| //--------------------------------------------------------------------------------- |
| // |
| // Little Color Management System |
| // Copyright (c) 1998-2023 Marti Maria Saguer |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining |
| // a copy of this software and associated documentation files (the "Software"), |
| // to deal in the Software without restriction, including without limitation |
| // the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| // and/or sell copies of the Software, and to permit persons to whom the Software |
| // is furnished to do so, subject to the following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included in |
| // all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO |
| // THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| // |
| //--------------------------------------------------------------------------------- |
| // |
| |
| #include "lcms2_internal.h" |
| |
| |
| // This is the default routine for ICC-style intents. A user may decide to override it by using a plugin. |
| // Supported intents are perceptual, relative colorimetric, saturation and ICC-absolute colorimetric |
| static |
| cmsPipeline* DefaultICCintents(cmsContext ContextID, |
| cmsUInt32Number nProfiles, |
| cmsUInt32Number Intents[], |
| cmsHPROFILE hProfiles[], |
| cmsBool BPC[], |
| cmsFloat64Number AdaptationStates[], |
| cmsUInt32Number dwFlags); |
| |
| //--------------------------------------------------------------------------------- |
| |
| // This is the entry for black-preserving K-only intents, which are non-ICC. Last profile have to be a output profile |
| // to do the trick (no devicelinks allowed at that position) |
| static |
| cmsPipeline* BlackPreservingKOnlyIntents(cmsContext ContextID, |
| cmsUInt32Number nProfiles, |
| cmsUInt32Number Intents[], |
| cmsHPROFILE hProfiles[], |
| cmsBool BPC[], |
| cmsFloat64Number AdaptationStates[], |
| cmsUInt32Number dwFlags); |
| |
| //--------------------------------------------------------------------------------- |
| |
| // This is the entry for black-plane preserving, which are non-ICC. Again, Last profile have to be a output profile |
| // to do the trick (no devicelinks allowed at that position) |
| static |
| cmsPipeline* BlackPreservingKPlaneIntents(cmsContext ContextID, |
| cmsUInt32Number nProfiles, |
| cmsUInt32Number Intents[], |
| cmsHPROFILE hProfiles[], |
| cmsBool BPC[], |
| cmsFloat64Number AdaptationStates[], |
| cmsUInt32Number dwFlags); |
| |
| //--------------------------------------------------------------------------------- |
| |
| |
| // This is a structure holding implementations for all supported intents. |
| typedef struct _cms_intents_list { |
| |
| cmsUInt32Number Intent; |
| char Description[256]; |
| cmsIntentFn Link; |
| struct _cms_intents_list* Next; |
| |
| } cmsIntentsList; |
| |
| |
| // Built-in intents |
| static cmsIntentsList DefaultIntents[] = { |
| |
| { INTENT_PERCEPTUAL, "Perceptual", DefaultICCintents, &DefaultIntents[1] }, |
| { INTENT_RELATIVE_COLORIMETRIC, "Relative colorimetric", DefaultICCintents, &DefaultIntents[2] }, |
| { INTENT_SATURATION, "Saturation", DefaultICCintents, &DefaultIntents[3] }, |
| { INTENT_ABSOLUTE_COLORIMETRIC, "Absolute colorimetric", DefaultICCintents, &DefaultIntents[4] }, |
| { INTENT_PRESERVE_K_ONLY_PERCEPTUAL, "Perceptual preserving black ink", BlackPreservingKOnlyIntents, &DefaultIntents[5] }, |
| { INTENT_PRESERVE_K_ONLY_RELATIVE_COLORIMETRIC, "Relative colorimetric preserving black ink", BlackPreservingKOnlyIntents, &DefaultIntents[6] }, |
| { INTENT_PRESERVE_K_ONLY_SATURATION, "Saturation preserving black ink", BlackPreservingKOnlyIntents, &DefaultIntents[7] }, |
| { INTENT_PRESERVE_K_PLANE_PERCEPTUAL, "Perceptual preserving black plane", BlackPreservingKPlaneIntents, &DefaultIntents[8] }, |
| { INTENT_PRESERVE_K_PLANE_RELATIVE_COLORIMETRIC,"Relative colorimetric preserving black plane", BlackPreservingKPlaneIntents, &DefaultIntents[9] }, |
| { INTENT_PRESERVE_K_PLANE_SATURATION, "Saturation preserving black plane", BlackPreservingKPlaneIntents, NULL } |
| }; |
| |
| |
| // A pointer to the beginning of the list |
| _cmsIntentsPluginChunkType _cmsIntentsPluginChunk = { NULL }; |
| |
| // Duplicates the zone of memory used by the plug-in in the new context |
| static |
| void DupPluginIntentsList(struct _cmsContext_struct* ctx, |
| const struct _cmsContext_struct* src) |
| { |
| _cmsIntentsPluginChunkType newHead = { NULL }; |
| cmsIntentsList* entry; |
| cmsIntentsList* Anterior = NULL; |
| _cmsIntentsPluginChunkType* head = (_cmsIntentsPluginChunkType*) src->chunks[IntentPlugin]; |
| |
| // Walk the list copying all nodes |
| for (entry = head->Intents; |
| entry != NULL; |
| entry = entry ->Next) { |
| |
| cmsIntentsList *newEntry = ( cmsIntentsList *) _cmsSubAllocDup(ctx ->MemPool, entry, sizeof(cmsIntentsList)); |
| |
| if (newEntry == NULL) |
| return; |
| |
| // We want to keep the linked list order, so this is a little bit tricky |
| newEntry -> Next = NULL; |
| if (Anterior) |
| Anterior -> Next = newEntry; |
| |
| Anterior = newEntry; |
| |
| if (newHead.Intents == NULL) |
| newHead.Intents = newEntry; |
| } |
| |
| ctx ->chunks[IntentPlugin] = _cmsSubAllocDup(ctx->MemPool, &newHead, sizeof(_cmsIntentsPluginChunkType)); |
| } |
| |
| void _cmsAllocIntentsPluginChunk(struct _cmsContext_struct* ctx, |
| const struct _cmsContext_struct* src) |
| { |
| if (src != NULL) { |
| |
| // Copy all linked list |
| DupPluginIntentsList(ctx, src); |
| } |
| else { |
| static _cmsIntentsPluginChunkType IntentsPluginChunkType = { NULL }; |
| ctx ->chunks[IntentPlugin] = _cmsSubAllocDup(ctx ->MemPool, &IntentsPluginChunkType, sizeof(_cmsIntentsPluginChunkType)); |
| } |
| } |
| |
| |
| // Search the list for a suitable intent. Returns NULL if not found |
| static |
| cmsIntentsList* SearchIntent(cmsContext ContextID, cmsUInt32Number Intent) |
| { |
| _cmsIntentsPluginChunkType* ctx = ( _cmsIntentsPluginChunkType*) _cmsContextGetClientChunk(ContextID, IntentPlugin); |
| cmsIntentsList* pt; |
| |
| for (pt = ctx -> Intents; pt != NULL; pt = pt -> Next) |
| if (pt ->Intent == Intent) return pt; |
| |
| for (pt = DefaultIntents; pt != NULL; pt = pt -> Next) |
| if (pt ->Intent == Intent) return pt; |
| |
| return NULL; |
| } |
| |
| // Black point compensation. Implemented as a linear scaling in XYZ. Black points |
| // should come relative to the white point. Fills an matrix/offset element m |
| // which is organized as a 4x4 matrix. |
| static |
| void ComputeBlackPointCompensation(const cmsCIEXYZ* BlackPointIn, |
| const cmsCIEXYZ* BlackPointOut, |
| cmsMAT3* m, cmsVEC3* off) |
| { |
| cmsFloat64Number ax, ay, az, bx, by, bz, tx, ty, tz; |
| |
| // Now we need to compute a matrix plus an offset m and of such of |
| // [m]*bpin + off = bpout |
| // [m]*D50 + off = D50 |
| // |
| // This is a linear scaling in the form ax+b, where |
| // a = (bpout - D50) / (bpin - D50) |
| // b = - D50* (bpout - bpin) / (bpin - D50) |
| |
| tx = BlackPointIn->X - cmsD50_XYZ()->X; |
| ty = BlackPointIn->Y - cmsD50_XYZ()->Y; |
| tz = BlackPointIn->Z - cmsD50_XYZ()->Z; |
| |
| ax = (BlackPointOut->X - cmsD50_XYZ()->X) / tx; |
| ay = (BlackPointOut->Y - cmsD50_XYZ()->Y) / ty; |
| az = (BlackPointOut->Z - cmsD50_XYZ()->Z) / tz; |
| |
| bx = - cmsD50_XYZ()-> X * (BlackPointOut->X - BlackPointIn->X) / tx; |
| by = - cmsD50_XYZ()-> Y * (BlackPointOut->Y - BlackPointIn->Y) / ty; |
| bz = - cmsD50_XYZ()-> Z * (BlackPointOut->Z - BlackPointIn->Z) / tz; |
| |
| _cmsVEC3init(&m ->v[0], ax, 0, 0); |
| _cmsVEC3init(&m ->v[1], 0, ay, 0); |
| _cmsVEC3init(&m ->v[2], 0, 0, az); |
| _cmsVEC3init(off, bx, by, bz); |
| |
| } |
| |
| |
| // Approximate a blackbody illuminant based on CHAD information |
| static |
| cmsFloat64Number CHAD2Temp(const cmsMAT3* Chad) |
| { |
| // Convert D50 across inverse CHAD to get the absolute white point |
| cmsVEC3 d, s; |
| cmsCIEXYZ Dest; |
| cmsCIExyY DestChromaticity; |
| cmsFloat64Number TempK; |
| cmsMAT3 m1, m2; |
| |
| m1 = *Chad; |
| if (!_cmsMAT3inverse(&m1, &m2)) return FALSE; |
| |
| s.n[VX] = cmsD50_XYZ() -> X; |
| s.n[VY] = cmsD50_XYZ() -> Y; |
| s.n[VZ] = cmsD50_XYZ() -> Z; |
| |
| _cmsMAT3eval(&d, &m2, &s); |
| |
| Dest.X = d.n[VX]; |
| Dest.Y = d.n[VY]; |
| Dest.Z = d.n[VZ]; |
| |
| cmsXYZ2xyY(&DestChromaticity, &Dest); |
| |
| if (!cmsTempFromWhitePoint(&TempK, &DestChromaticity)) |
| return -1.0; |
| |
| return TempK; |
| } |
| |
| // Compute a CHAD based on a given temperature |
| static |
| void Temp2CHAD(cmsMAT3* Chad, cmsFloat64Number Temp) |
| { |
| cmsCIEXYZ White; |
| cmsCIExyY ChromaticityOfWhite; |
| |
| cmsWhitePointFromTemp(&ChromaticityOfWhite, Temp); |
| cmsxyY2XYZ(&White, &ChromaticityOfWhite); |
| _cmsAdaptationMatrix(Chad, NULL, &White, cmsD50_XYZ()); |
| } |
| |
| // Join scalings to obtain relative input to absolute and then to relative output. |
| // Result is stored in a 3x3 matrix |
| static |
| cmsBool ComputeAbsoluteIntent(cmsFloat64Number AdaptationState, |
| const cmsCIEXYZ* WhitePointIn, |
| const cmsMAT3* ChromaticAdaptationMatrixIn, |
| const cmsCIEXYZ* WhitePointOut, |
| const cmsMAT3* ChromaticAdaptationMatrixOut, |
| cmsMAT3* m) |
| { |
| cmsMAT3 Scale, m1, m2, m3, m4; |
| |
| // TODO: Follow Marc Mahy's recommendation to check if CHAD is same by using M1*M2 == M2*M1. If so, do nothing. |
| // TODO: Add support for ArgyllArts tag |
| |
| // Adaptation state |
| if (AdaptationState == 1.0) { |
| |
| // Observer is fully adapted. Keep chromatic adaptation. |
| // That is the standard V4 behaviour |
| _cmsVEC3init(&m->v[0], WhitePointIn->X / WhitePointOut->X, 0, 0); |
| _cmsVEC3init(&m->v[1], 0, WhitePointIn->Y / WhitePointOut->Y, 0); |
| _cmsVEC3init(&m->v[2], 0, 0, WhitePointIn->Z / WhitePointOut->Z); |
| |
| } |
| else { |
| |
| // Incomplete adaptation. This is an advanced feature. |
| _cmsVEC3init(&Scale.v[0], WhitePointIn->X / WhitePointOut->X, 0, 0); |
| _cmsVEC3init(&Scale.v[1], 0, WhitePointIn->Y / WhitePointOut->Y, 0); |
| _cmsVEC3init(&Scale.v[2], 0, 0, WhitePointIn->Z / WhitePointOut->Z); |
| |
| |
| if (AdaptationState == 0.0) { |
| |
| m1 = *ChromaticAdaptationMatrixOut; |
| _cmsMAT3per(&m2, &m1, &Scale); |
| // m2 holds CHAD from output white to D50 times abs. col. scaling |
| |
| // Observer is not adapted, undo the chromatic adaptation |
| _cmsMAT3per(m, &m2, ChromaticAdaptationMatrixOut); |
| |
| m3 = *ChromaticAdaptationMatrixIn; |
| if (!_cmsMAT3inverse(&m3, &m4)) return FALSE; |
| _cmsMAT3per(m, &m2, &m4); |
| |
| } else { |
| |
| cmsMAT3 MixedCHAD; |
| cmsFloat64Number TempSrc, TempDest, Temp; |
| |
| m1 = *ChromaticAdaptationMatrixIn; |
| if (!_cmsMAT3inverse(&m1, &m2)) return FALSE; |
| _cmsMAT3per(&m3, &m2, &Scale); |
| // m3 holds CHAD from input white to D50 times abs. col. scaling |
| |
| TempSrc = CHAD2Temp(ChromaticAdaptationMatrixIn); |
| TempDest = CHAD2Temp(ChromaticAdaptationMatrixOut); |
| |
| if (TempSrc < 0.0 || TempDest < 0.0) return FALSE; // Something went wrong |
| |
| if (_cmsMAT3isIdentity(&Scale) && fabs(TempSrc - TempDest) < 0.01) { |
| |
| _cmsMAT3identity(m); |
| return TRUE; |
| } |
| |
| Temp = (1.0 - AdaptationState) * TempDest + AdaptationState * TempSrc; |
| |
| // Get a CHAD from whatever output temperature to D50. This replaces output CHAD |
| Temp2CHAD(&MixedCHAD, Temp); |
| |
| _cmsMAT3per(m, &m3, &MixedCHAD); |
| } |
| |
| } |
| return TRUE; |
| |
| } |
| |
| // Just to see if m matrix should be applied |
| static |
| cmsBool IsEmptyLayer(cmsMAT3* m, cmsVEC3* off) |
| { |
| cmsFloat64Number diff = 0; |
| cmsMAT3 Ident; |
| int i; |
| |
| if (m == NULL && off == NULL) return TRUE; // NULL is allowed as an empty layer |
| if (m == NULL && off != NULL) return FALSE; // This is an internal error |
| |
| _cmsMAT3identity(&Ident); |
| |
| for (i=0; i < 3*3; i++) |
| diff += fabs(((cmsFloat64Number*)m)[i] - ((cmsFloat64Number*)&Ident)[i]); |
| |
| for (i=0; i < 3; i++) |
| diff += fabs(((cmsFloat64Number*)off)[i]); |
| |
| |
| return (diff < 0.002); |
| } |
| |
| |
| // Compute the conversion layer |
| static |
| cmsBool ComputeConversion(cmsUInt32Number i, |
| cmsHPROFILE hProfiles[], |
| cmsUInt32Number Intent, |
| cmsBool BPC, |
| cmsFloat64Number AdaptationState, |
| cmsMAT3* m, cmsVEC3* off) |
| { |
| |
| int k; |
| |
| // m and off are set to identity and this is detected latter on |
| _cmsMAT3identity(m); |
| _cmsVEC3init(off, 0, 0, 0); |
| |
| // If intent is abs. colorimetric, |
| if (Intent == INTENT_ABSOLUTE_COLORIMETRIC) { |
| |
| cmsCIEXYZ WhitePointIn, WhitePointOut; |
| cmsMAT3 ChromaticAdaptationMatrixIn, ChromaticAdaptationMatrixOut; |
| |
| if (!_cmsReadMediaWhitePoint(&WhitePointIn, hProfiles[i - 1])) return FALSE; |
| if (!_cmsReadCHAD(&ChromaticAdaptationMatrixIn, hProfiles[i - 1])) return FALSE; |
| |
| if (!_cmsReadMediaWhitePoint(&WhitePointOut, hProfiles[i])) return FALSE; |
| if (!_cmsReadCHAD(&ChromaticAdaptationMatrixOut, hProfiles[i])) return FALSE; |
| |
| if (!ComputeAbsoluteIntent(AdaptationState, |
| &WhitePointIn, &ChromaticAdaptationMatrixIn, |
| &WhitePointOut, &ChromaticAdaptationMatrixOut, m)) return FALSE; |
| |
| } |
| else { |
| // Rest of intents may apply BPC. |
| |
| if (BPC) { |
| |
| cmsCIEXYZ BlackPointIn = { 0, 0, 0}, BlackPointOut = { 0, 0, 0 }; |
| |
| cmsDetectBlackPoint(&BlackPointIn, hProfiles[i-1], Intent, 0); |
| cmsDetectDestinationBlackPoint(&BlackPointOut, hProfiles[i], Intent, 0); |
| |
| // If black points are equal, then do nothing |
| if (BlackPointIn.X != BlackPointOut.X || |
| BlackPointIn.Y != BlackPointOut.Y || |
| BlackPointIn.Z != BlackPointOut.Z) |
| ComputeBlackPointCompensation(&BlackPointIn, &BlackPointOut, m, off); |
| } |
| } |
| |
| // Offset should be adjusted because the encoding. We encode XYZ normalized to 0..1.0, |
| // to do that, we divide by MAX_ENCODEABLE_XZY. The conversion stage goes XYZ -> XYZ so |
| // we have first to convert from encoded to XYZ and then convert back to encoded. |
| // y = Mx + Off |
| // x = x'c |
| // y = M x'c + Off |
| // y = y'c; y' = y / c |
| // y' = (Mx'c + Off) /c = Mx' + (Off / c) |
| |
| for (k=0; k < 3; k++) { |
| off ->n[k] /= MAX_ENCODEABLE_XYZ; |
| } |
| |
| return TRUE; |
| } |
| |
| |
| // Add a conversion stage if needed. If a matrix/offset m is given, it applies to XYZ space |
| static |
| cmsBool AddConversion(cmsPipeline* Result, cmsColorSpaceSignature InPCS, cmsColorSpaceSignature OutPCS, cmsMAT3* m, cmsVEC3* off) |
| { |
| cmsFloat64Number* m_as_dbl = (cmsFloat64Number*) m; |
| cmsFloat64Number* off_as_dbl = (cmsFloat64Number*) off; |
| |
| // Handle PCS mismatches. A specialized stage is added to the LUT in such case |
| switch (InPCS) { |
| |
| case cmsSigXYZData: // Input profile operates in XYZ |
| |
| switch (OutPCS) { |
| |
| case cmsSigXYZData: // XYZ -> XYZ |
| if (!IsEmptyLayer(m, off) && |
| !cmsPipelineInsertStage(Result, cmsAT_END, cmsStageAllocMatrix(Result ->ContextID, 3, 3, m_as_dbl, off_as_dbl))) |
| return FALSE; |
| break; |
| |
| case cmsSigLabData: // XYZ -> Lab |
| if (!IsEmptyLayer(m, off) && |
| !cmsPipelineInsertStage(Result, cmsAT_END, cmsStageAllocMatrix(Result ->ContextID, 3, 3, m_as_dbl, off_as_dbl))) |
| return FALSE; |
| if (!cmsPipelineInsertStage(Result, cmsAT_END, _cmsStageAllocXYZ2Lab(Result ->ContextID))) |
| return FALSE; |
| break; |
| |
| default: |
| return FALSE; // Colorspace mismatch |
| } |
| break; |
| |
| case cmsSigLabData: // Input profile operates in Lab |
| |
| switch (OutPCS) { |
| |
| case cmsSigXYZData: // Lab -> XYZ |
| |
| if (!cmsPipelineInsertStage(Result, cmsAT_END, _cmsStageAllocLab2XYZ(Result ->ContextID))) |
| return FALSE; |
| if (!IsEmptyLayer(m, off) && |
| !cmsPipelineInsertStage(Result, cmsAT_END, cmsStageAllocMatrix(Result ->ContextID, 3, 3, m_as_dbl, off_as_dbl))) |
| return FALSE; |
| break; |
| |
| case cmsSigLabData: // Lab -> Lab |
| |
| if (!IsEmptyLayer(m, off)) { |
| if (!cmsPipelineInsertStage(Result, cmsAT_END, _cmsStageAllocLab2XYZ(Result ->ContextID)) || |
| !cmsPipelineInsertStage(Result, cmsAT_END, cmsStageAllocMatrix(Result ->ContextID, 3, 3, m_as_dbl, off_as_dbl)) || |
| !cmsPipelineInsertStage(Result, cmsAT_END, _cmsStageAllocXYZ2Lab(Result ->ContextID))) |
| return FALSE; |
| } |
| break; |
| |
| default: |
| return FALSE; // Mismatch |
| } |
| break; |
| |
| // On colorspaces other than PCS, check for same space |
| default: |
| if (InPCS != OutPCS) return FALSE; |
| break; |
| } |
| |
| return TRUE; |
| } |
| |
| |
| // Is a given space compatible with another? |
| static |
| cmsBool ColorSpaceIsCompatible(cmsColorSpaceSignature a, cmsColorSpaceSignature b) |
| { |
| // If they are same, they are compatible. |
| if (a == b) return TRUE; |
| |
| // Check for MCH4 substitution of CMYK |
| if ((a == cmsSig4colorData) && (b == cmsSigCmykData)) return TRUE; |
| if ((a == cmsSigCmykData) && (b == cmsSig4colorData)) return TRUE; |
| |
| // Check for XYZ/Lab. Those spaces are interchangeable as they can be computed one from other. |
| if ((a == cmsSigXYZData) && (b == cmsSigLabData)) return TRUE; |
| if ((a == cmsSigLabData) && (b == cmsSigXYZData)) return TRUE; |
| |
| return FALSE; |
| } |
| |
| |
| // Default handler for ICC-style intents |
| static |
| cmsPipeline* DefaultICCintents(cmsContext ContextID, |
| cmsUInt32Number nProfiles, |
| cmsUInt32Number TheIntents[], |
| cmsHPROFILE hProfiles[], |
| cmsBool BPC[], |
| cmsFloat64Number AdaptationStates[], |
| cmsUInt32Number dwFlags) |
| { |
| cmsPipeline* Lut = NULL; |
| cmsPipeline* Result; |
| cmsHPROFILE hProfile; |
| cmsMAT3 m; |
| cmsVEC3 off; |
| cmsColorSpaceSignature ColorSpaceIn, ColorSpaceOut = cmsSigLabData, CurrentColorSpace; |
| cmsProfileClassSignature ClassSig; |
| cmsUInt32Number i, Intent; |
| |
| // For safety |
| if (nProfiles == 0) return NULL; |
| |
| // Allocate an empty LUT for holding the result. 0 as channel count means 'undefined' |
| Result = cmsPipelineAlloc(ContextID, 0, 0); |
| if (Result == NULL) return NULL; |
| |
| CurrentColorSpace = cmsGetColorSpace(hProfiles[0]); |
| |
| for (i=0; i < nProfiles; i++) { |
| |
| cmsBool lIsDeviceLink, lIsInput; |
| |
| hProfile = hProfiles[i]; |
| ClassSig = cmsGetDeviceClass(hProfile); |
| lIsDeviceLink = (ClassSig == cmsSigLinkClass || ClassSig == cmsSigAbstractClass ); |
| |
| // First profile is used as input unless devicelink or abstract |
| if ((i == 0) && !lIsDeviceLink) { |
| lIsInput = TRUE; |
| } |
| else { |
| // Else use profile in the input direction if current space is not PCS |
| lIsInput = (CurrentColorSpace != cmsSigXYZData) && |
| (CurrentColorSpace != cmsSigLabData); |
| } |
| |
| Intent = TheIntents[i]; |
| |
| if (lIsInput || lIsDeviceLink) { |
| |
| ColorSpaceIn = cmsGetColorSpace(hProfile); |
| ColorSpaceOut = cmsGetPCS(hProfile); |
| } |
| else { |
| |
| ColorSpaceIn = cmsGetPCS(hProfile); |
| ColorSpaceOut = cmsGetColorSpace(hProfile); |
| } |
| |
| if (!ColorSpaceIsCompatible(ColorSpaceIn, CurrentColorSpace)) { |
| |
| cmsSignalError(ContextID, cmsERROR_COLORSPACE_CHECK, "ColorSpace mismatch"); |
| goto Error; |
| } |
| |
| // If devicelink is found, then no custom intent is allowed and we can |
| // read the LUT to be applied. Settings don't apply here. |
| if (lIsDeviceLink || ((ClassSig == cmsSigNamedColorClass) && (nProfiles == 1))) { |
| |
| // Get the involved LUT from the profile |
| Lut = _cmsReadDevicelinkLUT(hProfile, Intent); |
| if (Lut == NULL) goto Error; |
| |
| // What about abstract profiles? |
| if (ClassSig == cmsSigAbstractClass && i > 0) { |
| if (!ComputeConversion(i, hProfiles, Intent, BPC[i], AdaptationStates[i], &m, &off)) goto Error; |
| } |
| else { |
| _cmsMAT3identity(&m); |
| _cmsVEC3init(&off, 0, 0, 0); |
| } |
| |
| |
| if (!AddConversion(Result, CurrentColorSpace, ColorSpaceIn, &m, &off)) goto Error; |
| |
| } |
| else { |
| |
| if (lIsInput) { |
| // Input direction means non-pcs connection, so proceed like devicelinks |
| Lut = _cmsReadInputLUT(hProfile, Intent); |
| if (Lut == NULL) goto Error; |
| } |
| else { |
| |
| // Output direction means PCS connection. Intent may apply here |
| Lut = _cmsReadOutputLUT(hProfile, Intent); |
| if (Lut == NULL) goto Error; |
| |
| |
| if (!ComputeConversion(i, hProfiles, Intent, BPC[i], AdaptationStates[i], &m, &off)) goto Error; |
| if (!AddConversion(Result, CurrentColorSpace, ColorSpaceIn, &m, &off)) goto Error; |
| |
| } |
| } |
| |
| // Concatenate to the output LUT |
| if (!cmsPipelineCat(Result, Lut)) |
| goto Error; |
| |
| cmsPipelineFree(Lut); |
| Lut = NULL; |
| |
| // Update current space |
| CurrentColorSpace = ColorSpaceOut; |
| } |
| |
| // Check for non-negatives clip |
| if (dwFlags & cmsFLAGS_NONEGATIVES) { |
| |
| if (ColorSpaceOut == cmsSigGrayData || |
| ColorSpaceOut == cmsSigRgbData || |
| ColorSpaceOut == cmsSigCmykData) { |
| |
| cmsStage* clip = _cmsStageClipNegatives(Result->ContextID, cmsChannelsOfColorSpace(ColorSpaceOut)); |
| if (clip == NULL) goto Error; |
| |
| if (!cmsPipelineInsertStage(Result, cmsAT_END, clip)) |
| goto Error; |
| } |
| |
| } |
| |
| return Result; |
| |
| Error: |
| |
| if (Lut != NULL) cmsPipelineFree(Lut); |
| if (Result != NULL) cmsPipelineFree(Result); |
| return NULL; |
| |
| cmsUNUSED_PARAMETER(dwFlags); |
| } |
| |
| |
| // Wrapper for DLL calling convention |
| cmsPipeline* CMSEXPORT _cmsDefaultICCintents(cmsContext ContextID, |
| cmsUInt32Number nProfiles, |
| cmsUInt32Number TheIntents[], |
| cmsHPROFILE hProfiles[], |
| cmsBool BPC[], |
| cmsFloat64Number AdaptationStates[], |
| cmsUInt32Number dwFlags) |
| { |
| return DefaultICCintents(ContextID, nProfiles, TheIntents, hProfiles, BPC, AdaptationStates, dwFlags); |
| } |
| |
| // Black preserving intents --------------------------------------------------------------------------------------------- |
| |
| // Translate black-preserving intents to ICC ones |
| static |
| cmsUInt32Number TranslateNonICCIntents(cmsUInt32Number Intent) |
| { |
| switch (Intent) { |
| case INTENT_PRESERVE_K_ONLY_PERCEPTUAL: |
| case INTENT_PRESERVE_K_PLANE_PERCEPTUAL: |
| return INTENT_PERCEPTUAL; |
| |
| case INTENT_PRESERVE_K_ONLY_RELATIVE_COLORIMETRIC: |
| case INTENT_PRESERVE_K_PLANE_RELATIVE_COLORIMETRIC: |
| return INTENT_RELATIVE_COLORIMETRIC; |
| |
| case INTENT_PRESERVE_K_ONLY_SATURATION: |
| case INTENT_PRESERVE_K_PLANE_SATURATION: |
| return INTENT_SATURATION; |
| |
| default: return Intent; |
| } |
| } |
| |
| // Sampler for Black-only preserving CMYK->CMYK transforms |
| |
| typedef struct { |
| cmsPipeline* cmyk2cmyk; // The original transform |
| cmsToneCurve* KTone; // Black-to-black tone curve |
| |
| } GrayOnlyParams; |
| |
| |
| // Preserve black only if that is the only ink used |
| static |
| int BlackPreservingGrayOnlySampler(CMSREGISTER const cmsUInt16Number In[], CMSREGISTER cmsUInt16Number Out[], CMSREGISTER void* Cargo) |
| { |
| GrayOnlyParams* bp = (GrayOnlyParams*) Cargo; |
| |
| // If going across black only, keep black only |
| if (In[0] == 0 && In[1] == 0 && In[2] == 0) { |
| |
| // TAC does not apply because it is black ink! |
| Out[0] = Out[1] = Out[2] = 0; |
| Out[3] = cmsEvalToneCurve16(bp->KTone, In[3]); |
| return TRUE; |
| } |
| |
| // Keep normal transform for other colors |
| bp ->cmyk2cmyk ->Eval16Fn(In, Out, bp ->cmyk2cmyk->Data); |
| return TRUE; |
| } |
| |
| // This is the entry for black-preserving K-only intents, which are non-ICC |
| static |
| cmsPipeline* BlackPreservingKOnlyIntents(cmsContext ContextID, |
| cmsUInt32Number nProfiles, |
| cmsUInt32Number TheIntents[], |
| cmsHPROFILE hProfiles[], |
| cmsBool BPC[], |
| cmsFloat64Number AdaptationStates[], |
| cmsUInt32Number dwFlags) |
| { |
| GrayOnlyParams bp; |
| cmsPipeline* Result; |
| cmsUInt32Number ICCIntents[256]; |
| cmsStage* CLUT; |
| cmsUInt32Number i, nGridPoints; |
| cmsUInt32Number lastProfilePos; |
| cmsUInt32Number preservationProfilesCount; |
| cmsHPROFILE hLastProfile; |
| |
| |
| // Sanity check |
| if (nProfiles < 1 || nProfiles > 255) return NULL; |
| |
| // Translate black-preserving intents to ICC ones |
| for (i=0; i < nProfiles; i++) |
| ICCIntents[i] = TranslateNonICCIntents(TheIntents[i]); |
| |
| |
| // Trim all CMYK devicelinks at the end |
| lastProfilePos = nProfiles - 1; |
| hLastProfile = hProfiles[lastProfilePos]; |
| |
| while (lastProfilePos > 1) |
| { |
| hLastProfile = hProfiles[--lastProfilePos]; |
| if (cmsGetColorSpace(hLastProfile) != cmsSigCmykData || |
| cmsGetDeviceClass(hLastProfile) != cmsSigLinkClass) |
| break; |
| } |
| |
| preservationProfilesCount = lastProfilePos + 1; |
| |
| // Check for non-cmyk profiles |
| if (cmsGetColorSpace(hProfiles[0]) != cmsSigCmykData || |
| !(cmsGetColorSpace(hLastProfile) == cmsSigCmykData || |
| cmsGetDeviceClass(hLastProfile) == cmsSigOutputClass)) |
| return DefaultICCintents(ContextID, nProfiles, ICCIntents, hProfiles, BPC, AdaptationStates, dwFlags); |
| |
| // Allocate an empty LUT for holding the result |
| Result = cmsPipelineAlloc(ContextID, 4, 4); |
| if (Result == NULL) return NULL; |
| |
| memset(&bp, 0, sizeof(bp)); |
| |
| // Create a LUT holding normal ICC transform |
| bp.cmyk2cmyk = DefaultICCintents(ContextID, |
| preservationProfilesCount, |
| ICCIntents, |
| hProfiles, |
| BPC, |
| AdaptationStates, |
| dwFlags); |
| |
| if (bp.cmyk2cmyk == NULL) goto Error; |
| |
| // Now, compute the tone curve |
| bp.KTone = _cmsBuildKToneCurve(ContextID, |
| 4096, |
| preservationProfilesCount, |
| ICCIntents, |
| hProfiles, |
| BPC, |
| AdaptationStates, |
| dwFlags); |
| |
| if (bp.KTone == NULL) goto Error; |
| |
| |
| // How many gridpoints are we going to use? |
| nGridPoints = _cmsReasonableGridpointsByColorspace(cmsSigCmykData, dwFlags); |
| |
| // Create the CLUT. 16 bits |
| CLUT = cmsStageAllocCLut16bit(ContextID, nGridPoints, 4, 4, NULL); |
| if (CLUT == NULL) goto Error; |
| |
| // This is the one and only MPE in this LUT |
| if (!cmsPipelineInsertStage(Result, cmsAT_BEGIN, CLUT)) |
| goto Error; |
| |
| // Sample it. We cannot afford pre/post linearization this time. |
| if (!cmsStageSampleCLut16bit(CLUT, BlackPreservingGrayOnlySampler, (void*) &bp, 0)) |
| goto Error; |
| |
| |
| // Insert possible devicelinks at the end |
| for (i = lastProfilePos + 1; i < nProfiles; i++) |
| { |
| cmsPipeline* devlink = _cmsReadDevicelinkLUT(hProfiles[i], ICCIntents[i]); |
| if (devlink == NULL) |
| goto Error; |
| |
| if (!cmsPipelineCat(Result, devlink)) |
| goto Error; |
| } |
| |
| |
| // Get rid of xform and tone curve |
| cmsPipelineFree(bp.cmyk2cmyk); |
| cmsFreeToneCurve(bp.KTone); |
| |
| return Result; |
| |
| Error: |
| |
| if (bp.cmyk2cmyk != NULL) cmsPipelineFree(bp.cmyk2cmyk); |
| if (bp.KTone != NULL) cmsFreeToneCurve(bp.KTone); |
| if (Result != NULL) cmsPipelineFree(Result); |
| return NULL; |
| |
| } |
| |
| // K Plane-preserving CMYK to CMYK ------------------------------------------------------------------------------------ |
| |
| typedef struct { |
| |
| cmsPipeline* cmyk2cmyk; // The original transform |
| cmsHTRANSFORM hProofOutput; // Output CMYK to Lab (last profile) |
| cmsHTRANSFORM cmyk2Lab; // The input chain |
| cmsToneCurve* KTone; // Black-to-black tone curve |
| cmsPipeline* LabK2cmyk; // The output profile |
| cmsFloat64Number MaxError; |
| |
| cmsHTRANSFORM hRoundTrip; |
| cmsFloat64Number MaxTAC; |
| |
| |
| } PreserveKPlaneParams; |
| |
| |
| // The CLUT will be stored at 16 bits, but calculations are performed at cmsFloat32Number precision |
| static |
| int BlackPreservingSampler(CMSREGISTER const cmsUInt16Number In[], CMSREGISTER cmsUInt16Number Out[], CMSREGISTER void* Cargo) |
| { |
| int i; |
| cmsFloat32Number Inf[4], Outf[4]; |
| cmsFloat32Number LabK[4]; |
| cmsFloat64Number SumCMY, SumCMYK, Error, Ratio; |
| cmsCIELab ColorimetricLab, BlackPreservingLab; |
| PreserveKPlaneParams* bp = (PreserveKPlaneParams*) Cargo; |
| |
| // Convert from 16 bits to floating point |
| for (i=0; i < 4; i++) |
| Inf[i] = (cmsFloat32Number) (In[i] / 65535.0); |
| |
| // Get the K across Tone curve |
| LabK[3] = cmsEvalToneCurveFloat(bp ->KTone, Inf[3]); |
| |
| // If going across black only, keep black only |
| if (In[0] == 0 && In[1] == 0 && In[2] == 0) { |
| |
| Out[0] = Out[1] = Out[2] = 0; |
| Out[3] = _cmsQuickSaturateWord(LabK[3] * 65535.0); |
| return TRUE; |
| } |
| |
| // Try the original transform, |
| cmsPipelineEvalFloat(Inf, Outf, bp ->cmyk2cmyk); |
| |
| // Store a copy of the floating point result into 16-bit |
| for (i=0; i < 4; i++) |
| Out[i] = _cmsQuickSaturateWord(Outf[i] * 65535.0); |
| |
| // Maybe K is already ok (mostly on K=0) |
| if (fabsf(Outf[3] - LabK[3]) < (3.0 / 65535.0)) { |
| return TRUE; |
| } |
| |
| // K differ, measure and keep Lab measurement for further usage |
| // this is done in relative colorimetric intent |
| cmsDoTransform(bp->hProofOutput, Out, &ColorimetricLab, 1); |
| |
| // Is not black only and the transform doesn't keep black. |
| // Obtain the Lab of output CMYK. After that we have Lab + K |
| cmsDoTransform(bp ->cmyk2Lab, Outf, LabK, 1); |
| |
| // Obtain the corresponding CMY using reverse interpolation |
| // (K is fixed in LabK[3]) |
| if (!cmsPipelineEvalReverseFloat(LabK, Outf, Outf, bp ->LabK2cmyk)) { |
| |
| // Cannot find a suitable value, so use colorimetric xform |
| // which is already stored in Out[] |
| return TRUE; |
| } |
| |
| // Make sure to pass through K (which now is fixed) |
| Outf[3] = LabK[3]; |
| |
| // Apply TAC if needed |
| SumCMY = (cmsFloat64Number) Outf[0] + Outf[1] + Outf[2]; |
| SumCMYK = SumCMY + Outf[3]; |
| |
| if (SumCMYK > bp ->MaxTAC) { |
| |
| Ratio = 1 - ((SumCMYK - bp->MaxTAC) / SumCMY); |
| if (Ratio < 0) |
| Ratio = 0; |
| } |
| else |
| Ratio = 1.0; |
| |
| Out[0] = _cmsQuickSaturateWord(Outf[0] * Ratio * 65535.0); // C |
| Out[1] = _cmsQuickSaturateWord(Outf[1] * Ratio * 65535.0); // M |
| Out[2] = _cmsQuickSaturateWord(Outf[2] * Ratio * 65535.0); // Y |
| Out[3] = _cmsQuickSaturateWord(Outf[3] * 65535.0); |
| |
| // Estimate the error (this goes 16 bits to Lab DBL) |
| cmsDoTransform(bp->hProofOutput, Out, &BlackPreservingLab, 1); |
| Error = cmsDeltaE(&ColorimetricLab, &BlackPreservingLab); |
| if (Error > bp -> MaxError) |
| bp->MaxError = Error; |
| |
| return TRUE; |
| } |
| |
| |
| |
| // This is the entry for black-plane preserving, which are non-ICC |
| static |
| cmsPipeline* BlackPreservingKPlaneIntents(cmsContext ContextID, |
| cmsUInt32Number nProfiles, |
| cmsUInt32Number TheIntents[], |
| cmsHPROFILE hProfiles[], |
| cmsBool BPC[], |
| cmsFloat64Number AdaptationStates[], |
| cmsUInt32Number dwFlags) |
| { |
| PreserveKPlaneParams bp; |
| |
| cmsPipeline* Result = NULL; |
| cmsUInt32Number ICCIntents[256]; |
| cmsStage* CLUT; |
| cmsUInt32Number i, nGridPoints; |
| cmsUInt32Number lastProfilePos; |
| cmsUInt32Number preservationProfilesCount; |
| cmsHPROFILE hLastProfile; |
| cmsHPROFILE hLab; |
| |
| // Sanity check |
| if (nProfiles < 1 || nProfiles > 255) return NULL; |
| |
| // Translate black-preserving intents to ICC ones |
| for (i=0; i < nProfiles; i++) |
| ICCIntents[i] = TranslateNonICCIntents(TheIntents[i]); |
| |
| // Trim all CMYK devicelinks at the end |
| lastProfilePos = nProfiles - 1; |
| hLastProfile = hProfiles[lastProfilePos]; |
| |
| while (lastProfilePos > 1) |
| { |
| hLastProfile = hProfiles[--lastProfilePos]; |
| if (cmsGetColorSpace(hLastProfile) != cmsSigCmykData || |
| cmsGetDeviceClass(hLastProfile) != cmsSigLinkClass) |
| break; |
| } |
| |
| preservationProfilesCount = lastProfilePos + 1; |
| |
| // Check for non-cmyk profiles |
| if (cmsGetColorSpace(hProfiles[0]) != cmsSigCmykData || |
| !(cmsGetColorSpace(hLastProfile) == cmsSigCmykData || |
| cmsGetDeviceClass(hLastProfile) == cmsSigOutputClass)) |
| return DefaultICCintents(ContextID, nProfiles, ICCIntents, hProfiles, BPC, AdaptationStates, dwFlags); |
| |
| // Allocate an empty LUT for holding the result |
| Result = cmsPipelineAlloc(ContextID, 4, 4); |
| if (Result == NULL) return NULL; |
| |
| memset(&bp, 0, sizeof(bp)); |
| |
| // We need the input LUT of the last profile, assuming this one is responsible of |
| // black generation. This LUT will be searched in inverse order. |
| bp.LabK2cmyk = _cmsReadInputLUT(hLastProfile, INTENT_RELATIVE_COLORIMETRIC); |
| if (bp.LabK2cmyk == NULL) goto Cleanup; |
| |
| // Get total area coverage (in 0..1 domain) |
| bp.MaxTAC = cmsDetectTAC(hLastProfile) / 100.0; |
| if (bp.MaxTAC <= 0) goto Cleanup; |
| |
| |
| // Create a LUT holding normal ICC transform |
| bp.cmyk2cmyk = DefaultICCintents(ContextID, |
| preservationProfilesCount, |
| ICCIntents, |
| hProfiles, |
| BPC, |
| AdaptationStates, |
| dwFlags); |
| if (bp.cmyk2cmyk == NULL) goto Cleanup; |
| |
| // Now the tone curve |
| bp.KTone = _cmsBuildKToneCurve(ContextID, 4096, preservationProfilesCount, |
| ICCIntents, |
| hProfiles, |
| BPC, |
| AdaptationStates, |
| dwFlags); |
| if (bp.KTone == NULL) goto Cleanup; |
| |
| // To measure the output, Last profile to Lab |
| hLab = cmsCreateLab4ProfileTHR(ContextID, NULL); |
| bp.hProofOutput = cmsCreateTransformTHR(ContextID, hLastProfile, |
| CHANNELS_SH(4)|BYTES_SH(2), hLab, TYPE_Lab_DBL, |
| INTENT_RELATIVE_COLORIMETRIC, |
| cmsFLAGS_NOCACHE|cmsFLAGS_NOOPTIMIZE); |
| if ( bp.hProofOutput == NULL) goto Cleanup; |
| |
| // Same as anterior, but lab in the 0..1 range |
| bp.cmyk2Lab = cmsCreateTransformTHR(ContextID, hLastProfile, |
| FLOAT_SH(1)|CHANNELS_SH(4)|BYTES_SH(4), hLab, |
| FLOAT_SH(1)|CHANNELS_SH(3)|BYTES_SH(4), |
| INTENT_RELATIVE_COLORIMETRIC, |
| cmsFLAGS_NOCACHE|cmsFLAGS_NOOPTIMIZE); |
| if (bp.cmyk2Lab == NULL) goto Cleanup; |
| cmsCloseProfile(hLab); |
| |
| // Error estimation (for debug only) |
| bp.MaxError = 0; |
| |
| // How many gridpoints are we going to use? |
| nGridPoints = _cmsReasonableGridpointsByColorspace(cmsSigCmykData, dwFlags); |
| |
| |
| CLUT = cmsStageAllocCLut16bit(ContextID, nGridPoints, 4, 4, NULL); |
| if (CLUT == NULL) goto Cleanup; |
| |
| if (!cmsPipelineInsertStage(Result, cmsAT_BEGIN, CLUT)) |
| goto Cleanup; |
| |
| cmsStageSampleCLut16bit(CLUT, BlackPreservingSampler, (void*) &bp, 0); |
| |
| // Insert possible devicelinks at the end |
| for (i = lastProfilePos + 1; i < nProfiles; i++) |
| { |
| cmsPipeline* devlink = _cmsReadDevicelinkLUT(hProfiles[i], ICCIntents[i]); |
| if (devlink == NULL) |
| goto Cleanup; |
| |
| if (!cmsPipelineCat(Result, devlink)) |
| goto Cleanup; |
| } |
| |
| |
| Cleanup: |
| |
| if (bp.cmyk2cmyk) cmsPipelineFree(bp.cmyk2cmyk); |
| if (bp.cmyk2Lab) cmsDeleteTransform(bp.cmyk2Lab); |
| if (bp.hProofOutput) cmsDeleteTransform(bp.hProofOutput); |
| |
| if (bp.KTone) cmsFreeToneCurve(bp.KTone); |
| if (bp.LabK2cmyk) cmsPipelineFree(bp.LabK2cmyk); |
| |
| return Result; |
| } |
| |
| |
| |
| // Link routines ------------------------------------------------------------------------------------------------------ |
| |
| // Chain several profiles into a single LUT. It just checks the parameters and then calls the handler |
| // for the first intent in chain. The handler may be user-defined. Is up to the handler to deal with the |
| // rest of intents in chain. A maximum of 255 profiles at time are supported, which is pretty reasonable. |
| cmsPipeline* _cmsLinkProfiles(cmsContext ContextID, |
| cmsUInt32Number nProfiles, |
| cmsUInt32Number TheIntents[], |
| cmsHPROFILE hProfiles[], |
| cmsBool BPC[], |
| cmsFloat64Number AdaptationStates[], |
| cmsUInt32Number dwFlags) |
| { |
| cmsUInt32Number i; |
| cmsIntentsList* Intent; |
| |
| // Make sure a reasonable number of profiles is provided |
| if (nProfiles <= 0 || nProfiles > 255) { |
| cmsSignalError(ContextID, cmsERROR_RANGE, "Couldn't link '%d' profiles", nProfiles); |
| return NULL; |
| } |
| |
| for (i=0; i < nProfiles; i++) { |
| |
| // Check if black point is really needed or allowed. Note that |
| // following Adobe's document: |
| // BPC does not apply to devicelink profiles, nor to abs colorimetric, |
| // and applies always on V4 perceptual and saturation. |
| |
| if (TheIntents[i] == INTENT_ABSOLUTE_COLORIMETRIC) |
| BPC[i] = FALSE; |
| |
| if (TheIntents[i] == INTENT_PERCEPTUAL || TheIntents[i] == INTENT_SATURATION) { |
| |
| // Force BPC for V4 profiles in perceptual and saturation |
| if (cmsGetEncodedICCversion(hProfiles[i]) >= 0x4000000) |
| BPC[i] = TRUE; |
| } |
| } |
| |
| // Search for a handler. The first intent in the chain defines the handler. That would |
| // prevent using multiple custom intents in a multiintent chain, but the behaviour of |
| // this case would present some issues if the custom intent tries to do things like |
| // preserve primaries. This solution is not perfect, but works well on most cases. |
| |
| Intent = SearchIntent(ContextID, TheIntents[0]); |
| if (Intent == NULL) { |
| cmsSignalError(ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported intent '%d'", TheIntents[0]); |
| return NULL; |
| } |
| |
| // Call the handler |
| return Intent ->Link(ContextID, nProfiles, TheIntents, hProfiles, BPC, AdaptationStates, dwFlags); |
| } |
| |
| // ------------------------------------------------------------------------------------------------- |
| |
| // Get information about available intents. nMax is the maximum space for the supplied "Codes" |
| // and "Descriptions" the function returns the total number of intents, which may be greater |
| // than nMax, although the matrices are not populated beyond this level. |
| cmsUInt32Number CMSEXPORT cmsGetSupportedIntentsTHR(cmsContext ContextID, cmsUInt32Number nMax, cmsUInt32Number* Codes, char** Descriptions) |
| { |
| _cmsIntentsPluginChunkType* ctx = ( _cmsIntentsPluginChunkType*) _cmsContextGetClientChunk(ContextID, IntentPlugin); |
| cmsIntentsList* pt; |
| cmsUInt32Number nIntents; |
| |
| |
| for (nIntents=0, pt = ctx->Intents; pt != NULL; pt = pt -> Next) |
| { |
| if (nIntents < nMax) { |
| if (Codes != NULL) |
| Codes[nIntents] = pt ->Intent; |
| |
| if (Descriptions != NULL) |
| Descriptions[nIntents] = pt ->Description; |
| } |
| |
| nIntents++; |
| } |
| |
| for (nIntents=0, pt = DefaultIntents; pt != NULL; pt = pt -> Next) |
| { |
| if (nIntents < nMax) { |
| if (Codes != NULL) |
| Codes[nIntents] = pt ->Intent; |
| |
| if (Descriptions != NULL) |
| Descriptions[nIntents] = pt ->Description; |
| } |
| |
| nIntents++; |
| } |
| return nIntents; |
| } |
| |
| cmsUInt32Number CMSEXPORT cmsGetSupportedIntents(cmsUInt32Number nMax, cmsUInt32Number* Codes, char** Descriptions) |
| { |
| return cmsGetSupportedIntentsTHR(NULL, nMax, Codes, Descriptions); |
| } |
| |
| // The plug-in registration. User can add new intents or override default routines |
| cmsBool _cmsRegisterRenderingIntentPlugin(cmsContext id, cmsPluginBase* Data) |
| { |
| _cmsIntentsPluginChunkType* ctx = ( _cmsIntentsPluginChunkType*) _cmsContextGetClientChunk(id, IntentPlugin); |
| cmsPluginRenderingIntent* Plugin = (cmsPluginRenderingIntent*) Data; |
| cmsIntentsList* fl; |
| |
| // Do we have to reset the custom intents? |
| if (Data == NULL) { |
| |
| ctx->Intents = NULL; |
| return TRUE; |
| } |
| |
| fl = (cmsIntentsList*) _cmsPluginMalloc(id, sizeof(cmsIntentsList)); |
| if (fl == NULL) return FALSE; |
| |
| |
| fl ->Intent = Plugin ->Intent; |
| strncpy(fl ->Description, Plugin ->Description, sizeof(fl ->Description)-1); |
| fl ->Description[sizeof(fl ->Description)-1] = 0; |
| |
| fl ->Link = Plugin ->Link; |
| |
| fl ->Next = ctx ->Intents; |
| ctx ->Intents = fl; |
| |
| return TRUE; |
| } |
| |
