dll for reading IPTC metadata 2

To develop a dll for Windows for QUICKLY READING IPTC metadata in JPEG image files. - All IPTC tags must be read (including IPTC custom fields). - I don't want the dll to load the picture, just reading this metadata. - Speed is very important. I don't care about the programming language used (although I want the source code). List of IPTC fields: iptc_byline iptc_bylinetitle iptc_caption iptc_captionwriter iptc_category iptc_city iptc_copyright iptc_country iptc_creationdate iptc_creationtime iptc_credit iptc_exist iptc_copyright iptc_country iptc_creationdate iptc_creationtime iptc_credit iptc_custom01, iptc_custom02 ... iptc_custom20 (20 fields in total) iptc_headline iptc_keywords Iptc_largetext iptc_objectname iptc_originaltransmissionreference iptc_program iptc_provincestate iptc_source iptc_specialinstructions iptc_supplementalcategoriess iptc_urgency iptc_tilesx iptc_tilesy iptc_scenesets iptc_fsi iptc_fw_jobid iptc_fw_masterdocumentid iptc_fw_shortdocumentid iptc_fw_uniquedocumentid iptc_fw_ownerid