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/*
* Copyright (C) 2008-2017, Juick
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.juick.server.util;
import com.juick.Attachment;
import org.apache.commons.imaging.ImageReadException;
import org.apache.commons.imaging.Imaging;
import org.apache.commons.imaging.common.ImageMetadata;
import org.apache.commons.imaging.formats.jpeg.JpegImageMetadata;
import org.apache.commons.imaging.formats.tiff.TiffField;
import org.apache.commons.imaging.formats.tiff.constants.TiffTagConstants;
import org.apache.commons.io.FilenameUtils;
import org.imgscalr.Scalr;
import org.imgscalr.Scalr.Rotation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.stream.FileImageInputStream;
import javax.imageio.stream.ImageInputStream;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.util.Iterator;
public class ImageUtils {
private static final Logger logger = LoggerFactory.getLogger(ImageUtils.class);
private String imgDir;
private String tmpDir;
public ImageUtils(String imgDir, String tmpDir) {
this.imgDir = imgDir;
this.tmpDir = tmpDir;
}
/**
* Returns <code>BufferedImage</code>, same as <code>ImageIO.read()</code> does.
*
* <p>JPEG images with EXIF metadata are rotated according to Orientation tag.
*
* @param imageFile a <code>File</code> to read from.
*/
private static BufferedImage readImageWithOrientation(File imageFile)
throws IOException {
BufferedImage image = ImageIO.read(imageFile);
if (!FilenameUtils.getExtension(imageFile.getName()).equals("jpg")) {
return image;
}
try {
ImageMetadata metadata = Imaging.getMetadata(imageFile);
if (metadata instanceof JpegImageMetadata) {
JpegImageMetadata jpegMetadata = (JpegImageMetadata) metadata;
TiffField orientationField = jpegMetadata.findEXIFValue(TiffTagConstants.TIFF_TAG_ORIENTATION);
if (orientationField != null) {
int orientation = orientationField.getIntValue();
switch (orientation) {
case TiffTagConstants.ORIENTATION_VALUE_ROTATE_90_CW:
image = Scalr.rotate(image, Rotation.CW_90);
break;
case TiffTagConstants.ORIENTATION_VALUE_ROTATE_180:
image = Scalr.rotate(image, Rotation.CW_180);
break;
case TiffTagConstants.ORIENTATION_VALUE_ROTATE_270_CW:
image = Scalr.rotate(image, Rotation.CW_270);
break;
case TiffTagConstants.ORIENTATION_VALUE_MIRROR_HORIZONTAL:
image = Scalr.rotate(image, Rotation.FLIP_HORZ);
break;
case TiffTagConstants.ORIENTATION_VALUE_MIRROR_VERTICAL:
image = Scalr.rotate(image, Rotation.FLIP_VERT);
break;
case TiffTagConstants.ORIENTATION_VALUE_MIRROR_HORIZONTAL_AND_ROTATE_90_CW:
image = Scalr.rotate(Scalr.rotate(image, Rotation.FLIP_HORZ), Rotation.CW_90);
break;
case TiffTagConstants.ORIENTATION_VALUE_MIRROR_HORIZONTAL_AND_ROTATE_270_CW:
image = Scalr.rotate(Scalr.rotate(image, Rotation.FLIP_HORZ), Rotation.CW_270);
break;
case TiffTagConstants.ORIENTATION_VALUE_HORIZONTAL_NORMAL:
default:
// do nothing
break;
}
}
}
} catch (ImageReadException e) {
// failed to read metadata.
// nothing to do here, return image as is.
}
return image;
}
public void saveImageWithPreviews(String tempFilename, String outputFilename)
throws IOException {
String ext = FilenameUtils.getExtension(outputFilename);
Path outputImagePath = Paths.get(imgDir, "p", outputFilename);
Files.move(Paths.get(tmpDir, tempFilename), outputImagePath);
BufferedImage originalImage = readImageWithOrientation(outputImagePath.toFile());
int width = originalImage.getWidth();
int height = originalImage.getHeight();
int maxDimension = (width > height) ? width : height;
BufferedImage image1024 = (maxDimension > 1024) ? Scalr.resize(originalImage, 1024) : originalImage;
BufferedImage image0512 = (maxDimension > 512) ? Scalr.resize(originalImage, 512) : originalImage;
BufferedImage image0160 = (maxDimension > 160) ? Scalr.resize(originalImage, 160) : originalImage;
ImageIO.write(image1024, ext, Paths.get(imgDir, "photos-1024", outputFilename).toFile());
ImageIO.write(image0512, ext, Paths.get(imgDir, "photos-512", outputFilename).toFile());
ImageIO.write(image0160, ext, Paths.get(imgDir, "ps", outputFilename).toFile());
}
public void saveAvatar(String tempFilename, int uid)
throws IOException {
String ext = FilenameUtils.getExtension(tempFilename);
String originalName = String.format("%s.%s", uid, ext);
Path originalPath = Paths.get(imgDir, "ao", originalName);
Files.move(Paths.get(tmpDir, tempFilename), originalPath, StandardCopyOption.REPLACE_EXISTING);
BufferedImage originalImage = ImageIO.read(originalPath.toFile());
String targetExt = "png";
String targetName = String.format("%s.%s", uid, targetExt);
ImageIO.write(Scalr.resize(originalImage, 96), targetExt, Paths.get(imgDir, "a", targetName).toFile());
ImageIO.write(Scalr.resize(originalImage, 32), targetExt, Paths.get(imgDir, "as", targetName).toFile());
}
public Attachment getAttachment(File imgFile) throws IOException {
Attachment attachment = new Attachment();
int pos = imgFile.getName().lastIndexOf(".");
if (pos == -1)
throw new IOException("No extension for file: " + imgFile.getAbsolutePath());
String suffix = imgFile.getName().substring(pos + 1);
Iterator<ImageReader> iter = ImageIO.getImageReadersBySuffix(suffix);
while(iter.hasNext()) {
ImageReader reader = iter.next();
try (ImageInputStream stream = ImageIO.createImageInputStream(imgFile)) {
reader.setInput(stream);
attachment.setWidth(reader.getWidth(reader.getMinIndex()));
attachment.setHeight(reader.getHeight(reader.getMinIndex()));
return attachment;
} catch (Exception e) {
logger.debug("Error reading {}, trying next reader", imgFile.getAbsolutePath());
} finally {
reader.dispose();
}
}
throw new IOException("Not a known image file: " + imgFile.getAbsolutePath());
}
}
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