/**
* Write out the given profile to the stream, embedded in the necessary number of APP2 segments,
* per the ICC spec. This is the only mechanism for writing an ICC profile to a stream.
*/
static void writeICC(ICC_Profile profile, ImageOutputStream ios) throws IOException {
int LENGTH_LENGTH = 2;
final String ID = "ICC_PROFILE";
int ID_LENGTH = ID.length() + 1; // spec says it's null-terminated
int COUNTS_LENGTH = 2;
int MAX_ICC_CHUNK_SIZE = 65535 - LENGTH_LENGTH - ID_LENGTH - COUNTS_LENGTH;
byte[] data = profile.getData();
int numChunks = data.length / MAX_ICC_CHUNK_SIZE;
if ((data.length % MAX_ICC_CHUNK_SIZE) != 0) {
numChunks++;
}
int chunkNum = 1;
int offset = 0;
for (int i = 0; i < numChunks; i++) {
int dataLength = Math.min(data.length - offset, MAX_ICC_CHUNK_SIZE);
int segLength = dataLength + COUNTS_LENGTH + ID_LENGTH + LENGTH_LENGTH;
ios.write(0xff);
ios.write(JPEG.APP2);
MarkerSegment.write2bytes(ios, segLength);
byte[] id = ID.getBytes("US-ASCII");
ios.write(id);
ios.write(0); // Null-terminate the string
ios.write(chunkNum++);
ios.write(numChunks);
ios.write(data, offset, dataLength);
offset += dataLength;
}
}
public LCMS_Profile(ICC_Profile iccProfile) {
Long handle = (Long) profileCache.get(iccProfile);
if (handle == null) {
byte data[] = iccProfile.getData();
cmsProfileHandle = LCMS.cmsOpenProfileFromMem(data, data.length);
profileCache.put(iccProfile, new Long(cmsProfileHandle));
} else cmsProfileHandle = handle.longValue();
}
ICCMarkerSegment(Node node) throws IIOInvalidTreeException {
super(JPEG.APP2);
if (node instanceof IIOMetadataNode) {
IIOMetadataNode ourNode = (IIOMetadataNode) node;
ICC_Profile prof = (ICC_Profile) ourNode.getUserObject();
if (prof != null) { // May be null
profile = prof.getData();
}
}
}
public Profile(ICC_Profile iccProfile) {
RCHandle handle = (RCHandle) profileCache.get(iccProfile);
if (handle != null && handle.increment() > 1) cmsProfile = handle;
else {
byte data[] = iccProfile.getData();
cmsProfile = new RCHandle(cmsOpenProfileFromMem(data, data.length));
profileCache.put(iccProfile, cmsProfile);
cmsProfile.increment(); // for the cache reference
}
}
/**
* Fixes problematic 'XYZ ' tags in Corbis RGB profile.
*
* @return {@code true} if found and fixed, otherwise {@code false} for short-circuiting to avoid
* unnecessary array copying.
*/
private static boolean fixProfileXYZTag(ICC_Profile profile, final int tagSignature) {
byte[] data = profile.getData(tagSignature);
// The CMM expects 0x64 65 73 63 ('XYZ ') but is 0x17 A5 05 B8..?
if (data != null && Arrays.equals(Arrays.copyOfRange(data, 0, 4), CORBIS_RGB_ALTERNATE_XYZ)) {
data[0] = 'X';
data[1] = 'Y';
data[2] = 'Z';
data[3] = ' ';
profile.setData(tagSignature, data);
return true;
}
return false;
}
/**
* Tests whether an ICC color profile is known to cause problems for {@link
* java.awt.image.ColorConvertOp}.
*
* <p><em> Note that this method only tests if a color conversion using this profile is known to
* fail. There's no guarantee that the color conversion will succeed even if this method returns
* {@code false}. </em>
*
* @param profile the ICC color profile. May not be {@code null}.
* @return {@code true} if known to be offending, {@code false} otherwise
* @throws IllegalArgumentException if {@code profile} is {@code null}
*/
public static boolean isOffendingColorProfile(final ICC_Profile profile) {
Validate.notNull(profile, "profile");
// NOTE:
// Several embedded ICC color profiles are non-compliant with Java pre JDK7 and throws
// CMMException
// The problem with these embedded ICC profiles seems to be the rendering intent
// being 1 (01000000) - "Media Relative Colormetric" in the offending profiles,
// and 0 (00000000) - "Perceptual" in the good profiles
// (that is 1 single bit of difference right there.. ;-)
// See http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7064516
// This is particularly annoying, as the byte copying isn't really necessary,
// except the getRenderingIntent method is package protected in java.awt.color
byte[] data = profile.getData(ICC_Profile.icSigHead);
return data[ICC_Profile.icHdrRenderingIntent] != 0;
}
/**
* Creates an ICC color space from the given ICC color profile.
*
* <p>For standard Java color spaces, the built-in instance is returned. Otherwise, color spaces
* are looked up from cache and created on demand.
*
* @param profile the ICC color profile. May not be {@code null}.
* @return an ICC color space
* @throws IllegalArgumentException if {@code profile} is {@code null}
*/
public static ICC_ColorSpace createColorSpace(final ICC_Profile profile) {
Validate.notNull(profile, "profile");
byte[] profileHeader = profile.getData(ICC_Profile.icSigHead);
ICC_ColorSpace cs = getInternalCS(profile.getColorSpaceType(), profileHeader);
if (cs != null) {
return cs;
}
// Special case for color profiles with rendering intent != 0, see isOffendingColorProfile
// method
// NOTE: Rendering intent is really a 4 byte value, but legal values are 0-3
// (ICC1v42_2006_05_1.pdf, 7.2.15, p. 19)
if (profileHeader[ICC_Profile.icHdrRenderingIntent] != 0) {
profileHeader[ICC_Profile.icHdrRenderingIntent] = 0;
// Test again if this is an internal CS
cs = getInternalCS(profile.getColorSpaceType(), profileHeader);
if (cs != null) {
return cs;
}
// NOTE: The intent change breaks JDK7: Seems to be a bug in ICC_Profile.getData/setData,
// as calling it with unchanged header data, still breaks when creating new ICC_ColorSpace...
// However, we simply skip that, as JDK7 handles the rendering intents already.
if (!JDK_HANDLES_RENDERING_INTENTS) {
// Fix profile before lookup/create
profile.setData(ICC_Profile.icSigHead, profileHeader);
}
}
// Special handling to detect problematic Corbis RGB ICC Profile.
// This makes sure tags that are expected to be of type 'XYZ ' really have this expected type.
// Should leave other ICC profiles unchanged.
if (fixProfileXYZTag(profile, ICC_Profile.icSigMediaWhitePointTag)) {
fixProfileXYZTag(profile, ICC_Profile.icSigRedColorantTag);
fixProfileXYZTag(profile, ICC_Profile.icSigGreenColorantTag);
fixProfileXYZTag(profile, ICC_Profile.icSigBlueColorantTag);
}
return getCachedOrCreateCS(profile, profileHeader);
}
public ICCColorSpaceExt(ICC_Profile p, int intent) {
super(p);
this.intent = intent;
switch (intent) {
case AUTO:
case RELATIVE_COLORIMETRIC:
case ABSOLUTE_COLORIMETRIC:
case SATURATION:
case PERCEPTUAL:
break;
default:
throw new IllegalArgumentException();
}
/** Apply the requested intent into the profile */
if (intent != AUTO) {
byte[] hdr = p.getData(ICC_Profile.icSigHead);
hdr[ICC_Profile.icHdrRenderingIntent] = (byte) intent;
}
}
/**
* Tests whether an ICC color profile is equal to the default sRGB profile.
*
* @param profile the ICC profile to test. May not be {@code null}.
* @return {@code true} if {@code profile} is equal to the default sRGB profile.
* @throws IllegalArgumentException if {@code profile} is {@code null}
* @see java.awt.color.ColorSpace#isCS_sRGB()
*/
public static boolean isCS_sRGB(final ICC_Profile profile) {
Validate.notNull(profile, "profile");
return profile.getColorSpaceType() == ColorSpace.TYPE_RGB
&& Arrays.equals(profile.getData(ICC_Profile.icSigHead), sRGB.header);
}