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author | Jakob Heher <jakob.heher@iaik.tugraz.at> | 2022-08-03 13:00:26 +0200 |
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committer | Jakob Heher <jakob.heher@iaik.tugraz.at> | 2022-08-03 13:00:26 +0200 |
commit | f9def921178f2c1995b28900e80e2a338257729b (patch) | |
tree | 46a9143f7454c6f11451175123c0600bb4d54ca8 /pdf-over-signator/src/main | |
parent | a25b8b2fa18e7789968dbeb802df2dfade577205 (diff) | |
download | pdf-over-f9def921178f2c1995b28900e80e2a338257729b.tar.gz pdf-over-f9def921178f2c1995b28900e80e2a338257729b.tar.bz2 pdf-over-f9def921178f2c1995b28900e80e2a338257729b.zip |
refactor out EXIF rotation nonsense into its self-contained class
Diffstat (limited to 'pdf-over-signator/src/main')
-rw-r--r-- | pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java | 102 |
1 files changed, 2 insertions, 100 deletions
diff --git a/pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java b/pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java index 0a130f79..939a27b2 100644 --- a/pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java +++ b/pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java @@ -15,6 +15,7 @@ */ package at.asit.pdfover.signator; +import at.asit.pdfover.Util; // Imports import java.awt.Graphics2D; import java.awt.image.BufferedImage; @@ -26,25 +27,14 @@ import java.io.InputStream; import java.io.OutputStream; import java.nio.file.Files; import java.nio.file.Paths; -import java.util.Iterator; import java.util.Properties; import javax.imageio.ImageIO; -import javax.imageio.ImageReader; -import javax.imageio.stream.ImageInputStream; import org.apache.commons.codec.digest.DigestUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; -import com.drew.imaging.ImageMetadataReader; -import com.drew.imaging.ImageProcessingException; -import com.drew.metadata.Metadata; -import com.drew.metadata.MetadataException; -import com.drew.metadata.exif.ExifDirectoryBase; -import com.drew.metadata.exif.ExifIFD0Directory; - -// TODO: what's the benefit of all of this caching business, especially since we seem to load it from disk anyway to hash it? /** * */ @@ -79,93 +69,6 @@ public class Emblem { return DigestUtils.md5Hex(is); } - /** - * Correctly rotate JPEG image by EXIF header - * @param img the image - * @param imgFile the image file - * @return the fixed image - */ - public static BufferedImage fixImage(BufferedImage img, File imgFile) { - int oheight = img.getHeight(); - int owidth = img.getWidth(); - - // Read EXIF metadata for jpeg - ImageInputStream iis = null; - try { - iis = ImageIO.createImageInputStream(imgFile); - Iterator<ImageReader> imageReaders = ImageIO.getImageReaders(iis); - - while (imageReaders.hasNext()) { - ImageReader reader = imageReaders.next(); - log.debug(reader.getFormatName()); - if (reader.getFormatName().equals("JPEG")) { - try { - Metadata metadata = ImageMetadataReader.readMetadata(imgFile); - ExifIFD0Directory metaDirectory = (metadata != null) ? metadata.getFirstDirectoryOfType(ExifIFD0Directory.class) : null; - if (metaDirectory != null) { - int orientation = metaDirectory.getInt( - ExifDirectoryBase.TAG_ORIENTATION); - if (orientation > 2) { - // rotate - double rotation = 0; - int height = owidth; - int width = oheight; - switch ((orientation + 1) / 2) { - case 2: - rotation = Math.PI; - height = oheight; - width = owidth; - break; - case 3: - rotation = Math.PI / 2; - break; - case 4: - rotation = 3 * Math.PI / 2; - break; - } - log.debug("EXIF orientation " + orientation + ", rotating " + rotation + "rad"); - BufferedImage result = new BufferedImage(width, height, img.getType()); - Graphics2D g = result.createGraphics(); - g.translate((width - owidth) / 2, (height - oheight) / 2); - g.rotate(rotation, owidth / 2, oheight / 2); - g.drawRenderedImage(img, null); - g.dispose(); - img = result; - owidth = width; - oheight = height; - } - if (((orientation < 5) && (orientation % 2 == 0)) || - (orientation > 5) && (orientation % 2 == 1)) { - // flip - log.debug("flipping image"); - BufferedImage result = new BufferedImage(owidth, oheight, img.getType()); - Graphics2D g = result.createGraphics(); - g.drawImage(img, owidth, 0, -owidth, oheight, null); - g.dispose(); - img = result; - } - } - } catch (ImageProcessingException e) { - log.error("Error reading emblem metadata", e); - } catch (MetadataException e) { - log.error("Error reading emblem metadata", e); - } catch (NullPointerException e) { - log.error("Error reading emblem metadata", e); - } - } - } - } catch (IOException e) { - log.error("Error reading image" , e); - } finally { - try { - if (iis != null) - iis.close(); - } catch (IOException e) { - log.debug("Error closing stream", e); - } - } - return img; - } private static BufferedImage scaleImage(BufferedImage img, int maxWidth, int maxHeight) { int oheight = img.getHeight(); @@ -231,9 +134,8 @@ public class Emblem { emblemProps.setProperty(this.hshProp, emblemHsh); File imgFile = new File(emblemImg); - BufferedImage img = ImageIO.read(imgFile); - img = fixImage(img, imgFile); img = scaleImage(img, this.maxWidth, this.maxHeight); + BufferedImage img = Util.readImageWithEXIFRotation(imgFile); File file = new File(this.fileDir, this.imgFileName + "." + this.imgFileExt); ImageIO.write(img, this.imgFileExt, file); // ignore returned boolean |