ExifMetadata Class Reference

Reads EXIF (Exchangeable Image File Format) metadata from JPEG images. More...

#include <gin_exifmetadata.h>

Inheritance diagram for ExifMetadata:

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

Static Public Member Functions
static ExifMetadata *	create (const juce::uint8 *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 EXIF (Exchangeable Image File Format) metadata from JPEG images.

ExifMetadata extracts camera and image information embedded in JPEG files, including camera settings, GPS coordinates, timestamps, and technical details. EXIF data is commonly generated by digital cameras and smartphones.

Key Features:

• Camera settings (ISO, aperture, shutter speed, focal length)
• GPS coordinates and altitude
• Date/time information
• Camera make and model
• Thumbnail image extraction
• Orientation information

Common EXIF tags include:

• Make, Model: Camera manufacturer and model
• DateTime: When photo was taken
• ExposureTime: Shutter speed
• FNumber: Aperture (f-stop)
• ISOSpeedRatings: ISO sensitivity
• FocalLength: Lens focal length
• GPSLatitude, GPSLongitude: Location data

Usage:

FileInputStream stream(jpegFile);
OwnedArray<ImageMetadata> metadata;
ImageMetadata::getFromImage(stream, metadata);
 
for (auto* meta : metadata)
{
    if (auto* exif = dynamic_cast<ExifMetadata*>(meta))
    {
        StringPairArray data = exif->getAllMetadata();
        String camera = data["Make"] + " " + data["Model"];
        String dateTime = data["DateTime"];
        Image thumbnail = exif->getThumbnailImage();
    }
}

See also

ImageMetadata, XmpMetadata

Constructor & Destructor Documentation

ExifMetadata()

ExifMetadata::ExifMetadata

(

)

~ExifMetadata()

virtual ExifMetadata::~ExifMetadata ( )

virtual

Member Function Documentation

create()

static ExifMetadata * ExifMetadata::create ( const juce::uint8 *  data, int  sz  )

static

getAllMetadata()

juce::StringPairArray ExifMetadata::getAllMetadata ( ) const

virtual

Implements ImageMetadata.

getThumbnailImage()

juce::Image ExifMetadata::getThumbnailImage

(

)

---

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

• gin_exifmetadata.h