/*
* eGov suite of products aim to improve the internal efficiency,transparency,
* accountability and the service delivery of the government organizations.
*
* Copyright (C) <2015> eGovernments Foundation
*
* The updated version of eGov suite of products as by eGovernments Foundation
* is available at http://www.egovernments.org
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/ or
* http://www.gnu.org/licenses/gpl.html .
*
* In addition to the terms of the GPL license to be adhered to in using this
* program, the following additional terms are to be complied with:
*
* 1) All versions of this program, verbatim or modified must carry this
* Legal Notice.
*
* 2) Any misrepresentation of the origin of the material is prohibited. It
* is required that all modified versions of this material be marked in
* reasonable ways as different from the original version.
*
* 3) This license does not grant any rights to any user of the program
* with regards to rights under trademark law for use of the trade names
* or trademarks of eGovernments Foundation.
*
* In case of any queries, you can reach eGovernments Foundation at contact@egovernments.org.
*/
package org.egov.infra.utils;
import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
public class ImageUtils {
public static final String JPG_EXTN = ".jpg";
public static InputStream compressImage(InputStream imgInStream) throws IOException {
return compressImage(imgInStream, "compressed_file");
}
public static InputStream compressImage(InputStream imgInStream, String compressedImgFileName) throws IOException {
File compressedImageFile = new File(compressedImgFileName + JPG_EXTN);
try (final ImageOutputStream ios = ImageIO.createImageOutputStream(compressedImageFile)) {
Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName("jpeg");
ImageWriter writer = writers.next();
writer.setOutput(ios);
ImageWriteParam param = writer.getDefaultWriteParam();
param.setCompressionMode(ImageWriteParam.MODE_DEFAULT);
writer.write(null, new IIOImage(ImageIO.read(imgInStream), null, null), param);
imgInStream.close();
writer.dispose();
}
return new FileInputStream(compressedImageFile);
}
}