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/home/eko/MUBench/MUBench/checkouts/jmrtd/51/original-src/sos/mrtd/PassportService.java

readFace()

class PassportService {
   /**
    * Reads the face of the passport holder.
    * 
    * @return the first face found on the passport
    * 
    * @throws IOException if something goes wrong
    */
   public BufferedImage readFace() throws IOException {
      byte[] tag = { 0x5F, 0x2E }; 
      byte[] facialRecordData = (byte[])readObject(PassportFileService.EF_DG2, tag).getValueAsBytes();
      if (facialRecordData == null) {
         System.out.println("DEBUG: facialRecordData == null");
      }
      DataInputStream in = new DataInputStream(new ByteArrayInputStream(facialRecordData));
      /* Facial Record Header (14) */
      in.skip(4); // 'F', 'A', 'C', 0
      in.skip(4); // version in ascii (e.g. "010")
      long length = in.readInt() & 0x000000FFFFFFFFL;
      int faceCount = in.readUnsignedShort();
      for (int face = 0; face < faceCount; face++) {
         /* Facial Information (20) */
         long faceImageBlockLength = in.readInt() & 0x00000000FFFFFFFFL;
         int featurePointCount = in.readUnsignedShort();
         byte gender = in.readByte();
         byte eyeColor = in.readByte();
         byte hairColor = in.readByte();
         long featureMask = in.readUnsignedByte();
         featureMask = (featureMask << 16) | in.readUnsignedShort();
         short expression = in.readShort();
         long poseAngle = in.readUnsignedByte();
         poseAngle = (poseAngle << 16) | in.readUnsignedShort();
         long poseAngleUncertainty = in.readUnsignedByte();
         poseAngleUncertainty = (poseAngleUncertainty << 16) | in.readUnsignedShort();
         /* Feature Point(s) (optional) (8 * featurePointCount) */
         for (int i = 0; i < featurePointCount; i++) {
            byte featureType = in.readByte();
            byte featurePoint = in.readByte();
            int x = in.readUnsignedShort();
            int y = in.readUnsignedShort();
            in.skip(2); // 2 bytes reserved
         }
         /* Image Information */
         byte faceImageType = in.readByte();
         byte imageDataType = in.readByte();
         int width = in.readUnsignedShort();
         int height = in.readUnsignedShort();
         byte imageColorSpace = in.readByte();
         int sourceType = in.readUnsignedByte();
         int deviceType = in.readUnsignedShort();
         int quality = in.readUnsignedShort();
         /* Read JPEG2000 data */
         ImageInputStream iis = ImageIO.createImageInputStream(in);
         Iterator readers = ImageIO.getImageReadersByMIMEType("image/jpeg2000");
         if (!readers.hasNext()) {
            throw new IllegalStateException("No jpeg 2000 readers");
         }
         ImageReader reader = (ImageReader)readers.next();
         reader.setInput(iis);
         ImageReadParam pm = reader.getDefaultReadParam();
         pm.setSourceRegion(new Rectangle(0, 0, width, height));
         BufferedImage image = reader.read(0, pm);
         return image; // FIXME: return all images, instead of only the first one :)
      }
      return null;
   }
}