Source Code Cross Referenced for ComponentSampleModel.java in  » Apache-Harmony-Java-SE » java-package » java » awt » image » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Apache Harmony Java SE » java package » java.awt.image 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *  Licensed to the Apache Software Foundation (ASF) under one or more
003:         *  contributor license agreements.  See the NOTICE file distributed with
004:         *  this work for additional information regarding copyright ownership.
005:         *  The ASF licenses this file to You under the Apache License, Version 2.0
006:         *  (the "License"); you may not use this file except in compliance with
007:         *  the License.  You may obtain a copy of the License at
008:         *
009:         *     http://www.apache.org/licenses/LICENSE-2.0
010:         *
011:         *  Unless required by applicable law or agreed to in writing, software
012:         *  distributed under the License is distributed on an "AS IS" BASIS,
013:         *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         *  See the License for the specific language governing permissions and
015:         *  limitations under the License.
016:         */
017:        /**
018:         * @author Igor V. Stolyarov
019:         * @version $Revision$
020:         */package java.awt.image;
021:
022:        import java.util.Arrays;
023:
024:        import org.apache.harmony.awt.internal.nls.Messages;
025:
026:        public class ComponentSampleModel extends SampleModel {
027:
028:            protected int bandOffsets[];
029:
030:            protected int bankIndices[];
031:
032:            protected int numBands;
033:
034:            protected int numBanks;
035:
036:            protected int scanlineStride;
037:
038:            protected int pixelStride;
039:
040:            public ComponentSampleModel(int dataType, int w, int h,
041:                    int pixelStride, int scanlineStride, int bankIndices[],
042:                    int bandOffsets[]) {
043:
044:                super (dataType, w, h, bandOffsets.length);
045:
046:                if (pixelStride < 0) {
047:                    // awt.24B=Pixel stride must be >= 0
048:                    throw new IllegalArgumentException(Messages
049:                            .getString("awt.24B")); //$NON-NLS-1$
050:                }
051:
052:                if (scanlineStride < 0) {
053:                    // awt.24C=Scanline stride must be >= 0
054:                    throw new IllegalArgumentException(Messages
055:                            .getString("awt.24C")); //$NON-NLS-1$
056:                }
057:
058:                if (bankIndices.length != bandOffsets.length) {
059:                    // awt.24D=Bank Indices length must be equal Bank Offsets length
060:                    throw new IllegalArgumentException(Messages
061:                            .getString("awt.24D")); //$NON-NLS-1$
062:                }
063:
064:                this .pixelStride = pixelStride;
065:                this .scanlineStride = scanlineStride;
066:                this .bandOffsets = bandOffsets.clone();
067:                this .bankIndices = bankIndices.clone();
068:                this .numBands = bandOffsets.length;
069:
070:                int maxBank = 0;
071:                for (int i = 0; i < bankIndices.length; i++) {
072:                    if (bankIndices[i] < 0) {
073:                        // awt.24E=Index of {0} bank must be >= 0
074:                        throw new IllegalArgumentException(Messages.getString(
075:                                "awt.24E", i)); //$NON-NLS-1$
076:                    }
077:                    if (bankIndices[i] > maxBank) {
078:                        maxBank = bankIndices[i];
079:                    }
080:                }
081:                this .numBanks = maxBank + 1;
082:
083:            }
084:
085:            public ComponentSampleModel(int dataType, int w, int h,
086:                    int pixelStride, int scanlineStride, int bandOffsets[]) {
087:
088:                super (dataType, w, h, bandOffsets.length);
089:                if (pixelStride < 0) {
090:                    // awt.24B=Pixel stride must be >= 0
091:                    throw new IllegalArgumentException(Messages
092:                            .getString("awt.24B")); //$NON-NLS-1$
093:                }
094:
095:                if (scanlineStride < 0) {
096:                    // awt.24C=Scanline stride must be >= 0
097:                    throw new IllegalArgumentException(Messages
098:                            .getString("awt.24C")); //$NON-NLS-1$
099:                }
100:
101:                this .pixelStride = pixelStride;
102:                this .scanlineStride = scanlineStride;
103:                this .bandOffsets = bandOffsets.clone();
104:                this .numBands = bandOffsets.length;
105:                this .numBanks = 1;
106:
107:                this .bankIndices = new int[numBands];
108:                for (int i = 0; i < numBands; i++) {
109:                    bankIndices[i] = 0;
110:                }
111:            }
112:
113:            @Override
114:            public Object getDataElements(int x, int y, Object obj,
115:                    DataBuffer data) {
116:                if (x < 0 || y < 0 || x >= this .width || y >= this .height) {
117:                    // awt.63=Coordinates are not in bounds
118:                    throw new ArrayIndexOutOfBoundsException(Messages
119:                            .getString("awt.63")); //$NON-NLS-1$
120:                }
121:                switch (dataType) {
122:                case DataBuffer.TYPE_BYTE:
123:                    byte bdata[];
124:                    if (obj == null) {
125:                        bdata = new byte[numBands];
126:                    } else {
127:                        bdata = (byte[]) obj;
128:                    }
129:
130:                    for (int i = 0; i < numBands; i++) {
131:                        bdata[i] = (byte) getSample(x, y, i, data);
132:                    }
133:
134:                    obj = bdata;
135:                    break;
136:
137:                case DataBuffer.TYPE_SHORT:
138:                case DataBuffer.TYPE_USHORT:
139:                    short sdata[];
140:                    if (obj == null) {
141:                        sdata = new short[numBands];
142:                    } else {
143:                        sdata = (short[]) obj;
144:                    }
145:
146:                    for (int i = 0; i < numBands; i++) {
147:                        sdata[i] = (short) getSample(x, y, i, data);
148:                    }
149:
150:                    obj = sdata;
151:                    break;
152:
153:                case DataBuffer.TYPE_INT:
154:                    int idata[];
155:                    if (obj == null) {
156:                        idata = new int[numBands];
157:                    } else {
158:                        idata = (int[]) obj;
159:                    }
160:
161:                    for (int i = 0; i < numBands; i++) {
162:                        idata[i] = getSample(x, y, i, data);
163:                    }
164:
165:                    obj = idata;
166:                    break;
167:
168:                case DataBuffer.TYPE_FLOAT:
169:                    float fdata[];
170:                    if (obj == null) {
171:                        fdata = new float[numBands];
172:                    } else {
173:                        fdata = (float[]) obj;
174:                    }
175:
176:                    for (int i = 0; i < numBands; i++) {
177:                        fdata[i] = getSampleFloat(x, y, i, data);
178:                    }
179:
180:                    obj = fdata;
181:                    break;
182:
183:                case DataBuffer.TYPE_DOUBLE:
184:                    double ddata[];
185:                    if (obj == null) {
186:                        ddata = new double[numBands];
187:                    } else {
188:                        ddata = (double[]) obj;
189:                    }
190:
191:                    for (int i = 0; i < numBands; i++) {
192:                        ddata[i] = getSampleDouble(x, y, i, data);
193:                    }
194:
195:                    obj = ddata;
196:                    break;
197:                }
198:
199:                return obj;
200:            }
201:
202:            @Override
203:            public void setDataElements(int x, int y, Object obj,
204:                    DataBuffer data) {
205:                if (x < 0 || y < 0 || x >= this .width || y >= this .height) {
206:                    // awt.63=Coordinates are not in bounds
207:                    throw new ArrayIndexOutOfBoundsException(Messages
208:                            .getString("awt.63")); //$NON-NLS-1$
209:                }
210:                switch (dataType) {
211:                case DataBuffer.TYPE_BYTE:
212:                    byte barr[] = (byte[]) obj;
213:                    for (int i = 0; i < numBands; i++) {
214:                        setSample(x, y, i, barr[i] & 0xff, data);
215:                    }
216:                    break;
217:
218:                case DataBuffer.TYPE_SHORT:
219:                case DataBuffer.TYPE_USHORT:
220:                    short sarr[] = (short[]) obj;
221:                    for (int i = 0; i < numBands; i++) {
222:                        setSample(x, y, i, sarr[i] & 0xffff, data);
223:                    }
224:                    break;
225:
226:                case DataBuffer.TYPE_INT:
227:                    int iarr[] = (int[]) obj;
228:                    for (int i = 0; i < numBands; i++) {
229:                        setSample(x, y, i, iarr[i], data);
230:                    }
231:                    break;
232:
233:                case DataBuffer.TYPE_FLOAT:
234:                    float farr[] = (float[]) obj;
235:                    for (int i = 0; i < numBands; i++) {
236:                        setSample(x, y, i, farr[i], data);
237:                    }
238:                    break;
239:
240:                case DataBuffer.TYPE_DOUBLE:
241:                    double darr[] = (double[]) obj;
242:                    for (int i = 0; i < numBands; i++) {
243:                        setSample(x, y, i, darr[i], data);
244:                    }
245:                    break;
246:                }
247:            }
248:
249:            @Override
250:            public boolean equals(Object o) {
251:                if ((o == null) || !(o instanceof  ComponentSampleModel)) {
252:                    return false;
253:                }
254:                ComponentSampleModel model = (ComponentSampleModel) o;
255:                return this .width == model.width && this .height == model.height
256:                        && this .numBands == model.numBands
257:                        && this .dataType == model.dataType
258:                        && Arrays.equals(this .bandOffsets, model.bandOffsets)
259:                        && Arrays.equals(this .bankIndices, model.bankIndices)
260:                        && this .numBands == model.numBands
261:                        && this .numBanks == model.numBanks
262:                        && this .scanlineStride == model.scanlineStride
263:                        && this .pixelStride == model.pixelStride;
264:            }
265:
266:            @Override
267:            public SampleModel createSubsetSampleModel(int bands[]) {
268:                if (bands.length > this .numBands) {
269:                    // awt.64=The number of the bands in the subset is greater than the number of bands in the sample model
270:                    throw new RasterFormatException(Messages
271:                            .getString("awt.64")); //$NON-NLS-1$
272:                }
273:
274:                int indices[] = new int[bands.length];
275:                int offsets[] = new int[bands.length];
276:
277:                for (int i = 0; i < bands.length; i++) {
278:                    indices[i] = bankIndices[bands[i]];
279:                    offsets[i] = bandOffsets[bands[i]];
280:                }
281:
282:                return new ComponentSampleModel(dataType, width, height,
283:                        pixelStride, scanlineStride, indices, offsets);
284:
285:            }
286:
287:            @Override
288:            public SampleModel createCompatibleSampleModel(int w, int h) {
289:                return new ComponentSampleModel(dataType, w, h, pixelStride,
290:                        pixelStride * w, bankIndices, bandOffsets);
291:            }
292:
293:            @Override
294:            public int[] getPixel(int x, int y, int iArray[], DataBuffer data) {
295:                int pixel[];
296:
297:                if (iArray == null) {
298:                    pixel = new int[numBands];
299:                } else {
300:                    pixel = iArray;
301:                }
302:
303:                for (int i = 0; i < numBands; i++) {
304:                    pixel[i] = getSample(x, y, i, data);
305:                }
306:
307:                return pixel;
308:            }
309:
310:            @Override
311:            public void setPixel(int x, int y, int iArray[], DataBuffer data) {
312:                for (int i = 0; i < numBands; i++) {
313:                    setSample(x, y, i, iArray[i], data);
314:                }
315:            }
316:
317:            @Override
318:            public int getSample(int x, int y, int b, DataBuffer data) {
319:                if (x < 0 || y < 0 || x >= this .width || y >= this .height) {
320:                    // awt.63=Coordinates are not in bounds
321:                    throw new ArrayIndexOutOfBoundsException(Messages
322:                            .getString("awt.63")); //$NON-NLS-1$
323:                }
324:
325:                return data.getElem(bankIndices[b], y * scanlineStride + x
326:                        * pixelStride + bandOffsets[b]);
327:            }
328:
329:            @Override
330:            public float getSampleFloat(int x, int y, int b, DataBuffer data) {
331:                if (x < 0 || y < 0 || x >= this .width || y >= this .height) {
332:                    // awt.63=Coordinates are not in bounds
333:                    throw new ArrayIndexOutOfBoundsException(Messages
334:                            .getString("awt.63")); //$NON-NLS-1$
335:                }
336:
337:                return data.getElemFloat(bankIndices[b], y * scanlineStride + x
338:                        * pixelStride + bandOffsets[b]);
339:            }
340:
341:            @Override
342:            public double getSampleDouble(int x, int y, int b, DataBuffer data) {
343:                if (x < 0 || y < 0 || x >= this .width || y >= this .height) {
344:                    // awt.63=Coordinates are not in bounds
345:                    throw new ArrayIndexOutOfBoundsException(Messages
346:                            .getString("awt.63")); //$NON-NLS-1$
347:                }
348:
349:                return data.getElemDouble(bankIndices[b], y * scanlineStride
350:                        + x * pixelStride + bandOffsets[b]);
351:            }
352:
353:            @Override
354:            public int[] getPixels(int x, int y, int w, int h, int iArray[],
355:                    DataBuffer data) {
356:                if (x < 0 || y < 0 || x > this .width || x + w > this .width
357:                        || y > this .height || y + h > this .height) {
358:                    // awt.63=Coordinates are not in bounds
359:                    throw new ArrayIndexOutOfBoundsException(Messages
360:                            .getString("awt.63")); //$NON-NLS-1$
361:                }
362:                int pixels[] = null;
363:                int idx = 0;
364:
365:                if (iArray == null) {
366:                    pixels = new int[w * h * numBands];
367:                } else {
368:                    pixels = iArray;
369:                }
370:
371:                for (int i = y; i < y + h; i++) {
372:                    for (int j = x; j < x + w; j++) {
373:                        for (int n = 0; n < numBands; n++) {
374:                            pixels[idx++] = getSample(j, i, n, data);
375:                        }
376:                    }
377:                }
378:
379:                return pixels;
380:            }
381:
382:            @Override
383:            public void setPixels(int x, int y, int w, int h, int iArray[],
384:                    DataBuffer data) {
385:                if (x < 0 || y < 0 || x + w > this .width || y + h > this .height) {
386:                    // awt.63=Coordinates are not in bounds
387:                    throw new ArrayIndexOutOfBoundsException(Messages
388:                            .getString("awt.63")); //$NON-NLS-1$
389:                }
390:                int idx = 0;
391:                for (int i = y; i < y + h; i++) {
392:                    for (int j = x; j < x + w; j++) {
393:                        for (int n = 0; n < numBands; n++) {
394:                            setSample(j, i, n, iArray[idx++], data);
395:                        }
396:                    }
397:                }
398:            }
399:
400:            @Override
401:            public void setSample(int x, int y, int b, int s, DataBuffer data) {
402:                if (x < 0 || y < 0 || x >= this .width || y >= this .height) {
403:                    // awt.63=Coordinates are not in bounds
404:                    throw new ArrayIndexOutOfBoundsException(Messages
405:                            .getString("awt.63")); //$NON-NLS-1$
406:                }
407:
408:                data.setElem(bankIndices[b], y * scanlineStride + x
409:                        * pixelStride + bandOffsets[b], s);
410:            }
411:
412:            @Override
413:            public int[] getSamples(int x, int y, int w, int h, int b,
414:                    int iArray[], DataBuffer data) {
415:                if (x < 0 || y < 0 || x + w > this .width || y + h > this .height) {
416:                    // awt.63=Coordinates are not in bounds
417:                    throw new ArrayIndexOutOfBoundsException(Messages
418:                            .getString("awt.63")); //$NON-NLS-1$
419:                }
420:                int samples[];
421:                int idx = 0;
422:
423:                if (iArray == null) {
424:                    samples = new int[w * h];
425:                } else {
426:                    samples = iArray;
427:                }
428:
429:                if (data == null) {
430:                    // awt.295=data is null
431:                    throw new NullPointerException(Messages
432:                            .getString("awt.295")); //$NON-NLS-1$
433:                }
434:
435:                for (int i = y; i < y + h; i++) {
436:                    for (int j = x; j < x + w; j++) {
437:                        samples[idx++] = getSample(j, i, b, data);
438:                    }
439:                }
440:
441:                return samples;
442:            }
443:
444:            @Override
445:            public void setSamples(int x, int y, int w, int h, int b,
446:                    int iArray[], DataBuffer data) {
447:                if (x < 0 || y < 0 || x + w > this .width || y + h > this .height) {
448:                    // awt.63=Coordinates are not in bounds
449:                    throw new ArrayIndexOutOfBoundsException(Messages
450:                            .getString("awt.63")); //$NON-NLS-1$
451:                }
452:                int idx = 0;
453:                for (int i = y; i < y + h; i++) {
454:                    for (int j = x; j < x + w; j++) {
455:                        setSample(j, i, b, iArray[idx++], data);
456:                    }
457:                }
458:            }
459:
460:            @Override
461:            public void setSample(int x, int y, int b, float s, DataBuffer data) {
462:                if (x < 0 || y < 0 || x >= this .width || y >= this .height) {
463:                    // awt.63=Coordinates are not in bounds
464:                    throw new ArrayIndexOutOfBoundsException(Messages
465:                            .getString("awt.63")); //$NON-NLS-1$
466:                }
467:
468:                data.setElemFloat(bankIndices[b], y * scanlineStride + x
469:                        * pixelStride + bandOffsets[b], s);
470:            }
471:
472:            @Override
473:            public void setSample(int x, int y, int b, double s, DataBuffer data) {
474:                if (x < 0 || y < 0 || x >= this .width || y >= this .height) {
475:                    // awt.63=Coordinates are not in bounds
476:                    throw new ArrayIndexOutOfBoundsException(Messages
477:                            .getString("awt.63")); //$NON-NLS-1$
478:                }
479:
480:                data.setElemDouble(bankIndices[b], y * scanlineStride + x
481:                        * pixelStride + bandOffsets[b], s);
482:            }
483:
484:            @Override
485:            public DataBuffer createDataBuffer() {
486:                DataBuffer data = null;
487:
488:                int maxOffset = bandOffsets[0];
489:                for (int i = 1; i < bandOffsets.length; i++) {
490:                    if (bandOffsets[i] > maxOffset) {
491:                        maxOffset = bandOffsets[i];
492:                    }
493:                }
494:                int size = (height - 1) * scanlineStride + (width - 1)
495:                        * pixelStride + maxOffset + 1;
496:
497:                switch (dataType) {
498:                case DataBuffer.TYPE_BYTE:
499:                    data = new DataBufferByte(size, numBanks);
500:                    break;
501:                case DataBuffer.TYPE_SHORT:
502:                    data = new DataBufferShort(size, numBanks);
503:                    break;
504:                case DataBuffer.TYPE_USHORT:
505:                    data = new DataBufferUShort(size, numBanks);
506:                    break;
507:                case DataBuffer.TYPE_INT:
508:                    data = new DataBufferInt(size, numBanks);
509:                    break;
510:                case DataBuffer.TYPE_FLOAT:
511:                    data = new DataBufferFloat(size, numBanks);
512:                    break;
513:                case DataBuffer.TYPE_DOUBLE:
514:                    data = new DataBufferDouble(size, numBanks);
515:                    break;
516:                }
517:
518:                return data;
519:
520:            }
521:
522:            public int getOffset(int x, int y, int b) {
523:                return y * scanlineStride + x * pixelStride + bandOffsets[b];
524:            }
525:
526:            public int getOffset(int x, int y) {
527:                return y * scanlineStride + x * pixelStride + bandOffsets[0];
528:            }
529:
530:            @Override
531:            public final int getSampleSize(int band) {
532:                return DataBuffer.getDataTypeSize(dataType);
533:            }
534:
535:            @Override
536:            public final int[] getSampleSize() {
537:                int sampleSizes[] = new int[numBands];
538:                int size = DataBuffer.getDataTypeSize(dataType);
539:
540:                for (int i = 0; i < numBands; i++) {
541:                    sampleSizes[i] = size;
542:                }
543:                return sampleSizes;
544:            }
545:
546:            public final int[] getBankIndices() {
547:                return bankIndices.clone();
548:            }
549:
550:            public final int[] getBandOffsets() {
551:                return bandOffsets.clone();
552:            }
553:
554:            @Override
555:            public int hashCode() {
556:                int hash = 0;
557:                int tmp = 0;
558:
559:                hash = width;
560:                tmp = hash >>> 24;
561:                hash <<= 8;
562:                hash |= tmp;
563:                hash ^= height;
564:                tmp = hash >>> 24;
565:                hash <<= 8;
566:                hash |= tmp;
567:                hash ^= numBands;
568:                tmp = hash >>> 24;
569:                hash <<= 8;
570:                hash |= tmp;
571:                hash ^= dataType;
572:                tmp = hash >>> 24;
573:                hash <<= 8;
574:                hash |= tmp;
575:                for (int element : bandOffsets) {
576:                    hash ^= element;
577:                    tmp = hash >>> 24;
578:                    hash <<= 8;
579:                    hash |= tmp;
580:                }
581:                for (int element : bankIndices) {
582:                    hash ^= element;
583:                    tmp = hash >>> 24;
584:                    hash <<= 8;
585:                    hash |= tmp;
586:                }
587:                hash ^= pixelStride;
588:                tmp = hash >>> 24;
589:                hash <<= 8;
590:                hash |= tmp;
591:
592:                hash ^= scanlineStride;
593:                return hash;
594:            }
595:
596:            public final int getScanlineStride() {
597:                return scanlineStride;
598:            }
599:
600:            public final int getPixelStride() {
601:                return pixelStride;
602:            }
603:
604:            @Override
605:            public final int getNumDataElements() {
606:                return numBands;
607:            }
608:
609:        }
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