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feat(pf-vkdecode): the CPU half of native Vulkan decode — StdVideo conversion + slot map

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M2 WP-A (design/client-native-decode.md §3.2). AuPlan -> StdVideo
parameter sets (owned pointer backings), per-AU decode info with slice
start-code offsets, and a PicId->slot map that never evicts on its own.
Deliberate rejections over silent claims: FMO, separate colour planes,
DPBs deeper than 16 frames (unbounded VUI ue(v)) all fail closed.

pf-bitstream API grew what the review proved necessary: RefPic carries
the true top/bottom field order counts (a single poc fabricated
BottomFieldOrderCnt whenever the PPS signals pic-order deltas), the
>16-frame DPB envelope gate, and an MMCO5 rebase warning.

Adversarial review round two: 8 findings fixed pre-commit, including
transactional slot mutation (an error path could permanently desync
the map) and count/pointer coherence on type-1 POC offsets.

Gates: fmt clean, clippy -D warnings zero, 45+26+21 tests green on
macOS and the linux/amd64 container.
This commit is contained in:
enricobuehler
2026-08-05 15:03:39 +02:00
parent 0a359525a7
commit d24f7fc6ac
8 changed files with 1946 additions and 6 deletions
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@@ -3215,6 +3215,16 @@ dependencies = [
"x11rb",
]
[[package]]
name = "pf-vkdecode"
version = "0.24.0"
dependencies = [
"ash",
"cros-codecs",
"pf-bitstream",
"tracing",
]
[[package]]
name = "pf-win-display"
version = "0.24.0"