+++ /dev/null
-/* Copyright (C) 2000, 2002 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., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 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;
-
-import gnu.java.awt.BitMaskExtent;
-import gnu.java.awt.Buffers;
-
-/**
- * @author Rolf W. Rasmussen <rolfwr@ii.uib.no>
- */
-public class SinglePixelPackedSampleModel extends SampleModel
-{
- private int scanlineStride;
- private int[] bitMasks;
- private int[] bitOffsets;
- private int[] sampleSize;;
-
- public SinglePixelPackedSampleModel(int dataType, int w, int h,
- int[] bitMasks)
- {
- this(dataType, w, h, w, bitMasks);
- }
-
- public SinglePixelPackedSampleModel(int dataType, int w, int h,
- int scanlineStride, int[] bitMasks)
- {
- super(dataType, w, h, bitMasks.length);
-
- this.scanlineStride = scanlineStride;
- this.bitMasks = bitMasks;
-
- bitOffsets = new int[numBands];
- sampleSize = new int[numBands];
-
- BitMaskExtent extent = new BitMaskExtent();
- for (int b=0; b<numBands; b++)
- {
- extent.setMask(bitMasks[b]);
- sampleSize[b] = extent.bitWidth;
- bitOffsets[b] = extent.leastSignificantBit;
- }
- }
-
- public int getNumDataElements()
- {
- return 1;
- }
-
- public SampleModel createCompatibleSampleModel(int w, int h)
- {
- /* FIXME: We can avoid recalculation of bit offsets and sample
- sizes here by passing these from the current instance to a
- special private constructor. */
- return new SinglePixelPackedSampleModel(dataType, w, h, bitMasks);
- }
-
- public DataBuffer createDataBuffer()
- {
- // Important: use scanlineStride here, not width!
- int size = scanlineStride*height;
- return Buffers.createBuffer(getDataType(), size);
- }
-
- public int[] getSampleSize()
- {
- return sampleSize;
- }
-
- public int getSampleSize(int band)
- {
- return sampleSize[band];
- }
-
- public int getOffset(int x, int y)
- {
- return scanlineStride*y + x;
- }
-
- public int[] getBitOffsets()
- {
- return bitOffsets;
- }
-
- public int[] getBitMasks()
- {
- return bitMasks;
- }
-
- public int getScanlineStride()
- {
- return scanlineStride;
- }
-
- public SampleModel createSubsetSampleModel(int[] bands)
- {
- // FIXME: Is this the right way to interpret bands?
-
- int numBands = bands.length;
-
- int[] bitMasks = new int[numBands];
-
- for (int b=0; b<numBands; b++)
- bitMasks[b] = this.bitMasks[bands[b]];
-
- return new SinglePixelPackedSampleModel(dataType, width, height,
- scanlineStride, bitMasks);
- }
-
- public Object getDataElements(int x, int y, Object obj,
- DataBuffer data)
- {
- int offset = scanlineStride*y + x + data.getOffset();
-
- return Buffers.getData(data, offset, obj,
- 0, // destination offset,
- 1 // length
- );
- }
-
- public int[] getPixel(int x, int y, int[] iArray, DataBuffer data)
- {
- int offset = scanlineStride*y + x;
- if (iArray == null) iArray = new int[numBands];
- int samples = data.getElem(offset);
-
- for (int b=0; b<numBands; b++)
- iArray[b] = (samples & bitMasks[b]) >>> bitOffsets[b];
-
- return iArray;
- }
-
- public int[] getPixels(int x, int y, int w, int h, int[] iArray,
- DataBuffer data)
- {
- int offset = scanlineStride*y + x;
- if (iArray == null) iArray = new int[numBands*w*h];
- int outOffset = 0;
- for (y=0; y<h; y++)
- {
- int lineOffset = offset;
- for (x=0; x<w; x++)
- {
- int samples = data.getElem(lineOffset++);
- for (int b=0; b<numBands; b++)
- iArray[outOffset++] = (samples & bitMasks[b]) >>> bitOffsets[b];
- }
- offset += scanlineStride;
- }
- return iArray;
- }
-
- public int getSample(int x, int y, int b, DataBuffer data)
- {
- int offset = scanlineStride*y + x;
- int samples = data.getElem(offset);
- return (samples & bitMasks[b]) >>> bitOffsets[b];
- }
-
- public void setDataElements(int x, int y, Object obj, DataBuffer data)
- {
- int offset = scanlineStride*y + x + data.getOffset();
-
- int transferType = getTransferType();
- if (getTransferType() != data.getDataType())
- {
- throw new IllegalArgumentException("transfer type ("+
- getTransferType()+"), "+
- "does not match data "+
- "buffer type (" +
- data.getDataType() +
- ").");
- }
-
- try
- {
- switch (transferType)
- {
- case DataBuffer.TYPE_BYTE:
- {
- DataBufferByte out = (DataBufferByte) data;
- byte[] in = (byte[]) obj;
- out.getData()[offset] = in[0];
- return;
- }
- case DataBuffer.TYPE_USHORT:
- {
- DataBufferUShort out = (DataBufferUShort) data;
- short[] in = (short[]) obj;
- out.getData()[offset] = in[0];
- return;
- }
- case DataBuffer.TYPE_INT:
- {
- DataBufferInt out = (DataBufferInt) data;
- int[] in = (int[]) obj;
- out.getData()[offset] = in[0];
- return;
- }
- // FIXME: Fill in the other possible types.
- default:
- throw new InternalError();
- }
- }
- catch (ArrayIndexOutOfBoundsException aioobe)
- {
- String msg = "While writing data elements" +
- ", x="+x+", y="+y+
- ", width="+width+", height="+height+
- ", scanlineStride="+scanlineStride+
- ", offset="+offset+
- ", data.getSize()="+data.getSize()+
- ", data.getOffset()="+data.getOffset()+
- ": " +
- aioobe;
- throw new ArrayIndexOutOfBoundsException(msg);
- }
- }
-
- public void setPixel(int x, int y, int[] iArray, DataBuffer data)
- {
- int offset = scanlineStride*y + x;
-
- int samples = 0;
- for (int b=0; b<numBands; b++)
- samples |= (iArray[b] << bitOffsets[b]) & bitMasks[b];
-
- data.setElem(offset, samples);
- }
-
- public void setSample(int x, int y, int b, int s, DataBuffer data)
- {
- int offset = scanlineStride*y + x;
- int samples = data.getElem(offset);
- int bitMask = bitMasks[b];
- samples &= ~bitMask;
- samples |= (s << bitOffsets[b]) & bitMask;
- data.setElem(offset, samples);
- }
-}
projects / msp430-gcc.git / blobdiff