org.apache.shindig.gadgets.rewrite.image

Class JpegImageUtils

java.lang.Object

org.apache.shindig.gadgets.rewrite.image.JpegImageUtils

public class JpegImageUtils
extends Object

Utility functions for jpeg image introspection.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	JpegImageUtils.JpegImageParams
static class	JpegImageUtils.SamplingModes Various subsampling modes supported by Jpeg and the corresponding values for this integer.

Method Summary

Methods

Modifier and Type	Method and Description
static JpegImageUtils.JpegImageParams	getJpegImageData(InputStream is, String filename) This function tries to extract various information from jpeg image like subsampling, jpeg compression quality and whether huffman optimzation is applied on the image data.

Methods inherited from class java.lang.Object

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

Method Detail

getJpegImageData

public static JpegImageUtils.JpegImageParams getJpegImageData(InputStream is,
                                              String filename)
                                                       throws IOException,
                                                              org.apache.sanselan.ImageReadException

This function tries to extract various information from jpeg image like subsampling, jpeg compression quality and whether huffman optimzation is applied on the image data.

Parameters:

is - input stream comprisng the image data.

filename - of the image.

Throws:

IOException

org.apache.sanselan.ImageReadException