void ff_generate_sliding_window_mmcos(H264Context *h) { MpegEncContext * const s = &h->s; assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count); h->mmco_index= 0; if(h->short_ref_count && h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count && !(FIELD_PICTURE && !s->first_field && s->current_picture_ptr->f.reference)) { h->mmco[0].opcode= MMCO_SHORT2UNUSED; h->mmco[0].short_pic_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num; h->mmco_index= 1; if (FIELD_PICTURE) { h->mmco[0].short_pic_num *= 2; h->mmco[1].opcode= MMCO_SHORT2UNUSED; h->mmco[1].short_pic_num= h->mmco[0].short_pic_num + 1; h->mmco_index= 2; } } }