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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.FileUtils;
+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);
+ // this throws strange exceptions
+ // Files.move(Paths.get(tmpDir, tempFilename), outputImagePath);
+ FileUtils.moveFile(Paths.get(tmpDir, tempFilename).toFile(), outputImagePath.toFile());
+ 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();
+ try (ImageInputStream stream = ImageIO.createImageInputStream(imgFile)) {
+ Iterator<ImageReader> iter = ImageIO.getImageReaders(stream);
+ while (iter.hasNext()) {
+ ImageReader reader = iter.next();
+ try {
+ 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();
+ }
+ }
+ }
+
+ logger.warn("Not a known image file {}", imgFile.getAbsolutePath());
+ return attachment;
+ }
+} \ No newline at end of file