author | prr |
Sat, 19 Sep 2015 15:45:59 -0700 | |
changeset 32865 | f9cb6e427f9e |
parent 30948 | 0a0972d3b58d |
child 37544 | d07afcfa7730 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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* Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
2 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
|
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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||
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package sun.awt.image; |
|
27 |
import java.awt.image.Raster; |
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import java.awt.image.WritableRaster; |
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import java.awt.image.RasterFormatException; |
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import java.awt.image.SampleModel; |
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import java.awt.image.SinglePixelPackedSampleModel; |
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import java.awt.image.DataBuffer; |
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import java.awt.image.DataBufferInt; |
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import java.awt.Rectangle; |
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import java.awt.Point; |
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||
37 |
/** |
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38 |
* This class defines a Raster with pixels consisting of one or more 32-bit |
|
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* data elements stored in close proximity to each other in a integer array. |
|
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* The bit precision per data element is that |
|
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* of the data type (that is, the bit precision for this raster is 32). |
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* There is only one pixel stride and one scanline stride for all |
|
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* bands. For a given pixel, all samples fit in N data elements and these |
|
44 |
* N data elements hold samples for only one pixel. This type of Raster |
|
45 |
* can be used with a PackedColorModel. |
|
46 |
* <p> |
|
47 |
* For example, if there is only one data element per pixel, a |
|
48 |
* SinglePixelPackedSampleModel can be used to represent multiple |
|
49 |
* bands with a PackedColorModel (including a DirectColorModel) for |
|
50 |
* color interpretation. |
|
51 |
* |
|
52 |
*/ |
|
53 |
public class IntegerComponentRaster extends SunWritableRaster { |
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54 |
||
55 |
static final int TYPE_CUSTOM = 0; |
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56 |
static final int TYPE_BYTE_SAMPLES = 1; |
|
57 |
static final int TYPE_USHORT_SAMPLES = 2; |
|
58 |
static final int TYPE_INT_SAMPLES = 3; |
|
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static final int TYPE_BYTE_BANDED_SAMPLES = 4; |
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static final int TYPE_USHORT_BANDED_SAMPLES = 5; |
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static final int TYPE_INT_BANDED_SAMPLES = 6; |
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static final int TYPE_BYTE_PACKED_SAMPLES = 7; |
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static final int TYPE_USHORT_PACKED_SAMPLES = 8; |
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static final int TYPE_INT_PACKED_SAMPLES = 9; |
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static final int TYPE_INT_8BIT_SAMPLES = 10; |
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static final int TYPE_BYTE_BINARY_SAMPLES = 11; |
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/** private band offset for use by native code */ |
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protected int bandOffset; |
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/** Data offsets for each band of image data. */ |
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protected int[] dataOffsets; |
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/** Scanline stride of the image data contained in this Raster. */ |
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protected int scanlineStride; |
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/** Pixel stride of the image data contained in this Raster. */ |
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protected int pixelStride; |
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/** The image data array. */ |
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protected int[] data; |
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/** The number of data elements required to store a pixel. */ |
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protected int numDataElems; |
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85 |
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int type; |
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87 |
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/** A cached copy of minX + width for use in bounds checks. */ |
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private int maxX; |
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/** A cached copy of minY + height for use in bounds checks. */ |
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private int maxY; |
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93 |
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private static native void initIDs(); |
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static { |
96 |
/* ensure that the necessary native libraries are loaded */ |
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NativeLibLoader.loadLibraries(); |
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initIDs(); |
|
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} |
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100 |
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101 |
/** |
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* Constructs a IntegerComponentRaster with the given SampleModel. |
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* The Raster's upper left corner is origin and it is the same |
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* size as the SampleModel. A DataBuffer large enough to describe the |
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* Raster is automatically created. SampleModel must be of type |
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* SinglePixelPackedSampleModel. |
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* @param sampleModel The SampleModel that specifies the layout. |
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* @param origin The Point that specified the origin. |
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109 |
*/ |
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110 |
public IntegerComponentRaster(SampleModel sampleModel, |
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Point origin) { |
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this(sampleModel, |
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sampleModel.createDataBuffer(), |
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new Rectangle(origin.x, |
|
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origin.y, |
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sampleModel.getWidth(), |
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sampleModel.getHeight()), |
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origin, |
|
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null); |
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120 |
} |
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121 |
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122 |
/** |
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123 |
* Constructs a IntegerComponentRaster with the given SampleModel |
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* and DataBuffer. The Raster's upper left corner is origin and |
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125 |
* it is the same sizes the SampleModel. The DataBuffer is not |
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126 |
* initialized and must be a DataBufferInt compatible with SampleModel. |
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127 |
* SampleModel must be of type SinglePixelPackedSampleModel. |
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128 |
* @param sampleModel The SampleModel that specifies the layout. |
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* @param dataBuffer The DataBufferInt that contains the image data. |
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* @param origin The Point that specifies the origin. |
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131 |
*/ |
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public IntegerComponentRaster(SampleModel sampleModel, |
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DataBuffer dataBuffer, |
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Point origin) { |
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this(sampleModel, |
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dataBuffer, |
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new Rectangle(origin.x, |
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origin.y, |
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sampleModel.getWidth(), |
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sampleModel.getHeight()), |
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origin, |
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null); |
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} |
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145 |
/** |
|
146 |
* Constructs a IntegerComponentRaster with the given SampleModel, |
|
147 |
* DataBuffer, and parent. DataBuffer must be a DataBufferInt and |
|
148 |
* SampleModel must be of type SinglePixelPackedSampleModel. |
|
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* When translated into the base Raster's |
|
150 |
* coordinate system, aRegion must be contained by the base Raster. |
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* Origin is the coodinate in the new Raster's coordinate system of |
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152 |
* the origin of the base Raster. (The base Raster is the Raster's |
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* ancestor which has no parent.) |
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154 |
* |
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* Note that this constructor should generally be called by other |
|
156 |
* constructors or create methods, it should not be used directly. |
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157 |
* @param sampleModel The SampleModel that specifies the layout. |
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* @param dataBuffer The DataBufferInt that contains the image data. |
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* @param aRegion The Rectangle that specifies the image area. |
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* @param origin The Point that specifies the origin. |
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* @param parent The parent (if any) of this raster. |
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162 |
*/ |
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public IntegerComponentRaster(SampleModel sampleModel, |
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DataBuffer dataBuffer, |
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Rectangle aRegion, |
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Point origin, |
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IntegerComponentRaster parent){ |
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super(sampleModel,dataBuffer,aRegion,origin,parent); |
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this.maxX = minX + width; |
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this.maxY = minY + height; |
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if (!(dataBuffer instanceof DataBufferInt)) { |
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172 |
throw new RasterFormatException("IntegerComponentRasters must have" + |
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"integer DataBuffers"); |
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174 |
} |
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175 |
DataBufferInt dbi = (DataBufferInt)dataBuffer; |
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176 |
if (dbi.getNumBanks() != 1) { |
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177 |
throw new |
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RasterFormatException("DataBuffer for IntegerComponentRasters"+ |
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" must only have 1 bank."); |
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180 |
} |
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this.data = stealData(dbi, 0); |
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if (sampleModel instanceof SinglePixelPackedSampleModel) { |
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184 |
SinglePixelPackedSampleModel sppsm = |
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185 |
(SinglePixelPackedSampleModel)sampleModel; |
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186 |
int[] boffsets = sppsm.getBitOffsets(); |
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187 |
boolean notByteBoundary = false; |
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188 |
for (int i=1; i < boffsets.length; i++) { |
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189 |
if ((boffsets[i]%8) != 0) { |
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notByteBoundary = true; |
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} |
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} |
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this.type = (notByteBoundary |
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? IntegerComponentRaster.TYPE_INT_PACKED_SAMPLES |
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: IntegerComponentRaster.TYPE_INT_8BIT_SAMPLES); |
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this.scanlineStride = sppsm.getScanlineStride(); |
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this.pixelStride = 1; |
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this.dataOffsets = new int[1]; |
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this.dataOffsets[0] = dbi.getOffset(); |
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this.bandOffset = this.dataOffsets[0]; |
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int xOffset = aRegion.x - origin.x; |
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int yOffset = aRegion.y - origin.y; |
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dataOffsets[0] += xOffset+yOffset*scanlineStride; |
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this.numDataElems = sppsm.getNumDataElements(); |
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206 |
} else { |
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207 |
throw new RasterFormatException("IntegerComponentRasters must have"+ |
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208 |
" SinglePixelPackedSampleModel"); |
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209 |
} |
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verify(); |
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} |
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214 |
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/** |
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* Returns a copy of the data offsets array. For each band the data offset |
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* is the index into the band's data array, of the first sample of the |
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* band. |
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*/ |
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220 |
public int[] getDataOffsets() { |
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return dataOffsets.clone(); |
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} |
223 |
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224 |
/** |
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* Returns data offset for the specified band. The data offset |
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* is the index into the data array in which the first sample |
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227 |
* of the first scanline is stored. |
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228 |
*/ |
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229 |
public int getDataOffset(int band) { |
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return dataOffsets[band]; |
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} |
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233 |
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/** |
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235 |
* Returns the scanline stride -- the number of data array elements between |
|
236 |
* a given sample and the sample in the same column of the next row. |
|
237 |
*/ |
|
238 |
public int getScanlineStride() { |
|
239 |
return scanlineStride; |
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240 |
} |
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242 |
/** |
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243 |
* Returns pixel stride -- the number of data array elements between two |
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244 |
* samples for the same band on the same scanline. |
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245 |
*/ |
|
246 |
public int getPixelStride() { |
|
247 |
return pixelStride; |
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248 |
} |
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249 |
||
250 |
/** |
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251 |
* Returns a reference to the data array. |
|
252 |
*/ |
|
253 |
public int[] getDataStorage() { |
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254 |
return data; |
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255 |
} |
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256 |
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257 |
/** |
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258 |
* Returns the data elements for all bands at the specified |
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259 |
* location. |
|
260 |
* An ArrayIndexOutOfBounds exception will be thrown at runtime |
|
261 |
* if the pixel coordinate is out of bounds. |
|
262 |
* A ClassCastException will be thrown if the input object is non null |
|
263 |
* and references anything other than an array of transferType. |
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* @param x The X coordinate of the pixel location. |
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* @param y The Y coordinate of the pixel location. |
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* @param obj An object reference to an array of type defined by |
2 | 267 |
* getTransferType() and length getNumDataElements(). |
268 |
* If null an array of appropriate type and size will be |
|
269 |
* allocated. |
|
270 |
* @return An object reference to an array of type defined by |
|
271 |
* getTransferType() with the request pixel data. |
|
272 |
*/ |
|
273 |
public Object getDataElements(int x, int y, Object obj) { |
|
274 |
if ((x < this.minX) || (y < this.minY) || |
|
275 |
(x >= this.maxX) || (y >= this.maxY)) { |
|
276 |
throw new ArrayIndexOutOfBoundsException |
|
277 |
("Coordinate out of bounds!"); |
|
278 |
} |
|
279 |
int outData[]; |
|
280 |
if (obj == null) { |
|
281 |
outData = new int[numDataElements]; |
|
282 |
} else { |
|
283 |
outData = (int[])obj; |
|
284 |
} |
|
285 |
int off = (y-minY)*scanlineStride + |
|
286 |
(x-minX)*pixelStride; |
|
287 |
for (int band = 0; band < numDataElements; band++) { |
|
288 |
outData[band] = data[dataOffsets[band] + off]; |
|
289 |
} |
|
290 |
||
291 |
return outData; |
|
292 |
} |
|
293 |
||
294 |
||
295 |
/** |
|
296 |
* Returns an array of data elements from the specified rectangular |
|
297 |
* region. |
|
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* An ArrayIndexOutOfBounds exception will be thrown at runtime |
|
299 |
* if the pixel coordinates are out of bounds. |
|
300 |
* A ClassCastException will be thrown if the input object is non null |
|
301 |
* and references anything other than an array of transferType. |
|
302 |
<pre> |
|
303 |
* int[] bandData = (int[])raster.getDataElements(x, y, w, h, null); |
|
304 |
* int numDataElements = raster.getNumDataElements(); |
|
305 |
* int[] pixel = new int[numDataElements]; |
|
306 |
* // To find a data element at location (x2, y2) |
|
307 |
* System.arraycopy(bandData, ((y2-y)*w + (x2-x))*numDataElements, |
|
308 |
* pixel, 0, numDataElements); |
|
309 |
* </pre> |
|
310 |
* @param x The X coordinate of the upper left pixel location. |
|
311 |
* @param y The Y coordinate of the upper left pixel location. |
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* @param w Width of the pixel rectangle. |
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* @param h Height of the pixel rectangle. |
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* @param obj An object reference to an array of type defined by |
2 | 315 |
* getTransferType() and length w*h*getNumDataElements(). |
316 |
* If null an array of appropriate type and size will be |
|
317 |
* allocated. |
|
318 |
* @return An object reference to an array of type defined by |
|
319 |
* getTransferType() with the request pixel data. |
|
320 |
*/ |
|
321 |
public Object getDataElements(int x, int y, int w, int h, Object obj) { |
|
322 |
if ((x < this.minX) || (y < this.minY) || |
|
323 |
(x + w > this.maxX) || (y + h > this.maxY)) { |
|
324 |
throw new ArrayIndexOutOfBoundsException |
|
325 |
("Coordinate out of bounds!"); |
|
326 |
} |
|
327 |
int outData[]; |
|
328 |
if (obj instanceof int[]) { |
|
329 |
outData = (int[])obj; |
|
330 |
} else { |
|
331 |
outData = new int[numDataElements*w*h]; |
|
332 |
} |
|
333 |
int yoff = (y-minY)*scanlineStride + |
|
334 |
(x-minX)*pixelStride; |
|
335 |
int xoff; |
|
336 |
int off = 0; |
|
337 |
int xstart; |
|
338 |
int ystart; |
|
339 |
||
340 |
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) { |
|
341 |
xoff = yoff; |
|
342 |
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) { |
|
343 |
for (int c = 0; c < numDataElements; c++) { |
|
344 |
outData[off++] = data[dataOffsets[c] + xoff]; |
|
345 |
} |
|
346 |
} |
|
347 |
} |
|
348 |
||
349 |
return outData; |
|
350 |
} |
|
351 |
||
352 |
||
353 |
/** |
|
354 |
* Stores the data elements for all bands at the specified location. |
|
355 |
* An ArrayIndexOutOfBounds exception will be thrown at runtime |
|
356 |
* if the pixel coordinate is out of bounds. |
|
357 |
* A ClassCastException will be thrown if the input object is non null |
|
358 |
* and references anything other than an array of transferType. |
|
359 |
* @param x The X coordinate of the pixel location. |
|
360 |
* @param y The Y coordinate of the pixel location. |
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361 |
* @param obj An object reference to an array of type defined by |
2 | 362 |
* getTransferType() and length getNumDataElements() |
363 |
* containing the pixel data to place at x,y. |
|
364 |
*/ |
|
365 |
public void setDataElements(int x, int y, Object obj) { |
|
366 |
if ((x < this.minX) || (y < this.minY) || |
|
367 |
(x >= this.maxX) || (y >= this.maxY)) { |
|
368 |
throw new ArrayIndexOutOfBoundsException |
|
369 |
("Coordinate out of bounds!"); |
|
370 |
} |
|
371 |
int inData[] = (int[])obj; |
|
372 |
||
373 |
int off = (y-minY)*scanlineStride + |
|
374 |
(x-minX)*pixelStride; |
|
375 |
||
376 |
for (int i = 0; i < numDataElements; i++) { |
|
377 |
data[dataOffsets[i] + off] = inData[i]; |
|
378 |
} |
|
379 |
||
380 |
markDirty(); |
|
381 |
} |
|
382 |
||
383 |
||
384 |
/** |
|
385 |
* Stores the Raster data at the specified location. |
|
386 |
* The transferType of the inputRaster must match this raster. |
|
387 |
* An ArrayIndexOutOfBoundsException will be thrown at runtime |
|
388 |
* if the pixel coordinates are out of bounds. |
|
389 |
* @param x The X coordinate of the pixel location. |
|
390 |
* @param y The Y coordinate of the pixel location. |
|
391 |
* @param inRaster Raster of data to place at x,y location. |
|
392 |
*/ |
|
393 |
public void setDataElements(int x, int y, Raster inRaster) { |
|
394 |
int dstOffX = x + inRaster.getMinX(); |
|
395 |
int dstOffY = y + inRaster.getMinY(); |
|
396 |
int width = inRaster.getWidth(); |
|
397 |
int height = inRaster.getHeight(); |
|
398 |
if ((dstOffX < this.minX) || (dstOffY < this.minY) || |
|
399 |
(dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) { |
|
400 |
throw new ArrayIndexOutOfBoundsException |
|
401 |
("Coordinate out of bounds!"); |
|
402 |
} |
|
403 |
setDataElements(dstOffX, dstOffY, width, height, inRaster); |
|
404 |
} |
|
405 |
||
406 |
/** |
|
407 |
* Stores the Raster data at the specified location. |
|
408 |
* @param dstX The absolute X coordinate of the destination pixel |
|
409 |
* that will receive a copy of the upper-left pixel of the |
|
410 |
* inRaster |
|
411 |
* @param dstY The absolute Y coordinate of the destination pixel |
|
412 |
* that will receive a copy of the upper-left pixel of the |
|
413 |
* inRaster |
|
414 |
* @param width The number of pixels to store horizontally |
|
415 |
* @param height The number of pixels to store vertically |
|
416 |
* @param inRaster Raster of data to place at x,y location. |
|
417 |
*/ |
|
418 |
private void setDataElements(int dstX, int dstY, |
|
419 |
int width, int height, |
|
420 |
Raster inRaster) { |
|
421 |
// Assume bounds checking has been performed previously |
|
422 |
if (width <= 0 || height <= 0) { |
|
423 |
return; |
|
424 |
} |
|
425 |
||
426 |
// Write inRaster (minX, minY) to (dstX, dstY) |
|
427 |
||
428 |
int srcOffX = inRaster.getMinX(); |
|
429 |
int srcOffY = inRaster.getMinY(); |
|
430 |
int tdata[] = null; |
|
431 |
||
432 |
if (inRaster instanceof IntegerComponentRaster && |
|
433 |
(pixelStride == 1) && (numDataElements == 1)) { |
|
434 |
IntegerComponentRaster ict = (IntegerComponentRaster) inRaster; |
|
435 |
if (ict.getNumDataElements() != 1) { |
|
436 |
throw new ArrayIndexOutOfBoundsException("Number of bands"+ |
|
437 |
" does not match"); |
|
438 |
} |
|
439 |
||
440 |
// Extract the raster parameters |
|
441 |
tdata = ict.getDataStorage(); |
|
442 |
int tss = ict.getScanlineStride(); |
|
443 |
int toff = ict.getDataOffset(0); |
|
444 |
||
445 |
int srcOffset = toff; |
|
446 |
||
447 |
int dstOffset = dataOffsets[0]+(dstY-minY)*scanlineStride+ |
|
448 |
(dstX-minX); |
|
449 |
||
450 |
||
451 |
// Fastest case. We can copy scanlines |
|
452 |
if (ict.getPixelStride() == pixelStride) { |
|
453 |
width *= pixelStride; |
|
454 |
||
455 |
// Loop through all of the scanlines and copy the data |
|
456 |
for (int startY=0; startY < height; startY++) { |
|
457 |
System.arraycopy(tdata, srcOffset, data, dstOffset, width); |
|
458 |
srcOffset += tss; |
|
459 |
dstOffset += scanlineStride; |
|
460 |
} |
|
461 |
markDirty(); |
|
462 |
return; |
|
463 |
} |
|
464 |
} |
|
465 |
||
466 |
Object odata = null; |
|
467 |
for (int startY=0; startY < height; startY++) { |
|
468 |
odata = inRaster.getDataElements(srcOffX, srcOffY+startY, |
|
469 |
width, 1, odata); |
|
470 |
setDataElements(dstX, dstY+startY, |
|
471 |
width, 1, odata); |
|
472 |
} |
|
473 |
} |
|
474 |
||
475 |
/** |
|
476 |
* Stores an array of data elements into the specified rectangular |
|
477 |
* region. |
|
478 |
* An ArrayIndexOutOfBounds exception will be thrown at runtime |
|
479 |
* if the pixel coordinates are out of bounds. |
|
480 |
* A ClassCastException will be thrown if the input object is non null |
|
481 |
* and references anything other than an array of transferType. |
|
482 |
* The data elements in the |
|
483 |
* data array are assumed to be packed. That is, a data element |
|
484 |
* for the nth band at location (x2, y2) would be found at: |
|
485 |
* <pre> |
|
486 |
* inData[((y2-y)*w + (x2-x))*numDataElements + n] |
|
487 |
* </pre> |
|
488 |
* @param x The X coordinate of the upper left pixel location. |
|
489 |
* @param y The Y coordinate of the upper left pixel location. |
|
490 |
* @param w Width of the pixel rectangle. |
|
491 |
* @param h Height of the pixel rectangle. |
|
30948
0a0972d3b58d
6587235: Incorrect javadoc: "no parameter" in 2d source code
serb
parents:
25859
diff
changeset
|
492 |
* @param obj An object reference to an array of type defined by |
2 | 493 |
* getTransferType() and length w*h*getNumDataElements() |
494 |
* containing the pixel data to place between x,y and |
|
495 |
* x+h, y+h. |
|
496 |
*/ |
|
497 |
public void setDataElements(int x, int y, int w, int h, Object obj) { |
|
498 |
if ((x < this.minX) || (y < this.minY) || |
|
499 |
(x + w > this.maxX) || (y + h > this.maxY)) { |
|
500 |
throw new ArrayIndexOutOfBoundsException |
|
501 |
("Coordinate out of bounds!"); |
|
502 |
} |
|
503 |
int inData[] = (int[])obj; |
|
504 |
||
505 |
int yoff = (y-minY)*scanlineStride + |
|
506 |
(x-minX)*pixelStride; |
|
507 |
int xoff; |
|
508 |
int off = 0; |
|
509 |
int xstart; |
|
510 |
int ystart; |
|
511 |
||
512 |
for (ystart=0; ystart < h; ystart++, yoff += scanlineStride) { |
|
513 |
xoff = yoff; |
|
514 |
for (xstart=0; xstart < w; xstart++, xoff += pixelStride) { |
|
515 |
for (int c = 0; c < numDataElements; c++) { |
|
516 |
data[dataOffsets[c] + xoff] = inData[off++]; |
|
517 |
} |
|
518 |
} |
|
519 |
} |
|
520 |
||
521 |
markDirty(); |
|
522 |
} |
|
523 |
||
524 |
||
525 |
/** |
|
526 |
* Creates a subraster given a region of the raster. The x and y |
|
527 |
* coordinates specify the horizontal and vertical offsets |
|
528 |
* from the upper-left corner of this raster to the upper-left corner |
|
529 |
* of the subraster. A subset of the bands of the parent Raster may |
|
530 |
* be specified. If this is null, then all the bands are present in the |
|
531 |
* subRaster. A translation to the subRaster may also be specified. |
|
532 |
* Note that the subraster will reference the same |
|
533 |
* DataBuffer as the parent raster, but using different offsets. |
|
534 |
* @param x X offset. |
|
535 |
* @param y Y offset. |
|
536 |
* @param width Width (in pixels) of the subraster. |
|
537 |
* @param height Height (in pixels) of the subraster. |
|
538 |
* @param x0 Translated X origin of the subraster. |
|
539 |
* @param y0 Translated Y origin of the subraster. |
|
540 |
* @param bandList Array of band indices. |
|
541 |
* @exception RasterFormatException |
|
542 |
* if the specified bounding box is outside of the parent raster. |
|
543 |
*/ |
|
544 |
public WritableRaster createWritableChild (int x, int y, |
|
545 |
int width, int height, |
|
546 |
int x0, int y0, |
|
547 |
int bandList[]) { |
|
548 |
if (x < this.minX) { |
|
549 |
throw new RasterFormatException("x lies outside raster"); |
|
550 |
} |
|
551 |
if (y < this.minY) { |
|
552 |
throw new RasterFormatException("y lies outside raster"); |
|
553 |
} |
|
554 |
if ((x+width < x) || (x+width > this.minX + this.width)) { |
|
555 |
throw new RasterFormatException("(x + width) is outside raster"); |
|
556 |
} |
|
557 |
if ((y+height < y) || (y+height > this.minY + this.height)) { |
|
558 |
throw new RasterFormatException("(y + height) is outside raster"); |
|
559 |
} |
|
560 |
||
561 |
SampleModel sm; |
|
562 |
||
563 |
if (bandList != null) |
|
564 |
sm = sampleModel.createSubsetSampleModel(bandList); |
|
565 |
else |
|
566 |
sm = sampleModel; |
|
567 |
||
568 |
int deltaX = x0 - x; |
|
569 |
int deltaY = y0 - y; |
|
570 |
||
571 |
return new IntegerComponentRaster(sm, |
|
572 |
dataBuffer, |
|
573 |
new Rectangle(x0,y0,width,height), |
|
574 |
new Point(sampleModelTranslateX+deltaX, |
|
575 |
sampleModelTranslateY+deltaY), |
|
576 |
this); |
|
577 |
} |
|
578 |
||
579 |
||
580 |
/** |
|
581 |
* Creates a subraster given a region of the raster. The x and y |
|
582 |
* coordinates specify the horizontal and vertical offsets |
|
583 |
* from the upper-left corner of this raster to the upper-left corner |
|
584 |
* of the subraster. A subset of the bands of the parent raster may |
|
585 |
* be specified. If this is null, then all the bands are present in the |
|
586 |
* subRaster. Note that the subraster will reference the same |
|
587 |
* DataBuffer as the parent raster, but using different offsets. |
|
588 |
* @param x X offset. |
|
589 |
* @param y Y offset. |
|
590 |
* @param width Width (in pixels) of the subraster. |
|
591 |
* @param height Height (in pixels) of the subraster. |
|
592 |
* @param x0 Translated X origin of the subRaster. |
|
593 |
* @param y0 Translated Y origin of the subRaster. |
|
594 |
* @param bandList Array of band indices. |
|
595 |
* @exception RasterFormatException |
|
596 |
* if the specified bounding box is outside of the parent raster. |
|
597 |
*/ |
|
598 |
public Raster createChild (int x, int y, |
|
599 |
int width, int height, |
|
600 |
int x0, int y0, |
|
601 |
int bandList[]) { |
|
602 |
return createWritableChild(x, y, width, height, x0, y0, bandList); |
|
603 |
} |
|
604 |
||
605 |
||
606 |
/** |
|
607 |
* Creates a raster with the same band layout but using a different |
|
608 |
* width and height, and with new zeroed data arrays. |
|
609 |
*/ |
|
610 |
public WritableRaster createCompatibleWritableRaster(int w, int h) { |
|
611 |
if (w <= 0 || h <=0) { |
|
612 |
throw new RasterFormatException("negative "+ |
|
613 |
((w <= 0) ? "width" : "height")); |
|
614 |
} |
|
615 |
||
616 |
SampleModel sm = sampleModel.createCompatibleSampleModel(w,h); |
|
617 |
||
618 |
return new IntegerComponentRaster(sm, new Point(0,0)); |
|
619 |
} |
|
620 |
||
621 |
/** |
|
622 |
* Creates a raster with the same data layout and the same |
|
623 |
* width and height, and with new zeroed data arrays. If |
|
624 |
* the raster is a subraster, this will call |
|
625 |
* createCompatibleRaster(width, height). |
|
626 |
*/ |
|
627 |
public WritableRaster createCompatibleWritableRaster() { |
|
628 |
return createCompatibleWritableRaster(width,height); |
|
629 |
} |
|
630 |
||
631 |
/** |
|
16868 | 632 |
* Verify that the layout parameters are consistent with the data. |
633 |
* |
|
634 |
* The method verifies whether scanline stride and pixel stride do not |
|
635 |
* cause an integer overflow during calculation of a position of the pixel |
|
636 |
* in data buffer. It also verifies whether the data buffer has enough data |
|
637 |
* to correspond the raster layout attributes. |
|
638 |
* |
|
639 |
* @throws RasterFormatException if an integer overflow is detected, |
|
640 |
* or if data buffer has not enough capacity. |
|
2 | 641 |
*/ |
16868 | 642 |
protected final void verify() { |
643 |
/* Need to re-verify the dimensions since a sample model may be |
|
644 |
* specified to the constructor |
|
645 |
*/ |
|
646 |
if (width <= 0 || height <= 0 || |
|
647 |
height > (Integer.MAX_VALUE / width)) |
|
648 |
{ |
|
649 |
throw new RasterFormatException("Invalid raster dimension"); |
|
650 |
} |
|
651 |
||
2 | 652 |
if (dataOffsets[0] < 0) { |
653 |
throw new RasterFormatException("Data offset ("+dataOffsets[0]+ |
|
654 |
") must be >= 0"); |
|
655 |
} |
|
656 |
||
25090
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
657 |
if ((long)minX - sampleModelTranslateX < 0 || |
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
658 |
(long)minY - sampleModelTranslateY < 0) { |
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
659 |
|
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
660 |
throw new RasterFormatException("Incorrect origin/translate: (" + |
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
661 |
minX + ", " + minY + ") / (" + |
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
662 |
sampleModelTranslateX + ", " + sampleModelTranslateY + ")"); |
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
663 |
} |
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
664 |
|
16868 | 665 |
// we can be sure that width and height are greater than 0 |
666 |
if (scanlineStride < 0 || |
|
25090
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
667 |
scanlineStride > (Integer.MAX_VALUE / height)) |
16868 | 668 |
{ |
669 |
// integer overflow |
|
670 |
throw new RasterFormatException("Incorrect scanline stride: " |
|
671 |
+ scanlineStride); |
|
672 |
} |
|
25090
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
673 |
|
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
674 |
if (height > 1 || minY - sampleModelTranslateY > 0) { |
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
675 |
// buffer should contain at least one scanline |
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
676 |
if (scanlineStride > data.length) { |
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
677 |
throw new RasterFormatException("Incorrect scanline stride: " |
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
678 |
+ scanlineStride); |
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
679 |
} |
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
680 |
} |
83a78ff886e6
8038000: java.awt.image.RasterFormatException: Incorrect scanline stride
anashaty
parents:
22584
diff
changeset
|
681 |
|
16868 | 682 |
int lastScanOffset = (height - 1) * scanlineStride; |
683 |
||
684 |
if (pixelStride < 0 || |
|
18246 | 685 |
pixelStride > (Integer.MAX_VALUE / width) || |
686 |
pixelStride > data.length) |
|
16868 | 687 |
{ |
688 |
// integer overflow |
|
689 |
throw new RasterFormatException("Incorrect pixel stride: " |
|
690 |
+ pixelStride); |
|
691 |
} |
|
692 |
int lastPixelOffset = (width - 1) * pixelStride; |
|
693 |
||
694 |
if (lastPixelOffset > (Integer.MAX_VALUE - lastScanOffset)) { |
|
695 |
// integer overflow |
|
696 |
throw new RasterFormatException("Incorrect raster attributes"); |
|
697 |
} |
|
698 |
lastPixelOffset += lastScanOffset; |
|
699 |
||
18225 | 700 |
int index; |
701 |
int maxIndex = 0; |
|
16868 | 702 |
for (int i = 0; i < numDataElements; i++) { |
703 |
if (dataOffsets[i] > (Integer.MAX_VALUE - lastPixelOffset)) { |
|
704 |
throw new RasterFormatException("Incorrect band offset: " |
|
705 |
+ dataOffsets[i]); |
|
706 |
} |
|
707 |
||
18225 | 708 |
index = lastPixelOffset + dataOffsets[i]; |
16868 | 709 |
|
18225 | 710 |
if (index > maxIndex) { |
711 |
maxIndex = index; |
|
2 | 712 |
} |
713 |
} |
|
18225 | 714 |
if (data.length <= maxIndex) { |
715 |
throw new RasterFormatException("Data array too small (should be > " |
|
716 |
+ maxIndex + " )"); |
|
2 | 717 |
} |
718 |
} |
|
719 |
||
720 |
public String toString() { |
|
721 |
return new String ("IntegerComponentRaster: width = "+width |
|
722 |
+" height = " + height |
|
723 |
+" #Bands = " + numBands |
|
724 |
+" #DataElements "+numDataElements |
|
725 |
+" xOff = "+sampleModelTranslateX |
|
726 |
+" yOff = "+sampleModelTranslateY |
|
727 |
+" dataOffset[0] "+dataOffsets[0]); |
|
728 |
} |
|
729 |
||
730 |
// /** |
|
731 |
// * For debugging... prints a region of a one-band IntegerComponentRaster |
|
732 |
// */ |
|
733 |
// public void print(int x, int y, int w, int h) { |
|
734 |
// // REMIND: Only works for 1 band! |
|
735 |
// System.out.println(this); |
|
736 |
// int offset = dataOffsets[0] + y*scanlineStride + x*pixelStride; |
|
737 |
// int off; |
|
738 |
// for (int yoff=0; yoff < h; yoff++, offset += scanlineStride) { |
|
739 |
// off = offset; |
|
740 |
// System.out.print("Line "+(sampleModelTranslateY+y+yoff)+": "); |
|
741 |
// for (int xoff = 0; xoff < w; xoff++, off+= pixelStride) { |
|
742 |
// System.out.print(Integer.toHexString(data[off])+" "); |
|
743 |
// } |
|
744 |
// System.out.println(""); |
|
745 |
// } |
|
746 |
// } |
|
747 |
||
748 |
} |