Examples with JPEGEncodeParam com.sun.image.codec.jpeg.JPEGEncodeParam used on opensource projects

Example 1 with JPEGEncodeParam

use of com.sun.image.codec.jpeg.JPEGEncodeParam in project my_curd by qinyou.

the class ImageResize method resize.

/**
 * 缩放gif图片
 *
 * @param originalFile 原图片
 * @param resizedFile  缩放后的图片
 * @param newWidth     宽度
 * @param quality      缩放比例 (等比例)
 * @throws IOException
 */
private static void resize(File originalFile, File resizedFile, int newWidth, float quality) {
    if (quality < 0 || quality > 1) {
        throw new IllegalArgumentException("Quality has to be between 0 and 1");
    }
    FileOutputStream out = null;
    try {
        ImageIcon ii = new ImageIcon(originalFile.getCanonicalPath());
        Image i = ii.getImage();
        Image resizedImage = null;
        int iWidth = i.getWidth(null);
        int iHeight = i.getHeight(null);
        if (iWidth > iHeight) {
            resizedImage = i.getScaledInstance(newWidth, (newWidth * iHeight) / iWidth, Image.SCALE_SMOOTH);
        } else {
            resizedImage = i.getScaledInstance((newWidth * iWidth) / iHeight, newWidth, Image.SCALE_SMOOTH);
        }
        // This code ensures that all the pixels in the image are loaded.
        Image temp = new ImageIcon(resizedImage).getImage();
        // Create the buffered image.
        BufferedImage bufferedImage = new BufferedImage(temp.getWidth(null), temp.getHeight(null), BufferedImage.TYPE_INT_RGB);
        // Copy image to buffered image.
        Graphics g = bufferedImage.createGraphics();
        // Clear background and paint the image.
        g.setColor(Color.white);
        g.fillRect(0, 0, temp.getWidth(null), temp.getHeight(null));
        g.drawImage(temp, 0, 0, null);
        g.dispose();
        // Soften.
        float softenFactor = 0.05f;
        float[] softenArray = { 0, softenFactor, 0, softenFactor, 1 - (softenFactor * 4), softenFactor, 0, softenFactor, 0 };
        Kernel kernel = new Kernel(3, 3, softenArray);
        ConvolveOp cOp = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);
        bufferedImage = cOp.filter(bufferedImage, null);
        // Write the jpeg to a file.
        out = new FileOutputStream(resizedFile);
        // Encodes image as a JPEG data stream
        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
        JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bufferedImage);
        param.setQuality(quality, true);
        encoder.setJPEGEncodeParam(param);
        encoder.encode(bufferedImage);
    } catch (IOException e) {
        e.printStackTrace();
        LOG.error(e.getMessage());
    } finally {
        try {
            out.close();
        } catch (IOException e) {
            e.printStackTrace();
            LOG.error(e.getMessage());
        }
    }
}