Examples with IIOMetadata javax.imageio.metadata.IIOMetadata used on opensource projects

Example 81 with IIOMetadata

use of javax.imageio.metadata.IIOMetadata in project ChatTweaks by blay09.

the class ImageLoader method loadImageInternal.

private static IChatRenderable loadImageInternal(Object obj, @Nullable File saveToFile) throws IOException {
    try (ImageInputStream in = ImageIO.createImageInputStream(obj)) {
        if (in == null) {
            throw new IOException("Failed to load image: input stream is null");
        }
        Iterator<ImageReader> it = ImageIO.getImageReaders(in);
        if (it.hasNext()) {
            ImageReader reader = it.next();
            reader.setInput(in);
            int numImages = reader.getNumImages(true);
            if (numImages > 1) {
                ImageWriter writer = null;
                ImageOutputStream out = null;
                if (saveToFile != null) {
                    out = ImageIO.createImageOutputStream(saveToFile);
                    writer = ImageIO.getImageWriter(reader);
                    writer.setOutput(out);
                }
                int[] frameTime = new int[numImages];
                int[] offsetX = new int[numImages];
                int[] offsetY = new int[numImages];
                BufferedImage[] images = new BufferedImage[numImages];
                for (int i = 0; i < images.length; i++) {
                    images[i] = reader.read(reader.getMinIndex() + i);
                    IIOMetadata metadata = reader.getImageMetadata(i);
                    String metaFormatName = metadata.getNativeMetadataFormatName();
                    if (metaFormatName == null) {
                        throw new IOException("Failed to load image: meta format name is null");
                    }
                    IIOMetadataNode root = (IIOMetadataNode) metadata.getAsTree(metaFormatName);
                    NodeList childNodes = root.getChildNodes();
                    for (int j = 0; j < childNodes.getLength(); j++) {
                        if (childNodes.item(j).getNodeName().equalsIgnoreCase("GraphicControlExtension")) {
                            frameTime[i] = Integer.parseInt(((IIOMetadataNode) childNodes.item(j)).getAttribute("delayTime")) * 10;
                        }
                        if (childNodes.item(j).getNodeName().equalsIgnoreCase("ImageDescriptor")) {
                            try {
                                offsetX[i] = Integer.parseInt(((IIOMetadataNode) childNodes.item(j)).getAttribute("imageLeftPosition"));
                            } catch (NumberFormatException ignored) {
                            }
                            try {
                                offsetY[i] = Integer.parseInt(((IIOMetadataNode) childNodes.item(j)).getAttribute("imageTopPosition"));
                            } catch (NumberFormatException ignored) {
                            }
                        }
                    }
                    if (writer != null) {
                        ImageReadParam imageReadParam = new ImageReadParam();
                        IIOImage ioImage = reader.readAll(i, imageReadParam);
                        ImageWriteParam imageWriteParam = new ImageWriteParam(Locale.ENGLISH);
                        writer.prepareWriteSequence(metadata);
                        writer.writeToSequence(ioImage, imageWriteParam);
                    }
                }
                if (out != null) {
                    out.close();
                }
                IIOMetadata metadata = reader.getImageMetadata(0);
                String metaFormatName = metadata.getNativeMetadataFormatName();
                IIOMetadataNode root = (IIOMetadataNode) metadata.getAsTree(metaFormatName);
                NodeList childNodes = root.getChildNodes();
                boolean cumulativeRendering = true;
                for (int i = 0; i < childNodes.getLength(); i++) {
                    if (childNodes.item(i).getNodeName().equalsIgnoreCase("GraphicControlExtension")) {
                        cumulativeRendering = ((IIOMetadataNode) childNodes.item(i)).getAttribute("disposalMethod").equals("doNotDispose");
                        break;
                    }
                }
                AnimatedChatRenderable image = new AnimatedChatRenderable(images, frameTime, offsetX, offsetY);
                image.setCumulativeRendering(cumulativeRendering);
                return image;
            } else {
                BufferedImage image = reader.read(0);
                if (saveToFile != null) {
                    try (ImageOutputStream out = ImageIO.createImageOutputStream(saveToFile)) {
                        ImageWriter writer = ImageIO.getImageWriter(reader);
                        writer.setOutput(out);
                        writer.write(image);
                    }
                }
                return new StaticChatRenderable(image);
            }
        }
    } catch (IllegalArgumentException e) {
        throw new IOException(e);
    }
    return NullRenderable.INSTANCE;
}