org.apache.xmlgraphics.java2d.color.profile.ColorProfileUtil Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id: ColorProfileUtil.java 1400525 2012-10-20 22:03:56Z lbernardo $ */
package org.apache.xmlgraphics.java2d.color.profile;
import java.awt.color.ColorSpace;
import java.awt.color.ICC_Profile;
import java.awt.color.ICC_ProfileRGB;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.util.Arrays;
// CSOFF: MethodName
/**
* Helper methods for handling color profiles.
*/
public final class ColorProfileUtil {
private ColorProfileUtil() {
}
/**
* Returns the profile description of an ICC profile
* @param profile the profile
* @return the description
*/
public static String getICCProfileDescription(ICC_Profile profile) {
byte[] data = profile.getData(ICC_Profile.icSigProfileDescriptionTag);
if (data == null) {
return null;
} else {
//Info on the data format: http://www.color.org/ICC-1_1998-09.PDF
int length = (data[8] << 3 * 8) | (data[9] << 2 * 8) | (data[10] << 8) | data[11];
length--; //Remove trailing NUL character
try {
return new String(data, 12, length, "US-ASCII");
} catch (UnsupportedEncodingException e) {
throw new UnsupportedOperationException("Incompatible VM");
}
}
}
/**
* Indicates whether a given color profile is identical to the default sRGB profile
* provided by the Java class library.
* @param profile the color profile to check
* @return true if it is the default sRGB profile
*/
public static boolean isDefaultsRGB(ICC_Profile profile) {
if (!(profile instanceof ICC_ProfileRGB)) {
return false;
}
// not sure what the best way to compare two profiles is, but comparing instances is not the right way
ICC_Profile sRGBProfile = ICC_Profile.getInstance(ColorSpace.CS_sRGB);
if (profile.getProfileClass() != sRGBProfile.getProfileClass()) {
return false;
}
if (profile.getMajorVersion() != sRGBProfile.getMajorVersion()) {
return false;
}
if (profile.getMinorVersion() != sRGBProfile.getMinorVersion()) {
return false;
}
if (!Arrays.equals(profile.getData(), sRGBProfile.getData())) {
return false;
}
return true;
}
/**
* Proxy method for {@link ICC_Profile#getInstance(byte[])}
* that properly synchronizes the call to avoid a potential race condition.
* @param data the specified ICC Profile data
* @return an {@link ICC_Profile} instance corresponding to the data in the
* specified byte array
*/
public static ICC_Profile getICC_Profile(byte[] data) {
synchronized (ICC_Profile.class) {
return ICC_Profile.getInstance(data);
}
}
/**
* Proxy method for {@link ICC_Profile#getInstance(int)}
* that properly synchronizes the call to avoid a potential race condition.
* @param colorSpace the type of color space to create a profile for. The specified type is
* one of the color space constants defined in the {@link ColorSpace}
* class.
* @return an {@link ICC_Profile} instance corresponding to the specified {@code ColorSpace}
* @throws IllegalArgumentException if {@code colorSpace} is not one of the predefined types
*/
public static ICC_Profile getICC_Profile(int colorSpace) {
synchronized (ICC_Profile.class) {
return ICC_Profile.getInstance(colorSpace);
}
}
/**
* Proxy method for {@link ICC_Profile#getInstance(java.io.InputStream)}
* that properly synchronizes the call to avoid a potential race condition.
* @param in the input stream from which to read the profile data
* @return an {@link ICC_Profile} instance corresponding to the data in the
* specified {@link InputStream}
* @throws IOException if an I/O error occurs while reading the stream
* @throws IllegalArgumentException if the stream does not contain valid ICC Profile data
*/
public static ICC_Profile getICC_Profile(InputStream in) throws IOException {
synchronized (ICC_Profile.class) {
return ICC_Profile.getInstance(in);
}
}
/**
* Proxy method for {@link ICC_Profile#getInstance(java.lang.String)}
* that properly synchronizes the call to avoid a potential race condition.
* @param fileName the name of the file that contains the profile data
* @return an {@link ICC_Profile} instance corresponding to the data in the specified file
* @throws IOException if the file cannot be opened, or an I/O error occurs while reading
* the stream
* @throws IllegalArgumentException if the stream does not contain valid ICC Profile data
* @throws SecurityException if a security manager is installed and it does not permit read
* access to the given file.
*/
public static ICC_Profile getICC_Profile(String fileName) throws IOException {
synchronized (ICC_Profile.class) {
return ICC_Profile.getInstance(fileName);
}
}
}