IPTC is a metadata format rather than a image file format. You can find all namespace constants in documentation as like kXMP_NS_DC XMP NameSpace DublinCore etc.Īpple's Image/IO suppose to cover all but for instance you can read byline entry from IPTC with Image/IO however you can't write it. International Press and Telecommunications Council Standards (IPTC) have been created for exchanging different type of information. ImageMeta.GetArrayItem(kXMP_NS_DC, "title", 1, &MyString, 0) If(imageMeta.DoesPropertyExist(kXMP_NS_DC, "title")) See for the official IPTC IIM specification. IPTC information is separated into different records, each of which has its own set of tags. Google for Photoshop AP IPTC to see if you can find the Web page that gives the mapping between the name of the real IPTC field and what Adobe calls them (I randomly ran across it about 4 years ago).
IMAGETYPE AP IPTC CODE
Implementing is little bit tricky but once you add static libraries to your project you can read and write XMP information, it covers IPTC namespace as well upon others namespaces as like dublin-core etc.Īfter you add libraries to project code like this. IPTC information may be found in JPG, TIFF, PNG, MIFF, PS, PDF, PSD, XCF and DNG images. You should use XMP Toolkit SDK, you can find detailed information at adobe SDK page To save the image data to an actual file, you can write the data regularly, e.g: This would write the metadata to the destination image. NSMutableData *resultData = ĬGImageDestinationRef imgDest = CGImageDestinationCreateWithData((_bridge CFMutableDataRef)(resultData), imageType, 1, NULL) įinally, let's assume you've modified the metadata in a new NSDictionary instance (called modifiedMetadata in this example): //copy image dataĬGImageDestinationAddImageFromSource(imgDest, source, 0, (_bridge CFDictionaryRef)(modifiedMetadata)) īOOL success = CGImageDestinationFinalize(imgDest) Then, you copy that data to a new mutable, empty data source: //new empty data to write the final image data to Datasets are defined according to the specification of the IPTC Information Interchange Model (IIM). props will have all the metadata of the image at the destination URL. In the code above, url is the URL of your image file. NSDictionary *props = (_bridge_transfer NSDictionary *) CGImageSourceCopyPropertiesAtIndex(source, 0, NULL) You should first read the metadata from the file: CGImageSourceRef source = CGImageSourceCreateWithURL((_bridge CFURLRef)url, NULL)
0 kommentar(er)
