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564
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1 /**
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2 *
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3 */
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4 package digilib.image;
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5
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6 import java.io.File;
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7 import java.io.IOException;
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8 import java.io.RandomAccessFile;
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9
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10 import org.marcoschmidt.image.ImageInfo;
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11
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12 import digilib.io.ImageFile;
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13
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14 /** Simple abstract implementation of the <code>DocuImage</code> interface.
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15 * Implements only the identify method using the ImageInfo class.
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16 * @author casties
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17 *
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18 */
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19 public abstract class ImageInfoDocuImage extends DocuImageImpl {
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20
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21 /** Check image size and type and store in ImageFile f */
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22 public ImageFile identify(ImageFile imgf) throws IOException {
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23 // fileset to store the information
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24 File f = imgf.getFile();
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25 if (f == null) {
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26 throw new IOException("File not found!");
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27 }
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28 RandomAccessFile raf = new RandomAccessFile(f, "r");
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29 // set up ImageInfo object
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30 ImageInfo iif = new ImageInfo();
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31 iif.setInput(raf);
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32 iif.setCollectComments(false);
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33 iif.setDetermineImageNumber(false);
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34 logger.debug("identifying (ImageInfo) " + f);
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35 // try with ImageInfo first
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36 if (iif.check()) {
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37 ImageSize d = new ImageSize(iif.getWidth(), iif.getHeight());
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38 imgf.setSize(d);
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39 imgf.setMimetype(iif.getMimeType());
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40 //logger.debug(" format:"+iif.getFormatName());
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41 raf.close();
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42 logger.debug("image size: " + imgf.getSize());
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43 return imgf;
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44 } else {
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45 raf.close();
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46 }
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47 return null;
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48 }
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49
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50
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51 }
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