VAB sound bank Confirmed

Overview

The format itself is documented externally; the Legaia-specific notes are:

• The dominant on-disc carrier is the scene-VAB-prefixed streaming shape - the VAB body is preceded by a 4-byte chunk0 header. crates/vab::parse_header(buf, offset) accepts a starting offset so callers can skip the wrapper.
• A bulk scan finds 1191 VABp headers across 239 PROT entries. Top: 0889_sound_data2 (207), 0891_level_up (206), 0890_sound_data2 (203) - multi-bank archives. The vab_01 cluster (1072..1194) is the standard distributed-bank layout: 120 entries with 1–3 banks each.
• Block names from CDNAME can be misleading; trust the VABp magic rather than the surrounding cluster name.
• The trailing VAG size table (256 × u16) is 1-indexed: vag_table[1..=vs] hold each sample's size in 8-byte units, so vag_table[0] is a reserved leading spacer. It is universally 0 across the retail corpus (986 / 986 VABs, asserted by the disc-gated corpus_vag_spacer test) — it is not a master pitch / sample-rate shift, so no pitch offset is derived from it (VabReport::vag_table_spacer surfaces the raw byte only).

API

use legaia_vab::parse_header;
let header = parse_header(buf, offset)?;
println!("VAB v{} ps={} ts={}", header.version, header.ps, header.ts);

For bulk extraction of every VAB and per-program WAV files, see the vab CLI documented in tooling/extraction.md.

See also