Example usage for java.awt.image DataBuffer setElem

Introduction

In this page you can find the example usage for java.awt.image DataBuffer setElem.

Prototype

public void setElem(int i, int val) 

Source Link

Document

Sets the requested data array element in the first (default) bank from the given integer.

Usage

From source file:omr.jai.TestImage3.java

    public static PlanarImage decodeImage (String[] rows)
    {//www  .  j a va  2s .c o  m
        // Create the DataBuffer to hold the pixel samples
        final int width = rows[0].length();
        final int height = rows.length;

        // Create Raster
        Raster raster;
        if (true) {
            raster = Raster.createPackedRaster
            (DataBuffer.TYPE_INT, width, height,
             new int[] {0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000},// bandMasks RGBA
             null);
        } else {
            raster = Raster.createInterleavedRaster
                (DataBuffer.TYPE_BYTE, width, height,
                 4,// num of bands
                 null);
        }

        // Populate the data buffer
        DataBuffer dataBuffer = raster.getDataBuffer();
        int index = 0;
        for (String row : rows) {
            for (int x = 0; x < width; x++) {
                int argb = toARGB(row.charAt(x));
                dataBuffer.setElem(index, argb);
                index++;
            }
        }

        // Dump
//         final int size = width * height;
//         System.out.println("DataBuffer :");
//         for (int i = 0; i < size; i++) {
//             if (i % width == 0) {
//                 System.out.println();
//             }
//             System.out.print(String.format("%8x ", dataBuffer.getElem(i)));
//         }
//         System.out.println();

        // Create the image
        BufferedImage bufferedImage = new BufferedImage
                (width, height, BufferedImage.TYPE_INT_ARGB);
        bufferedImage.setData(raster);

        // Dump
//         System.out.println("BufferedImage :");
//         for (int y = 0; y < height; y++) {
//             System.out.println();
//             for (int x = 0; x < width; x++) {
//                 System.out.print(String.format("%8x ", bufferedImage.getRGB(x, y)));
//             }
//         }
//         System.out.println();

        return PlanarImage.wrapRenderedImage(bufferedImage);
    }

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From source file:RasterDemo.java

public void flipBufferedImage() {
    bi2 = new BufferedImage(bi1.getWidth(), bi1.getHeight(), bi1.getType());

    DataBuffer db1 = bi1.getRaster().getDataBuffer();
    DataBuffer db2 = bi2.getRaster().getDataBuffer();

    for (int i = db1.getSize() - 1, j = 0; i >= 0; --i, j++) {
        db2.setElem(j, db1.getElem(i));
    }// w  ww .java  2 s  . c  o  m
}

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