"Sam Najafi" <[EMAIL PROTECTED]> writes: Hi Sam (and the PEL devel list)
> I'm working on enabling users to add entries or customizable fields > into an Exif file rather than modifying metadata that is associated > with an existing field or predefined image property. I was wondering > if the PEL library has functions to allow me to do just that, or if > not could you please enlighten me as how I should get around this > problem! So you want to use non-standard fields instead of the standard ones? Then simply assign a tag value greater than 0xF000 to them. PEL will then accept them as custom tags. So something like this (coding off the top of my head...) should work: $entry = new PelEntryAscii(0xF123, 'This is my very own tag...'); $ifd->addEntry($entry); This wont work: $entry = new PelEntryAscii(PelTag::DATE_TIME, 'Hehe, a string in the length...'); $ifd->addEntry($entry); it will fail when such an image is stored and later loaded since PEL will recognize the PelTag::DATE_TIME and expect it to be a proper date. But if you stick to large tag values, then you should be safe. It's not something which I've tested, but I think it works... please report your findings back to me and the PEL devel list. > Unfortunately I'm not very much knowledgeable in terms of Exif > format and image compressions in general. Therefore your kind and > valuable comment is greatly appreciated. > > Kindest Regards, > Sam -- Martin Geisler --- <[EMAIL PROTECTED]> --- http://mgeisler.net Read, write, create Exif data in PHP with PEL: http://pel.sf.net Take control of your webserver with PHP Shell: http://phpshell.sf.net ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ PEL-devel mailing list PEL-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pel-devel