kinow commented on code in PR #283: URL: https://github.com/apache/commons-imaging/pull/283#discussion_r1897487998
########## src/main/java/org/apache/commons/imaging/formats/jpeg/exif/ExifOrientationRewriter.java: ########## @@ -0,0 +1,168 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.commons.imaging.formats.jpeg.exif; + +import java.io.ByteArrayOutputStream; +import java.io.File; +import java.io.FileOutputStream; +import java.io.IOException; +import java.nio.ByteOrder; +import java.util.ArrayList; + +import org.apache.commons.imaging.Imaging; +import org.apache.commons.imaging.ImagingException; +import org.apache.commons.imaging.bytesource.ByteSource; +import org.apache.commons.imaging.formats.jpeg.JpegImageMetadata; +import org.apache.commons.imaging.formats.tiff.TiffContents; +import org.apache.commons.imaging.formats.tiff.TiffHeader; +import org.apache.commons.imaging.formats.tiff.TiffImageMetadata; +import org.apache.commons.imaging.formats.tiff.constants.TiffTagConstants; +import org.apache.commons.imaging.formats.tiff.write.TiffOutputDirectory; +import org.apache.commons.imaging.formats.tiff.write.TiffOutputField; +import org.apache.commons.imaging.formats.tiff.write.TiffOutputSet; + +public class ExifOrientationRewriter { + + public enum Orientation { + HORIZONTAL((short)1), + MIRROR_HORIZONTAL((short)2), + ROTATE_180((short)3), + MIRROR_VERTICAL((short)4), + MIRROR_HORIZONTAL_AND_ROTATE_270((short)5), + ROTATE_90((short)6), + MIRROR_HORIZONTAL_AND_ROTATE_90((short)7), + ROTATE_270((short)8); + + private short val; + + Orientation(short orVal) { + this.val = orVal; + } + + public short getVal() { + return val; + } + } + + private ByteSource fileSrc; + + public ExifOrientationRewriter(File imageFile) { + fileSrc = ByteSource.file(imageFile); + } + public ExifOrientationRewriter(byte[] byteArray) { + fileSrc = ByteSource.array(byteArray); + } + public ExifOrientationRewriter(ByteSource byteSource) { + fileSrc = byteSource; + } + + /*** + * Get the orientation (enum) of the current image + * Returns horizontal by default + * @return Orientation enum + * @throws IOException + * @throws ImagingException + */ + public Orientation getExifOrientation() throws IOException { + + final JpegImageMetadata metadata = (JpegImageMetadata) Imaging.getMetadata(this.fileSrc.); + + if (metadata == null) { + return Orientation.HORIZONTAL; + } + + final TiffImageMetadata exifMetadata = metadata.getExif(); + + if (exifMetadata == null) { + return Orientation.HORIZONTAL; + } + + final TiffOutputSet outputSet = exifMetadata.getOutputSet(); + + TiffOutputDirectory tod = outputSet.getRootDirectory(); + if (tod == null) { + return Orientation.HORIZONTAL; + } + + TiffOutputField tof = tod.findField(TiffTagConstants.TIFF_TAG_ORIENTATION); + if (tof == null) { + return Orientation.HORIZONTAL; + } + + short imageOrientationVal = (short) exifMetadata.getFieldValue(TiffTagConstants.TIFF_TAG_ORIENTATION); + + for (Orientation orientation : Orientation.values()) { + if(orientation.getVal() == imageOrientationVal) { + return orientation; + } + } + + return Orientation.HORIZONTAL; + } + + /** + * A method that sets a new value to the orientation field in the EXIF metadata of a JPEG file. + * @param orientation the value as a enum of the direction to set as the new EXIF orientation + */ + public void setExifOrientation(Orientation orientation) throws IOException { + + JpegImageMetadata metadata = (JpegImageMetadata) Imaging.getMetadata(this.fileSrc.getAll()); Review Comment: `fileSrc` is a `ByteSource`, but getAll was removed: https://github.com/apache/commons-imaging/commit/f0b55d0a -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
