Reads XMP (Extensible Metadata Platform) metadata from JPEG and PNG images. More...

#include <gin_xmpmetadata.h>

Inheritance diagram for XmpMetadata:

Public Member Functions
	XmpMetadata ()
virtual	~XmpMetadata ()
juce::StringPairArray	getAllMetadata () const
Public Member Functions inherited from ImageMetadata
	ImageMetadata (const juce::String &type)
virtual	~ImageMetadata ()
juce::String	getType () const

Static Public Member Functions
static XmpMetadata *	createFromJpg (const juce::uint8 *data, int sz)
static XmpMetadata *	createFromPng (const char *data, int sz)
Static Public Member Functions inherited from ImageMetadata
static bool	getFromImage (juce::InputStream &is, juce::OwnedArray< ImageMetadata > &metadata)

Additional Inherited Members
Protected Attributes inherited from ImageMetadata
juce::String	type

Detailed Description

Reads XMP (Extensible Metadata Platform) metadata from JPEG and PNG images.

XmpMetadata extracts Adobe's XMP data, which provides a standardized way to store metadata across different file formats. XMP is commonly used by Adobe products and professional photography workflows for storing rich metadata.

XMP can contain:

Dublin Core metadata (title, creator, description, keywords)
Rights management information
Adobe-specific data (Lightroom, Photoshop settings)
Custom metadata namespaces
IPTC Core information

The metadata is stored as XML and this class parses it into key-value pairs.

Usage:

FileInputStream stream(imageFile);
OwnedArray<ImageMetadata> metadata;
ImageMetadata::getFromImage(stream, metadata);
 
for (auto* meta : metadata)
{
    if (auto* xmp = dynamic_cast<XmpMetadata*>(meta))
    {
        StringPairArray data = xmp->getAllMetadata();
        String title = data["dc:title"];
        String creator = data["dc:creator"];
        String keywords = data["dc:subject"];
    }
}