From c8875fb97fc03779a5bba09872227b1d08e5d52a Mon Sep 17 00:00:00 2001
From: tromey <tromey@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sat, 16 Jul 2005 00:30:23 +0000
Subject: Initial revision

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@102074 138bc75d-0d04-0410-961f-82ee72b054a4
---
 libjava/classpath/java/awt/image/SampleModel.java | 477 ++++++++++++++++++++++
 1 file changed, 477 insertions(+)
 create mode 100644 libjava/classpath/java/awt/image/SampleModel.java

(limited to 'libjava/classpath/java/awt/image/SampleModel.java')

diff --git a/libjava/classpath/java/awt/image/SampleModel.java b/libjava/classpath/java/awt/image/SampleModel.java
new file mode 100644
index 00000000000..257e30a5bd5
--- /dev/null
+++ b/libjava/classpath/java/awt/image/SampleModel.java
@@ -0,0 +1,477 @@
+/* Copyright (C) 2000, 2001, 2002, 2005  Free Software Foundation
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package java.awt.image;
+
+/**
+ * @author Rolf W. Rasmussen (rolfwr@ii.uib.no)
+ */
+public abstract class SampleModel
+{
+  /** Width of image described. */
+  protected int width;
+  
+  /** Height of image described. */
+  protected int height;
+  
+  /** Number of bands in the image described. */
+  protected int numBands;
+
+  /** 
+   * The DataBuffer type that is used to store the data of the image
+   * described.
+   */
+  protected int dataType;
+
+  public SampleModel(int dataType, int w, int h, int numBands)
+  {
+    if ((w <= 0) || (h <= 0)) 
+      throw new IllegalArgumentException((w <= 0 ? " width<=0" : " width is ok")
+                                         +(h <= 0 ? " height<=0" : " height is ok"));
+	
+    // FIXME: How can an int be greater than Integer.MAX_VALUE?
+    // FIXME: How do we identify an unsupported data type?
+
+    this.dataType = dataType;
+    this.width = w;
+    this.height = h;
+    this.numBands = numBands;  
+  }
+  
+  public final int getWidth()
+  {
+    return width;
+  }
+
+  public final int getHeight()
+  {
+    return height;
+  }
+
+  public final int getNumBands()
+  {
+    return numBands;
+  }
+    
+  public abstract int getNumDataElements();
+  
+  public final int getDataType()
+  {
+    return dataType;
+  }
+
+  public int getTransferType()
+  {
+    // FIXME: Is this a reasonable default implementation?
+    return dataType;
+  }
+
+  public int[] getPixel(int x, int y, int[] iArray, DataBuffer data)
+  {
+    if (iArray == null) iArray = new int[numBands];
+    for (int b=0; b<numBands; b++) iArray[b] = getSample(x, y, b, data);
+    return iArray;
+  }
+  
+  /**
+   *
+   * This method is provided as a faster alternative to getPixel(),
+   * that can be used when there is no need to decode the pixel into
+   * separate sample values.
+   *
+   * @param obj An array to return the pixel data in. If null, an
+   * array of the right type and size will be created.
+   *
+   * @return A single pixel as an array object of a primitive type,
+   * based on the transfer type. Eg. if transfer type is
+   * DataBuffer.TYPE_USHORT, then a short[] object is returned.
+   */
+  public abstract Object getDataElements(int x, int y, Object obj,
+					 DataBuffer data);
+
+    
+  public Object getDataElements(int x, int y, int w, int h, Object obj,
+				DataBuffer data)
+  {
+    int size = w*h;
+    int numDataElements = getNumDataElements();
+    int dataSize = numDataElements*size;
+    
+    if (obj == null)
+      {
+	switch (getTransferType())
+	  {
+	  case DataBuffer.TYPE_BYTE:
+	    obj = new byte[dataSize];
+	    break;
+	  case DataBuffer.TYPE_USHORT:
+	    obj = new short[dataSize];
+	    break;
+	  case DataBuffer.TYPE_INT:
+	    obj = new int[dataSize];
+	    break;
+	  default:
+	    // Seems like the only sensible thing to do.
+	    throw new ClassCastException();
+	  }
+      }
+    Object pixelData = null;
+    int outOffset = 0;
+    for (int yy = y; yy<(y+h); yy++)
+      {
+	for (int xx = x; xx<(x+w); xx++)
+	  {
+	    pixelData = getDataElements(xx, yy, pixelData, data);
+	    System.arraycopy(pixelData, 0, obj, outOffset,
+			     numDataElements);
+	    outOffset += numDataElements;
+	  }
+      }
+    return obj;
+  }
+
+  public abstract void setDataElements(int x, int y, Object obj,
+				       DataBuffer data);
+
+  public void setDataElements(int x, int y, int w, int h,
+			      Object obj, DataBuffer data)
+  {
+    int size = w*h;
+    int numDataElements = getNumDataElements();
+    int dataSize = numDataElements*size;
+    
+    Object pixelData;
+    switch (getTransferType())
+      {
+      case DataBuffer.TYPE_BYTE:
+	pixelData = new byte[numDataElements];
+	break;
+      case DataBuffer.TYPE_USHORT:
+	pixelData = new short[numDataElements];
+	break;
+      case DataBuffer.TYPE_INT:
+	pixelData = new int[numDataElements];
+	break;
+      default:
+	// Seems like the only sensible thing to do.
+	throw new ClassCastException();
+      }
+    int inOffset = 0;
+
+    for (int yy=y; yy<(y+h); yy++)
+      {
+	for (int xx=x; xx<(x+w); xx++)
+	  {
+	    System.arraycopy(obj, inOffset, pixelData, 0,
+			     numDataElements);
+	    setDataElements(xx, yy, pixelData, data);
+	    inOffset += numDataElements;
+	  }
+      }
+  }
+
+  public float[] getPixel(int x, int y, float[] fArray, DataBuffer data)
+  {
+    if (fArray == null) fArray = new float[numBands];
+    
+    for (int b=0; b<numBands; b++)
+      {
+        fArray[b] = getSampleFloat(x, y, b, data);
+      }
+    return fArray;
+  }
+
+  public double[] getPixel(int x, int y, double[] dArray, DataBuffer data) {
+    if (dArray == null) dArray = new double[numBands];
+    for (int b=0; b<numBands; b++)
+      {
+	dArray[b] = getSampleDouble(x, y, b, data);
+      }
+    return dArray;
+  }
+
+  /* FIXME: Should it return a banded or pixel interleaved array of
+     samples? (Assume interleaved.) */
+  public int[] getPixels(int x, int y, int w, int h, int[] iArray,
+			 DataBuffer data)
+  {
+    int size = w*h;
+    int outOffset = 0;
+    int[] pixel = null;
+    if (iArray == null) iArray = new int[w*h*numBands];
+    for (int yy=y; yy<(y+h); yy++)
+      {
+	for (int xx=x; xx<(x+w); xx++)
+	  {
+	    pixel = getPixel(xx, yy, pixel, data);
+	    System.arraycopy(pixel, 0, iArray, outOffset, numBands);
+	    outOffset += numBands;
+	  }
+      }
+    return iArray;
+  }
+
+  /* FIXME: Should it return a banded or pixel interleaved array of
+     samples? (Assume interleaved.) */
+  public float[] getPixels(int x, int y, int w, int h, float[] fArray,
+			   DataBuffer data)
+  {
+    int size = w*h;
+    int outOffset = 0;
+    float[] pixel = null;
+    if (fArray == null) fArray = new float[w*h*numBands];
+    for (int yy=y; yy<(y+h); yy++)
+      {
+	for (int xx=x; xx<(x+w); xx++)
+	  {
+	    pixel = getPixel(xx, yy, pixel, data);
+	    System.arraycopy(pixel, 0, fArray, outOffset, numBands);
+	    outOffset += numBands;
+	  }
+      }
+    return fArray;
+  }
+    
+  /* FIXME: Should it return a banded or pixel interleaved array of
+     samples? (Assume interleaved.) */
+  public double[] getPixels(int x, int y, int w, int h, double[] dArray,
+			    DataBuffer data)
+  {
+    int size = w*h;
+    int outOffset = 0;
+    double[] pixel = null;
+    if (dArray == null) dArray = new double[w*h*numBands];
+    for (int yy=y; yy<(y+h); yy++)
+      {
+	for (int xx=x; xx<(x+w); xx++)
+	  {
+	    pixel = getPixel(xx, yy, pixel, data);
+	    System.arraycopy(pixel, 0, dArray, outOffset, numBands);
+	    outOffset += numBands;
+	  }
+      }
+    return dArray;
+  }
+
+  public abstract int getSample(int x, int y, int b, DataBuffer data);
+
+  public float getSampleFloat(int x, int y, int b, DataBuffer data)
+  {
+    return getSample(x, y, b, data);
+  }
+
+  public double getSampleDouble(int x, int y, int b, DataBuffer data)
+  {
+    return getSampleFloat(x, y, b, data);
+  }
+
+  public int[] getSamples(int x, int y, int w, int h, int b,
+			  int[] iArray, DataBuffer data)
+  {
+    int size = w*h;
+    int outOffset = 0;
+    if (iArray == null) iArray = new int[size];
+    for (int yy=y; yy<(y+h); yy++)
+      {
+	for (int xx=x; xx<(x+w); xx++)
+	  {
+	    iArray[outOffset++] = getSample(xx, yy, b, data);
+	  }
+      }
+    return iArray;
+  }
+
+  public float[] getSamples(int x, int y, int w, int h, int b,
+			    float[] fArray, DataBuffer data)
+  {
+    int size = w*h;
+    int outOffset = 0;
+    if (fArray == null) fArray = new float[size];
+    for (int yy=y; yy<(y+h); yy++)
+      {
+	for (int xx=x; xx<(x+w); xx++)
+	  {
+	    fArray[outOffset++] = getSampleFloat(xx, yy, b, data);
+	  }
+      }
+    return fArray;
+  }
+
+  public double[] getSamples(int x, int y, int w, int h, int b,
+			     double[] dArray, DataBuffer data)
+  {
+    int size = w*h;
+    int outOffset = 0;
+    if (dArray == null) dArray = new double[size];
+    for (int yy=y; yy<(y+h); yy++)
+      {
+	for (int xx=x; xx<(x+w); xx++)
+	  {
+	    dArray[outOffset++] = getSampleDouble(xx, yy, b, data);
+	  }
+      }
+    return dArray;
+  }
+  
+  public void setPixel(int x, int y, int[] iArray, DataBuffer data)
+  {
+    for (int b=0; b<numBands; b++) setSample(x, y, b, iArray[b], data);
+  }
+
+  public void setPixel(int x, int y, float[] fArray, DataBuffer data)
+  {
+    for (int b=0; b<numBands; b++) setSample(x, y, b, fArray[b], data);
+  }
+
+  public void setPixel(int x, int y, double[] dArray, DataBuffer data)
+  {
+    for (int b=0; b<numBands; b++) setSample(x, y, b, dArray[b], data);
+  }
+
+  public void setPixels(int x, int y, int w, int h, int[] iArray,
+			DataBuffer data)
+  {
+    int inOffset = 0;
+    int[] pixel = new int[numBands];
+    for (int yy=y; yy<(y+h); yy++)
+      {
+	for (int xx=x; xx<(x+w); xx++)
+	  {
+	    System.arraycopy(iArray, inOffset, pixel, 0, numBands);
+	    setPixel(xx, yy, pixel, data);
+	    inOffset += numBands;
+	  }
+      }
+  }
+
+  public void setPixels(int x, int y, int w, int h, float[] fArray,
+			DataBuffer data)
+  {
+    int inOffset = 0;
+    float[] pixel = new float[numBands];
+    for (int yy=y; yy<(y+h); yy++)
+      {
+	for (int xx=x; xx<(x+w); xx++)
+	  {
+	    System.arraycopy(fArray, inOffset, pixel, 0, numBands);
+	    setPixel(xx, yy, pixel, data);
+	    inOffset += numBands;
+	  }
+      }
+  }
+
+  public void setPixels(int x, int y, int w, int h, double[] dArray,
+			DataBuffer data)
+  {
+    int inOffset = 0;
+    double[] pixel = new double[numBands];
+    for (int yy=y; yy<(y+h); yy++)
+      {
+	for (int xx=x; xx<(x+w); xx++)
+	  {
+	    System.arraycopy(dArray, inOffset, pixel, 0, numBands);
+	    setPixel(xx, yy, pixel, data);
+	    inOffset += numBands;
+	  }
+      }
+  }
+
+  public abstract void setSample(int x, int y, int b, int s,
+				 DataBuffer data);
+
+  public void setSample(int x, int y, int b, float s,
+			DataBuffer data)
+  {
+    setSample(x, y, b, (int) s, data);
+  }
+
+  public void setSample(int x, int y, int b, double s,
+			DataBuffer data)
+  {
+    setSample(x, y, b, (float) s, data);
+  }
+
+  public void setSamples(int x, int y, int w, int h, int b,
+			 int[] iArray, DataBuffer data)
+  {
+    int size = w*h;
+    int inOffset = 0;
+    for (int yy=y; yy<(y+h); yy++)
+      for (int xx=x; xx<(x+w); xx++)
+	setSample(xx, yy, b, iArray[inOffset++], data);
+  }
+
+  public void setSamples(int x, int y, int w, int h, int b,
+			 float[] fArray, DataBuffer data)
+  {
+    int size = w*h;
+    int inOffset = 0;
+    for (int yy=y; yy<(y+h); yy++)
+      for (int xx=x; xx<(x+w); xx++)
+	setSample(xx, yy, b, fArray[inOffset++], data);
+
+    }
+
+    public void setSamples(int x, int y, int w, int h, int b,
+			   double[] dArray, DataBuffer data) {
+      int size = w*h;
+      int inOffset = 0;
+      for (int yy=y; yy<(y+h); yy++)
+	for (int xx=x; xx<(x+w); xx++)
+	  setSample(xx, yy, b, dArray[inOffset++], data);
+    }
+
+    public abstract SampleModel createCompatibleSampleModel(int w, int h);
+
+    /**
+     * Return a SampleModel with a subset of the bands in this model.
+     * 
+     * Selects bands.length bands from this sample model.  The bands chosen
+     * are specified in the indices of bands[].  This also permits permuting
+     * the bands as well as taking a subset.  Thus, giving an array with
+     * 1, 2, 3, ..., numbands, will give an identical sample model.
+     * 
+     * @param bands Array with band indices to include.
+     * @return A new sample model
+     */
+    public abstract SampleModel createSubsetSampleModel(int[] bands);
+
+    public abstract DataBuffer createDataBuffer();
+
+    public abstract int[] getSampleSize();
+
+    public abstract int getSampleSize(int band);
+}
-- 
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