vangel76 7faece80f0 #1039: HEVC interpolation taps without slice arrays ...

Problem: the interpolation filters took their taps as an array of T
slices built per block row with `array::from_fn`. The array went through
the stack and was read back with wider loads than it was written with
(store-forwarding stalls): about 10 % of the 8-tap luma interpolation
time, plus the per-tap Option handling.

Fix: the filters take the taps as a function (row shifted by k, or k-th
row from x), inlined into the multiply-add loop, so the tap addresses stay
in registers. Same arithmetic, same samples.

Tests: the interpolation unit tests (16-bit lanes against the 32-bit
filter, in-place against copied windows), conformance suite, identical
YUV on the five bench streams. User instructions -1 to -4 % on all five;
cycles -2 to -5 % except g250_500 (within the run-to-run noise of the
shared machine).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-11 15:13:58 +02:00

..

cabac.rs

M4.10: HEVC vectorised MC, SAO and output, batched bypass bins, draft mode

2026-10-03 07:38:29 -04:00

decoder.rs

#1039: count HEVC block statistics without branches

2026-10-11 14:53:09 +02:00

dpb.rs

HW5: Linux VA-API HEVC hardware decoding, Main and Main 10 (#30)

2026-10-09 09:00:30 +07:00

error.rs

M9.1: filmcraft-hevc — clean-room H.265 decoder (Main / Main 10)

2026-09-30 10:11:22 -04:00

filter.rs

#1039: store 8-bit HEVC pictures as u8

2026-10-11 14:41:59 +02:00

inter.rs

#1039: HEVC interpolation taps without slice arrays

2026-10-11 15:13:58 +02:00

intra.rs

#1039: store 8-bit HEVC pictures as u8

2026-10-11 14:41:59 +02:00

lib.rs

HW5: Linux VA-API HEVC hardware decoding, Main and Main 10 (#30)

2026-10-09 09:00:30 +07:00

mvpred.rs

#1039: store 8-bit HEVC pictures as u8

2026-10-11 14:41:59 +02:00

params.rs

hevc: never crash — no expect/unwrap in the decoder, deny them

2026-10-04 11:31:02 -04:00

picture.rs

#1039: HEVC motion compensation reads reference lines in place

2026-10-11 14:52:39 +02:00

slice.rs

M9.1: filmcraft-hevc — clean-room H.265 decoder (Main / Main 10)

2026-09-30 10:11:22 -04:00

slicedec.rs

#1039: default HEVC prediction for default explicit weights

2026-10-11 15:06:03 +02:00

spec_tables.rs

M9.1: filmcraft-hevc — clean-room H.265 decoder (Main / Main 10)

2026-09-30 10:11:22 -04:00

synth_tests.rs

M4.10: HEVC vectorised MC, SAO and output, batched bypass bins, draft mode

2026-10-03 07:38:29 -04:00

tables.rs

M9.1: filmcraft-hevc — clean-room H.265 decoder (Main / Main 10)

2026-09-30 10:11:22 -04:00

transform.rs

M4.8: HEVC transform/SAO speed-up, catch-up decoding, perf.stats

2026-10-02 13:01:16 -04:00