Files
psxrecomp/runtime/include
Matthew Stanley 5a2c6fd3f0 iso_reader: support multi-FILE cue sheets (redump track-split dumps)
The cue parser kept a single bin_filename that every FILE line
overwrote, so a redump-style dump (one .bin per track) mounted only
the LAST track file - the CD-DA audio bin - as the entire disc: no
ISO9660 filesystem, no boot EXE, black screen at startup (reported
against Tomba! 2, whose USA disc is data + one CD-DA track).

Replace the single ifstream with a BinSegment table: one entry per
FILE line, opened for the reader's lifetime and laid out at cumulative
disc-relative sector offsets in cue order. ReadSector/ReadRawSector
resolve a disc LBA to its owning segment; INDEX times, which a cue
states relative to the owning file, are converted to disc-relative
track starts once the segment layout is known. Single-file images are
a one-segment table with unchanged addressing.

Also fixed in passing: Open() never cleared tracks_ from a previous
open (reopening a reader accumulated stale TOC entries), per-read
sector-geometry probing is now computed once per segment, a cue whose
FILE is missing or non-BINARY (WAVE/MP3) fails Open() instead of
mis-mapping the TOC, and GetSectorCount() reports the whole-disc
total.

Verified: Tomba! 2 single-bin dump split at the track-2 boundary
(concatenation SHA1-identical to the original); a host-side test
opens both cues and confirms all 186430 sectors byte-identical and
the TOC identical (track 2 at LBA 174674, audio); the game boots to
intro FMV, title, and attract gameplay from the multi-file dump with
CD audio flowing, and the single-file dump boots identically on the
same binary.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-12 18:29:32 -07:00
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