Christoffer Martinsson 0cef231cd3
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Add metadata display and optimize CPU usage
Metadata features:
- Display artist, album, title in bottom status bar (left-aligned)
- Display bitrate, codec, sample rate in bottom status bar (right-aligned)
- Fetch metadata from MPV using metadata/by-key properties
- Support both lowercase and uppercase metadata tags

Performance optimizations:
- Split property updates: fast updates (position/duration) vs slow (metadata)
- Update metadata only every 2 seconds instead of every 100ms
- Skip MPV property updates entirely when stopped
- Conditional UI redraws - only when state actually changes
- Variable poll rate: 200ms when stopped, 100ms when playing
- Position update throttling (0.5s minimum change)
- Reduces CPU usage from constant 10 FPS to ~0.1 FPS when idle
2025-12-06 23:07:33 +01:00
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