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* version 2 for more details (a copy is included in the LICENSE file that
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/**
* @test
* @bug 4413109 4418221 6607198 8147448 8204187
* @run main BitDepth
* @summary Checks that ImageIO writers for standard formats can handle
* various BufferedImage RGB types. An optional list of arguments
* may be used to test the writers for a different list of formats.
*/
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import javax.imageio.ImageIO;
import javax.imageio.ImageTypeSpecifier;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageOutputStream;
public class BitDepth {
public static void main(String[] args) throws IOException {
new BitDepth(args);
}
// Check that the PNG writer can write an all-white image correctly
private static boolean testPNGByteBinary() throws IOException {
int width = 10;
int height = 10;
File f = new File("BlackStripe.png");
BufferedImage bi = new BufferedImage(width, height,
BufferedImage.TYPE_BYTE_BINARY);
Graphics2D g = bi.createGraphics();
g.setColor(new Color(255, 255, 255));
g.fillRect(0, 0, width, height);
ImageIO.write(bi, "png", f);
BufferedImage bi2 = ImageIO.read(f);
if (bi2.getWidth() != width || bi2.getHeight() != height) {
System.out.println("Dimensions changed!");
return false;
}
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
int rgb = bi2.getRGB(x, y);
if (rgb != 0xffffffff) {
System.out.println("Found a non-white pixel!");
return false;
}
}
}
f.delete();
return true;
}
private static final int[] biRGBTypes = {
BufferedImage.TYPE_INT_RGB,
BufferedImage.TYPE_INT_BGR,
BufferedImage.TYPE_3BYTE_BGR,
BufferedImage.TYPE_USHORT_565_RGB,
BufferedImage.TYPE_USHORT_555_RGB,
BufferedImage.TYPE_INT_ARGB,
BufferedImage.TYPE_INT_ARGB_PRE,
BufferedImage.TYPE_4BYTE_ABGR,
BufferedImage.TYPE_4BYTE_ABGR_PRE
};
//private static final int[] biGrayTypes = {
// BufferedImage.TYPE_BYTE_GRAY,
// BufferedImage.TYPE_USHORT_GRAY,
// BufferedImage.TYPE_BYTE_BINARY
//};
private static final String[] biTypeNames = {
"CUSTOM",
"INT_RGB",
"INT_ARGB",
"INT_ARGB_PRE",
"INT_BGR",
"3BYTE_BGR",
"4BYTE_ABGR",
"4BYTE_ABGR_PRE",
"USHORT_565_RGB",
"USHORT_555_RGB",
"BYTE_GRAY",
"USHORT_GRAY",
"BYTE_BINARY",
"BYTE_INDEXED"
};
private int width = 80;
private int height = 80;
private String[] formats = { "png", "jpeg", "tiff", "bmp", "gif" };
public BitDepth(String[] args) throws IOException {
if (args.length > 0) {
formats = args;
}
for (String format : formats) {
testFormat(format);
}
}
private void testFormat(String format) throws IOException {
boolean allOK = true;
for (int type : biRGBTypes) {
// TODO: remove the following 'if' block after the 8147448 fix
if ( format.toLowerCase().equals("bmp") && (
(type == BufferedImage.TYPE_INT_ARGB ) ||
(type == BufferedImage.TYPE_INT_ARGB_PRE ) ||
(type == BufferedImage.TYPE_4BYTE_ABGR ) ||
(type == BufferedImage.TYPE_4BYTE_ABGR_PRE ))) {
System.err.println("cannot use " + biTypeNames[type] +
" for bmp because of JDK-8147448.\t" +
" please update the test after fix of this bug!");
continue;
}
System.out.println("Testing " + format +
" writer for type " + biTypeNames[type]);
File f = testWriteRGB(format, type);
if (f == null)
continue;
boolean ok = testReadRGB(f);
if (ok) {
f.delete();
}
allOK = allOK && ok;
}
if (format.equals("png")) {
System.out.println("Testing png writer for black stripe");
boolean ok = testPNGByteBinary();
allOK = allOK && ok;
}
if (!allOK) {
throw new RuntimeException("Test failed");
}
}
private File testWriteRGB(String format, int type) throws IOException {
BufferedImage bi = new BufferedImage(width, height, type);
Graphics2D g = bi.createGraphics();
Color white = new Color(255, 255, 255);
Color red = new Color(255, 0, 0);
Color green = new Color(0, 255, 0);
Color blue = new Color(0, 0, 255);
g.setColor(white);
g.fillRect(0, 0, width, height);
g.setColor(red);
g.fillRect(10, 10, 20, 20);
g.setColor(green);
g.fillRect(30, 30, 20, 20);
g.setColor(blue);
g.fillRect(50, 50, 20, 20);
ImageTypeSpecifier spec = new ImageTypeSpecifier(bi);
Iterator<ImageWriter> writers = ImageIO.getImageWriters(spec, format);
File file = new File("BitDepth_" + biTypeNames[type] + "." + format);
if (!writers.hasNext()) {
System.out.println("\tNo writers available for type " + biTypeNames[type]
+ " BufferedImage!");
return null;
} else {
ImageWriter writer = writers.next();
try (ImageOutputStream out = ImageIO.createImageOutputStream(file)) {
writer.setOutput(out);
writer.write(bi);
} catch (Exception e) {
System.out.println("\tCan't write a type " + biTypeNames[type]
+ " BufferedImage!");
throw new RuntimeException(e);
}
}
return file;
}
private int colorDistance(int color, int r, int g, int b) {
int r0 = ((color >> 16) & 0xff) - r;
int g0 = ((color >> 8) & 0xff) - g;
int b0 = (color & 0xff) - b;
return r0*r0 + g0*g0 + b0*b0;
}
private boolean testReadRGB(File file) throws IOException {
int[] rgb = new int[3];
BufferedImage bi = ImageIO.read(file);
if (bi == null) {
System.out.println("Couldn't read image!");
return false;
}
int r = bi.getRGB(15, 15);
if (colorDistance(r, 255, 0, 0) > 20) {
System.out.println("Red was distorted!");
return false;
}
int g = bi.getRGB(35, 35);
if (colorDistance(g, 0, 255, 0) > 20) {
System.out.println("Green was distorted!");
return false;
}
int b = bi.getRGB(55, 55);
if (colorDistance(b, 0, 0, 255) > 20) {
System.out.println("Blue was distorted!");
return false;
}
int w = bi.getRGB(55, 15);
if (colorDistance(w, 255, 255, 255) > 20) {
System.out.println("White was distorted!");
return false;
}
return true;
}
}