org.apache.shindig.gadgets.rewrite.image
Class BasicImageRewriter

java.lang.Object
  org.apache.shindig.gadgets.rewrite.image.BasicImageRewriter

All Implemented Interfaces:

ResponseRewriter

public class BasicImageRewriter
extends Object
implements ResponseRewriter

Rewrite images to more efficiently compress their content. Can output to a different format file for better efficiency.

Security Note: Uses the Sanselan library to parse image content and metadata to avoid security issues in the ImageIO library. Uses ImageIO for output.

Constructor Summary

BasicImageRewriter(OptimizerConfig config)

Method Summary

protected BufferedImage	readBmp(HttpResponseBuilder response)
protected BufferedImage	readGif(HttpResponseBuilder response)
protected BufferedImage	readImage(org.apache.sanselan.ImageFormat imageFormat, HttpResponseBuilder response)
protected BufferedImage	readJpeg(HttpResponseBuilder response)
protected BufferedImage	readPng(HttpResponseBuilder response)
void	rewrite(HttpRequest request, HttpResponseBuilder response)

Methods inherited from class java.lang.Object

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

Constructor Detail

BasicImageRewriter

@Inject
public BasicImageRewriter(OptimizerConfig config)

Method Detail

rewrite

public void rewrite(HttpRequest request,
                    HttpResponseBuilder response)

Specified by:

rewrite in interface ResponseRewriter

readImage

protected BufferedImage readImage(org.apache.sanselan.ImageFormat imageFormat,
                                  HttpResponseBuilder response)
                           throws org.apache.sanselan.ImageReadException,
                                  IOException

Throws:

org.apache.sanselan.ImageReadException

IOException

readBmp

protected BufferedImage readBmp(HttpResponseBuilder response)
                         throws org.apache.sanselan.ImageReadException,
                                IOException

Throws:

org.apache.sanselan.ImageReadException

IOException

readPng

protected BufferedImage readPng(HttpResponseBuilder response)
                         throws org.apache.sanselan.ImageReadException,
                                IOException

Throws:

org.apache.sanselan.ImageReadException

IOException

readGif

protected BufferedImage readGif(HttpResponseBuilder response)
                         throws org.apache.sanselan.ImageReadException,
                                IOException

Throws:

org.apache.sanselan.ImageReadException

IOException

readJpeg

protected BufferedImage readJpeg(HttpResponseBuilder response)
                          throws org.apache.sanselan.ImageReadException,
                                 IOException

Throws:

org.apache.sanselan.ImageReadException

IOException