rabbit.handler.convert
Class ExternalProcessConverter

java.lang.Object
  rabbit.handler.convert.ExternalProcessConverter

All Implemented Interfaces:

ImageConverter

public class ExternalProcessConverter
extends java.lang.Object
implements ImageConverter

An image converter that runs an external program to do the actual conversion.

Constructor Summary

ExternalProcessConverter(SProperties props)
Create a new ExternalProcessConverter configured from the given properties.

Method Summary

boolean	canConvert() Check if this image converter can do any work.
void	closeStreams(java.lang.Process ps) Close the streams to the external process.
void	convertImage(java.io.File from, java.io.File to, java.lang.String info) Convert an image.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExternalProcessConverter

public ExternalProcessConverter(SProperties props)

Create a new ExternalProcessConverter configured from the given properties.

Parameters:

props - the configuration for this converter

Method Detail

canConvert

public boolean canConvert()

Description copied from interface: ImageConverter

Check if this image converter can do any work.

Specified by:

canConvert in interface ImageConverter

Returns:

true if this image converter can convert.

convertImage

public void convertImage(java.io.File from,
                         java.io.File to,
                         java.lang.String info)
                  throws java.io.IOException

Description copied from interface: ImageConverter

Convert an image.

Specified by:

convertImage in interface ImageConverter

Parameters:

from - the File that holds the source image

to - the File to store the converted image in

info - some identifier for the image (typically the uri)

Throws:

java.io.IOException - if the image conversion fails

closeStreams

public void closeStreams(java.lang.Process ps)
                  throws java.io.IOException

Close the streams to the external process.

Parameters:

ps - the Process that did the image conversion

Throws:

java.io.IOException - if close fails