Base class for reading metadata from image files (JPEG, PNG, GIF). More...

#include <gin_imagemetadata.h>

Inheritance diagram for ImageMetadata:

Public Member Functions
	ImageMetadata (const juce::String &type)
virtual	~ImageMetadata ()
juce::String	getType () const
virtual juce::StringPairArray	getAllMetadata () const =0

Static Public Member Functions
static bool	getFromImage (juce::InputStream &is, juce::OwnedArray< ImageMetadata > &metadata)

Protected Attributes
juce::String	type

Detailed Description

Base class for reading metadata from image files (JPEG, PNG, GIF).

ImageMetadata provides a polymorphic interface for accessing various types of image metadata (EXIF, XMP, IPTC, comments). Different metadata formats are handled by derived classes that parse format-specific data.

The getFromImage() factory method automatically detects and extracts all available metadata types from an image file, returning them as an array of ImageMetadata objects.

Supported metadata formats:

EXIF: Camera settings, GPS, timestamps
XMP: Adobe extensible metadata
IPTC: Press/journalism metadata
Comment: Simple text comments

Usage:

FileInputStream stream(imageFile);
OwnedArray<ImageMetadata> metadata;
 
if (ImageMetadata::getFromImage(stream, metadata))
{
    for (auto* meta : metadata)
    {
        DBG("Metadata type: " + meta->getType());
        StringPairArray data = meta->getAllMetadata();
        for (auto& key : data.getAllKeys())
            DBG(key + ": " + data[key]);
    }
}

See also: ExifMetadata, XmpMetadata, IptcMetadata, CommentMetadata

Constructor & Destructor Documentation

◆ ImageMetadata()

ImageMetadata::ImageMetadata ( const juce::String & type )

References type.

◆ ~ImageMetadata()

virtual ImageMetadata::~ImageMetadata ( )

virtual

Member Function Documentation

◆ getType()

juce::String ImageMetadata::getType ( ) const

References type.

◆ getAllMetadata()

virtual juce::StringPairArray ImageMetadata::getAllMetadata ( ) const

pure virtual

Implemented in CommentMetadata, ExifMetadata, IptcMetadata, and XmpMetadata.

◆ getFromImage()

bool ImageMetadata::getFromImage	(	juce::InputStream &	is,
		juce::OwnedArray< ImageMetadata > &	metadata )

static

Member Data Documentation

◆ type

juce::String ImageMetadata::type

protected

Referenced by IptcMetadata::getAllMetadata(), ExifMetadata::getThumbnailImage(), getType(), and ImageMetadata().

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

gin_imagemetadata.h

Public Member Functions

Static Public Member Functions

Protected Attributes