nx_h264_cavlc_enc.nx

nx_h264_cavlc_enc.nx -- CAVLC level ENCODER (inverse of nx_h264_cavlc_level's read_level). Exists so the decoder can be gated SOVEREIGNLY: encode known levels -> decode -> must recover exactly (the round-trip oracle, no ffmpeg). level -> levelCode: level>0 -> (level<<1)-2 (even) ; level<=0 -> (-level<<1)-1 (odd) levelCode -> (prefix, suffix) given suffixLength (non-escape, prefix<15): suffixLength==0: prefix = levelCode, no suffix suffixLength>0 : prefix = levelCode >> suffixLength, suffix = low suffixLength bits emit: <prefix zeros><1><suffix bits> Escape (prefix>=15) is NOT emitted here -- callers keep magnitudes in range (flagged); matches the decoder's common path. genealogy_id: itu_t_h264_sec9_2_2_cavlc_level_inverse lineage_id: level_to_levelcode + prefix_suffix_emit license_tier: ORIGINAL