Exemple #1
0
// Create an output MPE LUT from agiven profile. Version mismatches are handled here
cmsPipeline* _cmsReadOutputLUT(cmsHPROFILE hProfile, int Intent)
{
    cmsTagTypeSignature OriginalType;
    cmsTagSignature tag16    = PCS2Device16[Intent];
    cmsTagSignature tagFloat = PCS2DeviceFloat[Intent];
    cmsContext ContextID     = cmsGetProfileContextID(hProfile);

    if (cmsIsTag(hProfile, tagFloat)) {  // Float tag takes precedence

        // Floating point LUT are always V4, so no adjustment is required
        return cmsPipelineDup((cmsPipeline*) cmsReadTag(hProfile, tagFloat));
    }

    // Revert to perceptual if no tag is found
    if (!cmsIsTag(hProfile, tag16)) {
        tag16 = PCS2Device16[0];
    }

    if (cmsIsTag(hProfile, tag16)) { // Is there any LUT-Based table?

        // Check profile version and LUT type. Do the necessary adjustments if needed

        // First read the tag
        cmsPipeline* Lut = (cmsPipeline*) cmsReadTag(hProfile, tag16);
        if (Lut == NULL) return NULL;

        // After reading it, we have info about the original type
        OriginalType =  _cmsGetTagTrueType(hProfile, tag16);

        // The profile owns the Lut, so we need to copy it
        Lut = cmsPipelineDup(Lut);
        if (Lut == NULL) return NULL;

        // Now it is time for a controversial stuff. I found that for 3D LUTS using 
        // Lab used as indexer space,  trilinear interpolation should be used         
        if (cmsGetPCS(hProfile) == cmsSigLabData)
                             ChangeInterpolationToTrilinear(Lut);       

        // We need to adjust data only for Lab and Lut16 type
        if (OriginalType != cmsSigLut16Type || cmsGetPCS(hProfile) != cmsSigLabData) 
            return Lut;

        // Add a matrix for conversion V4 to V2 Lab PCS
        cmsPipelineInsertStage(Lut, cmsAT_BEGIN, _cmsStageAllocLabV4ToV2(ContextID));
        return Lut;
    }   

    // Lut not found, try to create a matrix-shaper

    // Check if this is a grayscale profile.
     if (cmsGetColorSpace(hProfile) == cmsSigGrayData) {

              // if so, build appropiate conversion tables. 
              // The tables are the PCS iluminant, scaled across GrayTRC
              return BuildGrayOutputPipeline(hProfile);              
    }

    // Not gray, create a normal matrix-shaper 
    return BuildRGBOutputMatrixShaper(hProfile);
}
Exemple #2
0
// Read and create a BRAND NEW MPE LUT from a given profile. All stuff dependent of version, etc
// is adjusted here in order to create a LUT that takes care of all those details
cmsPipeline* _cmsReadInputLUT(cmsHPROFILE hProfile, int Intent)
{
    cmsTagTypeSignature OriginalType;
    cmsTagSignature tag16    = Device2PCS16[Intent];
    cmsTagSignature tagFloat = Device2PCSFloat[Intent];
    cmsContext ContextID = cmsGetProfileContextID(hProfile);

    if (cmsIsTag(hProfile, tagFloat)) {  // Float tag takes precedence

        // Floating point LUT are always V4, so no adjustment is required
        return cmsPipelineDup((cmsPipeline*) cmsReadTag(hProfile, tagFloat));
    }

    // Revert to perceptual if no tag is found
    if (!cmsIsTag(hProfile, tag16)) {
        tag16 = Device2PCS16[0];
    }

    if (cmsIsTag(hProfile, tag16)) { // Is there any LUT-Based table?

        // Check profile version and LUT type. Do the necessary adjustments if needed

        // First read the tag
        cmsPipeline* Lut = (cmsPipeline*) cmsReadTag(hProfile, tag16);
        if (Lut == NULL) return NULL;

        // After reading it, we have now info about the original type
        OriginalType =  _cmsGetTagTrueType(hProfile, tag16);

        // The profile owns the Lut, so we need to copy it
        Lut = cmsPipelineDup(Lut);

        // We need to adjust data only for Lab16 on output
        if (OriginalType != cmsSigLut16Type || cmsGetPCS(hProfile) != cmsSigLabData) 
            return Lut;

        // If the input is Lab, add also a conversion at the begin
        if (cmsGetColorSpace(hProfile) == cmsSigLabData)
            cmsPipelineInsertStage(Lut, cmsAT_BEGIN, _cmsStageAllocLabV4ToV2(ContextID));

        // Add a matrix for conversion V2 to V4 Lab PCS
        cmsPipelineInsertStage(Lut, cmsAT_END, _cmsStageAllocLabV2ToV4(ContextID));
        return Lut;
    }   

    // Lut was not found, try to create a matrix-shaper

    // Check if this is a grayscale profile.
    if (cmsGetColorSpace(hProfile) == cmsSigGrayData) {

        // if so, build appropiate conversion tables. 
        // The tables are the PCS iluminant, scaled across GrayTRC
        return BuildGrayInputMatrixPipeline(hProfile);              
    }

    // Not gray, create a normal matrix-shaper 
    return BuildRGBInputMatrixShaper(hProfile);
}
Exemple #3
0
// This one includes abstract profiles as well. Matrix-shaper cannot be obtained on that device class. The
// tag name here may default to AToB0
cmsPipeline* _cmsReadDevicelinkLUT(cmsHPROFILE hProfile, int Intent)
{
    cmsPipeline* Lut;
    cmsTagTypeSignature OriginalType;
    cmsTagSignature tag16    = Device2PCS16[Intent];
    cmsTagSignature tagFloat = Device2PCSFloat[Intent];
    cmsContext ContextID = cmsGetProfileContextID(hProfile);

    if (cmsIsTag(hProfile, tagFloat)) {  // Float tag takes precedence

        // Floating point LUT are always V4, no adjustment is required
        return cmsPipelineDup((cmsPipeline*) cmsReadTag(hProfile, tagFloat));
    }

    tagFloat = Device2PCSFloat[0];
    if (cmsIsTag(hProfile, tagFloat)) {

        return cmsPipelineDup((cmsPipeline*) cmsReadTag(hProfile, tagFloat));
    }

    if (!cmsIsTag(hProfile, tag16)) {  // Is there any LUT-Based table?

        tag16    = Device2PCS16[0];
        if (!cmsIsTag(hProfile, tag16)) return NULL;
    }

    // Check profile version and LUT type. Do the necessary adjustments if needed

    // Read the tag
    Lut = (cmsPipeline*) cmsReadTag(hProfile, tag16);
    if (Lut == NULL) return NULL;

    // The profile owns the Lut, so we need to copy it
    Lut = cmsPipelineDup(Lut);

    // After reading it, we have info about the original type
    OriginalType =  _cmsGetTagTrueType(hProfile, tag16);

    // We need to adjust data for Lab16 on output
    if (OriginalType != cmsSigLut16Type) return Lut;

    // Here it is possible to get Lab on both sides

    if (cmsGetPCS(hProfile) == cmsSigLabData) {
            cmsPipelineInsertStage(Lut, cmsAT_BEGIN, _cmsStageAllocLabV4ToV2(ContextID));
    }

    if (cmsGetColorSpace(hProfile) == cmsSigLabData) {
            cmsPipelineInsertStage(Lut, cmsAT_END, _cmsStageAllocLabV2ToV4(ContextID));
    }

    return Lut;


}
Exemple #4
0
// This one includes abstract profiles as well. Matrix-shaper cannot be obtained on that device class. The
// tag name here may default to AToB0
cmsPipeline* _cmsReadDevicelinkLUT(cmsHPROFILE hProfile, int Intent)
{
    cmsPipeline* Lut;
    cmsTagTypeSignature OriginalType;
    cmsTagSignature tag16;
    cmsTagSignature tagFloat;
    cmsContext ContextID = cmsGetProfileContextID(hProfile);


    if (Intent < INTENT_PERCEPTUAL || Intent > INTENT_ABSOLUTE_COLORIMETRIC)
        return NULL;

    tag16 = Device2PCS16[Intent];
    tagFloat = Device2PCSFloat[Intent];

    // On named color, take the appropriate tag
    if (cmsGetDeviceClass(hProfile) == cmsSigNamedColorClass) {

        cmsNAMEDCOLORLIST* nc = (cmsNAMEDCOLORLIST*)cmsReadTag(hProfile, cmsSigNamedColor2Tag);

        if (nc == NULL) return NULL;

        Lut = cmsPipelineAlloc(ContextID, 0, 0);
        if (Lut == NULL)
            goto Error;

        if (!cmsPipelineInsertStage(Lut, cmsAT_BEGIN, _cmsStageAllocNamedColor(nc, FALSE)))
            goto Error;

        if (cmsGetColorSpace(hProfile) == cmsSigLabData)
            if (!cmsPipelineInsertStage(Lut, cmsAT_END, _cmsStageAllocLabV2ToV4(ContextID)))
                goto Error;

        return Lut;
    Error:
        cmsPipelineFree(Lut);
        cmsFreeNamedColorList(nc);
        return NULL;
    }


    if (cmsIsTag(hProfile, tagFloat)) {  // Float tag takes precedence

        // Floating point LUT are always V
        return _cmsReadFloatDevicelinkTag(hProfile, tagFloat);
    }

    tagFloat = Device2PCSFloat[0];
    if (cmsIsTag(hProfile, tagFloat)) {

        return cmsPipelineDup((cmsPipeline*)cmsReadTag(hProfile, tagFloat));
    }

    if (!cmsIsTag(hProfile, tag16)) {  // Is there any LUT-Based table?

        tag16 = Device2PCS16[0];
        if (!cmsIsTag(hProfile, tag16)) return NULL;
    }

    // Check profile version and LUT type. Do the necessary adjustments if needed

    // Read the tag
    Lut = (cmsPipeline*)cmsReadTag(hProfile, tag16);
    if (Lut == NULL) return NULL;

    // The profile owns the Lut, so we need to copy it
    Lut = cmsPipelineDup(Lut);
    if (Lut == NULL) return NULL;

    // Now it is time for a controversial stuff. I found that for 3D LUTS using
    // Lab used as indexer space,  trilinear interpolation should be used
    if (cmsGetPCS(hProfile) == cmsSigLabData)
        ChangeInterpolationToTrilinear(Lut);

    // After reading it, we have info about the original type
    OriginalType = _cmsGetTagTrueType(hProfile, tag16);

    // We need to adjust data for Lab16 on output
    if (OriginalType != cmsSigLut16Type) return Lut;

    // Here it is possible to get Lab on both sides

    if (cmsGetColorSpace(hProfile) == cmsSigLabData) {
        if (!cmsPipelineInsertStage(Lut, cmsAT_BEGIN, _cmsStageAllocLabV4ToV2(ContextID)))
            goto Error2;
    }

    if (cmsGetPCS(hProfile) == cmsSigLabData) {
        if (!cmsPipelineInsertStage(Lut, cmsAT_END, _cmsStageAllocLabV2ToV4(ContextID)))
            goto Error2;
    }

    return Lut;

Error2:
    cmsPipelineFree(Lut);
    return NULL;
}
Exemple #5
0
// Read and create a BRAND NEW MPE LUT from a given profile. All stuff dependent of version, etc
// is adjusted here in order to create a LUT that takes care of all those details.
// We add intent = -1 as a way to read matrix shaper always, no matter of other LUT
cmsPipeline* _cmsReadInputLUT(cmsHPROFILE hProfile, int Intent)
{
    cmsTagTypeSignature OriginalType;
    cmsTagSignature tag16;
    cmsTagSignature tagFloat;
    cmsContext ContextID = cmsGetProfileContextID(hProfile);

    // On named color, take the appropriate tag
    if (cmsGetDeviceClass(hProfile) == cmsSigNamedColorClass) {

        cmsPipeline* Lut;
        cmsNAMEDCOLORLIST* nc = (cmsNAMEDCOLORLIST*) cmsReadTag(hProfile, cmsSigNamedColor2Tag);

        if (nc == NULL) return NULL;

        Lut = cmsPipelineAlloc(ContextID, 0, 0);
        if (Lut == NULL) {
            cmsFreeNamedColorList(nc);
            return NULL;
        }

        if (!cmsPipelineInsertStage(Lut, cmsAT_BEGIN, _cmsStageAllocNamedColor(nc, TRUE)) ||
            !cmsPipelineInsertStage(Lut, cmsAT_END, _cmsStageAllocLabV2ToV4(ContextID))) {
            cmsPipelineFree(Lut);
            return NULL;
        }
        return Lut;
    }

    // This is an attempt to reuse this function to retrieve the matrix-shaper as pipeline no
    // matter other LUT are present and have precedence. Intent = -1 means just this.
    if (Intent >= INTENT_PERCEPTUAL && Intent <= INTENT_ABSOLUTE_COLORIMETRIC) {

        tag16 = Device2PCS16[Intent];
        tagFloat = Device2PCSFloat[Intent];

        if (cmsIsTag(hProfile, tagFloat)) {  // Float tag takes precedence

            // Floating point LUT are always V4, but the encoding range is no
            // longer 0..1.0, so we need to add an stage depending on the color space
            return _cmsReadFloatInputTag(hProfile, tagFloat);
        }

        // Revert to perceptual if no tag is found
        if (!cmsIsTag(hProfile, tag16)) {
            tag16 = Device2PCS16[0];
        }

        if (cmsIsTag(hProfile, tag16)) { // Is there any LUT-Based table?

            // Check profile version and LUT type. Do the necessary adjustments if needed

            // First read the tag
            cmsPipeline* Lut = (cmsPipeline*) cmsReadTag(hProfile, tag16);
            if (Lut == NULL) return NULL;

            // After reading it, we have now info about the original type
            OriginalType =  _cmsGetTagTrueType(hProfile, tag16);

            // The profile owns the Lut, so we need to copy it
            Lut = cmsPipelineDup(Lut);

            // We need to adjust data only for Lab16 on output
            if (OriginalType != cmsSigLut16Type || cmsGetPCS(hProfile) != cmsSigLabData)
                return Lut;

            // If the input is Lab, add also a conversion at the begin
            if (cmsGetColorSpace(hProfile) == cmsSigLabData &&
                !cmsPipelineInsertStage(Lut, cmsAT_BEGIN, _cmsStageAllocLabV4ToV2(ContextID)))
                goto Error;

            // Add a matrix for conversion V2 to V4 Lab PCS
            if (!cmsPipelineInsertStage(Lut, cmsAT_END, _cmsStageAllocLabV2ToV4(ContextID)))
                goto Error;

            return Lut;
Error:
            cmsPipelineFree(Lut);
            return NULL;
        }
    }

    // Lut was not found, try to create a matrix-shaper

    // Check if this is a grayscale profile.
    if (cmsGetColorSpace(hProfile) == cmsSigGrayData) {

        // if so, build appropriate conversion tables.
        // The tables are the PCS iluminant, scaled across GrayTRC
        return BuildGrayInputMatrixPipeline(hProfile);
    }

    // Not gray, create a normal matrix-shaper
    return BuildRGBInputMatrixShaper(hProfile);
}
// Does convert a transform into a device link profile
cmsHPROFILE CMSEXPORT cmsTransform2DeviceLink(cmsHTRANSFORM hTransform, cmsFloat64Number Version, cmsUInt32Number dwFlags)
{
    cmsHPROFILE hProfile = NULL;
    cmsUInt32Number FrmIn, FrmOut, ChansIn, ChansOut;
    cmsUInt32Number ColorSpaceBitsIn, ColorSpaceBitsOut;
    _cmsTRANSFORM* xform = (_cmsTRANSFORM*) hTransform;
    cmsPipeline* LUT = NULL;
    cmsStage* mpe;
    cmsContext ContextID = cmsGetTransformContextID(hTransform);
    const cmsAllowedLUT* AllowedLUT;
    cmsTagSignature DestinationTag;
    cmsProfileClassSignature deviceClass; 

    _cmsAssert(hTransform != NULL);

    // Get the first mpe to check for named color
    mpe = cmsPipelineGetPtrToFirstStage(xform ->Lut);

    // Check if is a named color transform
    if (mpe != NULL) {

        if (cmsStageType(mpe) == cmsSigNamedColorElemType) {
            return CreateNamedColorDevicelink(hTransform);
        }
    }

    // First thing to do is to get a copy of the transformation
    LUT = cmsPipelineDup(xform ->Lut);
    if (LUT == NULL) return NULL;

    // Time to fix the Lab2/Lab4 issue.
    if ((xform ->EntryColorSpace == cmsSigLabData) && (Version < 4.0)) {

        if (!cmsPipelineInsertStage(LUT, cmsAT_BEGIN, _cmsStageAllocLabV2ToV4curves(ContextID)))
            goto Error;
    }

    // On the output side too
    if ((xform ->ExitColorSpace) == cmsSigLabData && (Version < 4.0)) {

        if (!cmsPipelineInsertStage(LUT, cmsAT_END, _cmsStageAllocLabV4ToV2(ContextID)))
            goto Error;
    }


    hProfile = cmsCreateProfilePlaceholder(ContextID);
    if (!hProfile) goto Error;                    // can't allocate

    cmsSetProfileVersion(hProfile, Version);

    FixColorSpaces(hProfile, xform -> EntryColorSpace, xform -> ExitColorSpace, dwFlags);

    // Optimize the LUT and precalculate a devicelink

    ChansIn  = cmsChannelsOf(xform -> EntryColorSpace);
    ChansOut = cmsChannelsOf(xform -> ExitColorSpace);

    ColorSpaceBitsIn  = _cmsLCMScolorSpace(xform -> EntryColorSpace);
    ColorSpaceBitsOut = _cmsLCMScolorSpace(xform -> ExitColorSpace);

    FrmIn  = COLORSPACE_SH(ColorSpaceBitsIn) | CHANNELS_SH(ChansIn)|BYTES_SH(2);
    FrmOut = COLORSPACE_SH(ColorSpaceBitsOut) | CHANNELS_SH(ChansOut)|BYTES_SH(2);

    deviceClass = cmsGetDeviceClass(hProfile);

     if (deviceClass == cmsSigOutputClass)
         DestinationTag = cmsSigBToA0Tag;
     else
         DestinationTag = cmsSigAToB0Tag;

    // Check if the profile/version can store the result
    if (dwFlags & cmsFLAGS_FORCE_CLUT)
        AllowedLUT = NULL;
    else
        AllowedLUT = FindCombination(LUT, Version >= 4.0, DestinationTag);

    if (AllowedLUT == NULL) {

        // Try to optimize
        _cmsOptimizePipeline(ContextID, &LUT, xform ->RenderingIntent, &FrmIn, &FrmOut, &dwFlags);
        AllowedLUT = FindCombination(LUT, Version >= 4.0, DestinationTag);

    }

    // If no way, then force CLUT that for sure can be written
    if (AllowedLUT == NULL) {

        dwFlags |= cmsFLAGS_FORCE_CLUT;
        _cmsOptimizePipeline(ContextID, &LUT, xform ->RenderingIntent, &FrmIn, &FrmOut, &dwFlags);

        // Put identity curves if needed
        if (cmsPipelineGetPtrToFirstStage(LUT) ->Type != cmsSigCurveSetElemType)
             if (!cmsPipelineInsertStage(LUT, cmsAT_BEGIN, _cmsStageAllocIdentityCurves(ContextID, ChansIn)))
                 goto Error;

        if (cmsPipelineGetPtrToLastStage(LUT) ->Type != cmsSigCurveSetElemType)
             if (!cmsPipelineInsertStage(LUT, cmsAT_END,   _cmsStageAllocIdentityCurves(ContextID, ChansOut)))
                 goto Error;

        AllowedLUT = FindCombination(LUT, Version >= 4.0, DestinationTag);
    }

    // Somethings is wrong...
    if (AllowedLUT == NULL) {
        goto Error;
    }


    if (dwFlags & cmsFLAGS_8BITS_DEVICELINK)
                     cmsPipelineSetSaveAs8bitsFlag(LUT, TRUE);

    // Tag profile with information
    if (!SetTextTags(hProfile, L"devicelink")) goto Error;

    // Store result
    if (!cmsWriteTag(hProfile, DestinationTag, LUT)) goto Error;


    if (xform -> InputColorant != NULL) {
           if (!cmsWriteTag(hProfile, cmsSigColorantTableTag, xform->InputColorant)) goto Error;
    }

    if (xform -> OutputColorant != NULL) {
           if (!cmsWriteTag(hProfile, cmsSigColorantTableOutTag, xform->OutputColorant)) goto Error;
    }

    if ((deviceClass == cmsSigLinkClass) && (xform ->Sequence != NULL)) {
        if (!_cmsWriteProfileSequence(hProfile, xform ->Sequence)) goto Error;
    }

    // Set the white point
    if (deviceClass == cmsSigInputClass) {
        if (!cmsWriteTag(hProfile, cmsSigMediaWhitePointTag, &xform ->EntryWhitePoint)) goto Error;
    }
    else {
         if (!cmsWriteTag(hProfile, cmsSigMediaWhitePointTag, &xform ->ExitWhitePoint)) goto Error;
    }

  
    // Per 7.2.15 in spec 4.3
    cmsSetHeaderRenderingIntent(hProfile, xform ->RenderingIntent);

    cmsPipelineFree(LUT);
    return hProfile;

Error:
    if (LUT != NULL) cmsPipelineFree(LUT);
    cmsCloseProfile(hProfile);
    return NULL;
}