org.apache.batik.ext.awt.image.codec.png.PNGDecodeParam java code examples

Common ways to obtain PNGDecodeParam

private void myMethod () {
 PNGDecodeParam p =new PNGDecodeParam()
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}

public void run() {
  Filter filt;
  try {
    PNGDecodeParam param = new PNGDecodeParam();
    param.setExpandPalette(true);
      param.setPerformGammaCorrection(false);
    else {
      param.setPerformGammaCorrection(true);
      param.setDisplayExponent(2.2f); // sRGB gamma

  decodeParam = new PNGDecodeParam();
this.suppressAlpha = decodeParam.getSuppressAlpha();
this.expandPalette = decodeParam.getExpandPalette();
this.output8BitGray = decodeParam.getOutput8BitGray();
this.expandGrayAlpha = decodeParam.getExpandGrayAlpha();
if (decodeParam.getPerformGammaCorrection()) {
  this.userExponent = decodeParam.getUserExponent();
  this.displayExponent = decodeParam.getDisplayExponent();
  performGammaCorrection = true;
  output8BitGray = true;
this.generateEncodeParam = decodeParam.getGenerateEncodeParam();

  decodeParam = new PNGDecodeParam();
this.suppressAlpha = decodeParam.getSuppressAlpha();
this.expandPalette = decodeParam.getExpandPalette();
this.output8BitGray = decodeParam.getOutput8BitGray();
this.expandGrayAlpha = decodeParam.getExpandGrayAlpha();
if (decodeParam.getPerformGammaCorrection()) {
  this.userExponent = decodeParam.getUserExponent();
  this.displayExponent = decodeParam.getDisplayExponent();
  performGammaCorrection = true;
  output8BitGray = true;
this.generateEncodeParam = decodeParam.getGenerateEncodeParam();

  decodeParam = new PNGDecodeParam();
this.suppressAlpha = decodeParam.getSuppressAlpha();
this.expandPalette = decodeParam.getExpandPalette();
this.output8BitGray = decodeParam.getOutput8BitGray();
this.expandGrayAlpha = decodeParam.getExpandGrayAlpha();
if (decodeParam.getPerformGammaCorrection()) {
  this.userExponent = decodeParam.getUserExponent();
  this.displayExponent = decodeParam.getDisplayExponent();
  performGammaCorrection = true;
  output8BitGray = true;
this.generateEncodeParam = decodeParam.getGenerateEncodeParam();

public void run() {
  Filter filt;
  try {
    PNGDecodeParam param = new PNGDecodeParam();
    param.setExpandPalette(true);
      param.setPerformGammaCorrection(false);
    else {
      param.setPerformGammaCorrection(true);
      param.setDisplayExponent(2.2f); // sRGB gamma

  decodeParam = new PNGDecodeParam();
this.suppressAlpha = decodeParam.getSuppressAlpha();
this.expandPalette = decodeParam.getExpandPalette();
this.output8BitGray = decodeParam.getOutput8BitGray();
this.expandGrayAlpha = decodeParam.getExpandGrayAlpha();
if (decodeParam.getPerformGammaCorrection()) {
  this.userExponent = decodeParam.getUserExponent();
  this.displayExponent = decodeParam.getDisplayExponent();
  performGammaCorrection = true;
  output8BitGray = true;
this.generateEncodeParam = decodeParam.getGenerateEncodeParam();

public void run() {
  Filter filt;
  try {
    PNGDecodeParam param = new PNGDecodeParam();
    param.setExpandPalette(true);
      param.setPerformGammaCorrection(false);
    else {
      param.setPerformGammaCorrection(true);
      param.setDisplayExponent(2.2f); // sRGB gamma

  decodeParam = new PNGDecodeParam();
this.suppressAlpha = decodeParam.getSuppressAlpha();
this.expandPalette = decodeParam.getExpandPalette();
this.output8BitGray = decodeParam.getOutput8BitGray();
this.expandGrayAlpha = decodeParam.getExpandGrayAlpha();
if (decodeParam.getPerformGammaCorrection()) {
  this.userExponent = decodeParam.getUserExponent();
  this.displayExponent = decodeParam.getDisplayExponent();
  performGammaCorrection = true;
  output8BitGray = true;
this.generateEncodeParam = decodeParam.getGenerateEncodeParam();

public void run() {
  Filter filt;
  try {
    PNGDecodeParam param = new PNGDecodeParam();
    param.setExpandPalette(true);
      param.setPerformGammaCorrection(false);
    else {
      param.setPerformGammaCorrection(true);
      param.setDisplayExponent(2.2f); // sRGB gamma

  decodeParam = new PNGDecodeParam();
this.suppressAlpha = decodeParam.getSuppressAlpha();
this.expandPalette = decodeParam.getExpandPalette();
this.output8BitGray = decodeParam.getOutput8BitGray();
this.expandGrayAlpha = decodeParam.getExpandGrayAlpha();
if (decodeParam.getPerformGammaCorrection()) {
  this.userExponent = decodeParam.getUserExponent();
  this.displayExponent = decodeParam.getDisplayExponent();
  performGammaCorrection = true;
  output8BitGray = true;
this.generateEncodeParam = decodeParam.getGenerateEncodeParam();

  decodeParam = new PNGDecodeParam();
this.suppressAlpha = decodeParam.getSuppressAlpha();
this.expandPalette = decodeParam.getExpandPalette();
this.output8BitGray = decodeParam.getOutput8BitGray();
this.expandGrayAlpha = decodeParam.getExpandGrayAlpha();
if (decodeParam.getPerformGammaCorrection()) {
  this.userExponent = decodeParam.getUserExponent();
  this.displayExponent = decodeParam.getDisplayExponent();
  performGammaCorrection = true;
  output8BitGray = true;
this.generateEncodeParam = decodeParam.getGenerateEncodeParam();

  decodeParam = new PNGDecodeParam();
this.suppressAlpha = decodeParam.getSuppressAlpha();
this.expandPalette = decodeParam.getExpandPalette();
this.output8BitGray = decodeParam.getOutput8BitGray();
this.expandGrayAlpha = decodeParam.getExpandGrayAlpha();
if (decodeParam.getPerformGammaCorrection()) {
  this.userExponent = decodeParam.getUserExponent();
  this.displayExponent = decodeParam.getDisplayExponent();
  performGammaCorrection = true;
  output8BitGray = true;
this.generateEncodeParam = decodeParam.getGenerateEncodeParam();

Javadoc

An instance of ImageDecodeParam for decoding images in the PNG format. PNGDecodeParam allows several aspects of the decoding process for PNG images to be controlled. By default, decoding produces output images with the following properties:

Images with a bit depth of 8 or less use a DataBufferByte to hold the pixel data. 16-bit images use a DataBufferUShort.

Palette color images and non-transparent grayscale images with bit depths of 1, 2, or 4 will have a MultiPixelPackedSampleModel and an IndexColorModel. For palette color images, the ColorModel palette contains the red, green, blue, and optionally alpha palette information. For grayscale images, the palette is used to expand the pixel data to cover the range 0-255. The pixels are stored packed 8, 4, or 2 to the byte.

All other images are stored using a PixelInterleavedSampleModel with each sample of a pixel occupying its own byte or short within the DataBuffer. A ComponentColorModel is used which simply extracts the red, green, blue, gray, and/or alpha information from separate DataBuffer entries.

Five aspects of this process may be altered by means of methods in this class.

setSuppressAlpha() prevents an alpha channel from appearing in the output.

setExpandPalette() turns palette-color images into 3-or 4-channel full-color images.

setOutput8BitGray() causes 1, 2, or 4 bit grayscale images to be output in 8-bit form, using a ComponentSampleModel and ComponentColorModel.

setDecodingExponent() causes the output image to be gamma-corrected using a supplied output gamma value.

setExpandGrayAlpha() causes 2-channel gray/alpha (GA) images to be output as full-color (GGGA) images, which may simplify further processing and display.

This class is not a committed part of the JAI API. It may be removed or changed in future releases of JAI.

Most used methods

<init>
Constructs a default instance of PNGDecodeParam.
getDisplayExponent
Returns the current value of the display exponent parameter. By default, the display exponent is equ
getExpandGrayAlpha
Returns the current setting of the gray/alpha expansion.
getExpandPalette
Returns true if palette-color images will be expanded to produce full-color output.
getGenerateEncodeParam
Returns true if an instance ofPNGEncodeParam will be available after an image has been decoded via t
getOutput8BitGray
Returns the current value of the 8-bit gray output parameter.
getPerformGammaCorrection
Returns true if gamma correction is to be performed on the image data. The default is true. If gamma
getSuppressAlpha
Returns true if alpha (transparency) will be prevented from appearing in the output.
getUserExponent
Returns the current value of the user exponent parameter. By default, the user exponent is equal to
setDisplayExponent
Sets the display exponent to a given value. The exponent must be positive. If not, anIllegalArgument
setEncodeParam
Sets the current encoder param instance. This method is intended to be called by the PNG decoder and
setExpandPalette
If set, palette color images (PNG color type 3) will be decoded into full-color (RGB) output images.

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How to usePNGDecodeParam in org.apache.batik.ext.awt.image.codec.png

Best Java code snippets using org.apache.batik.ext.awt.image.codec.png.PNGDecodeParam (Showing top 12 results out of 315)

How to use
PNGDecodeParam
in
org.apache.batik.ext.awt.image.codec.png