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/* ImageReader.java -- Decodes raster images. |
/* ImageReader.java -- Decodes raster images. |
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Copyright (C) 2004 Free Software Foundation, Inc. |
Copyright (C) 2004, 2005 Free Software Foundation, Inc. |
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This file is part of GNU Classpath. |
This file is part of GNU Classpath. |
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package javax.imageio; |
package javax.imageio; |
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import java.awt.Point; |
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import java.awt.Rectangle; |
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import java.awt.image.BufferedImage; |
import java.awt.image.BufferedImage; |
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import java.awt.image.Raster; |
import java.awt.image.Raster; |
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import java.awt.image.RenderedImage; |
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import java.io.IOException; |
import java.io.IOException; |
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import java.util.ArrayList; |
import java.util.ArrayList; |
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import java.util.Iterator; |
import java.util.Iterator; |
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import java.util.List; |
import java.util.List; |
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import java.util.Locale; |
import java.util.Locale; |
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import java.util.ResourceBundle; |
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import java.util.MissingResourceException; |
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import java.util.Set; |
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import javax.imageio.event.IIOReadProgressListener; |
import javax.imageio.event.IIOReadProgressListener; |
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import javax.imageio.event.IIOReadUpdateListener; |
import javax.imageio.event.IIOReadUpdateListener; |
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import javax.imageio.spi.ImageReaderSpi; |
import javax.imageio.spi.ImageReaderSpi; |
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import javax.imageio.stream.ImageInputStream; |
import javax.imageio.stream.ImageInputStream; |
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/** |
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* A class for decoding images within the ImageIO framework. |
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* |
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* An ImageReader for a given format is instantiated by an |
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* ImageReaderSpi for that format. ImageReaderSpis are registered |
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* with the IIORegistry. |
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* |
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* The ImageReader API supports reading animated images that may have |
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* multiple frames; to support such images many methods take an index |
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* parameter. |
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* |
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* Images may also be read in multiple passes, where each successive |
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* pass increases the level of detail in the destination image. |
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*/ |
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public abstract class ImageReader |
public abstract class ImageReader |
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{ |
{ |
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private boolean aborted; |
private boolean aborted; |
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protected Locale[] availableLocales; |
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protected boolean ignoreMetadata; |
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protected Object input; |
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protected Locale locale; |
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protected int minIndex; |
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protected ImageReaderSpi originatingProvider; |
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protected List progressListeners = new ArrayList(); |
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protected boolean seekForwardOnly; |
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protected List updateListeners = new ArrayList(); |
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protected List warningListeners = new ArrayList(); |
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protected List warningLocales = new ArrayList(); |
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/** |
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* All locales available for localization of warning messages, or |
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* null if localization is not supported. |
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*/ |
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protected Locale[] availableLocales = null; |
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/** |
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* true if the input source does not require metadata to be read, |
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* false otherwise. |
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*/ |
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protected boolean ignoreMetadata = false; |
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/** |
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* An ImageInputStream from which image data is read. |
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*/ |
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protected Object input = null; |
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/** |
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* The current locale used to localize warning messages, or null if |
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* no locale has been set. |
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*/ |
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protected Locale locale = null; |
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/** |
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* The minimum index at which data can be read. Constantly 0 if |
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* seekForwardOnly is false, always increasing if seekForwardOnly is |
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* true. |
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*/ |
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protected int minIndex = 0; |
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/** |
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* The image reader SPI that instantiated this reader. |
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*/ |
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protected ImageReaderSpi originatingProvider = null; |
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|
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/** |
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* A list of installed progress listeners. Initially null, meaning |
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* no installed listeners. |
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*/ |
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protected List progressListeners = null; |
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/** |
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* true if this reader should only read data further ahead in the |
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* stream than its current location. false if it can read backwards |
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* in the stream. If this is true then caching can be avoided. |
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*/ |
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protected boolean seekForwardOnly = false; |
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/** |
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* A list of installed update listeners. Initially null, meaning no |
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* installed listeners. |
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*/ |
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protected List updateListeners = null; |
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/** |
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* A list of installed warning listeners. Initially null, meaning |
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* no installed listeners. |
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*/ |
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protected List warningListeners = null; |
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/** |
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* A list of warning locales corresponding with the list of |
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* installed warning listeners. Initially null, meaning no locales. |
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*/ |
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protected List warningLocales = null; |
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/** |
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* Construct an image reader. |
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* |
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* @param originatingProvider the provider that is constructing this |
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* image reader, or null |
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*/ |
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protected ImageReader(ImageReaderSpi originatingProvider) |
protected ImageReader(ImageReaderSpi originatingProvider) |
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{ |
{ |
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this.originatingProvider = originatingProvider; |
this.originatingProvider = originatingProvider; |
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} |
} |
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/** |
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* Request that reading be aborted. The unread contents of the |
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* image will be undefined. |
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* |
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* Readers should clear the abort flag before starting a read |
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* operation, then poll it periodically during the read operation. |
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*/ |
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public void abort() |
public void abort() |
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{ |
{ |
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aborted = true; |
aborted = true; |
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} |
} |
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/** |
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* Check if the abort flag is set. |
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* |
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* @return true if the current read operation should be aborted, |
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* false otherwise |
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*/ |
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protected boolean abortRequested() |
protected boolean abortRequested() |
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{ |
{ |
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return aborted; |
return aborted; |
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} |
} |
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/** |
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* Install a read progress listener. This method will return |
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* immediately if listener is null. |
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* |
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* @param listener a read progress listener or null |
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*/ |
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public void addIIOReadProgressListener(IIOReadProgressListener listener) |
public void addIIOReadProgressListener(IIOReadProgressListener listener) |
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{ |
{ |
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if (listener == null) |
if (listener == null) |
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return; |
return; |
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if (progressListeners == null) |
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progressListeners.add(listener); |
progressListeners = new ArrayList (); |
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progressListeners.add(listener); |
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} |
} |
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/** |
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* Install a read update listener. This method will return |
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* immediately if listener is null. |
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* |
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* @param listener a read update listener |
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*/ |
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public void addIIOReadUpdateListener(IIOReadUpdateListener listener) |
public void addIIOReadUpdateListener(IIOReadUpdateListener listener) |
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{ |
{ |
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if (listener == null) |
if (listener == null) |
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return; |
return; |
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if (updateListeners == null) |
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updateListeners.add(listener); |
updateListeners = new ArrayList (); |
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updateListeners.add(listener); |
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} |
} |
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/** |
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* Install a read warning listener. This method will return |
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* immediately if listener is null. Warning messages sent to this |
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* listener will be localized using the current locale. If the |
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* current locale is null then this reader will select a sensible |
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* default. |
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* |
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* @param listener a read warning listener |
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*/ |
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public void addIIOReadWarningListener(IIOReadWarningListener listener) |
public void addIIOReadWarningListener(IIOReadWarningListener listener) |
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{ |
{ |
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if (listener == null) |
if (listener == null) |
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return; |
return; |
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if (warningListeners == null) |
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warningListeners.add(listener); |
warningListeners = new ArrayList (); |
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warningListeners.add(listener); |
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} |
} |
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/** |
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* Check if this reader can handle raster data. Determines whether |
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* or not readRaster and readTileRaster throw |
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* UnsupportedOperationException. |
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* |
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* @return true if this reader supports raster data, false if not |
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*/ |
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public boolean canReadRaster() |
public boolean canReadRaster() |
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{ |
{ |
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return false; |
return false; |
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} |
} |
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/** |
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* Clear the abort flag. |
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*/ |
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protected void clearAbortRequest() |
protected void clearAbortRequest() |
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{ |
{ |
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aborted = false; |
aborted = false; |
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} |
} |
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/** |
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* Releases any resources allocated to this object. Subsequent |
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* calls to methods on this object will produce undefined results. |
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* |
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* The default implementation does nothing; subclasses should use |
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* this method ensure that native resources are released. |
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*/ |
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public void dispose() |
public void dispose() |
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{ |
{ |
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// The default implementation does nothing. |
// The default implementation does nothing. |
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} |
} |
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/** |
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* Returns the aspect ratio of this image, the ration of its width |
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* to its height. The aspect ratio is useful when resizing an image |
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* while keeping its proportions constant. |
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* |
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* @param imageIndex the frame index |
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* |
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* @return the image's aspect ratio |
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* |
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* @exception IllegalStateException if input is null |
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* @exception IndexOutOfBoundsException if the frame index is |
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* out-of-bounds |
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* @exception IOException if a read error occurs |
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*/ |
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public float getAspectRatio(int imageIndex) |
public float getAspectRatio(int imageIndex) |
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throws IOException |
throws IOException |
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{ |
{ |
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if (input == null) |
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throw new IllegalStateException("input is null"); |
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return (float) (getWidth(imageIndex) / getHeight(imageIndex)); |
return (float) (getWidth(imageIndex) / getHeight(imageIndex)); |
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} |
} |
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/** |
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* Retrieve the available locales. Return null if no locales are |
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* available or a clone of availableLocales. |
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* |
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* @return an array of locales or null |
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*/ |
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public Locale[] getAvailableLocales() |
public Locale[] getAvailableLocales() |
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{ |
{ |
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if (availableLocales == null) |
if (availableLocales == null) |
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return (Locale[]) availableLocales.clone(); |
return (Locale[]) availableLocales.clone(); |
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} |
} |
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/** |
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* Retrieve the default read parameters for this reader's image |
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* format. |
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* |
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* The default implementation returns new ImageReadParam(). |
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* |
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* @return image reading parameters |
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*/ |
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public ImageReadParam getDefaultReadParam() |
public ImageReadParam getDefaultReadParam() |
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{ |
{ |
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return new ImageReadParam(); |
return new ImageReadParam(); |
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} |
} |
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/** |
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* Retrieve the format of the input source. |
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* |
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* @return the input source format name |
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* |
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* @exception IOException if a read error occurs |
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*/ |
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public String getFormatName() |
public String getFormatName() |
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throws IOException |
throws IOException |
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{ |
{ |
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return originatingProvider.getFormatNames()[0]; |
return originatingProvider.getFormatNames()[0]; |
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} |
} |
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/** |
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* Get the height of the input image in pixels. If the input image |
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* is resizable then a default height is returned. |
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* |
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* @param imageIndex the frame index |
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* |
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* @return the height of the input image |
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* |
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* @exception IllegalStateException if input has not been set |
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* @exception IndexOutOfBoundsException if the frame index is |
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* out-of-bounds |
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* @exception IOException if a read error occurs |
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*/ |
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public abstract int getHeight(int imageIndex) |
public abstract int getHeight(int imageIndex) |
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throws IOException; |
throws IOException; |
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/** |
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* Get the metadata associated with this image. If the reader is |
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* set to ignore metadata or does not support reading metadata, or |
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* if no metadata is available then null is returned. |
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* |
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* @param imageIndex the frame index |
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* |
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* @return a metadata object, or null |
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* |
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* @exception IllegalStateException if input has not been set |
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* @exception IndexOutOfBoundsException if the frame index is |
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* out-of-bounds |
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* @exception IOException if a read error occurs |
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*/ |
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public abstract IIOMetadata getImageMetadata(int imageIndex) |
public abstract IIOMetadata getImageMetadata(int imageIndex) |
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throws IOException; |
throws IOException; |
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/** |
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* Get an iterator over the collection of image types into which |
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* this reader can decode image data. This method is guaranteed to |
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* return at least one valid image type specifier. |
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* |
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* The elements of the iterator should be ordered; the first element |
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* should be the most appropriate image type for this decoder, |
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* followed by the second-most appropriate, and so on. |
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* |
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* @param imageIndex the frame index |
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* |
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* @return an iterator over a collection of image type specifiers |
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* |
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* @exception IllegalStateException if input has not been set |
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* @exception IndexOutOfBoundsException if the frame index is |
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* out-of-bounds |
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* @exception IOException if a read error occurs |
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*/ |
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public abstract Iterator getImageTypes(int imageIndex) |
public abstract Iterator getImageTypes(int imageIndex) |
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throws IOException; |
throws IOException; |
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/** |
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* Set the input source to the given object, specify whether this |
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* reader should be allowed to read input from the data stream more |
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* than once, and specify whether this reader should ignore metadata |
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* in the input stream. The input source must be set before many |
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* methods can be called on this reader. (see all ImageReader |
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* methods that throw IllegalStateException). If input is null then |
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* the current input source will be removed. |
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* |
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* Unless this reader has direct access with imaging hardware, input |
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* should be an ImageInputStream. |
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* |
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* @param input the input source object |
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* @param seekForwardOnly true if this reader should be allowed to |
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* read input from the data stream more than once, false otherwise |
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* @param ignoreMetadata true if this reader should ignore metadata |
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* associated with the input source, false otherwise |
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* |
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* @exception IllegalArgumentException if input is not a valid input |
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* source for this reader and is not an ImageInputStream |
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*/ |
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public void setInput(Object input, |
public void setInput(Object input, |
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boolean seekForwardOnly, |
boolean seekForwardOnly, |
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boolean ignoreMetadata) |
boolean ignoreMetadata) |
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this.minIndex = 0; |
this.minIndex = 0; |
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} |
} |
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|
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/** |
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* Set the input source to the given object and specify whether this |
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* reader should be allowed to read input from the data stream more |
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* than once. The input source must be set before many methods can |
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* be called on this reader. (see all ImageReader methods that throw |
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* IllegalStateException). If input is null then the current input |
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* source will be removed. |
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* |
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* @param input the input source object |
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* @param seekForwardOnly true if this reader should be allowed to |
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* read input from the data stream more than once, false otherwise |
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* |
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* @exception IllegalArgumentException if input is not a valid input |
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* source for this reader and is not an ImageInputStream |
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*/ |
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public void setInput(Object in, boolean seekForwardOnly) |
public void setInput(Object in, boolean seekForwardOnly) |
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{ |
{ |
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setInput(in, seekForwardOnly, false); |
setInput(in, seekForwardOnly, false); |
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} |
} |
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|
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public void setInput(Object in) |
/** |
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{ |
* Set the input source to the given object. The input source must |
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setInput(in, false, false); |
* be set before many methods can be called on this reader. (see all |
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} |
* ImageReader methods that throw IllegalStateException). If input |
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* is null then the current input source will be removed. |
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* |
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* @param input the input source object |
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* |
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* @exception IllegalArgumentException if input is not a valid input |
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* source for this reader and is not an ImageInputStream |
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*/ |
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public void setInput(Object input) |
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{ |
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setInput(input, false, false); |
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} |
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|
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/** |
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* Get this reader's image input source. null is returned if the |
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* image source has not been set. |
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* |
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* @return an image input source object, or null |
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*/ |
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public Object getInput() |
public Object getInput() |
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{ |
{ |
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return input; |
return input; |
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} |
} |
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|
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/** |
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* Get this reader's locale. null is returned if the locale has not |
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* been set. |
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* |
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* @return this reader's locale, or null |
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*/ |
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public Locale getLocale() |
public Locale getLocale() |
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{ |
{ |
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return locale; |
return locale; |
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} |
} |
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|
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/** |
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* Return the number of images available from the image input |
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* source, not including thumbnails. This method will return 1 |
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* unless this reader is reading an animated image. |
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* |
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* Certain multi-image formats do not encode the total number of |
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* images. When reading images in those formats it may be necessary |
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* to repeatedly call read, incrementing the image index at each |
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* call, until an IndexOutOfBoundsException is thrown. |
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* |
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* The allowSearch parameter determines whether all images must be |
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* available at all times. When allowSearch is false, getNumImages |
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* will return -1 if the total number of images is unknown. |
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* Otherwise this method returns the number of images. |
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* |
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* @param allowSearch true if all images should be available at |
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* once, false otherwise |
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* |
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* @return -1 if allowSearch is false and the total number of images |
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* is currently unknown, or the number of images |
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* |
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* @exception IllegalStateException if input has not been set, or if |
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* seekForwardOnly is true |
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* @exception IOException if a read error occurs |
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*/ |
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public abstract int getNumImages(boolean allowSearch) |
public abstract int getNumImages(boolean allowSearch) |
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throws IOException; |
throws IOException; |
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|
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/** |
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* Get the number of thumbnails associated with an image. |
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* |
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* @param imageIndex the frame index |
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* |
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* @return the number of thumbnails associated with this image |
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*/ |
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public int getNumThumbnails(int imageIndex) |
public int getNumThumbnails(int imageIndex) |
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throws IOException |
throws IOException |
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{ |
{ |
520 |
return 0; |
return 0; |
521 |
} |
} |
522 |
|
|
523 |
|
/** |
524 |
|
* Get the ImageReaderSpi that created this reader or null. |
525 |
|
* |
526 |
|
* @return an ImageReaderSpi, or null |
527 |
|
*/ |
528 |
public ImageReaderSpi getOriginatingProvider() |
public ImageReaderSpi getOriginatingProvider() |
529 |
{ |
{ |
530 |
return originatingProvider; |
return originatingProvider; |
531 |
} |
} |
532 |
|
|
533 |
|
/** |
534 |
|
* Get the metadata associated with the image being read. If the |
535 |
|
* reader is set to ignore metadata or does not support reading |
536 |
|
* metadata, or if no metadata is available then null is returned. |
537 |
|
* This method returns metadata associated with the entirety of the |
538 |
|
* image data, whereas getImageMetadata(int) returns metadata |
539 |
|
* associated with a frame within a multi-image data stream. |
540 |
|
* |
541 |
|
* @return metadata associated with the image being read, or null |
542 |
|
* |
543 |
|
* @exception IOException if a read error occurs |
544 |
|
*/ |
545 |
public abstract IIOMetadata getStreamMetadata() |
public abstract IIOMetadata getStreamMetadata() |
546 |
throws IOException; |
throws IOException; |
547 |
|
|
548 |
|
/** |
549 |
|
* Get the height of a thumbnail image. |
550 |
|
* |
551 |
|
* @param imageIndex the frame index |
552 |
|
* @param thumbnailIndex the thumbnail index |
553 |
|
* |
554 |
|
* @return the height of the thumbnail image |
555 |
|
* |
556 |
|
* @exception UnsupportedOperationException if this reader does not |
557 |
|
* support thumbnails |
558 |
|
* @exception IllegalStateException if input is null |
559 |
|
* @exception IndexOutOfBoundsException if either index is |
560 |
|
* out-of-bounds |
561 |
|
* @exception IOException if a read error occurs |
562 |
|
*/ |
563 |
public int getThumbnailHeight(int imageIndex, int thumbnailIndex) |
public int getThumbnailHeight(int imageIndex, int thumbnailIndex) |
564 |
throws IOException |
throws IOException |
565 |
{ |
{ |
566 |
return readThumbnail(imageIndex, thumbnailIndex).getHeight(); |
return readThumbnail(imageIndex, thumbnailIndex).getHeight(); |
567 |
} |
} |
568 |
|
|
569 |
|
/** |
570 |
|
* Get the width of a thumbnail image. |
571 |
|
* |
572 |
|
* @param imageIndex the frame index |
573 |
|
* @param thumbnailIndex the thumbnail index |
574 |
|
* |
575 |
|
* @return the width of the thumbnail image |
576 |
|
* |
577 |
|
* @exception UnsupportedOperationException if this reader does not |
578 |
|
* support thumbnails |
579 |
|
* @exception IllegalStateException if input is null |
580 |
|
* @exception IndexOutOfBoundsException if either index is |
581 |
|
* out-of-bounds |
582 |
|
* @exception IOException if a read error occurs |
583 |
|
*/ |
584 |
public int getThumbnailWidth(int imageIndex, int thumbnailIndex) |
public int getThumbnailWidth(int imageIndex, int thumbnailIndex) |
585 |
throws IOException |
throws IOException |
586 |
{ |
{ |
587 |
return readThumbnail(imageIndex, thumbnailIndex).getWidth(); |
return readThumbnail(imageIndex, thumbnailIndex).getWidth(); |
588 |
} |
} |
589 |
|
|
590 |
|
/** |
591 |
|
* Get the X coordinate in pixels of the top-left corner of the |
592 |
|
* first tile in this image. |
593 |
|
* |
594 |
|
* @param imageIndex the frame index |
595 |
|
* |
596 |
|
* @return the X coordinate of this image's first tile |
597 |
|
* |
598 |
|
* @exception IllegalStateException if input is needed but the input |
599 |
|
* source is not set |
600 |
|
* @exception IndexOutOfBoundsException if the frame index is |
601 |
|
* out-of-bounds |
602 |
|
* @exception IOException if a read error occurs |
603 |
|
*/ |
604 |
public int getTileGridXOffset(int imageIndex) |
public int getTileGridXOffset(int imageIndex) |
605 |
throws IOException |
throws IOException |
606 |
{ |
{ |
607 |
return 0; |
return 0; |
608 |
} |
} |
609 |
|
|
610 |
|
/** |
611 |
|
* Get the Y coordinate in pixels of the top-left corner of the |
612 |
|
* first tile in this image. |
613 |
|
* |
614 |
|
* @param imageIndex the frame index |
615 |
|
* |
616 |
|
* @return the Y coordinate of this image's first tile |
617 |
|
* |
618 |
|
* @exception IllegalStateException if input is needed but the input |
619 |
|
* source is not set |
620 |
|
* @exception IndexOutOfBoundsException if the frame index is |
621 |
|
* out-of-bounds |
622 |
|
* @exception IOException if a read error occurs |
623 |
|
*/ |
624 |
public int getTileGridYOffset(int imageIndex) |
public int getTileGridYOffset(int imageIndex) |
625 |
throws IOException |
throws IOException |
626 |
{ |
{ |
627 |
return 0; |
return 0; |
628 |
} |
} |
629 |
|
|
630 |
|
/** |
631 |
|
* Get the height of an image tile. |
632 |
|
* |
633 |
|
* @param imageIndex the frame index |
634 |
|
* |
635 |
|
* @return the tile height for the given image |
636 |
|
* |
637 |
|
* @exception IllegalStateException if input is null |
638 |
|
* @exception IndexOutOfBoundsException if the frame index is |
639 |
|
* out-of-bounds |
640 |
|
* @exception IOException if a read error occurs |
641 |
|
*/ |
642 |
public int getTileHeight(int imageIndex) |
public int getTileHeight(int imageIndex) |
643 |
throws IOException |
throws IOException |
644 |
{ |
{ |
645 |
return getHeight(imageIndex); |
return getHeight(imageIndex); |
646 |
} |
} |
647 |
|
|
648 |
|
/** |
649 |
|
* Get the width of an image tile. |
650 |
|
* |
651 |
|
* @param imageIndex the frame index |
652 |
|
* |
653 |
|
* @return the tile width for the given image |
654 |
|
* |
655 |
|
* @exception IllegalStateException if input is null |
656 |
|
* @exception IndexOutOfBoundsException if the frame index is |
657 |
|
* out-of-bounds |
658 |
|
* @exception IOException if a read error occurs |
659 |
|
*/ |
660 |
public int getTileWidth(int imageIndex) |
public int getTileWidth(int imageIndex) |
661 |
throws IOException |
throws IOException |
662 |
{ |
{ |
663 |
return getWidth(imageIndex); |
return getWidth(imageIndex); |
664 |
} |
} |
665 |
|
|
666 |
|
/** |
667 |
|
* Get the width of the input image in pixels. If the input image |
668 |
|
* is resizable then a default width is returned. |
669 |
|
* |
670 |
|
* @param imageIndex the image's index |
671 |
|
* |
672 |
|
* @return the width of the input image |
673 |
|
* |
674 |
|
* @exception IllegalStateException if input has not been set |
675 |
|
* @exception IndexOutOfBoundsException if the frame index is |
676 |
|
* out-of-bounds |
677 |
|
* @exception IOException if a read error occurs |
678 |
|
*/ |
679 |
public abstract int getWidth(int imageIndex) |
public abstract int getWidth(int imageIndex) |
680 |
throws IOException; |
throws IOException; |
681 |
|
|
682 |
|
/** |
683 |
|
* Check whether or not the given image has thumbnails associated |
684 |
|
* with it. |
685 |
|
* |
686 |
|
* @return true if the given image has thumbnails, false otherwise |
687 |
|
* |
688 |
|
* @exception IllegalStateException if input is null |
689 |
|
* @exception IndexOutOfBoundsException if the frame index is |
690 |
|
* out-of-bounds |
691 |
|
* @exception IOException if a read error occurs |
692 |
|
*/ |
693 |
public boolean hasThumbnails(int imageIndex) |
public boolean hasThumbnails(int imageIndex) |
694 |
throws IOException |
throws IOException |
695 |
{ |
{ |
696 |
return getNumThumbnails(imageIndex) > 0; |
return getNumThumbnails(imageIndex) > 0; |
697 |
} |
} |
698 |
|
|
699 |
|
/** |
700 |
|
* Check if this image reader ignores metadata. This method simply |
701 |
|
* returns the value of ignoreMetadata. |
702 |
|
* |
703 |
|
* @return true if metadata is being ignored, false otherwise |
704 |
|
*/ |
705 |
public boolean isIgnoringMetadata() |
public boolean isIgnoringMetadata() |
706 |
{ |
{ |
707 |
return ignoreMetadata; |
return ignoreMetadata; |
708 |
} |
} |
709 |
|
|
710 |
|
/** |
711 |
|
* Check if the given image is sub-divided into equal-sized |
712 |
|
* non-overlapping pixel rectangles. |
713 |
|
* |
714 |
|
* A reader may expose tiling in the underlying format, hide it, or |
715 |
|
* simulate tiling even if the underlying format is not tiled. |
716 |
|
* |
717 |
|
* @return true if the given image is tiled, false otherwise |
718 |
|
* |
719 |
|
* @exception IllegalStateException if input is null |
720 |
|
* @exception IndexOutOfBoundsException if the frame index is |
721 |
|
* out-of-bounds |
722 |
|
* @exception IOException if a read error occurs |
723 |
|
*/ |
724 |
public boolean isImageTiled(int imageIndex) |
public boolean isImageTiled(int imageIndex) |
725 |
throws IOException |
throws IOException |
726 |
{ |
{ |
727 |
return false; |
return false; |
728 |
} |
} |
729 |
|
|
730 |
|
/** |
731 |
|
* Check if all pixels in this image are readily accessible. This |
732 |
|
* method should return false for compressed formats. The return |
733 |
|
* value is a hint as to the efficiency of certain image reader |
734 |
|
* operations. |
735 |
|
* |
736 |
|
* @param imageIndex the frame index |
737 |
|
* |
738 |
|
* @return true if random pixel access is fast, false otherwise |
739 |
|
* |
740 |
|
* @exception IllegalStateException if input is null and it is |
741 |
|
* needed to determine the return value |
742 |
|
* @exception IndexOutOfBoundsException if the frame index is |
743 |
|
* out-of-bounds but the frame data must be accessed to determine |
744 |
|
* the return value |
745 |
|
* @exception IOException if a read error occurs |
746 |
|
*/ |
747 |
public boolean isRandomAccessEasy(int imageIndex) |
public boolean isRandomAccessEasy(int imageIndex) |
748 |
throws IOException |
throws IOException |
749 |
{ |
{ |
750 |
return false; |
return false; |
751 |
} |
} |
752 |
|
|
753 |
|
/** |
754 |
|
* Check if this image reader may only seek forward within the input |
755 |
|
* stream. |
756 |
|
* |
757 |
|
* @return true if this reader may only seek forward, false |
758 |
|
* otherwise |
759 |
|
*/ |
760 |
public boolean isSeekForwardOnly() |
public boolean isSeekForwardOnly() |
761 |
{ |
{ |
762 |
return seekForwardOnly; |
return seekForwardOnly; |
763 |
} |
} |
764 |
|
|
765 |
|
/** |
766 |
|
* Notifies all installed read progress listeners that image loading |
767 |
|
* has completed by calling their imageComplete methods. |
768 |
|
*/ |
769 |
protected void processImageComplete() |
protected void processImageComplete() |
770 |
{ |
{ |
771 |
Iterator it = progressListeners.iterator(); |
if (progressListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
772 |
{ |
{ |
773 |
IIOReadProgressListener listener = (IIOReadProgressListener) it.next(); |
Iterator it = progressListeners.iterator(); |
774 |
listener.imageComplete (this); |
|
775 |
|
while (it.hasNext()) |
776 |
|
{ |
777 |
|
IIOReadProgressListener listener = |
778 |
|
(IIOReadProgressListener) it.next(); |
779 |
|
listener.imageComplete (this); |
780 |
|
} |
781 |
} |
} |
782 |
} |
} |
783 |
|
|
784 |
|
/** |
785 |
|
* Notifies all installed read progress listeners that a certain |
786 |
|
* percentage of the image has been loaded, by calling their |
787 |
|
* imageProgress methods. |
788 |
|
* |
789 |
|
* @param percentageDone the percentage of image data that has been |
790 |
|
* loaded |
791 |
|
*/ |
792 |
protected void processImageProgress(float percentageDone) |
protected void processImageProgress(float percentageDone) |
793 |
{ |
{ |
794 |
Iterator it = progressListeners.iterator(); |
if (progressListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
795 |
{ |
{ |
796 |
IIOReadProgressListener listener = (IIOReadProgressListener) it.next(); |
Iterator it = progressListeners.iterator(); |
797 |
listener.imageProgress(this, percentageDone); |
|
798 |
|
while (it.hasNext()) |
799 |
|
{ |
800 |
|
IIOReadProgressListener listener = |
801 |
|
(IIOReadProgressListener) it.next(); |
802 |
|
listener.imageProgress(this, percentageDone); |
803 |
|
} |
804 |
} |
} |
805 |
} |
} |
806 |
|
/** |
807 |
|
* Notifies all installed read progress listeners, by calling their |
808 |
|
* imageStarted methods, that image loading has started on the given |
809 |
|
* image. |
810 |
|
* |
811 |
|
* @param imageIndex the frame index of the image that has started |
812 |
|
* loading |
813 |
|
*/ |
814 |
protected void processImageStarted(int imageIndex) |
protected void processImageStarted(int imageIndex) |
815 |
{ |
{ |
816 |
Iterator it = progressListeners.iterator(); |
if (progressListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
817 |
{ |
{ |
818 |
IIOReadProgressListener listener = (IIOReadProgressListener) it.next(); |
Iterator it = progressListeners.iterator(); |
819 |
listener.imageStarted(this, imageIndex); |
|
820 |
|
while (it.hasNext()) |
821 |
|
{ |
822 |
|
IIOReadProgressListener listener = |
823 |
|
(IIOReadProgressListener) it.next(); |
824 |
|
listener.imageStarted(this, imageIndex); |
825 |
|
} |
826 |
} |
} |
827 |
} |
} |
828 |
|
|
829 |
|
/** |
830 |
|
* Notifies all installed read update listeners, by calling their |
831 |
|
* imageUpdate methods, that the set of samples has changed. |
832 |
|
* |
833 |
|
* @param image the buffered image that is being updated |
834 |
|
* @param minX the X coordinate of the top-left pixel in this pass |
835 |
|
* @param minY the Y coordinate of the top-left pixel in this pass |
836 |
|
* @param width the total width of the rectangle covered by this |
837 |
|
* pass, including skipped pixels |
838 |
|
* @param height the total height of the rectangle covered by this |
839 |
|
* pass, including skipped pixels |
840 |
|
* @param periodX the horizontal sample interval |
841 |
|
* @param periodY the vertical sample interval |
842 |
|
* @param bands the affected bands in the destination |
843 |
|
*/ |
844 |
protected void processImageUpdate(BufferedImage image, int minX, int minY, |
protected void processImageUpdate(BufferedImage image, int minX, int minY, |
845 |
int width, int height, int periodX, |
int width, int height, int periodX, |
846 |
int periodY, int[] bands) |
int periodY, int[] bands) |
847 |
{ |
{ |
848 |
Iterator it = updateListeners.iterator(); |
if (updateListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
849 |
{ |
{ |
850 |
IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next(); |
Iterator it = updateListeners.iterator(); |
851 |
listener.imageUpdate(this, image, minX, minY, width, height, periodX, |
|
852 |
periodY, bands); |
while (it.hasNext()) |
853 |
|
{ |
854 |
|
IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next(); |
855 |
|
listener.imageUpdate(this, image, minX, minY, width, height, |
856 |
|
periodX, periodY, bands); |
857 |
|
} |
858 |
} |
} |
859 |
} |
} |
860 |
|
|
861 |
|
/** |
862 |
|
* Notifies all installed update progress listeners, by calling |
863 |
|
* their passComplete methods, that a progressive pass has |
864 |
|
* completed. |
865 |
|
* |
866 |
|
* @param image the image that has being updated |
867 |
|
*/ |
868 |
protected void processPassComplete(BufferedImage image) |
protected void processPassComplete(BufferedImage image) |
869 |
{ |
{ |
870 |
Iterator it = updateListeners.iterator(); |
if (updateListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
871 |
{ |
{ |
872 |
IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next(); |
Iterator it = updateListeners.iterator(); |
873 |
listener.passComplete(this, image); |
|
874 |
|
while (it.hasNext()) |
875 |
|
{ |
876 |
|
IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next(); |
877 |
|
listener.passComplete(this, image); |
878 |
|
} |
879 |
} |
} |
880 |
} |
} |
881 |
|
|
882 |
|
/** |
883 |
|
* Notifies all installed read update listeners, by calling their |
884 |
|
* passStarted methods, that a new pass has begun. |
885 |
|
* |
886 |
|
* @param image the buffered image that is being updated |
887 |
|
* @param pass the current pass number |
888 |
|
* @param minPass the pass at which decoding will begin |
889 |
|
* @param maxPass the pass at which decoding will end |
890 |
|
* @param minX the X coordinate of the top-left pixel in this pass |
891 |
|
* @param minY the Y coordinate of the top-left pixel in this pass |
892 |
|
* @param width the total width of the rectangle covered by this |
893 |
|
* pass, including skipped pixels |
894 |
|
* @param height the total height of the rectangle covered by this |
895 |
|
* pass, including skipped pixels |
896 |
|
* @param periodX the horizontal sample interval |
897 |
|
* @param periodY the vertical sample interval |
898 |
|
* @param bands the affected bands in the destination |
899 |
|
*/ |
900 |
protected void processPassStarted(BufferedImage image, int pass, int minPass, |
protected void processPassStarted(BufferedImage image, int pass, int minPass, |
901 |
int maxPass, int minX, int minY, |
int maxPass, int minX, int minY, |
902 |
int periodX, int periodY, int[] bands) |
int periodX, int periodY, int[] bands) |
903 |
{ |
{ |
904 |
Iterator it = updateListeners.iterator(); |
if (updateListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
905 |
{ |
{ |
906 |
IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next(); |
Iterator it = updateListeners.iterator(); |
907 |
listener.passStarted(this, image, pass, minPass, maxPass, minX, minY, |
|
908 |
periodX, periodY, bands); |
while (it.hasNext()) |
909 |
|
{ |
910 |
|
IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next(); |
911 |
|
listener.passStarted(this, image, pass, minPass, maxPass, minX, |
912 |
|
minY, periodX, periodY, bands); |
913 |
|
} |
914 |
} |
} |
915 |
} |
} |
916 |
|
|
917 |
|
/** |
918 |
|
* Notifies all installed read progress listeners that image loading |
919 |
|
* has been aborted by calling their readAborted methods. |
920 |
|
*/ |
921 |
protected void processReadAborted() |
protected void processReadAborted() |
922 |
{ |
{ |
923 |
Iterator it = progressListeners.iterator(); |
if (progressListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
924 |
{ |
{ |
925 |
IIOReadProgressListener listener = (IIOReadProgressListener) it.next(); |
Iterator it = progressListeners.iterator(); |
926 |
listener.readAborted(this); |
|
927 |
|
while (it.hasNext()) |
928 |
|
{ |
929 |
|
IIOReadProgressListener listener = |
930 |
|
(IIOReadProgressListener) it.next(); |
931 |
|
listener.readAborted(this); |
932 |
|
} |
933 |
} |
} |
934 |
} |
} |
935 |
|
/** |
936 |
|
* Notifies all installed read progress listeners, by calling their |
937 |
|
* sequenceComplete methods, that a sequence of images has completed |
938 |
|
* loading. |
939 |
|
*/ |
940 |
protected void processSequenceComplete() |
protected void processSequenceComplete() |
941 |
{ |
{ |
942 |
Iterator it = progressListeners.iterator(); |
if (progressListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
943 |
{ |
{ |
944 |
IIOReadProgressListener listener = (IIOReadProgressListener) it.next(); |
Iterator it = progressListeners.iterator(); |
945 |
listener.sequenceComplete(this); |
|
946 |
|
while (it.hasNext()) |
947 |
|
{ |
948 |
|
IIOReadProgressListener listener = |
949 |
|
(IIOReadProgressListener) it.next(); |
950 |
|
listener.sequenceComplete(this); |
951 |
|
} |
952 |
} |
} |
953 |
} |
} |
954 |
|
|
955 |
|
/** |
956 |
|
* Notifies all installed read progress listeners, by calling their |
957 |
|
* sequenceStarted methods, a sequence of images has started |
958 |
|
* loading. |
959 |
|
* |
960 |
|
* @param minIndex the index of the first image in the sequence |
961 |
|
*/ |
962 |
protected void processSequenceStarted(int minIndex) |
protected void processSequenceStarted(int minIndex) |
963 |
{ |
{ |
|
Iterator it = progressListeners.iterator(); |
|
964 |
|
|
965 |
while (it.hasNext()) |
if (progressListeners != null) |
966 |
{ |
{ |
967 |
IIOReadProgressListener listener = (IIOReadProgressListener) it.next(); |
Iterator it = progressListeners.iterator(); |
968 |
listener.sequenceStarted(this, minIndex); |
|
969 |
|
while (it.hasNext()) |
970 |
|
{ |
971 |
|
IIOReadProgressListener listener = |
972 |
|
(IIOReadProgressListener) it.next(); |
973 |
|
listener.sequenceStarted(this, minIndex); |
974 |
|
} |
975 |
} |
} |
976 |
} |
} |
977 |
|
|
978 |
|
/** |
979 |
|
* Notifies all installed read progress listeners, by calling their |
980 |
|
* thumbnailComplete methods, that a thumbnail has completed |
981 |
|
* loading. |
982 |
|
*/ |
983 |
protected void processThumbnailComplete() |
protected void processThumbnailComplete() |
984 |
{ |
{ |
985 |
Iterator it = progressListeners.iterator(); |
if (progressListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
986 |
{ |
{ |
987 |
IIOReadProgressListener listener = (IIOReadProgressListener) it.next(); |
Iterator it = progressListeners.iterator(); |
988 |
listener.thumbnailComplete(this); |
|
989 |
|
while (it.hasNext()) |
990 |
|
{ |
991 |
|
IIOReadProgressListener listener = |
992 |
|
(IIOReadProgressListener) it.next(); |
993 |
|
listener.thumbnailComplete(this); |
994 |
|
} |
995 |
} |
} |
996 |
} |
} |
997 |
|
|
998 |
|
/** |
999 |
|
* Notifies all installed update progress listeners, by calling |
1000 |
|
* their thumbnailPassComplete methods, that a progressive pass has |
1001 |
|
* completed on a thumbnail. |
1002 |
|
* |
1003 |
|
* @param thumbnail the thumbnail that has being updated |
1004 |
|
*/ |
1005 |
protected void processThumbnailPassComplete(BufferedImage thumbnail) |
protected void processThumbnailPassComplete(BufferedImage thumbnail) |
1006 |
{ |
{ |
1007 |
Iterator it = updateListeners.iterator(); |
if (updateListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
1008 |
{ |
{ |
1009 |
IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next(); |
Iterator it = updateListeners.iterator(); |
1010 |
listener.thumbnailPassComplete(this, thumbnail); |
|
1011 |
|
while (it.hasNext()) |
1012 |
|
{ |
1013 |
|
IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next(); |
1014 |
|
listener.thumbnailPassComplete(this, thumbnail); |
1015 |
|
} |
1016 |
} |
} |
1017 |
} |
} |
1018 |
|
|
1019 |
|
/** |
1020 |
|
* Notifies all installed read update listeners, by calling their |
1021 |
|
* thumbnailPassStarted methods, that a new pass has begun. |
1022 |
|
* |
1023 |
|
* @param thumbnail the thumbnail that is being updated |
1024 |
|
* @param pass the current pass number |
1025 |
|
* @param minPass the pass at which decoding will begin |
1026 |
|
* @param maxPass the pass at which decoding will end |
1027 |
|
* @param minX the X coordinate of the top-left pixel in this pass |
1028 |
|
* @param minY the Y coordinate of the top-left pixel in this pass |
1029 |
|
* @param width the total width of the rectangle covered by this |
1030 |
|
* pass, including skipped pixels |
1031 |
|
* @param height the total height of the rectangle covered by this |
1032 |
|
* pass, including skipped pixels |
1033 |
|
* @param periodX the horizontal sample interval |
1034 |
|
* @param periodY the vertical sample interval |
1035 |
|
* @param bands the affected bands in the destination |
1036 |
|
*/ |
1037 |
protected void processThumbnailPassStarted(BufferedImage thumbnail, int pass, |
protected void processThumbnailPassStarted(BufferedImage thumbnail, int pass, |
1038 |
int minPass, int maxPass, int minX, |
int minPass, int maxPass, int minX, |
1039 |
int minY, int periodX, int periodY, |
int minY, int periodX, int periodY, |
1040 |
int[] bands) |
int[] bands) |
1041 |
{ |
{ |
1042 |
Iterator it = updateListeners.iterator(); |
if (updateListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
1043 |
{ |
{ |
1044 |
IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next(); |
Iterator it = updateListeners.iterator(); |
1045 |
listener.thumbnailPassStarted(this, thumbnail, pass, minPass, maxPass, |
|
1046 |
minX, minY, periodX, periodY, bands); |
while (it.hasNext()) |
1047 |
|
{ |
1048 |
|
IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next(); |
1049 |
|
listener.thumbnailPassStarted(this, thumbnail, pass, minPass, |
1050 |
|
maxPass, minX, minY, periodX, |
1051 |
|
periodY, bands); |
1052 |
|
} |
1053 |
} |
} |
1054 |
} |
} |
1055 |
|
|
1056 |
|
/** |
1057 |
|
* Notifies all installed read progress listeners that a certain |
1058 |
|
* percentage of a thumbnail has been loaded, by calling their |
1059 |
|
* thumbnailProgress methods. |
1060 |
|
* |
1061 |
|
* @param percentageDone the percentage of thumbnail data that has |
1062 |
|
* been loaded |
1063 |
|
*/ |
1064 |
protected void processThumbnailProgress(float percentageDone) |
protected void processThumbnailProgress(float percentageDone) |
1065 |
{ |
{ |
1066 |
Iterator it = progressListeners.iterator(); |
if (progressListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
1067 |
{ |
{ |
1068 |
IIOReadProgressListener listener = (IIOReadProgressListener) it.next(); |
Iterator it = progressListeners.iterator(); |
1069 |
listener.thumbnailProgress(this, percentageDone); |
|
1070 |
|
while (it.hasNext()) |
1071 |
|
{ |
1072 |
|
IIOReadProgressListener listener = |
1073 |
|
(IIOReadProgressListener) it.next(); |
1074 |
|
listener.thumbnailProgress(this, percentageDone); |
1075 |
|
} |
1076 |
} |
} |
1077 |
} |
} |
1078 |
|
|
1079 |
|
/** |
1080 |
|
* Notifies all installed read progress listeners, by calling their |
1081 |
|
* imageStarted methods, that thumbnail loading has started on the |
1082 |
|
* given thumbnail of the given image. |
1083 |
|
* |
1084 |
|
* @param imageIndex the frame index of the image one of who's |
1085 |
|
* thumbnails has started loading |
1086 |
|
* @param thumbnailIndex the index of the thumbnail that has started |
1087 |
|
* loading |
1088 |
|
*/ |
1089 |
protected void processThumbnailStarted(int imageIndex, int thumbnailIndex) |
protected void processThumbnailStarted(int imageIndex, int thumbnailIndex) |
1090 |
{ |
{ |
1091 |
Iterator it = progressListeners.iterator(); |
if (progressListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
1092 |
{ |
{ |
1093 |
IIOReadProgressListener listener = (IIOReadProgressListener) it.next(); |
Iterator it = progressListeners.iterator(); |
1094 |
listener.thumbnailStarted(this, imageIndex, thumbnailIndex); |
|
1095 |
|
while (it.hasNext()) |
1096 |
|
{ |
1097 |
|
IIOReadProgressListener listener = |
1098 |
|
(IIOReadProgressListener) it.next(); |
1099 |
|
listener.thumbnailStarted(this, imageIndex, thumbnailIndex); |
1100 |
|
} |
1101 |
} |
} |
1102 |
} |
} |
1103 |
|
|
1104 |
|
/** |
1105 |
|
* Notifies all installed read update listeners, by calling their |
1106 |
|
* thumbnailUpdate methods, that the set of samples has changed. |
1107 |
|
* |
1108 |
|
* @param image the buffered image that is being updated |
1109 |
|
* @param minX the X coordinate of the top-left pixel in this pass |
1110 |
|
* @param minY the Y coordinate of the top-left pixel in this pass |
1111 |
|
* @param width the total width of the rectangle covered by this |
1112 |
|
* pass, including skipped pixels |
1113 |
|
* @param height the total height of the rectangle covered by this |
1114 |
|
* pass, including skipped pixels |
1115 |
|
* @param periodX the horizontal sample interval |
1116 |
|
* @param periodY the vertical sample interval |
1117 |
|
* @param bands the affected bands in the destination |
1118 |
|
*/ |
1119 |
protected void processThumbnailUpdate(BufferedImage image, int minX, int minY, |
protected void processThumbnailUpdate(BufferedImage image, int minX, int minY, |
1120 |
int width, int height, int periodX, |
int width, int height, int periodX, |
1121 |
int periodY, int[] bands) |
int periodY, int[] bands) |
1122 |
{ |
{ |
1123 |
Iterator it = updateListeners.iterator(); |
if (updateListeners != null) |
|
|
|
|
while (it.hasNext()) |
|
1124 |
{ |
{ |
1125 |
IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next(); |
Iterator it = updateListeners.iterator(); |
1126 |
listener.thumbnailUpdate(this, image, minX, minY, width, height, |
|
1127 |
periodX, periodY, bands); |
while (it.hasNext()) |
1128 |
|
{ |
1129 |
|
IIOReadUpdateListener listener = (IIOReadUpdateListener) it.next(); |
1130 |
|
listener.thumbnailUpdate(this, image, minX, minY, width, height, |
1131 |
|
periodX, periodY, bands); |
1132 |
|
} |
1133 |
} |
} |
1134 |
} |
} |
1135 |
|
|
1136 |
|
/** |
1137 |
|
* Notifies all installed warning listeners, by calling their |
1138 |
|
* warningOccurred methods, that a warning message has been raised. |
1139 |
|
* |
1140 |
|
* @param warning the warning message |
1141 |
|
* |
1142 |
|
* @exception IllegalArgumentException if warning is null |
1143 |
|
*/ |
1144 |
protected void processWarningOccurred(String warning) |
protected void processWarningOccurred(String warning) |
1145 |
{ |
{ |
1146 |
Iterator it = warningListeners.iterator(); |
if (warning == null) |
1147 |
|
throw new IllegalArgumentException ("null argument"); |
1148 |
|
if (warningListeners != null) |
1149 |
|
{ |
1150 |
|
Iterator it = warningListeners.iterator(); |
1151 |
|
|
1152 |
|
while (it.hasNext()) |
1153 |
|
{ |
1154 |
|
IIOReadWarningListener listener = |
1155 |
|
(IIOReadWarningListener) it.next(); |
1156 |
|
listener.warningOccurred(this, warning); |
1157 |
|
} |
1158 |
|
} |
1159 |
|
} |
1160 |
|
|
1161 |
|
/** |
1162 |
|
* Notify all installed warning listeners, by calling their |
1163 |
|
* warningOccurred methods, that a warning message has been raised. |
1164 |
|
* The warning message is retrieved from a resource bundle, using |
1165 |
|
* the given basename and keyword. |
1166 |
|
* |
1167 |
|
* @param baseName the basename of the resource from which to |
1168 |
|
* retrieve the warning message |
1169 |
|
* @param keyword the keyword used to retrieve the warning from the |
1170 |
|
* resource bundle |
1171 |
|
* |
1172 |
|
* @exception IllegalArgumentException if either baseName or keyword |
1173 |
|
* is null |
1174 |
|
* @exception IllegalArgumentException if no resource bundle is |
1175 |
|
* found using baseName |
1176 |
|
* @exception IllegalArgumentException if the given keyword produces |
1177 |
|
* no results from the resource bundle |
1178 |
|
* @exception IllegalArgumentException if the retrieved object is |
1179 |
|
* not a String |
1180 |
|
*/ |
1181 |
|
protected void processWarningOccurred(String baseName, |
1182 |
|
String keyword) |
1183 |
|
{ |
1184 |
|
if (baseName == null || keyword == null) |
1185 |
|
throw new IllegalArgumentException ("null argument"); |
1186 |
|
|
1187 |
|
ResourceBundle b = null; |
1188 |
|
|
1189 |
|
try |
1190 |
|
{ |
1191 |
|
b = ResourceBundle.getBundle(baseName, getLocale()); |
1192 |
|
} |
1193 |
|
catch (MissingResourceException e) |
1194 |
|
{ |
1195 |
|
throw new IllegalArgumentException ("no resource bundle found"); |
1196 |
|
} |
1197 |
|
|
1198 |
|
Object str = null; |
1199 |
|
|
1200 |
|
try |
1201 |
|
{ |
1202 |
|
str = b.getObject(keyword); |
1203 |
|
} |
1204 |
|
catch (MissingResourceException e) |
1205 |
|
{ |
1206 |
|
throw new IllegalArgumentException ("no results found for keyword"); |
1207 |
|
} |
1208 |
|
|
1209 |
|
if (! (str instanceof String)) |
1210 |
|
throw new IllegalArgumentException ("retrieved object not a String"); |
1211 |
|
|
1212 |
|
String warning = (String) str; |
1213 |
|
|
1214 |
while (it.hasNext()) |
if (warningListeners != null) |
1215 |
{ |
{ |
1216 |
IIOReadWarningListener listener = (IIOReadWarningListener) it.next(); |
Iterator it = warningListeners.iterator(); |
1217 |
listener.warningOccurred(this, warning); |
|
1218 |
|
while (it.hasNext()) |
1219 |
|
{ |
1220 |
|
IIOReadWarningListener listener = |
1221 |
|
(IIOReadWarningListener) it.next(); |
1222 |
|
listener.warningOccurred(this, warning); |
1223 |
|
} |
1224 |
} |
} |
1225 |
} |
} |
1226 |
|
|
1227 |
|
/** |
1228 |
|
* Read the given frame into a buffered image using the given read |
1229 |
|
* parameters. Listeners will be notified of image loading progress |
1230 |
|
* and warnings. |
1231 |
|
* |
1232 |
|
* @param imageIndex the index of the frame to read |
1233 |
|
* @param param the image read parameters to use when reading |
1234 |
|
* |
1235 |
|
* @return a buffered image |
1236 |
|
* |
1237 |
|
* @exception IllegalStateException if input is null |
1238 |
|
* @exception IndexOutOfBoundsException if the frame index is |
1239 |
|
* out-of-bounds |
1240 |
|
* @exception IOException if a read error occurs |
1241 |
|
*/ |
1242 |
public abstract BufferedImage read(int imageIndex, ImageReadParam param) |
public abstract BufferedImage read(int imageIndex, ImageReadParam param) |
1243 |
throws IOException; |
throws IOException; |
1244 |
|
|
1245 |
|
/** |
1246 |
|
* Check if this reader supports reading thumbnails. |
1247 |
|
* |
1248 |
|
* @return true if this reader supports reading thumbnails, false |
1249 |
|
* otherwise |
1250 |
|
*/ |
1251 |
public boolean readerSupportsThumbnails() |
public boolean readerSupportsThumbnails() |
1252 |
{ |
{ |
1253 |
return false; |
return false; |
1254 |
} |
} |
1255 |
|
|
1256 |
|
/** |
1257 |
|
* Read raw raster data. The image type specifier in param is |
1258 |
|
* ignored but all other parameters are used. Offset parameters are |
1259 |
|
* translated into the raster's coordinate space. This method may |
1260 |
|
* be implemented by image readers that want to provide direct |
1261 |
|
* access to raw image data. |
1262 |
|
* |
1263 |
|
* @param imageIndex the frame index |
1264 |
|
* @param param the image read parameters |
1265 |
|
* |
1266 |
|
* @return a raster containing the read image data |
1267 |
|
* |
1268 |
|
* @exception UnsupportedOperationException if this reader doesn't |
1269 |
|
* support rasters |
1270 |
|
* @exception IllegalStateException if input is null |
1271 |
|
* @exception IndexOutOfBoundsException if the frame index is |
1272 |
|
* out-of-bounds |
1273 |
|
* @exception IOException if a read error occurs |
1274 |
|
*/ |
1275 |
public Raster readRaster(int imageIndex, ImageReadParam param) |
public Raster readRaster(int imageIndex, ImageReadParam param) |
1276 |
throws IOException |
throws IOException |
1277 |
{ |
{ |
1278 |
throw new UnsupportedOperationException(); |
throw new UnsupportedOperationException(); |
1279 |
} |
} |
1280 |
|
|
1281 |
|
/** |
1282 |
|
* Read a thumbnail. |
1283 |
|
* |
1284 |
|
* @param imageIndex the frame index |
1285 |
|
* @param thumbnailIndex the thumbnail index |
1286 |
|
* |
1287 |
|
* @return a buffered image of the thumbnail |
1288 |
|
* |
1289 |
|
* @exception UnsupportedOperationException if this reader doesn't |
1290 |
|
* support thumbnails |
1291 |
|
* @exception IllegalStateException if input is null |
1292 |
|
* @exception IndexOutOfBoundsException if either the frame index or |
1293 |
|
* the thumbnail index is out-of-bounds |
1294 |
|
* @exception IOException if a read error occurs |
1295 |
|
* |
1296 |
|
*/ |
1297 |
public BufferedImage readThumbnail(int imageIndex, int thumbnailIndex) |
public BufferedImage readThumbnail(int imageIndex, int thumbnailIndex) |
1298 |
throws IOException |
throws IOException |
1299 |
{ |
{ |
1300 |
throw new UnsupportedOperationException(); |
throw new UnsupportedOperationException(); |
1301 |
} |
} |
1302 |
|
|
1303 |
|
/** |
1304 |
|
* Uninstall all read progress listeners. |
1305 |
|
*/ |
1306 |
public void removeAllIIOReadProgressListeners() |
public void removeAllIIOReadProgressListeners() |
1307 |
{ |
{ |
1308 |
progressListeners.clear(); |
progressListeners = null; |
1309 |
} |
} |
1310 |
|
|
1311 |
|
/** |
1312 |
|
* Uninstall all read update listeners. |
1313 |
|
*/ |
1314 |
public void removeAllIIOReadUpdateListeners() |
public void removeAllIIOReadUpdateListeners() |
1315 |
{ |
{ |
1316 |
updateListeners.clear(); |
updateListeners = null; |
1317 |
} |
} |
1318 |
|
|
1319 |
|
/** |
1320 |
|
* Uninstall all read warning listeners. |
1321 |
|
*/ |
1322 |
public void removeAllIIOReadWarningListeners() |
public void removeAllIIOReadWarningListeners() |
1323 |
{ |
{ |
1324 |
warningListeners.clear(); |
warningListeners = null; |
1325 |
} |
} |
1326 |
|
|
1327 |
|
/** |
1328 |
|
* Uninstall the given read progress listener. |
1329 |
|
* |
1330 |
|
* @param listener the listener to remove |
1331 |
|
*/ |
1332 |
public void removeIIOReadProgressListener(IIOReadProgressListener listener) |
public void removeIIOReadProgressListener(IIOReadProgressListener listener) |
1333 |
{ |
{ |
1334 |
if (listener == null) |
if (listener == null) |
1335 |
return; |
return; |
1336 |
|
if (progressListeners != null) |
1337 |
progressListeners.remove(listener); |
{ |
1338 |
|
progressListeners.remove(listener); |
1339 |
|
} |
1340 |
} |
} |
1341 |
|
|
1342 |
|
/** |
1343 |
|
* Uninstall the given read update listener. |
1344 |
|
* |
1345 |
|
* @param listener the listener to remove |
1346 |
|
*/ |
1347 |
public void removeIIOReadUpdateListener(IIOReadUpdateListener listener) |
public void removeIIOReadUpdateListener(IIOReadUpdateListener listener) |
1348 |
{ |
{ |
1349 |
if (listener == null) |
if (listener == null) |
1350 |
return; |
return; |
1351 |
|
|
1352 |
updateListeners.remove(listener); |
if (updateListeners != null) |
1353 |
|
{ |
1354 |
|
updateListeners.remove(listener); |
1355 |
|
} |
1356 |
} |
} |
1357 |
|
|
1358 |
|
/** |
1359 |
|
* Uninstall the given read warning listener. |
1360 |
|
* |
1361 |
|
* @param listener the listener to remove |
1362 |
|
*/ |
1363 |
public void removeIIOReadWarningListener(IIOReadWarningListener listener) |
public void removeIIOReadWarningListener(IIOReadWarningListener listener) |
1364 |
{ |
{ |
1365 |
if (listener == null) |
if (listener == null) |
1366 |
return; |
return; |
1367 |
|
if (warningListeners != null) |
1368 |
warningListeners.remove(listener); |
{ |
1369 |
|
warningListeners.remove(listener); |
1370 |
|
} |
1371 |
} |
} |
1372 |
|
|
1373 |
|
/** |
1374 |
|
* Set the current locale or use the default locale. |
1375 |
|
* |
1376 |
|
* @param locale the locale to set, or null |
1377 |
|
*/ |
1378 |
public void setLocale(Locale locale) |
public void setLocale(Locale locale) |
1379 |
{ |
{ |
1380 |
if (locale != null) |
if (locale != null) |
1393 |
|
|
1394 |
this.locale = locale; |
this.locale = locale; |
1395 |
} |
} |
1396 |
|
|
1397 |
|
/** |
1398 |
|
* Check that the given read parameters have valid source and |
1399 |
|
* destination band settings. If the param.getSourceBands() returns |
1400 |
|
* null, the array is assumed to include all band indices, 0 to |
1401 |
|
* numSrcBands - 1; likewise if param.getDestinationBands() returns |
1402 |
|
* null, it is assumed to be an array containing indices 0 to |
1403 |
|
* numDstBands - 1. A failure will cause this method to throw |
1404 |
|
* IllegalArgumentException. |
1405 |
|
* |
1406 |
|
* @param param the image parameters to check |
1407 |
|
* @param numSrcBands the number of input source bands |
1408 |
|
* @param numDstBands the number of ouput destination bands |
1409 |
|
* |
1410 |
|
* @exception IllegalArgumentException if either the given source or |
1411 |
|
* destination band indices are invalid |
1412 |
|
*/ |
1413 |
|
protected static void checkReadParamBandSettings(ImageReadParam param, |
1414 |
|
int numSrcBands, |
1415 |
|
int numDstBands) |
1416 |
|
{ |
1417 |
|
int[] srcBands = param.getSourceBands(); |
1418 |
|
int[] dstBands = param.getDestinationBands(); |
1419 |
|
boolean lengthsDiffer = false; |
1420 |
|
boolean srcOOB = false; |
1421 |
|
boolean dstOOB = false; |
1422 |
|
|
1423 |
|
if (srcBands == null) |
1424 |
|
{ |
1425 |
|
if (dstBands == null) |
1426 |
|
{ |
1427 |
|
if (numSrcBands != numDstBands) |
1428 |
|
lengthsDiffer = true; |
1429 |
|
} |
1430 |
|
else |
1431 |
|
{ |
1432 |
|
if (numSrcBands != dstBands.length) |
1433 |
|
lengthsDiffer = true; |
1434 |
|
|
1435 |
|
for (int i = 0; i < dstBands.length; i++) |
1436 |
|
if (dstBands[i] > numSrcBands - 1) |
1437 |
|
{ |
1438 |
|
dstOOB = true; |
1439 |
|
break; |
1440 |
|
} |
1441 |
|
} |
1442 |
|
} |
1443 |
|
else |
1444 |
|
{ |
1445 |
|
if (dstBands == null) |
1446 |
|
{ |
1447 |
|
if (srcBands.length != numDstBands) |
1448 |
|
lengthsDiffer = true; |
1449 |
|
|
1450 |
|
for (int i = 0; i < srcBands.length; i++) |
1451 |
|
if (srcBands[i] > numDstBands - 1) |
1452 |
|
{ |
1453 |
|
srcOOB = true; |
1454 |
|
break; |
1455 |
|
} |
1456 |
|
} |
1457 |
|
else |
1458 |
|
{ |
1459 |
|
if (srcBands.length != dstBands.length) |
1460 |
|
lengthsDiffer = true; |
1461 |
|
|
1462 |
|
for (int i = 0; i < srcBands.length; i++) |
1463 |
|
if (srcBands[i] > numDstBands - 1) |
1464 |
|
{ |
1465 |
|
srcOOB = true; |
1466 |
|
break; |
1467 |
|
} |
1468 |
|
|
1469 |
|
for (int i = 0; i < dstBands.length; i++) |
1470 |
|
if (dstBands[i] > numSrcBands - 1) |
1471 |
|
{ |
1472 |
|
dstOOB = true; |
1473 |
|
break; |
1474 |
|
} |
1475 |
|
} |
1476 |
|
} |
1477 |
|
|
1478 |
|
if (lengthsDiffer) |
1479 |
|
throw new IllegalArgumentException ("array lengths differ"); |
1480 |
|
|
1481 |
|
if (srcOOB) |
1482 |
|
throw new IllegalArgumentException ("source band index" |
1483 |
|
+ " out-of-bounds"); |
1484 |
|
|
1485 |
|
if (dstOOB) |
1486 |
|
throw new IllegalArgumentException ("destination band index" |
1487 |
|
+ " out-of-bounds"); |
1488 |
|
} |
1489 |
|
|
1490 |
|
/** |
1491 |
|
* Calcluate the source and destination regions that will be read |
1492 |
|
* from and written to, given image parameters and/or a destination |
1493 |
|
* buffered image. The source region will be clipped if any of its |
1494 |
|
* bounds are outside the destination region. Clipping will account |
1495 |
|
* for subsampling and destination offsets. Likewise, the |
1496 |
|
* destination region is clipped to the given destination image, if |
1497 |
|
* it is not null, using the given image parameters, if they are not |
1498 |
|
* null. IllegalArgumentException is thrown if either region will |
1499 |
|
* contain 0 pixels after clipping. |
1500 |
|
* |
1501 |
|
* @param image read parameters, or null |
1502 |
|
* @param srcWidth the width of the source image |
1503 |
|
* @param srcHeight the height of the source image |
1504 |
|
* @param image the destination image, or null |
1505 |
|
* @param srcRegion a rectangle whose values will be set to the |
1506 |
|
* clipped source region |
1507 |
|
* @param destRegion a rectangle whose values will be set to the |
1508 |
|
* clipped destination region |
1509 |
|
* |
1510 |
|
* @exception IllegalArgumentException if either srcRegion or |
1511 |
|
* destRegion is null |
1512 |
|
* @exception IllegalArgumentException if either of the calculated |
1513 |
|
* regions is empty |
1514 |
|
*/ |
1515 |
|
protected static void computeRegions (ImageReadParam param, |
1516 |
|
int srcWidth, |
1517 |
|
int srcHeight, |
1518 |
|
BufferedImage image, |
1519 |
|
Rectangle srcRegion, |
1520 |
|
Rectangle destRegion) |
1521 |
|
{ |
1522 |
|
if (srcRegion == null || destRegion == null) |
1523 |
|
throw new IllegalArgumentException ("null region"); |
1524 |
|
|
1525 |
|
if (srcWidth == 0 || srcHeight == 0) |
1526 |
|
throw new IllegalArgumentException ("zero-sized region"); |
1527 |
|
|
1528 |
|
srcRegion = getSourceRegion(param, srcWidth, srcHeight); |
1529 |
|
if (image != null) |
1530 |
|
destRegion = new Rectangle (0, 0, image.getWidth(), image.getHeight()); |
1531 |
|
else |
1532 |
|
destRegion = new Rectangle (0, 0, srcWidth, srcHeight); |
1533 |
|
|
1534 |
|
if (param != null) |
1535 |
|
{ |
1536 |
|
Point offset = param.getDestinationOffset(); |
1537 |
|
|
1538 |
|
if (offset.x < 0) |
1539 |
|
{ |
1540 |
|
srcRegion.x -= offset.x; |
1541 |
|
srcRegion.width += offset.x; |
1542 |
|
} |
1543 |
|
if (offset.y < 0) |
1544 |
|
{ |
1545 |
|
srcRegion.y -= offset.y; |
1546 |
|
srcRegion.height += offset.y; |
1547 |
|
} |
1548 |
|
|
1549 |
|
srcRegion.width = srcRegion.width > destRegion.width |
1550 |
|
? destRegion.width : srcRegion.width; |
1551 |
|
srcRegion.height = srcRegion.height > destRegion.height |
1552 |
|
? destRegion.height : srcRegion.height; |
1553 |
|
|
1554 |
|
if (offset.x >= 0) |
1555 |
|
{ |
1556 |
|
destRegion.x += offset.x; |
1557 |
|
destRegion.width -= offset.x; |
1558 |
|
} |
1559 |
|
if (offset.y >= 0) |
1560 |
|
{ |
1561 |
|
destRegion.y += offset.y; |
1562 |
|
destRegion.height -= offset.y; |
1563 |
|
} |
1564 |
|
} |
1565 |
|
|
1566 |
|
if (srcRegion.isEmpty() || destRegion.isEmpty()) |
1567 |
|
throw new IllegalArgumentException ("zero-sized region"); |
1568 |
|
} |
1569 |
|
|
1570 |
|
/** |
1571 |
|
* Return a suitable destination buffered image. If |
1572 |
|
* param.getDestination() is non-null, then it is returned, |
1573 |
|
* otherwise a buffered image is created using |
1574 |
|
* param.getDestinationType() if it is non-null and also in the |
1575 |
|
* given imageTypes collection, or the first element of imageTypes |
1576 |
|
* otherwise. |
1577 |
|
* |
1578 |
|
* @param param image read parameters from which a destination image |
1579 |
|
* or image type is retrieved, or null |
1580 |
|
* @param imageTypes a collection of legal image types |
1581 |
|
* @param width the width of the source image |
1582 |
|
* @param height the height of the source image |
1583 |
|
* |
1584 |
|
* @return a suitable destination buffered image |
1585 |
|
* |
1586 |
|
* @exception IIOException if param.getDestinationType() does not |
1587 |
|
* return an image type in imageTypes |
1588 |
|
* @exception IllegalArgumentException if imageTypes is null or |
1589 |
|
* empty, or if a non-ImageTypeSpecifier object is retrieved from |
1590 |
|
* imageTypes |
1591 |
|
* @exception IllegalArgumentException if the resulting destination |
1592 |
|
* region is empty |
1593 |
|
* @exception IllegalArgumentException if the product of width and |
1594 |
|
* height is greater than Integer.MAX_VALUE |
1595 |
|
*/ |
1596 |
|
protected static BufferedImage getDestination (ImageReadParam param, |
1597 |
|
Iterator imageTypes, |
1598 |
|
int width, |
1599 |
|
int height) |
1600 |
|
throws IIOException |
1601 |
|
{ |
1602 |
|
if (imageTypes == null || !imageTypes.hasNext()) |
1603 |
|
throw new IllegalArgumentException ("imageTypes null or empty"); |
1604 |
|
|
1605 |
|
if (width < 0 || height < 0) |
1606 |
|
throw new IllegalArgumentException ("negative dimension"); |
1607 |
|
|
1608 |
|
// test for overflow |
1609 |
|
if (width * height < Math.min (width, height)) |
1610 |
|
throw new IllegalArgumentException ("width * height > Integer.MAX_VALUE"); |
1611 |
|
|
1612 |
|
BufferedImage dest = null; |
1613 |
|
ImageTypeSpecifier destType = null; |
1614 |
|
|
1615 |
|
if (param != null) |
1616 |
|
{ |
1617 |
|
dest = param.getDestination (); |
1618 |
|
if (dest == null) |
1619 |
|
{ |
1620 |
|
ImageTypeSpecifier type = param.getDestinationType(); |
1621 |
|
if (type != null) |
1622 |
|
{ |
1623 |
|
Iterator it = imageTypes; |
1624 |
|
|
1625 |
|
while (it.hasNext()) |
1626 |
|
{ |
1627 |
|
Object o = it.next (); |
1628 |
|
if (! (o instanceof ImageTypeSpecifier)) |
1629 |
|
throw new IllegalArgumentException ("non-ImageTypeSpecifier object"); |
1630 |
|
|
1631 |
|
ImageTypeSpecifier t = (ImageTypeSpecifier) o; |
1632 |
|
if (t.equals (type)) |
1633 |
|
{ |
1634 |
|
dest = t.createBufferedImage (width, height); |
1635 |
|
break; |
1636 |
|
} |
1637 |
|
if (destType == null) |
1638 |
|
throw new IIOException ("invalid destination type"); |
1639 |
|
|
1640 |
|
} |
1641 |
|
} |
1642 |
|
} |
1643 |
|
} |
1644 |
|
if (dest == null) |
1645 |
|
{ |
1646 |
|
Rectangle srcRegion = new Rectangle (); |
1647 |
|
Rectangle destRegion = new Rectangle (); |
1648 |
|
|
1649 |
|
computeRegions (param, width, height, null, srcRegion, destRegion); |
1650 |
|
|
1651 |
|
if (destRegion.isEmpty()) |
1652 |
|
throw new IllegalArgumentException ("destination region empty"); |
1653 |
|
|
1654 |
|
if (destType == null) |
1655 |
|
{ |
1656 |
|
Object o = imageTypes.next(); |
1657 |
|
if (! (o instanceof ImageTypeSpecifier)) |
1658 |
|
throw new IllegalArgumentException ("non-ImageTypeSpecifier" |
1659 |
|
+ " object"); |
1660 |
|
|
1661 |
|
dest = ((ImageTypeSpecifier) o).createBufferedImage |
1662 |
|
(destRegion.width, destRegion.height); |
1663 |
|
} |
1664 |
|
else |
1665 |
|
dest = destType.createBufferedImage |
1666 |
|
(destRegion.width, destRegion.height); |
1667 |
|
} |
1668 |
|
return dest; |
1669 |
|
} |
1670 |
|
|
1671 |
|
/** |
1672 |
|
* Get the metadata associated with this image. If the reader is |
1673 |
|
* set to ignore metadata or does not support reading metadata, or |
1674 |
|
* if no metadata is available then null is returned. |
1675 |
|
* |
1676 |
|
* This more specific version of getImageMetadata(int) can be used |
1677 |
|
* to restrict metadata retrieval to specific formats and node |
1678 |
|
* names, which can limit the amount of data that needs to be |
1679 |
|
* processed. |
1680 |
|
* |
1681 |
|
* @param imageIndex the frame index |
1682 |
|
* @param formatName the format of metadata requested |
1683 |
|
* @param nodeNames a set of Strings specifiying node names to be |
1684 |
|
* retrieved |
1685 |
|
* |
1686 |
|
* @return a metadata object, or null |
1687 |
|
* |
1688 |
|
* @exception IllegalStateException if input has not been set |
1689 |
|
* @exception IndexOutOfBoundsException if the frame index is |
1690 |
|
* out-of-bounds |
1691 |
|
* @exception IllegalArgumentException if formatName is null |
1692 |
|
* @exception IllegalArgumentException if nodeNames is null |
1693 |
|
* @exception IOException if a read error occurs |
1694 |
|
*/ |
1695 |
|
public IIOMetadata getImageMetadata (int imageIndex, |
1696 |
|
String formatName, |
1697 |
|
Set nodeNames) |
1698 |
|
throws IOException |
1699 |
|
{ |
1700 |
|
if (formatName == null || nodeNames == null) |
1701 |
|
throw new IllegalArgumentException ("null argument"); |
1702 |
|
|
1703 |
|
return getImageMetadata (imageIndex); |
1704 |
|
} |
1705 |
|
|
1706 |
|
/** |
1707 |
|
* Get the index at which the next image will be read. If |
1708 |
|
* seekForwardOnly is true then the returned value will increase |
1709 |
|
* monotonically each time an image frame is read. If |
1710 |
|
* seekForwardOnly is false then the returned value will always be |
1711 |
|
* 0. |
1712 |
|
* |
1713 |
|
* @return the current frame index |
1714 |
|
*/ |
1715 |
|
public int getMinIndex() |
1716 |
|
{ |
1717 |
|
return minIndex; |
1718 |
|
} |
1719 |
|
|
1720 |
|
/** |
1721 |
|
* Get the image type specifier that most closely represents the |
1722 |
|
* internal data representation used by this reader. This value |
1723 |
|
* should be included in the return value of getImageTypes. |
1724 |
|
* |
1725 |
|
* @param imageIndex the frame index |
1726 |
|
* |
1727 |
|
* @return an image type specifier |
1728 |
|
* |
1729 |
|
* @exception IllegalStateException if input has not been set |
1730 |
|
* @exception IndexOutOfBoundsException if the frame index is |
1731 |
|
* out-of-bounds |
1732 |
|
* @exception IOException if a read error occurs |
1733 |
|
*/ |
1734 |
|
public ImageTypeSpecifier getRawImageType (int imageIndex) |
1735 |
|
throws IOException |
1736 |
|
{ |
1737 |
|
return (ImageTypeSpecifier) getImageTypes(imageIndex).next(); |
1738 |
|
} |
1739 |
|
|
1740 |
|
/** |
1741 |
|
* Calculate a source region based on the given source image |
1742 |
|
* dimensions and parameters. Subsampling offsets and a source |
1743 |
|
* region are taken from the given image read parameters and used to |
1744 |
|
* clip the given image dimensions, returning a new rectangular |
1745 |
|
* region as a result. |
1746 |
|
* |
1747 |
|
* @param param image parameters, or null |
1748 |
|
* @param srcWidth the width of the source image |
1749 |
|
* @param srcHeight the height of the source image |
1750 |
|
* |
1751 |
|
* @return a clipped rectangle |
1752 |
|
*/ |
1753 |
|
protected static Rectangle getSourceRegion (ImageReadParam param, |
1754 |
|
int srcWidth, |
1755 |
|
int srcHeight) |
1756 |
|
{ |
1757 |
|
Rectangle clippedRegion = new Rectangle (0, 0, srcWidth, srcHeight); |
1758 |
|
|
1759 |
|
if (param != null) |
1760 |
|
{ |
1761 |
|
Rectangle srcRegion = param.getSourceRegion(); |
1762 |
|
|
1763 |
|
if (srcRegion != null) |
1764 |
|
{ |
1765 |
|
clippedRegion.x = srcRegion.x > clippedRegion.x |
1766 |
|
? srcRegion.x : clippedRegion.x; |
1767 |
|
clippedRegion.y = srcRegion.y > clippedRegion.y |
1768 |
|
? srcRegion.y : clippedRegion.y; |
1769 |
|
clippedRegion.width = srcRegion.width > clippedRegion.width |
1770 |
|
? srcRegion.width : clippedRegion.width; |
1771 |
|
clippedRegion.height = srcRegion.height > clippedRegion.height |
1772 |
|
? srcRegion.height : clippedRegion.height; |
1773 |
|
} |
1774 |
|
|
1775 |
|
int xOffset = param.getSubsamplingXOffset(); |
1776 |
|
|
1777 |
|
clippedRegion.x += xOffset; |
1778 |
|
clippedRegion.width -= xOffset; |
1779 |
|
|
1780 |
|
int yOffset = param.getSubsamplingYOffset(); |
1781 |
|
|
1782 |
|
clippedRegion.y += yOffset; |
1783 |
|
clippedRegion.height -= yOffset; |
1784 |
|
} |
1785 |
|
return clippedRegion; |
1786 |
|
} |
1787 |
|
|
1788 |
|
/** |
1789 |
|
* Get the metadata associated with the image being read. If the |
1790 |
|
* reader is set to ignore metadata or does not support reading |
1791 |
|
* metadata, or if no metadata is available then null is returned. |
1792 |
|
* This method returns metadata associated with the entirety of the |
1793 |
|
* image data, whereas getStreamMetadata() returns metadata |
1794 |
|
* associated with a frame within a multi-image data stream. |
1795 |
|
* |
1796 |
|
* This more specific version of getStreamMetadata() can be used to |
1797 |
|
* restrict metadata retrieval to specific formats and node names, |
1798 |
|
* which can limit the amount of data that needs to be processed. |
1799 |
|
* |
1800 |
|
* @param formatName the format of metadata requested |
1801 |
|
* @param nodeNames a set of Strings specifiying node names to be |
1802 |
|
* retrieved |
1803 |
|
* |
1804 |
|
* @return metadata associated with the image being read, or null |
1805 |
|
* |
1806 |
|
* @exception IllegalArgumentException if formatName is null |
1807 |
|
* @exception IllegalArgumentException if nodeNames is null |
1808 |
|
* @exception IOException if a read error occurs |
1809 |
|
*/ |
1810 |
|
public IIOMetadata getStreamMetadata (String formatName, |
1811 |
|
Set nodeNames) |
1812 |
|
throws IOException |
1813 |
|
{ |
1814 |
|
if (formatName == null || nodeNames == null) |
1815 |
|
throw new IllegalArgumentException ("null argument"); |
1816 |
|
|
1817 |
|
return getStreamMetadata(); |
1818 |
|
} |
1819 |
|
|
1820 |
|
/** |
1821 |
|
* Read the given frame all at once, using default image read |
1822 |
|
* parameters, and return a buffered image. |
1823 |
|
* |
1824 |
|
* The returned image will be formatted according to the |
1825 |
|
* currently-preferred image type specifier. |
1826 |
|
* |
1827 |
|
* Installed read progress listeners, update progress listeners and |
1828 |
|
* warning listeners will be notified of read progress, changes in |
1829 |
|
* sample sets and warnings respectively. |
1830 |
|
* |
1831 |
|
* @param the index of the image frame to read |
1832 |
|
* |
1833 |
|
* @return a buffered image |
1834 |
|
* |
1835 |
|
* @exception IllegalStateException if input has not been set |
1836 |
|
* @exception IndexOutOfBoundsException if the frame index is |
1837 |
|
* out-of-bounds |
1838 |
|
* @exception IOException if a read error occurs |
1839 |
|
*/ |
1840 |
|
public BufferedImage read (int imageIndex) |
1841 |
|
throws IOException |
1842 |
|
{ |
1843 |
|
return read (imageIndex, null); |
1844 |
|
} |
1845 |
|
|
1846 |
|
/** |
1847 |
|
* Read the given frame all at once, using the given image read |
1848 |
|
* parameters, and return an IIOImage. The IIOImage will contain a |
1849 |
|
* buffered image as returned by getDestination. |
1850 |
|
* |
1851 |
|
* Installed read progress listeners, update progress listeners and |
1852 |
|
* warning listeners will be notified of read progress, changes in |
1853 |
|
* sample sets and warnings respectively. |
1854 |
|
* |
1855 |
|
* The source and destination band settings are checked with a call |
1856 |
|
* to checkReadParamBandSettings. |
1857 |
|
* |
1858 |
|
* @param the index of the image frame to read |
1859 |
|
* @param the image read parameters |
1860 |
|
* |
1861 |
|
* @return an IIOImage |
1862 |
|
* |
1863 |
|
* @exception IllegalStateException if input has not been set |
1864 |
|
* @exception IndexOutOfBoundsException if the frame index is |
1865 |
|
* out-of-bounds |
1866 |
|
* @exception IllegalArgumentException if param.getSourceBands() and |
1867 |
|
* param.getDestinationBands() are incompatible |
1868 |
|
* @exception IllegalArgumentException if either the source or |
1869 |
|
* destination image regions are empty |
1870 |
|
* @exception IOException if a read error occurs |
1871 |
|
*/ |
1872 |
|
public IIOImage readAll (int imageIndex, |
1873 |
|
ImageReadParam param) |
1874 |
|
throws IOException |
1875 |
|
{ |
1876 |
|
checkReadParamBandSettings (param, |
1877 |
|
param.getSourceBands().length, |
1878 |
|
param.getDestinationBands().length); |
1879 |
|
|
1880 |
|
List l = new ArrayList (); |
1881 |
|
|
1882 |
|
for (int i = 0; i < getNumThumbnails (imageIndex); i++) |
1883 |
|
l.add (readThumbnail(imageIndex, i)); |
1884 |
|
|
1885 |
|
return new IIOImage (getDestination(param, getImageTypes(imageIndex), |
1886 |
|
getWidth(imageIndex), |
1887 |
|
getHeight(imageIndex)), |
1888 |
|
l, |
1889 |
|
getImageMetadata (imageIndex)); |
1890 |
|
} |
1891 |
|
|
1892 |
|
/** |
1893 |
|
* Read all image frames all at once, using the given image read |
1894 |
|
* parameters iterator, and return an iterator over a collection of |
1895 |
|
* IIOImages. Each IIOImage in the collection will contain a |
1896 |
|
* buffered image as returned by getDestination. |
1897 |
|
* |
1898 |
|
* Installed read progress listeners, update progress listeners and |
1899 |
|
* warning listeners will be notified of read progress, changes in |
1900 |
|
* sample sets and warnings respectively. |
1901 |
|
* |
1902 |
|
* Each set of source and destination band settings are checked with |
1903 |
|
* a call to checkReadParamBandSettings. |
1904 |
|
* |
1905 |
|
* @param an iterator over the image read parameters |
1906 |
|
* |
1907 |
|
* @return an IIOImage |
1908 |
|
* |
1909 |
|
* @exception IllegalStateException if input has not been set |
1910 |
|
* @exception IllegalArgumentException if a non-ImageReadParam is |
1911 |
|
* found in params |
1912 |
|
* @exception IllegalArgumentException if param.getSourceBands() and |
1913 |
|
* param.getDestinationBands() are incompatible |
1914 |
|
* @exception IllegalArgumentException if either the source or |
1915 |
|
* destination image regions are empty |
1916 |
|
* @exception IOException if a read error occurs |
1917 |
|
*/ |
1918 |
|
public Iterator readAll (Iterator params) |
1919 |
|
throws IOException |
1920 |
|
{ |
1921 |
|
List l = new ArrayList (); |
1922 |
|
int index = 0; |
1923 |
|
|
1924 |
|
while (params.hasNext()) |
1925 |
|
{ |
1926 |
|
if (params != null && ! (params instanceof ImageReadParam)) |
1927 |
|
throw new IllegalArgumentException ("non-ImageReadParam found"); |
1928 |
|
|
1929 |
|
l.add (readAll(index++, (ImageReadParam) params.next ())); |
1930 |
|
} |
1931 |
|
|
1932 |
|
return l.iterator(); |
1933 |
|
} |
1934 |
|
|
1935 |
|
/** |
1936 |
|
* Read a rendered image. This is a more general counterpart to |
1937 |
|
* read (int, ImageReadParam). All image data may not be read |
1938 |
|
* before this method returns and so listeners will not necessarily |
1939 |
|
* be notified. |
1940 |
|
* |
1941 |
|
* @param the index of the image frame to read |
1942 |
|
* @param the image read parameters |
1943 |
|
* |
1944 |
|
* @return a rendered image |
1945 |
|
* |
1946 |
|
* @exception IllegalStateException if input is null |
1947 |
|
* @exception IndexOutOfBoundsException if the frame index is |
1948 |
|
* out-of-bounds |
1949 |
|
* @exception IllegalArgumentException if param.getSourceBands() and |
1950 |
|
* param.getDestinationBands() are incompatible |
1951 |
|
* @exception IllegalArgumentException if either the source or |
1952 |
|
* destination image regions are empty |
1953 |
|
* @exception IOException if a read error occurs |
1954 |
|
*/ |
1955 |
|
public RenderedImage readAsRenderedImage (int imageIndex, |
1956 |
|
ImageReadParam param) |
1957 |
|
throws IOException |
1958 |
|
{ |
1959 |
|
return read (imageIndex, param); |
1960 |
|
} |
1961 |
|
|
1962 |
|
/** |
1963 |
|
* Read the given tile into a buffered image. If the tile |
1964 |
|
* coordinates are out-of-bounds an exception is thrown. If the |
1965 |
|
* image is not tiled then the coordinates 0, 0 are expected and the |
1966 |
|
* entire image will be read. |
1967 |
|
* |
1968 |
|
* @param imageIndex the frame index |
1969 |
|
* @param tileX the horizontal tile coordinate |
1970 |
|
* @param tileY the vertical tile coordinate |
1971 |
|
* |
1972 |
|
* @return the contents of the tile as a buffered image |
1973 |
|
* |
1974 |
|
* @exception IllegalStateException if input is null |
1975 |
|
* @exception IndexOutOfBoundsException if the frame index is |
1976 |
|
* out-of-bounds |
1977 |
|
* @exception IllegalArgumentException if the tile coordinates are |
1978 |
|
* out-of-bounds |
1979 |
|
* @exception IOException if a read error occurs |
1980 |
|
*/ |
1981 |
|
public BufferedImage readTile (int imageIndex, int tileX, int tileY) |
1982 |
|
throws IOException |
1983 |
|
{ |
1984 |
|
if (tileX != 0 || tileY != 0) |
1985 |
|
throw new IllegalArgumentException ("tileX not 0 or tileY not 0"); |
1986 |
|
|
1987 |
|
return read (imageIndex); |
1988 |
|
} |
1989 |
|
|
1990 |
|
/** |
1991 |
|
* Read the given tile into a raster containing the raw image data. |
1992 |
|
* If the tile coordinates are out-of-bounds an exception is thrown. |
1993 |
|
* If the image is not tiled then the coordinates 0, 0 are expected |
1994 |
|
* and the entire image will be read. |
1995 |
|
* |
1996 |
|
* @param imageIndex the frame index |
1997 |
|
* @param tileX the horizontal tile coordinate |
1998 |
|
* @param tileY the vertical tile coordinate |
1999 |
|
* |
2000 |
|
* @return the contents of the tile as a raster |
2001 |
|
* |
2002 |
|
* @exception UnsupportedOperationException if rasters are not |
2003 |
|
* supported |
2004 |
|
* @exception IllegalStateException if input is null |
2005 |
|
* @exception IndexOutOfBoundsException if the frame index is |
2006 |
|
* out-of-bounds |
2007 |
|
* @exception IllegalArgumentException if the tile coordinates are |
2008 |
|
* out-of-bounds |
2009 |
|
* @exception IOException if a read error occurs |
2010 |
|
*/ |
2011 |
|
public Raster readTileRaster (int imageIndex, int tileX, int tileY) |
2012 |
|
throws IOException |
2013 |
|
{ |
2014 |
|
if (!canReadRaster()) |
2015 |
|
throw new UnsupportedOperationException ("cannot read rasters"); |
2016 |
|
|
2017 |
|
if (tileX != 0 || tileY != 0) |
2018 |
|
throw new IllegalArgumentException ("tileX not 0 or tileY not 0"); |
2019 |
|
|
2020 |
|
return readRaster (imageIndex, null); |
2021 |
|
} |
2022 |
|
|
2023 |
|
/** |
2024 |
|
* Reset this reader's internal state. |
2025 |
|
*/ |
2026 |
|
public void reset () |
2027 |
|
{ |
2028 |
|
setInput (null, false); |
2029 |
|
setLocale (null); |
2030 |
|
removeAllIIOReadUpdateListeners (); |
2031 |
|
removeAllIIOReadWarningListeners (); |
2032 |
|
removeAllIIOReadProgressListeners (); |
2033 |
|
clearAbortRequest (); |
2034 |
|
} |
2035 |
} |
} |
2036 |
|
|