Picks α' over the Phase 2 recommendation of β: smaller scope (~50 LOC
vs ~250), targets iter5b's actual bug (wrong OUTPUT format at INITIAL
CreateSurfaces2, not the multi-resolution mid-stream case the
surface.c:164-171 TODO comment anticipates).
Patches:
- C1/C6: NEW src/codec.{h,c} + meson.build — pixelformat_for_profile()
- C2: NEW find_sole_active_profile() static helper in surface.c
- C3: Replace surface.c:173 hardcode with profile-derived lookup
- C5: Extend last_output_* gate with pixelformat
Phase 7 expected post-fix matrix: HEVC + VP9 + VP8 libva == kdirect
== sw (3 codecs unblocked); MPEG-2 unchanged (already worked);
H.264 still race-loses inter frames (Bug 4, deferred to iter6).
Phase 5 review concerns laid out: helper completeness, heap iterator
API, gate semantics, hantro CAPTURE-derivation on correct format,
mpv probe-then-real flow, memory rule placement.
Option β deferral note: cleaner refactor exists but not necessary
for iter5b's bug; defer to future iteration when multi-resolution
mid-stream becomes a target.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
