org.nuxeo.ecm.platform.picture
Class ExifHelper

java.lang.Object
  org.nuxeo.ecm.platform.picture.ExifHelper

public class ExifHelper
extends java.lang.Object

Helper to handle the UNDEFINED Exif data type.

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

Author:

btatar

Field Summary

static byte[]	ASCII
static byte[]	JIS
static Log	log
static byte[]	UNDEFINED

Constructor Summary

ExifHelper()

Method Summary

static java.lang.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

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

Field Detail

log

public static final Log log

ASCII

public static final byte[] ASCII

JIS

public static final byte[] JIS

UNDEFINED

public static final byte[] UNDEFINED

Constructor Detail

ExifHelper

public ExifHelper()

Method Detail

decodeUndefined

public static java.lang.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

Returns: