ImageTypeDetector

java.lang.Object
- com.itextpdf.io.image.ImageTypeDetector

public final class ImageTypeDetector
extends java.lang.Object

Helper class that detects image type by magic bytes

Field Summary

Fields
Modifier and Type	Field	Description
`private static byte[]`	`bmp`
`private static byte[]`	`gif`
`private static byte[]`	`jbig2`
`private static byte[]`	`jpeg`
`private static byte[]`	`jpeg2000_1`
`private static byte[]`	`jpeg2000_2`
`private static byte[]`	`png`
`private static byte[]`	`tiff_1`
`private static byte[]`	`tiff_2`
`private static byte[]`	`wmf`

Constructor Summary

Constructors
Modifier Constructor Description

private ImageTypeDetector()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static ImageType`	`detectImageType(byte[] source)`	Detect image type by magic bytes given the byte array source.
`static ImageType`	`detectImageType(java.io.InputStream stream)`	Detect image type by magic bytes given the input stream.
`static ImageType`	`detectImageType(java.net.URL source)`	Detect image type by magic bytes given the source URL.
`private static ImageType`	`detectImageTypeByHeader(byte[] header)`
`private static boolean`	`imageTypeIs(byte[] imageType, byte[] compareWith)`
`private static byte[]`	`readImageType(byte[] source)`
`private static byte[]`	`readImageType(java.io.InputStream stream)`
`private static byte[]`	`readImageType(java.net.URL source)`

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

Field Detail

gif
```
private static final byte[] gif
```

jpeg
```
private static final byte[] jpeg
```

jpeg2000_1
```
private static final byte[] jpeg2000_1
```

jpeg2000_2
```
private static final byte[] jpeg2000_2
```

png
```
private static final byte[] png
```

wmf
```
private static final byte[] wmf
```

bmp
```
private static final byte[] bmp
```

tiff_1
```
private static final byte[] tiff_1
```

tiff_2
```
private static final byte[] tiff_2
```

jbig2
```
private static final byte[] jbig2
```

Constructor Detail
- ImageTypeDetector
```
private ImageTypeDetector()
```

Method Detail
- detectImageType
```
public static ImageType detectImageType(byte[] source)
```
  Detect image type by magic bytes given the byte array source.
  
  Parameters:
  
  source - image bytes
  
  Returns:
  
  detected image type, seeImageType. Returns ImageType.NONE if image type is unknown
- detectImageType
```
public static ImageType detectImageType(java.net.URL source)
```
  Detect image type by magic bytes given the source URL.
  
  Parameters:
  
  source - image URL
  
  Returns:
  
  detected image type, seeImageType. Returns ImageType.NONE if image type is unknown
- detectImageType
```
public static ImageType detectImageType(java.io.InputStream stream)
```
  Detect image type by magic bytes given the input stream.
  
  Parameters:
  
  stream - image stream
  
  Returns:
  
  detected image type, seeImageType. Returns ImageType.NONE if image type is unknown
- detectImageTypeByHeader
```
private static ImageType detectImageTypeByHeader(byte[] header)
```
- imageTypeIs
```
private static boolean imageTypeIs(byte[] imageType,
                                   byte[] compareWith)
```
- readImageType
```
private static byte[] readImageType(java.net.URL source)
```
- readImageType
```
private static byte[] readImageType(java.io.InputStream stream)
```
- readImageType
```
private static byte[] readImageType(byte[] source)
```