| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.xmlgraphics.image.codec.util; |
| |
| import java.awt.image.ColorModel; |
| import java.awt.image.Raster; |
| import java.awt.image.RenderedImage; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| /** |
| * A partial implementation of the ImageEncoder interface useful for |
| * subclassing. |
| * |
| * <p><b> This class is not a committed part of the JAI API. It may |
| * be removed or changed in future releases of JAI.</b> |
| */ |
| public abstract class ImageEncoderImpl implements ImageEncoder { |
| |
| /** The OutputStream associcted with this ImageEncoder. */ |
| protected OutputStream output; |
| |
| /** The ImageEncodeParam object associcted with this ImageEncoder. */ |
| protected ImageEncodeParam param; |
| |
| /** |
| * Constructs an ImageEncoderImpl with a given OutputStream |
| * and ImageEncoderParam instance. |
| */ |
| public ImageEncoderImpl(OutputStream output, |
| ImageEncodeParam param) { |
| this.output = output; |
| this.param = param; |
| } |
| |
| /** |
| * Returns the current parameters as an instance of the |
| * ImageEncodeParam interface. Concrete implementations of this |
| * interface will return corresponding concrete implementations of |
| * the ImageEncodeParam interface. For example, a JPEGImageEncoder |
| * will return an instance of JPEGEncodeParam. |
| */ |
| public ImageEncodeParam getParam() { |
| return param; |
| } |
| |
| /** |
| * Sets the current parameters to an instance of the |
| * ImageEncodeParam interface. Concrete implementations |
| * of ImageEncoder may throw a RuntimeException if the |
| * params argument is not an instance of the appropriate |
| * subclass or subinterface. For example, a JPEGImageEncoder |
| * will expect param to be an instance of JPEGEncodeParam. |
| */ |
| public void setParam(ImageEncodeParam param) { |
| this.param = param; |
| } |
| |
| /** Returns the OutputStream associated with this ImageEncoder. */ |
| public OutputStream getOutputStream() { |
| return output; |
| } |
| |
| /** |
| * Encodes a Raster with a given ColorModel and writes the output |
| * to the OutputStream associated with this ImageEncoder. |
| */ |
| public void encode(Raster ras, ColorModel cm) throws IOException { |
| RenderedImage im = new SingleTileRenderedImage(ras, cm); |
| encode(im); |
| } |
| |
| /** |
| * Encodes a RenderedImage and writes the output to the |
| * OutputStream associated with this ImageEncoder. |
| */ |
| public abstract void encode(RenderedImage im) throws IOException; |
| } |