icc_profile.java

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    String fileName = deferralInfo.filename;

        profileActivator = null;
        deferralInfo = null;
        if ((fis = openProfile(fileName)) == null) {
            throw new IllegalArgumentException("Cannot open file " + fileName);
        }
        try {
            profileData = getProfileDataFromStream(fis);
            fis.close();    /* close the file */
        }
        catch (IOException e) {
            throw new IllegalArgumentException("Invalid ICC Profile Data" +
                fileName);
        }
        if (profileData == null) {
            throw new IllegalArgumentException("Invalid ICC Profile Data" +
                fileName);
        }
        try {
            CMM.checkStatus(CMM.cmmLoadProfile(profileData, theID));
        } catch (CMMException c) {
            throw new IllegalArgumentException("Invalid ICC Profile Data" +
                fileName);
        }
        ID = theID[0];
    }


    /**
     * Returns profile major version.
     * @return  The major version of the profile.
     */
    public int getMajorVersion() {
    byte[] theHeader;
    
        theHeader = getData(icSigHead); /* getData will activate deferred
                                           profiles if necessary */

        return (int) theHeader[8];
    }

    /**
     * Returns profile minor version.
     * @return The minor version of the profile.
     */
    public int getMinorVersion() {
    byte[] theHeader;
    
        theHeader = getData(icSigHead); /* getData will activate deferred
                                           profiles if necessary */

        return (int) theHeader[9];
    }

    /**
     * Returns the profile class.
     * @return One of the predefined profile class constants.
     */
    public int getProfileClass() {
    byte[] theHeader;
    int theClassSig, theClass;
    
        if (deferralInfo != null) {
            return deferralInfo.profileClass; /* Need to have this info for
                                                 ICC_ColorSpace without
                                                 causing a deferred profile
                                                 to be loaded */
        }

        theHeader = getData(icSigHead);

        theClassSig = intFromBigEndian (theHeader, icHdrDeviceClass);
                
        switch (theClassSig) {
        case icSigInputClass:
            theClass = CLASS_INPUT;
            break;

        case icSigDisplayClass:
            theClass = CLASS_DISPLAY;
            break;

        case icSigOutputClass:
            theClass = CLASS_OUTPUT;
            break;

        case icSigLinkClass:
            theClass = CLASS_DEVICELINK;
            break;

        case icSigColorSpaceClass:
            theClass = CLASS_COLORSPACECONVERSION;
            break;

        case icSigAbstractClass:
            theClass = CLASS_ABSTRACT;
            break;

        case icSigNamedColorClass:
            theClass = CLASS_NAMEDCOLOR;
            break;

        default:
            throw new IllegalArgumentException("Unknown profile class");
        }
        
        return theClass;
    }

    /**
     * Returns the color space type.  Returns one of the color space type
     * constants defined by the ColorSpace class.  This is the
     * "input" color space of the profile.  The type defines the
     * number of components of the color space and the interpretation,
     * e.g. TYPE_RGB identifies a color space with three components - red,
     * green, and blue.  It does not define the particular color
     * characteristics of the space, e.g. the chromaticities of the
     * primaries.
     * @return One of the color space type constants defined in the
     * <CODE>ColorSpace</CODE> class.
     */
    public int getColorSpaceType() {
        if (deferralInfo != null) {
            return deferralInfo.colorSpaceType; /* Need to have this info for
                                                   ICC_ColorSpace without
                                                   causing a deferred profile
                                                   to be loaded */
        }
        return    getColorSpaceType(ID);
    }
    
    static int getColorSpaceType(long profileID) {
    byte[] theHeader;
    int theColorSpaceSig, theColorSpace;
    
        theHeader = getData(profileID, icSigHead);
        theColorSpaceSig = intFromBigEndian(theHeader, icHdrColorSpace);
        theColorSpace = iccCStoJCS (theColorSpaceSig);
        return theColorSpace;
    }

    /**
     * Returns the color space type of the Profile Connection Space (PCS).
     * Returns one of the color space type constants defined by the
     * ColorSpace class.  This is the "output" color space of the
     * profile.  For an input, display, or output profile useful
     * for tagging colors or images, this will be either TYPE_XYZ or
     * TYPE_Lab and should be interpreted as the corresponding specific
     * color space defined in the ICC specification.  For a device
     * link profile, this could be any of the color space type constants.
     * @return One of the color space type constants defined in the
     * <CODE>ColorSpace</CODE> class.
     */
    public int getPCSType() {
        if (ProfileDeferralMgr.deferring) {
            ProfileDeferralMgr.activateProfiles();
        }
        return getPCSType(ID);
    }
    
    
    static int getPCSType(long profileID) {
    byte[] theHeader;
    int thePCSSig, thePCS;
    
        theHeader = getData(profileID, icSigHead);
        thePCSSig = intFromBigEndian(theHeader, icHdrPcs);
        thePCS = iccCStoJCS(thePCSSig);
        return thePCS;
    }


    /**
     * Write this ICC_Profile to a file.
     *  
     * @param fileName The file to write the profile data to.
     *
     * @exception IOException If the file cannot be opened for writing
     * or an I/O error occurs while writing to the file.
     */
    public void write(String fileName) throws IOException {
    FileOutputStream outputFile;
    byte profileData[];

        profileData = getData(); /* this will activate deferred
                                    profiles if necessary */
        outputFile = new FileOutputStream(fileName);
        outputFile.write(profileData);
        outputFile.close ();
    }


    /**
     * Write this ICC_Profile to an OutputStream.
     *
     * @param s The stream to write the profile data to.
     *
     * @exception IOException If an I/O error occurs while writing to the
     * stream.
     */
    public void write(OutputStream s) throws IOException {
    byte profileData[];

        profileData = getData(); /* this will activate deferred
                                    profiles if necessary */
        s.write(profileData);
    }


    /**
     * Returns a byte array corresponding to the data of this ICC_Profile.
     * @return A byte array that contains the profile data.
     * @see #setData(int, byte[])
     */
    public byte[] getData() {
    int[] profileSize = new int [1];
    byte[] profileData;

        if (ProfileDeferralMgr.deferring) {
            ProfileDeferralMgr.activateProfiles();
        }

        /* get the number of bytes needed for this profile */
        CMM.checkStatus(CMM.cmmGetProfileSize(ID, profileSize));

        profileData = new byte [profileSize[0]];

        /* get the data for the profile */
        CMM.checkStatus(CMM.cmmGetProfileData(ID, profileData));

        return profileData;
    }


    /**
     * Returns a particular tagged data element from the profile as
     * a byte array.  Elements are identified by signatures
     * as defined in the ICC specification.  The signature
     * icSigHead can be used to get the header.  This method is useful
     * for advanced applets or applications which need to access
     * profile data directly.
     *  
     * @param tagSignature The ICC tag signature for the data element you
     * want to get.
     * 
     * @return A byte array that contains the tagged data element. Returns
     * <code>null</code> if the specified tag doesn't exist.
     * @see #setData(int, byte[])
     */
    public byte[] getData(int tagSignature) {

        if (ProfileDeferralMgr.deferring) {
            ProfileDeferralMgr.activateProfiles();
        }

        return getData(ID, tagSignature);
    }
    

    static byte[] getData(long profileID, int tagSignature) {
    int[] tagSize = new int [1];
    byte[] tagData;

	try {
            /* get the number of bytes needed for this tag */
            CMM.checkStatus(CMM.cmmGetTagSize(profileID, tagSignature,
                                              tagSize));

            tagData = new byte[tagSize[0]]; /* get an array for the tag */

            /* get the tag's data */
            CMM.checkStatus(CMM.cmmGetTagData(profileID, tagSignature,
                                              tagData));
	} catch(CMMException c) {
	    tagData = null;
	}

        return tagData;
    }

    /**
     * Sets a particular tagged data element in the profile from
     * a byte array.  This method is useful
     * for advanced applets or applications which need to access
     * profile data directly.
     *                                        
     * @param tagSignature The ICC tag signature for the data element
     * you want to set.
     * @param tagData the data to set for the specified tag signature
     * @see #getData
     */
    public void setData(int tagSignature, byte[] tagData) {

        if (ProfileDeferralMgr.deferring) {
            ProfileDeferralMgr.activateProfiles();
        }

        CMM.checkStatus(CMM.cmmSetTagData(ID, tagSignature, tagData));
    }

    /**
     * Sets the rendering intent of the profile.
     * This is used to select the proper transform from a profile that
     * has multiple transforms.
     */
    void setRenderingIntent(int renderingIntent) {
        byte[] theHeader = getData(icSigHead);/* getData will activate deferred
                                                 profiles if necessary */
        intToBigEndian (renderingIntent, theHeader, icHdrRenderingIntent);
                                                 /* set the rendering intent */
        setData (icSigHead, theHeader);
    }


    /**
     * Returns the rendering intent of the profile.
     * This is used to select the proper transform from a profile that
     * has multiple transforms.  It is typically set in a source profile
     * to select a transform from an output profile.
     */
    int getRenderingIntent() {
        byte[] theHeader = getData(icSigHead);/* getData will activate deferred
                                                 profiles if necessary */
        
        int renderingIntent = intFromBigEndian(theHeader, icHdrRenderingIntent);
                                                 /* set the rendering intent */
        return renderingIntent;
    }


    /**
     * Returns the number of color components in the "input" color
     * space of this profile.  For example if the color space type
     * of this profile is TYPE_RGB, then this method will return 3.
     *
     * @return The number of color components in the profile's input
     * color space.
     *
     * @throws ProfileDataException if color space is in the profile
     *         is invalid
     */
    public int getNumComponents() {
    byte[]    theHeader;
    int    theColorSpaceSig, theNumComponents;
    
        if (deferralInfo != null) {
            return deferralInfo.numComponents; /* Need to have this info for
                                                  ICC_ColorSpace without
                                                  causing a deferred profile
                                                  to be loaded */
        }
        theHeader = getData(icSigHead);

        theColorSpaceSig = intFromBigEndian (theHeader, icHdrColorSpace);

        switch (theColorSpaceSig) {
        case icSigGrayData:
            theNumComponents = 1;
            break;

        case icSigSpace2CLR:
            theNumComponents = 2;
            break;

        case icSigXYZData:
        case icSigLabData:
        case icSigLuvData:
        case icSigYCbCrData:
        case icSigYxyData:
        case icSigRgbData:
        case icSigHsvData:
        case icSigHlsData:
        case icSigCmyData:
        case icSigSpace3CLR:
            theNumComponents = 3;
            break;

        case icSigCmykData:
        case icSigSpace4CLR:
            theNumComponents = 4;
            break;

        case icSigSpace5CLR:
            theNumComponents = 5;
            break;

        case icSigSpace6CLR:
            theNumComponents = 6;
            break;

        case icSigSpace7CLR:
            theNumComponents = 7;
            break;

        case icSigSpace8CLR:
            theNumComponents = 8;
            break;

        case icSigSpace9CLR:
            theNumComponents = 9;
            break;

        case icSigSpaceACLR:
            theNumComponents = 10;
            break;

        case icSigSpaceBCLR:
            theNumComponents = 11;
            break;

        case icSigSpaceCCLR:
            theNumComponents = 12;
            break;

        case icSigSpaceDCLR:
            theNumComponents = 13;
            break;

        case icSigSpaceECLR:
            theNumComponents = 14;
            break;

        case icSigSpaceFCLR:
            theNumComponents = 15;
            break;

        default:
            throw new ProfileDataException ("invalid ICC color space");
        }
        
        return theNumComponents;
    }


    /**
     * Returns a float array of length 3 containing the X, Y, and Z
     * components of the mediaWhitePointTag in the ICC profile.
     */
    float[] getMediaWhitePoint() {
        return getXYZTag(icSigMediaWhitePointTag);
                                           /* get the media white point tag */
    }


    /**
     * Returns a float array of length 3 containing the X, Y, and Z
     * components encoded in an XYZType tag.
     */
    float[] getXYZTag(int theTagSignature) {
    byte[] theData;
    float[] theXYZNumber;
    int i1, i2, theS15Fixed16;
    
        theData = getData(theTagSignature); /* get the tag data */
                                            /* getData will activate deferred
                                               profiles if necessary */
        
        theXYZNumber = new float [3];        /* array to return */

        /* convert s15Fixed16Number to float */
        for (i1 = 0, i2 = icXYZNumberX; i1 < 3; i1++, i2 += 4) {
            theS15Fixed16 = intFromBigEndian(theData, i2);
            theXYZNumber [i1] = ((float) theS15Fixed16) / 65536.0f;
        }
        return theXYZNumber;
    }


    /**
     * Returns a gamma value representing a tone reproduction
     * curve (TRC).  If the profile represents the TRC as a table rather