return;
}
- C = s->current_picture.motion_val[dir][xy - 1 + v->blocks_off];
- A = s->current_picture.motion_val[dir][xy - wrap + v->blocks_off];
+ a_valid = !s->first_slice_line || (n == 2 || n == 3);
+ b_valid = a_valid;
+ c_valid = s->mb_x || (n == 1 || n == 3);
if (mv1) {
if (v->field_mode && mixedmv_pic)
off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
else
off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
+ b_valid = b_valid && s->mb_width > 1;
} else {
//in 4-MV mode different blocks have different B predictor position
switch (n) {
off = -1;
}
}
- B = s->current_picture.motion_val[dir][xy - wrap + off + v->blocks_off];
- a_valid = !s->first_slice_line || (n == 2 || n == 3);
- b_valid = a_valid && (s->mb_width > 1);
- c_valid = s->mb_x || (n == 1 || n == 3);
if (v->field_mode) {
a_valid = a_valid && !is_intra[xy - wrap];
b_valid = b_valid && !is_intra[xy - wrap + off];
}
if (a_valid) {
+ A = s->current_picture.motion_val[dir][xy - wrap + v->blocks_off];
a_f = v->mv_f[dir][xy - wrap + v->blocks_off];
num_oppfield += a_f;
num_samefield += 1 - a_f;
a_f = 0;
}
if (b_valid) {
+ B = s->current_picture.motion_val[dir][xy - wrap + off + v->blocks_off];
b_f = v->mv_f[dir][xy - wrap + off + v->blocks_off];
num_oppfield += b_f;
num_samefield += 1 - b_f;
b_f = 0;
}
if (c_valid) {
+ C = s->current_picture.motion_val[dir][xy - 1 + v->blocks_off];
c_f = v->mv_f[dir][xy - 1 + v->blocks_off];
num_oppfield += c_f;
num_samefield += 1 - c_f;