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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/sun/awt/image/IntegerComponentRaster.java (1 of 18352 files). Show all

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1+/*
2+ * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved.
3+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4+ *
5+ * This code is free software; you can redistribute it and/or modify it
6+ * under the terms of the GNU General Public License version 2 only, as
7+ * published by the Free Software Foundation. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+
26+package sun.awt.image;
27+import java.awt.image.Raster;
28+import java.awt.image.WritableRaster;
29+import java.awt.image.RasterFormatException;
30+import java.awt.image.SampleModel;
31+import java.awt.image.SinglePixelPackedSampleModel;
32+import java.awt.image.DataBuffer;
33+import java.awt.image.DataBufferInt;
34+import java.awt.Rectangle;
35+import java.awt.Point;
36+
37+/**
38+ * This class defines a Raster with pixels consisting of one or more 32-bit
39+ * data elements stored in close proximity to each other in a integer array.
40+ * The bit precision per data element is that
41+ * of the data type (that is, the bit precision for this raster is 32).
42+ * There is only one pixel stride and one scanline stride for all
43+ * 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 {
54+
55+ static final int TYPE_CUSTOM = 0;
56+ static final int TYPE_BYTE_SAMPLES = 1;
57+ static final int TYPE_USHORT_SAMPLES = 2;
58+ static final int TYPE_INT_SAMPLES = 3;
59+ static final int TYPE_BYTE_BANDED_SAMPLES = 4;
60+ static final int TYPE_USHORT_BANDED_SAMPLES = 5;
61+ static final int TYPE_INT_BANDED_SAMPLES = 6;
62+ static final int TYPE_BYTE_PACKED_SAMPLES = 7;
63+ static final int TYPE_USHORT_PACKED_SAMPLES = 8;
64+ static final int TYPE_INT_PACKED_SAMPLES = 9;
65+ static final int TYPE_INT_8BIT_SAMPLES = 10;
66+ static final int TYPE_BYTE_BINARY_SAMPLES = 11;
67+
68+ /** private band offset for use by native code */
69+ protected int bandOffset;
70+
71+ /** Data offsets for each band of image data. */
72+ protected int[] dataOffsets;
73+
74+ /** Scanline stride of the image data contained in this Raster. */
75+ protected int scanlineStride;
76+
77+ /** Pixel stride of the image data contained in this Raster. */
78+ protected int pixelStride;
79+
80+ /** The image data array. */
81+ protected int[] data;
82+
83+ /** The number of data elements required to store a pixel. */
84+ protected int numDataElems;
85+
86+ int type;
87+
88+ /** A cached copy of minX + width for use in bounds checks. */
89+ private int maxX;
90+
91+ /** A cached copy of minY + height for use in bounds checks. */
92+ private int maxY;
93+
94+ static private native void initIDs();
95+ static {
96+ /* ensure that the necessary native libraries are loaded */
97+ NativeLibLoader.loadLibraries();
98+ initIDs();
99+ }
100+
101+ /**
102+ * Constructs a IntegerComponentRaster with the given SampleModel.
103+ * The Raster's upper left corner is origin and it is the same
104+ * size as the SampleModel. A DataBuffer large enough to describe the
105+ * Raster is automatically created. SampleModel must be of type
106+ * SinglePixelPackedSampleModel.
107+ * @param sampleModel The SampleModel that specifies the layout.
108+ * @param origin The Point that specified the origin.
109+ */
110+ public IntegerComponentRaster(SampleModel sampleModel,
111+ Point origin) {
112+ this(sampleModel,
113+ sampleModel.createDataBuffer(),
114+ new Rectangle(origin.x,
115+ origin.y,
116+ sampleModel.getWidth(),
117+ sampleModel.getHeight()),
118+ origin,
119+ null);
120+ }
121+
122+ /**
123+ * Constructs a IntegerComponentRaster with the given SampleModel
124+ * and DataBuffer. The Raster's upper left corner is origin and
125+ * it is the same sizes the SampleModel. The DataBuffer is not
126+ * initialized and must be a DataBufferInt compatible with SampleModel.
127+ * SampleModel must be of type SinglePixelPackedSampleModel.
128+ * @param sampleModel The SampleModel that specifies the layout.
129+ * @param dataBuffer The DataBufferInt that contains the image data.
130+ * @param origin The Point that specifies the origin.
131+ */
132+ public IntegerComponentRaster(SampleModel sampleModel,
133+ DataBuffer dataBuffer,
134+ Point origin) {
135+ this(sampleModel,
136+ dataBuffer,
137+ new Rectangle(origin.x,
138+ origin.y,
139+ sampleModel.getWidth(),
140+ sampleModel.getHeight()),
141+ origin,
142+ null);
143+ }
144+
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.
149+ * When translated into the base Raster's
150+ * coordinate system, aRegion must be contained by the base Raster.
151+ * Origin is the coodinate in the new Raster's coordinate system of
152+ * the origin of the base Raster. (The base Raster is the Raster's
153+ * ancestor which has no parent.)
154+ *
155+ * Note that this constructor should generally be called by other
156+ * constructors or create methods, it should not be used directly.
157+ * @param sampleModel The SampleModel that specifies the layout.
158+ * @param dataBuffer The DataBufferInt that contains the image data.
159+ * @param aRegion The Rectangle that specifies the image area.
160+ * @param origin The Point that specifies the origin.
161+ * @param parent The parent (if any) of this raster.
162+ */
163+ public IntegerComponentRaster(SampleModel sampleModel,
164+ DataBuffer dataBuffer,
165+ Rectangle aRegion,
166+ Point origin,
167+ IntegerComponentRaster parent){
168+ super(sampleModel,dataBuffer,aRegion,origin,parent);
169+ this.maxX = minX + width;
170+ this.maxY = minY + height;
171+ if (!(dataBuffer instanceof DataBufferInt)) {
172+ throw new RasterFormatException("IntegerComponentRasters must have" +
173+ "integer DataBuffers");
174+ }
175+ DataBufferInt dbi = (DataBufferInt)dataBuffer;
176+ if (dbi.getNumBanks() != 1) {
177+ throw new
178+ RasterFormatException("DataBuffer for IntegerComponentRasters"+
179+ " must only have 1 bank.");
180+ }
181+ this.data = stealData(dbi, 0);
182+
183+ if (sampleModel instanceof SinglePixelPackedSampleModel) {
184+ SinglePixelPackedSampleModel sppsm =
185+ (SinglePixelPackedSampleModel)sampleModel;
186+ int[] boffsets = sppsm.getBitOffsets();
187+ boolean notByteBoundary = false;
188+ for (int i=1; i < boffsets.length; i++) {
189+ if ((boffsets[i]%8) != 0) {
190+ notByteBoundary = true;
191+ }
192+ }
193+ this.type = (notByteBoundary
194+ ? IntegerComponentRaster.TYPE_INT_PACKED_SAMPLES
195+ : IntegerComponentRaster.TYPE_INT_8BIT_SAMPLES);
196+
197+ this.scanlineStride = sppsm.getScanlineStride();
198+ this.pixelStride = 1;
199+ this.dataOffsets = new int[1];
200+ this.dataOffsets[0] = dbi.getOffset();
201+ this.bandOffset = this.dataOffsets[0];
202+ int xOffset = aRegion.x - origin.x;
203+ int yOffset = aRegion.y - origin.y;
204+ dataOffsets[0] += xOffset+yOffset*scanlineStride;
205+ this.numDataElems = sppsm.getNumDataElements();
206+ } else {
207+ throw new RasterFormatException("IntegerComponentRasters must have"+
208+ " SinglePixelPackedSampleModel");
209+ }
210+
211+ verify(false);
212+ }
213+
214+
215+ /**
216+ * Returns a copy of the data offsets array. For each band the data offset
217+ * is the index into the band's data array, of the first sample of the
218+ * band.
219+ */
220+ public int[] getDataOffsets() {
221+ return (int[]) dataOffsets.clone();
222+ }
223+
224+ /**
225+ * Returns data offset for the specified band. The data offset
226+ * is the index into the data array in which the first sample
227+ * of the first scanline is stored.
228+ */
229+ public int getDataOffset(int band) {
230+ return dataOffsets[band];
231+ }
232+
233+
234+ /**
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;
240+ }
241+
242+ /**
243+ * Returns pixel stride -- the number of data array elements between two
244+ * samples for the same band on the same scanline.
245+ */
246+ public int getPixelStride() {
247+ return pixelStride;
248+ }
249+
250+ /**
251+ * Returns a reference to the data array.
252+ */
253+ public int[] getDataStorage() {
254+ return data;
255+ }
256+
257+ /**
258+ * Returns the data elements for all bands at the specified
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.
264+ * @param x The X coordinate of the pixel location.
265+ * @param y The Y coordinate of the pixel location.
266+ * @param outData An object reference to an array of type defined by
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.
298+ * 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.
312+ * @param width Width of the pixel rectangle.
313+ * @param height Height of the pixel rectangle.
314+ * @param outData An object reference to an array of type defined by
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.
361+ * @param inData An object reference to an array of type defined by
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.
492+ * @param inData An object reference to an array of type defined by
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+ /**
632+ * Verify that the layout parameters are consistent with
633+ * the data. If strictCheck
634+ * is false, this method will check for ArrayIndexOutOfBounds conditions. If
635+ * strictCheck is true, this method will check for additional error
636+ * conditions such as line wraparound (width of a line greater than
637+ * the scanline stride).
638+ * @return String Error string, if the layout is incompatible with
639+ * the data. Otherwise returns null.
640+ */
641+ private void verify (boolean strictCheck) {
642+ if (dataOffsets[0] < 0) {
643+ throw new RasterFormatException("Data offset ("+dataOffsets[0]+
644+ ") must be >= 0");
645+ }
646+
647+ int maxSize = 0;
648+ int size;
649+
650+ for (int i=0; i < numDataElements; i++) {
651+ size = (height-1)*scanlineStride + (width-1)*pixelStride +
652+ dataOffsets[i];
653+ if (size > maxSize) {
654+ maxSize = size;
655+ }
656+ }
657+ if (data.length < maxSize) {
658+ throw new RasterFormatException("Data array too small (should be "+
659+ maxSize
660+ +" but is "+data.length+" )");
661+ }
662+ }
663+
664+ public String toString() {
665+ return new String ("IntegerComponentRaster: width = "+width
666+ +" height = " + height
667+ +" #Bands = " + numBands
668+ +" #DataElements "+numDataElements
669+ +" xOff = "+sampleModelTranslateX
670+ +" yOff = "+sampleModelTranslateY
671+ +" dataOffset[0] "+dataOffsets[0]);
672+ }
673+
674+// /**
675+// * For debugging... prints a region of a one-band IntegerComponentRaster
676+// */
677+// public void print(int x, int y, int w, int h) {
678+// // REMIND: Only works for 1 band!
679+// System.out.println(this);
680+// int offset = dataOffsets[0] + y*scanlineStride + x*pixelStride;
681+// int off;
682+// for (int yoff=0; yoff < h; yoff++, offset += scanlineStride) {
683+// off = offset;
684+// System.out.print("Line "+(sampleModelTranslateY+y+yoff)+": ");
685+// for (int xoff = 0; xoff < w; xoff++, off+= pixelStride) {
686+// System.out.print(Integer.toHexString(data[off])+" ");
687+// }
688+// System.out.println("");
689+// }
690+// }
691+
692+}