//--------------------------------------------------------------------------------- // // Little Color Management System // Copyright (c) 1998-2016 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" // Transformations stuff // ----------------------------------------------------------------------- #define DEFAULT_OBSERVER_ADAPTATION_STATE 1.0 // The Context0 observer adaptation state. _cmsAdaptationStateChunkType _cmsAdaptationStateChunk = { DEFAULT_OBSERVER_ADAPTATION_STATE }; // Init and duplicate observer adaptation state void _cmsAllocAdaptationStateChunk(struct _cmsContext_struct* ctx, const struct _cmsContext_struct* src) { static _cmsAdaptationStateChunkType AdaptationStateChunk = { DEFAULT_OBSERVER_ADAPTATION_STATE }; void* from; if (src != NULL) { from = src ->chunks[AdaptationStateContext]; } else { from = &AdaptationStateChunk; } ctx ->chunks[AdaptationStateContext] = _cmsSubAllocDup(ctx ->MemPool, from, sizeof(_cmsAdaptationStateChunkType)); } // Sets adaptation state for absolute colorimetric intent in the given context. Adaptation state applies on all // but cmsCreateExtendedTransformTHR(). Little CMS can handle incomplete adaptation states. cmsFloat64Number CMSEXPORT cmsSetAdaptationStateTHR(cmsContext ContextID, cmsFloat64Number d) { cmsFloat64Number prev; _cmsAdaptationStateChunkType* ptr = (_cmsAdaptationStateChunkType*) _cmsContextGetClientChunk(ContextID, AdaptationStateContext); // Get previous value for return prev = ptr ->AdaptationState; // Set the value if d is positive or zero if (d >= 0.0) { ptr ->AdaptationState = d; } // Always return previous value return prev; } // The adaptation state may be defaulted by this function. If you don't like it, use the extended transform routine cmsFloat64Number CMSEXPORT cmsSetAdaptationState(cmsFloat64Number d) { return cmsSetAdaptationStateTHR(NULL, d); } // ----------------------------------------------------------------------- // Alarm codes for 16-bit transformations, because the fixed range of containers there are // no values left to mark out of gamut. #define DEFAULT_ALARM_CODES_VALUE {0x7F00, 0x7F00, 0x7F00, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} _cmsAlarmCodesChunkType _cmsAlarmCodesChunk = { DEFAULT_ALARM_CODES_VALUE }; // Sets the codes used to mark out-out-gamut on Proofing transforms for a given context. Values are meant to be // encoded in 16 bits. void CMSEXPORT cmsSetAlarmCodesTHR(cmsContext ContextID, const cmsUInt16Number AlarmCodesP[cmsMAXCHANNELS]) { _cmsAlarmCodesChunkType* ContextAlarmCodes = (_cmsAlarmCodesChunkType*) _cmsContextGetClientChunk(ContextID, AlarmCodesContext); _cmsAssert(ContextAlarmCodes != NULL); // Can't happen memcpy(ContextAlarmCodes->AlarmCodes, AlarmCodesP, sizeof(ContextAlarmCodes->AlarmCodes)); } // Gets the current codes used to mark out-out-gamut on Proofing transforms for the given context. // Values are meant to be encoded in 16 bits. void CMSEXPORT cmsGetAlarmCodesTHR(cmsContext ContextID, cmsUInt16Number AlarmCodesP[cmsMAXCHANNELS]) { _cmsAlarmCodesChunkType* ContextAlarmCodes = (_cmsAlarmCodesChunkType*) _cmsContextGetClientChunk(ContextID, AlarmCodesContext); _cmsAssert(ContextAlarmCodes != NULL); // Can't happen memcpy(AlarmCodesP, ContextAlarmCodes->AlarmCodes, sizeof(ContextAlarmCodes->AlarmCodes)); } void CMSEXPORT cmsSetAlarmCodes(const cmsUInt16Number NewAlarm[cmsMAXCHANNELS]) { _cmsAssert(NewAlarm != NULL); cmsSetAlarmCodesTHR(NULL, NewAlarm); } void CMSEXPORT cmsGetAlarmCodes(cmsUInt16Number OldAlarm[cmsMAXCHANNELS]) { _cmsAssert(OldAlarm != NULL); cmsGetAlarmCodesTHR(NULL, OldAlarm); } // Init and duplicate alarm codes void _cmsAllocAlarmCodesChunk(struct _cmsContext_struct* ctx, const struct _cmsContext_struct* src) { static _cmsAlarmCodesChunkType AlarmCodesChunk = { DEFAULT_ALARM_CODES_VALUE }; void* from; if (src != NULL) { from = src ->chunks[AlarmCodesContext]; } else { from = &AlarmCodesChunk; } ctx ->chunks[AlarmCodesContext] = _cmsSubAllocDup(ctx ->MemPool, from, sizeof(_cmsAlarmCodesChunkType)); } // ----------------------------------------------------------------------- // Get rid of transform resources void CMSEXPORT cmsDeleteTransform(cmsHTRANSFORM hTransform) { _cmsTRANSFORM* p = (_cmsTRANSFORM*) hTransform; _cmsAssert(p != NULL); if (p -> GamutCheck) cmsPipelineFree(p -> GamutCheck); if (p -> Lut) cmsPipelineFree(p -> Lut); if (p ->InputColorant) cmsFreeNamedColorList(p ->InputColorant); if (p -> OutputColorant) cmsFreeNamedColorList(p ->OutputColorant); if (p ->Sequence) cmsFreeProfileSequenceDescription(p ->Sequence); if (p ->UserData) p ->FreeUserData(p ->ContextID, p ->UserData); _cmsFree(p ->ContextID, (void *) p); } // Apply transform. void CMSEXPORT cmsDoTransform(cmsHTRANSFORM Transform, const void* InputBuffer, void* OutputBuffer, cmsUInt32Number Size) { _cmsTRANSFORM* p = (_cmsTRANSFORM*) Transform; cmsStride stride; stride.BytesPerLineIn = 0; // Not used stride.BytesPerLineOut = 0; stride.BytesPerPlaneIn = Size; stride.BytesPerPlaneOut = Size; p -> xform(p, InputBuffer, OutputBuffer, Size, 1, &stride); } // This is a legacy stride for planar void CMSEXPORT cmsDoTransformStride(cmsHTRANSFORM Transform, const void* InputBuffer, void* OutputBuffer, cmsUInt32Number Size, cmsUInt32Number Stride) { _cmsTRANSFORM* p = (_cmsTRANSFORM*) Transform; cmsStride stride; stride.BytesPerLineIn = 0; stride.BytesPerLineOut = 0; stride.BytesPerPlaneIn = Stride; stride.BytesPerPlaneOut = Stride; p -> xform(p, InputBuffer, OutputBuffer, Size, 1, &stride); } // This is the "fast" function for plugins void CMSEXPORT cmsDoTransformLineStride(cmsHTRANSFORM Transform, const void* InputBuffer, void* OutputBuffer, cmsUInt32Number PixelsPerLine, cmsUInt32Number LineCount, cmsUInt32Number BytesPerLineIn, cmsUInt32Number BytesPerLineOut, cmsUInt32Number BytesPerPlaneIn, cmsUInt32Number BytesPerPlaneOut) { _cmsTRANSFORM* p = (_cmsTRANSFORM*) Transform; cmsStride stride; stride.BytesPerLineIn = BytesPerLineIn; stride.BytesPerLineOut = BytesPerLineOut; stride.BytesPerPlaneIn = BytesPerPlaneIn; stride.BytesPerPlaneOut = BytesPerPlaneOut; p->xform(p, InputBuffer, OutputBuffer, PixelsPerLine, LineCount, &stride); } // Transform routines ---------------------------------------------------------------------------------------------------------- // Float xform converts floats. Since there are no performance issues, one routine does all job, including gamut check. // Note that because extended range, we can use a -1.0 value for out of gamut in this case. static void FloatXFORM(_cmsTRANSFORM* p, const void* in, void* out, cmsUInt32Number PixelsPerLine, cmsUInt32Number LineCount, const cmsStride* Stride) { cmsUInt8Number* accum; cmsUInt8Number* output; cmsFloat32Number fIn[cmsMAXCHANNELS], fOut[cmsMAXCHANNELS]; cmsFloat32Number OutOfGamut; cmsUInt32Number i, j, c, strideIn, strideOut; _cmsHandleExtraChannels(p, in, out, PixelsPerLine, LineCount, Stride); strideIn = 0; strideOut = 0; for (i = 0; i < LineCount; i++) { accum = (cmsUInt8Number*)in + strideIn; output = (cmsUInt8Number*)out + strideOut; for (j = 0; j < PixelsPerLine; j++) { accum = p->FromInputFloat(p, fIn, accum, Stride->BytesPerPlaneIn); // Any gamut chack to do? if (p->GamutCheck != NULL) { // Evaluate gamut marker. cmsPipelineEvalFloat(fIn, &OutOfGamut, p->GamutCheck); // Is current color out of gamut? if (OutOfGamut > 0.0) { // Certainly, out of gamut for (c = 0; c < cmsMAXCHANNELS; c++) fOut[c] = -1.0; } else { // No, proceed normally cmsPipelineEvalFloat(fIn, fOut, p->Lut); } } else { // No gamut check at all cmsPipelineEvalFloat(fIn, fOut, p->Lut); } output = p->ToOutputFloat(p, fOut, output, Stride->BytesPerPlaneOut); } strideIn += Stride->BytesPerLineIn; strideOut += Stride->BytesPerLineOut; } } static void NullFloatXFORM(_cmsTRANSFORM* p, const void* in, void* out, cmsUInt32Number PixelsPerLine, cmsUInt32Number LineCount, const cmsStride* Stride) { cmsUInt8Number* accum; cmsUInt8Number* output; cmsFloat32Number fIn[cmsMAXCHANNELS]; cmsUInt32Number i, j, strideIn, strideOut; _cmsHandleExtraChannels(p, in, out, PixelsPerLine, LineCount, Stride); strideIn = 0; strideOut = 0; for (i = 0; i < LineCount; i++) { accum = (cmsUInt8Number*) in + strideIn; output = (cmsUInt8Number*) out + strideOut; for (j = 0; j < PixelsPerLine; j++) { accum = p->FromInputFloat(p, fIn, accum, Stride ->BytesPerPlaneIn); output = p->ToOutputFloat(p, fIn, output, Stride->BytesPerPlaneOut); } strideIn += Stride->BytesPerLineIn; strideOut += Stride->BytesPerLineOut; } } // 16 bit precision ----------------------------------------------------------------------------------------------------------- // Null transformation, only applies formatters. No caché static void NullXFORM(_cmsTRANSFORM* p, const void* in, void* out, cmsUInt32Number PixelsPerLine, cmsUInt32Number LineCount, const cmsStride* Stride) { cmsUInt8Number* accum; cmsUInt8Number* output; cmsUInt16Number wIn[cmsMAXCHANNELS]; cmsUInt32Number i, j, strideIn, strideOut; _cmsHandleExtraChannels(p, in, out, PixelsPerLine, LineCount, Stride); strideIn = 0; strideOut = 0; for (i = 0; i < LineCount; i++) { accum = (cmsUInt8Number*)in + strideIn; output = (cmsUInt8Number*)out + strideOut; for (j = 0; j < PixelsPerLine; j++) { accum = p->FromInput(p, wIn, accum, Stride->BytesPerPlaneIn); output = p->ToOutput(p, wIn, output, Stride->BytesPerPlaneOut); } strideIn += Stride->BytesPerLineIn; strideOut += Stride->BytesPerLineOut; } } // No gamut check, no cache, 16 bits static void PrecalculatedXFORM(_cmsTRANSFORM* p, const void* in, void* out, cmsUInt32Number PixelsPerLine, cmsUInt32Number LineCount, const cmsStride* Stride) { register cmsUInt8Number* accum; register cmsUInt8Number* output; cmsUInt16Number wIn[cmsMAXCHANNELS], wOut[cmsMAXCHANNELS]; cmsUInt32Number i, j, strideIn, strideOut; _cmsHandleExtraChannels(p, in, out, PixelsPerLine, LineCount, Stride); strideIn = 0; strideOut = 0; for (i = 0; i < LineCount; i++) { accum = (cmsUInt8Number*)in + strideIn; output = (cmsUInt8Number*)out + strideOut; for (j = 0; j < PixelsPerLine; j++) { accum = p->FromInput(p, wIn, accum, Stride->BytesPerPlaneIn); p->Lut->Eval16Fn(wIn, wOut, p->Lut->Data); output = p->ToOutput(p, wOut, output, Stride->BytesPerPlaneOut); } strideIn += Stride->BytesPerLineIn; strideOut += Stride->BytesPerLineOut; } } // Auxiliary: Handle precalculated gamut check. The retrieval of context may be alittle bit slow, but this function is not critical. static void TransformOnePixelWithGamutCheck(_cmsTRANSFORM* p, const cmsUInt16Number wIn[], cmsUInt16Number wOut[]) { cmsUInt16Number wOutOfGamut; p ->GamutCheck ->Eval16Fn(wIn, &wOutOfGamut, p ->GamutCheck ->Data); if (wOutOfGamut >= 1) { cmsUInt16Number i; _cmsAlarmCodesChunkType* ContextAlarmCodes = (_cmsAlarmCodesChunkType*) _cmsContextGetClientChunk(p->ContextID, AlarmCodesContext); for (i=0; i < p ->Lut->OutputChannels; i++) { wOut[i] = ContextAlarmCodes ->AlarmCodes[i]; } } else p ->Lut ->Eval16Fn(wIn, wOut, p -> Lut->Data); } // Gamut check, No caché, 16 bits. static void PrecalculatedXFORMGamutCheck(_cmsTRANSFORM* p, const void* in, void* out, cmsUInt32Number PixelsPerLine, cmsUInt32Number LineCount, const cmsStride* Stride) { cmsUInt8Number* accum; cmsUInt8Number* output; cmsUInt16Number wIn[cmsMAXCHANNELS], wOut[cmsMAXCHANNELS]; cmsUInt32Number i, j, strideIn, strideOut; _cmsHandleExtraChannels(p, in, out, PixelsPerLine, LineCount, Stride); strideIn = 0; strideOut = 0; for (i = 0; i < LineCount; i++) { accum = (cmsUInt8Number*)in + strideIn; output = (cmsUInt8Number*)out + strideOut; for (j = 0; j < PixelsPerLine; j++) { accum = p->FromInput(p, wIn, accum, Stride->BytesPerPlaneIn); TransformOnePixelWithGamutCheck(p, wIn, wOut); output = p->ToOutput(p, wOut, output, Stride->BytesPerPlaneOut); } strideIn += Stride->BytesPerLineIn; strideOut += Stride->BytesPerLineOut; } } // No gamut check, Caché, 16 bits, static void CachedXFORM(_cmsTRANSFORM* p, const void* in, void* out, cmsUInt32Number PixelsPerLine, cmsUInt32Number LineCount, const cmsStride* Stride) { cmsUInt8Number* accum; cmsUInt8Number* output; cmsUInt16Number wIn[cmsMAXCHANNELS], wOut[cmsMAXCHANNELS]; _cmsCACHE Cache; cmsUInt32Number i, j, strideIn, strideOut; _cmsHandleExtraChannels(p, in, out, PixelsPerLine, LineCount, Stride); // Empty buffers for quick memcmp memset(wIn, 0, sizeof(wIn)); memset(wOut, 0, sizeof(wOut)); // Get copy of zero cache memcpy(&Cache, &p->Cache, sizeof(Cache)); strideIn = 0; strideOut = 0; for (i = 0; i < LineCount; i++) { accum = (cmsUInt8Number*)in + strideIn; output = (cmsUInt8Number*)out + strideOut; for (j = 0; j < PixelsPerLine; j++) { accum = p->FromInput(p, wIn, accum, Stride->BytesPerPlaneIn); if (memcmp(wIn, Cache.CacheIn, sizeof(Cache.CacheIn)) == 0) { memcpy(wOut, Cache.CacheOut, sizeof(Cache.CacheOut)); } else { p->Lut->Eval16Fn(wIn, wOut, p->Lut->Data); memcpy(Cache.CacheIn, wIn, sizeof(Cache.CacheIn)); memcpy(Cache.CacheOut, wOut, sizeof(Cache.CacheOut)); } output = p->ToOutput(p, wOut, output, Stride->BytesPerPlaneOut); } strideIn += Stride->BytesPerLineIn; strideOut += Stride->BytesPerLineOut; } } // All those nice features together static void CachedXFORMGamutCheck(_cmsTRANSFORM* p, const void* in, void* out, cmsUInt32Number PixelsPerLine, cmsUInt32Number LineCount, const cmsStride* Stride) { cmsUInt8Number* accum; cmsUInt8Number* output; cmsUInt16Number wIn[cmsMAXCHANNELS], wOut[cmsMAXCHANNELS]; _cmsCACHE Cache; cmsUInt32Number i, j, strideIn, strideOut; _cmsHandleExtraChannels(p, in, out, PixelsPerLine, LineCount, Stride); // Empty buffers for quick memcmp memset(wIn, 0, sizeof(wIn)); memset(wOut, 0, sizeof(wOut)); // Get copy of zero cache memcpy(&Cache, &p->Cache, sizeof(Cache)); strideIn = 0; strideOut = 0; for (i = 0; i < LineCount; i++) { accum = (cmsUInt8Number*)in + strideIn; output = (cmsUInt8Number*)out + strideOut; for (j = 0; j < PixelsPerLine; j++) { accum = p->FromInput(p, wIn, accum, Stride->BytesPerPlaneIn); if (memcmp(wIn, Cache.CacheIn, sizeof(Cache.CacheIn)) == 0) { memcpy(wOut, Cache.CacheOut, sizeof(Cache.CacheOut)); } else { TransformOnePixelWithGamutCheck(p, wIn, wOut); memcpy(Cache.CacheIn, wIn, sizeof(Cache.CacheIn)); memcpy(Cache.CacheOut, wOut, sizeof(Cache.CacheOut)); } output = p->ToOutput(p, wOut, output, Stride->BytesPerPlaneOut); } strideIn += Stride->BytesPerLineIn; strideOut += Stride->BytesPerLineOut; } } // Transform plug-ins ---------------------------------------------------------------------------------------------------- // List of used-defined transform factories typedef struct _cmsTransformCollection_st { _cmsTransform2Factory Factory; cmsBool OldXform; // Factory returns xform function in the old style struct _cmsTransformCollection_st *Next; } _cmsTransformCollection; // The linked list head _cmsTransformPluginChunkType _cmsTransformPluginChunk = { NULL }; // Duplicates the zone of memory used by the plug-in in the new context static void DupPluginTransformList(struct _cmsContext_struct* ctx, const struct _cmsContext_struct* src) { _cmsTransformPluginChunkType newHead = { NULL }; _cmsTransformCollection* entry; _cmsTransformCollection* Anterior = NULL; _cmsTransformPluginChunkType* head = (_cmsTransformPluginChunkType*) src->chunks[TransformPlugin]; // Walk the list copying all nodes for (entry = head->TransformCollection; entry != NULL; entry = entry ->Next) { _cmsTransformCollection *newEntry = ( _cmsTransformCollection *) _cmsSubAllocDup(ctx ->MemPool, entry, sizeof(_cmsTransformCollection)); 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.TransformCollection == NULL) newHead.TransformCollection = newEntry; } ctx ->chunks[TransformPlugin] = _cmsSubAllocDup(ctx->MemPool, &newHead, sizeof(_cmsTransformPluginChunkType)); } // Allocates memory for transform plugin factory void _cmsAllocTransformPluginChunk(struct _cmsContext_struct* ctx, const struct _cmsContext_struct* src) { if (src != NULL) { // Copy all linked list DupPluginTransformList(ctx, src); } else { static _cmsTransformPluginChunkType TransformPluginChunkType = { NULL }; ctx ->chunks[TransformPlugin] = _cmsSubAllocDup(ctx ->MemPool, &TransformPluginChunkType, sizeof(_cmsTransformPluginChunkType)); } } // Adaptor for old versions of plug-in static void _cmsTransform2toTransformAdaptor(struct _cmstransform_struct *CMMcargo, const void* InputBuffer, void* OutputBuffer, cmsUInt32Number PixelsPerLine, cmsUInt32Number LineCount, const cmsStride* Stride) { cmsUInt32Number i, strideIn, strideOut; _cmsHandleExtraChannels(CMMcargo, InputBuffer, OutputBuffer, PixelsPerLine, LineCount, Stride); strideIn = 0; strideOut = 0; for (i = 0; i < LineCount; i++) { void *accum = (cmsUInt8Number*)InputBuffer + strideIn; void *output = (cmsUInt8Number*)OutputBuffer + strideOut; CMMcargo->OldXform(CMMcargo, accum, output, PixelsPerLine, Stride->BytesPerPlaneIn); strideIn += Stride->BytesPerLineIn; strideOut += Stride->BytesPerLineOut; } } // Register new ways to transform cmsBool _cmsRegisterTransformPlugin(cmsContext ContextID, cmsPluginBase* Data) { cmsPluginTransform* Plugin = (cmsPluginTransform*) Data; _cmsTransformCollection* fl; _cmsTransformPluginChunkType* ctx = ( _cmsTransformPluginChunkType*) _cmsContextGetClientChunk(ContextID,TransformPlugin); if (Data == NULL) { // Free the chain. Memory is safely freed at exit ctx->TransformCollection = NULL; return TRUE; } // Factory callback is required if (Plugin->factories.xform == NULL) return FALSE; fl = (_cmsTransformCollection*) _cmsPluginMalloc(ContextID, sizeof(_cmsTransformCollection)); if (fl == NULL) return FALSE; // Check for full xform plug-ins previous to 2.8, we would need an adapter in that case if (Plugin->base.ExpectedVersion < 2080) { fl->OldXform = TRUE; } else fl->OldXform = FALSE; // Copy the parameters fl->Factory = Plugin->factories.xform; // Keep linked list fl ->Next = ctx->TransformCollection; ctx->TransformCollection = fl; // All is ok return TRUE; } void CMSEXPORT _cmsSetTransformUserData(struct _cmstransform_struct *CMMcargo, void* ptr, _cmsFreeUserDataFn FreePrivateDataFn) { _cmsAssert(CMMcargo != NULL); CMMcargo ->UserData = ptr; CMMcargo ->FreeUserData = FreePrivateDataFn; } // returns the pointer defined by the plug-in to store private data void * CMSEXPORT _cmsGetTransformUserData(struct _cmstransform_struct *CMMcargo) { _cmsAssert(CMMcargo != NULL); return CMMcargo ->UserData; } // returns the current formatters void CMSEXPORT _cmsGetTransformFormatters16(struct _cmstransform_struct *CMMcargo, cmsFormatter16* FromInput, cmsFormatter16* ToOutput) { _cmsAssert(CMMcargo != NULL); if (FromInput) *FromInput = CMMcargo ->FromInput; if (ToOutput) *ToOutput = CMMcargo ->ToOutput; } void CMSEXPORT _cmsGetTransformFormattersFloat(struct _cmstransform_struct *CMMcargo, cmsFormatterFloat* FromInput, cmsFormatterFloat* ToOutput) { _cmsAssert(CMMcargo != NULL); if (FromInput) *FromInput = CMMcargo ->FromInputFloat; if (ToOutput) *ToOutput = CMMcargo ->ToOutputFloat; } // 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 _cmsTRANSFORM* AllocEmptyTransform(cmsContext ContextID, cmsPipeline* lut, cmsUInt32Number Intent, cmsUInt32Number* InputFormat, cmsUInt32Number* OutputFormat, cmsUInt32Number* dwFlags) { _cmsTransformPluginChunkType* ctx = ( _cmsTransformPluginChunkType*) _cmsContextGetClientChunk(ContextID, TransformPlugin); _cmsTransformCollection* Plugin; // Allocate needed memory _cmsTRANSFORM* p = (_cmsTRANSFORM*)_cmsMallocZero(ContextID, sizeof(_cmsTRANSFORM)); if (!p) return NULL; // Store the proposed pipeline p->Lut = lut; // Let's see if any plug-in want to do the transform by itself if (p->Lut != NULL) { for (Plugin = ctx->TransformCollection; Plugin != NULL; Plugin = Plugin->Next) { if (Plugin->Factory(&p->xform, &p->UserData, &p->FreeUserData, &p->Lut, InputFormat, OutputFormat, dwFlags)) { // Last plugin in the declaration order takes control. We just keep // the original parameters as a logging. // Note that cmsFLAGS_CAN_CHANGE_FORMATTER is not set, so by default // an optimized transform is not reusable. The plug-in can, however, change // the flags and make it suitable. p->ContextID = ContextID; p->InputFormat = *InputFormat; p->OutputFormat = *OutputFormat; p->dwOriginalFlags = *dwFlags; // Fill the formatters just in case the optimized routine is interested. // No error is thrown if the formatter doesn't exist. It is up to the optimization // factory to decide what to do in those cases. p->FromInput = _cmsGetFormatter(ContextID, *InputFormat, cmsFormatterInput, CMS_PACK_FLAGS_16BITS).Fmt16; p->ToOutput = _cmsGetFormatter(ContextID, *OutputFormat, cmsFormatterOutput, CMS_PACK_FLAGS_16BITS).Fmt16; p->FromInputFloat = _cmsGetFormatter(ContextID, *InputFormat, cmsFormatterInput, CMS_PACK_FLAGS_FLOAT).FmtFloat; p->ToOutputFloat = _cmsGetFormatter(ContextID, *OutputFormat, cmsFormatterOutput, CMS_PACK_FLAGS_FLOAT).FmtFloat; // Save the day? if (Plugin->OldXform) { p->OldXform = (_cmsTransformFn) p->xform; p->xform = _cmsTransform2toTransformAdaptor; } return p; } } // Not suitable for the transform plug-in, let's check the pipeline plug-in _cmsOptimizePipeline(ContextID, &p->Lut, Intent, InputFormat, OutputFormat, dwFlags); } // Check whatever this is a true floating point transform if (_cmsFormatterIsFloat(*InputFormat) && _cmsFormatterIsFloat(*OutputFormat)) { // Get formatter function always return a valid union, but the contents of this union may be NULL. p ->FromInputFloat = _cmsGetFormatter(ContextID, *InputFormat, cmsFormatterInput, CMS_PACK_FLAGS_FLOAT).FmtFloat; p ->ToOutputFloat = _cmsGetFormatter(ContextID, *OutputFormat, cmsFormatterOutput, CMS_PACK_FLAGS_FLOAT).FmtFloat; *dwFlags |= cmsFLAGS_CAN_CHANGE_FORMATTER; if (p ->FromInputFloat == NULL || p ->ToOutputFloat == NULL) { cmsSignalError(ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported raster format"); _cmsFree(ContextID, p); return NULL; } if (*dwFlags & cmsFLAGS_NULLTRANSFORM) { p ->xform = NullFloatXFORM; } else { // Float transforms don't use caché, always are non-NULL p ->xform = FloatXFORM; } } else { if (*InputFormat == 0 && *OutputFormat == 0) { p ->FromInput = p ->ToOutput = NULL; *dwFlags |= cmsFLAGS_CAN_CHANGE_FORMATTER; } else { int BytesPerPixelInput; p ->FromInput = _cmsGetFormatter(ContextID, *InputFormat, cmsFormatterInput, CMS_PACK_FLAGS_16BITS).Fmt16; p ->ToOutput = _cmsGetFormatter(ContextID, *OutputFormat, cmsFormatterOutput, CMS_PACK_FLAGS_16BITS).Fmt16; if (p ->FromInput == NULL || p ->ToOutput == NULL) { cmsSignalError(ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported raster format"); _cmsFree(ContextID, p); return NULL; } BytesPerPixelInput = T_BYTES(p ->InputFormat); if (BytesPerPixelInput == 0 || BytesPerPixelInput >= 2) *dwFlags |= cmsFLAGS_CAN_CHANGE_FORMATTER; } if (*dwFlags & cmsFLAGS_NULLTRANSFORM) { p ->xform = NullXFORM; } else { if (*dwFlags & cmsFLAGS_NOCACHE) { if (*dwFlags & cmsFLAGS_GAMUTCHECK) p ->xform = PrecalculatedXFORMGamutCheck; // Gamut check, no caché else p ->xform = PrecalculatedXFORM; // No caché, no gamut check } else { if (*dwFlags & cmsFLAGS_GAMUTCHECK) p ->xform = CachedXFORMGamutCheck; // Gamut check, caché else p ->xform = CachedXFORM; // No gamut check, caché } } } p ->InputFormat = *InputFormat; p ->OutputFormat = *OutputFormat; p ->dwOriginalFlags = *dwFlags; p ->ContextID = ContextID; p ->UserData = NULL; return p; } static cmsBool GetXFormColorSpaces(int nProfiles, cmsHPROFILE hProfiles[], cmsColorSpaceSignature* Input, cmsColorSpaceSignature* Output) { cmsColorSpaceSignature ColorSpaceIn, ColorSpaceOut; cmsColorSpaceSignature PostColorSpace; int i; if (nProfiles <= 0) return FALSE; if (hProfiles[0] == NULL) return FALSE; *Input = PostColorSpace = cmsGetColorSpace(hProfiles[0]); for (i=0; i < nProfiles; i++) { cmsProfileClassSignature cls; cmsHPROFILE hProfile = hProfiles[i]; int lIsInput = (PostColorSpace != cmsSigXYZData) && (PostColorSpace != cmsSigLabData); if (hProfile == NULL) return FALSE; cls = cmsGetDeviceClass(hProfile); if (cls == cmsSigNamedColorClass) { ColorSpaceIn = cmsSig1colorData; ColorSpaceOut = (nProfiles > 1) ? cmsGetPCS(hProfile) : cmsGetColorSpace(hProfile); } else if (lIsInput || (cls == cmsSigLinkClass)) { ColorSpaceIn = cmsGetColorSpace(hProfile); ColorSpaceOut = cmsGetPCS(hProfile); } else { ColorSpaceIn = cmsGetPCS(hProfile); ColorSpaceOut = cmsGetColorSpace(hProfile); } if (i==0) *Input = ColorSpaceIn; PostColorSpace = ColorSpaceOut; } *Output = PostColorSpace; return TRUE; } // Check colorspace static cmsBool IsProperColorSpace(cmsColorSpaceSignature Check, cmsUInt32Number dwFormat) { int Space1 = T_COLORSPACE(dwFormat); int Space2 = _cmsLCMScolorSpace(Check); if (Space1 == PT_ANY) return TRUE; if (Space1 == Space2) return TRUE; if (Space1 == PT_LabV2 && Space2 == PT_Lab) return TRUE; if (Space1 == PT_Lab && Space2 == PT_LabV2) return TRUE; return FALSE; } // ---------------------------------------------------------------------------------------------------------------- // Jun-21-2000: Some profiles (those that comes with W2K) comes // with the media white (media black?) x 100. Add a sanity check static void NormalizeXYZ(cmsCIEXYZ* Dest) { while (Dest -> X > 2. && Dest -> Y > 2. && Dest -> Z > 2.) { Dest -> X /= 10.; Dest -> Y /= 10.; Dest -> Z /= 10.; } } static void SetWhitePoint(cmsCIEXYZ* wtPt, const cmsCIEXYZ* src) { if (src == NULL) { wtPt ->X = cmsD50X; wtPt ->Y = cmsD50Y; wtPt ->Z = cmsD50Z; } else { wtPt ->X = src->X; wtPt ->Y = src->Y; wtPt ->Z = src->Z; NormalizeXYZ(wtPt); } } // New to lcms 2.0 -- have all parameters available. cmsHTRANSFORM CMSEXPORT cmsCreateExtendedTransform(cmsContext ContextID, cmsUInt32Number nProfiles, cmsHPROFILE hProfiles[], cmsBool BPC[], cmsUInt32Number Intents[], cmsFloat64Number AdaptationStates[], cmsHPROFILE hGamutProfile, cmsUInt32Number nGamutPCSposition, cmsUInt32Number InputFormat, cmsUInt32Number OutputFormat, cmsUInt32Number dwFlags) { _cmsTRANSFORM* xform; cmsColorSpaceSignature EntryColorSpace; cmsColorSpaceSignature ExitColorSpace; cmsPipeline* Lut; cmsUInt32Number LastIntent = Intents[nProfiles-1]; // If it is a fake transform if (dwFlags & cmsFLAGS_NULLTRANSFORM) { return AllocEmptyTransform(ContextID, NULL, INTENT_PERCEPTUAL, &InputFormat, &OutputFormat, &dwFlags); } // If gamut check is requested, make sure we have a gamut profile if (dwFlags & cmsFLAGS_GAMUTCHECK) { if (hGamutProfile == NULL) dwFlags &= ~cmsFLAGS_GAMUTCHECK; } // On floating point transforms, inhibit cache if (_cmsFormatterIsFloat(InputFormat) || _cmsFormatterIsFloat(OutputFormat)) dwFlags |= cmsFLAGS_NOCACHE; // Mark entry/exit spaces if (!GetXFormColorSpaces(nProfiles, hProfiles, &EntryColorSpace, &ExitColorSpace)) { cmsSignalError(ContextID, cmsERROR_NULL, "NULL input profiles on transform"); return NULL; } // Check if proper colorspaces if (!IsProperColorSpace(EntryColorSpace, InputFormat)) { cmsSignalError(ContextID, cmsERROR_COLORSPACE_CHECK, "Wrong input color space on transform"); return NULL; } if (!IsProperColorSpace(ExitColorSpace, OutputFormat)) { cmsSignalError(ContextID, cmsERROR_COLORSPACE_CHECK, "Wrong output color space on transform"); return NULL; } // Create a pipeline with all transformations Lut = _cmsLinkProfiles(ContextID, nProfiles, Intents, hProfiles, BPC, AdaptationStates, dwFlags); if (Lut == NULL) { cmsSignalError(ContextID, cmsERROR_NOT_SUITABLE, "Couldn't link the profiles"); return NULL; } // Check channel count if ((cmsChannelsOf(EntryColorSpace) != cmsPipelineInputChannels(Lut)) || (cmsChannelsOf(ExitColorSpace) != cmsPipelineOutputChannels(Lut))) { cmsPipelineFree(Lut); cmsSignalError(ContextID, cmsERROR_NOT_SUITABLE, "Channel count doesn't match. Profile is corrupted"); return NULL; } // All seems ok xform = AllocEmptyTransform(ContextID, Lut, LastIntent, &InputFormat, &OutputFormat, &dwFlags); if (xform == NULL) { return NULL; } // Keep values xform ->EntryColorSpace = EntryColorSpace; xform ->ExitColorSpace = ExitColorSpace; xform ->RenderingIntent = Intents[nProfiles-1]; // Take white points SetWhitePoint(&xform->EntryWhitePoint, (cmsCIEXYZ*) cmsReadTag(hProfiles[0], cmsSigMediaWhitePointTag)); SetWhitePoint(&xform->ExitWhitePoint, (cmsCIEXYZ*) cmsReadTag(hProfiles[nProfiles-1], cmsSigMediaWhitePointTag)); // Create a gamut check LUT if requested if (hGamutProfile != NULL && (dwFlags & cmsFLAGS_GAMUTCHECK)) xform ->GamutCheck = _cmsCreateGamutCheckPipeline(ContextID, hProfiles, BPC, Intents, AdaptationStates, nGamutPCSposition, hGamutProfile); // Try to read input and output colorant table if (cmsIsTag(hProfiles[0], cmsSigColorantTableTag)) { // Input table can only come in this way. xform ->InputColorant = cmsDupNamedColorList((cmsNAMEDCOLORLIST*) cmsReadTag(hProfiles[0], cmsSigColorantTableTag)); } // Output is a little bit more complex. if (cmsGetDeviceClass(hProfiles[nProfiles-1]) == cmsSigLinkClass) { // This tag may exist only on devicelink profiles. if (cmsIsTag(hProfiles[nProfiles-1], cmsSigColorantTableOutTag)) { // It may be NULL if error xform ->OutputColorant = cmsDupNamedColorList((cmsNAMEDCOLORLIST*) cmsReadTag(hProfiles[nProfiles-1], cmsSigColorantTableOutTag)); } } else { if (cmsIsTag(hProfiles[nProfiles-1], cmsSigColorantTableTag)) { xform -> OutputColorant = cmsDupNamedColorList((cmsNAMEDCOLORLIST*) cmsReadTag(hProfiles[nProfiles-1], cmsSigColorantTableTag)); } } // Store the sequence of profiles if (dwFlags & cmsFLAGS_KEEP_SEQUENCE) { xform ->Sequence = _cmsCompileProfileSequence(ContextID, nProfiles, hProfiles); } else xform ->Sequence = NULL; // If this is a cached transform, init first value, which is zero (16 bits only) if (!(dwFlags & cmsFLAGS_NOCACHE)) { memset(&xform ->Cache.CacheIn, 0, sizeof(xform ->Cache.CacheIn)); if (xform ->GamutCheck != NULL) { TransformOnePixelWithGamutCheck(xform, xform ->Cache.CacheIn, xform->Cache.CacheOut); } else { xform ->Lut ->Eval16Fn(xform ->Cache.CacheIn, xform->Cache.CacheOut, xform -> Lut->Data); } } return (cmsHTRANSFORM) xform; } // Multiprofile transforms: Gamut check is not available here, as it is unclear from which profile the gamut comes. cmsHTRANSFORM CMSEXPORT cmsCreateMultiprofileTransformTHR(cmsContext ContextID, cmsHPROFILE hProfiles[], cmsUInt32Number nProfiles, cmsUInt32Number InputFormat, cmsUInt32Number OutputFormat, cmsUInt32Number Intent, cmsUInt32Number dwFlags) { cmsUInt32Number i; cmsBool BPC[256]; cmsUInt32Number Intents[256]; cmsFloat64Number AdaptationStates[256]; if (nProfiles <= 0 || nProfiles > 255) { cmsSignalError(ContextID, cmsERROR_RANGE, "Wrong number of profiles. 1..255 expected, %d found.", nProfiles); return NULL; } for (i=0; i < nProfiles; i++) { BPC[i] = dwFlags & cmsFLAGS_BLACKPOINTCOMPENSATION ? TRUE : FALSE; Intents[i] = Intent; AdaptationStates[i] = cmsSetAdaptationStateTHR(ContextID, -1); } return cmsCreateExtendedTransform(ContextID, nProfiles, hProfiles, BPC, Intents, AdaptationStates, NULL, 0, InputFormat, OutputFormat, dwFlags); } cmsHTRANSFORM CMSEXPORT cmsCreateMultiprofileTransform(cmsHPROFILE hProfiles[], cmsUInt32Number nProfiles, cmsUInt32Number InputFormat, cmsUInt32Number OutputFormat, cmsUInt32Number Intent, cmsUInt32Number dwFlags) { if (nProfiles <= 0 || nProfiles > 255) { cmsSignalError(NULL, cmsERROR_RANGE, "Wrong number of profiles. 1..255 expected, %d found.", nProfiles); return NULL; } return cmsCreateMultiprofileTransformTHR(cmsGetProfileContextID(hProfiles[0]), hProfiles, nProfiles, InputFormat, OutputFormat, Intent, dwFlags); } cmsHTRANSFORM CMSEXPORT cmsCreateTransformTHR(cmsContext ContextID, cmsHPROFILE Input, cmsUInt32Number InputFormat, cmsHPROFILE Output, cmsUInt32Number OutputFormat, cmsUInt32Number Intent, cmsUInt32Number dwFlags) { cmsHPROFILE hArray[2]; hArray[0] = Input; hArray[1] = Output; return cmsCreateMultiprofileTransformTHR(ContextID, hArray, Output == NULL ? 1 : 2, InputFormat, OutputFormat, Intent, dwFlags); } CMSAPI cmsHTRANSFORM CMSEXPORT cmsCreateTransform(cmsHPROFILE Input, cmsUInt32Number InputFormat, cmsHPROFILE Output, cmsUInt32Number OutputFormat, cmsUInt32Number Intent, cmsUInt32Number dwFlags) { return cmsCreateTransformTHR(cmsGetProfileContextID(Input), Input, InputFormat, Output, OutputFormat, Intent, dwFlags); } cmsHTRANSFORM CMSEXPORT cmsCreateProofingTransformTHR(cmsContext ContextID, cmsHPROFILE InputProfile, cmsUInt32Number InputFormat, cmsHPROFILE OutputProfile, cmsUInt32Number OutputFormat, cmsHPROFILE ProofingProfile, cmsUInt32Number nIntent, cmsUInt32Number ProofingIntent, cmsUInt32Number dwFlags) { cmsHPROFILE hArray[4]; cmsUInt32Number Intents[4]; cmsBool BPC[4]; cmsFloat64Number Adaptation[4]; cmsBool DoBPC = (dwFlags & cmsFLAGS_BLACKPOINTCOMPENSATION) ? TRUE : FALSE; hArray[0] = InputProfile; hArray[1] = ProofingProfile; hArray[2] = ProofingProfile; hArray[3] = OutputProfile; Intents[0] = nIntent; Intents[1] = nIntent; Intents[2] = INTENT_RELATIVE_COLORIMETRIC; Intents[3] = ProofingIntent; BPC[0] = DoBPC; BPC[1] = DoBPC; BPC[2] = 0; BPC[3] = 0; Adaptation[0] = Adaptation[1] = Adaptation[2] = Adaptation[3] = cmsSetAdaptationStateTHR(ContextID, -1); if (!(dwFlags & (cmsFLAGS_SOFTPROOFING|cmsFLAGS_GAMUTCHECK))) return cmsCreateTransformTHR(ContextID, InputProfile, InputFormat, OutputProfile, OutputFormat, nIntent, dwFlags); return cmsCreateExtendedTransform(ContextID, 4, hArray, BPC, Intents, Adaptation, ProofingProfile, 1, InputFormat, OutputFormat, dwFlags); } cmsHTRANSFORM CMSEXPORT cmsCreateProofingTransform(cmsHPROFILE InputProfile, cmsUInt32Number InputFormat, cmsHPROFILE OutputProfile, cmsUInt32Number OutputFormat, cmsHPROFILE ProofingProfile, cmsUInt32Number nIntent, cmsUInt32Number ProofingIntent, cmsUInt32Number dwFlags) { return cmsCreateProofingTransformTHR(cmsGetProfileContextID(InputProfile), InputProfile, InputFormat, OutputProfile, OutputFormat, ProofingProfile, nIntent, ProofingIntent, dwFlags); } // Grab the ContextID from an open transform. Returns NULL if a NULL transform is passed cmsContext CMSEXPORT cmsGetTransformContextID(cmsHTRANSFORM hTransform) { _cmsTRANSFORM* xform = (_cmsTRANSFORM*) hTransform; if (xform == NULL) return NULL; return xform -> ContextID; } // Grab the input/output formats cmsUInt32Number CMSEXPORT cmsGetTransformInputFormat(cmsHTRANSFORM hTransform) { _cmsTRANSFORM* xform = (_cmsTRANSFORM*) hTransform; if (xform == NULL) return 0; return xform->InputFormat; } cmsUInt32Number CMSEXPORT cmsGetTransformOutputFormat(cmsHTRANSFORM hTransform) { _cmsTRANSFORM* xform = (_cmsTRANSFORM*) hTransform; if (xform == NULL) return 0; return xform->OutputFormat; } // For backwards compatibility cmsBool CMSEXPORT cmsChangeBuffersFormat(cmsHTRANSFORM hTransform, cmsUInt32Number InputFormat, cmsUInt32Number OutputFormat) { _cmsTRANSFORM* xform = (_cmsTRANSFORM*) hTransform; cmsFormatter16 FromInput, ToOutput; // We only can afford to change formatters if previous transform is at least 16 bits if (!(xform ->dwOriginalFlags & cmsFLAGS_CAN_CHANGE_FORMATTER)) { cmsSignalError(xform ->ContextID, cmsERROR_NOT_SUITABLE, "cmsChangeBuffersFormat works only on transforms created originally with at least 16 bits of precision"); return FALSE; } FromInput = _cmsGetFormatter(xform->ContextID, InputFormat, cmsFormatterInput, CMS_PACK_FLAGS_16BITS).Fmt16; ToOutput = _cmsGetFormatter(xform->ContextID, OutputFormat, cmsFormatterOutput, CMS_PACK_FLAGS_16BITS).Fmt16; if (FromInput == NULL || ToOutput == NULL) { cmsSignalError(xform -> ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported raster format"); return FALSE; } xform ->InputFormat = InputFormat; xform ->OutputFormat = OutputFormat; xform ->FromInput = FromInput; xform ->ToOutput = ToOutput; return TRUE; }