zmk-steno-engine/src/dict_embed.S
afiqzudinhadi 9bf21c9db2 v4 union split-section dictionary: both full dicts, zero trimming
Format v4 (docs/FORMAT_V4.md): one union CHD MPHF over 226,791 stroke
keys from Plover (147,424) + Lapwing (114,885), sections distributed
across halves. Left blob 387KB (displacements log-class Huffman 59KB,
membership 57KB, fingerprints 113KB, conflicts 9.6KB, value-index
slice 157KB); right blob 515KB (strings front-coded+deflate 193KB,
value-index remainder 324KB, conflicts dup). Shared string table:
73,464 unique translations, Lapwing 93% subset of Plover.

- tools/compile_v4.py: encoder + full verification (all 262,309
  entries byte-exact through cold decode path; hard error if either
  blob exceeds budget — never trims)
- src/dict_v4.c/.h: decoder — canonical Huffman displacement decode,
  conflict binary search, FC block walk, 2-block LRU cache
- src/behavior_steno.c: Plover-style sliding longest-match with
  retrace replaces multi-stroke timeout + prefix checks
- src/split_dict.c/.h: protocol v4 — GET_STRING(string_id) /
  RESOLVE(slot, dict); decisions are 100% left-local, BLE only for
  translation text
- CMake/Kconfig: STENO_DICT_BOTH default, one compiler run emits both
  half blobs; legacy MPHF path kept behind STENO_DICT_V4=n
- Host round-trip test: 42,000 vectors left→right split path,
  0 mismatches (tests/test_dict_v4.c)
2026-07-03 01:28:31 +08:00

30 lines
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ArmAsm

/*
* Copyright (c) 2024 Afiq Zudin Hadi
* SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
*
* Embeds the compiled dictionary blob selected by the build system.
* steno_dict_path.h is generated by CMake and names the blob for this
* half (v4: steno_v4_left.bin / steno_v4_right.bin; legacy MPHF:
* steno_dict.bin). Both symbol spellings are exported: legacy code
* uses _steno_dict_start/_steno_dict_end, dict_v4.c uses
* steno_dict_start/steno_dict_end.
*/
#include "steno_dict_path.h"
.section .rodata.steno_dict, "a", %progbits
.global _steno_dict_start
.global _steno_dict_end
.global steno_dict_start
.global steno_dict_end
.balign 4
_steno_dict_start:
steno_dict_start:
#ifdef STENO_DICT_BIN_PATH
.incbin STENO_DICT_BIN_PATH
#else
.byte 0x00, 0x00, 0x00, 0x00
#endif
_steno_dict_end:
steno_dict_end: