/* Copyright (C) 2005-2011 Fabio Riccardi */
package com.lightcrafts.image.types;
import java.awt.image.RenderedImage;
import java.io.IOException;
import com.lightcrafts.image.BadImageFileException;
import com.lightcrafts.image.ImageInfo;
import com.lightcrafts.image.UnknownImageTypeException;
import com.lightcrafts.image.metadata.*;
import static com.lightcrafts.image.metadata.makernotes.CanonTags.*;
/**
* A <code>CR2ImageType</code> is-a {@link RawImageType} for CR2 (Canon Raw
* version 2) images.
*
* @author Paul J. Lucas [paul@lightcrafts.com]
*/
public final class CR2ImageType extends RawImageType {
////////// public /////////////////////////////////////////////////////////
/** The singleton instance of <code>CR2ImageType</code>. */
public static final CR2ImageType INSTANCE = new CR2ImageType();
/**
* {@inheritDoc}
*/
public String[] getExtensions() {
return EXTENSIONS;
}
/**
* {@inheritDoc}
*/
public String getName() {
return "CR2";
}
/**
* {@inheritDoc}
*/
public RenderedImage getPreviewImage( ImageInfo imageInfo, int maxWidth,
int maxHeight )
throws BadImageFileException, IOException, UnknownImageTypeException
{
//
// Note that this is a weird special case for CR2 files. The tag
// values below are actually stored in the TIFF directory.
//
final ImageMetadataDirectory dir =
imageInfo.getMetadata().getDirectoryFor( TIFFDirectory.class );
if ( dir != null ) {
final RenderedImage image = JPEGImageType.getImageFromBuffer(
imageInfo.getByteBuffer(),
dir.getValue( CANON_CR2_PREVIEW_IMAGE_START ), 0,
dir.getValue( CANON_CR2_PREVIEW_IMAGE_LENGTH ),
maxWidth, maxHeight
);
if ( image != null )
return image;
}
return super.getPreviewImage( imageInfo, maxWidth, maxHeight );
}
public boolean hasFastPreview() {
return true;
}
/**
* {@inheritDoc}
*/
public RenderedImage getThumbnailImage( ImageInfo imageInfo )
throws BadImageFileException, IOException, UnknownImageTypeException
{
return getPreviewImage( imageInfo, 640, 480 );
}
/**
* {@inheritDoc}
*/
/* public RenderedImage getThumbnailImage( ImageInfo imageInfo )
throws BadImageFileException, ColorProfileException, IOException,
UnknownImageTypeException
{
final ImageMetadataDirectory dir =
imageInfo.getMetadata().getDirectoryFor( TIFFDirectory.class );
if ( dir == null ) {
//
// This should never be null, but just in case ...
//
return null;
}
return ((ThumbnailImageProvider)dir).getThumbnailImage( imageInfo );
} */
/**
* Reads all the metadata for a given CR2 image file.
*
* @param imageInfo The image to read the metadata from.
*/
public void readMetadata( ImageInfo imageInfo )
throws BadImageFileException, IOException
{
final TIFFMetadataReader reader = new TIFFMetadataReader( imageInfo );
final ImageMetadata metadata = reader.readMetadata();
MetadataUtil.removePreviewMetadataFrom( metadata );
MetadataUtil.removeWidthHeightFrom( metadata );
}
////////// private ////////////////////////////////////////////////////////
/**
* Construct a <code>CR2ImageType</code>.
* The constructor is <code>private</code> so only the singleton instance
* can be constructed.
*/
private CR2ImageType() {
// do nothing
}
/**
* All the possible filename extensions for CR2 files. All must be lower
* case and the preferred one must be first.
*/
private static final String EXTENSIONS[] = {
"cr2"
};
}
/* vim:set et sw=4 ts=4: */