Java Code Examples for com.drew.imaging.ImageMetadataReader#readMetadata()

public MetadataProcessor(File imageFile) {
    this.imageFile = imageFile;
    try {
        data = ImageMetadataReader.readMetadata(imageFile);
    } catch (Exception ex) {
        Logger.getLogger(MetadataProcessor.class.getName()).log(Level.SEVERE, null, ex);
    }
    
    for (Directory directory : data.getDirectories()) {
        extracted_data += String.format("----------------------------------------------%15s---------------------------------\n", directory.getName());
        for (Tag tag : directory.getTags()) {
            extracted_data += tag + "\n";
        }
        if (directory.hasErrors()) {
            for (String error : directory.getErrors()) {
                System.err.println("ERROR: " + error);
            }
        }
    }
}
 

protected Map<String, String> getImgMetadata(File file, List<String> ignoreKeysList) {
    logger.debug("Get image Metadata in Resource Action");
    Map<String, String> meta = new HashMap<>();
    try {
        Metadata metadata = ImageMetadataReader.readMetadata(file);

        for (Directory directory : metadata.getDirectories()) {
            for (Tag tag : directory.getTags()) {
                if (!ignoreKeysList.contains(tag.getTagName())) {
                    logger.debug("Add Metadata with key: {}", tag.getTagName());
                    meta.put(tag.getTagName(), tag.getDescription());
                } else {
                    logger.debug("Skip Metadata key {}", tag.getTagName());
                }
            }
        }
    } catch (ImageProcessingException|IOException ex) {
        logger.error("Error reading image metadata for file {}", file.getName(), ex);
    }
    return meta;
}
 

public MediaDetailsMap<String, String> getAllDetails(Context context, Media media) {
    MediaDetailsMap<String, String> data = new MediaDetailsMap<String, String>();
    try {
        Metadata metadata = ImageMetadataReader.readMetadata(context.getContentResolver().openInputStream(media.getUri()));
        for (Directory directory : metadata.getDirectories()) {

            for (Tag tag : directory.getTags()) {
                data.put(tag.getTagName(), directory.getObject(tag.getTagType()) + "");
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return data;
}
 

public static ImageInfo getImageInfo(InputStream imageStream) throws ImageProcessingException, IOException {
    Metadata metadata = ImageMetadataReader.readMetadata(imageStream);
    ImageInfo.Builder builder = new ImageInfo.Builder();
    for (Directory directory: metadata.getDirectories()) {
        for (Tag tag: directory.getTags()) {
            if (ParsingUtils.IMAGE_HEIGHT.equals(tag.getTagName())) {
                builder.setPixelsY(ParsingUtils.getIntegerFromData(tag.getDescription()));
            } else if (ParsingUtils.IMAGE_WIDTH.equals(tag.getTagName())) {
                builder.setPixelsX(ParsingUtils.getIntegerFromData(tag.getDescription()));
            }
        }
    }
    return builder.build();
}
 

private Metadata originalImageMetaData() throws ImageProcessingException, IOException {
    if(this.originalImageMetaData == null) {//this is expensive, don't do it more than once
        originalImageMetaData = ImageMetadataReader.readMetadata(
                new BufferedInputStream(new ByteArrayInputStream(originalImageData)),
                originalImageData.length
        );
    }
    return originalImageMetaData;
}
 

/**
 *
 * @param filePath
 * @return
 */
private String getExifDate(File file) {

  try {
    Metadata metadata = ImageMetadataReader.readMetadata(file);
    Directory directory = metadata.getFirstDirectoryOfType(ExifSubIFDDirectory.class);
    int dateTag = ExifSubIFDDirectory.TAG_DATETIME_ORIGINAL;

    if (directory != null && directory.containsTag(dateTag)) {
      Date date = directory.getDate(dateTag, TimeZone.getDefault());
      return new SimpleDateFormat("yyyy-MM-dd HH:mm").format(date);
    } else {
      return "";
    }
  } catch (ImageProcessingException | IOException ex) {
    Session.LOGGER.log(Level.INFO, 
        "Exif error for {0}: {1}",
        new String[]{file.getName(), ex.getLocalizedMessage()}
    );
    return "";
  }
}
 

/** {@inheritDoc} */
@Override
protected void process(Record record, SingleLaneBatchMaker batchMaker) throws StageException {
  LOG.info("Input record: {}", record);

  FileRef fileRef = record.get("/fileRef").getValueAsFileRef();
  Metadata metadata;
  try {
    metadata = ImageMetadataReader.readMetadata(fileRef.createInputStream(getContext(), InputStream.class));
  } catch (ImageProcessingException | IOException e) {
    String filename = record.get("/fileInfo/filename").getValueAsString();
    LOG.info("Exception getting metadata from {}", filename, e);
    throw new OnRecordErrorException(record, Errors.SAMPLE_02, e);
  }

  for (Directory directory : metadata.getDirectories()) {
    LinkedHashMap<String, Field> listMap = new LinkedHashMap<>();

    for (Tag tag : directory.getTags()) {
      listMap.put(tag.getTagName(), Field.create(tag.getDescription()));
    }

    if (directory.hasErrors()) {
      for (String error : directory.getErrors()) {
        LOG.info("ERROR: {}", error);
      }
    }

    record.set("/" + directory.getName(), Field.createListMap(listMap));
  }

  LOG.info("Output record: {}", record);

  batchMaker.addRecord(record);
}
 

private static void processDirectory(@NotNull File path, @NotNull FileHandler handler, @NotNull String relativePath, PrintStream log)
{
    handler.onStartingDirectory(path);

    String[] pathItems = path.list();

    if (pathItems == null) {
        return;
    }

    // Order alphabetically so that output is stable across invocations
    Arrays.sort(pathItems);

    for (String pathItem : pathItems) {
        File file = new File(path, pathItem);

        if (file.isDirectory()) {
            processDirectory(file, handler, relativePath.length() == 0 ? pathItem : relativePath + "/" + pathItem, log);
        } else if (handler.shouldProcess(file)) {

            handler.onBeforeExtraction(file, log, relativePath);

            // Read metadata
            final Metadata metadata;
            try {
                metadata = ImageMetadataReader.readMetadata(file);
            } catch (Throwable t) {
                handler.onExtractionError(file, t, log);
                continue;
            }

            handler.onExtractionSuccess(file, metadata, relativePath, log);
        }
    }
}
 

private static void xmpSample(InputStream imageStream) throws XMPException, ImageProcessingException, IOException
{
    // Extract metadata from the image
    Metadata metadata = ImageMetadataReader.readMetadata(imageStream);

    // Iterate through any XMP directories we may have received
    for (XmpDirectory xmpDirectory : metadata.getDirectoriesOfType(XmpDirectory.class)) {

        // Usually with metadata-extractor, you iterate a directory's tags. However XMP has
        // a complex structure with many potentially unknown properties. This doesn't map
        // well to metadata-extractor's directory-and-tag model.
        //
        // If you need to use XMP data, access the XMPMeta object directly.
        XMPMeta xmpMeta = xmpDirectory.getXMPMeta();

        XMPIterator itr = xmpMeta.iterator();

        // Iterate XMP properties
        while (itr.hasNext()) {

            XMPPropertyInfo property = (XMPPropertyInfo) itr.next();

            // Print details of the property
            System.out.println(property.getPath() + ": " + property.getValue());
        }
    }
}
 

private static Metadata extractMetadata(File file) {
    Metadata metadata;
    try {
        metadata = ImageMetadataReader.readMetadata(file);
    } catch (ImageProcessingException | IOException e) {
        Messages.showException(e);
        return null;
    }
    return metadata;
}
 

protected Map getImgMetadata(File file) {
    logger.debug("Get image Metadata in Resource Action");
    Map<String, String> meta = new HashMap<>();
    ResourceInterface resourcePrototype = this.getResourceManager().createResourceType(this.getResourceType());
    try {
        Metadata metadata = ImageMetadataReader.readMetadata(file);
        String ignoreKeysConf = resourcePrototype.getMetadataIgnoreKeys();
        String[] ignoreKeys = null;
        if (null != ignoreKeysConf) {
            ignoreKeys = ignoreKeysConf.split(",");
            logger.debug("Metadata ignoreKeys: {}", ignoreKeys);
        } else {
            logger.debug("Metadata ignoreKeys not configured");
        }
        List<String> ignoreKeysList = new ArrayList<String>();
        if (null != ignoreKeys) {
            ignoreKeysList = Arrays.asList(ignoreKeys);
        }
        for (Directory directory : metadata.getDirectories()) {
            for (Tag tag : directory.getTags()) {
                if (!ignoreKeysList.contains(tag.getTagName())) {
                    logger.debug("Add Metadata with key: {}", tag.getTagName());
                    meta.put(tag.getTagName(), tag.getDescription());
                } else {
                    logger.debug("Skip Metadata key {}", tag.getTagName());
                }
            }
        }
    } catch (ImageProcessingException ex) {
        logger.error("Error reading metadata from file " + this.getFileName() + " - message " + ex.getMessage());
    } catch (IOException ioex) {
        logger.error("Error reading file", ioex);
    }
    return meta;
}
 

public static ImageMetadata fromImage(ImmutableImage image) throws IOException {
   try (ByteArrayInputStream stream = new ByteArrayInputStream(image.bytes(PngWriter.NoCompression))) {
      Metadata metadata = ImageMetadataReader.readMetadata(stream);
      return fromMetadata(metadata);
   } catch (ImageProcessingException e) {
      throw new IOException(e);
   }
}
 

private void loadInitOrientation(Path imagePath)
{
    try
    {
        InputStream s = imagePath.getFile().getInputStream();
        try
        {
            Metadata m = ImageMetadataReader.readMetadata(s);

            for(Directory directory: m.getDirectories())
                if(directory.containsTag(ExifSubIFDDirectory.TAG_ORIENTATION))
                {
                    int orientation = directory.getInt(ExifSubIFDDirectory.TAG_ORIENTATION);
                    switch (orientation)
                    {
                        case ExifInterface.ORIENTATION_FLIP_HORIZONTAL:
                            _flipX = true;
                            break;
                        case ExifInterface.ORIENTATION_ROTATE_180:
                            _rotation = 180;
                            break;
                        case ExifInterface.ORIENTATION_FLIP_VERTICAL:
                            _rotation = 180;
                            _flipX = true;
                            break;
                        case ExifInterface.ORIENTATION_TRANSPOSE:
                            _rotation = 90;
                            _flipX = true;
                            break;
                        case ExifInterface.ORIENTATION_ROTATE_90:
                            _rotation = 90;
                            break;
                        case ExifInterface.ORIENTATION_TRANSVERSE:
                            _rotation = -90;
                            _flipX = true;
                            break;
                        case ExifInterface.ORIENTATION_ROTATE_270:
                            _rotation = -90;
                            break;
                    }
                    break;
                }
        }
        finally
        {
            s.close();
        }
    }
    catch (Exception e)
    {
        if(GlobalConfig.isDebug())
            Logger.log(e);
    }
}
 

/**
 * Reads the {@link Metadata} from the given {@link Path} and returns the first {@link Directory}
 * of the specified type, if present.
 *
 * <p>Note that this is an utility method when one is interested in only one specific
 * {@code Directory}. Use {@code Metadata} and its factory methods
 * (e.g. {@link ImageMetadataReader#readMetadata} if multiple directories or more fine-graded
 * control is needed.
 *
 * @param path a path from which the directory may be read.
 * @param directoryType the {@code Directory} type
 * @param <T> the {@code Directory} type
 * @return an {@link Optional} containing the first {@code Directory} of type {@code T} of the
 *         metadata of the file, if present, otherwise an empty {@code Optional}.
 */
public static <T extends Directory> T getMetadataDirectoryOfType(Path path,
    Class<T> directoryType) {
  Metadata metadata = null;
  try {
    metadata = ImageMetadataReader.readMetadata(path.toFile());
  } catch (ImageProcessingException | IOException e) {
    logger.error("Error while reading exif data of file {}: {}",
        path, LogHelper.getStackTrace(e));
  }
  if(metadata==null){
    return null;
  }
  return metadata.getFirstDirectoryOfType( directoryType );
}