static void decode_sigpass(Jpeg2000T1Context *t1, int width, int height, int bpno, int bandno, int vert_causal_ctx_csty_symbol) { int mask = 3 << (bpno - 1), y0, x, y; for (y0 = 0; y0 < height; y0 += 4) for (x = 0; x < width; x++) for (y = y0; y < height && y < y0 + 4; y++) { int flags_mask = -1; if (vert_causal_ctx_csty_symbol && y == y0 + 3) flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE | JPEG2000_T1_SGN_S); if ((t1->flags[y+1][x+1] & JPEG2000_T1_SIG_NB & flags_mask) && !(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) { if (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1] & flags_mask, bandno))) { int xorbit, ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y+1][x+1] & flags_mask, &xorbit); if (t1->mqc.raw) t1->data[y][x] = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ? -mask : mask; else t1->data[y][x] = (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ^ xorbit) ? -mask : mask; ff_jpeg2000_set_significance(t1, x, y, t1->data[y][x] < 0); } t1->flags[y + 1][x + 1] |= JPEG2000_T1_VIS; } } }
static void decode_sigpass(Jpeg2000T1Context *t1, int width, int height, int bpno, int bandno, int vert_causal_ctx_csty_symbol) { int mask = 3 << (bpno - 1), y0, x, y; for (y0 = 0; y0 < height; y0 += 4) for (x = 0; x < width; x++) for (y = y0; y < height && y < y0 + 4; y++) { int flags_mask = -1; if (vert_causal_ctx_csty_symbol && y == y0 + 3) flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE | JPEG2000_T1_SGN_S); if ((t1->flags[y+1][x+1] & JPEG2000_T1_SIG_NB & flags_mask) && !(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) { if (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1] & flags_mask, bandno))) { int xorbit, ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y+1][x+1] & flags_mask, &xorbit); if (t1->mqc.raw) t1->data[y][x] = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ? -mask : mask; else t1->data[y][x] = (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ^ xorbit) ? -mask : mask; ff_jpeg2000_set_significance(t1, x, y, t1->data[y][x] < 0); } t1->flags[y + 1][x + 1] |= JPEG2000_T1_VIS; } } }