Examples of com.sun.image.codec.jpeg.JPEGImageEncoder

com.sun.image.codec.jpeg.JPEGImageEncoder
JPEGImageEncoder encodes buffers of image data into JPEG data streams. Users of this interface are required to provide image data in a Raster or a BufferedImage, set the necessary parameters in the JPEGEncodeParams object and successfully open the OutputStream that is the destination of the encoded JPEG stream. The JPEGImageEncoder interface can encode image data into interchange, and abbreviated JPEG data streams that are written to the OutputStream provided to the encoder.
Note that the classes in the com.sun.image.codec.jpeg package are not part of the core Java APIs. They are a part of Sun's JDK and JRE distributions. Although other licensees may choose to distribute these classes, developers cannot depend on their availability in non-Sun implementations. We expect that equivalent functionality will eventually be available in a core API or standard extension.
@see JPEGCodec @see JPEGEncodeParam @see Raster @see BufferedImage @see OutputStream


  JPEGEncodeParam j2dEP = convertToJ2DJPEGEncodeParam(paramList, sm) ;
        ((JPEGParam)j2dEP).setWidth(ras.getWidth()) ; 
  ((JPEGParam)j2dEP).setHeight(ras.getHeight()) ;


  JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(baos, j2dEP) ;
  encoder.encode(ras) ;


  byte[] data = baos.toByteArray() ;


  ObjectOutputStream oos = new ObjectOutputStream(outputStream) ;
  oos.writeFloat(paramList.getFloatParameter("quality"));

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    new_h = Math.round(old_h / tempdouble); // 计算新图高
    BufferedImage target = new BufferedImage(new_w, new_h,
        BufferedImage.TYPE_INT_RGB);
    target.getGraphics().drawImage(src, 0, 0, new_w, new_h, null);
    FileOutputStream newImage = new FileOutputStream(targetImg);
    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(newImage);
    encoder.encode(target);
    newImage.close();
  }

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                filter.filter(original, scaled);


                // JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);


                ByteArrayOutputStream bstream = new ByteArrayOutputStream();
                JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bstream);
                encoder.encode(scaled);
                out.write(bstream.toByteArray());


                out.flush();
            } catch (ImageFormatException e) {
                throw new ProcessingException("Error reading the image. Note that only JPEG images are currently supported.");

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            handler.error(new TranscoderException(
                Messages.formatMessage("jpeg.unspecifiedQuality", null)));
            quality = 1f;
        }
        try {
            JPEGImageEncoder jpegEncoder = JPEGCodec.createJPEGEncoder(ostream);
            JPEGEncodeParam params = JPEGCodec.getDefaultJPEGEncodeParam(img);
            params.setQuality(quality, true);
            float PixSzMM = userAgent.getPixelUnitToMillimeter();
            int PixSzInch = (int)(25.4/PixSzMM+0.5);
            params.setDensityUnit(JPEGEncodeParam.DENSITY_UNIT_DOTS_INCH);
            params.setXDensity(PixSzInch);
            params.setYDensity(PixSzInch);
            jpegEncoder.encode(img, params);
        } catch (IOException ex) {
            throw new TranscoderException(ex);
        }
    }

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            AffineTransformOp filter = new AffineTransformOp(getTransform(ow, oh, w, h), AffineTransformOp.TYPE_BILINEAR);
            WritableRaster scaled = filter.createCompatibleDestRaster(original);
            filter.filter(original, scaled);
            // JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
            ByteArrayOutputStream bstream = new ByteArrayOutputStream();
            JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bstream);
            encoder.encode(scaled);
            in.close();
            out.write(bstream.toByteArray());
            out.flush();        
        } catch (ImageFormatException e) {
            throw new ProcessingException("Error reading the image. Note that only JPEG images are currently supported.");

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    //img = (BufferedImage) createImage(srcimg.width,srcimg.height);
    for (int i = 0; i < srcimg.width; i++)
      for (int j = 0; j < srcimg.height; j++)
        img.setRGB(i, j, srcimg.pixels[j * srcimg.width + i]);
    try {
      JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
      JPEGEncodeParam encpar = encoder.getDefaultJPEGEncodeParam(img);
      encpar.setQuality(1f, false);
      encoder.setJPEGEncodeParam(encpar);
      encoder.encode(img);
    } catch (FileNotFoundException e) {
      System.out.println(e);
    } catch (IOException ioe) {
      System.out.println(ioe);
    }

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  }
  
  public static byte[] ImageToByteArray(String sImg) throws ImageFormatException, IOException {
    BufferedImage img = ImageIO.read(new File(sImg));
    ByteArrayOutputStream os = new ByteArrayOutputStream();
      JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(os);
      encoder.encode(img);


      return os.toByteArray();
  }

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    else if (type.equalsIgnoreCase("gif")) {
      GifEncoder gifEncoder = new GifEncoder(img);
      gifEncoder.encode(stream);
    }
    else if (type.equalsIgnoreCase("jpg") || type.equalsIgnoreCase("jpeg")) {
      JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(stream);
      JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(img);
      param.setQuality(quality, false);
      encoder.setJPEGEncodeParam(param);
      encoder.encode(img);
    }
    else {
      throw new IOException("Unsupported image format: " + type);
    }
    stream.flush();

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                if (null != colorFilter) {
                    colorFilter.filter(currentImage, currentImage);
                }


                if (!handleJVMBug()) {
                    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
                    encoder.encode(currentImage);
                } else {
                    ByteArrayOutputStream bstream = new ByteArrayOutputStream();
                    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bstream);
                    encoder.encode(currentImage);
                    out.write(bstream.toByteArray());
                }


                out.flush();
            } catch (ImageFormatException e) {

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    g2d.dispose();


    // In JPG konvertieren und ausgeben
    res.setContentType("image/jpeg");
    res.setHeader("Cache-Control", "no-cache");
    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
    encoder.encode(bImage);
  }

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