nx_h264_mb.nx

buildroot/runtime/nx_h264_mb.nx

1454 B40 linesdepth 3pulls 3 transitivereach 13 importersview sourcekind librarytopic h264

docs dependencies structs consts functions

about

nx_h264_mb.nx -- H.264 I-slice macroblock type layer (rung 4d, spec 7.3.5 / 7.4.5). mb_type (ue) for an I slice: 0 = I_NxN (Intra_4x4 / Intra_8x8; needs pred-mode signalling + me(v) CBP) 1..24 = I_16x16 (prediction mode + coded_block_pattern derive ARITHMETICALLY) 25 = I_PCM For I_16x16 (mt = mb_type-1, Table 7-11): Intra16x16PredMode = mt % 4 (0 V, 1 H, 2 DC, 3 Plane) CodedBlockPatternChroma = (mt / 4) % 3 (0,1,2) CodedBlockPatternLuma = (mt / 12) * 15 (0 or 15) mb_type itself = ue(v) via the already-gated nx_h264_bits reader. genealogy_id: itu_t_h264_sec7_4_5_mb_pred + table7_11_i16x16 lineage_id: mb_type_classify + i16x16_arith_derive license_tier: ORIGINAL

dependencies 2 imports · 10 importers

imports: nx_syscalls.nxnx_h264_bits.nx

imported by: nx_h264_bframe_walk.nxnx_h264_brecon.nxnx_h264_decode_frame.nxnx_h264_iframe.nxnx_h264_mb_gate.nxnx_h264_mv_recon_gate.nxnx_h264_pframe_recon.nxnx_h264_pframe_walk.nxnx_h264_pmvfield.nxnx_h264_slice_extract.nx

structs

none

consts

18	const NX_MB_I_NXN: i64 = 0
19	const NX_MB_I_16X16: i64 = 1
20	const NX_MB_I_PCM: i64 = 2

functions

22	func nx_h264_mb_type_class(mb_type: i64) -> i64 called by 10: main main main nx_h264_decode_iframe main main+4
29	func nx_h264_i16x16_derive(mb_type: i64, out: *i64) -> i64 called by 10: main main main nx_h264_decode_iframe chk main+4
38	func nx_h264_mb_parse_itype(br: *BitReader) -> i64 called by 4: main nx_h264_decode_iframe main main calls 1: br_read_ue