ExifHelper (Nuxeo 2021.64.6 API Documentation)

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

```
public class ExifHelper
extends Object
```
Helper to handle the UNDEFINED Exif data type.

Author:

btatar

See Also:

Exif Comments

Field Summary

Fields
Modifier and Type Field Description

static byte[] ASCII

static byte[] JIS

static Log log

static byte[] UNDEFINED

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	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 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