| #include "match.h" |
| #include <limits.h> |
| |
| typedef unsigned char u8; |
| typedef unsigned int u32; |
| |
| /* generated by mtdev-kernel - do not edit */ |
| static const u8 match_data[] = { |
| 0, 0, 1, 0, 1, 2, 0, 1, 2, 3, 0, 0, 0, 0, 1, 1, |
| 1, 0, 0, 0, 1, 2, 1, 1, 0, 2, 2, 1, 2, 0, 0, 0, |
| 1, 2, 3, 1, 1, 0, 2, 3, 2, 1, 2, 0, 3, 3, 1, 2, |
| 3, 0, 0, 0, 1, 1, 1, 2, 1, 0, 0, 3, 0, 1, 1, 3, |
| 1, 0, 2, 2, 3, 1, 2, 0, 0, 4, 0, 1, 2, 2, 4, 2, |
| 1, 0, 0, 5, 0, 2, 1, 1, 5, 2, 0, 1, 1, 4, 1, 0, |
| 2, 3, 2, 4, 1, 2, 0, 3, 3, 4, 1, 2, 3, 0, 0, 5, |
| 0, 1, 2, 3, 2, 5, 2, 1, 0, 3, 3, 5, 2, 1, 3, 0, |
| 0, 6, 0, 2, 1, 3, 1, 6, 2, 0, 1, 3, 3, 6, 2, 3, |
| 1, 0, 0, 7, 0, 2, 3, 1, 1, 7, 2, 0, 3, 1, 2, 7, |
| 2, 3, 0, 1, 0, 0, 1, 1, 2, 2, 1, 2, 1, 0, 0, 3, |
| 0, 1, 1, 4, 2, 0, 3, 4, 2, 1, 0, 5, 0, 2, 2, 5, |
| 1, 2, 2, 4, 6, 2, 1, 0, 1, 5, 6, 2, 0, 1, 2, 3, |
| 7, 1, 2, 0, 0, 5, 7, 0, 2, 1, 1, 3, 8, 1, 0, 2, |
| 0, 4, 8, 0, 1, 2, 2, 5, 8, 2, 1, 0, 3, 3, 5, 8, |
| 2, 1, 3, 0, 1, 6, 8, 2, 0, 1, 3, 3, 6, 8, 2, 3, |
| 1, 0, 1, 7, 8, 2, 0, 3, 1, 2, 7, 8, 2, 3, 0, 1, |
| 2, 4, 9, 1, 2, 0, 3, 3, 4, 9, 1, 2, 3, 0, 0, 6, |
| 9, 0, 2, 1, 3, 3, 6, 9, 3, 2, 1, 0, 0, 7, 9, 0, |
| 2, 3, 1, 2, 7, 9, 3, 2, 0, 1, 1, 4, 10, 1, 0, 2, |
| 3, 3, 4, 10, 1, 3, 2, 0, 0, 5, 10, 0, 1, 2, 3, 3, |
| 5, 10, 3, 1, 2, 0, 0, 7, 10, 0, 3, 2, 1, 1, 7, 10, |
| 3, 0, 2, 1, 1, 4, 11, 1, 0, 3, 2, 2, 4, 11, 1, 3, |
| 0, 2, 0, 5, 11, 0, 1, 3, 2, 2, 5, 11, 3, 1, 0, 2, |
| 0, 6, 11, 0, 3, 1, 2, 1, 6, 11, 3, 0, 1, 2, 0, 0, |
| 1, 1, 2, 2, 3, 3, 1, 2, 1, 0, 0, 3, 0, 1, 1, 4, |
| 2, 0, 3, 4, 2, 1, 0, 5, 0, 2, 2, 5, 1, 2, 1, 6, |
| 3, 0, 3, 6, 3, 1, 5, 6, 3, 2, 0, 7, 0, 3, 2, 7, |
| 1, 3, 4, 7, 2, 3, 2, 4, 6, 2, 1, 0, 1, 5, 6, 2, |
| 0, 1, 2, 3, 7, 1, 2, 0, 0, 5, 7, 0, 2, 1, 1, 3, |
| 8, 1, 0, 2, 0, 4, 8, 0, 1, 2, 2, 4, 9, 3, 1, 0, |
| 1, 5, 9, 3, 0, 1, 2, 7, 9, 3, 2, 0, 5, 7, 9, 3, |
| 2, 1, 1, 8, 9, 3, 0, 2, 4, 8, 9, 3, 1, 2, 2, 3, |
| 10, 1, 3, 0, 0, 5, 10, 0, 3, 1, 2, 6, 10, 2, 3, 0, |
| 5, 6, 10, 2, 3, 1, 0, 8, 10, 0, 3, 2, 3, 8, 10, 1, |
| 3, 2, 1, 3, 11, 1, 0, 3, 0, 4, 11, 0, 1, 3, 1, 6, |
| 11, 2, 0, 3, 4, 6, 11, 2, 1, 3, 0, 7, 11, 0, 2, 3, |
| 3, 7, 11, 1, 2, 3, 3, 6, 9, 12, 3, 2, 1, 0, 2, 7, |
| 9, 12, 3, 2, 0, 1, 3, 5, 10, 12, 3, 1, 2, 0, 1, 7, |
| 10, 12, 3, 0, 2, 1, 2, 5, 11, 12, 3, 1, 0, 2, 1, 6, |
| 11, 12, 3, 0, 1, 2, 3, 6, 8, 13, 2, 3, 1, 0, 2, 7, |
| 8, 13, 2, 3, 0, 1, 3, 4, 10, 13, 1, 3, 2, 0, 0, 7, |
| 10, 13, 0, 3, 2, 1, 2, 4, 11, 13, 1, 3, 0, 2, 0, 6, |
| 11, 13, 0, 3, 1, 2, 3, 5, 8, 14, 2, 1, 3, 0, 1, 7, |
| 8, 14, 2, 0, 3, 1, 3, 4, 9, 14, 1, 2, 3, 0, 0, 7, |
| 9, 14, 0, 2, 3, 1, 1, 4, 11, 14, 1, 0, 3, 2, 0, 5, |
| 11, 14, 0, 1, 3, 2, 2, 5, 8, 15, 2, 1, 0, 3, 1, 6, |
| 8, 15, 2, 0, 1, 3, 2, 4, 9, 15, 1, 2, 0, 3, 0, 6, |
| 9, 15, 0, 2, 1, 3, 1, 4, 10, 15, 1, 0, 2, 3, 0, 5, |
| 10, 15, 0, 1, 2, 3, |
| }; |
| |
| /* generated by mtdev-kernel - do not edit */ |
| static const int match_index[][5] = { |
| { 0, 0, 1, 3, 6 }, |
| { 10, 10, 12, 18, 30 }, |
| { 50, 50, 54, 62, 92 }, |
| { 164, 164, 170, 194, 230 }, |
| { 398, 398, 406, 454, 598 }, |
| { 790 } |
| }; |
| |
| static void set_dist(u32 *dist, |
| const struct trk_coord *b1, const struct trk_coord *e1, |
| const struct trk_coord *b2, const struct trk_coord *e2) |
| { |
| const struct trk_coord *p, *q; |
| |
| for (p = b1; p != e1; p++) |
| for (q = b2; q != e2; q++) |
| *dist++ = abs(q->x - p->x) + abs(q->y - p->y); |
| } |
| |
| const u8 *mtdev_match_four(const struct trk_coord *old, int nslot, |
| const struct trk_coord *pos, int npos) |
| { |
| u32 d[16], obj, t; |
| const u8 *p, *b, *e; |
| const int *at; |
| |
| set_dist(d, old, old + nslot, pos, pos + npos); |
| |
| at = &match_index[nslot][npos]; |
| b = &match_data[at[0]]; |
| e = &match_data[at[1]]; |
| |
| obj = UINT_MAX, p = b; |
| |
| switch (minval(nslot, npos)) { |
| case 1: |
| for (; b != e; b += npos) { |
| t = d[*b++]; |
| if (t < obj) |
| obj = t, p = b; |
| } |
| break; |
| case 2: |
| for (; b != e; b += npos) { |
| t = d[*b++], t += d[*b++]; |
| if (t < obj) |
| obj = t, p = b; |
| } |
| break; |
| case 3: |
| for (; b != e; b += npos) { |
| t = d[*b++], t += d[*b++], t += d[*b++]; |
| if (t < obj) |
| obj = t, p = b; |
| } |
| break; |
| case 4: |
| for (; b != e; b += npos) { |
| t = d[*b++], t += d[*b++], t += d[*b++], t += d[*b++]; |
| if (t < obj) |
| obj = t, p = b; |
| } |
| break; |
| } |
| |
| return p; |
| } |