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/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-present, by David Gilbert and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* ----------------
* EncoderUtil.java
* ----------------
* (C) Copyright 2004-present, by Richard Atkinson and Contributors.
*
* Original Author: Richard Atkinson;
* Contributor(s): -;
*
*/
package org.jfree.chart.encoders;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
/**
* A collection of utility methods for encoding images and returning them as a
* byte[] or writing them directly to an OutputStream.
*/
public class EncoderUtil {
/**
* Encode the image in a specific format.
*
* @param image The image to be encoded.
* @param format The {@link ImageFormat} to use.
*
* @return The byte[] that is the encoded image.
* @throws IOException if there is an IO problem.
*/
public static byte[] encode(BufferedImage image, String format)
throws IOException {
ImageEncoder imageEncoder = ImageEncoderFactory.newInstance(format);
return imageEncoder.encode(image);
}
/**
* Encode the image in a specific format.
*
* @param image The image to be encoded.
* @param format The {@link ImageFormat} to use.
* @param encodeAlpha Whether to encode alpha transparency (not supported
* by all ImageEncoders).
* @return The byte[] that is the encoded image.
* @throws IOException if there is an IO problem.
*/
public static byte[] encode(BufferedImage image, String format,
boolean encodeAlpha) throws IOException {
ImageEncoder imageEncoder = ImageEncoderFactory.newInstance(format,
encodeAlpha);
return imageEncoder.encode(image);
}
/**
* Encode the image in a specific format.
*
* @param image The image to be encoded.
* @param format The {@link ImageFormat} to use.
* @param quality The quality to use for the image encoding (not supported
* by all ImageEncoders).
* @return The byte[] that is the encoded image.
* @throws IOException if there is an IO problem.
*/
public static byte[] encode(BufferedImage image, String format,
float quality) throws IOException {
ImageEncoder imageEncoder = ImageEncoderFactory.newInstance(format,
quality);
return imageEncoder.encode(image);
}
/**
* Encode the image in a specific format.
*
* @param image The image to be encoded.
* @param format The {@link ImageFormat} to use.
* @param quality The quality to use for the image encoding (not supported
* by all ImageEncoders).
* @param encodeAlpha Whether to encode alpha transparency (not supported
* by all ImageEncoders).
* @return The byte[] that is the encoded image.
* @throws IOException if there is an IO problem.
*/
public static byte[] encode(BufferedImage image, String format,
float quality, boolean encodeAlpha) throws IOException {
ImageEncoder imageEncoder = ImageEncoderFactory.newInstance(format,
quality, encodeAlpha);
return imageEncoder.encode(image);
}
/**
* Encode the image in a specific format and write it to an OutputStream.
*
* @param image The image to be encoded.
* @param format The {@link ImageFormat} to use.
* @param outputStream The OutputStream to write the encoded image to.
* @throws IOException if there is an IO problem.
*/
public static void writeBufferedImage(BufferedImage image, String format,
OutputStream outputStream) throws IOException {
ImageEncoder imageEncoder = ImageEncoderFactory.newInstance(format);
imageEncoder.encode(image, outputStream);
}
/**
* Encode the image in a specific format and write it to an OutputStream.
*
* @param image The image to be encoded.
* @param format The {@link ImageFormat} to use.
* @param outputStream The OutputStream to write the encoded image to.
* @param quality The quality to use for the image encoding (not
* supported by all ImageEncoders).
* @throws IOException if there is an IO problem.
*/
public static void writeBufferedImage(BufferedImage image, String format,
OutputStream outputStream, float quality) throws IOException {
ImageEncoder imageEncoder = ImageEncoderFactory.newInstance(format,
quality);
imageEncoder.encode(image, outputStream);
}
/**
* Encode the image in a specific format and write it to an OutputStream.
*
* @param image The image to be encoded.
* @param format The {@link ImageFormat} to use.
* @param outputStream The OutputStream to write the encoded image to.
* @param encodeAlpha Whether to encode alpha transparency (not
* supported by all ImageEncoders).
* @throws IOException if there is an IO problem.
*/
public static void writeBufferedImage(BufferedImage image, String format,
OutputStream outputStream, boolean encodeAlpha) throws IOException {
ImageEncoder imageEncoder = ImageEncoderFactory.newInstance(format,
encodeAlpha);
imageEncoder.encode(image, outputStream);
}
/**
* Encode the image in a specific format and write it to an OutputStream.
*
* @param image The image to be encoded.
* @param format The {@link ImageFormat} to use.
* @param outputStream The OutputStream to write the encoded image to.
* @param quality The quality to use for the image encoding (not
* supported by all ImageEncoders).
* @param encodeAlpha Whether to encode alpha transparency (not supported
* by all ImageEncoders).
* @throws IOException if there is an IO problem.
*/
public static void writeBufferedImage(BufferedImage image, String format,
OutputStream outputStream, float quality, boolean encodeAlpha)
throws IOException {
ImageEncoder imageEncoder = ImageEncoderFactory.newInstance(format,
quality, encodeAlpha);
imageEncoder.encode(image, outputStream);
}
}
