Problem 1: ALSA backend showed only 1 device or listed plugins/virtual devices
that don't work for playback (null, lavrate, samplerate, etc.).
Solution: Filter aplay -L output to only include actual playback devices:
- Hardware devices (hw:, plughw:, sysdefault:CARD=, front:CARD=)
- System defaults (default, pipewire, pulse)
- Digital outputs (hdmi:, iec958:, surround)
Problem 2: Quality badge showed file sample rate (e.g., 44.1kHz) instead of
actual hardware sample rate (e.g., 192kHz) when DAC Passthrough was active.
Solution: ExpandedPlayer now polls hardware_sample_rate every second when
DAC Passthrough is enabled and displays the real hardware rate instead of
the file metadata rate.
Changes:
- alsa_backend.rs: Add is_valid_device() filter for playback devices
- ExpandedPlayer.svelte: Poll get_hardware_audio_status every 1s
- ExpandedPlayer.svelte: Use displaySamplingRate (hardware rate when DAC on)
This ensures the quality badge accurately reflects bit-perfect playback status.
vicrodh
01022f2eea