Examples with ImageReader javax.imageio.ImageReader used on opensource projects

Example 21 with ImageReader

use of javax.imageio.ImageReader in project jdk8u_jdk by JetBrains.

the class BooleanAttributes method test.

public static void test(String mimeType, boolean useStreamMeta, String metaXml, String... boolXpaths) throws Exception {
    BufferedImage img = new BufferedImage(16, 16, BufferedImage.TYPE_INT_RGB);
    ImageWriter iw = ImageIO.getImageWritersByMIMEType(mimeType).next();
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    ImageOutputStream ios = new MemoryCacheImageOutputStream(os);
    iw.setOutput(ios);
    ImageWriteParam param = null;
    IIOMetadata streamMeta = iw.getDefaultStreamMetadata(param);
    IIOMetadata imageMeta = iw.getDefaultImageMetadata(new ImageTypeSpecifier(img), param);
    IIOMetadata meta = useStreamMeta ? streamMeta : imageMeta;
    Source src = new StreamSource(new StringReader(metaXml));
    DOMResult dst = new DOMResult();
    transform(src, dst);
    Document doc = (Document) dst.getNode();
    Element node = doc.getDocumentElement();
    String metaFormat = node.getNodeName();
    // Verify that the default metadata gets formatted correctly.
    verify(meta.getAsTree(metaFormat), boolXpaths, false);
    meta.mergeTree(metaFormat, node);
    // Verify that the merged metadata gets formatte correctly.
    verify(meta.getAsTree(metaFormat), boolXpaths, true);
    iw.write(streamMeta, new IIOImage(img, null, imageMeta), param);
    iw.dispose();
    ios.close();
    ImageReader ir = ImageIO.getImageReader(iw);
    byte[] bytes = os.toByteArray();
    if (bytes.length == 0)
        throw new AssertionError("Zero length image file");
    ByteArrayInputStream is = new ByteArrayInputStream(bytes);
    ImageInputStream iis = new MemoryCacheImageInputStream(is);
    ir.setInput(iis);
    if (useStreamMeta)
        meta = ir.getStreamMetadata();
    else
        meta = ir.getImageMetadata(0);
    // Verify again after writing and re-reading the image
    verify(meta.getAsTree(metaFormat), boolXpaths, true);
}

Example 22 with ImageReader

use of javax.imageio.ImageReader in project jdk8u_jdk by JetBrains.

the class ImageReaderReadAll method main.

public static void main(String[] argv) {
    ImageReader ireader;
    ImageReadParam irp;
    IIOImage image;
    BufferedImage bi;
    BufferedImage bi_1;
    BufferedImage bi_2;
    ireader = new DummyImageReaderImpl(null);
    MemoryCacheImageInputStream mciis = new MemoryCacheImageInputStream(new ByteArrayInputStream(ba));
    ireader.setInput(mciis);
    irp = new ImageReadParam();
    irp.setDestination(new BufferedImage(10, 10, BufferedImage.TYPE_3BYTE_BGR));
    try {
        image = ireader.readAll(0, irp);
        bi_1 = ireader.read(0, irp);
        bi_2 = ireader.read(0);
    } catch (java.io.IOException ee) {
        throw new RuntimeException("Unexpected exception: " + ee);
    }
    bi = (BufferedImage) image.getRenderedImage();
    if (bi.getType() != bi_1.getType()) {
        throw new RuntimeException("Images have different type!");
    }
}

Example 23 with ImageReader

use of javax.imageio.ImageReader in project minecolonies by Minecolonies.

the class Image method getImageDimensions.

/**
     * Load and image from a {@link ResourceLocation} and return a {@link Tuple} containing its width and height.
     *
     * @param resourceLocation The {@link ResourceLocation} pointing to the image.
     * @return Width and height.
     */
public static Tuple<Integer, Integer> getImageDimensions(final ResourceLocation resourceLocation) {
    int width = 0;
    int height = 0;
    final Iterator<ImageReader> it = ImageIO.getImageReadersBySuffix("png");
    if (it.hasNext()) {
        final ImageReader reader = it.next();
        try (ImageInputStream stream = ImageIO.createImageInputStream(Minecraft.getMinecraft().getResourceManager().getResource(resourceLocation).getInputStream())) {
            reader.setInput(stream);
            width = reader.getWidth(reader.getMinIndex());
            height = reader.getHeight(reader.getMinIndex());
        } catch (final IOException e) {
            getLogger().warn(e);
        } finally {
            reader.dispose();
        }
    }
    return new Tuple<>(width, height);
}

Example 24 with ImageReader

use of javax.imageio.ImageReader in project Botnak by Gocnak.

the class FaceManager method sanityCheck.

/**
     * Tests to see if an image is within reasonable downloading bounds (5000x5000)
     *
     * @param url The URL to the image to check.
     * @return True if within downloadable bounds else false.
     */
private static boolean sanityCheck(URL url) {
    try (ImageInputStream in = ImageIO.createImageInputStream(url.openStream())) {
        final Iterator<ImageReader> readers = ImageIO.getImageReaders(in);
        if (readers.hasNext()) {
            ImageReader reader = readers.next();
            try {
                reader.setInput(in);
                Dimension d = new Dimension(reader.getWidth(0), reader.getHeight(0));
                return d.getHeight() < 5000 && d.getWidth() < 5000;
            } finally {
                reader.dispose();
            }
        }
    } catch (Exception e) {
        return false;
    }
    return false;
}

Example 25 with ImageReader

use of javax.imageio.ImageReader in project zm-mailbox by Zimbra.

the class NativeFormatter method getResizedImageData.

/**
     * If the image stored in the {@code MimePart} exceeds the given width,
     * shrinks the image and returns the shrunk data.  If the
     * image width is smaller than {@code maxWidth} or resizing is not supported,
     * returns {@code null}.
     */
private static byte[] getResizedImageData(MimePart mp, Integer maxWidth, Integer maxHeight) throws IOException, MessagingException {
    ImageReader reader = null;
    ImageWriter writer = null;
    InputStream in = null;
    if (maxWidth == null)
        maxWidth = LC.max_image_size_to_resize.intValue();
    if (maxHeight == null)
        maxHeight = LC.max_image_size_to_resize.intValue();
    try {
        // Get ImageReader for stream content.
        reader = ImageUtil.getImageReader(Mime.getContentType(mp), mp.getFileName());
        if (reader == null) {
            log.debug("No ImageReader available.");
            return null;
        }
        // Read message content.
        in = mp.getInputStream();
        reader.setInput(new MemoryCacheImageInputStream(in));
        BufferedImage img = reader.read(0);
        int width = img.getWidth(), height = img.getHeight();
        if (width <= maxWidth && height <= maxHeight) {
            log.debug("Image %dx%d is less than max %dx%d.  Not resizing.", width, height, maxWidth, maxHeight);
            return null;
        }
        // Resize.
        writer = ImageIO.getImageWriter(reader);
        if (writer == null) {
            log.debug("No ImageWriter available.");
            return null;
        }
        double ratio = Math.min((double) maxWidth / width, (double) maxHeight / height);
        width *= ratio;
        height *= ratio;
        BufferedImage small = ImageUtil.resize(img, width, height);
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        writer.setOutput(new MemoryCacheImageOutputStream(out));
        writer.write(small);
        return out.toByteArray();
    } finally {
        ByteUtil.closeStream(in);
        if (reader != null) {
            reader.dispose();
        }
        if (writer != null) {
            writer.dispose();
        }
    }
}