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Clean-up of reader. Better instantiation of provider in tests. No functional changes.

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This commit is contained in:
Harald Kuhr 2011-11-25 12:47:47 +01:00
parent 158504de5d
commit 905a3da97b
3 changed files with 106 additions and 179 deletions
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264
imageio/imageio-jpeg/src/main/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGImageReader.java
View File

@ -52,7 +52,7 @@ import java.util.*;
import java.util.List;
/**
* A JPEG {@code ImageReader} implementation based on the JDK {@code JPEGImageReader},
* A JPEG {@code ImageReader} implementation based on the JRE {@code JPEGImageReader},
* with support for CMYK JPEGs and other non-standard color spaces,
* like embedded ICC color spaces with rendering intent other than 'perceptual'.
*
@ -101,136 +101,19 @@ public class JPEGImageReader extends ImageReaderBase {
/** Our JPEG reading delegate */
private final ImageReader delegate;
// private final ICCSpaceInterceptor iccSpaceInterceptor;
private final ProgressDelegator progressDelegator;
/** Cached JPEG app segments */
private List<JPEGSegment> segments;
// private static Field getFieldSafely(final Class<?> cl, final String fieldName) {
// try {
// Field field = cl.getDeclaredField(fieldName);
// field.setAccessible(true);
// return field;
// }
// catch (NoSuchFieldException ignore) {
// }
// catch (SecurityException ignore) {
// }
//
// return null;
// }
JPEGImageReader(final ImageReaderSpi provider, final ImageReader delegate) {
super(provider);
this.delegate = Validate.notNull(delegate);
// Field iccCS = getFieldSafely(delegate.getClass(), "iccCS");
// iccSpaceInterceptor = iccCS != null ? new ICCSpaceInterceptor(iccCS) : null;
progressDelegator = new ProgressDelegator();
}
public static void main(String[] args) throws IOException {
File file = new File(args[0]);
ImageInputStream input = ImageIO.createImageInputStream(file);
Iterator<ImageReader> readers = ImageIO.getImageReaders(input);
if (!readers.hasNext()) {
System.err.println("No reader for: " + file);
System.exit(1);
}
ImageReader myReader = readers.next();
System.err.println("Reading using: " + myReader);
myReader.addIIOReadWarningListener(new IIOReadWarningListener() {
public void warningOccurred(ImageReader source, String warning) {
System.err.println("warning: " + warning);
}
});
myReader.addIIOReadProgressListener(new ProgressListenerBase() {
private static final int MAX_W = 78;
int lastProgress = 0;
@Override
public void imageStarted(ImageReader source, int imageIndex) {
System.out.print("[");
}
@Override
public void imageProgress(ImageReader source, float percentageDone) {
int steps = ((int) (percentageDone * MAX_W) / 100);
// System.err.println("percentageDone: " + percentageDone);
for (int i = lastProgress; i < steps; i++) {
System.out.print(".");
}
System.out.flush();
lastProgress = steps;
}
@Override
public void imageComplete(ImageReader source) {
for (int i = lastProgress; i < MAX_W; i++) {
System.out.print(".");
}
System.out.println("]");
}
});
myReader.setInput(input);
try {
ImageReadParam param = myReader.getDefaultReadParam();
if (args.length > 1) {
int sub = Integer.parseInt(args[1]);
param.setSourceSubsampling(sub, sub, 1, 1);
}
long start = System.currentTimeMillis();
BufferedImage image = myReader.read(0, param);
System.err.println("Read time: " + (System.currentTimeMillis() - start) + " ms");
System.err.println("image: " + image);
// image = new ResampleOp(myReader.getWidth(0) / 4, myReader.getHeight(0) / 4, ResampleOp.FILTER_LANCZOS).filter(image, null);
int maxW = 1280;
int maxH = 800;
if (image.getWidth() > maxW || image.getHeight() > maxH) {
start = System.currentTimeMillis();
float aspect = myReader.getAspectRatio(0);
if (aspect >= 1f) {
image = ImageUtil.createResampled(image, maxW, Math.round(maxW / aspect), Image.SCALE_DEFAULT);
}
else {
image = ImageUtil.createResampled(image, Math.round(maxH * aspect), maxH, Image.SCALE_DEFAULT);
}
System.err.println("Scale time: " + (System.currentTimeMillis() - start) + " ms");
}
showIt(image, String.format("Image: %s [%d x %d]", file.getName(), myReader.getWidth(0), myReader.getHeight(0)));
try {
int numThumbnails = myReader.getNumThumbnails(0);
for (int i = 0; i < numThumbnails; i++) {
BufferedImage thumbnail = myReader.readThumbnail(0, i);
showIt(thumbnail, String.format("Image: %s [%d x %d]", file.getName(), thumbnail.getWidth(), thumbnail.getHeight()));
}
}
catch (IIOException e) {
System.err.println("Could not read thumbnails: " + e.getMessage());
}
}
finally {
input.close();
}
}
private void installListeners() {
// if (iccSpaceInterceptor != null) {
// delegate.addIIOReadProgressListener(iccSpaceInterceptor);
// }
delegate.addIIOReadProgressListener(progressDelegator);
delegate.addIIOReadUpdateListener(progressDelegator);
delegate.addIIOReadWarningListener(progressDelegator);
@ -296,9 +179,6 @@ public class JPEGImageReader extends ImageReaderBase {
}
// if (iccSpaceInterceptor != null) {
// iccSpaceInterceptor.replaceCS(delegate);
// }
return types;
}
@ -977,53 +857,6 @@ public class JPEGImageReader extends ImageReaderBase {
}
/*
private static class ICCSpaceInterceptor extends ProgressListenerBase {
final Field iccCS;
public ICCSpaceInterceptor(final Field iccField) {
iccCS = iccField;
}
@Override
public void imageStarted(final ImageReader source, final int imageIndex) {
replaceCS(source);
}
private void replaceCS(final ImageReader source) {
// Intercept and modify the ICC color profile just before the read starts
if (iccCS != null) {
try {
ICC_ColorSpace cs = (ICC_ColorSpace) iccCS.get(source);
if (cs != null) {
ICC_Profile profile = cs.getProfile();
byte[] header = profile.getData(ICC_Profile.icSigHead);
// ColorConvertOp (or the sun.awt.color.CMM class, really) seems to choke on
// rendering intent other than perceptual (0), so we'll change the intent
// NOTE: Rendering intent is really a 4 byte value,
// but legal values are 0-3 (see ICC1v42_2006_05_1.pdf, 7.2.15, p. 19)
if (header[ICC_Profile.icHdrRenderingIntent] != 0) {
header[ICC_Profile.icHdrRenderingIntent] = 0;
// NOTE: We are mutating the current profile in place,
// so we don't need to write the iccCS field back..
profile.setData(ICC_Profile.icSigHead, header);
// But do it anyway, just in case...
iccCS.set(source, ColorSpaces.createColorSpace(profile));
}
}
}
catch (IllegalAccessException ignore) {
}
}
}
}
*/
private static class SOF {
private final int marker;
private final int samplePrecision;
@ -1132,4 +965,99 @@ public class JPEGImageReader extends ImageReaderBase {
);
}
}
public static void main(String[] args) throws IOException {
File file = new File(args[0]);
ImageInputStream input = ImageIO.createImageInputStream(file);
Iterator<ImageReader> readers = ImageIO.getImageReaders(input);
if (!readers.hasNext()) {
System.err.println("No reader for: " + file);
System.exit(1);
}
ImageReader myReader = readers.next();
System.err.println("Reading using: " + myReader);
myReader.addIIOReadWarningListener(new IIOReadWarningListener() {
public void warningOccurred(ImageReader source, String warning) {
System.err.println("warning: " + warning);
}
});
myReader.addIIOReadProgressListener(new ProgressListenerBase() {
private static final int MAX_W = 78;
int lastProgress = 0;
@Override
public void imageStarted(ImageReader source, int imageIndex) {
System.out.print("[");
}
@Override
public void imageProgress(ImageReader source, float percentageDone) {
int steps = ((int) (percentageDone * MAX_W) / 100);
// System.err.println("percentageDone: " + percentageDone);
for (int i = lastProgress; i < steps; i++) {
System.out.print(".");
}
System.out.flush();
lastProgress = steps;
}
@Override
public void imageComplete(ImageReader source) {
for (int i = lastProgress; i < MAX_W; i++) {
System.out.print(".");
}
System.out.println("]");
}
});
myReader.setInput(input);
try {
ImageReadParam param = myReader.getDefaultReadParam();
if (args.length > 1) {
int sub = Integer.parseInt(args[1]);
param.setSourceSubsampling(sub, sub, 1, 1);
}
long start = System.currentTimeMillis();
BufferedImage image = myReader.read(0, param);
System.err.println("Read time: " + (System.currentTimeMillis() - start) + " ms");
System.err.println("image: " + image);
// image = new ResampleOp(myReader.getWidth(0) / 4, myReader.getHeight(0) / 4, ResampleOp.FILTER_LANCZOS).filter(image, null);
int maxW = 1280;
int maxH = 800;
if (image.getWidth() > maxW || image.getHeight() > maxH) {
start = System.currentTimeMillis();
float aspect = myReader.getAspectRatio(0);
if (aspect >= 1f) {
image = ImageUtil.createResampled(image, maxW, Math.round(maxW / aspect), Image.SCALE_DEFAULT);
}
else {
image = ImageUtil.createResampled(image, Math.round(maxH * aspect), maxH, Image.SCALE_DEFAULT);
}
System.err.println("Scale time: " + (System.currentTimeMillis() - start) + " ms");
}
showIt(image, String.format("Image: %s [%d x %d]", file.getName(), myReader.getWidth(0), myReader.getHeight(0)));
try {
int numThumbnails = myReader.getNumThumbnails(0);
for (int i = 0; i < numThumbnails; i++) {
BufferedImage thumbnail = myReader.readThumbnail(0, i);
showIt(thumbnail, String.format("Image: %s [%d x %d]", file.getName(), thumbnail.getWidth(), thumbnail.getHeight()));
}
}
catch (IIOException e) {
System.err.println("Could not read thumbnails: " + e.getMessage());
}
}
finally {
input.close();
}
}
}

14
imageio/imageio-jpeg/src/main/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGImageReaderSpi.java
View File

@ -83,7 +83,7 @@ public class JPEGImageReaderSpi extends ImageReaderSpi {
this.delegateProvider = Validate.notNull(delegateProvider);
}
ImageReaderSpi lookupDelegate(final ServiceRegistry registry) {
static ImageReaderSpi lookupDelegateProvider(final ServiceRegistry registry) {
// Should be safe to lookup now, as the bundled providers are hardcoded usually
try {
return (ImageReaderSpi) registry.getServiceProviderByClass(Class.forName("com.sun.imageio.plugins.jpeg.JPEGImageReaderSpi"));
@ -102,16 +102,17 @@ public class JPEGImageReaderSpi extends ImageReaderSpi {
public void onRegistration(final ServiceRegistry registry, final Class<?> category) {
if (delegateProvider == null) {
// Install delegate now
delegateProvider = lookupDelegate(registry);
delegateProvider = lookupDelegateProvider(registry);
}
if (delegateProvider == null) {
IIOUtil.deregisterProvider(registry, this, category);
}
else {
if (delegateProvider != null) {
// Order before com.sun provider, to aid ImageIO in selecting our reader
registry.setOrdering((Class<ImageReaderSpi>) category, this, delegateProvider);
}
else {
// Or, if no delegate is found, silently deregister from the registry
IIOUtil.deregisterProvider(registry, this, category);
}
}
@Override
@ -158,7 +159,6 @@ public class JPEGImageReaderSpi extends ImageReaderSpi {
@Override
public String getPluginClassName() {
return "com.twelvemonkeys.imageio.plugins.jpeg.JPEGImageReader";
// return delegateProvider.getPluginClassName();
}
@Override

7
imageio/imageio-jpeg/src/test/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGImageReaderTest.java
View File

@ -47,16 +47,15 @@ import java.util.List;
*/
public class JPEGImageReaderTest extends ImageReaderAbstractTestCase<JPEGImageReader> {
private static final JPEGImageReaderSpi SPI = new JPEGImageReaderSpi();
private static final JPEGImageReaderSpi SPI = new JPEGImageReaderSpi(lookupDelegateProvider());
static {
IIORegistry.getDefaultInstance().registerServiceProvider(SPI);
private static ImageReaderSpi lookupDelegateProvider() {
return JPEGImageReaderSpi.lookupDelegateProvider(IIORegistry.getDefaultInstance());
}
@Override
protected List<TestData> getTestData() {
return Arrays.asList(
// TODO: Create JPEG with broken profile from Anders' photos..
new TestData(getClassLoaderResource("/jpeg/cmm-exception-adobe-rgb.jpg"), new Dimension(626, 76)),
new TestData(getClassLoaderResource("/jpeg/cmm-exception-srgb.jpg"), new Dimension(1800, 1200)),
new TestData(getClassLoaderResource("/jpeg/gray-sample.jpg"), new Dimension(386, 396)),