Source Code Cross Referenced for PrecinctSizeSpec.java in  » 6.0-JDK-Modules » Java-Advanced-Imaging » jj2000 » j2k » entropy » 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 » jj2000.j2k.entropy 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $RCSfile: PrecinctSizeSpec.java,v $
003:         * $Revision: 1.1 $
004:         * $Date: 2005/02/11 05:02:04 $
005:         * $State: Exp $
006:         *
007:         * Class:                   PrecinctSizeSpec
008:         *
009:         * Description:             Specification of the precinct sizes
010:         *
011:         *
012:         *
013:         * COPYRIGHT:
014:         *
015:         * This software module was originally developed by Raphaël Grosbois and
016:         * Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
017:         * Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David
018:         * Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research
019:         * Centre France S.A) in the course of development of the JPEG2000
020:         * standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
021:         * software module is an implementation of a part of the JPEG 2000
022:         * Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
023:         * Systems AB and Canon Research Centre France S.A (collectively JJ2000
024:         * Partners) agree not to assert against ISO/IEC and users of the JPEG
025:         * 2000 Standard (Users) any of their rights under the copyright, not
026:         * including other intellectual property rights, for this software module
027:         * with respect to the usage by ISO/IEC and Users of this software module
028:         * or modifications thereof for use in hardware or software products
029:         * claiming conformance to the JPEG 2000 Standard. Those intending to use
030:         * this software module in hardware or software products are advised that
031:         * their use may infringe existing patents. The original developers of
032:         * this software module, JJ2000 Partners and ISO/IEC assume no liability
033:         * for use of this software module or modifications thereof. No license
034:         * or right to this software module is granted for non JPEG 2000 Standard
035:         * conforming products. JJ2000 Partners have full right to use this
036:         * software module for his/her own purpose, assign or donate this
037:         * software module to any third party and to inhibit third parties from
038:         * using this software module for non JPEG 2000 Standard conforming
039:         * products. This copyright notice must be included in all copies or
040:         * derivative works of this software module.
041:         *
042:         * Copyright (c) 1999/2000 JJ2000 Partners.
043:         * */
044:        package jj2000.j2k.entropy;
045:
046:        import jj2000.j2k.codestream.*;
047:        import jj2000.j2k.wavelet.*;
048:        import jj2000.j2k.image.*;
049:        import jj2000.j2k.util.*;
050:        import jj2000.j2k.*;
051:
052:        import java.util.*;
053:        import com.sun.media.imageioimpl.plugins.jpeg2000.J2KImageWriteParamJava;
054:
055:        /**
056:         * This class extends ModuleSpec class for precinct partition sizes holding
057:         * purposes.
058:         *
059:         * <p>It stores the size a of precinct when precinct partition is used or not.
060:         * If precinct partition is used, we can have several packets for a given
061:         * resolution level whereas there is only one packet per resolution level if
062:         * no precinct partition is used.
063:         * */
064:        public class PrecinctSizeSpec extends ModuleSpec {
065:
066:            /** Name of the option */
067:            private static final String optName = "Cpp";
068:
069:            /** Reference to wavelet number of decomposition levels for each
070:             * tile-component.  */
071:            private IntegerSpec dls;
072:
073:            /**
074:             * Creates a new PrecinctSizeSpec object for the specified number of tiles
075:             * and components.
076:             *
077:             * @param nt The number of tiles
078:             *
079:             * @param nc The number of components
080:             *
081:             * @param type the type of the specification module i.e. tile specific,
082:             * component specific or both.
083:             *
084:             * @param dls Reference to the number of decomposition levels
085:             * specification
086:             * */
087:            public PrecinctSizeSpec(int nt, int nc, byte type, IntegerSpec dls) {
088:                super (nt, nc, type);
089:                this .dls = dls;
090:            }
091:
092:            /**
093:             * Creates a new PrecinctSizeSpec object for the specified number of tiles
094:             * and components and the J2KImageWriteParamJava instance.
095:             *
096:             * @param nt The number of tiles
097:             *
098:             * @param nc The number of components
099:             *
100:             * @param type the type of the specification module i.e. tile specific,
101:             * component specific or both.
102:             *
103:             * @param imgsrc The image source (used to get the image size)
104:             *
105:             * @param wp The J2KImageWriteParamJava instance
106:             * */
107:            public PrecinctSizeSpec(int nt, int nc, byte type,
108:                    BlkImgDataSrc imgsrc, IntegerSpec dls,
109:                    J2KImageWriteParamJava wp, String values) {
110:                super (nt, nc, type);
111:
112:                this .dls = dls;
113:
114:                // The precinct sizes are stored in a 2 elements vector array, the
115:                // first element containing a vector for the precincts width for each
116:                // resolution level and the second element containing a vector for the
117:                // precincts height for each resolution level. The precincts sizes are
118:                // specified from the highest resolution level to the lowest one
119:                // (i.e. 0).  If there are less elements than the number of
120:                // decomposition levels, the last element is used for all remaining
121:                // resolution levels (i.e. if the precincts sizes are specified only
122:                // for resolutions levels 5, 4 and 3, then the precincts size for
123:                // resolution levels 2, 1 and 0 will be the same as the size used for
124:                // resolution level 3).
125:
126:                // Boolean used to know if we were previously reading a precinct's
127:                // size or if we were reading something else.
128:                boolean wasReadingPrecinctSize = false;
129:
130:                String param = values;
131:                /*
132:                 if (values == null)
133:                 param = defaultValue;   // the default is null
134:                 */
135:                // Set precinct sizes to default i.e. 2^15 =
136:                // Markers.PRECINCT_PARTITION_DEF_SIZE
137:                Vector tmpv[] = new Vector[2];
138:                tmpv[0] = new Vector(); // ppx
139:                tmpv[0].addElement(new Integer(
140:                        Markers.PRECINCT_PARTITION_DEF_SIZE));
141:                tmpv[1] = new Vector(); // ppy
142:                tmpv[1].addElement(new Integer(
143:                        Markers.PRECINCT_PARTITION_DEF_SIZE));
144:                setDefault(tmpv);
145:
146:                if (param == null) {
147:                    // No precinct size specified in the command line so we do not try
148:                    // to parse it.
149:                    return;
150:                }
151:
152:                // Precinct partition is used : parse arguments
153:                StringTokenizer stk = new StringTokenizer(param);
154:                byte curSpecType = SPEC_DEF; // Specification type of the
155:                // current parameter
156:                boolean[] tileSpec = null; // Tiles concerned by the specification
157:                boolean[] compSpec = null; // Components concerned by the specification
158:                int i, xIdx, ci, ti;
159:
160:                boolean endOfParamList = false;
161:                String word = null; // current word
162:                Integer w, h;
163:                String errMsg = null;
164:
165:                while ((stk.hasMoreTokens() || wasReadingPrecinctSize)
166:                        && !endOfParamList) {
167:
168:                    Vector v[] = new Vector[2]; // v[0] : ppx, v[1] : ppy
169:
170:                    // We do not read the next token if we were reading a precinct's
171:                    // size argument as we have already read the next token into word.
172:                    if (!wasReadingPrecinctSize) {
173:                        word = stk.nextToken();
174:                    }
175:
176:                    wasReadingPrecinctSize = false;
177:
178:                    switch (word.charAt(0)) {
179:
180:                    case 't': // Tiles specification
181:                        tileSpec = parseIdx(word, nTiles);
182:                        if (curSpecType == SPEC_COMP_DEF) {
183:                            curSpecType = SPEC_TILE_COMP;
184:                        } else {
185:                            curSpecType = SPEC_TILE_DEF;
186:                        }
187:                        break;
188:
189:                    case 'c': // Components specification
190:                        compSpec = parseIdx(word, nComp);
191:                        if (curSpecType == SPEC_TILE_DEF) {
192:                            curSpecType = SPEC_TILE_COMP;
193:                        } else {
194:                            curSpecType = SPEC_COMP_DEF;
195:                        }
196:                        break;
197:
198:                    default:
199:                        if (!Character.isDigit(word.charAt(0))) {
200:                            errMsg = "Bad construction for parameter: " + word;
201:                            throw new IllegalArgumentException(errMsg);
202:                        }
203:
204:                        // Initialises Vector objects
205:                        v[0] = new Vector(); // ppx
206:                        v[1] = new Vector(); // ppy
207:
208:                        while (true) {
209:
210:                            // Now get the precinct dimensions
211:                            try {
212:                                // Get precinct width
213:                                w = new Integer(word);
214:
215:                                // Get next word in argument list
216:                                try {
217:                                    word = stk.nextToken();
218:                                } catch (NoSuchElementException e) {
219:                                    errMsg = "'" + optName
220:                                            + "' option : could not "
221:                                            + "parse the precinct's width";
222:                                    throw new IllegalArgumentException(errMsg);
223:
224:                                }
225:                                // Get precinct height
226:                                h = new Integer(word);
227:                                if (w.intValue() != (1 << MathUtil.log2(w
228:                                        .intValue()))
229:                                        || h.intValue() != (1 << MathUtil
230:                                                .log2(h.intValue()))) {
231:                                    errMsg = "Precinct dimensions must be powers of 2";
232:                                    throw new IllegalArgumentException(errMsg);
233:                                }
234:                            } catch (NumberFormatException e) {
235:                                errMsg = "'" + optName
236:                                        + "' option : the argument '" + word
237:                                        + "' could not be parsed.";
238:                                throw new IllegalArgumentException(errMsg);
239:                            }
240:                            // Store packet's dimensions in Vector arrays
241:                            v[0].addElement(w);
242:                            v[1].addElement(h);
243:
244:                            // Try to get the next token
245:                            if (stk.hasMoreTokens()) {
246:                                word = stk.nextToken();
247:                                if (!Character.isDigit(word.charAt(0))) {
248:                                    // The next token does not start with a digit so
249:                                    // it is not a precinct's size argument. We set
250:                                    // the wasReadingPrecinctSize booleen such that we
251:                                    // know that we don't have to read another token
252:                                    // and check for the end of the parameters list.
253:                                    wasReadingPrecinctSize = true;
254:
255:                                    if (curSpecType == SPEC_DEF) {
256:                                        setDefault(v);
257:                                    } else if (curSpecType == SPEC_TILE_DEF) {
258:                                        for (ti = tileSpec.length - 1; ti >= 0; ti--) {
259:                                            if (tileSpec[ti]) {
260:                                                setTileDef(ti, v);
261:                                            }
262:                                        }
263:                                    } else if (curSpecType == SPEC_COMP_DEF) {
264:                                        for (ci = compSpec.length - 1; ci >= 0; ci--) {
265:                                            if (compSpec[ci]) {
266:                                                setCompDef(ci, v);
267:                                            }
268:                                        }
269:                                    } else {
270:                                        for (ti = tileSpec.length - 1; ti >= 0; ti--) {
271:                                            for (ci = compSpec.length - 1; ci >= 0; ci--) {
272:                                                if (tileSpec[ti]
273:                                                        && compSpec[ci]) {
274:                                                    setTileCompVal(ti, ci, v);
275:                                                }
276:                                            }
277:                                        }
278:                                    }
279:                                    // Re-initialize
280:                                    curSpecType = SPEC_DEF;
281:                                    tileSpec = null;
282:                                    compSpec = null;
283:
284:                                    // Go back to 'normal' parsing
285:                                    break;
286:                                } else {
287:                                    // Next token starts with a digit so read it
288:                                }
289:                            } else {
290:                                // We have reached the end of the parameters list so
291:                                // we store the last precinct's sizes and we stop
292:                                if (curSpecType == SPEC_DEF) {
293:                                    setDefault(v);
294:                                } else if (curSpecType == SPEC_TILE_DEF) {
295:                                    for (ti = tileSpec.length - 1; ti >= 0; ti--) {
296:                                        if (tileSpec[ti]) {
297:                                            setTileDef(ti, v);
298:                                        }
299:                                    }
300:                                } else if (curSpecType == SPEC_COMP_DEF) {
301:                                    for (ci = compSpec.length - 1; ci >= 0; ci--) {
302:                                        if (compSpec[ci]) {
303:                                            setCompDef(ci, v);
304:                                        }
305:                                    }
306:                                } else {
307:                                    for (ti = tileSpec.length - 1; ti >= 0; ti--) {
308:                                        for (ci = compSpec.length - 1; ci >= 0; ci--) {
309:                                            if (tileSpec[ti] && compSpec[ci]) {
310:                                                setTileCompVal(ti, ci, v);
311:                                            }
312:                                        }
313:                                    }
314:                                }
315:                                endOfParamList = true;
316:                                break;
317:                            }
318:                        } // while (true)
319:                        break;
320:                    } // switch
321:                } // while
322:            }
323:
324:            /**
325:             * Returns the precinct partition width in component 'n' and tile 't' at
326:             * resolution level 'rl'. If the tile index is equal to -1 or if the
327:             * component index is equal to -1 it means that those should not be taken
328:             * into account.
329:             *
330:             * @param t The tile index, in raster scan order. Specify -1 if it is not
331:             * a specific tile.
332:             *
333:             * @param c The component index. Specify -1 if it is not a specific
334:             * component.
335:             *
336:             * @param rl The resolution level
337:             *
338:             * @return The precinct partition width in component 'c' and tile 't' at
339:             * resolution level 'rl'.
340:             * */
341:            public int getPPX(int t, int c, int rl) {
342:                int mrl, idx;
343:                Vector[] v = null;
344:                boolean tileSpecified = (t != -1 ? true : false);
345:                boolean compSpecified = (c != -1 ? true : false);
346:
347:                // Get the maximum number of decomposition levels and the object
348:                // (Vector array) containing the precinct dimensions (width and
349:                // height) for the specified (or not) tile/component
350:                if (tileSpecified && compSpecified) {
351:                    mrl = ((Integer) dls.getTileCompVal(t, c)).intValue();
352:                    v = (Vector[]) getTileCompVal(t, c);
353:                } else if (tileSpecified && !compSpecified) {
354:                    mrl = ((Integer) dls.getTileDef(t)).intValue();
355:                    v = (Vector[]) getTileDef(t);
356:                } else if (!tileSpecified && compSpecified) {
357:                    mrl = ((Integer) dls.getCompDef(c)).intValue();
358:                    v = (Vector[]) getCompDef(c);
359:                } else {
360:                    mrl = ((Integer) dls.getDefault()).intValue();
361:                    v = (Vector[]) getDefault();
362:                }
363:                idx = mrl - rl;
364:                if (v[0].size() > idx) {
365:                    return ((Integer) v[0].elementAt(idx)).intValue();
366:                } else {
367:                    return ((Integer) v[0].elementAt(v[0].size() - 1))
368:                            .intValue();
369:                }
370:            }
371:
372:            /**
373:             * Returns the precinct partition height in component 'n' and tile 't' at
374:             * resolution level 'rl'. If the tile index is equal to -1 or if the
375:             * component index is equal to -1 it means that those should not be taken
376:             * into account.
377:             *
378:             * @param t The tile index, in raster scan order. Specify -1 if it is not
379:             * a specific tile.
380:             *
381:             * @param c The component index. Specify -1 if it is not a specific
382:             * component.
383:             *
384:             * @param rl The resolution level.
385:             *
386:             * @return The precinct partition width in component 'n' and tile 't' at
387:             * resolution level 'rl'.
388:             * */
389:            public int getPPY(int t, int c, int rl) {
390:                int mrl, idx;
391:                Vector[] v = null;
392:                boolean tileSpecified = (t != -1 ? true : false);
393:                boolean compSpecified = (c != -1 ? true : false);
394:
395:                // Get the maximum number of decomposition levels and the object
396:                // (Vector array) containing the precinct dimensions (width and
397:                // height) for the specified (or not) tile/component
398:                if (tileSpecified && compSpecified) {
399:                    mrl = ((Integer) dls.getTileCompVal(t, c)).intValue();
400:                    v = (Vector[]) getTileCompVal(t, c);
401:                } else if (tileSpecified && !compSpecified) {
402:                    mrl = ((Integer) dls.getTileDef(t)).intValue();
403:                    v = (Vector[]) getTileDef(t);
404:                } else if (!tileSpecified && compSpecified) {
405:                    mrl = ((Integer) dls.getCompDef(c)).intValue();
406:                    v = (Vector[]) getCompDef(c);
407:                } else {
408:                    mrl = ((Integer) dls.getDefault()).intValue();
409:                    v = (Vector[]) getDefault();
410:                }
411:                idx = mrl - rl;
412:                if (v[1].size() > idx) {
413:                    return ((Integer) v[1].elementAt(idx)).intValue();
414:                } else {
415:                    return ((Integer) v[1].elementAt(v[1].size() - 1))
416:                            .intValue();
417:                }
418:            }
419:        }
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