net.coobird.thumbnailator.util.exif
Class ExifUtils

java.lang.Object
  net.coobird.thumbnailator.util.exif.ExifUtils

public final class ExifUtils
extends Object

An utility class used to obtain the orientation information from a given Exif metadata.

Author:

coobird

Method Summary

static Orientation	getExifOrientation(ImageReader reader, int imageIndex) Returns the orientation obtained from the Exif metadata.
static Orientation	getOrientationFromExif(byte[] exifData) Returns the orientation obtained from the Exif metadata.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getExifOrientation

public static Orientation getExifOrientation(ImageReader reader,
                                             int imageIndex)
                                      throws IOException

Returns the orientation obtained from the Exif metadata.

Parameters:

reader - An ImageReader which is reading the target image.

imageIndex - The index of the image from which the Exif metadata should be read from.

Returns:

The orientation information obtained from the Exif metadata, as a Orientation enum. Returns null if no orientation is found.

Throws:

IOException - When an error occurs during reading.

IllegalArgumentException - If the ImageReader does not have the target image set, or if the reader does not have a JPEG open.

getOrientationFromExif

public static Orientation getOrientationFromExif(byte[] exifData)

Returns the orientation obtained from the Exif metadata.

Parameters:

exifData - A byte array containing Exif data.

Returns:

The orientation information obtained from the Exif metadata, as a Orientation enum. Returns null if no orientation is found.