static void init_block_index(VC1Context *v) { MpegEncContext *s = &v->s; ff_init_block_index(s); if (v->field_mode && !(v->second_field ^ v->tff)) { s->dest[0] += s->current_picture_ptr->f.linesize[0]; s->dest[1] += s->current_picture_ptr->f.linesize[1]; s->dest[2] += s->current_picture_ptr->f.linesize[2]; } }