Esempio n. 1
0
  static byte[] readStream(InputStream input) throws IOException {
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    int read;
    byte[] buffer = new byte[256];

    while ((read = input.read(buffer, 0, 256)) != -1) {
      bytes.write(buffer, 0, read);
    }

    return bytes.toByteArray();
  }
Esempio n. 2
0
  private IFD writeCMYKImage(ImageOutputStream out, BufferedImage image, TIFFImageWriteParam param)
      throws IOException {
    try {
      int width = image.getWidth();
      int height = image.getHeight();

      IFD ifd = new IFD(); // entries need to be in tag order !

      ifd.add(new DEFactory.NewSubfileTypeDE(2)); // 254 single page of multipage file
      ifd.add(new DEFactory.ImageWidthDE(width)); // 256
      ifd.add(new DEFactory.ImageLengthDE(height)); // 257

      DEFactory.BitsPerSampleDE bpss = new DEFactory.BitsPerSampleDE(4);
      bpss.setBitsPerSample(0, 8); // cyan
      bpss.setBitsPerSample(1, 8); // magneta
      bpss.setBitsPerSample(2, 8); // yellow
      bpss.setBitsPerSample(3, 8); // key (black)
      ifd.add(bpss); // 258

      ifd.add(new DEFactory.CompressionDE(NOCOMPRESSION)); // 259
      ifd.add(new DEFactory.PhotometricInterpretationDE(CMYK)); // 262

      int maxrps, maxstripes; // max RowsPerStrip
      if ((1 << 13) <= width) {
        maxrps = 1;
        maxstripes = height; // one row per strip
      } else {
        maxrps = (1 << 13) / width;
        maxstripes = (height + maxrps - 1) / maxrps;
      }

      DEFactory.StripOffsetsDE offsets = new DEFactory.StripOffsetsDE(maxstripes);
      ifd.add(offsets); // 273
      ifd.add(new DEFactory.SamplesPerPixelDE(4)); // 277
      ifd.add(new DEFactory.RowsPerStripDE(maxrps)); // 278
      DEFactory.StripByteCountsDE counts = new DEFactory.StripByteCountsDE(maxstripes);
      ifd.add(counts); // 279

      if (param == null) {
        ifd.add(new DEFactory.XResolutionDE(72.0)); // 282
        ifd.add(new DEFactory.YResolutionDE(72.0)); // 283
      } else {
        ifd.add(new DEFactory.XResolutionDE(param.getXResolution())); // 282
        ifd.add(new DEFactory.YResolutionDE(param.getYResolution())); // 283
      }
      ifd.add(new DEFactory.ResolutionUnitDE(Inch)); // 296

      int index = 0;
      for (int y = 0; y < height; y += maxrps) {
        /*
        Assume rgb image.

        Each strip: evaluate c m y k colour
                    save in byte array
                    write to image file
        */

        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        for (int i = 0; i < maxrps; i++) {
          if ((y + i) == height) {
            break;
          } // last strip might have less rows
          for (int x = 0; x < width; x++) {
            int c = image.getRGB(x, y + i);

            int R = (c >> 16) & 0x00FF;
            int G = (c >> 8) & 0x00FF;
            int B = (c) & 0x00FF;

            if ((R == 255) && (G == 255) && (B == 255)) {
              baos.write(0);
              baos.write(0);
              baos.write(0);
              baos.write(0);
            } else {
              double C = 1.0 - R / 255.0;
              double M = 1.0 - G / 255.0;
              double Y = 1.0 - B / 255.0;

              double K = C;
              if (M < K) {
                K = M;
              }
              if (Y < K) {
                K = Y;
              }

              C = ((C - K) / (1.0 - K)) * 255.0;
              M = ((M - K) / (1.0 - K)) * 255.0;
              Y = ((Y - K) / (1.0 - K)) * 255.0;
              K *= 255.0;

              baos.write((int) C);
              baos.write((int) M);
              baos.write((int) Y);
              baos.write((int) K);
            }
          }
        }
        baos.close();

        byte[] data = baos.toByteArray();
        counts.setCount(index, data.length); // update ifd strip counter array
        offsets.setOffset(index, out.getStreamPosition()); // update ifd image data offset array
        out.write(data); // write to image stream

        index++;
      }
      return ifd;
    } catch (Exception e) {
      e.printStackTrace();
      throw new IOException(getClass().getName() + ".writeCMYKImage:\n\t" + e.getMessage());
    }
  }