Sub-pixel filter passes run over fixed block widths; frame / region planes are recycled
through a bounded pool (zeroed on reuse) instead of fresh calloc / munmap per frame; the
palette mode-info arrays (40 bytes per 4x4) exist only when screen content tools are allowed;
CDF adaptation is branch-free. Draft mode skips deblocking, CDEF and loop restoration of shown
frames that refresh no reference slot. Media-stack test: VP9 / HEVC / AV1 draft playback only
reaches draft requests, and an export afterwards is bit-exact with ffmpeg.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Frames are published one superblock row at a time once loop filtered; a post stage per frame
(own thread) assembles bands from the tile strips, filters them in raster order and builds the
output picture, while the next frame's tile columns decode and wait per band for the reference
rows they read. Bit-exact with 1, 3 and all threads. Draft mode skips the loop filter of frames
that refresh no reference slot. av1dec / hevcdec bench knobs and VP9 / AV1 4K playback scenarios
in the bench.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
