First end-to-end hardware decode in this campaign. mpv --hwdec=
vaapi-copy --vo=gpu on bbb_1080p30_h264.mp4 in operator's live
Plasma 6 Wayland session shows the bunny playing — real decoded
NV12 pixel data, not the all-zero (green) or solid-color output
we had all day.
Operator confirmation 2026-05-04: "A big fat white bunny shows up."
Two fork commits got us here:
d41a4b9 — h264: always submit SCALING_MATRIX + populate pps num_ref_idx
9de1be3 — h264: bit-parse slice_header to populate DECODE_PARAMS bit-size fields
The load-bearing fix was 9de1be3 (slice-header bit-parser) — it
populates dec_param->dec_ref_pic_marking_bit_size, idr_pic_id,
pic_order_cnt_bit_size which hantro G1 writes directly into MMIO
registers (G1_REG_DEC_CTRL5_REFPIC_MK_LEN, G1_REG_DEC_CTRL5_IDR_PIC_ID,
G1_REG_DEC_CTRL6_POC_LENGTH).
Phase 1 boolean-correctness criterion now sharpened to require
real-VO pixel-content verification. Met for mpv vaapi-copy in
live session.
Phase 7 verification still owed across the full test corpus
(vainfo, mpv vaapi (no -copy), Firefox, chromium-fourier 149).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
