rusty_h264-encoder-v0.17.2

Other

• encoder speed against 0.17.0 -- all three presets, CPU time and Ir
• drop needless borrows in the B drivers (clippy -D warnings)
• release the plane pools when an encode finishes
• Merge origin/main (v0.17.0, decoder fixes #24-#26) into perf/encoder-ir-veins
• enc V15-3: mb-tree intra cost from the SATD and SAD kernels
• accel V15-2: exact SSD kernels; mb_ssd (the RD trials' distortion) uses them
• enc V15-1: the frame probes' 16x16 SAD runs on the accel kernel
• enc V14-2: the trial rate model walks nonzero levels only
• enc V14-1: the RD snapshot (MbState) as fixed arrays
• enc V13-3: half-pel planes rebuilt into a retired picture's planes
• enc V13-2: reconstruction planes recycled from retired pictures, not re-zeroed
• enc V9-3: significance map coded from the bitmask, split at the last coefficient
• enc V9-2: residual levels visit only the nonzero positions
• enc V9-1: residual blocks build a nonzero bitmask once (popcnt + lzcnt)
• enc V5-3: CABAC writes four bytes per slow-path entry; carries ripple back
• enc V5-2: one packed byte per CABAC context; slow path as a tail call
• enc V5-1: byte-wise CABAC interval coder (x264 low/queue form)
• enc V3-3: lam_r is resolved once per motion search, not per evaluation
• enc V3-2: one bounds-free table for every mvbits cost kind
• enc V3-1: mc_sad prices every interior shape through the SAD kernels
• enc V2-3: macroblock variance moments from an SSE2/NEON kernel
• enc V2-2: the me_wide coherence probe abandons losing shifts too
• enc V2-1: the B-decision global-motion search abandons losing shifts
• enc V1-3: the B bi-average runs pavgb at the implicit weights' midpoint
• enc V1-2: a spatial-direct MB with uniform motion is one 16x16 MC per list
• enc V1-1: spatial direct does one MC per 8x8 quadrant, not per 4x4
• enc V7-3: SatdGrid -- the rescue grid computes kernel values a row at a time
• enc V7-2: separable rate tables for the rescue grid
• enc V7-1: the me_wide rescue grid batches every P partition shape
• enc V6-3: a fused pavgb+psadbw kernel for the quarter-pel SAD
• enc V6-2: the 16x16 SAD reads the source plane in place
• enc V6-1: an 8x8 SAD kernel arm for sad_strided
• enc V11-3: the B 16x16 arm takes the drivers' mvd predictors
• enc V11-2: b_direct takes the neighbour sets the B drivers already built
• enc V11-1: the B_Direct arm reuses the driver's direct prediction
• enc V12-3: one RFF_POLYTIER read per frame, cached RFF_ME_COH_DBG
• enc V12-2: resolve the four B-slice env overrides once per process
• enc V12-1: cache the UNSET RFF_SUBPEL_PAT, not just the set one