diegocade1: DSD files (.dsf, ~500MB DSD64) were labeled "Low Quality" and nagged to upgrade.
two independent causes, both fixed (additive — no existing format/behaviour changed):
1) DSF was an unrecognized format -> bottom 'unknown' tier -> "Low Quality":
- source_map: map .dsf/.dff -> 'dsf' (also lights it up in AUDIO_EXTENSIONS, so Soulseek can
match a DSF if one exists)
- model.tier_score: 'dsf' base 102 (just above FLAC) — lands in the lossless range
- probe_audio_quality: add a DSD branch returning format='dsf' (mutagen.dsf for .dsf detail;
.dff classifies lossless without measured detail) instead of None
- settings UI: DSD in RT_LOSSLESS_FORMATS + a "DSD (DSF / DFF)" option in the profile dropdown
2) the actual cause of the screenshot's findings — the truncation guard falsely called DSF
"broken (only ~12% decodes)": ffmpeg decodes DSD to PCM at a different rate than the DSD
container's 2.8 MHz, so astats samples ÷ container-rate massively under-counts. now
detect_broken_audio skips the truncation check for DSD (silence detection still applies).
8 seam tests: dsf/dff -> 'dsf'; dsf tier in lossless range (with + without measured bitrate);
is_dsd_path; and a contrast pair proving the same 12%-decode numbers flag a .flac but skip a
.dsf. 230 quality/import/silence tests green, ruff + JS integrity clean.
b62d9b5b08