void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, int x, int y, int negative) { x++; y++; t1->flags[y][x] |= JPEG2000_T1_SIG; if (negative) { t1->flags[y][x + 1] |= JPEG2000_T1_SIG_W | JPEG2000_T1_SGN_W; t1->flags[y][x - 1] |= JPEG2000_T1_SIG_E | JPEG2000_T1_SGN_E; t1->flags[y + 1][x] |= JPEG2000_T1_SIG_N | JPEG2000_T1_SGN_N; t1->flags[y - 1][x] |= JPEG2000_T1_SIG_S | JPEG2000_T1_SGN_S; } else { t1->flags[y][x + 1] |= JPEG2000_T1_SIG_W; t1->flags[y][x - 1] |= JPEG2000_T1_SIG_E; t1->flags[y + 1][x] |= JPEG2000_T1_SIG_N; t1->flags[y - 1][x] |= JPEG2000_T1_SIG_S; } t1->flags[y + 1][x + 1] |= JPEG2000_T1_SIG_NW; t1->flags[y + 1][x - 1] |= JPEG2000_T1_SIG_NE; t1->flags[y - 1][x + 1] |= JPEG2000_T1_SIG_SW; t1->flags[y - 1][x - 1] |= JPEG2000_T1_SIG_SE; }