Initial import.

.classpath

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src/main/java"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>

.project

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>scilter</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

.settings/org.eclipse.jdt.ui.prefs

@@ -0,0 +1,6 @@
+#Mon Oct 02 16:29:52 CEST 2006
+eclipse.preferences.version=1
+formatter_profile=_Ailis
+formatter_settings_version=10
+internal.default.compliance=default
+org.eclipse.jdt.ui.text.custom_code_templates=<?xml version\="1.0" encoding\="UTF-8"?><templates><template autoinsert\="false" context\="gettercomment_context" deleted\="false" description\="Comment for getter method" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.gettercomment" name\="gettercomment">\n/**\n * Returns the ${bare_field_name}.\n *\n * @return The ${bare_field_name}\n */\n</template><template autoinsert\="false" context\="settercomment_context" deleted\="false" description\="Comment for setter method" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.settercomment" name\="settercomment">\n/**\n * Sets the ${bare_field_name}.\n *\n * @param ${param} \n *            The ${bare_field_name} to set\n */\n</template><template autoinsert\="false" context\="constructorcomment_context" deleted\="false" description\="Comment for created constructors" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.constructorcomment" name\="constructorcomment">/**\n * Constructor\n *\n * ${tags}\n */\n</template><template autoinsert\="false" context\="filecomment_context" deleted\="false" description\="Comment for created Java files" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.filecomment" name\="filecomment">/*\n * $$Id$$\n * Copyright (C) 2006 Klaus Reimer &lt;k@ailis.de&gt;\n * \n * This program is free software; you can redistribute it and/or modify it \n * under the terms of the GNU Lesser General Public License as published by the \n * Free Software Foundation; either version 2.1 of the License, or (at your \n * option) any later version.\n * \n * This program is distributed in the hope that it will be useful, but WITHOUT \n * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or \n * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License \n * for more details.\n * \n * You should have received a copy of the GNU Lesser General Public License \n * along with this program; if not, write to the Free Software Foundation, \n * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\n */\n</template><template autoinsert\="false" context\="typecomment_context" deleted\="false" description\="Comment for created types" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.typecomment" name\="typecomment">/**\n * ${type_name}\n *\n * @author Klaus Reimer (k@ailis.de)\n * @version $$Revision$$\n * ${tags}\n */\n</template><template autoinsert\="false" context\="fieldcomment_context" deleted\="false" description\="Comment for fields" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.fieldcomment" name\="fieldcomment">/** ${field} */</template><template autoinsert\="false" context\="methodcomment_context" deleted\="false" description\="Comment for non-overriding methods" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.methodcomment" name\="methodcomment">/**\n * TODO Document me\!\n *\n * ${tags}\n */\n</template><template autoinsert\="false" context\="overridecomment_context" deleted\="false" description\="Comment for overriding methods" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.overridecomment" name\="overridecomment">/**\n * ${see_to_overridden}\n */\n</template><template autoinsert\="true" context\="delegatecomment_context" deleted\="false" description\="Comment for delegate methods" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.delegatecomment" name\="delegatecomment">/**\n * ${tags}\n * ${see_to_target}\n */</template><template autoinsert\="false" context\="newtype_context" deleted\="false" description\="Newly created files" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.newtype" name\="newtype">${filecomment}\n${package_declaration}\n\n\n${typecomment}\n${type_declaration}</template><template autoinsert\="true" context\="classbody_context" deleted\="false" description\="Code in new class type bodies" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.classbody" name\="classbody">\n</template><template autoinsert\="true" context\="interfacebody_context" deleted\="false" description\="Code in new interface type bodies" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.interfacebody" name\="interfacebody">\n</template><template autoinsert\="true" context\="enumbody_context" deleted\="false" description\="Code in new enum type bodies" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.enumbody" name\="enumbody">\n</template><template autoinsert\="true" context\="annotationbody_context" deleted\="false" description\="Code in new annotation type bodies" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.annotationbody" name\="annotationbody">\n</template><template autoinsert\="false" context\="catchblock_context" deleted\="false" description\="Code in new catch blocks" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.catchblock" name\="catchblock">// Ignored</template><template autoinsert\="false" context\="methodbody_context" deleted\="false" description\="Code in created method stubs" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.methodbody" name\="methodbody">// Empty</template><template autoinsert\="false" context\="constructorbody_context" deleted\="false" description\="Code in created constructor stubs" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.constructorbody" name\="constructorbody">${body_statement}</template><template autoinsert\="false" context\="getterbody_context" deleted\="false" description\="Code in created getters" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.getterbody" name\="getterbody">return ${field};</template><template autoinsert\="true" context\="setterbody_context" deleted\="false" description\="Code in created setters" enabled\="true" id\="org.eclipse.jdt.ui.text.codetemplates.setterbody" name\="setterbody">${field} \= ${param};</template></templates>

src/main/java/de/ailis/scilter/AbstractScaleFilter.java

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+/*
+ * $Id$
+ * Copyright (C) 2006 Klaus Reimer <k@ailis.de>
+ * 
+ * This program is free software; you can redistribute it and/or modify it 
+ * under the terms of the GNU Lesser General Public License as published by the 
+ * Free Software Foundation; either version 2.1 of the License, or (at your 
+ * option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but WITHOUT 
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 
+ * for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License 
+ * along with this program; if not, write to the Free Software Foundation, 
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+package de.ailis.scilter;
+
+import java.awt.image.BufferedImage;
+
+
+/**
+ * A base class for the scale filters implementing some common functionality.
+ *
+ * @author Klaus Reimer (k@ailis.de)
+ * @version $Revision$
+ */
+
+public abstract class AbstractScaleFilter implements ScaleFilter
+{
+    /**
+     * @see ScaleFilter#scale(java.awt.image.BufferedImage)
+     */
+
+    public BufferedImage scale(BufferedImage image)
+    {
+        int[] pixels;
+        int width, height;
+        int scaleFactor;
+        int newWidth, newHeight;
+        BufferedImage out;
+
+        // Get the original width
+        width = image.getWidth();
+        height = image.getHeight();
+
+        // Scale the pixels
+        pixels = scale(image.getRGB(0, 0, width, height, null, 0, width), width, height);
+
+        // Determine new picture size
+        scaleFactor = getScaleFactor();
+        newWidth = width * scaleFactor;
+        newHeight = height * scaleFactor;
+
+        // Create and return the new picture
+        out = new BufferedImage(newWidth, newHeight, BufferedImage.TYPE_INT_RGB);
+        out.setRGB(0, 0, newWidth, newHeight, pixels, 0, newWidth);
+        return out;
+    }
+}

src/main/java/de/ailis/scilter/ScaleFilter.java

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+/*
+ * $Id$
+ * Copyright (C) 2006 Klaus Reimer <k@ailis.de>
+ * 
+ * This program is free software; you can redistribute it and/or modify it 
+ * under the terms of the GNU Lesser General Public License as published by the 
+ * Free Software Foundation; either version 2.1 of the License, or (at your 
+ * option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but WITHOUT 
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 
+ * for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License 
+ * along with this program; if not, write to the Free Software Foundation, 
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+package de.ailis.scilter;
+
+import java.awt.image.BufferedImage;
+
+
+/**
+ * The interface for all scale filters.
+ * 
+ * @author Klaus Reimer (k@ailis.de)
+ * @version $Revision$
+ */
+
+public interface ScaleFilter
+{
+    /**
+     * Returns the scale factor of the scale filter (For example 2, 3 or 4).
+     * 
+     * @return The scale factor.
+     */
+
+    public int getScaleFactor();
+
+
+    /**
+     * Scales the specified image and returns the new scaled image.
+     * 
+     * @param image
+     *            The original image to scale
+     * @return The scaled image
+     */
+
+    public BufferedImage scale(BufferedImage image);
+
+
+    /**
+     * Scales the specified pixel data (In RGB888 format, alpha values will be
+     * lost). Returns pixel array will also be in RGB888 format.
+     * 
+     * @param pixels
+     *            The pixel array
+     * @param width
+     *            The image width
+     * @param height The image height
+     * @return The scaled pixel data
+     */
+
+    public int[] scale(int[] pixels, int width, int height);
+}

src/main/java/de/ailis/scilter/ScaleFilterFactory.java

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+/*
+ * $Id$
+ * Copyright (C) 2006 Klaus Reimer <k@ailis.de>
+ * 
+ * This program is free software; you can redistribute it and/or modify it 
+ * under the terms of the GNU Lesser General Public License as published by the 
+ * Free Software Foundation; either version 2.1 of the License, or (at your 
+ * option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but WITHOUT 
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 
+ * for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License 
+ * along with this program; if not, write to the Free Software Foundation, 
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+package de.ailis.scilter;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import de.ailis.scilter.filter.Hq2xFilter;
+import de.ailis.scilter.filter.Hq3xFilter;
+import de.ailis.scilter.filter.Hq4xFilter;
+import de.ailis.scilter.filter.Nearest2xFilter;
+import de.ailis.scilter.filter.Nearest3xFilter;
+import de.ailis.scilter.filter.Nearest4xFilter;
+import de.ailis.scilter.filter.NormalFilter;
+import de.ailis.scilter.filter.Scale2xFilter;
+import de.ailis.scilter.filter.Scale3xFilter;
+
+
+/**
+ * The Scale Filter Factory can be queried about the implemented algorithms and
+ * can return an implementation of a desired algorithm.
+ * 
+ * @author Klaus Reimer (k@ailis.de)
+ * @version $Revision$
+ */
+
+public class ScaleFilterFactory
+{
+    /** The internal map with filter names and filter classes */
+    private static final Map<String, Class<? extends ScaleFilter>> filters = buildFilterMap();
+
+
+    /**
+     * Private constructor
+     */
+
+    private ScaleFilterFactory()
+    {
+        super();
+    }
+
+
+    /**
+     * Builds and returns the internal map with filter names and filter classes.
+     * 
+     * @return The internal filters map
+     */
+
+    private static final Map<String, Class<? extends ScaleFilter>> buildFilterMap()
+    {
+        Map<String, Class<? extends ScaleFilter>> filters;
+
+        filters = new HashMap<String, Class<? extends ScaleFilter>>(3);
+        filters.put("normal", NormalFilter.class);
+        filters.put("nearest2x", Nearest2xFilter.class);
+        filters.put("nearest3x", Nearest3xFilter.class);
+        filters.put("nearest4x", Nearest4xFilter.class);
+        filters.put("scale2x", Scale2xFilter.class);
+        filters.put("scale3x", Scale3xFilter.class);
+        filters.put("hq2x", Hq2xFilter.class);
+        filters.put("hq3x", Hq3xFilter.class);
+        filters.put("hq4x", Hq4xFilter.class);
+        return filters;
+    }
+
+
+    /**
+     * Returns an array with all the names of implemented scale filters. These
+     * names can be used with the createFilter method to get an instance of a
+     * scale filter implementation.
+     * 
+     * @return The array with implemented scale filter names
+     */
+
+    public static String[] getFilterNames()
+    {
+        return filters.keySet().toArray(new String[0]);
+    }
+
+
+    /**
+     * Returns an instance of the Scale Filter with the specified name.
+     * 
+     * @param filterName
+     *            The Scale Filter name
+     * @return The instance of the Scale Filter
+     */
+
+    public static ScaleFilter createFilter(String filterName)
+    {
+        Class<? extends ScaleFilter> c;
+
+        c = filters.get(filterName);
+        if (c == null)
+        {
+            throw new IllegalArgumentException(
+                "No implementation for scale filter with name " + filterName
+                    + " was found");
+        }
+        try
+        {
+            return c.newInstance();
+        }
+        catch (Exception e)
+        {
+            throw new RuntimeException(
+                "Unable to create instance of scale filter: " + e, e);
+        }
+    }
+}

src/main/java/de/ailis/scilter/Scilter.java

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+/*
+ * $Id$
+ * Copyright (C) 2006 Klaus Reimer <k@ailis.de>
+ * 
+ * This program is free software; you can redistribute it and/or modify it 
+ * under the terms of the GNU Lesser General Public License as published by the 
+ * Free Software Foundation; either version 2.1 of the License, or (at your 
+ * option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but WITHOUT 
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 
+ * for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License 
+ * along with this program; if not, write to the Free Software Foundation, 
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+package de.ailis.scilter;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+import de.ailis.scilter.util.FileUtils;
+
+
+/**
+ * A command line program to scale a picture with one of the scaling filters of
+ * Scilter.
+ * 
+ * @author Klaus Reimer (k@ailis.de)
+ * @version $Revision$
+ */
+
+public class Scilter
+{
+    /**
+     * Private constructor
+     */
+
+    private Scilter()
+    {
+        super();
+    }
+
+
+    /**
+     * First parameter is the scaling method, second parameter is the source
+     * file and the third parameter is the destination file.
+     * 
+     * @param args
+     *            The command line arguments
+     * @throws IOException
+     */
+
+    public static void main(String[] args) throws IOException
+    {
+        BufferedImage in, out;
+        File file;
+
+        if (args.length != 3)
+        {
+            System.out.println("Syntax: Scilter ALGORITHM INFILE OUTFILE");
+            System.out.println("Implemented algorithms:");
+            for (String name: ScaleFilterFactory.getFilterNames())
+            {
+                System.out.print("  ");
+                System.out.println(name);
+            }
+            System.exit(0);
+        }
+
+        in = ImageIO.read(new File(args[1]));
+        out = ScaleFilterFactory.createFilter(args[0]).scale(in);
+        file = new File(args[2]);
+        ImageIO.write(out, FileUtils.getFileExtension(file), new File(args[2]));
+    }
+}