. The net result is consistent playback state across all control surfaces.