lcms2: Import upstream release 2.14.

libs/lcms2/include/lcms2.h

@@ -23,7 +23,7 @@
 //
 //---------------------------------------------------------------------------------
 //
-// Version 2.13.1
+// Version 2.14
 //
 
 #ifndef _lcms2_H
@@ -81,7 +81,7 @@ extern "C" {
 #endif
 
 // Version/release
-#define LCMS_VERSION        2131
+#define LCMS_VERSION        2140
 
 // I will give the chance of redefining basic types for compilers that are not fully C99 compliant
 #ifndef CMS_BASIC_TYPES_ALREADY_DEFINED
@@ -152,7 +152,7 @@ typedef double               cmsFloat64Number;
 #endif
 
 // Handle "register" keyword
-#if defined(CMS_NO_REGISTER_KEYWORD) && !defined(CMS_DLL) && !defined(CMS_DLL_BUILD) 
+#if defined(CMS_NO_REGISTER_KEYWORD)
 #  define CMSREGISTER
 #else
 #  define CMSREGISTER register
@@ -290,6 +290,7 @@ typedef int                  cmsBool;
 // Base ICC type definitions
 typedef enum {
     cmsSigChromaticityType                  = 0x6368726D,  // 'chrm'
+    cmsSigcicpType                          = 0x63696370,  // 'cicp'
     cmsSigColorantOrderType                 = 0x636C726F,  // 'clro'
     cmsSigColorantTableType                 = 0x636C7274,  // 'clrt'
     cmsSigCrdInfoType                       = 0x63726469,  // 'crdi'
@@ -401,6 +402,7 @@ typedef enum {
     cmsSigViewingConditionsTag              = 0x76696577,  // 'view'
     cmsSigVcgtTag                           = 0x76636774,  // 'vcgt'
     cmsSigMetaTag                           = 0x6D657461,  // 'meta'
+    cmsSigcicpTag                           = 0x63696370,  // 'cicp'
     cmsSigArgyllArtsTag                     = 0x61727473   // 'arts'
 
 } cmsTagSignature;
@@ -1038,6 +1040,16 @@ typedef struct {
 
     } cmsICCViewingConditions;
 
+typedef struct {
+    cmsUInt8Number  ColourPrimaries;            // Recommendation ITU-T H.273
+    cmsUInt8Number  TransferCharacteristics;    //  (ISO/IEC 23091-2)
+    cmsUInt8Number  MatrixCoefficients;
+    cmsUInt8Number  VideoFullRangeFlag;
+
+} cmsVideoSignalType;
+
+
+
 // Get LittleCMS version (for shared objects) -----------------------------------------------------------------------------
 
 CMSAPI int               CMSEXPORT cmsGetEncodedCMMversion(void);
@@ -1520,8 +1532,12 @@ CMSAPI cmsBool           CMSEXPORT cmsIsCLUT(cmsHPROFILE hProfile, cmsUInt32Numb
 CMSAPI cmsColorSpaceSignature   CMSEXPORT _cmsICCcolorSpace(int OurNotation);
 CMSAPI int                      CMSEXPORT _cmsLCMScolorSpace(cmsColorSpaceSignature ProfileSpace);
 
+// Deprecated, use cmsChannelsOfColorSpace instead
 CMSAPI cmsUInt32Number   CMSEXPORT cmsChannelsOf(cmsColorSpaceSignature ColorSpace);
 
+// Get number of channels of color space or -1 if color space is not listed/supported
+CMSAPI cmsInt32Number CMSEXPORT cmsChannelsOfColorSpace(cmsColorSpaceSignature ColorSpace);
+
 // Build a suitable formatter for the colorspace of this profile. nBytes=1 means 8 bits, nBytes=2 means 16 bits. 
 CMSAPI cmsUInt32Number   CMSEXPORT cmsFormatterForColorspaceOfProfile(cmsHPROFILE hProfile, cmsUInt32Number nBytes, cmsBool lIsFloat);
 CMSAPI cmsUInt32Number   CMSEXPORT cmsFormatterForPCSOfProfile(cmsHPROFILE hProfile, cmsUInt32Number nBytes, cmsBool lIsFloat);

libs/lcms2/include/lcms2_plugin.h

@@ -209,6 +209,7 @@ typedef void*    (* _cmsDupUserDataFn)(cmsContext ContextID, const void* Data);
 #define cmsPluginOptimizationSig             0x6F707448     // 'optH'
 #define cmsPluginTransformSig                0x7A666D48     // 'xfmH'
 #define cmsPluginMutexSig                    0x6D747A48     // 'mtxH'
+#define cmsPluginParalellizationSig          0x70726C48     // 'prlH
 
 typedef struct _cmsPluginBaseStruct {
 
@@ -596,7 +597,7 @@ typedef void     (* _cmsTransformFn)(struct _cmstransform_struct *CMMcargo,   //
                                      const void* InputBuffer,
                                      void* OutputBuffer,
                                      cmsUInt32Number Size,
-                                     cmsUInt32Number Stride);                 // Stride in bytes to the next plana in planar formats
+                                     cmsUInt32Number Stride);                 // Stride in bytes to the next plane in planar formats
 
 
 typedef void     (*_cmsTransform2Fn)(struct _cmstransform_struct *CMMcargo,
@@ -669,6 +670,25 @@ CMSAPI void    CMSEXPORT _cmsDestroyMutex(cmsContext ContextID, void* mtx);
 CMSAPI cmsBool CMSEXPORT _cmsLockMutex(cmsContext ContextID, void* mtx);
 CMSAPI void    CMSEXPORT _cmsUnlockMutex(cmsContext ContextID, void* mtx);
 
+//----------------------------------------------------------------------------------------------------------
+// Parallelization
+
+CMSAPI _cmsTransform2Fn CMSEXPORT _cmsGetTransformWorker(struct _cmstransform_struct* CMMcargo);
+CMSAPI cmsInt32Number   CMSEXPORT _cmsGetTransformMaxWorkers(struct _cmstransform_struct* CMMcargo);
+CMSAPI cmsUInt32Number  CMSEXPORT _cmsGetTransformWorkerFlags(struct _cmstransform_struct* CMMcargo);
+
+// Let's plug-in to guess the best number of workers
+#define CMS_GUESS_MAX_WORKERS -1
+
+typedef struct {
+    cmsPluginBase       base;
+
+    cmsInt32Number      MaxWorkers;       // Number of starts to do as maximum
+    cmsUInt32Number     WorkerFlags;      // Reserved
+    _cmsTransform2Fn    SchedulerFn;      // callback to setup functions
+
+}  cmsPluginParalellization;
+
 
 #ifndef CMS_USE_CPP_API
 #   ifdef __cplusplus

libs/lcms2/src/cmscnvrt.c

@@ -386,7 +386,7 @@ cmsBool ComputeConversion(cmsUInt32Number i,
 
         if (BPC) {
 
-            cmsCIEXYZ BlackPointIn, BlackPointOut;
+            cmsCIEXYZ BlackPointIn = { 0, 0, 0}, BlackPointOut = { 0, 0, 0 };
 
             cmsDetectBlackPoint(&BlackPointIn,  hProfiles[i-1], Intent, 0);
             cmsDetectDestinationBlackPoint(&BlackPointOut, hProfiles[i], Intent, 0);
@@ -630,7 +630,7 @@ cmsPipeline* DefaultICCintents(cmsContext       ContextID,
                   ColorSpaceOut == cmsSigRgbData ||
                   ColorSpaceOut == cmsSigCmykData) {
 
-                  cmsStage* clip = _cmsStageClipNegatives(Result->ContextID, cmsChannelsOf(ColorSpaceOut));
+                  cmsStage* clip = _cmsStageClipNegatives(Result->ContextID, cmsChannelsOfColorSpace(ColorSpaceOut));
                   if (clip == NULL) goto Error;
 
                   if (!cmsPipelineInsertStage(Result, cmsAT_END, clip))

libs/lcms2/src/cmserr.c

@@ -613,7 +613,6 @@ cmsBool  _cmsRegisterMutexPlugin(cmsContext ContextID, cmsPluginBase* Data)
     if (Plugin ->CreateMutexPtr == NULL || Plugin ->DestroyMutexPtr == NULL || 
         Plugin ->LockMutexPtr == NULL || Plugin ->UnlockMutexPtr == NULL) return FALSE;
 
-
     ctx->CreateMutexPtr  = Plugin->CreateMutexPtr;
     ctx->DestroyMutexPtr = Plugin ->DestroyMutexPtr;
     ctx ->LockMutexPtr   = Plugin ->LockMutexPtr;
@@ -661,3 +660,46 @@ void CMSEXPORT _cmsUnlockMutex(cmsContext ContextID, void* mtx)
         ptr ->UnlockMutexPtr(ContextID, mtx);
     }
 }
+
+// The global Context0 storage for parallelization plug-in
+ _cmsParallelizationPluginChunkType _cmsParallelizationPluginChunk = { 0 };
+
+// Allocate parallelization container.
+void _cmsAllocParallelizationPluginChunk(struct _cmsContext_struct* ctx,
+                                         const struct _cmsContext_struct* src)
+{
+    if (src != NULL) {
+        void* from = src->chunks[ParallelizationPlugin];
+        ctx->chunks[ParallelizationPlugin] = _cmsSubAllocDup(ctx->MemPool, from, sizeof(_cmsParallelizationPluginChunkType));
+    }
+    else {
+        _cmsParallelizationPluginChunkType ParallelizationPluginChunk = { 0 };
+        ctx->chunks[ParallelizationPlugin] = _cmsSubAllocDup(ctx->MemPool, &ParallelizationPluginChunk, sizeof(_cmsParallelizationPluginChunkType));
+    }
+}
+
+// Register parallel processing
+cmsBool _cmsRegisterParallelizationPlugin(cmsContext ContextID, cmsPluginBase* Data)
+{
+    cmsPluginParalellization* Plugin = (cmsPluginParalellization*)Data;
+    _cmsParallelizationPluginChunkType* ctx = (_cmsParallelizationPluginChunkType*)_cmsContextGetClientChunk(ContextID, ParallelizationPlugin);
+
+    if (Data == NULL) {
+
+        // No parallelization routines
+        ctx->MaxWorkers = 0;
+        ctx->WorkerFlags = 0;
+        ctx->SchedulerFn = NULL;
+        return TRUE;
+    }
+
+    // callback is required
+    if (Plugin->SchedulerFn == NULL) return FALSE;
+
+    ctx->MaxWorkers = Plugin->MaxWorkers;
+    ctx->WorkerFlags = Plugin->WorkerFlags;
+    ctx->SchedulerFn = Plugin->SchedulerFn;
+
+    // All is ok
+    return TRUE;
+}

libs/lcms2/src/cmsgamma.c

@@ -427,8 +427,8 @@ cmsFloat64Number DefaultEvalParametricFn(cmsInt32Number Type, const cmsFloat64Nu
 
 
     // IEC 61966-3
-    // Y = (aX + b)^Gamma | X <= -b/a
-    // Y = c              | else
+    // Y = (aX + b)^Gamma + c | X <= -b/a
+    // Y = c                  | else
     case 3:
     {
         if (fabs(Params[1]) < MATRIX_DET_TOLERANCE)
@@ -462,7 +462,8 @@ cmsFloat64Number DefaultEvalParametricFn(cmsInt32Number Type, const cmsFloat64Nu
     // X=-b/a                   | (Y<c)
     case -3:
     {
-        if (fabs(Params[1]) < MATRIX_DET_TOLERANCE)
+        if (fabs(Params[0]) < MATRIX_DET_TOLERANCE ||
+            fabs(Params[1]) < MATRIX_DET_TOLERANCE)
         {
             Val = 0;
         }
@@ -601,7 +602,8 @@ cmsFloat64Number DefaultEvalParametricFn(cmsInt32Number Type, const cmsFloat64Nu
     // ((Y - c) ^1/Gamma - b) / a
     case -6:
     {
-        if (fabs(Params[1]) < MATRIX_DET_TOLERANCE)
+        if (fabs(Params[0]) < MATRIX_DET_TOLERANCE ||
+            fabs(Params[1]) < MATRIX_DET_TOLERANCE)
         {
             Val = 0;
         }
@@ -1473,6 +1475,9 @@ cmsFloat64Number CMSEXPORT cmsEstimateGamma(const cmsToneCurve* t, cmsFloat64Num
         }
     }
 
+    // We need enough valid samples
+    if (n <= 1) return -1.0;
+
     // Take a look on SD to see if gamma isn't exponential at all
     Std = sqrt((n * sum2 - sum * sum) / (n*(n-1)));
 

libs/lcms2/src/cmsgmt.c

@@ -297,7 +297,8 @@ cmsPipeline* _cmsCreateGamutCheckPipeline(cmsContext ContextID,
     cmsStage* CLUT;
     cmsUInt32Number dwFormat;
     GAMUTCHAIN Chain;
-    cmsUInt32Number nChannels, nGridpoints;
+    cmsUInt32Number nGridpoints;
+    cmsInt32Number nChannels;
     cmsColorSpaceSignature ColorSpace;
     cmsUInt32Number i;
     cmsHPROFILE ProfileList[256];
@@ -346,8 +347,7 @@ cmsPipeline* _cmsCreateGamutCheckPipeline(cmsContext ContextID,
 
 
     ColorSpace  = cmsGetColorSpace(hGamut);
-
-    nChannels   = cmsChannelsOf(ColorSpace);
+    nChannels   = cmsChannelsOfColorSpace(ColorSpace);
     nGridpoints = _cmsReasonableGridpointsByColorspace(ColorSpace, cmsFLAGS_HIGHRESPRECALC);
     dwFormat    = (CHANNELS_SH(nChannels)|BYTES_SH(2));
 
@@ -472,6 +472,9 @@ cmsFloat64Number CMSEXPORT cmsDetectTAC(cmsHPROFILE hProfile)
     // Create a fake formatter for result
     dwFormatter = cmsFormatterForColorspaceOfProfile(hProfile, 4, TRUE);
 
+    // Unsupported color space?
+    if (dwFormatter == 0) return 0;
+
     bp.nOutputChans = T_CHANNELS(dwFormatter);
     bp.MaxTAC = 0;    // Initial TAC is 0
 
@@ -619,6 +622,8 @@ cmsFloat64Number CMSEXPORT cmsDetectRGBProfileGamma(cmsHPROFILE hProfile, cmsFlo
 
     ContextID = cmsGetProfileContextID(hProfile);
     hXYZ = cmsCreateXYZProfileTHR(ContextID);
+    if (hXYZ == NULL)
+        return -1;
     xform = cmsCreateTransformTHR(ContextID, hProfile, TYPE_RGB_16, hXYZ, TYPE_XYZ_DBL, 
                                     INTENT_RELATIVE_COLORIMETRIC, cmsFLAGS_NOOPTIMIZE);
 

libs/lcms2/src/cmshalf.c

@@ -377,7 +377,7 @@ static const cmsUInt32Number Mantissa[2048] = {
 0x387fc000, 0x387fe000
 };
 
-static cmsUInt16Number Offset[64] = {
+static const cmsUInt16Number Offset[64] = {
 0x0000, 0x0400, 0x0400, 0x0400, 0x0400, 0x0400,
 0x0400, 0x0400, 0x0400, 0x0400, 0x0400, 0x0400,
 0x0400, 0x0400, 0x0400, 0x0400, 0x0400, 0x0400,

libs/lcms2/src/cmsio1.c

@@ -322,10 +322,8 @@ cmsPipeline* CMSEXPORT _cmsReadInputLUT(cmsHPROFILE hProfile, cmsUInt32Number In
         if (nc == NULL) return NULL;
 
         Lut = cmsPipelineAlloc(ContextID, 0, 0);
-        if (Lut == NULL) {
-            cmsFreeNamedColorList(nc);
+        if (Lut == NULL)
             return NULL;
-        }
 
         if (!cmsPipelineInsertStage(Lut, cmsAT_BEGIN, _cmsStageAllocNamedColor(nc, TRUE)) ||
             !cmsPipelineInsertStage(Lut, cmsAT_END, _cmsStageAllocLabV2ToV4(ContextID))) {
@@ -740,7 +738,6 @@ cmsPipeline* CMSEXPORT _cmsReadDevicelinkLUT(cmsHPROFILE hProfile, cmsUInt32Numb
         return Lut;
     Error:
         cmsPipelineFree(Lut);
-        cmsFreeNamedColorList(nc);
         return NULL;
     }
 

libs/lcms2/src/cmslut.c

@@ -467,7 +467,7 @@ cmsUInt32Number CubeSize(const cmsUInt32Number Dims[], cmsUInt32Number b)
     for (rv = 1; b > 0; b--) {
 
         dim = Dims[b-1];
-        if (dim == 0) return 0;  // Error
+        if (dim <= 1) return 0;  // Error
 
         rv *= dim;
 

libs/lcms2/src/cmsnamed.c

@@ -542,8 +542,12 @@ cmsBool  GrowNamedColorList(cmsNAMEDCOLORLIST* v)
 // Allocate a list for n elements
 cmsNAMEDCOLORLIST* CMSEXPORT cmsAllocNamedColorList(cmsContext ContextID, cmsUInt32Number n, cmsUInt32Number ColorantCount, const char* Prefix, const char* Suffix)
 {
-    cmsNAMEDCOLORLIST* v = (cmsNAMEDCOLORLIST*) _cmsMallocZero(ContextID, sizeof(cmsNAMEDCOLORLIST));
+    cmsNAMEDCOLORLIST* v;
 
+    if (ColorantCount > cmsMAXCHANNELS)
+        return NULL;
+
+    v = (cmsNAMEDCOLORLIST*)_cmsMallocZero(ContextID, sizeof(cmsNAMEDCOLORLIST));
     if (v == NULL) return NULL;
 
     v ->List      = NULL;

libs/lcms2/src/cmsopt.c

@@ -1517,10 +1517,10 @@ void* DupMatShaper(cmsContext ContextID, const void* Data)
 }
 
 
-// A fast matrix-shaper evaluator for 8 bits. This is a bit ticky since I'm using 1.14 signed fixed point
+// A fast matrix-shaper evaluator for 8 bits. This is a bit tricky since I'm using 1.14 signed fixed point
 // to accomplish some performance. Actually it takes 256x3 16 bits tables and 16385 x 3 tables of 8 bits,
 // in total about 50K, and the performance boost is huge!
-static
+static CMS_NO_SANITIZE
 void MatShaperEval16(CMSREGISTER const cmsUInt16Number In[],
                      CMSREGISTER cmsUInt16Number Out[],
                      CMSREGISTER const void* D)

libs/lcms2/src/cmspack.c

@@ -592,8 +592,11 @@ cmsUInt8Number* UnrollAnyWordsPremul(CMSREGISTER _cmsTRANSFORM* info,
         if (SwapEndian)
             v = CHANGE_ENDIAN(v);
 
-        v = (v << 16) / alpha_factor;
-        if (v > 0xffff) v = 0xffff;
+        if (alpha_factor > 0) {
+
+            v = (v << 16) / alpha_factor;
+            if (v > 0xffff) v = 0xffff;
+        }
 
         wIn[index] = (cmsUInt16Number) (Reverse ? REVERSE_FLAVOR_16(v) : v);
 
@@ -674,8 +677,11 @@ cmsUInt8Number* UnrollPlanarWordsPremul(CMSREGISTER _cmsTRANSFORM* info,
         if (SwapEndian)
             v = CHANGE_ENDIAN(v);
 
-        v = (v << 16) / alpha_factor;
-        if (v > 0xffff) v = 0xffff;
+        if (alpha_factor > 0) {
+
+            v = (v << 16) / alpha_factor;
+            if (v > 0xffff) v = 0xffff;
+        }
 
         wIn[index] = (cmsUInt16Number) (Reverse ? REVERSE_FLAVOR_16(v) : v);
 
@@ -3799,6 +3805,11 @@ cmsFormatter CMSEXPORT _cmsGetFormatter(cmsContext ContextID,
     _cmsFormattersPluginChunkType* ctx = ( _cmsFormattersPluginChunkType*) _cmsContextGetClientChunk(ContextID, FormattersPlugin);
     cmsFormattersFactoryList* f;
 
+    if (T_CHANNELS(Type) == 0) {
+        static const cmsFormatter nullFormatter = { 0 };
+        return nullFormatter;
+    }
+
     for (f =ctx->FactoryList; f != NULL; f = f ->Next) {
 
         cmsFormatter fn = f ->Factory(Type, Dir, dwFlags);
@@ -3833,9 +3844,12 @@ cmsUInt32Number CMSEXPORT cmsFormatterForColorspaceOfProfile(cmsHPROFILE hProfil
 
     cmsColorSpaceSignature ColorSpace      = cmsGetColorSpace(hProfile);
     cmsUInt32Number        ColorSpaceBits  = (cmsUInt32Number) _cmsLCMScolorSpace(ColorSpace);
-    cmsUInt32Number        nOutputChans    = cmsChannelsOf(ColorSpace);
+    cmsInt32Number         nOutputChans    = cmsChannelsOfColorSpace(ColorSpace);
     cmsUInt32Number        Float           = lIsFloat ? 1U : 0;
 
+    // Unsupported color space?
+    if (nOutputChans < 0) return 0;
+
     // Create a fake formatter for result
     return FLOAT_SH(Float) | COLORSPACE_SH(ColorSpaceBits) | BYTES_SH(nBytes) | CHANNELS_SH(nOutputChans);
 }
@@ -3850,6 +3864,9 @@ cmsUInt32Number CMSEXPORT cmsFormatterForPCSOfProfile(cmsHPROFILE hProfile, cmsU
     cmsUInt32Number nOutputChans = cmsChannelsOf(ColorSpace);
     cmsUInt32Number Float = lIsFloat ? 1U : 0;
 
+    // Unsupported color space?
+    if (nOutputChans < 0) return 0;
+
     // Create a fake formatter for result
     return FLOAT_SH(Float) | COLORSPACE_SH(ColorSpaceBits) | BYTES_SH(nBytes) | CHANNELS_SH(nOutputChans);
 }

libs/lcms2/src/cmspcs.c

@@ -874,7 +874,7 @@ int CMSEXPORT _cmsLCMScolorSpace(cmsColorSpaceSignature ProfileSpace)
 }
 
 
-cmsUInt32Number CMSEXPORT cmsChannelsOf(cmsColorSpaceSignature ColorSpace)
+cmsInt32Number CMSEXPORT cmsChannelsOfColorSpace(cmsColorSpaceSignature ColorSpace)
 {
     switch (ColorSpace) {
 
@@ -935,6 +935,16 @@ cmsUInt32Number CMSEXPORT cmsChannelsOf(cmsColorSpaceSignature ColorSpace)
     case cmsSigMCHFData:
     case cmsSig15colorData: return 15;
 
-    default: return 3;
+    default: return -1;
     }
 }
+
+/**
+* DEPRECATED: Provided for compatibility only
+*/
+cmsUInt32Number CMSEXPORT cmsChannelsOf(cmsColorSpaceSignature ColorSpace)
+{
+    int n = cmsChannelsOfColorSpace(ColorSpace);
+    if (n < 0) return 3;
+    return (cmsUInt32Number)n;
+}
\ No newline at end of file

libs/lcms2/src/cmsplugin.c

@@ -168,18 +168,21 @@ cmsBool CMSEXPORT  _cmsReadUInt32Number(cmsIOHANDLER* io, cmsUInt32Number* n)
 
 cmsBool CMSEXPORT  _cmsReadFloat32Number(cmsIOHANDLER* io, cmsFloat32Number* n)
 {
-    cmsUInt32Number tmp;
+    union typeConverter {
+        cmsUInt32Number integer;
+        cmsFloat32Number floating_point;
+    } tmp;
 
     _cmsAssert(io != NULL);
 
-    if (io->Read(io, &tmp, sizeof(cmsUInt32Number), 1) != 1)
+    if (io->Read(io, &tmp.integer, sizeof(cmsUInt32Number), 1) != 1)
         return FALSE;
 
     if (n != NULL) {
 
-        tmp = _cmsAdjustEndianess32(tmp);
-        *n = *(cmsFloat32Number*)(void*)&tmp;
-        
+        tmp.integer = _cmsAdjustEndianess32(tmp.integer);
+        *n = tmp.floating_point;
+
         // Safeguard which covers against absurd values
         if (*n > 1E+20 || *n < -1E+20) return FALSE;
 
@@ -305,13 +308,14 @@ cmsBool CMSEXPORT  _cmsWriteUInt32Number(cmsIOHANDLER* io, cmsUInt32Number n)
 
 cmsBool CMSEXPORT  _cmsWriteFloat32Number(cmsIOHANDLER* io, cmsFloat32Number n)
 {
-    cmsUInt32Number tmp;
-
-    _cmsAssert(io != NULL);
-
-    tmp = *(cmsUInt32Number*) (void*) &n;
-    tmp = _cmsAdjustEndianess32(tmp);
-    if (io -> Write(io, sizeof(cmsUInt32Number), &tmp) != 1)
+    union typeConverter {
+        cmsUInt32Number integer;
+        cmsFloat32Number floating_point;
+    } tmp;
+
+    tmp.floating_point = n;
+    tmp.integer = _cmsAdjustEndianess32(tmp.integer);
+    if (io -> Write(io, sizeof(cmsUInt32Number), &tmp.integer) != 1)
             return FALSE;
 
     return TRUE;
@@ -621,6 +625,10 @@ cmsBool CMSEXPORT cmsPluginTHR(cmsContext id, void* Plug_in)
                     if (!_cmsRegisterMutexPlugin(id, Plugin)) return FALSE;
                     break;
 
+                case cmsPluginParalellizationSig:
+                    if (!_cmsRegisterParallelizationPlugin(id, Plugin)) return FALSE;
+                    break;
+
                 default:
                     cmsSignalError(id, cmsERROR_UNKNOWN_EXTENSION, "Unrecognized plugin type '%X'", Plugin -> Type);
                     return FALSE;
@@ -643,24 +651,25 @@ void CMSEXPORT cmsUnregisterPlugins(void)
 // pointers structure. All global vars are referenced here.
 static struct _cmsContext_struct globalContext = {
 
-    NULL,                              // Not in the linked list
-    NULL,                              // No suballocator
+    NULL,                                // Not in the linked list
+    NULL,                                // No suballocator
     {
-        NULL,                          //  UserPtr,            
-        &_cmsLogErrorChunk,            //  Logger,
-        &_cmsAlarmCodesChunk,          //  AlarmCodes,
-        &_cmsAdaptationStateChunk,     //  AdaptationState, 
-        &_cmsMemPluginChunk,           //  MemPlugin,
-        &_cmsInterpPluginChunk,        //  InterpPlugin,
-        &_cmsCurvesPluginChunk,        //  CurvesPlugin,
-        &_cmsFormattersPluginChunk,    //  FormattersPlugin,
-        &_cmsTagTypePluginChunk,       //  TagTypePlugin,
-        &_cmsTagPluginChunk,           //  TagPlugin,
-        &_cmsIntentsPluginChunk,       //  IntentPlugin,
-        &_cmsMPETypePluginChunk,       //  MPEPlugin,
-        &_cmsOptimizationPluginChunk,  //  OptimizationPlugin,
-        &_cmsTransformPluginChunk,     //  TransformPlugin,
-        &_cmsMutexPluginChunk          //  MutexPlugin
+        NULL,                            //  UserPtr,
+        &_cmsLogErrorChunk,              //  Logger,
+        &_cmsAlarmCodesChunk,            //  AlarmCodes,
+        &_cmsAdaptationStateChunk,       //  AdaptationState,
+        &_cmsMemPluginChunk,             //  MemPlugin,
+        &_cmsInterpPluginChunk,          //  InterpPlugin,
+        &_cmsCurvesPluginChunk,          //  CurvesPlugin,
+        &_cmsFormattersPluginChunk,      //  FormattersPlugin,
+        &_cmsTagTypePluginChunk,         //  TagTypePlugin,
+        &_cmsTagPluginChunk,             //  TagPlugin,
+        &_cmsIntentsPluginChunk,         //  IntentPlugin,
+        &_cmsMPETypePluginChunk,         //  MPEPlugin,
+        &_cmsOptimizationPluginChunk,    //  OptimizationPlugin,
+        &_cmsTransformPluginChunk,       //  TransformPlugin,
+        &_cmsMutexPluginChunk,           //  MutexPlugin,
+        &_cmsParallelizationPluginChunk  //  ParallelizationPlugin
     },
     
     { NULL, NULL, NULL, NULL, NULL, NULL } // The default memory allocator is not used for context 0
@@ -787,6 +796,8 @@ void* _cmsContextGetClientChunk(cmsContext ContextID, _cmsMemoryClient mc)
 // identify which plug-in to unregister.
 void CMSEXPORT cmsUnregisterPluginsTHR(cmsContext ContextID)
 {
+    struct _cmsContext_struct* ctx = _cmsGetContext(ContextID);
+
     _cmsRegisterMemHandlerPlugin(ContextID, NULL);
     _cmsRegisterInterpPlugin(ContextID, NULL);
     _cmsRegisterTagTypePlugin(ContextID, NULL);
@@ -798,6 +809,11 @@ void CMSEXPORT cmsUnregisterPluginsTHR(cmsContext ContextID)
     _cmsRegisterOptimizationPlugin(ContextID, NULL);
     _cmsRegisterTransformPlugin(ContextID, NULL);    
     _cmsRegisterMutexPlugin(ContextID, NULL);
+    _cmsRegisterParallelizationPlugin(ContextID, NULL);
+
+   if (ctx->MemPool != NULL)
+       _cmsSubAllocDestroy(ctx->MemPool);
+   ctx->MemPool = NULL;
 }
 
 
@@ -881,6 +897,7 @@ cmsContext CMSEXPORT cmsCreateContext(void* Plugin, void* UserData)
     _cmsAllocOptimizationPluginChunk(ctx, NULL);
     _cmsAllocTransformPluginChunk(ctx, NULL);
     _cmsAllocMutexPluginChunk(ctx, NULL);
+    _cmsAllocParallelizationPluginChunk(ctx, NULL);
 
     // Setup the plug-ins
     if (!cmsPluginTHR(ctx, Plugin)) {
@@ -944,6 +961,7 @@ cmsContext CMSEXPORT cmsDupContext(cmsContext ContextID, void* NewUserData)
     _cmsAllocOptimizationPluginChunk(ctx, src);
     _cmsAllocTransformPluginChunk(ctx, src);
     _cmsAllocMutexPluginChunk(ctx, src);
+    _cmsAllocParallelizationPluginChunk(ctx, src);
 
     // Make sure no one failed
     for (i=Logger; i < MemoryClientMax; i++) {

libs/lcms2/src/cmssamp.c

@@ -126,6 +126,7 @@ cmsBool  BlackPointAsDarkerColorant(cmsHPROFILE    hInput,
     // Force it to be neutral, clip to max. L* of 50
     Lab.a = Lab.b = 0;
     if (Lab.L > 50) Lab.L = 50;
+    if (Lab.L < 0) Lab.L = 0;
 
     // Free the resources
     cmsDeleteTransform(xform);
@@ -322,6 +323,7 @@ cmsFloat64Number RootOfLeastSquaresFitQuadraticCurve(int n, cmsFloat64Number x[]
 
     if (fabs(a) < 1.0E-10) {
     
+        if (fabs(b) < 1.0E-10) return 0;
         return cmsmin(0, cmsmax(50, -c/b ));
     }
     else {
@@ -332,7 +334,11 @@ cmsFloat64Number RootOfLeastSquaresFitQuadraticCurve(int n, cmsFloat64Number x[]
          }
          else {
 
-             double rt = (-b + sqrt(d)) / (2.0 * a);
+             double rt;
+
+             if (fabs(a) < 1.0E-10) return 0;
+
+             rt = (-b + sqrt(d)) / (2.0 * a);
 
              return cmsmax(0, cmsmin(50, rt));
          }

libs/lcms2/src/cmsvirt.c

@@ -114,7 +114,7 @@ cmsHPROFILE CMSEXPORT cmsCreateRGBProfileTHR(cmsContext ContextID,
     if (!hICC)                          // can't allocate
         return NULL;
 
-    cmsSetProfileVersion(hICC, 4.3);
+    cmsSetProfileVersion(hICC, 4.4);
 
     cmsSetDeviceClass(hICC,      cmsSigDisplayClass);
     cmsSetColorSpace(hICC,       cmsSigRgbData);
@@ -235,7 +235,7 @@ cmsHPROFILE CMSEXPORT cmsCreateGrayProfileTHR(cmsContext ContextID,
     if (!hICC)                          // can't allocate
         return NULL;
 
-    cmsSetProfileVersion(hICC, 4.3);
+    cmsSetProfileVersion(hICC, 4.4);
 
     cmsSetDeviceClass(hICC,      cmsSigDisplayClass);
     cmsSetColorSpace(hICC,       cmsSigGrayData);
@@ -291,13 +291,13 @@ cmsHPROFILE CMSEXPORT cmsCreateLinearizationDeviceLinkTHR(cmsContext ContextID,
 {
     cmsHPROFILE hICC;
     cmsPipeline* Pipeline;
-    cmsUInt32Number nChannels;
+    cmsInt32Number nChannels;
 
     hICC = cmsCreateProfilePlaceholder(ContextID);
     if (!hICC)
         return NULL;
 
-    cmsSetProfileVersion(hICC, 4.3);
+    cmsSetProfileVersion(hICC, 4.4);
 
     cmsSetDeviceClass(hICC,      cmsSigLinkClass);
     cmsSetColorSpace(hICC,       ColorSpace);
@@ -306,7 +306,7 @@ cmsHPROFILE CMSEXPORT cmsCreateLinearizationDeviceLinkTHR(cmsContext ContextID,
     cmsSetHeaderRenderingIntent(hICC,  INTENT_PERCEPTUAL);
 
     // Set up channels
-    nChannels = cmsChannelsOf(ColorSpace);
+    nChannels = cmsChannelsOfColorSpace(ColorSpace);
 
     // Creates a Pipeline with prelinearization step only
     Pipeline = cmsPipelineAlloc(ContextID, nChannels, nChannels);
@@ -397,7 +397,7 @@ cmsHPROFILE CMSEXPORT cmsCreateInkLimitingDeviceLinkTHR(cmsContext ContextID,
     cmsHPROFILE hICC;
     cmsPipeline* LUT;
     cmsStage* CLUT;
-    cmsUInt32Number nChannels;
+    cmsInt32Number nChannels;
 
     if (ColorSpace != cmsSigCmykData) {
         cmsSignalError(ContextID, cmsERROR_COLORSPACE_CHECK, "InkLimiting: Only CMYK currently supported");
@@ -416,7 +416,7 @@ cmsHPROFILE CMSEXPORT cmsCreateInkLimitingDeviceLinkTHR(cmsContext ContextID,
     if (!hICC)                          // can't allocate
         return NULL;
 
-    cmsSetProfileVersion(hICC, 4.3);
+    cmsSetProfileVersion(hICC, 4.4);
 
     cmsSetDeviceClass(hICC,      cmsSigLinkClass);
     cmsSetColorSpace(hICC,       ColorSpace);
@@ -526,7 +526,7 @@ cmsHPROFILE CMSEXPORT cmsCreateLab4ProfileTHR(cmsContext ContextID, const cmsCIE
     hProfile = cmsCreateRGBProfileTHR(ContextID, WhitePoint == NULL ? cmsD50_xyY() : WhitePoint, NULL, NULL);
     if (hProfile == NULL) return NULL;
 
-    cmsSetProfileVersion(hProfile, 4.3);
+    cmsSetProfileVersion(hProfile, 4.4);
 
     cmsSetDeviceClass(hProfile, cmsSigAbstractClass);
     cmsSetColorSpace(hProfile,  cmsSigLabData);
@@ -572,7 +572,7 @@ cmsHPROFILE CMSEXPORT cmsCreateXYZProfileTHR(cmsContext ContextID)
     hProfile = cmsCreateRGBProfileTHR(ContextID, cmsD50_xyY(), NULL, NULL);
     if (hProfile == NULL) return NULL;
 
-    cmsSetProfileVersion(hProfile, 4.3);
+    cmsSetProfileVersion(hProfile, 4.4);
 
     cmsSetDeviceClass(hProfile, cmsSigAbstractClass);
     cmsSetColorSpace(hProfile,  cmsSigXYZData);
@@ -839,7 +839,7 @@ cmsHPROFILE CMSEXPORT cmsCreateNULLProfileTHR(cmsContext ContextID)
     if (!hProfile)                          // can't allocate
         return NULL;
 
-    cmsSetProfileVersion(hProfile, 4.3);
+    cmsSetProfileVersion(hProfile, 4.4);
 
     if (!SetTextTags(hProfile, L"NULL profile built-in")) goto Error;
 
@@ -974,7 +974,7 @@ cmsHPROFILE CreateNamedColorDevicelink(cmsHTRANSFORM xform)
     // Make sure we have proper formatters
     cmsChangeBuffersFormat(xform, TYPE_NAMED_COLOR_INDEX,
         FLOAT_SH(0) | COLORSPACE_SH(_cmsLCMScolorSpace(v ->ExitColorSpace))
-        | BYTES_SH(2) | CHANNELS_SH(cmsChannelsOf(v ->ExitColorSpace)));
+        | BYTES_SH(2) | CHANNELS_SH(cmsChannelsOfColorSpace(v ->ExitColorSpace)));
 
     // Apply the transfor to colorants.
     for (i=0; i < nColors; i++) {
@@ -1062,8 +1062,9 @@ const cmsAllowedLUT* FindCombination(const cmsPipeline* Lut, cmsBool IsV4, cmsTa
 cmsHPROFILE CMSEXPORT cmsTransform2DeviceLink(cmsHTRANSFORM hTransform, cmsFloat64Number Version, cmsUInt32Number dwFlags)
 {
     cmsHPROFILE hProfile = NULL;
-    cmsUInt32Number FrmIn, FrmOut, ChansIn, ChansOut;
-    int ColorSpaceBitsIn, ColorSpaceBitsOut;
+	cmsUInt32Number FrmIn, FrmOut;
+	cmsInt32Number ChansIn, ChansOut;
+	int ColorSpaceBitsIn, ColorSpaceBitsOut;
     _cmsTRANSFORM* xform = (_cmsTRANSFORM*) hTransform;
     cmsPipeline* LUT = NULL;
     cmsStage* mpe;
@@ -1114,8 +1115,8 @@ cmsHPROFILE CMSEXPORT cmsTransform2DeviceLink(cmsHTRANSFORM hTransform, cmsFloat
 
     // Optimize the LUT and precalculate a devicelink
 
-    ChansIn  = cmsChannelsOf(xform -> EntryColorSpace);
-    ChansOut = cmsChannelsOf(xform -> ExitColorSpace);
+    ChansIn  = cmsChannelsOfColorSpace(xform -> EntryColorSpace);
+    ChansOut = cmsChannelsOfColorSpace(xform -> ExitColorSpace);
 
     ColorSpaceBitsIn  = _cmsLCMScolorSpace(xform -> EntryColorSpace);
     ColorSpaceBitsOut = _cmsLCMScolorSpace(xform -> ExitColorSpace);

libs/lcms2/src/cmsxform.c

@@ -781,6 +781,73 @@ cmsUInt32Number CMSEXPORT _cmsGetTransformFlags(struct _cmstransform_struct* CMM
     return CMMcargo->dwOriginalFlags;
 }
 
+// Returns the worker callback for parallelization plug-ins
+_cmsTransform2Fn CMSEXPORT _cmsGetTransformWorker(struct _cmstransform_struct* CMMcargo)
+{
+    _cmsAssert(CMMcargo != NULL);
+    return CMMcargo->Worker;
+}
+
+// This field holds maximum number of workers or -1 to auto
+cmsInt32Number CMSEXPORT _cmsGetTransformMaxWorkers(struct _cmstransform_struct* CMMcargo)
+{
+    _cmsAssert(CMMcargo != NULL);
+    return CMMcargo->MaxWorkers;
+}
+
+// This field is actually unused and reserved
+cmsUInt32Number CMSEXPORT _cmsGetTransformWorkerFlags(struct _cmstransform_struct* CMMcargo)
+{
+    _cmsAssert(CMMcargo != NULL);
+    return CMMcargo->WorkerFlags;
+}
+
+// In the case there is a parallelization plug-in, let it to do its job
+static
+void ParalellizeIfSuitable(_cmsTRANSFORM* p)
+{
+    _cmsParallelizationPluginChunkType* ctx = (_cmsParallelizationPluginChunkType*)_cmsContextGetClientChunk(p->ContextID, ParallelizationPlugin);
+
+    _cmsAssert(p != NULL);
+    if (ctx != NULL && ctx->SchedulerFn != NULL) {
+
+        p->Worker = p->xform;
+        p->xform = ctx->SchedulerFn;
+        p->MaxWorkers = ctx->MaxWorkers;
+        p->WorkerFlags = ctx->WorkerFlags;
+    }
+}
+
+
+/**
+* An empty unroll to avoid a check with NULL on cmsDoTransform()
+*/
+static
+cmsUInt8Number* UnrollNothing(CMSREGISTER _cmsTRANSFORM* info,
+                              CMSREGISTER cmsUInt16Number wIn[],
+                              CMSREGISTER cmsUInt8Number* accum,
+                              CMSREGISTER cmsUInt32Number Stride)
+{
+    return accum;
+
+    cmsUNUSED_PARAMETER(info);
+    cmsUNUSED_PARAMETER(wIn);
+    cmsUNUSED_PARAMETER(Stride);
+}
+
+static
+cmsUInt8Number* PackNothing(CMSREGISTER _cmsTRANSFORM* info,
+                           CMSREGISTER cmsUInt16Number wOut[],
+                           CMSREGISTER cmsUInt8Number* output,
+                           CMSREGISTER cmsUInt32Number Stride)
+{
+    return output;
+
+    cmsUNUSED_PARAMETER(info);
+    cmsUNUSED_PARAMETER(wOut);
+    cmsUNUSED_PARAMETER(Stride);
+}
+
 // Allocate transform struct and set it to defaults. Ask the optimization plug-in about if those formats are proper
 // for separated transforms. If this is the case,
 static
@@ -836,6 +903,7 @@ _cmsTRANSFORM* AllocEmptyTransform(cmsContext ContextID, cmsPipeline* lut,
                            p->xform = _cmsTransform2toTransformAdaptor;
                        }
 
+                       ParalellizeIfSuitable(p);
                        return p;
                    }
                }
@@ -872,8 +940,10 @@ _cmsTRANSFORM* AllocEmptyTransform(cmsContext ContextID, cmsPipeline* lut,
     }
     else {
 
+        // Formats are intended to be changed before use
         if (*InputFormat == 0 && *OutputFormat == 0) {
-            p ->FromInput = p ->ToOutput = NULL;
+            p->FromInput = UnrollNothing;
+            p->ToOutput = PackNothing;
             *dwFlags |= cmsFLAGS_CAN_CHANGE_FORMATTER;
         }
         else {
@@ -890,7 +960,7 @@ _cmsTRANSFORM* AllocEmptyTransform(cmsContext ContextID, cmsPipeline* lut,
                 return NULL;
             }
 
-            BytesPerPixelInput = T_BYTES(p ->InputFormat);
+            BytesPerPixelInput = T_BYTES(*InputFormat);
             if (BytesPerPixelInput == 0 || BytesPerPixelInput >= 2)
                    *dwFlags |= cmsFLAGS_CAN_CHANGE_FORMATTER;
 
@@ -924,6 +994,7 @@ _cmsTRANSFORM* AllocEmptyTransform(cmsContext ContextID, cmsPipeline* lut,
     p ->dwOriginalFlags = *dwFlags;
     p ->ContextID       = ContextID;
     p ->UserData        = NULL;
+    ParalellizeIfSuitable(p);
     return p;
 }
 
@@ -1098,8 +1169,8 @@ cmsHTRANSFORM CMSEXPORT cmsCreateExtendedTransform(cmsContext ContextID,
     }
 
     // Check channel count
-    if ((cmsChannelsOf(EntryColorSpace) != cmsPipelineInputChannels(Lut)) ||
-        (cmsChannelsOf(ExitColorSpace)  != cmsPipelineOutputChannels(Lut))) {
+    if ((cmsChannelsOfColorSpace(EntryColorSpace) != (cmsInt32Number) cmsPipelineInputChannels(Lut)) ||
+        (cmsChannelsOfColorSpace(ExitColorSpace)  != (cmsInt32Number) cmsPipelineOutputChannels(Lut))) {
         cmsPipelineFree(Lut);
         cmsSignalError(ContextID, cmsERROR_NOT_SUITABLE, "Channel count doesn't match. Profile is corrupted");
         return NULL;

libs/lcms2/src/lcms2_internal.h

@@ -283,38 +283,38 @@ typedef CRITICAL_SECTION _cmsMutex;
 
 cmsINLINE int _cmsLockPrimitive(_cmsMutex *m)
 {
-	EnterCriticalSection(m);
-	return 0;
+    EnterCriticalSection(m);
+    return 0;
 }
 
 cmsINLINE int _cmsUnlockPrimitive(_cmsMutex *m)
 {
-	LeaveCriticalSection(m);
-	return 0;
+    LeaveCriticalSection(m);
+    return 0;
 }
-	
+
 cmsINLINE int _cmsInitMutexPrimitive(_cmsMutex *m)
 {
-	InitializeCriticalSection(m);
-	return 0;
+    InitializeCriticalSection(m);
+    return 0;
 }
 
 cmsINLINE int _cmsDestroyMutexPrimitive(_cmsMutex *m)
 {
-	DeleteCriticalSection(m);
-	return 0;
+    DeleteCriticalSection(m);
+    return 0;
 }
 
 cmsINLINE int _cmsEnterCriticalSectionPrimitive(_cmsMutex *m)
 {
-	EnterCriticalSection(m);
-	return 0;
+    EnterCriticalSection(m);
+    return 0;
 }
 
 cmsINLINE int _cmsLeaveCriticalSectionPrimitive(_cmsMutex *m)
 {
-	LeaveCriticalSection(m);
-	return 0;
+    LeaveCriticalSection(m);
+    return 0;
 }
 
 #else
@@ -328,32 +328,32 @@ typedef pthread_mutex_t _cmsMutex;
 
 cmsINLINE int _cmsLockPrimitive(_cmsMutex *m)
 {
-	return pthread_mutex_lock(m);
+    return pthread_mutex_lock(m);
 }
 
 cmsINLINE int _cmsUnlockPrimitive(_cmsMutex *m)
 {
-	return pthread_mutex_unlock(m);
+    return pthread_mutex_unlock(m);
 }
-	
+
 cmsINLINE int _cmsInitMutexPrimitive(_cmsMutex *m)
 {
-	return pthread_mutex_init(m, NULL);
+    return pthread_mutex_init(m, NULL);
 }
 
 cmsINLINE int _cmsDestroyMutexPrimitive(_cmsMutex *m)
 {
-	return pthread_mutex_destroy(m);
+    return pthread_mutex_destroy(m);
 }
 
 cmsINLINE int _cmsEnterCriticalSectionPrimitive(_cmsMutex *m)
 {
-	return pthread_mutex_lock(m);
+    return pthread_mutex_lock(m);
 }
 
 cmsINLINE int _cmsLeaveCriticalSectionPrimitive(_cmsMutex *m)
 {
-	return pthread_mutex_unlock(m);
+    return pthread_mutex_unlock(m);
 }
 
 #endif
@@ -366,37 +366,37 @@ typedef int _cmsMutex;
 cmsINLINE int _cmsLockPrimitive(_cmsMutex *m)
 {
     cmsUNUSED_PARAMETER(m);
-	return 0;
+    return 0;
 }
 
 cmsINLINE int _cmsUnlockPrimitive(_cmsMutex *m)
 {
     cmsUNUSED_PARAMETER(m);
-	return 0;
+    return 0;
 }
-	
+
 cmsINLINE int _cmsInitMutexPrimitive(_cmsMutex *m)
 {
     cmsUNUSED_PARAMETER(m);
-	return 0;
+    return 0;
 }
 
 cmsINLINE int _cmsDestroyMutexPrimitive(_cmsMutex *m)
 {
     cmsUNUSED_PARAMETER(m);
-	return 0;
+    return 0;
 }
 
 cmsINLINE int _cmsEnterCriticalSectionPrimitive(_cmsMutex *m)
 {
     cmsUNUSED_PARAMETER(m);
-	return 0;
+    return 0;
 }
 
 cmsINLINE int _cmsLeaveCriticalSectionPrimitive(_cmsMutex *m)
 {
     cmsUNUSED_PARAMETER(m);
-	return 0;
+    return 0;
 }
 #endif
 
@@ -438,6 +438,9 @@ cmsBool  _cmsRegisterTransformPlugin(cmsContext ContextID, cmsPluginBase* Plugin
 // Mutex
 cmsBool _cmsRegisterMutexPlugin(cmsContext ContextID, cmsPluginBase* Plugin);
 
+// Paralellization
+cmsBool _cmsRegisterParallelizationPlugin(cmsContext ContextID, cmsPluginBase* Plugin);
+
 // ---------------------------------------------------------------------------------------------------------
 
 // Suballocators. 
@@ -485,6 +488,7 @@ typedef enum {
     OptimizationPlugin,
     TransformPlugin,
     MutexPlugin,
+    ParallelizationPlugin,
 
     // Last in list
     MemoryClientMax
@@ -720,6 +724,24 @@ extern  _cmsMutexPluginChunkType _cmsMutexPluginChunk;
 void _cmsAllocMutexPluginChunk(struct _cmsContext_struct* ctx, 
                                         const struct _cmsContext_struct* src);
 
+// Container for parallelization plug-in
+typedef struct {
+
+    cmsInt32Number      MaxWorkers;       // Number of workers to do as maximum
+    cmsInt32Number      WorkerFlags;      // reserved
+    _cmsTransform2Fn    SchedulerFn;      // callback to setup functions
+
+} _cmsParallelizationPluginChunkType;
+
+// The global Context0 storage for parallelization plug-in
+extern  _cmsParallelizationPluginChunkType _cmsParallelizationPluginChunk;
+
+// Allocate parallelization container.
+void _cmsAllocParallelizationPluginChunk(struct _cmsContext_struct* ctx,
+                                         const struct _cmsContext_struct* src);
+
+
+
 // ----------------------------------------------------------------------------------
 // MLU internal representation
 typedef struct {
@@ -1081,6 +1103,11 @@ typedef struct _cmstransform_struct {
     // A way to provide backwards compatibility with full xform plugins
     _cmsTransformFn OldXform;
 
+    // A one-worker transform entry for parallelization
+    _cmsTransform2Fn Worker;
+    cmsInt32Number   MaxWorkers;
+    cmsUInt32Number  WorkerFlags;
+
 } _cmsTRANSFORM;
 
 // Copies extra channels from input to output if the original flags in the transform structure