XmpMetadata Class Reference

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"];
    }
}

See also

ImageMetadata, ExifMetadata, IptcMetadata

Constructor & Destructor Documentation

XmpMetadata()

XmpMetadata::XmpMetadata

(

)

~XmpMetadata()

virtual XmpMetadata::~XmpMetadata ( )

virtual

Member Function Documentation

createFromJpg()

static XmpMetadata * XmpMetadata::createFromJpg ( const juce::uint8 *  data, int  sz  )

static

createFromPng()

static XmpMetadata * XmpMetadata::createFromPng ( const char *  data, int  sz  )

static

getAllMetadata()

juce::StringPairArray XmpMetadata::getAllMetadata ( ) const

virtual

Implements ImageMetadata.

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The documentation for this class was generated from the following file:

• gin_xmpmetadata.h