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Java Source Code / Java Documentation » Graphic Library » batik » org.apache.batik.ext.awt.image.spi 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.batik.ext.awt.image.spi.AbstractRegistryEntry
      org.apache.batik.ext.awt.image.spi.MagicNumberRegistryEntry

All known Subclasses:   org.apache.batik.ext.awt.image.codec.jpeg.JPEGRegistryEntry,  org.apache.batik.ext.awt.image.codec.imageio.AbstractImageIORegistryEntry,  org.apache.batik.ext.awt.image.codec.tiff.TIFFRegistryEntry,  org.apache.batik.ext.awt.image.codec.png.PNGRegistryEntry,
MagicNumberRegistryEntry
abstract public class MagicNumberRegistryEntry extends AbstractRegistryEntry implements StreamRegistryEntry(Code)
This Image tag registry entry is built around the notion of magic numbers. These are strings of bytes that are at a well known location in the input stream (often the start). This base class can handle the compatiblity check based on a list of Magic Numbers that correspond to your format (Some formats have multiple magic numbers associated with them).
version:
   $Id: MagicNumberRegistryEntry.java 498740 2007-01-22 18:35:57Z dvholten $

Inner Class :public static class MagicNumber

Field Summary
final public static  floatPRIORITY
    
 MagicNumber[]magicNumbers
    

Constructor Summary
public  MagicNumberRegistryEntry(String name, float priority, String ext, String mimeType, int offset, byte[] magicNumber)
     Constructor, simplifies construction of entry when only one extension and one magic number is required.
public  MagicNumberRegistryEntry(String name, String ext, String mimeType, int offset, byte[] magicNumber)
     Constructor, simplifies construction of entry when only one extension and one magic number is required.
public  MagicNumberRegistryEntry(String name, float priority, String ext, String mimeType, MagicNumber[] magicNumbers)
     Constructor, simplifies construction of entry when only one extension is required.
public  MagicNumberRegistryEntry(String name, String ext, String mimeType, MagicNumber[] magicNumbers)
     Constructor, simplifies construction of entry when only one extension is required.
public  MagicNumberRegistryEntry(String name, float priority, String[] exts, String[] mimeTypes, int offset, byte[] magicNumber)
     Constructor, simplifies construction of entry when only one magic number is required.
public  MagicNumberRegistryEntry(String name, String[] exts, String[] mimeTypes, int offset, byte[] magicNumbers)
     Constructor, simplifies construction of entry when only one magic number is required.
public  MagicNumberRegistryEntry(String name, float priority, String[] exts, String[] mimeTypes, MagicNumber[] magicNumbers)
    
public  MagicNumberRegistryEntry(String name, String[] exts, String[] mimeTypes, MagicNumber[] magicNumbers)
    
public  MagicNumberRegistryEntry(String name, String[] exts, String[] mimeTypes, MagicNumber[] magicNumbers, float priority)
     Constructor, allows for overriding the default priority of magic number entries.

Method Summary
public  intgetReadlimit()
     Returns the maximume read ahead needed for all magic numbers.
public  booleanisCompatibleStream(InputStream is)
    

Field Detail
PRIORITY
final public static float PRIORITY(Code)



magicNumbers
MagicNumber[] magicNumbers(Code)
The list of magic numbers associated with this entry




Constructor Detail
MagicNumberRegistryEntry
public MagicNumberRegistryEntry(String name, float priority, String ext, String mimeType, int offset, byte[] magicNumber)(Code)
Constructor, simplifies construction of entry when only one extension and one magic number is required.
Parameters:
  name - Format Name
Parameters:
  priority - the priority of the RegistryEntry
Parameters:
  ext - Standard extension
Parameters:
  mimeType - the supported MIME type
Parameters:
  offset - Offset of magic number
Parameters:
  magicNumber - byte array to match.



MagicNumberRegistryEntry
public MagicNumberRegistryEntry(String name, String ext, String mimeType, int offset, byte[] magicNumber)(Code)
Constructor, simplifies construction of entry when only one extension and one magic number is required.
Parameters:
  name - Format Name
Parameters:
  ext - Standard extension
Parameters:
  mimeType - the supported MIME type
Parameters:
  offset - Offset of magic number
Parameters:
  magicNumber - byte array to match.



MagicNumberRegistryEntry
public MagicNumberRegistryEntry(String name, float priority, String ext, String mimeType, MagicNumber[] magicNumbers)(Code)
Constructor, simplifies construction of entry when only one extension is required.
Parameters:
  name - Format Name
Parameters:
  priority - the priority of the RegistryEntry
Parameters:
  ext - Standard extension
Parameters:
  mimeType - the supported MIME type
Parameters:
  magicNumbers - Array of magic numbers any of which can match.



MagicNumberRegistryEntry
public MagicNumberRegistryEntry(String name, String ext, String mimeType, MagicNumber[] magicNumbers)(Code)
Constructor, simplifies construction of entry when only one extension is required.
Parameters:
  name - Format Name
Parameters:
  ext - Standard extension
Parameters:
  mimeType - the supported MIME type
Parameters:
  magicNumbers - Array of magic numbers any of which can match.



MagicNumberRegistryEntry
public MagicNumberRegistryEntry(String name, float priority, String[] exts, String[] mimeTypes, int offset, byte[] magicNumber)(Code)
Constructor, simplifies construction of entry when only one magic number is required.
Parameters:
  name - Format Name
Parameters:
  priority - the priority of the RegistryEntry
Parameters:
  exts - Standard set of extensions
Parameters:
  mimeTypes - array of supported MIME types
Parameters:
  offset - Offset of magic number
Parameters:
  magicNumber - byte array to match.



MagicNumberRegistryEntry
public MagicNumberRegistryEntry(String name, String[] exts, String[] mimeTypes, int offset, byte[] magicNumbers)(Code)
Constructor, simplifies construction of entry when only one magic number is required.
Parameters:
  name - Format Name
Parameters:
  exts - Standard set of extensions
Parameters:
  mimeTypes - array of supported MIME types
Parameters:
  offset - Offset of magic number
Parameters:
  magicNumbers - byte array to match.



MagicNumberRegistryEntry
public MagicNumberRegistryEntry(String name, float priority, String[] exts, String[] mimeTypes, MagicNumber[] magicNumbers)(Code)
Constructor
Parameters:
  name - Format Name
Parameters:
  priority - the priority of the RegistryEntry
Parameters:
  exts - Standard set of extensions
Parameters:
  mimeTypes - array of supported MIME types
Parameters:
  magicNumbers - array of magic numbers any of which can match.



MagicNumberRegistryEntry
public MagicNumberRegistryEntry(String name, String[] exts, String[] mimeTypes, MagicNumber[] magicNumbers)(Code)
Constructor
Parameters:
  name - Format Name
Parameters:
  exts - Standard set of extensions
Parameters:
  mimeTypes - array of supported MIME types
Parameters:
  magicNumbers - array of magic numbers any of which can match.



MagicNumberRegistryEntry
public MagicNumberRegistryEntry(String name, String[] exts, String[] mimeTypes, MagicNumber[] magicNumbers, float priority)(Code)
Constructor, allows for overriding the default priority of magic number entries. This should be needed very rarely since magic number checks are fairly relyable and hence aren't usually sensative to order issues.
Parameters:
  name - Format Name
Parameters:
  exts - Standard set of extensions
Parameters:
  magicNumbers - array of magic numbers any of which can match.
Parameters:
  priority - The priority of this entry (1000 is baseline)




Method Detail
getReadlimit
public int getReadlimit()(Code)
Returns the maximume read ahead needed for all magic numbers.



isCompatibleStream
public boolean isCompatibleStream(InputStream is) throws StreamCorruptedException(Code)
Check if the stream contains an image that can be handled by this format handler



Fields inherited from org.apache.batik.ext.awt.image.spi.AbstractRegistryEntry
List exts(Code)(Java Doc)
List mimeTypes(Code)(Java Doc)
String name(Code)(Java Doc)
float priority(Code)(Java Doc)

Methods inherited from org.apache.batik.ext.awt.image.spi.AbstractRegistryEntry
public String getFormatName()(Code)(Java Doc)
public List getMimeTypes()(Code)(Java Doc)
public float getPriority()(Code)(Java Doc)
public List getStandardExtensions()(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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