288             throw new IndexOutOfBoundsException("imageIndex out of bounds!");
 289         }
 290 
 291         readMetadata();
 292 
 293         initializeFromMetadata();
 294     }
 295 
 296     // Stream must be positioned at start of IFD for 'currIndex'
 297     private void readMetadata() throws IIOException {
 298         if (stream == null) {
 299             throw new IllegalStateException("Input not set!");
 300         }
 301 
 302         if (imageMetadata != null) {
 303             return;
 304         }
 305         try {
 306             // Create an object to store the image metadata
 307             List<TIFFTagSet> tagSets;

 308             if (imageReadParam instanceof TIFFImageReadParam) {
 309                 tagSets
 310                         = ((TIFFImageReadParam) imageReadParam).getAllowedTagSets();

 311             } else {
 312                 tagSets = new ArrayList<TIFFTagSet>(1);
 313                 tagSets.add(BaselineTIFFTagSet.getInstance());
 314             }
 315 
 316             this.imageMetadata = new TIFFImageMetadata(tagSets);
 317             imageMetadata.initializeFromStream(stream, ignoreMetadata);

 318         } catch (IIOException iioe) {
 319             throw iioe;
 320         } catch (IOException ioe) {
 321             throw new IIOException("I/O error reading image metadata!", ioe);
 322         }
 323     }
 324 
 325     private int getWidth() {
 326         return this.width;
 327     }
 328 
 329     private int getHeight() {
 330         return this.height;
 331     }
 332 
 333     // Returns tile width if image is tiled, else image width
 334     private int getTileOrStripWidth() {
 335         TIFFField f
 336                 = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_TILE_WIDTH);
 337         return (f == null) ? getWidth() : f.getAsInt(0);

 288             throw new IndexOutOfBoundsException("imageIndex out of bounds!");
 289         }
 290 
 291         readMetadata();
 292 
 293         initializeFromMetadata();
 294     }
 295 
 296     // Stream must be positioned at start of IFD for 'currIndex'
 297     private void readMetadata() throws IIOException {
 298         if (stream == null) {
 299             throw new IllegalStateException("Input not set!");
 300         }
 301 
 302         if (imageMetadata != null) {
 303             return;
 304         }
 305         try {
 306             // Create an object to store the image metadata
 307             List<TIFFTagSet> tagSets;
 308             boolean readUnknownTags = false;
 309             if (imageReadParam instanceof TIFFImageReadParam) {
 310                 TIFFImageReadParam tp = (TIFFImageReadParam)imageReadParam;
 311                 tagSets = tp.getAllowedTagSets();
 312                 readUnknownTags = tp.getReadUnknownTags();
 313             } else {
 314                 tagSets = new ArrayList<TIFFTagSet>(1);
 315                 tagSets.add(BaselineTIFFTagSet.getInstance());
 316             }
 317 
 318             this.imageMetadata = new TIFFImageMetadata(tagSets);
 319             imageMetadata.initializeFromStream(stream, ignoreMetadata,
 320                                                readUnknownTags);
 321         } catch (IIOException iioe) {
 322             throw iioe;
 323         } catch (IOException ioe) {
 324             throw new IIOException("I/O error reading image metadata!", ioe);
 325         }
 326     }
 327 
 328     private int getWidth() {
 329         return this.width;
 330     }
 331 
 332     private int getHeight() {
 333         return this.height;
 334     }
 335 
 336     // Returns tile width if image is tiled, else image width
 337     private int getTileOrStripWidth() {
 338         TIFFField f
 339                 = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_TILE_WIDTH);
 340         return (f == null) ? getWidth() : f.getAsInt(0);