1 files changed, 556 insertions, 0 deletions
diff --git a/libjava/classpath/javax/imageio/ImageReader.java b/libjava/classpath/javax/imageio/ImageReader.java
new file mode 100644
index 00000000000..fdf692bd2aa
--- /dev/null
+++ b/libjava/classpath/javax/imageio/ImageReader.java
@@ -0,0 +1,556 @@
+/* ImageReader.java -- Decodes raster images.
+   Copyright (C) 2004  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.imageio;
+
+import java.awt.image.BufferedImage;
+import java.awt.image.Raster;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Locale;
+
+import javax.imageio.event.IIOReadProgressListener;
+import javax.imageio.event.IIOReadUpdateListener;
+import javax.imageio.event.IIOReadWarningListener;
+import javax.imageio.metadata.IIOMetadata;
+import javax.imageio.spi.ImageReaderSpi;
+import javax.imageio.stream.ImageInputStream;
+
+public abstract class ImageReader
+{
+  private boolean aborted;
+  
+  protected Locale[] availableLocales;
+  protected boolean ignoreMetadata;
+  protected Object input;
+  protected Locale locale;
+  protected int minIndex;
+  protected ImageReaderSpi originatingProvider;
+  protected List progressListeners = new ArrayList();
+  protected boolean seekForwardOnly;
+  protected List updateListeners = new ArrayList();
+  protected List warningListeners = new ArrayList();
+  protected List warningLocales = new ArrayList();
+
+  protected ImageReader(ImageReaderSpi originatingProvider)
+  {
+    this.originatingProvider = originatingProvider;
+  }
+
+  public void abort()
+  {
+    aborted = true;
+  }
+
+  protected boolean abortRequested()
+  {
+    return aborted;
+  }
+
+  public void addIIOReadProgressListener(IIOReadProgressListener listener)
+  {
+    if (listener == null)
+      return;
+    
+    progressListeners.add(listener);    
+  }
+
+  public void addIIOReadUpdateListener(IIOReadUpdateListener listener)
+  {
+    if (listener == null)
+      return;
+    
+    updateListeners.add(listener);    
+  }
+  
+  public void addIIOReadWarningListener(IIOReadWarningListener listener)
+  {
+    if (listener == null)
+      return;
+    
+    warningListeners.add(listener);    
+  }
+
+  public boolean canReadRaster()
+  {
+    return false;
+  }
+
+  protected void clearAbortRequest()
+  {
+    aborted = false;
+  }
+  
+  public void dispose()
+  {
+    // The default implementation does nothing.
+  }
+  
+  public float getAspectRatio(int imageIndex)
+    throws IOException
+  {
+    return (float) (getWidth(imageIndex) / getHeight(imageIndex));
+  }
+
+  public Locale[] getAvailableLocales()
+  {
+    if (availableLocales == null)
+      return null;
+    
+    return (Locale[]) availableLocales.clone();
+  }
+
+  public ImageReadParam getDefaultReadParam()
+  {
+    return new ImageReadParam();
+  }
+
+  public String getFormatName()
+    throws IOException
+  {
+    return originatingProvider.getFormatNames()[0];
+  }
+
+  public abstract int getHeight(int imageIndex)
+    throws IOException;
+
+  public abstract IIOMetadata getImageMetadata(int imageIndex)
+    throws IOException;
+
+  public abstract Iterator getImageTypes(int imageIndex)
+    throws IOException;
+
+  public void setInput(Object input,
+                       boolean seekForwardOnly,
+                       boolean ignoreMetadata)
+  {
+    Class[] okClasses = originatingProvider.getInputTypes();
+    if (okClasses == null)
+      {
+        if (!(input instanceof ImageInputStream))
+          throw new IllegalArgumentException();
+      }
+    else
+      {
+        boolean classOk = false;
+        for (int i = 0; i < okClasses.length; ++i)
+          if (okClasses[i].isInstance(input))
+            classOk = true;
+        if (!classOk)
+          throw new IllegalArgumentException();
+      }
+
+    this.input = input;
+    this.seekForwardOnly = seekForwardOnly;
+    this.ignoreMetadata = ignoreMetadata;
+    this.minIndex = 0;
+  }
+
+  public void setInput(Object in, boolean seekForwardOnly)
+  {
+    setInput(in, seekForwardOnly, false);
+  }
+
+  public void setInput(Object in)
+  {
+    setInput(in, false, false);
+  }
+
+  public Object getInput()
+  {
+    return input;
+  }
+
+  public Locale getLocale()
+  {
+    return locale;
+  }
+
+  public abstract int getNumImages(boolean allowSearch)
+    throws IOException;
+
+  public int getNumThumbnails(int imageIndex)
+    throws IOException
+  {
+    return 0;
+  }
+
+  public ImageReaderSpi getOriginatingProvider()
+  {
+    return originatingProvider;
+  }
+
+  public abstract IIOMetadata getStreamMetadata()
+    throws IOException;
+
+  public int getThumbnailHeight(int imageIndex, int thumbnailIndex)
+    throws IOException
+  {
+    return readThumbnail(imageIndex, thumbnailIndex).getHeight();
+  }
+
+  public int getThumbnailWidth(int imageIndex, int thumbnailIndex)
+    throws IOException
+  {
+    return readThumbnail(imageIndex, thumbnailIndex).getWidth();
+  }
+
+  public int getTileGridXOffset(int imageIndex)
+    throws IOException
+  {
+    return 0;
+  }
+
+  public int getTileGridYOffset(int imageIndex)
+    throws IOException
+  {
+    return 0;
+  }
+
+  public int getTileHeight(int imageIndex)
+    throws IOException
+  {
+    return getHeight(imageIndex);
+  }
+
+  public int getTileWidth(int imageIndex)
+    throws IOException
+  {
+    return getWidth(imageIndex);
+  }
+
+  public abstract int getWidth(int imageIndex)
+    throws IOException;
+
+  public boolean hasThumbnails(int imageIndex)
+    throws IOException
+  {
+    return getNumThumbnails(imageIndex) > 0;
+  }
+
+  public boolean isIgnoringMetadata()
+  {
+    return ignoreMetadata;
+  }
+
+  public boolean isImageTiled(int imageIndex)
+    throws IOException
+  {
+    return false;
+  }
+
+  public boolean isRandomAccessEasy(int imageIndex)
+    throws IOException
+  {
+    return false;
+  }
+
+  public boolean isSeekForwardOnly()
+  {
+    return seekForwardOnly;
+  }
+
+  protected void processImageComplete()
+  {
+    Iterator it = progressListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadProgressListener listener = (IIOReadProgressListener) it.next();
+	listener.imageComplete (this);
+      }
+  }
+
+  protected void processImageProgress(float percentageDone)
+  {
+    Iterator it = progressListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadProgressListener listener = (IIOReadProgressListener) it.next();
+	listener.imageProgress(this, percentageDone);
+      }
+  }
+
+  protected void processImageStarted(int imageIndex)
+  {
+    Iterator it = progressListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadProgressListener listener = (IIOReadProgressListener) it.next();
+	listener.imageStarted(this, imageIndex);
+      }
+  }
+
+  protected void processImageUpdate(BufferedImage image, int minX, int minY,
+				    int width, int height, int periodX,
+				    int periodY, int[] bands)
+  {
+    Iterator it = updateListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next();
+	listener.imageUpdate(this, image, minX, minY, width, height, periodX,
+			     periodY, bands);
+      }
+  }
+
+  protected void processPassComplete(BufferedImage image)
+  {
+    Iterator it = updateListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next();
+	listener.passComplete(this, image);
+      }
+  }
+
+  protected void processPassStarted(BufferedImage image, int pass, int minPass,
+				    int maxPass, int minX, int minY,
+				    int periodX, int periodY, int[] bands)
+  {
+    Iterator it = updateListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next();
+	listener.passStarted(this, image, pass, minPass, maxPass, minX, minY,
+			     periodX, periodY, bands);
+      }
+  }
+
+  protected void processReadAborted()
+  {
+    Iterator it = progressListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadProgressListener listener = (IIOReadProgressListener) it.next();
+	listener.readAborted(this);
+      }
+  }
+
+  protected void processSequenceComplete()
+  {
+    Iterator it = progressListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadProgressListener listener = (IIOReadProgressListener) it.next();
+	listener.sequenceComplete(this);
+      }
+  }
+
+  protected void processSequenceStarted(int minIndex)
+  {
+    Iterator it = progressListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadProgressListener listener = (IIOReadProgressListener) it.next();
+	listener.sequenceStarted(this, minIndex);
+      }
+  }
+
+  protected void processThumbnailComplete()
+  {
+    Iterator it = progressListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadProgressListener listener = (IIOReadProgressListener) it.next();
+	listener.thumbnailComplete(this);
+      }
+  }
+
+  protected void processThumbnailPassComplete(BufferedImage thumbnail)
+  {
+    Iterator it = updateListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next();
+	listener.thumbnailPassComplete(this, thumbnail);
+      }
+  }
+
+  protected void processThumbnailPassStarted(BufferedImage thumbnail, int pass,
+					     int minPass, int maxPass, int minX,
+					     int minY, int periodX, int periodY,
+					     int[] bands)
+  {
+    Iterator it = updateListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next();
+	listener.thumbnailPassStarted(this, thumbnail, pass, minPass, maxPass,
+				      minX, minY, periodX, periodY, bands);
+      }
+  }
+  
+  protected void processThumbnailProgress(float percentageDone)
+  {
+    Iterator it = progressListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadProgressListener listener = (IIOReadProgressListener) it.next();
+	listener.thumbnailProgress(this, percentageDone);
+      }
+  }
+
+  protected void processThumbnailStarted(int imageIndex, int thumbnailIndex)
+  {
+    Iterator it = progressListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadProgressListener listener = (IIOReadProgressListener) it.next();
+	listener.thumbnailStarted(this, imageIndex, thumbnailIndex);
+      }
+  }
+
+  protected void processThumbnailUpdate(BufferedImage image, int minX, int minY,
+					int width, int height, int periodX,
+					int periodY, int[] bands)
+  {
+    Iterator it = updateListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next();
+	listener.thumbnailUpdate(this, image, minX, minY, width, height,
+				 periodX, periodY, bands);
+      }
+  }
+
+  protected void processWarningOccurred(String warning)
+  {
+    Iterator it = warningListeners.iterator();
+
+    while (it.hasNext())
+      {
+	IIOReadWarningListener listener = (IIOReadWarningListener) it.next();
+	listener.warningOccurred(this, warning);
+      }
+  }
+
+  public abstract BufferedImage read(int imageIndex, ImageReadParam param)
+    throws IOException;
+
+  public boolean readerSupportsThumbnails()
+  {
+    return false;
+  }
+
+  public Raster readRaster(int imageIndex, ImageReadParam param)
+    throws IOException
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public BufferedImage readThumbnail(int imageIndex, int thumbnailIndex)
+    throws IOException
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public void removeAllIIOReadProgressListeners()
+  {
+    progressListeners.clear();
+  }
+
+  public void removeAllIIOReadUpdateListeners()
+  {
+    updateListeners.clear();
+  }
+
+  public void removeAllIIOReadWarningListeners()
+  {
+    warningListeners.clear();
+  }
+  
+  public void removeIIOReadProgressListener(IIOReadProgressListener listener) 
+  {
+    if (listener == null)
+      return;
+ 
+    progressListeners.remove(listener);
+  }
+  
+  public void removeIIOReadUpdateListener(IIOReadUpdateListener listener) 
+  {
+    if (listener == null)
+      return;
+    
+    updateListeners.remove(listener);
+  }
+  
+  public void removeIIOReadWarningListener(IIOReadWarningListener listener)
+  {
+    if (listener == null)
+      return;
+    
+    warningListeners.remove(listener);
+  }
+  
+  public void setLocale(Locale locale)
+  {
+    if (locale != null)
+      {
+	// Check if its a valid locale.
+	boolean found = false;
+
+	if (availableLocales != null)
+	  for (int i = availableLocales.length - 1; i >= 0; --i)
+	    if (availableLocales[i].equals(locale))
+	      found = true;
+
+	if (! found)
+	  throw new IllegalArgumentException("looale not available");
+      }
+
+    this.locale = locale;
+  }
+}