Esempio n. 1
0
  public BufferedImage extractUsingCompositor() throws IOException, DjatokaException {
    boolean useRegion = false;
    int left = 0;
    int top = 0;
    int width = 50;
    int height = 50;
    boolean useleftDouble = false;
    Double leftDouble = 0.0;
    boolean usetopDouble = false;
    Double topDouble = 0.0;
    boolean usewidthDouble = false;
    Double widthDouble = 0.0;
    boolean useheightDouble = false;
    Double heightDouble = 0.0;

    if (params.getRegion() != null) {
      StringTokenizer st = new StringTokenizer(params.getRegion(), "{},");
      String token;
      // top
      if ((token = st.nextToken()).contains(".")) {
        topDouble = Double.parseDouble(token);
        usetopDouble = true;
      } else top = Integer.parseInt(token);
      // left
      if ((token = st.nextToken()).contains(".")) {
        leftDouble = Double.parseDouble(token);
        useleftDouble = true;
      } else left = Integer.parseInt(token);
      // height
      if ((token = st.nextToken()).contains(".")) {
        heightDouble = Double.parseDouble(token);
        useheightDouble = true;
      } else height = Integer.parseInt(token);
      // width
      if ((token = st.nextToken()).contains(".")) {
        widthDouble = Double.parseDouble(token);
        usewidthDouble = true;
      } else width = Integer.parseInt(token);

      useRegion = true;
    }

    if (is != null) {
      File f = File.createTempFile("tmp", ".jp2");
      f.deleteOnExit();
      FileOutputStream fos = new FileOutputStream(f);
      sourceFile = f.getAbsolutePath();
      IOUtils.copyStream(is, fos);
    }

    Kdu_simple_file_source raw_src = null; // Must be disposed last
    Jp2_family_src family_src = new Jp2_family_src(); // Dispose last
    Jpx_source wrapped_src = new Jpx_source(); // Dispose in the middle
    Kdu_region_compositor compositor = null; // Must be disposed first
    BufferedImage image = null;

    try {
      family_src.Open(sourceFile);
      int success = wrapped_src.Open(family_src, true);
      if (success < 0) {
        family_src.Close();
        wrapped_src.Close();
        raw_src = new Kdu_simple_file_source(sourceFile);
      }

      compositor = new Kdu_region_compositor();
      if (raw_src != null) compositor.Create(raw_src);
      else compositor.Create(wrapped_src);

      Kdu_dims imageDimensions = new Kdu_dims();
      compositor.Get_total_composition_dims(imageDimensions);
      Kdu_coords imageSize = imageDimensions.Access_size();
      Kdu_coords imagePosition = imageDimensions.Access_pos();

      if (useleftDouble)
        left = imagePosition.Get_x() + (int) Math.round(leftDouble * imageSize.Get_x());
      if (usetopDouble)
        top = imagePosition.Get_y() + (int) Math.round(topDouble * imageSize.Get_y());
      if (useheightDouble) height = (int) Math.round(heightDouble * imageSize.Get_y());
      if (usewidthDouble) width = (int) Math.round(widthDouble * imageSize.Get_x());

      if (useRegion) {
        imageSize.Set_x(width);
        imageSize.Set_y(height);
        imagePosition.Set_x(left);
        imagePosition.Set_y(top);
      }

      int reduce = 1 << params.getLevelReductionFactor();
      imageSize.Set_x(imageSize.Get_x());
      imageSize.Set_y(imageSize.Get_y());
      imagePosition.Set_x(imagePosition.Get_x() / reduce - (1 / reduce - 1) / 2);
      imagePosition.Set_y(imagePosition.Get_y() / reduce - (1 / reduce - 1) / 2);

      Kdu_dims viewDims = new Kdu_dims();
      viewDims.Assign(imageDimensions);
      viewDims.Access_size().Set_x(imageSize.Get_x());
      viewDims.Access_size().Set_y(imageSize.Get_y());
      compositor.Add_compositing_layer(0, viewDims, viewDims);

      if (params.getRotationDegree() == 90) compositor.Set_scale(true, false, true, 1.0F);
      else if (params.getRotationDegree() == 180) compositor.Set_scale(false, true, true, 1.0F);
      else if (params.getRotationDegree() == 270) compositor.Set_scale(true, true, false, 1.0F);
      else compositor.Set_scale(false, false, false, 1.0F);

      compositor.Get_total_composition_dims(viewDims);
      Kdu_coords viewSize = viewDims.Access_size();
      compositor.Set_buffer_surface(viewDims);

      int[] imgBuffer = new int[viewSize.Get_x() * viewSize.Get_y()];
      Kdu_compositor_buf compositorBuffer = compositor.Get_composition_buffer(viewDims);
      int regionBufferSize = 0;
      int[] kduBuffer = null;
      Kdu_dims newRegion = new Kdu_dims();
      while (compositor.Process(100000, newRegion)) {
        Kdu_coords newOffset = newRegion.Access_pos();
        Kdu_coords newSize = newRegion.Access_size();
        newOffset.Subtract(viewDims.Access_pos());

        int newPixels = newSize.Get_x() * newSize.Get_y();
        if (newPixels == 0) continue;
        if (newPixels > regionBufferSize) {
          regionBufferSize = newPixels;
          kduBuffer = new int[regionBufferSize];
        }

        compositorBuffer.Get_region(newRegion, kduBuffer);
        int imgBuffereIdx = newOffset.Get_x() + newOffset.Get_y() * viewSize.Get_x();
        int kduBufferIdx = 0;
        int xDiff = viewSize.Get_x() - newSize.Get_x();
        for (int j = 0; j < newSize.Get_y(); j++, imgBuffereIdx += xDiff) {
          for (int i = 0; i < newSize.Get_x(); i++) {
            imgBuffer[imgBuffereIdx++] = kduBuffer[kduBufferIdx++];
          }
        }
      }
      if (params.getRotationDegree() == 90 || params.getRotationDegree() == 270)
        image = new BufferedImage(imageSize.Get_y(), imageSize.Get_x(), BufferedImage.TYPE_INT_RGB);
      else
        image = new BufferedImage(imageSize.Get_x(), imageSize.Get_y(), BufferedImage.TYPE_INT_RGB);
      image.setRGB(0, 0, viewSize.Get_x(), viewSize.Get_y(), imgBuffer, 0, viewSize.Get_x());

      if (compositor != null) compositor.Native_destroy();
      wrapped_src.Native_destroy();
      family_src.Native_destroy();
      if (raw_src != null) raw_src.Native_destroy();

      return image;
    } catch (KduException e) {
      e.printStackTrace();
      throw new DjatokaException(e);
    } catch (Exception e) {
      e.printStackTrace();
      throw new DjatokaException(e);
    }
  }
Esempio n. 2
0
  public BufferedImage extract() throws DjatokaException {
    boolean useRegion = false;
    int left = 0;
    int top = 0;
    int width = 50;
    int height = 50;
    boolean useleftDouble = false;
    Double leftDouble = 0.0;
    boolean usetopDouble = false;
    Double topDouble = 0.0;
    boolean usewidthDouble = false;
    Double widthDouble = 0.0;
    boolean useheightDouble = false;
    Double heightDouble = 0.0;

    if (params.getRegion() != null) {
      StringTokenizer st = new StringTokenizer(params.getRegion(), "{},");
      String token;
      // top
      if ((token = st.nextToken()).contains(".")) {
        topDouble = Double.parseDouble(token);
        usetopDouble = true;
      } else top = Integer.parseInt(token);
      // left
      if ((token = st.nextToken()).contains(".")) {
        leftDouble = Double.parseDouble(token);
        useleftDouble = true;
      } else left = Integer.parseInt(token);
      // height
      if ((token = st.nextToken()).contains(".")) {
        heightDouble = Double.parseDouble(token);
        useheightDouble = true;
      } else height = Integer.parseInt(token);
      // width
      if ((token = st.nextToken()).contains(".")) {
        widthDouble = Double.parseDouble(token);
        usewidthDouble = true;
      } else width = Integer.parseInt(token);

      useRegion = true;
    }

    try {
      if (is != null) {
        File f = File.createTempFile("tmp", ".jp2");
        f.deleteOnExit();
        FileOutputStream fos = new FileOutputStream(f);
        sourceFile = f.getAbsolutePath();
        IOUtils.copyStream(is, fos);
        is.close();
        fos.close();
      }
    } catch (IOException e) {
      throw new DjatokaException(e);
    }

    try {
      Jp2_source inputSource = new Jp2_source();
      Kdu_compressed_source input = null;
      Jp2_family_src jp2_family_in = new Jp2_family_src();
      Jp2_locator loc = new Jp2_locator();
      jp2_family_in.Open(sourceFile, true);
      inputSource.Open(jp2_family_in, loc);
      inputSource.Read_header();
      input = inputSource;

      Kdu_codestream codestream = new Kdu_codestream();
      codestream.Create(input);
      Kdu_channel_mapping channels = new Kdu_channel_mapping();

      if (inputSource.Exists()) channels.Configure(inputSource, false);
      else channels.Configure(codestream);
      int ref_component = channels.Get_source_component(0);
      Kdu_coords ref_expansion = getReferenceExpansion(ref_component, channels, codestream);
      Kdu_dims image_dims = new Kdu_dims();
      codestream.Get_dims(ref_component, image_dims);
      Kdu_coords imageSize = image_dims.Access_size();
      Kdu_coords imagePosition = image_dims.Access_pos();

      if (useleftDouble)
        left = imagePosition.Get_x() + (int) Math.round(leftDouble * imageSize.Get_x());
      if (usetopDouble)
        top = imagePosition.Get_y() + (int) Math.round(topDouble * imageSize.Get_y());
      if (useheightDouble) height = (int) Math.round(heightDouble * imageSize.Get_y());
      if (usewidthDouble) width = (int) Math.round(widthDouble * imageSize.Get_x());

      if (useRegion) {
        imageSize.Set_x(width);
        imageSize.Set_y(height);
        imagePosition.Set_x(left);
        imagePosition.Set_y(top);
      }

      int reduce = 1 << params.getLevelReductionFactor();
      imageSize.Set_x(imageSize.Get_x() * ref_expansion.Get_x());
      imageSize.Set_y(imageSize.Get_y() * ref_expansion.Get_y());
      imagePosition.Set_x(
          imagePosition.Get_x() * ref_expansion.Get_x() / reduce
              - ((ref_expansion.Get_x() / reduce - 1) / 2));
      imagePosition.Set_y(
          imagePosition.Get_y() * ref_expansion.Get_y() / reduce
              - ((ref_expansion.Get_y() / reduce - 1) / 2));

      Kdu_dims view_dims = new Kdu_dims();
      view_dims.Assign(image_dims);
      view_dims.Access_size().Set_x(imageSize.Get_x());
      view_dims.Access_size().Set_y(imageSize.Get_y());

      int region_buf_size = imageSize.Get_x() * imageSize.Get_y();
      int[] region_buf = new int[region_buf_size];
      Kdu_region_decompressor decompressor = new Kdu_region_decompressor();
      decompressor.Start(
          codestream,
          channels,
          -1,
          params.getLevelReductionFactor(),
          16384,
          image_dims,
          ref_expansion,
          new Kdu_coords(1, 1),
          false,
          Kdu_global.KDU_WANT_OUTPUT_COMPONENTS);

      Kdu_dims new_region = new Kdu_dims();
      Kdu_dims incomplete_region = new Kdu_dims();
      Kdu_coords viewSize = view_dims.Access_size();
      incomplete_region.Assign(image_dims);

      int[] imgBuffer = new int[viewSize.Get_x() * viewSize.Get_y()];
      int[] kduBuffer = null;
      while (decompressor.Process(
          region_buf,
          image_dims.Access_pos(),
          0,
          0,
          region_buf_size,
          incomplete_region,
          new_region)) {
        Kdu_coords newOffset = new_region.Access_pos();
        Kdu_coords newSize = new_region.Access_size();
        newOffset.Subtract(view_dims.Access_pos());

        kduBuffer = region_buf;
        int imgBuffereIdx = newOffset.Get_x() + newOffset.Get_y() * viewSize.Get_x();
        int kduBufferIdx = 0;
        int xDiff = viewSize.Get_x() - newSize.Get_x();
        for (int j = 0; j < newSize.Get_y(); j++, imgBuffereIdx += xDiff) {
          for (int i = 0; i < newSize.Get_x(); i++) {
            imgBuffer[imgBuffereIdx++] = kduBuffer[kduBufferIdx++];
          }
        }
      }

      BufferedImage image =
          new BufferedImage(imageSize.Get_x(), imageSize.Get_y(), BufferedImage.TYPE_INT_RGB);
      image.setRGB(0, 0, viewSize.Get_x(), viewSize.Get_y(), imgBuffer, 0, viewSize.Get_x());

      if (params.getRotationDegree() > 0) {
        image = ImageProcessingUtils.rotate(image, params.getRotationDegree());
      }

      decompressor.Native_destroy();
      channels.Native_destroy();
      if (codestream.Exists()) codestream.Destroy();
      inputSource.Native_destroy();
      input.Native_destroy();
      jp2_family_in.Native_destroy();

      return image;
    } catch (KduException e) {
      e.printStackTrace();
      throw new DjatokaException(e);
    } catch (Exception e) {
      e.printStackTrace();
      throw new DjatokaException(e);
    }
  }