/*
* Copyright (c) 2009-2012 jMonkeyEngine
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.scene.plugins.blender.textures;
import com.jme3.scene.plugins.blender.file.BlenderInputStream;
import com.jme3.texture.Image;
import com.jme3.texture.plugins.AWTLoader;
import com.jme3.texture.plugins.DDSLoader;
import com.jme3.texture.plugins.TGALoader;
import java.io.InputStream;
import java.util.logging.Logger;
/**
* An image loader class. It uses three loaders (AWTLoader, TGALoader and DDSLoader) in an attempt to load the image from the given
* input stream.
*
* @author Marcin Roguski (Kaelthas)
*/
/* package */class ImageLoader extends AWTLoader {
private static final Logger LOGGER = Logger.getLogger(ImageLoader.class.getName());
protected DDSLoader ddsLoader = new DDSLoader(); // DirectX image loader
/**
* This method loads the image from the blender file itself. It tries each loader to load the image.
*
* @param inputStream
* blender input stream
* @param startPosition
* position in the stream where the image data starts
* @param flipY
* if the image should be flipped (does not work with DirectX image)
* @return loaded image or null if it could not be loaded
*/
public Image loadImage(BlenderInputStream inputStream, int startPosition, boolean flipY) {
// loading using AWT loader
inputStream.setPosition(startPosition);
Image result = this.loadImage(inputStream, ImageType.AWT, flipY);
// loading using TGA loader
if (result == null) {
inputStream.setPosition(startPosition);
result = this.loadImage(inputStream, ImageType.TGA, flipY);
}
// loading using DDS loader
if (result == null) {
inputStream.setPosition(startPosition);
result = this.loadImage(inputStream, ImageType.DDS, flipY);
}
if (result == null) {
LOGGER.warning("Image could not be loaded by none of available loaders!");
}
return result;
}
/**
* This method loads an image of a specified type from the given input stream.
*
* @param inputStream
* the input stream we read the image from
* @param imageType
* the type of the image {@link ImageType}
* @param flipY
* if the image should be flipped (does not work with DirectX image)
* @return loaded image or null if it could not be loaded
*/
public Image loadImage(InputStream inputStream, ImageType imageType, boolean flipY) {
Image result = null;
switch (imageType) {
case AWT:
try {
result = this.load(inputStream, flipY);
} catch (Exception e) {
LOGGER.warning("Unable to load image using AWT loader!");
}
break;
case DDS:
try {
result = ddsLoader.load(inputStream);
} catch (Exception e) {
LOGGER.warning("Unable to load image using DDS loader!");
}
break;
case TGA:
try {
result = TGALoader.load(inputStream, flipY);
} catch (Exception e) {
LOGGER.warning("Unable to load image using TGA loader!");
}
break;
default:
throw new IllegalStateException("Unknown image type: " + imageType);
}
return result;
}
/**
* Image types that can be loaded. AWT: png, jpg, jped or bmp TGA: tga DDS: DirectX image files
*
* @author Marcin Roguski (Kaelthas)
*/
private static enum ImageType {
AWT, TGA, DDS;
}
}