/*
 * dav1d_cdef_directions — verbatim transcription of the CDEF
 * directions table from dav1d/src/tables.c (1.4.3, lines 400-414).
 * Provided as a standalone .c so the vendored cdef.S has the
 * symbol to link against without pulling in dav1d's full tables.c
 * (which is 1013 lines and chain-references the entire decoder).
 *
 * Used by both the C reference (cdef_tmpl.c) and the NEON
 * implementation (cdef.S).
 *
 * The table has 12 entries (2 + 8 + 2) because direction indexing
 * wraps modulo 8 with ±2 lookahead for secondary taps; the leading
 * and trailing 2 entries are the wrap-around prefixes/suffixes.
 *
 * License: BSD-2-Clause (matches dav1d upstream).
 */
#include <stdint.h>

const int8_t dav1d_cdef_directions[2 + 8 + 2][2] = {
    {  1 * 12 + 0,  2 * 12 + 0 }, // 6 (wrap prefix)
    {  1 * 12 + 0,  2 * 12 - 1 }, // 7 (wrap prefix)
    { -1 * 12 + 1, -2 * 12 + 2 }, // 0
    {  0 * 12 + 1, -1 * 12 + 2 }, // 1
    {  0 * 12 + 1,  0 * 12 + 2 }, // 2
    {  0 * 12 + 1,  1 * 12 + 2 }, // 3
    {  1 * 12 + 1,  2 * 12 + 2 }, // 4
    {  1 * 12 + 0,  2 * 12 + 1 }, // 5
    {  1 * 12 + 0,  2 * 12 + 0 }, // 6
    {  1 * 12 + 0,  2 * 12 - 1 }, // 7
    { -1 * 12 + 1, -2 * 12 + 2 }, // 0 (wrap suffix)
    {  0 * 12 + 1, -1 * 12 + 2 }, // 1 (wrap suffix)
};