Source Code Cross Referenced for SeparableConvolveOpImage.java in  » 6.0-JDK-Modules » Java-Advanced-Imaging » com » sun » media » jai » opimage » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » Java Advanced Imaging » com.sun.media.jai.opimage 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $RCSfile: SeparableConvolveOpImage.java,v $
003:         *
004:         * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
005:         *
006:         * Use is subject to license terms.
007:         *
008:         * $Revision: 1.1 $
009:         * $Date: 2005/02/11 04:56:43 $
010:         * $State: Exp $
011:         */
012:        package com.sun.media.jai.opimage;
013:
014:        import java.awt.Rectangle;
015:        import java.awt.image.DataBuffer;
016:        import java.awt.image.SampleModel;
017:        import java.awt.image.Raster;
018:        import java.awt.image.RenderedImage;
019:        import java.awt.image.WritableRaster;
020:        import java.awt.image.renderable.ParameterBlock;
021:        import java.awt.image.renderable.RenderedImageFactory;
022:        import javax.media.jai.AreaOpImage;
023:        import javax.media.jai.BorderExtender;
024:        import javax.media.jai.ImageLayout;
025:        import javax.media.jai.RasterAccessor;
026:        import javax.media.jai.RasterFormatTag;
027:        import javax.media.jai.KernelJAI;
028:        import javax.media.jai.OpImage;
029:        import java.util.Map;
030:
031:        // import com.sun.media.jai.test.OpImageTester;
032:
033:        /**
034:         * An OpImage class to perform separable convolve on a source image.
035:         *
036:         *
037:         */
038:        final class SeparableConvolveOpImage extends AreaOpImage {
039:
040:            static int byteLoopCounter = 0;
041:
042:            protected KernelJAI kernel;
043:            protected int kw, kh, kx, ky;
044:
045:            protected float hValues[];
046:            protected float vValues[];
047:            protected float hTables[][];
048:
049:            /**
050:             * Creates a SeparableConvoveOpImage on the source 
051:             * with the given pre-rotated kernel.  The image dimensions are
052:             * derived  the source image.  The tile grid layout, SampleModel, and
053:             * ColorModel may optionally be specified by an ImageLayout
054:             * object.
055:             *
056:             * @param source a RenderedImage.
057:             * @param extender a BorderExtender, or null.
058:             * @param layout an ImageLayout optionally containing the tile grid layout,
059:             *        SampleModel, and ColorModel, or null.
060:             * @param kernel a pre-rotated convolution kernel
061:             */
062:            public SeparableConvolveOpImage(RenderedImage source,
063:                    BorderExtender extender, Map config, ImageLayout layout,
064:                    KernelJAI kernel) {
065:                super (source, layout, config, true, extender, kernel
066:                        .getLeftPadding(), kernel.getRightPadding(), kernel
067:                        .getTopPadding(), kernel.getBottomPadding());
068:
069:                this .kernel = kernel;
070:                kw = kernel.getWidth();
071:                kh = kernel.getHeight();
072:                kx = kernel.getXOrigin();
073:                ky = kernel.getYOrigin();
074:                hValues = kernel.getHorizontalKernelData();
075:                vValues = kernel.getVerticalKernelData();
076:
077:                if (sampleModel.getDataType() == DataBuffer.TYPE_BYTE) {
078:                    hTables = new float[hValues.length][256];
079:                    for (int i = 0; i < hValues.length; i++) {
080:                        float k = hValues[i];
081:                        for (int j = 0; j < 256; j++) {
082:                            byte b = (byte) j;
083:                            float f = (float) j;
084:                            hTables[i][b + 128] = k * f;
085:                        }
086:                    }
087:                }
088:            }
089:
090:            /**
091:             * Performs convolution on a specified rectangle. The sources are
092:             * cobbled.
093:             *
094:             * @param sources an array of source Rasters, guaranteed to provide all
095:             *                necessary source data for computing the output.
096:             * @param dest a WritableRaster tile containing the area to be computed.
097:             * @param destRect the rectangle within dest to be processed.
098:             */
099:            protected void computeRect(Raster[] sources, WritableRaster dest,
100:                    Rectangle destRect) {
101:                // Retrieve format tags.
102:                RasterFormatTag[] formatTags = getFormatTags();
103:
104:                Raster source = sources[0];
105:                Rectangle srcRect = mapDestRect(destRect, 0);
106:
107:                RasterAccessor srcAccessor = new RasterAccessor(source,
108:                        srcRect, formatTags[0], getSource(0).getColorModel());
109:                RasterAccessor dstAccessor = new RasterAccessor(dest, destRect,
110:                        formatTags[1], this .getColorModel());
111:
112:                switch (dstAccessor.getDataType()) {
113:                case DataBuffer.TYPE_BYTE:
114:                    byteLoop(srcAccessor, dstAccessor);
115:                    break;
116:                case DataBuffer.TYPE_INT:
117:                    intLoop(srcAccessor, dstAccessor);
118:                    break;
119:                case DataBuffer.TYPE_SHORT:
120:                    shortLoop(srcAccessor, dstAccessor);
121:                    break;
122:                case DataBuffer.TYPE_USHORT:
123:                    ushortLoop(srcAccessor, dstAccessor);
124:                    break;
125:                case DataBuffer.TYPE_FLOAT:
126:                    floatLoop(srcAccessor, dstAccessor);
127:                    break;
128:                case DataBuffer.TYPE_DOUBLE:
129:                    doubleLoop(srcAccessor, dstAccessor);
130:                    break;
131:
132:                default:
133:                }
134:
135:                // If the RasterAccessor object set up a temporary buffer for the
136:                // op to write to, tell the RasterAccessor to write that data
137:                // to the raster no that we're done with it.
138:                if (dstAccessor.isDataCopy()) {
139:                    dstAccessor.clampDataArrays();
140:                    dstAccessor.copyDataToRaster();
141:                }
142:            }
143:
144:            protected void byteLoop(RasterAccessor src, RasterAccessor dst) {
145:                int dwidth = dst.getWidth();
146:                int dheight = dst.getHeight();
147:                int dnumBands = dst.getNumBands();
148:
149:                byte dstDataArrays[][] = dst.getByteDataArrays();
150:                int dstBandOffsets[] = dst.getBandOffsets();
151:                int dstPixelStride = dst.getPixelStride();
152:                int dstScanlineStride = dst.getScanlineStride();
153:
154:                byte srcDataArrays[][] = src.getByteDataArrays();
155:                int srcBandOffsets[] = src.getBandOffsets();
156:                int srcPixelStride = src.getPixelStride();
157:                int srcScanlineStride = src.getScanlineStride();
158:
159:                float tmpBuffer[] = new float[kh * dwidth];
160:                int tmpBufferSize = kh * dwidth;
161:
162:                for (int k = 0; k < dnumBands; k++) {
163:                    byte dstData[] = dstDataArrays[k];
164:                    byte srcData[] = srcDataArrays[k];
165:                    int srcScanlineOffset = srcBandOffsets[k];
166:                    int dstScanlineOffset = dstBandOffsets[k];
167:
168:                    int revolver = 0;
169:                    int kvRevolver = 0; // to match kernel vValues
170:                    for (int j = 0; j < kh - 1; j++) {
171:                        int srcPixelOffset = srcScanlineOffset;
172:
173:                        for (int i = 0; i < dwidth; i++) {
174:                            int imageOffset = srcPixelOffset;
175:                            float f = 0.0f;
176:                            for (int v = 0; v < kw; v++) {
177:                                f += hTables[v][srcData[imageOffset] + 128];
178:                                imageOffset += srcPixelStride;
179:                            }
180:                            tmpBuffer[revolver + i] = f;
181:                            srcPixelOffset += srcPixelStride;
182:                        }
183:                        revolver += dwidth;
184:                        srcScanlineOffset += srcScanlineStride;
185:                    }
186:
187:                    // srcScanlineStride already bumped by 
188:                    // kh-1*scanlineStride
189:                    for (int j = 0; j < dheight; j++) {
190:                        int srcPixelOffset = srcScanlineOffset;
191:                        int dstPixelOffset = dstScanlineOffset;
192:
193:                        for (int i = 0; i < dwidth; i++) {
194:                            int imageOffset = srcPixelOffset;
195:                            float f = 0.0f;
196:                            for (int v = 0; v < kw; v++) {
197:                                f += hTables[v][srcData[imageOffset] + 128];
198:                                imageOffset += srcPixelStride;
199:                            }
200:                            tmpBuffer[revolver + i] = f;
201:
202:                            f = 0.5f;
203:                            // int a = 0;  
204:                            // The vertical kernel must revolve as well
205:                            int b = kvRevolver + i;
206:                            for (int a = 0; a < kh; a++) {
207:                                f += tmpBuffer[b] * vValues[a];
208:                                b += dwidth;
209:                                if (b >= tmpBufferSize)
210:                                    b -= tmpBufferSize;
211:                            }
212:
213:                            int val = (int) f;
214:                            if (val < 0) {
215:                                val = 0;
216:                            } else if (val > 255) {
217:                                val = 255;
218:                            }
219:
220:                            dstData[dstPixelOffset] = (byte) val;
221:                            srcPixelOffset += srcPixelStride;
222:                            dstPixelOffset += dstPixelStride;
223:                        }
224:
225:                        revolver += dwidth;
226:                        if (revolver == tmpBufferSize) {
227:                            revolver = 0;
228:                        }
229:                        kvRevolver += dwidth;
230:                        if (kvRevolver == tmpBufferSize) {
231:                            kvRevolver = 0;
232:                        }
233:                        srcScanlineOffset += srcScanlineStride;
234:                        dstScanlineOffset += dstScanlineStride;
235:                    }
236:                }
237:            }
238:
239:            protected void shortLoop(RasterAccessor src, RasterAccessor dst) {
240:                int dwidth = dst.getWidth();
241:                int dheight = dst.getHeight();
242:                int dnumBands = dst.getNumBands();
243:
244:                short dstDataArrays[][] = dst.getShortDataArrays();
245:                int dstBandOffsets[] = dst.getBandOffsets();
246:                int dstPixelStride = dst.getPixelStride();
247:                int dstScanlineStride = dst.getScanlineStride();
248:
249:                short srcDataArrays[][] = src.getShortDataArrays();
250:                int srcBandOffsets[] = src.getBandOffsets();
251:                int srcPixelStride = src.getPixelStride();
252:                int srcScanlineStride = src.getScanlineStride();
253:
254:                float tmpBuffer[] = new float[kh * dwidth];
255:                int tmpBufferSize = kh * dwidth;
256:
257:                for (int k = 0; k < dnumBands; k++) {
258:                    short dstData[] = dstDataArrays[k];
259:                    short srcData[] = srcDataArrays[k];
260:                    int srcScanlineOffset = srcBandOffsets[k];
261:                    int dstScanlineOffset = dstBandOffsets[k];
262:
263:                    int revolver = 0;
264:                    int kvRevolver = 0; // to match kernel vValues
265:                    for (int j = 0; j < kh - 1; j++) {
266:                        int srcPixelOffset = srcScanlineOffset;
267:
268:                        for (int i = 0; i < dwidth; i++) {
269:                            int imageOffset = srcPixelOffset;
270:                            float f = 0.0f;
271:                            for (int v = 0; v < kw; v++) {
272:                                f += (srcData[imageOffset]) * hValues[v];
273:                                imageOffset += srcPixelStride;
274:                            }
275:                            tmpBuffer[revolver + i] = f;
276:                            srcPixelOffset += srcPixelStride;
277:                        }
278:                        revolver += dwidth;
279:                        srcScanlineOffset += srcScanlineStride;
280:                    }
281:
282:                    // srcScanlineStride already bumped by
283:                    // kh-1*scanlineStride
284:
285:                    for (int j = 0; j < dheight; j++) {
286:                        int srcPixelOffset = srcScanlineOffset;
287:                        int dstPixelOffset = dstScanlineOffset;
288:
289:                        for (int i = 0; i < dwidth; i++) {
290:                            int imageOffset = srcPixelOffset;
291:                            float f = 0.0f;
292:                            for (int v = 0; v < kw; v++) {
293:                                f += (srcData[imageOffset]) * hValues[v];
294:                                imageOffset += srcPixelStride;
295:                            }
296:                            tmpBuffer[revolver + i] = f;
297:
298:                            f = 0.5f;
299:                            int b = kvRevolver + i;
300:                            for (int a = 0; a < kh; a++) {
301:                                f += tmpBuffer[b] * vValues[a];
302:                                b += dwidth;
303:                                if (b >= tmpBufferSize)
304:                                    b -= tmpBufferSize;
305:                            }
306:
307:                            int val = (int) f;
308:                            if (val < Short.MIN_VALUE) {
309:                                val = Short.MIN_VALUE;
310:                            } else if (val > Short.MAX_VALUE) {
311:                                val = Short.MAX_VALUE;
312:                            }
313:
314:                            dstData[dstPixelOffset] = (short) val;
315:                            srcPixelOffset += srcPixelStride;
316:                            dstPixelOffset += dstPixelStride;
317:                        }
318:                        revolver += dwidth;
319:
320:                        if (revolver == tmpBufferSize) {
321:                            revolver = 0;
322:                        }
323:                        kvRevolver += dwidth;
324:                        if (kvRevolver == tmpBufferSize) {
325:                            kvRevolver = 0;
326:                        }
327:
328:                        srcScanlineOffset += srcScanlineStride;
329:                        dstScanlineOffset += dstScanlineStride;
330:                    }
331:                }
332:
333:            }
334:
335:            protected void ushortLoop(RasterAccessor src, RasterAccessor dst) {
336:                int dwidth = dst.getWidth();
337:                int dheight = dst.getHeight();
338:                int dnumBands = dst.getNumBands();
339:
340:                short dstDataArrays[][] = dst.getShortDataArrays();
341:                int dstBandOffsets[] = dst.getBandOffsets();
342:                int dstPixelStride = dst.getPixelStride();
343:                int dstScanlineStride = dst.getScanlineStride();
344:
345:                short srcDataArrays[][] = src.getShortDataArrays();
346:                int srcBandOffsets[] = src.getBandOffsets();
347:                int srcPixelStride = src.getPixelStride();
348:                int srcScanlineStride = src.getScanlineStride();
349:                float tmpBuffer[] = new float[kh * dwidth];
350:                int tmpBufferSize = kh * dwidth;
351:
352:                for (int k = 0; k < dnumBands; k++) {
353:                    short dstData[] = dstDataArrays[k];
354:                    short srcData[] = srcDataArrays[k];
355:                    int srcScanlineOffset = srcBandOffsets[k];
356:                    int dstScanlineOffset = dstBandOffsets[k];
357:
358:                    int revolver = 0;
359:                    int kvRevolver = 0; // to match kernel vValues
360:                    for (int j = 0; j < kh - 1; j++) {
361:                        int srcPixelOffset = srcScanlineOffset;
362:
363:                        for (int i = 0; i < dwidth; i++) {
364:                            int imageOffset = srcPixelOffset;
365:                            float f = 0.0f;
366:                            for (int v = 0; v < kw; v++) {
367:                                f += (srcData[imageOffset] & 0xffff)
368:                                        * hValues[v];
369:                                imageOffset += srcPixelStride;
370:                            }
371:                            tmpBuffer[revolver + i] = f;
372:                            srcPixelOffset += srcPixelStride;
373:                        }
374:                        revolver += dwidth;
375:                        srcScanlineOffset += srcScanlineStride;
376:                    }
377:
378:                    // srcScanlineStride already bumped by
379:                    // kh-1*scanlineStride
380:
381:                    for (int j = 0; j < dheight; j++) {
382:                        int srcPixelOffset = srcScanlineOffset;
383:                        int dstPixelOffset = dstScanlineOffset;
384:
385:                        for (int i = 0; i < dwidth; i++) {
386:                            int imageOffset = srcPixelOffset;
387:                            float f = 0.0f;
388:                            for (int v = 0; v < kw; v++) {
389:                                f += (srcData[imageOffset] & 0xffff)
390:                                        * hValues[v];
391:                                imageOffset += srcPixelStride;
392:                            }
393:                            tmpBuffer[revolver + i] = f;
394:
395:                            f = 0.5f;
396:
397:                            int b = kvRevolver + i;
398:                            for (int a = 0; a < kh; a++) {
399:                                f += tmpBuffer[b] * vValues[a];
400:                                b += dwidth;
401:                                if (b >= tmpBufferSize)
402:                                    b -= tmpBufferSize;
403:                            }
404:
405:                            int val = (int) f;
406:                            if (val < 0) {
407:                                val = 0;
408:                            } else if (val > 0xffff) {
409:                                val = 0xffff;
410:                            }
411:
412:                            dstData[dstPixelOffset] = (short) val;
413:                            srcPixelOffset += srcPixelStride;
414:                            dstPixelOffset += dstPixelStride;
415:                        }
416:                        revolver += dwidth;
417:                        if (revolver == tmpBufferSize) {
418:                            revolver = 0;
419:                        }
420:                        kvRevolver += dwidth;
421:                        if (kvRevolver == tmpBufferSize) {
422:                            kvRevolver = 0;
423:                        }
424:                        srcScanlineOffset += srcScanlineStride;
425:                        dstScanlineOffset += dstScanlineStride;
426:                    }
427:                }
428:            }
429:
430:            protected void intLoop(RasterAccessor src, RasterAccessor dst) {
431:                int dwidth = dst.getWidth();
432:                int dheight = dst.getHeight();
433:                int dnumBands = dst.getNumBands();
434:
435:                int dstDataArrays[][] = dst.getIntDataArrays();
436:                int dstBandOffsets[] = dst.getBandOffsets();
437:                int dstPixelStride = dst.getPixelStride();
438:                int dstScanlineStride = dst.getScanlineStride();
439:
440:                int srcDataArrays[][] = src.getIntDataArrays();
441:                int srcBandOffsets[] = src.getBandOffsets();
442:                int srcPixelStride = src.getPixelStride();
443:                int srcScanlineStride = src.getScanlineStride();
444:
445:                float tmpBuffer[] = new float[kh * dwidth];
446:                int tmpBufferSize = kh * dwidth;
447:
448:                for (int k = 0; k < dnumBands; k++) {
449:                    int dstData[] = dstDataArrays[k];
450:                    int srcData[] = srcDataArrays[k];
451:                    int srcScanlineOffset = srcBandOffsets[k];
452:                    int dstScanlineOffset = dstBandOffsets[k];
453:
454:                    int revolver = 0;
455:                    int kvRevolver = 0; // to match kernel vValues
456:                    for (int j = 0; j < kh - 1; j++) {
457:                        int srcPixelOffset = srcScanlineOffset;
458:
459:                        for (int i = 0; i < dwidth; i++) {
460:                            int imageOffset = srcPixelOffset;
461:                            float f = 0.0f;
462:                            for (int v = 0; v < kw; v++) {
463:                                f += (srcData[imageOffset]) * hValues[v];
464:                                imageOffset += srcPixelStride;
465:                            }
466:                            tmpBuffer[revolver + i] = f;
467:                            srcPixelOffset += srcPixelStride;
468:                        }
469:                        revolver += dwidth;
470:                        srcScanlineOffset += srcScanlineStride;
471:                    }
472:
473:                    // srcScanlineStride already bumped by
474:                    // kh-1*scanlineStride
475:                    for (int j = 0; j < dheight; j++) {
476:                        int srcPixelOffset = srcScanlineOffset;
477:                        int dstPixelOffset = dstScanlineOffset;
478:
479:                        for (int i = 0; i < dwidth; i++) {
480:                            int imageOffset = srcPixelOffset;
481:                            float f = 0.0f;
482:                            for (int v = 0; v < kw; v++) {
483:                                f += (srcData[imageOffset]) * hValues[v];
484:                                imageOffset += srcPixelStride;
485:                            }
486:                            tmpBuffer[revolver + i] = f;
487:
488:                            f = 0.5f;
489:
490:                            int b = kvRevolver + i;
491:                            for (int a = 0; a < kh; a++) {
492:                                f += tmpBuffer[b] * vValues[a];
493:                                b += dwidth;
494:                                if (b >= tmpBufferSize)
495:                                    b -= tmpBufferSize;
496:                            }
497:
498:                            int val = (int) f;
499:
500:                            dstData[dstPixelOffset] = val;
501:                            srcPixelOffset += srcPixelStride;
502:                            dstPixelOffset += dstPixelStride;
503:                        }
504:                        revolver += dwidth;
505:                        if (revolver == tmpBufferSize) {
506:                            revolver = 0;
507:                        }
508:                        kvRevolver += dwidth;
509:                        if (kvRevolver == tmpBufferSize) {
510:                            kvRevolver = 0;
511:                        }
512:                        srcScanlineOffset += srcScanlineStride;
513:                        dstScanlineOffset += dstScanlineStride;
514:                    }
515:                }
516:
517:            }
518:
519:            protected void floatLoop(RasterAccessor src, RasterAccessor dst) {
520:                int dwidth = dst.getWidth();
521:                int dheight = dst.getHeight();
522:                int dnumBands = dst.getNumBands();
523:
524:                float dstDataArrays[][] = dst.getFloatDataArrays();
525:                int dstBandOffsets[] = dst.getBandOffsets();
526:                int dstPixelStride = dst.getPixelStride();
527:                int dstScanlineStride = dst.getScanlineStride();
528:
529:                float srcDataArrays[][] = src.getFloatDataArrays();
530:                int srcBandOffsets[] = src.getBandOffsets();
531:                int srcPixelStride = src.getPixelStride();
532:                int srcScanlineStride = src.getScanlineStride();
533:
534:                float tmpBuffer[] = new float[kh * dwidth];
535:                int tmpBufferSize = kh * dwidth;
536:
537:                for (int k = 0; k < dnumBands; k++) {
538:                    float dstData[] = dstDataArrays[k];
539:                    float srcData[] = srcDataArrays[k];
540:                    int srcScanlineOffset = srcBandOffsets[k];
541:                    int dstScanlineOffset = dstBandOffsets[k];
542:
543:                    int revolver = 0;
544:                    int kvRevolver = 0; // to match kernel vValues
545:                    for (int j = 0; j < kh - 1; j++) {
546:                        int srcPixelOffset = srcScanlineOffset;
547:
548:                        for (int i = 0; i < dwidth; i++) {
549:                            int imageOffset = srcPixelOffset;
550:                            float f = 0.0f;
551:                            for (int v = 0; v < kw; v++) {
552:                                f += (srcData[imageOffset]) * hValues[v];
553:                                imageOffset += srcPixelStride;
554:                            }
555:                            tmpBuffer[revolver + i] = f;
556:                            srcPixelOffset += srcPixelStride;
557:                        }
558:                        revolver += dwidth;
559:                        srcScanlineOffset += srcScanlineStride;
560:                    }
561:
562:                    // srcScanlineStride already bumped by
563:                    // kh-1*scanlineStride
564:
565:                    for (int j = 0; j < dheight; j++) {
566:                        int srcPixelOffset = srcScanlineOffset;
567:                        int dstPixelOffset = dstScanlineOffset;
568:
569:                        for (int i = 0; i < dwidth; i++) {
570:                            int imageOffset = srcPixelOffset;
571:                            float f = 0.0f;
572:                            for (int v = 0; v < kw; v++) {
573:                                f += (srcData[imageOffset]) * hValues[v];
574:                                imageOffset += srcPixelStride;
575:                            }
576:                            tmpBuffer[revolver + i] = f;
577:
578:                            f = 0.0f;
579:
580:                            int b = kvRevolver + i;
581:                            for (int a = 0; a < kh; a++) {
582:                                f += tmpBuffer[b] * vValues[a];
583:                                b += dwidth;
584:                                if (b >= tmpBufferSize)
585:                                    b -= tmpBufferSize;
586:                            }
587:
588:                            dstData[dstPixelOffset] = f;
589:                            srcPixelOffset += srcPixelStride;
590:                            dstPixelOffset += dstPixelStride;
591:                        }
592:                        revolver += dwidth;
593:                        if (revolver == tmpBufferSize) {
594:                            revolver = 0;
595:                        }
596:                        kvRevolver += dwidth;
597:                        if (kvRevolver == tmpBufferSize) {
598:                            kvRevolver = 0;
599:                        }
600:                        srcScanlineOffset += srcScanlineStride;
601:                        dstScanlineOffset += dstScanlineStride;
602:                    }
603:                }
604:            }
605:
606:            protected void doubleLoop(RasterAccessor src, RasterAccessor dst) {
607:                int dwidth = dst.getWidth();
608:                int dheight = dst.getHeight();
609:                int dnumBands = dst.getNumBands();
610:
611:                double dstDataArrays[][] = dst.getDoubleDataArrays();
612:                int dstBandOffsets[] = dst.getBandOffsets();
613:                int dstPixelStride = dst.getPixelStride();
614:                int dstScanlineStride = dst.getScanlineStride();
615:
616:                double srcDataArrays[][] = src.getDoubleDataArrays();
617:                int srcBandOffsets[] = src.getBandOffsets();
618:                int srcPixelStride = src.getPixelStride();
619:                int srcScanlineStride = src.getScanlineStride();
620:
621:                double tmpBuffer[] = new double[kh * dwidth];
622:                int tmpBufferSize = kh * dwidth;
623:
624:                for (int k = 0; k < dnumBands; k++) {
625:                    double dstData[] = dstDataArrays[k];
626:                    double srcData[] = srcDataArrays[k];
627:                    int srcScanlineOffset = srcBandOffsets[k];
628:                    int dstScanlineOffset = dstBandOffsets[k];
629:
630:                    int revolver = 0;
631:                    int kvRevolver = 0; // to match kernel vValues
632:                    for (int j = 0; j < kh - 1; j++) {
633:                        int srcPixelOffset = srcScanlineOffset;
634:
635:                        for (int i = 0; i < dwidth; i++) {
636:                            int imageOffset = srcPixelOffset;
637:                            double f = 0.0;
638:                            for (int v = 0; v < kw; v++) {
639:                                f += (srcData[imageOffset]) * hValues[v];
640:                                imageOffset += srcPixelStride;
641:                            }
642:                            tmpBuffer[revolver + i] = f;
643:                            srcPixelOffset += srcPixelStride;
644:                        }
645:                        revolver += dwidth;
646:                        srcScanlineOffset += srcScanlineStride;
647:                    }
648:
649:                    // srcScanlineStride already bumped by
650:                    // kh-1*scanlineStride
651:
652:                    for (int j = 0; j < dheight; j++) {
653:                        int srcPixelOffset = srcScanlineOffset;
654:                        int dstPixelOffset = dstScanlineOffset;
655:
656:                        for (int i = 0; i < dwidth; i++) {
657:                            int imageOffset = srcPixelOffset;
658:                            double f = 0.0;
659:                            for (int v = 0; v < kw; v++) {
660:                                f += (srcData[imageOffset]) * hValues[v];
661:                                imageOffset += srcPixelStride;
662:                            }
663:                            tmpBuffer[revolver + i] = f;
664:
665:                            f = 0.0;
666:
667:                            int b = kvRevolver + i;
668:                            for (int a = 0; a < kh; a++) {
669:                                f += tmpBuffer[b] * vValues[a];
670:                                b += dwidth;
671:                                if (b >= tmpBufferSize)
672:                                    b -= tmpBufferSize;
673:                            }
674:
675:                            dstData[dstPixelOffset] = f;
676:                            srcPixelOffset += srcPixelStride;
677:                            dstPixelOffset += dstPixelStride;
678:                        }
679:                        revolver += dwidth;
680:                        if (revolver == tmpBufferSize) {
681:                            revolver = 0;
682:                        }
683:                        kvRevolver += dwidth;
684:                        if (kvRevolver == tmpBufferSize) {
685:                            kvRevolver = 0;
686:                        }
687:                        srcScanlineOffset += srcScanlineStride;
688:                        dstScanlineOffset += dstScanlineStride;
689:                    }
690:                }
691:            }
692:
693:            //     public static OpImage createTestImage(OpImageTester oit) {
694:            //         float data[] = {0.05f,0.10f,0.05f,
695:            //                         0.10f,0.20f,0.10f,
696:            //                         0.05f,0.10f,0.05f};
697:            //         KernelJAI kJAI = new KernelJAI(3,3,1,1,data);
698:            //         return new SeparableConvolveOpImage(oit.getSource(), null, null,
699:            //                                    new ImageLayout(oit.getSource()),
700:            //                                    kJAI);
701:            //     }
702:
703:            //     public static void main(String args[]) {
704:            //         String classname = "com.sun.media.jai.opimage.SeparableConvolveOpImage";
705:            //         OpImageTester.performDiagnostics(classname,args);
706:            //     }
707:        }
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