
public class JfifUtil

Util for obtaining information from JPEG file.

Field Summary

Fields
Modifier and Type	Field	Description
`private final Integer`	`MARKER_FIRST_BYTE`
`private final Integer`	`MARKER_ESCAPE_BYTE`
`private final Integer`	`MARKER_SOI`
`private final Integer`	`MARKER_TEM`
`private final Integer`	`MARKER_EOI`
`private final Integer`	`MARKER_SOS`
`private final Integer`	`MARKER_APP1`
`private final Integer`	`MARKER_SOFn`
`private final Integer`	`MARKER_RST0`
`private final Integer`	`MARKER_RST7`
`private final Integer`	`APP1_EXIF_MAGIC`
`public final static JfifUtil`	`INSTANCE`

Method Summary

Modifier and Type	Method	Description
`final static Integer`	`getAutoRotateAngleFromOrientation(Integer orientation)`	Determines auto-rotate angle based on orientation information.
`final static Integer`	`getOrientation(ByteArray jpeg)`	Gets orientation information from jpeg byte array.
`final static Integer`	`getOrientation(InputStream inputStream)`	Get orientation information from jpeg input stream.
`final static Boolean`	`moveToMarker(InputStream inputStream, Integer markerToFind)`	Reads the content of the input stream until specified marker is found.
`final Integer`	`getMARKER_FIRST_BYTE()`	Definitions of jpeg markers as well as overall description of jpeg file format can be found here: Recommendation T.81
`final Integer`	`getMARKER_ESCAPE_BYTE()`
`final Integer`	`getMARKER_SOI()`
`final Integer`	`getMARKER_TEM()`
`final Integer`	`getMARKER_EOI()`
`final Integer`	`getMARKER_SOS()`
`final Integer`	`getMARKER_APP1()`
`final Integer`	`getMARKER_SOFn()`
`final Integer`	`getMARKER_RST0()`
`final Integer`	`getMARKER_RST7()`
`final Integer`	`getAPP1_EXIF_MAGIC()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getAutoRotateAngleFromOrientation
```
 final static Integer getAutoRotateAngleFromOrientation(Integer orientation)
```
    Determines auto-rotate angle based on orientation information.
    
    Parameters:
    
    orientation - orientation information, one of {1, 3, 6, 8}.
  - getOrientation
```
 final static Integer getOrientation(ByteArray jpeg)
```
    Gets orientation information from jpeg byte array.
    
    Parameters:
    
    jpeg - the input byte array of jpeg image
  - getOrientation
```
 final static Integer getOrientation(InputStream inputStream)
```
    Get orientation information from jpeg input stream.
    
    Parameters:
    
    inputStream - the input stream of jpeg image
  - moveToMarker
```
 final static Boolean moveToMarker(InputStream inputStream, Integer markerToFind)
```
    Reads the content of the input stream until specified marker is found. Marker will be consumed and the input stream will be positioned after the specified marker.
    
    Parameters:
    
    inputStream - the input stream to read bytes from
    
    markerToFind - the marker we are looking for
  - getMARKER_FIRST_BYTE
```
 final Integer getMARKER_FIRST_BYTE()
```
    Definitions of jpeg markers as well as overall description of jpeg file format can be found here: Recommendation T.81
  - getMARKER_ESCAPE_BYTE
```
 final Integer getMARKER_ESCAPE_BYTE()
```
  - getMARKER_SOI
```
 final Integer getMARKER_SOI()
```
  - getMARKER_TEM
```
 final Integer getMARKER_TEM()
```
  - getMARKER_EOI
```
 final Integer getMARKER_EOI()
```
  - getMARKER_SOS
```
 final Integer getMARKER_SOS()
```
  - getMARKER_APP1
```
 final Integer getMARKER_APP1()
```
  - getMARKER_SOFn
```
 final Integer getMARKER_SOFn()
```
  - getMARKER_RST0
```
 final Integer getMARKER_RST0()
```
  - getMARKER_RST7
```
 final Integer getMARKER_RST7()
```
  - getAPP1_EXIF_MAGIC
```
 final Integer getAPP1_EXIF_MAGIC()
```

Object JfifUtil

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Method Detail

getAutoRotateAngleFromOrientation

getOrientation

getOrientation

moveToMarker

getMARKER_FIRST_BYTE

getMARKER_ESCAPE_BYTE

getMARKER_SOI

getMARKER_TEM

getMARKER_EOI

getMARKER_SOS

getMARKER_APP1

getMARKER_SOFn

getMARKER_RST0

getMARKER_RST7

getAPP1_EXIF_MAGIC