Two layered changes, in service of the empirical question "is CLPI
truly redundant with MPLS for label data?":
1. **clpi.rs ProgramInfo parser**. The existing CLPI parser only
walked the EP map (for sector-range lookups). Added a parser for
the ProgramInfo section's per-stream stream_coding_info table:
pid, coding_type, audio_format/rate, video_format/rate, ISO 639-2
language. Spec layout per libbluray clpi_parse.c. Best-effort —
malformed program_info leaves `streams: vec![]`, EP map keeps
working. `ClipInfo` gains a `streams: Vec<ClpiStream>` field.
2. **labels/clpi_audit.rs**. Diagnostic that walks both
`/BDMV/CLIPINF/*.clpi` (via the new program_info parser) and
`/BDMV/PLAYLIST/*.mpls`, builds a (PID → fields) merged view, and
classifies each row:
- `Match`: both sources agree (same coding_type + language)
- `ClpiOnly`: PID in CLPI but no MPLS playlist references it
(orphan stream on disc — reachable via low-level access, not via menu)
- `MplsOnly`: PID in MPLS but no CLPI lists it (would indicate a
parser bug; verified empirically that this NEVER happens)
- `Divergent`: same PID, different coding_type or language between
sources (playlist re-tagged or attribute encoding mismatch)
Surfaced via `labels-analyze` as `clpi_vs_mpls_audit: {matches,
clpi_only, mpls_only, divergent, total_pids}`. Doesn't affect the
label output — pure diagnostic.
Empirical findings on the 11-disc corpus (excl. disc-04 truncated):
- 226 matches / 0 mpls_only / 8 clpi_only / 5 divergent across 239 PIDs
- 6 of 10 non-truncated discs have CLPI-only streams (orphans)
- disc-02 (HDMV-only) is the most dramatic: 40% of its 5 streams are
CLPI-only — MPLS sees 3, CLPI sees 5
- Conclusion: CLPI is NOT truly redundant. ~5% of streams disc-wide
are CLPI-exclusive. Future work: layer CLPI as a tertiary source
below MPLS in the labels pipeline (orphan streams marked with even
lower confidence than MPLS).
- Split AacsError { detail } into 13 specific error variants (AacsCertShort,
AacsAgidAlloc, AacsCertRejected, etc.) with unique error codes E7001-E7012
- Split DiscError { detail } into 7 specific variants (DiscRead, MplsParse,
ClpiParse, UdfNotFound, DiscNoTitles, DiscTitleRange, DiscNoExtents)
- Add WriteError (E5001), KeydbLoad (E8005), MuxLookahead (E9000), MuxWrite (E9001)
- Add OpenDisc API for single-call open+scan+rip workflow
- Remove all English text from error Display impl (code-only output)
- Normalize doc comments to use -- instead of em dash for ASCII consistency
- Size from source_packet_count * 192 (matches libbluray approach)
- metadata_sector_ranges() uses actual metadata partition size from ICB
instead of arbitrary +256 margin (fixes Top Gun missing CLIPINF)
- Store metadata_sectors in UdfFs
- Fix CLPI CPI bit-packed field parsing (partial, EP map still needs work)
MattJackson