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();
    }
}