pic_num_extract   336 libavcodec/h264_refs.c                 frame_num = pic_num_extract(h, pred, &pic_structure);
pic_num_extract   354 libavcodec/h264_refs.c                 long_idx = pic_num_extract(h, pic_id, &pic_structure);
pic_num_extract   640 libavcodec/h264_refs.c             frame_num = pic_num_extract(h, mmco[i].short_pic_num, &structure);
pic_num_extract   672 libavcodec/h264_refs.c             j   = pic_num_extract(h, mmco[i].long_arg, &structure);