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feat(codec): PR-X12 A2 mode bit-pack + A3-intra prediction kernel #195

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Merged
AdaWorldAPI merged 5 commits into from
May 22, 2026
Merged

feat(codec): PR-X12 A2 mode bit-pack + A3-intra prediction kernel #195

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26d987f
feat(codec): PR-X12 A2 mode bit-pack + A3-intra prediction kernel
claude May 21, 2026
b39a576
fix(codec): address PR-195 review — overflow Merge alias + mode-sized…
claude May 22, 2026
b44fe59
fix(codec): address owner review on PR-195 — escape allocator + NEWS …
claude May 22, 2026
01c77cc
docs(codec): cross-domain synergies — x265 ⇄ 3DGS ⇄ attention ⇄ SGD
claude May 22, 2026
2423298
fix(codec): address PR-195 follow-up review — bijective pack_leaf + B…
claude May 22, 2026
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17 changes: 14 additions & 3 deletions src/hpc/codec/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,9 +8,13 @@
//! # Module layout (per PR-X12 worker decomposition)
//!
//! - [`ctu`] — A1: `Ctu` carrier + `CtuPartition` enum + quad-tree
//! split / merge ops. **Shipped in this PR.**
//! - `mode`, `predict`, `transform`, `quantize`, `rdo`, `ans`, `stream`
//! — A2-A8, queued as follow-up sprints.
//! split / merge ops.
//! - [`mode`] — A2: bit-pack / unpack helpers for the on-wire 16-bit
//! header + per-mode tail (Skip/Merge/Delta/Escape).
//! - [`predict`] — A3-intra: encoder-side mode-decision kernel that
//! picks the cheapest `LeafCu` from a cell + NESW neighbours.
//! - `transform`, `quantize`, `rdo`, `ans`, `stream` — A4-A8, queued as
//! follow-up sprints.
//!
//! # Feature gate
//!
Expand All @@ -22,6 +26,13 @@
//! `.claude/knowledge/pr-x12-codec-x265-design.md` — master design doc.

pub mod ctu;
pub mod mode;
pub mod predict;

pub use ctu::{CellMode, MergeDir, MAX_QUAD_TREE_NODES, MAX_SPLIT_DEPTH};
pub use ctu::{Ctu, CtuArena, CtuPartition, LeafCu, MaxSplitDepthReached, MergeError, NodeIdx};
pub use mode::{
pack_header, pack_leaf, pack_merge_dir, packed_byte_len, unpack_header, unpack_leaf, unpack_merge_dir, BASIN_NONE,
MAX_BASIN_IDX,
};
pub use predict::{is_no_basin, predict_intra, IntraConfig, IntraContext};
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