Java Code Examples for javax.imageio.metadata.IIOMetadataNode#item()

The following examples show how to use javax.imageio.metadata.IIOMetadataNode#item() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: GifSequenceWriter.java    From scrimage with Apache License 2.0 6 votes vote down vote up
/**
 * Returns an existing child node, or creates and returns a new child node (if
 * the requested node does not exist).
 *
 * @param rootNode the <tt>IIOMetadataNode</tt> to search for the child node.
 * @param nodeName the name of the child node.
 * @return the child node, if found or a new node created with the given name.
 */
private IIOMetadataNode getNode(IIOMetadataNode rootNode, String nodeName) {

    IIOMetadataNode[] nodes = new IIOMetadataNode[rootNode.getLength()];

    for (int i = 0; i < rootNode.getLength(); i++) {
        nodes[i] = (IIOMetadataNode) rootNode.item(i);
    }

    return Arrays.stream(nodes)
            .filter(n -> n.getNodeName().equalsIgnoreCase(nodeName))
            .findFirst().orElseGet(() -> {
                IIOMetadataNode node = new IIOMetadataNode(nodeName);
                rootNode.appendChild(node);
                return node;
            });
}
 
Example 2
Source File: GifSequenceWriter.java    From BlockMap with MIT License 5 votes vote down vote up
/**
 * Returns an existing child node, or creates and returns a new child node (if the requested node does not exist).
 * 
 * @param rootNode
 *            the <tt>IIOMetadataNode</tt> to search for the child node.
 * @param nodeName
 *            the name of the child node.
 * 
 * @return the child node, if found or a new node created with the given name.
 */
private static IIOMetadataNode getNode(
		IIOMetadataNode rootNode,
		String nodeName) {
	int nNodes = rootNode.getLength();
	for (int i = 0; i < nNodes; i++) {
		if (rootNode.item(i).getNodeName().compareToIgnoreCase(nodeName) == 0) {
			return ((IIOMetadataNode) rootNode.item(i));
		}
	}
	IIOMetadataNode node = new IIOMetadataNode(nodeName);
	rootNode.appendChild(node);
	return (node);
}
 
Example 3
Source File: GifSequenceWriter.java    From graphicsfuzz with Apache License 2.0 5 votes vote down vote up
/**
 * Returns an existing child node, or creates and returns a new child node (if
 * the requested node does not exist).
 *
 * @param rootNode the <tt>IIOMetadataNode</tt> to search for the child node.
 * @param nodeName the name of the child node.
 *
 * @return the child node, if found or a new node created with the given name.
 */
private static IIOMetadataNode getNode(
    IIOMetadataNode rootNode,
    String nodeName) {
  int numNodes = rootNode.getLength();
  for (int i = 0; i < numNodes; i++) {
    if (rootNode.item(i).getNodeName().compareToIgnoreCase(nodeName)
        == 0) {
      return ((IIOMetadataNode) rootNode.item(i));
    }
  }
  IIOMetadataNode node = new IIOMetadataNode(nodeName);
  rootNode.appendChild(node);
  return (node);
}
 
Example 4
Source File: GifSequenceWriter.java    From Digital with GNU General Public License v3.0 5 votes vote down vote up
/**
 * Returns an existing child node, or creates and returns a new child node (if
 * the requested node does not exist).
 *
 * @param rootNode the <tt>IIOMetadataNode</tt> to search for the child node.
 * @param nodeName the name of the child node.
 * @return the child node, if found or a new node created with the given name.
 */
private static IIOMetadataNode getNode(
        IIOMetadataNode rootNode,
        String nodeName) {
    int nNodes = rootNode.getLength();
    for (int i = 0; i < nNodes; i++) {
        if (rootNode.item(i).getNodeName().compareToIgnoreCase(nodeName)
                == 0) {
            return ((IIOMetadataNode) rootNode.item(i));
        }
    }
    IIOMetadataNode node = new IIOMetadataNode(nodeName);
    rootNode.appendChild(node);
    return (node);
}
 
Example 5
Source File: GifSequenceWriter.java    From open-ig with GNU Lesser General Public License v3.0 5 votes vote down vote up
/**
 * Returns an existing child node, or creates and returns a new child node
 * (if the requested node does not exist).
 * 
 * @param rootNode
 *            the <tt>IIOMetadataNode</tt> to search for the child node.
 * @param nodeName
 *            the name of the child node.
 * 
 * @return the child node, if found or a new node created with the given
 *         name.
 */
private static IIOMetadataNode getNode(IIOMetadataNode rootNode,
		String nodeName) {
	int nNodes = rootNode.getLength();
	for (int i = 0; i < nNodes; i++) {
		if (rootNode.item(i).getNodeName().compareToIgnoreCase(nodeName) == 0) {
			return ((IIOMetadataNode) rootNode.item(i));
		}
	}
	IIOMetadataNode node = new IIOMetadataNode(nodeName);
	rootNode.appendChild(node);
	return (node);
}
 
Example 6
Source File: GifSequenceWriter.java    From AsciidocFX with Apache License 2.0 5 votes vote down vote up
/**
 * Returns an existing child node, or creates and returns a new child node (if
 * the requested node does not exist).
 *
 * @param rootNode the <tt>IIOMetadataNode</tt> to search for the child node.
 * @param nodeName the name of the child node.
 * @return the child node, if found or a new node created with the given name.
 */
private IIOMetadataNode getNode(
        IIOMetadataNode rootNode,
        String nodeName) {
    int nNodes = rootNode.getLength();
    for (int i = 0; i < nNodes; i++) {
        if (rootNode.item(i).getNodeName().compareToIgnoreCase(nodeName)
                == 0) {
            return ((IIOMetadataNode) rootNode.item(i));
        }
    }
    IIOMetadataNode node = new IIOMetadataNode(nodeName);
    rootNode.appendChild(node);
    return (node);
}
 
Example 7
Source File: AnimatedGifUtil.java    From ChatGameFontificator with The Unlicense 4 votes vote down vote up
/**
 * Fix (ditto) for Java's animated GIF interpretation
 * 
 * Adapted from http://stackoverflow.com/questions/26801433/fix-frame-rate-of-animated-gif-in-java#answer-26829534
 * 
 * @param url
 *            The URL for the animated GIF to be loaded
 * @param dim
 *            The dimension object to be filled by the width and height of the loaded animated GIF
 * @return The loaded animated GIF
 * @throws Exception
 */
public static Image loadDittoAnimatedGif(final URL url, Dimension dim)
{
    final Image dimImage = new ImageIcon(url).getImage();

    Image image = null;
    try
    {
        ImageReader gifReader = ImageIO.getImageReadersByFormatName(GIF_EXTENSION).next();
        InputStream imageStream = url.openStream();
        gifReader.setInput(ImageIO.createImageInputStream(imageStream));
        IIOMetadata imageMetaData = gifReader.getImageMetadata(0);
        String metaFormatName = imageMetaData.getNativeMetadataFormatName();
        final int frameCount = gifReader.getNumImages(true);

        ByteArrayOutputStream baoStream = new ByteArrayOutputStream();
        ImageOutputStream ios = ImageIO.createImageOutputStream(baoStream);
        ImageWriter writer = ImageIO.getImageWriter(gifReader);
        writer.setOutput(ios);
        writer.prepareWriteSequence(null);

        final int imgWidth = dimImage.getWidth(null);
        final int imgHeight = dimImage.getHeight(null);
        dim.setSize(imgWidth, imgHeight);

        for (int i = 0; i < frameCount; i++)
        {
            // This read method takes into account the frame's top and left coordinates
            BufferedImage frame = gifReader.read(i);
            IIOMetadataNode nodes = (IIOMetadataNode) gifReader.getImageMetadata(i).getAsTree(metaFormatName);

            for (int j = 0; j < nodes.getLength(); j++)
            {
                IIOMetadataNode node = (IIOMetadataNode) nodes.item(j);
                if (GRAPHIC_CTRL_EXT.equalsIgnoreCase(node.getNodeName()))
                {
                    int delay = Integer.parseInt(node.getAttribute(ATTRIBUTE_DELAY_TIME));
                    // Minimum delay for browsers, which delay animated GIFs much more than would be to spec
                    if (delay < MIN_ANI_GIF_DELAY)
                    {
                        node.setAttribute(ATTRIBUTE_DELAY_TIME, Integer.toString(MIN_ANI_GIF_DELAY));
                    }
                    // Java's interpretation of restore to previous doesn't seem to work correctly, 
                    // at least not for BTTV's (ditto)
                    if (node.getAttribute(ATTRIBUTE_DISPOSAL_METHOD).equals(DISPOSE_RESTORE_TO_PREVIOUS))
                    {
                        node.setAttribute(ATTRIBUTE_DISPOSAL_METHOD, DISPOSE_RESTORE_TO_BGCOLOR);
                    }
                }
            }

            IIOMetadata metadata = writer.getDefaultImageMetadata(new ImageTypeSpecifier(frame), null);
            metadata.setFromTree(metadata.getNativeMetadataFormatName(), nodes);

            // This modified frame is necessary to get the correct image placement, width, and height in the final GIF
            BufferedImage frameMod = new BufferedImage(imgWidth, imgHeight, BufferedImage.TYPE_INT_ARGB);
            Graphics big = frameMod.getGraphics();
            big.drawImage(frame, 0, 0, null);

            IIOImage fixedFrame = new IIOImage(frameMod, null, metadata);
            writer.writeToSequence(fixedFrame, writer.getDefaultWriteParam());
        }
        writer.endWriteSequence();

        if (ios != null)
        {
            ios.close();
        }

        image = Toolkit.getDefaultToolkit().createImage(baoStream.toByteArray());
    }
    catch (Exception e)
    {
        // If anything goes wrong, just load it normally
        logger.error("Error loading animated GIF (ditto) from " + url, e);
        image = new ImageIcon(url).getImage();
        dim.setSize(image.getWidth(null), image.getHeight(null));
    }

    return image;
}