Class ColorProfiles

java.lang.Object
com.twelvemonkeys.imageio.color.ColorProfiles
public final class ColorProfiles extends Object
A helper class for working with ICC color profiles.

Standard ICC color profiles are read from system-specific locations for known operating systems.

Color profiles may be configured by placing a property-file com/twelvemonkeys/imageio/color/icc_profiles.properties on the classpath, specifying the full path to the profiles. ICC color profiles are probably already present on your system, or can be downloaded from ICC, Adobe or other places. *

Example property file: 

# icc_profiles.properties
ADOBE_RGB_1998=/path/to/Adobe RGB 1998.icc
GENERIC_CMYK=/path/to/Generic CMYK.icc
Version:
$Id: ColorSpaces.java,v 1.0 24.01.11 17.51 haraldk Exp$

  • Field Details

    • profileCleaner

      private static final ICCProfileSanitizer profileCleaner
      We need special ICC profile handling for KCMS vs LCMS. Delegate to specific strategy.

    • ICC_PROFILE_MAGIC

      static final int ICC_PROFILE_MAGIC
      See Also:

    • ICC_PROFILE_HEADER_SIZE

      static final int ICC_PROFILE_HEADER_SIZE
      See Also:

  • Constructor Details

    • ColorProfiles

      private ColorProfiles()

  • Method Details

    • getProfileHeaderWithProfileId

      static byte[] getProfileHeaderWithProfileId(ICC_Profile profile)

    • getProfileHeaderWithProfileId

      static byte[] getProfileHeaderWithProfileId(byte[] data)

    • computeMD5

      private static byte[] computeMD5(byte[] header, byte[] data)

    • isCS_sRGB

      public static boolean isCS_sRGB(ICC_Profile profile)
      Tests whether an ICC color profile is equal to the default sRGB profile.
      Parameters:
      profile - the ICC profile to test. May not be null.
      Returns:
      true if profile is equal to the default sRGB profile.
      Throws:
      IllegalArgumentException - if profile is null
      See Also:

    • isCS_GRAY

      public static boolean isCS_GRAY(ICC_Profile profile)
      Tests whether an ICC color profile is equal to the default GRAY profile.
      Parameters:
      profile - the ICC profile to test. May not be null.
      Returns:
      true if profile is equal to the default GRAY profile.
      Throws:
      IllegalArgumentException - if profile is null
      See Also:

    • isOffendingColorProfile

      static boolean isOffendingColorProfile(ICC_Profile profile)
      Tests whether an ICC color profile is known to cause problems for ColorConvertOp.

      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 false.

      Parameters:
      profile - the ICC color profile. May not be null.
      Returns:
      true if known to be offending, false otherwise
      Throws:
      IllegalArgumentException - if profile is null

    • validateProfile

      public static ICC_Profile validateProfile(ICC_Profile profile)
      Tests whether an ICC color profile is valid. Invalid profiles are known to cause problems for ColorConvertOp.

      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 false.

      Parameters:
      profile - the ICC color profile. May not be null.
      Returns:
      profile if valid.
      Throws:
      IllegalArgumentException - if profile is null
      CMMException - if profile is invalid.

    • readProfileRaw

      public static ICC_Profile readProfileRaw(InputStream input) throws IOException
      Reads an ICC Profile from the given input stream, as-is, with no validation. This method behaves exactly like ICC_Profile.getInstance(input).
      Parameters:
      input - the input stream to read from, may not be null
      Returns:
      an ICC_Profile object as read from the input stream.
      Throws:
      IOException - If an I/O error occurs while reading the stream.
      IllegalArgumentException - If input is null or the stream does not contain valid ICC Profile data.
      See Also:

    • readProfile

      public static ICC_Profile readProfile(InputStream input) throws IOException
      Reads an ICC Profile from the given input stream, with extra validation. If a matching profile already exists in cache, the cached instance is returned.
      Parameters:
      input - the input stream to read from, may not be null
      Returns:
      an ICC_Profile object as read from the input stream.
      Throws:
      IOException - If an I/O error occurs while reading the stream.
      IllegalArgumentException - If input is null or the stream does not contain valid ICC Profile data.
      See Also:

    • createProfileRaw

      public static ICC_Profile createProfileRaw(byte[] input)
      Creates an ICC Profile from the given byte array, as-is, with no validation. This method behaves exactly like ICC_Profile.getInstance(input), except that extraneous bytes at the end of the array is ignored.
      Parameters:
      input - the byte array to create a profile from, may not be null
      Returns:
      an ICC_Profile object created from the byte array
      Throws:
      IllegalArgumentException - If input is null or the byte array does not contain valid ICC Profile data.
      See Also:

    • createProfile

      public static ICC_Profile createProfile(byte[] input)
      Reads an ICC Profile from the given byte array, with extra validation. Extraneous bytes at the end of the array are ignored. If a matching profile already exists in cache, the cached instance is returned.
      Parameters:
      input - the byte array to create a profile from, may not be null
      Returns:
      an ICC_Profile object created from the byte array
      Throws:
      IllegalArgumentException - If input is null or the byte array does not contain valid ICC Profile data.
      See Also:

    • limit

      private static byte[] limit(byte[] input, int size)

    • validateAndGetSize

      private static int validateAndGetSize(byte[] input)

    • validateHeaderAndGetSize

      private static int validateHeaderAndGetSize(byte[] input)

    • getInternalProfile

      private static ICC_Profile getInternalProfile(byte[] profileHeader)

    • intBigEndian

      private static int intBigEndian(byte[] data, int index)

    • getCsType

      private static int getCsType(byte[] profileHeader)

    • readProfileFromClasspathResource

      static ICC_Profile readProfileFromClasspathResource(String profilePath)

    • readProfileFromPath

      static ICC_Profile readProfileFromPath(String profilePath)

    • fixProfile

      static void fixProfile(ICC_Profile profile)

    • validationAltersProfileHeader

      static boolean validationAltersProfileHeader()