pdfxlevel = PDF_get_pdi_parameter(p, "pdfx", doc,  1, 0, &len);

none                     

PDF_begin_document( )   

pdfx                                

doc = PDF_process_pdi(p, doc,  1, "action copyoutputintent");

PDF_load_iccprofile( )                                                                                        

PDF_load_iccprofile( )   

usage                

outputintent                               

7.4  PDF/X

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