STATUS_BEGIN_REACHED  475 libavfilter/signature_lookup.c                 status |= STATUS_BEGIN_REACHED;
STATUS_BEGIN_REACHED  494 libavfilter/signature_lookup.c                 status == STATUS_END_REACHED | STATUS_BEGIN_REACHED ||
STATUS_BEGIN_REACHED  510 libavfilter/signature_lookup.c         if (status == (STATUS_END_REACHED | STATUS_BEGIN_REACHED)) {