Examples with MCRTiledPictureProps org.mycore.imagetiler.MCRTiledPictureProps used on opensource projects

Example 1 with MCRTiledPictureProps

use of org.mycore.imagetiler.MCRTiledPictureProps in project mycore by MyCoRe-Org.

the class MCRIVIEWIIIFImageImpl method getInformation.

public MCRIIIFImageInformation getInformation(String identifier) throws MCRIIIFImageNotFoundException, MCRIIIFImageProvidingException, MCRAccessException {
    try {
        Path tiledFile = tileFileProvider.getTiledFile(identifier);
        MCRTiledPictureProps tiledPictureProps = getTiledPictureProps(tiledFile);
        MCRIIIFImageInformation imageInformation = new MCRIIIFImageInformation(MCRIIIFBase.API_IMAGE_2, buildURL(identifier), DEFAULT_PROTOCOL, tiledPictureProps.getWidth(), tiledPictureProps.getHeight());
        MCRIIIFImageTileInformation tileInformation = new MCRIIIFImageTileInformation(256, 256);
        for (int i = 0; i < tiledPictureProps.getZoomlevel(); i++) {
            tileInformation.scaleFactors.add((int) Math.pow(2, i));
        }
        imageInformation.tiles.add(tileInformation);
        return imageInformation;
    } catch (FileSystemNotFoundException e) {
        LOGGER.error("Could not find Iview ZIP for {}", identifier, e);
        throw new MCRIIIFImageNotFoundException(identifier);
    }
}

Example 2 with MCRTiledPictureProps

use of org.mycore.imagetiler.MCRTiledPictureProps in project mycore by MyCoRe-Org.

the class MCRIView2Tools method getZoomLevel.

/**
 * combines image tiles of specified zoomLevel to one image.
 *
 * @param iviewFileRoot
 *            root directory of .iview2 file
 * @param imageProperties
 *            imageProperties, if available or null
 * @param zoomLevel
 *            the zoom level where 0 is thumbnail size
 * @return a combined image
 * @throws IOException
 *             any IOException while reading tiles
 * @throws JDOMException
 *             if image properties could not be parsed.
 */
public static BufferedImage getZoomLevel(final Path iviewFileRoot, final MCRTiledPictureProps imageProperties, final ImageReader reader, final int zoomLevel) throws IOException, JDOMException {
    if (zoomLevel == 0) {
        return readTile(iviewFileRoot, reader, 0, 0, 0);
    }
    MCRTiledPictureProps imageProps = imageProperties == null ? MCRTiledPictureProps.getInstanceFromDirectory(iviewFileRoot) : imageProperties;
    double zoomFactor = Math.pow(2, (imageProps.getZoomlevel() - zoomLevel));
    int maxX = (int) Math.ceil((imageProps.getWidth() / zoomFactor) / MCRImage.getTileSize());
    int maxY = (int) Math.ceil((imageProps.getHeight() / zoomFactor) / MCRImage.getTileSize());
    LOGGER.debug(MessageFormat.format("Image size:{0}x{1}, tiles:{2}x{3}", imageProps.getWidth(), imageProps.getHeight(), maxX, maxY));
    int imageType = getImageType(iviewFileRoot, reader, zoomLevel, 0, 0);
    int xDim = ((maxX - 1) * MCRImage.getTileSize() + readTile(iviewFileRoot, reader, zoomLevel, maxX - 1, 0).getWidth());
    int yDim = ((maxY - 1) * MCRImage.getTileSize() + readTile(iviewFileRoot, reader, zoomLevel, 0, maxY - 1).getHeight());
    BufferedImage resultImage = new BufferedImage(xDim, yDim, imageType);
    Graphics graphics = resultImage.getGraphics();
    try {
        for (int x = 0; x < maxX; x++) {
            for (int y = 0; y < maxY; y++) {
                BufferedImage tile = readTile(iviewFileRoot, reader, zoomLevel, x, y);
                graphics.drawImage(tile, x * MCRImage.getTileSize(), y * MCRImage.getTileSize(), null);
            }
        }
        return resultImage;
    } finally {
        graphics.dispose();
    }
}

Example 3 with MCRTiledPictureProps

use of org.mycore.imagetiler.MCRTiledPictureProps in project mycore by MyCoRe-Org.

the class MCRIView2Tools method getZoomLevel.

/**
 * combines image tiles of specified zoomLevel to one image.
 *
 * @param iviewFile
 *            .iview2 file
 * @param zoomLevel
 *            the zoom level where 0 is thumbnail size
 * @return a combined image
 * @throws IOException
 *             any IOException while reading tiles
 * @throws JDOMException
 *             if image properties could not be parsed.
 */
public static BufferedImage getZoomLevel(Path iviewFile, int zoomLevel) throws IOException, JDOMException {
    ImageReader reader = getTileImageReader();
    try (FileSystem zipFileSystem = getFileSystem(iviewFile)) {
        Path iviewFileRoot = zipFileSystem.getRootDirectories().iterator().next();
        MCRTiledPictureProps imageProps = MCRTiledPictureProps.getInstanceFromDirectory(iviewFileRoot);
        if (zoomLevel < 0 || zoomLevel > imageProps.getZoomlevel()) {
            throw new IndexOutOfBoundsException("Zoom level " + zoomLevel + " is not in range 0 - " + imageProps.getZoomlevel());
        }
        return getZoomLevel(iviewFileRoot, imageProps, reader, zoomLevel);
    } finally {
        reader.dispose();
    }
}

Example 4 with MCRTiledPictureProps

use of org.mycore.imagetiler.MCRTiledPictureProps in project mycore by MyCoRe-Org.

the class MCRIView2Commands method checkImage.

/**
 * checks and repairs tile of this derivate.
 * @param derivate derivate ID
 * @param absoluteImagePath absolute path to image file
 */
@MCRCommand(syntax = CHECK_TILES_OF_IMAGE_COMMAND_SYNTAX, help = "checks if tiles a specific file identified by its derivate {0} and absolute path {1} are valid or generates new one", order = 30)
public static void checkImage(String derivate, String absoluteImagePath) throws IOException {
    Path iviewFile = MCRImage.getTiledFile(MCRIView2Tools.getTileDir(), derivate, absoluteImagePath);
    // file checks
    if (!Files.exists(iviewFile)) {
        LOGGER.warn("IView2 file does not exist: {}", iviewFile);
        tileImage(derivate, absoluteImagePath);
        return;
    }
    MCRTiledPictureProps props;
    try {
        props = MCRTiledPictureProps.getInstanceFromFile(iviewFile);
    } catch (Exception e) {
        LOGGER.warn("Error while reading image metadata. Recreating tiles.", e);
        tileImage(derivate, absoluteImagePath);
        return;
    }
    if (props == null) {
        LOGGER.warn("Could not get tile metadata");
        tileImage(derivate, absoluteImagePath);
        return;
    }
    ZipFile iviewImage;
    try {
        iviewImage = new ZipFile(iviewFile.toFile());
        validateZipFile(iviewImage);
    } catch (Exception e) {
        LOGGER.warn("Error while reading Iview2 file: {}", iviewFile, e);
        tileImage(derivate, absoluteImagePath);
        return;
    }
    try (FileSystem fs = MCRIView2Tools.getFileSystem(iviewFile)) {
        Path iviewFileRoot = fs.getRootDirectories().iterator().next();
        // structure and metadata checks
        // one for metadata
        int tilesCount = iviewImage.size() - 1;
        if (props.getTilesCount() != tilesCount) {
            LOGGER.warn("Metadata tile count does not match stored tile count: {}", iviewFile);
            tileImage(derivate, absoluteImagePath);
            return;
        }
        int x = props.getWidth();
        int y = props.getHeight();
        if (MCRImage.getTileCount(x, y) != tilesCount) {
            LOGGER.warn("Calculated tile count does not match stored tile count: {}", iviewFile);
            tileImage(derivate, absoluteImagePath);
            return;
        }
        try {
            ImageReader imageReader = MCRIView2Tools.getTileImageReader();
            @SuppressWarnings("unused") BufferedImage thumbnail = MCRIView2Tools.getZoomLevel(iviewFileRoot, props, imageReader, 0);
            int maxX = (int) Math.ceil((double) props.getWidth() / MCRImage.getTileSize());
            int maxY = (int) Math.ceil((double) props.getHeight() / MCRImage.getTileSize());
            LOGGER.debug(MessageFormat.format("Image size:{0}x{1}, tiles:{2}x{3}", props.getWidth(), props.getHeight(), maxX, maxY));
            try {
                @SuppressWarnings("unused") BufferedImage sampleTile = MCRIView2Tools.readTile(iviewFileRoot, imageReader, props.getZoomlevel(), maxX - 1, 0);
            } finally {
                imageReader.dispose();
            }
        } catch (IOException | JDOMException e) {
            LOGGER.warn("Could not read thumbnail of {}", iviewFile, e);
            tileImage(derivate, absoluteImagePath);
        }
    }
}

Example 5 with MCRTiledPictureProps

use of org.mycore.imagetiler.MCRTiledPictureProps in project mycore by MyCoRe-Org.

the class MCRThumbnailServlet method getThumbnail.

private BufferedImage getThumbnail(Path iviewFile, boolean centered) throws IOException, JDOMException {
    BufferedImage level1Image;
    try (FileSystem fs = MCRIView2Tools.getFileSystem(iviewFile)) {
        Path iviewFileRoot = fs.getRootDirectories().iterator().next();
        MCRTiledPictureProps props = MCRTiledPictureProps.getInstanceFromDirectory(iviewFileRoot);
        // get next bigger zoomLevel and scale image to THUMBNAIL_SIZE
        ImageReader reader = MCRIView2Tools.getTileImageReader();
        try {
            level1Image = MCRIView2Tools.getZoomLevel(iviewFileRoot, props, reader, Math.min(1, props.getZoomlevel()));
        } finally {
            reader.dispose();
        }
    }
    final double width = level1Image.getWidth();
    final double height = level1Image.getHeight();
    final int newWidth = width < height ? (int) Math.ceil(thumbnailSize * width / height) : thumbnailSize;
    final int newHeight = width < height ? thumbnailSize : (int) Math.ceil(thumbnailSize * height / width);
    // if centered make transparent image
    int imageType = centered ? BufferedImage.TYPE_INT_ARGB : MCRImage.getImageType(level1Image);
    // if centered make thumbnailSize x thumbnailSize image
    final BufferedImage bicubic = new BufferedImage(centered ? thumbnailSize : newWidth, centered ? thumbnailSize : newHeight, imageType);
    final Graphics2D bg = bicubic.createGraphics();
    try {
        bg.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
        int x = centered ? (thumbnailSize - newWidth) / 2 : 0;
        int y = centered ? (thumbnailSize - newHeight) / 2 : 0;
        if (x != 0 && y != 0) {
            LOGGER.warn("Writing at position {},{}", x, y);
        }
        bg.drawImage(level1Image, x, y, x + newWidth, y + newHeight, 0, 0, (int) Math.ceil(width), (int) Math.ceil(height), null);
    } finally {
        bg.dispose();
    }
    return bicubic;
}