nx_h264_zigzag.nx
buildroot/runtime/nx_h264_zigzag.nx
about
nx_h264_zigzag.nx -- 4x4 inverse zig-zag scan (spec 8.5.6 / Table 8-12).
CAVLC residual decode produces coefficients in SCAN order; the inverse
transform needs them in RASTER (row-major) order. raster[ZZ[i]] = scan[i].
ZZ = 0,1,4,8,5,2,3,6,9,12,13,10,7,11,14,15
genealogy_id: itu_t_h264_zigzag_scan_4x4
lineage_id: scan_to_raster_permutation
license_tier: ORIGINAL
dependencies 1 imports · 8 importers
imports: nx_syscalls.nx
imported by: nx_h264_block_e2e_gate.nxnx_h264_brecon.nxnx_h264_decode_frame.nxnx_h264_fdct_gate.nxnx_h264_iframe.nxnx_h264_intra_recon.nxnx_h264_pframe_recon.nxnx_h264_slice_extract.nx
structs
| none |
consts
| none |
functions
| 10 | func nx_h264_inv_zigzag4x4(scan: *i64, raster: *i64) -> i64 called by 19: mainrecon_b_4x4chroma_add_resi16_dc_scalerecon_i16_lumarecon_i4_block+13 calls 1: sys_mmap |