/*
- * Meviz - Various tools collection to work with multimedia.
- * Copyright (C) 2012, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public License
- * as published by the Free Software Foundation.
+ * Meviz - Various tools collection to work with multimedia. Author: Svjatoslav Agejenko.
+ * This project is released under Creative Commons Zero (CC0) license.
*/
+
package eu.svjatoslav.meviz.htmlindexer;
+import eu.svjatoslav.meviz.htmlindexer.layouts.Layout;
+import eu.svjatoslav.meviz.htmlindexer.layouts.MixedLayout;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+
+import javax.imageio.ImageReader;
+import javax.imageio.metadata.IIOMetadata;
+import javax.imageio.metadata.IIOMetadataNode;
+import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.File;
-import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
-import java.io.UnsupportedEncodingException;
-import java.net.URLEncoder;
+import java.util.ArrayList;
import java.util.HashSet;
import java.util.zip.CRC32;
-import javax.imageio.ImageIO;
-
-import eu.svjatoslav.meviz.htmlindexer.layouts.MixedLayout;
+import static org.openimaj.image.ImageUtilities.createBufferedImage;
+import static org.openimaj.image.ImageUtilities.readMBF;
public class Utils {
-
- private static File lastLoadedFile;
- private static final String UTF_8 = "UTF-8";
-
- private static BufferedImage lastLoadedBufferedImage;
-
- /**
- * Load image into {@link BufferedImage} and return it. Caches last loaded
- * image to speed up subsequent loading attempts.
- *
- * @throws ImageFormatError
- * @throws IOException
- */
- public static BufferedImage getBufferedImage(final File file)
- throws ImageFormatError, IOException {
- if (file.equals(lastLoadedFile))
- return lastLoadedBufferedImage;
-
- System.out.println("Loading image: " + file.getPath());
- lastLoadedBufferedImage = ImageIO.read(file);
- lastLoadedFile = file;
-
- if (lastLoadedBufferedImage == null) {
- System.out.println("Error reading image: " + file);
- throw new ImageFormatError("File: " + file
- + " is not a valid image.");
-
- }
-
- return lastLoadedBufferedImage;
- }
-
- public static File getLayoutIndexFile(final Layout layout,
- final File directoryToIndex) {
-
- final String indexFilePath = directoryToIndex.getAbsolutePath()
- + "/index" + layout.getFileNameSuffix() + ".html";
-
- return new File(indexFilePath);
- }
-
- public static HashSet<Layout> getLayouts() {
- final HashSet<Layout> layouts = new HashSet<Layout>();
- layouts.add(new MixedLayout());
- return layouts;
- }
-
- public static String getStringCrcAsHex(final String input) {
-
- // create a new CRC-calculating object
- final CRC32 crc = new CRC32();
-
- // loop, calculating CRC for each byte of the string
- // There is no CRC16.update(byte[]) method.
- for (final byte b : input.getBytes())
- crc.update(b);
-
- // note use crc.value, not crc.getValue()
- final String hex = Integer.toHexString((int) crc.getValue())
- .toUpperCase();
-
- // System.out.println("Input string: " + input);
- // System.out.println("Result: " + hex);
-
- return hex;
- }
-
- public static File getThumbnailsDirectory(final File directoryToIndex) {
- return new File(getThumbnailsDirectoryPath(directoryToIndex));
- }
-
- public static String getThumbnailsDirectoryPath(final File directoryToIndex) {
- return directoryToIndex.getAbsolutePath() + "/"
- + Constants.THUMBNAILS_DIRECTORY_NAME + "/";
- }
-
- public static boolean isMevizGeneratedIndexFile(final File indexFile)
- throws FileNotFoundException, IOException {
-
- boolean isMevizFile = false;
-
- final FileReader fileReader = new FileReader(indexFile);
- final BufferedReader reader = new BufferedReader(fileReader);
-
- parseFile: {
- while (true) {
- final String line = reader.readLine();
-
- if (line == null)
- break parseFile;
-
- if (line.contains(Constants.HTML_MAGIC_STRING)) {
- isMevizFile = true;
- break parseFile;
- }
- }
- }
-
- reader.close();
- fileReader.close();
- return isMevizFile;
- }
-
- public static String urlEncode(String string) {
- try {
- return URLEncoder.encode(string, UTF_8);
- } catch (UnsupportedEncodingException e) {
- throw new RuntimeException(e);
- }
- }
-
+ private static File lastLoadedFile;
+ private static BufferedImage lastLoadedBufferedImage;
+
+ /**
+ * Load image into {@link BufferedImage} and return it. Caches last loaded
+ * image to speed up subsequent loading attempts.
+ *
+ * @throws ImageFormatError
+ * @throws IOException
+ */
+ public static BufferedImage getBufferedImage(final File file)
+ throws ImageFormatError, IOException {
+ if (file.equals(lastLoadedFile))
+ return lastLoadedBufferedImage;
+
+ lastLoadedBufferedImage = createBufferedImage(readMBF(file));
+ lastLoadedFile = file;
+
+ if (lastLoadedBufferedImage == null) {
+ System.out.println("Error reading image: " + file);
+ throw new ImageFormatError("File: " + file
+ + " is not a valid image.");
+
+ }
+
+ return lastLoadedBufferedImage;
+ }
+
+ public static File getLayoutIndexFile(final Layout layout,
+ final File directoryToIndex) {
+
+ final String indexFilePath = directoryToIndex.getAbsolutePath()
+ + "/index" + layout.getFileNameSuffix() + ".html";
+
+ return new File(indexFilePath);
+ }
+
+ public static HashSet<Layout> getLayouts() {
+ final HashSet<Layout> layouts = new HashSet<>();
+ layouts.add(new MixedLayout());
+ return layouts;
+ }
+
+ public static String getStringCrcAsHex(final String input) {
+
+ // create a new CRC-calculating object
+ final CRC32 crc = new CRC32();
+
+ // loop, calculating CRC for each byte of the string
+ // There is no CRC16.update(byte[]) method.
+ for (final byte b : input.getBytes())
+ crc.update(b);
+
+ // note use crc.value, not crc.getValue()
+
+ return Integer.toHexString((int) crc.getValue())
+ .toUpperCase();
+ }
+
+ public static File getThumbnailsDirectory(final File directoryToIndex) {
+ return new File(getThumbnailsDirectoryPath(directoryToIndex));
+ }
+
+ public static String getThumbnailsDirectoryPath(final File directoryToIndex) {
+ return directoryToIndex.getAbsolutePath() + "/"
+ + Constants.THUMBNAILS_DIRECTORY_NAME + "/";
+ }
+
+ public static boolean isMevizGeneratedIndexFile(final File indexFile)
+ throws IOException {
+
+ boolean isMevizFile = false;
+
+ final FileReader fileReader = new FileReader(indexFile);
+ final BufferedReader reader = new BufferedReader(fileReader);
+
+ parseFile:
+ {
+ while (true) {
+ final String line = reader.readLine();
+
+ if (line == null)
+ break parseFile;
+
+ if (line.contains(Constants.HTML_MAGIC_STRING)) {
+ isMevizFile = true;
+ break parseFile;
+ }
+ }
+ }
+
+ reader.close();
+ fileReader.close();
+ return isMevizFile;
+ }
+
+ /**
+ * TODO: URL path component is encoded differently from URL query parameter.
+ * Also some URL encoding might work for HTML on local filesystem, while other
+ * stuff works for web. Things must be cleared up here. Currently they are mixed and
+ * hacked together.
+ */
+ public static String urlEncode(String string) {
+ if (string.startsWith("./"))
+ string = string.substring(2);
+
+ // TODO: get rid of UrlParamEncoder.
+ return UrlParamEncoder.encode(string);
+ //
+// try {
+// return URLEncoder.encode(string, UTF_8).replace("+", "%20");
+// } catch (UnsupportedEncodingException e) {
+// throw new RuntimeException(e);
+// }
+ }
+
+ public static ImageFrame[] readGIF(ImageReader reader) throws IOException {
+ ArrayList<ImageFrame> frames = new ArrayList<ImageFrame>(2);
+
+ int width = -1;
+ int height = -1;
+
+ IIOMetadata metadata = reader.getStreamMetadata();
+ if (metadata != null) {
+ IIOMetadataNode globalRoot = (IIOMetadataNode) metadata.getAsTree(metadata.getNativeMetadataFormatName());
+
+ NodeList globalScreenDescriptor = globalRoot.getElementsByTagName("LogicalScreenDescriptor");
+
+ if (globalScreenDescriptor != null && globalScreenDescriptor.getLength() > 0) {
+ IIOMetadataNode screenDescriptor = (IIOMetadataNode) globalScreenDescriptor.item(0);
+
+ if (screenDescriptor != null) {
+ width = Integer.parseInt(screenDescriptor.getAttribute("logicalScreenWidth"));
+ height = Integer.parseInt(screenDescriptor.getAttribute("logicalScreenHeight"));
+ }
+ }
+ }
+
+ BufferedImage master = null;
+ Graphics2D masterGraphics = null;
+
+ for (int frameIndex = 0;; frameIndex++) {
+ BufferedImage image;
+ try {
+ image = reader.read(frameIndex);
+ } catch (IndexOutOfBoundsException io) {
+ break;
+ }
+
+ if (width == -1 || height == -1) {
+ width = image.getWidth();
+ height = image.getHeight();
+ }
+
+ IIOMetadataNode root = (IIOMetadataNode) reader.getImageMetadata(frameIndex).getAsTree("javax_imageio_gif_image_1.0");
+ IIOMetadataNode gce = (IIOMetadataNode) root.getElementsByTagName("GraphicControlExtension").item(0);
+ int delay = Integer.valueOf(gce.getAttribute("delayTime"));
+ String disposal = gce.getAttribute("disposalMethod");
+
+ int x = 0;
+ int y = 0;
+
+ if (master == null) {
+ master = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+ masterGraphics = master.createGraphics();
+ masterGraphics.setBackground(new Color(0, 0, 0, 0));
+ } else {
+ NodeList children = root.getChildNodes();
+ for (int nodeIndex = 0; nodeIndex < children.getLength(); nodeIndex++) {
+ Node nodeItem = children.item(nodeIndex);
+ if (nodeItem.getNodeName().equals("ImageDescriptor")) {
+ NamedNodeMap map = nodeItem.getAttributes();
+ x = Integer.valueOf(map.getNamedItem("imageLeftPosition").getNodeValue());
+ y = Integer.valueOf(map.getNamedItem("imageTopPosition").getNodeValue());
+ }
+ }
+ }
+ masterGraphics.drawImage(image, x, y, null);
+
+ BufferedImage copy = new BufferedImage(master.getColorModel(), master.copyData(null), master.isAlphaPremultiplied(), null);
+ frames.add(new ImageFrame(copy, delay, disposal));
+
+ if (disposal.equals("restoreToPrevious")) {
+ BufferedImage from = null;
+ for (int i = frameIndex - 1; i >= 0; i--) {
+ if (!frames.get(i).getDisposal().equals("restoreToPrevious") || frameIndex == 0) {
+ from = frames.get(i).image;
+ break;
+ }
+ }
+
+ master = new BufferedImage(from.getColorModel(), from.copyData(null), from.isAlphaPremultiplied(), null);
+ masterGraphics = master.createGraphics();
+ masterGraphics.setBackground(new Color(0, 0, 0, 0));
+ } else if (disposal.equals("restoreToBackgroundColor")) {
+ masterGraphics.clearRect(x, y, image.getWidth(), image.getHeight());
+ }
+ }
+ reader.dispose();
+
+ return frames.toArray(new ImageFrame[frames.size()]);
+ }
+
+ public static class ImageFrame {
+ private final int delay;
+ public BufferedImage image;
+ private final String disposal;
+
+ public ImageFrame(BufferedImage image, int delay, String disposal) {
+ this.image = image;
+ this.delay = delay;
+ this.disposal = disposal;
+ }
+
+ public int getDelay() {
+ return delay;
+ }
+
+ public String getDisposal() {
+ return disposal;
+ }
+ }
}
projects / meviz.git / blobdiff