 marfrit
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42b9ec333a
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iter4 Phase 6: 4 commits landed (Z+A+B+C), ffmpeg-vaapi VP9 decode PASS
Fork at marfrit/libva-multiplanar tip beaa914:
- Z (7f8fa93) device-path auto-detect via media controller topology;
walk /dev/media*, MEDIA_IOC_DEVICE_INFO match, MEDIA_IOC_G_TOPOLOGY
-> MEDIA_INTF_T_V4L_VIDEO -> resolve via /sys/dev/char.
LIBVA_V4L2_REQUEST_NO_AUTODETECT=1 escape hatch.
- A (16b3973) src/config.c VP9 enumeration + dispatch + entrypoints.
- B (406d08e) NEW src/vp9.c (~750 LOC: VPX rac + inv_map_table +
uncompressed-header partial parser + compressed-header parser +
vp9_set_controls) + src/vp9.h + meson.build + context.h
(persistent vp9_lf state for Phase 5 C2) + surface.h
(params.vp9 union extension).
- C (beaa914) src/picture.c VP9 dispatcher + 2 buffer-type cases.
NO Commit D — buffer.c allow-list already permissive for VP9's 3
buffer types (Picture, Slice, SliceData; all in iter3 baseline).
Phase 5 amendments all in code: C1 no-XOR direct, C2 persistent
vp9_lf with VP9 spec defaults, C3 out_reference_mode parameter,
C4 NO_AUTODETECT escape, S4 uv_mode memcpy omitted.
Plan amendment to Commit Z section in phase4_iter4_plan.md
documents the canonical media-topology approach (replacing the
original /dev/video* walk).
Verification empirically on fresnel:
- Criterion 1: vainfo enumerates VAProfileVP9Profile0 alongside
H.264 + HEVC under auto-detect rkvdec.
- Criterion 2 (implicit via successful ffmpeg run).
- Criterion 3: ffmpeg-vaapi VP9 5-frame decode exit 0 at
0.307x speed, no ioctl errors.
- Criterion 4: deferred to Phase 7 verification.
- Criterion 5: rkvdec codecs work without env override; hantro
(MPEG-2/VP8) still need env override per iter4-B1 backlog.
Open iter4 backlog: B1 (multi-decoder dispatch refactor),
B2 (mpv-vaapi Could-not-create-device — ffmpeg-vaapi works fine
through same backend, mpv does not), Q6 (per-segment ALT_Q
mapping for non-BBB), COLOR_RANGE (VAAPI gap).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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2026-05-10 06:55:45 +00:00 |
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