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/**
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* Copyright (C) 2021 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.api.service.media;
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import java.io.IOException;
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import java.io.InputStream;
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import org.apache.commons.imaging.ImageInfo;
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import org.apache.commons.imaging.ImageReadException;
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import org.apache.commons.imaging.Imaging;
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import org.apache.commons.imaging.common.GenericImageMetadata.GenericImageMetadataItem;
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import org.apache.commons.imaging.common.ImageMetadata;
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import org.apache.commons.imaging.common.ImageMetadata.ImageMetadataItem;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.http.HttpException;
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import org.apache.http.client.ClientProtocolException;
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import org.apache.log4j.Logger;
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import eu.etaxonomy.cdm.common.CdmUtils;
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import eu.etaxonomy.cdm.common.UriUtils;
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/**
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* TODO make use of timeOut ?
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*
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* Most code was extracted from CdmImageInfo.
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*
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*/
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public class MediaInfoFileReader extends AbstactMediaMetadataReader {
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private static Logger logger = Logger.getLogger(MediaInfoFileReader.class);
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public static final Integer IMAGE_READ_TIMEOUT = 3000; // ms
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private Integer timeOut = IMAGE_READ_TIMEOUT; // setting default
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/**
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* The <code>MediaMetadataFileReader</code> should not be used directly this method
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* only exists for not to break legacy code.
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* <p>
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* Instead the {@link IMediaInfoFactory} should always be used for to allow
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* all application parts to benefit from the potential speed up through the
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* MediaMetadataService or other fast source of metadata.
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*/
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@Deprecated
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public static MediaInfoFileReader legacyFactoryMethod(eu.etaxonomy.cdm.common.URI uri) {
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return new MediaInfoFileReader(uri);
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}
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protected MediaInfoFileReader(eu.etaxonomy.cdm.common.URI uri) {
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super(uri, uri);
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}
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@Override
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public MediaInfoFileReader read() throws IOException, HttpException {
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return readBaseInfo().readMetaData();
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}
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/**
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* Combines the calls to:
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*
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* <ul>
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* <li>{@link #readImageInfo()}</li>
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* <li>{@link #readImageLength()}</li>
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* <li>{@link #readSuffix()}</li>
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* </ul>
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* to read the commonly needed base information.
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*
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* @return
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* @throws IOException
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* @throws HttpException
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*/
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public MediaInfoFileReader readBaseInfo() throws IOException, HttpException{
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readImageInfo();
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readImageLength();
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readSuffix();
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return this;
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}
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/**
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* Reads the image info (width, height, bitPerPixel, metadata, format, mime type)
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*/
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public MediaInfoFileReader readImageInfo() throws IOException, HttpException{
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InputStream inputStream;
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try {
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inputStream = UriUtils.getInputStream(cdmImageInfo.getUri());
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ImageInfo imageInfo = Imaging.getImageInfo(inputStream, null);
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cdmImageInfo.setFormatName(imageInfo.getFormatName());
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cdmImageInfo.setMimeType(imageInfo.getMimeType());
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cdmImageInfo.setWidth(imageInfo.getWidth());
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cdmImageInfo.setHeight(imageInfo.getHeight());
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cdmImageInfo.setBitPerPixel(imageInfo.getBitsPerPixel());
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inputStream.close();
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} catch (ImageReadException e) {
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logger.error("Could not read: " + cdmImageInfo.getUri() + ". " + e.getMessage());
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throw new IOException(e);
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}
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return this;
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}
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public MediaInfoFileReader readMetaData() throws IOException, HttpException {
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ImageMetadata mediaData = null;
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try {
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InputStream inputStream = UriUtils.getInputStream(cdmImageInfo.getUri());
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mediaData = Imaging.getMetadata(inputStream, null);
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}catch (ImageReadException e) {
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logger.error("Could not read: " + cdmImageInfo.getUri() + ". " + e.getMessage());
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//throw new IOException(e);
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}
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if(mediaData != null) {
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for (ImageMetadataItem imItem : mediaData.getItems()){
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if (imItem instanceof GenericImageMetadataItem){
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GenericImageMetadataItem item = (GenericImageMetadataItem)imItem;
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if ("Keywords".equals(item.getKeyword())){
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String value = text(item);
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String[] splits = value.split(":");
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if (splits.length == 2){
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//convention used e.g. for Flora of cyprus (#9137)
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cdmImageInfo.getMetaData().put(splits[0].trim(), splits[1].trim());
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}else{
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cdmImageInfo.getMetaData().put(
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item.getKeyword(),
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CdmUtils.concat("; ", cdmImageInfo.getMetaData().get(item.getKeyword()), value)
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);
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}
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}else if (item.getKeyword().contains("/")){
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//TODO: not sure where this syntax is used originally
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String key = item.getKeyword();
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//key.replace("/", "");
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int index = key.indexOf("/");
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key = key.substring(0, index);
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cdmImageInfo.getMetaData().put(key, text(item));
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}else{
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cdmImageInfo.getMetaData().put(item.getKeyword(), text(item));
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}
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}
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}
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}
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return this;
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}
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/**
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* Reads the size of the image defined by the {@link #imageUri} in bytes
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*/
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public MediaInfoFileReader readImageLength() throws ClientProtocolException, IOException, HttpException{
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try {
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long length = UriUtils.getResourceLength(cdmImageInfo.getUri(), null);
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cdmImageInfo.setLength(length);
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} catch (HttpException e) {
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if (e.getMessage().equals("Could not retrieve Content-Length")){
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InputStream inputStream = UriUtils.getInputStream(cdmImageInfo.getUri());
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int n = 0;
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while(inputStream.read() != -1){
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n++;
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}
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inputStream.close();
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logger.info("Content-Length not available in http header. Image size computed via input stream size: " + cdmImageInfo.getUri());
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cdmImageInfo.setLength(n);
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}else{
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throw e;
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}
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}
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return this;
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}
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public MediaInfoFileReader readSuffix(){
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String path = cdmImageInfo.getUri().getPath();
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String suffix = path.substring(StringUtils.lastIndexOf(path, '.') + 1);
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cdmImageInfo.setSuffix(suffix);
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return this;
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}
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}
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