org.nuxeo.ecm.platform.picture

Class ExifHelper

java.lang.Object

org.nuxeo.ecm.platform.picture.ExifHelper

public class ExifHelper
extends Object

Helper to handle the UNDEFINED Exif data type.

See ://www.leadtools.com/help/leadtools/v15/Main/API/Dllaux/ExifComments.htm.

Author:

btatar

Field Summary

Fields

Modifier and Type	Field and Description
static byte[]	ASCII
static byte[]	JIS
static org.apache.commons.logging.Log	log
static byte[]	UNDEFINED

Method Summary

Modifier and Type	Method and Description
static String	decodeUndefined(byte[] rawBytes) Method used to perform the decode of the Exif User comment data type.
static byte[]	extractBytes(byte[] bytes, int beginIndex, int endIndex) Extracts the bytes from the received byte array.

Methods inherited from class java.lang.Object

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

Field Detail

log

public static final org.apache.commons.logging.Log log

ASCII

public static final byte[] ASCII

JIS

public static final byte[] JIS

UNDEFINED

public static final byte[] UNDEFINED

Method Detail

decodeUndefined

public static String decodeUndefined(byte[] rawBytes)

Method used to perform the decode of the Exif User comment data type. The first eight bytes specify the data format, and the remainder of the comment is in the specified format.The first eight bytes can be any of the following cases: 65, 83, 67, 73, 73, 0, 0, 0 = ASCII 74, 73, 83, 0, 0, 0, 0, 0 = JIS 0, 0, 0, 0, 0, 0, 0, 0 = UNDEFINED

Parameters:

rawBytes - the user comment represented as a byte array

Returns:

the user comment as a String on the format retrieved from the data type.

extractBytes

public static byte[] extractBytes(byte[] bytes,
                                  int beginIndex,
                                  int endIndex)

Extracts the bytes from the received byte array. The first argument represents the starting location (zero-based) and the second argument represent the ending location which is not zero based.

Parameters:

bytes - the byte array

beginIndex - the begin index which is zero based

endIndex - the end index which is not zero based