diff options
Diffstat (limited to 'third_party/lcms2-2.6/src/cmsopt.c')
| -rw-r--r-- | third_party/lcms2-2.6/src/cmsopt.c | 1811 |
1 files changed, 0 insertions, 1811 deletions
diff --git a/third_party/lcms2-2.6/src/cmsopt.c b/third_party/lcms2-2.6/src/cmsopt.c deleted file mode 100644 index 76de01554c..0000000000 --- a/third_party/lcms2-2.6/src/cmsopt.c +++ /dev/null @@ -1,1811 +0,0 @@ -//--------------------------------------------------------------------------------- -// -// Little Color Management System -// Copyright (c) 1998-2011 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" - - -//---------------------------------------------------------------------------------- - -// Optimization for 8 bits, Shaper-CLUT (3 inputs only) -typedef struct { - - cmsContext ContextID; - - const cmsInterpParams* p; // Tetrahedrical interpolation parameters. This is a not-owned pointer. - - cmsUInt16Number rx[256], ry[256], rz[256]; - cmsUInt32Number X0[256], Y0[256], Z0[256]; // Precomputed nodes and offsets for 8-bit input data - - -} Prelin8Data; - - -// Generic optimization for 16 bits Shaper-CLUT-Shaper (any inputs) -typedef struct { - - cmsContext ContextID; - - // Number of channels - int nInputs; - int nOutputs; - - _cmsInterpFn16 EvalCurveIn16[MAX_INPUT_DIMENSIONS]; // The maximum number of input channels is known in advance - cmsInterpParams* ParamsCurveIn16[MAX_INPUT_DIMENSIONS]; - - _cmsInterpFn16 EvalCLUT; // The evaluator for 3D grid - const cmsInterpParams* CLUTparams; // (not-owned pointer) - - - _cmsInterpFn16* EvalCurveOut16; // Points to an array of curve evaluators in 16 bits (not-owned pointer) - cmsInterpParams** ParamsCurveOut16; // Points to an array of references to interpolation params (not-owned pointer) - - -} Prelin16Data; - - -// Optimization for matrix-shaper in 8 bits. Numbers are operated in n.14 signed, tables are stored in 1.14 fixed - -typedef cmsInt32Number cmsS1Fixed14Number; // Note that this may hold more than 16 bits! - -#define DOUBLE_TO_1FIXED14(x) ((cmsS1Fixed14Number) floor((x) * 16384.0 + 0.5)) - -typedef struct { - - cmsContext ContextID; - - cmsS1Fixed14Number Shaper1R[256]; // from 0..255 to 1.14 (0.0...1.0) - cmsS1Fixed14Number Shaper1G[256]; - cmsS1Fixed14Number Shaper1B[256]; - - cmsS1Fixed14Number Mat[3][3]; // n.14 to n.14 (needs a saturation after that) - cmsS1Fixed14Number Off[3]; - - cmsUInt16Number Shaper2R[16385]; // 1.14 to 0..255 - cmsUInt16Number Shaper2G[16385]; - cmsUInt16Number Shaper2B[16385]; - -} MatShaper8Data; - -// Curves, optimization is shared between 8 and 16 bits -typedef struct { - - cmsContext ContextID; - - int nCurves; // Number of curves - int nElements; // Elements in curves - cmsUInt16Number** Curves; // Points to a dynamically allocated array - -} Curves16Data; - - -// Simple optimizations ---------------------------------------------------------------------------------------------------------- - - -// Remove an element in linked chain -static -void _RemoveElement(cmsStage** head) -{ - cmsStage* mpe = *head; - cmsStage* next = mpe ->Next; - *head = next; - cmsStageFree(mpe); -} - -// Remove all identities in chain. Note that pt actually is a double pointer to the element that holds the pointer. -static -cmsBool _Remove1Op(cmsPipeline* Lut, cmsStageSignature UnaryOp) -{ - cmsStage** pt = &Lut ->Elements; - cmsBool AnyOpt = FALSE; - - while (*pt != NULL) { - - if ((*pt) ->Implements == UnaryOp) { - _RemoveElement(pt); - AnyOpt = TRUE; - } - else - pt = &((*pt) -> Next); - } - - return AnyOpt; -} - -// Same, but only if two adjacent elements are found -static -cmsBool _Remove2Op(cmsPipeline* Lut, cmsStageSignature Op1, cmsStageSignature Op2) -{ - cmsStage** pt1; - cmsStage** pt2; - cmsBool AnyOpt = FALSE; - - pt1 = &Lut ->Elements; - if (*pt1 == NULL) return AnyOpt; - - while (*pt1 != NULL) { - - pt2 = &((*pt1) -> Next); - if (*pt2 == NULL) return AnyOpt; - - if ((*pt1) ->Implements == Op1 && (*pt2) ->Implements == Op2) { - _RemoveElement(pt2); - _RemoveElement(pt1); - AnyOpt = TRUE; - } - else - pt1 = &((*pt1) -> Next); - } - - return AnyOpt; -} - -// Preoptimize just gets rif of no-ops coming paired. Conversion from v2 to v4 followed -// by a v4 to v2 and vice-versa. The elements are then discarded. -static -cmsBool PreOptimize(cmsPipeline* Lut) -{ - cmsBool AnyOpt = FALSE, Opt; - - do { - - Opt = FALSE; - - // Remove all identities - Opt |= _Remove1Op(Lut, cmsSigIdentityElemType); - - // Remove XYZ2Lab followed by Lab2XYZ - Opt |= _Remove2Op(Lut, cmsSigXYZ2LabElemType, cmsSigLab2XYZElemType); - - // Remove Lab2XYZ followed by XYZ2Lab - Opt |= _Remove2Op(Lut, cmsSigLab2XYZElemType, cmsSigXYZ2LabElemType); - - // Remove V4 to V2 followed by V2 to V4 - Opt |= _Remove2Op(Lut, cmsSigLabV4toV2, cmsSigLabV2toV4); - - // Remove V2 to V4 followed by V4 to V2 - Opt |= _Remove2Op(Lut, cmsSigLabV2toV4, cmsSigLabV4toV2); - - // Remove float pcs Lab conversions - Opt |= _Remove2Op(Lut, cmsSigLab2FloatPCS, cmsSigFloatPCS2Lab); - - // Remove float pcs Lab conversions - Opt |= _Remove2Op(Lut, cmsSigXYZ2FloatPCS, cmsSigFloatPCS2XYZ); - - if (Opt) AnyOpt = TRUE; - - } while (Opt); - - return AnyOpt; -} - -static -void Eval16nop1D(register const cmsUInt16Number Input[], - register cmsUInt16Number Output[], - register const struct _cms_interp_struc* p) -{ - Output[0] = Input[0]; - - cmsUNUSED_PARAMETER(p); -} - -static -void PrelinEval16(register const cmsUInt16Number Input[], - register cmsUInt16Number Output[], - register const void* D) -{ - Prelin16Data* p16 = (Prelin16Data*) D; - cmsUInt16Number StageABC[MAX_INPUT_DIMENSIONS]; - cmsUInt16Number StageDEF[cmsMAXCHANNELS]; - int i; - - for (i=0; i < p16 ->nInputs; i++) { - - p16 ->EvalCurveIn16[i](&Input[i], &StageABC[i], p16 ->ParamsCurveIn16[i]); - } - - p16 ->EvalCLUT(StageABC, StageDEF, p16 ->CLUTparams); - - for (i=0; i < p16 ->nOutputs; i++) { - - p16 ->EvalCurveOut16[i](&StageDEF[i], &Output[i], p16 ->ParamsCurveOut16[i]); - } -} - - -static -void PrelinOpt16free(cmsContext ContextID, void* ptr) -{ - Prelin16Data* p16 = (Prelin16Data*) ptr; - - _cmsFree(ContextID, p16 ->EvalCurveOut16); - _cmsFree(ContextID, p16 ->ParamsCurveOut16); - - _cmsFree(ContextID, p16); -} - -static -void* Prelin16dup(cmsContext ContextID, const void* ptr) -{ - Prelin16Data* p16 = (Prelin16Data*) ptr; - Prelin16Data* Duped = _cmsDupMem(ContextID, p16, sizeof(Prelin16Data)); - - if (Duped == NULL) return NULL; - - Duped ->EvalCurveOut16 = (_cmsInterpFn16*)_cmsDupMem(ContextID, p16 ->EvalCurveOut16, p16 ->nOutputs * sizeof(_cmsInterpFn16)); - Duped ->ParamsCurveOut16 = (cmsInterpParams**)_cmsDupMem(ContextID, p16 ->ParamsCurveOut16, p16 ->nOutputs * sizeof(cmsInterpParams* )); - - return Duped; -} - - -static -Prelin16Data* PrelinOpt16alloc(cmsContext ContextID, - const cmsInterpParams* ColorMap, - int nInputs, cmsToneCurve** In, - int nOutputs, cmsToneCurve** Out ) -{ - int i; - Prelin16Data* p16 = _cmsMallocZero(ContextID, sizeof(Prelin16Data)); - if (p16 == NULL) return NULL; - - p16 ->nInputs = nInputs; - p16 -> nOutputs = nOutputs; - - - for (i=0; i < nInputs; i++) { - - if (In == NULL) { - p16 -> ParamsCurveIn16[i] = NULL; - p16 -> EvalCurveIn16[i] = Eval16nop1D; - - } - else { - p16 -> ParamsCurveIn16[i] = In[i] ->InterpParams; - p16 -> EvalCurveIn16[i] = p16 ->ParamsCurveIn16[i]->Interpolation.Lerp16; - } - } - - p16 ->CLUTparams = ColorMap; - p16 ->EvalCLUT = ColorMap ->Interpolation.Lerp16; - - - p16 -> EvalCurveOut16 = (_cmsInterpFn16*) _cmsCalloc(ContextID, nOutputs, sizeof(_cmsInterpFn16)); - p16 -> ParamsCurveOut16 = (cmsInterpParams**) _cmsCalloc(ContextID, nOutputs, sizeof(cmsInterpParams* )); - - for (i=0; i < nOutputs; i++) { - - if (Out == NULL) { - p16 ->ParamsCurveOut16[i] = NULL; - p16 -> EvalCurveOut16[i] = Eval16nop1D; - } - else { - - p16 ->ParamsCurveOut16[i] = Out[i] ->InterpParams; - p16 -> EvalCurveOut16[i] = p16 ->ParamsCurveOut16[i]->Interpolation.Lerp16; - } - } - - return p16; -} - - - -// Resampling --------------------------------------------------------------------------------- - -#define PRELINEARIZATION_POINTS 4096 - -// Sampler implemented by another LUT. This is a clean way to precalculate the devicelink 3D CLUT for -// almost any transform. We use floating point precision and then convert from floating point to 16 bits. -static -int XFormSampler16(register const cmsUInt16Number In[], register cmsUInt16Number Out[], register void* Cargo) -{ - cmsPipeline* Lut = (cmsPipeline*) Cargo; - cmsFloat32Number InFloat[cmsMAXCHANNELS], OutFloat[cmsMAXCHANNELS]; - cmsUInt32Number i; - - _cmsAssert(Lut -> InputChannels < cmsMAXCHANNELS); - _cmsAssert(Lut -> OutputChannels < cmsMAXCHANNELS); - - // From 16 bit to floating point - for (i=0; i < Lut ->InputChannels; i++) - InFloat[i] = (cmsFloat32Number) (In[i] / 65535.0); - - // Evaluate in floating point - cmsPipelineEvalFloat(InFloat, OutFloat, Lut); - - // Back to 16 bits representation - for (i=0; i < Lut ->OutputChannels; i++) - Out[i] = _cmsQuickSaturateWord(OutFloat[i] * 65535.0); - - // Always succeed - return TRUE; -} - -// Try to see if the curves of a given MPE are linear -static -cmsBool AllCurvesAreLinear(cmsStage* mpe) -{ - cmsToneCurve** Curves; - cmsUInt32Number i, n; - - Curves = _cmsStageGetPtrToCurveSet(mpe); - if (Curves == NULL) return FALSE; - - n = cmsStageOutputChannels(mpe); - - for (i=0; i < n; i++) { - if (!cmsIsToneCurveLinear(Curves[i])) return FALSE; - } - - return TRUE; -} - -// This function replaces a specific node placed in "At" by the "Value" numbers. Its purpose -// is to fix scum dot on broken profiles/transforms. Works on 1, 3 and 4 channels -static -cmsBool PatchLUT(cmsStage* CLUT, cmsUInt16Number At[], cmsUInt16Number Value[], - int nChannelsOut, int nChannelsIn) -{ - _cmsStageCLutData* Grid = (_cmsStageCLutData*) CLUT ->Data; - cmsInterpParams* p16 = Grid ->Params; - cmsFloat64Number px, py, pz, pw; - int x0, y0, z0, w0; - int i, index; - - if (CLUT -> Type != cmsSigCLutElemType) { - cmsSignalError(CLUT->ContextID, cmsERROR_INTERNAL, "(internal) Attempt to PatchLUT on non-lut stage"); - return FALSE; - } - - if (nChannelsIn != 1 && nChannelsIn != 3 && nChannelsIn != 4) { - cmsSignalError(CLUT->ContextID, cmsERROR_INTERNAL, "(internal) %d Channels are not supported on PatchLUT", nChannelsIn); - return FALSE; - } - if (nChannelsIn == 4) { - - px = ((cmsFloat64Number) At[0] * (p16->Domain[0])) / 65535.0; - py = ((cmsFloat64Number) At[1] * (p16->Domain[1])) / 65535.0; - pz = ((cmsFloat64Number) At[2] * (p16->Domain[2])) / 65535.0; - pw = ((cmsFloat64Number) At[3] * (p16->Domain[3])) / 65535.0; - - x0 = (int) floor(px); - y0 = (int) floor(py); - z0 = (int) floor(pz); - w0 = (int) floor(pw); - - if (((px - x0) != 0) || - ((py - y0) != 0) || - ((pz - z0) != 0) || - ((pw - w0) != 0)) return FALSE; // Not on exact node - - index = p16 -> opta[3] * x0 + - p16 -> opta[2] * y0 + - p16 -> opta[1] * z0 + - p16 -> opta[0] * w0; - } - else - if (nChannelsIn == 3) { - - px = ((cmsFloat64Number) At[0] * (p16->Domain[0])) / 65535.0; - py = ((cmsFloat64Number) At[1] * (p16->Domain[1])) / 65535.0; - pz = ((cmsFloat64Number) At[2] * (p16->Domain[2])) / 65535.0; - - x0 = (int) floor(px); - y0 = (int) floor(py); - z0 = (int) floor(pz); - - if (((px - x0) != 0) || - ((py - y0) != 0) || - ((pz - z0) != 0)) return FALSE; // Not on exact node - - index = p16 -> opta[2] * x0 + - p16 -> opta[1] * y0 + - p16 -> opta[0] * z0; - } - else - if (nChannelsIn == 1) { - - px = ((cmsFloat64Number) At[0] * (p16->Domain[0])) / 65535.0; - - x0 = (int) floor(px); - - if (((px - x0) != 0)) return FALSE; // Not on exact node - - index = p16 -> opta[0] * x0; - } - else { - cmsSignalError(CLUT->ContextID, cmsERROR_INTERNAL, "(internal) %d Channels are not supported on PatchLUT", nChannelsIn); - return FALSE; - } - - for (i=0; i < nChannelsOut; i++) - Grid -> Tab.T[index + i] = Value[i]; - - return TRUE; -} - -// Auxiliar, to see if two values are equal or very different -static -cmsBool WhitesAreEqual(int n, cmsUInt16Number White1[], cmsUInt16Number White2[] ) -{ - int i; - - for (i=0; i < n; i++) { - - if (abs(White1[i] - White2[i]) > 0xf000) return TRUE; // Values are so extremly different that the fixup should be avoided - if (White1[i] != White2[i]) return FALSE; - } - return TRUE; -} - - -// Locate the node for the white point and fix it to pure white in order to avoid scum dot. -static -cmsBool FixWhiteMisalignment(cmsPipeline* Lut, cmsColorSpaceSignature EntryColorSpace, cmsColorSpaceSignature ExitColorSpace) -{ - cmsUInt16Number *WhitePointIn, *WhitePointOut; - cmsUInt16Number WhiteIn[cmsMAXCHANNELS], WhiteOut[cmsMAXCHANNELS], ObtainedOut[cmsMAXCHANNELS]; - cmsUInt32Number i, nOuts, nIns; - cmsStage *PreLin = NULL, *CLUT = NULL, *PostLin = NULL; - - if (!_cmsEndPointsBySpace(EntryColorSpace, - &WhitePointIn, NULL, &nIns)) return FALSE; - - if (!_cmsEndPointsBySpace(ExitColorSpace, - &WhitePointOut, NULL, &nOuts)) return FALSE; - - // It needs to be fixed? - if (Lut ->InputChannels != nIns) return FALSE; - if (Lut ->OutputChannels != nOuts) return FALSE; - - cmsPipelineEval16(WhitePointIn, ObtainedOut, Lut); - - if (WhitesAreEqual(nOuts, WhitePointOut, ObtainedOut)) return TRUE; // whites already match - - // Check if the LUT comes as Prelin, CLUT or Postlin. We allow all combinations - if (!cmsPipelineCheckAndRetreiveStages(Lut, 3, cmsSigCurveSetElemType, cmsSigCLutElemType, cmsSigCurveSetElemType, &PreLin, &CLUT, &PostLin)) - if (!cmsPipelineCheckAndRetreiveStages(Lut, 2, cmsSigCurveSetElemType, cmsSigCLutElemType, &PreLin, &CLUT)) - if (!cmsPipelineCheckAndRetreiveStages(Lut, 2, cmsSigCLutElemType, cmsSigCurveSetElemType, &CLUT, &PostLin)) - if (!cmsPipelineCheckAndRetreiveStages(Lut, 1, cmsSigCLutElemType, &CLUT)) - return FALSE; - - // We need to interpolate white points of both, pre and post curves - if (PreLin) { - - cmsToneCurve** Curves = _cmsStageGetPtrToCurveSet(PreLin); - - for (i=0; i < nIns; i++) { - WhiteIn[i] = cmsEvalToneCurve16(Curves[i], WhitePointIn[i]); - } - } - else { - for (i=0; i < nIns; i++) - WhiteIn[i] = WhitePointIn[i]; - } - - // If any post-linearization, we need to find how is represented white before the curve, do - // a reverse interpolation in this case. - if (PostLin) { - - cmsToneCurve** Curves = _cmsStageGetPtrToCurveSet(PostLin); - - for (i=0; i < nOuts; i++) { - - cmsToneCurve* InversePostLin = cmsReverseToneCurve(Curves[i]); - if (InversePostLin == NULL) { - WhiteOut[i] = WhitePointOut[i]; - - } else { - - WhiteOut[i] = cmsEvalToneCurve16(InversePostLin, WhitePointOut[i]); - cmsFreeToneCurve(InversePostLin); - } - } - } - else { - for (i=0; i < nOuts; i++) - WhiteOut[i] = WhitePointOut[i]; - } - - // Ok, proceed with patching. May fail and we don't care if it fails - PatchLUT(CLUT, WhiteIn, WhiteOut, nOuts, nIns); - - return TRUE; -} - -// ----------------------------------------------------------------------------------------------------------------------------------------------- -// This function creates simple LUT from complex ones. The generated LUT has an optional set of -// prelinearization curves, a CLUT of nGridPoints and optional postlinearization tables. -// These curves have to exist in the original LUT in order to be used in the simplified output. -// Caller may also use the flags to allow this feature. -// LUTS with all curves will be simplified to a single curve. Parametric curves are lost. -// This function should be used on 16-bits LUTS only, as floating point losses precision when simplified -// ----------------------------------------------------------------------------------------------------------------------------------------------- - -static -cmsBool OptimizeByResampling(cmsPipeline** Lut, cmsUInt32Number Intent, cmsUInt32Number* InputFormat, cmsUInt32Number* OutputFormat, cmsUInt32Number* dwFlags) -{ - cmsPipeline* Src = NULL; - cmsPipeline* Dest = NULL; - cmsStage* mpe; - cmsStage* CLUT; - cmsStage *KeepPreLin = NULL, *KeepPostLin = NULL; - int nGridPoints; - cmsColorSpaceSignature ColorSpace, OutputColorSpace; - cmsStage *NewPreLin = NULL; - cmsStage *NewPostLin = NULL; - _cmsStageCLutData* DataCLUT; - cmsToneCurve** DataSetIn; - cmsToneCurve** DataSetOut; - Prelin16Data* p16; - - // This is a loosy optimization! does not apply in floating-point cases - if (_cmsFormatterIsFloat(*InputFormat) || _cmsFormatterIsFloat(*OutputFormat)) return FALSE; - - ColorSpace = _cmsICCcolorSpace(T_COLORSPACE(*InputFormat)); - OutputColorSpace = _cmsICCcolorSpace(T_COLORSPACE(*OutputFormat)); - nGridPoints = _cmsReasonableGridpointsByColorspace(ColorSpace, *dwFlags); - - // For empty LUTs, 2 points are enough - if (cmsPipelineStageCount(*Lut) == 0) - nGridPoints = 2; - - Src = *Lut; - - // Named color pipelines cannot be optimized either - for (mpe = cmsPipelineGetPtrToFirstStage(Src); - mpe != NULL; - mpe = cmsStageNext(mpe)) { - if (cmsStageType(mpe) == cmsSigNamedColorElemType) return FALSE; - } - - // Allocate an empty LUT - Dest = cmsPipelineAlloc(Src ->ContextID, Src ->InputChannels, Src ->OutputChannels); - if (!Dest) return FALSE; - - // Prelinearization tables are kept unless indicated by flags - if (*dwFlags & cmsFLAGS_CLUT_PRE_LINEARIZATION) { - - // Get a pointer to the prelinearization element - cmsStage* PreLin = cmsPipelineGetPtrToFirstStage(Src); - - // Check if suitable - if (PreLin ->Type == cmsSigCurveSetElemType) { - - // Maybe this is a linear tram, so we can avoid the whole stuff - if (!AllCurvesAreLinear(PreLin)) { - - // All seems ok, proceed. - NewPreLin = cmsStageDup(PreLin); - if(!cmsPipelineInsertStage(Dest, cmsAT_BEGIN, NewPreLin)) - goto Error; - - // Remove prelinearization. Since we have duplicated the curve - // in destination LUT, the sampling shoud be applied after this stage. - cmsPipelineUnlinkStage(Src, cmsAT_BEGIN, &KeepPreLin); - } - } - } - - // Allocate the CLUT - CLUT = cmsStageAllocCLut16bit(Src ->ContextID, nGridPoints, Src ->InputChannels, Src->OutputChannels, NULL); - if (CLUT == NULL) goto Error; - - // Add the CLUT to the destination LUT - if (!cmsPipelineInsertStage(Dest, cmsAT_END, CLUT)) { - goto Error; - } - - // Postlinearization tables are kept unless indicated by flags - if (*dwFlags & cmsFLAGS_CLUT_POST_LINEARIZATION) { - - // Get a pointer to the postlinearization if present - cmsStage* PostLin = cmsPipelineGetPtrToLastStage(Src); - - // Check if suitable - if (cmsStageType(PostLin) == cmsSigCurveSetElemType) { - - // Maybe this is a linear tram, so we can avoid the whole stuff - if (!AllCurvesAreLinear(PostLin)) { - - // All seems ok, proceed. - NewPostLin = cmsStageDup(PostLin); - if (!cmsPipelineInsertStage(Dest, cmsAT_END, NewPostLin)) - goto Error; - - // In destination LUT, the sampling shoud be applied after this stage. - cmsPipelineUnlinkStage(Src, cmsAT_END, &KeepPostLin); - } - } - } - - // Now its time to do the sampling. We have to ignore pre/post linearization - // The source LUT whithout pre/post curves is passed as parameter. - if (!cmsStageSampleCLut16bit(CLUT, XFormSampler16, (void*) Src, 0)) { -Error: - // Ops, something went wrong, Restore stages - if (KeepPreLin != NULL) { - if (!cmsPipelineInsertStage(Src, cmsAT_BEGIN, KeepPreLin)) { - _cmsAssert(0); // This never happens - } - } - if (KeepPostLin != NULL) { - if (!cmsPipelineInsertStage(Src, cmsAT_END, KeepPostLin)) { - _cmsAssert(0); // This never happens - } - } - cmsPipelineFree(Dest); - return FALSE; - } - - // Done. - - if (KeepPreLin != NULL) cmsStageFree(KeepPreLin); - if (KeepPostLin != NULL) cmsStageFree(KeepPostLin); - cmsPipelineFree(Src); - - DataCLUT = (_cmsStageCLutData*) CLUT ->Data; - - if (NewPreLin == NULL) DataSetIn = NULL; - else DataSetIn = ((_cmsStageToneCurvesData*) NewPreLin ->Data) ->TheCurves; - - if (NewPostLin == NULL) DataSetOut = NULL; - else DataSetOut = ((_cmsStageToneCurvesData*) NewPostLin ->Data) ->TheCurves; - - - if (DataSetIn == NULL && DataSetOut == NULL) { - - _cmsPipelineSetOptimizationParameters(Dest, (_cmsOPTeval16Fn) DataCLUT->Params->Interpolation.Lerp16, DataCLUT->Params, NULL, NULL); - } - else { - - p16 = PrelinOpt16alloc(Dest ->ContextID, - DataCLUT ->Params, - Dest ->InputChannels, - DataSetIn, - Dest ->OutputChannels, - DataSetOut); - - _cmsPipelineSetOptimizationParameters(Dest, PrelinEval16, (void*) p16, PrelinOpt16free, Prelin16dup); - } - - - // Don't fix white on absolute colorimetric - if (Intent == INTENT_ABSOLUTE_COLORIMETRIC) - *dwFlags |= cmsFLAGS_NOWHITEONWHITEFIXUP; - - if (!(*dwFlags & cmsFLAGS_NOWHITEONWHITEFIXUP)) { - - FixWhiteMisalignment(Dest, ColorSpace, OutputColorSpace); - } - - *Lut = Dest; - return TRUE; - - cmsUNUSED_PARAMETER(Intent); -} - - -// ----------------------------------------------------------------------------------------------------------------------------------------------- -// Fixes the gamma balancing of transform. This is described in my paper "Prelinearization Stages on -// Color-Management Application-Specific Integrated Circuits (ASICs)" presented at NIP24. It only works -// for RGB transforms. See the paper for more details -// ----------------------------------------------------------------------------------------------------------------------------------------------- - - -// Normalize endpoints by slope limiting max and min. This assures endpoints as well. -// Descending curves are handled as well. -static -void SlopeLimiting(cmsToneCurve* g) -{ - int BeginVal, EndVal; - int AtBegin = (int) floor((cmsFloat64Number) g ->nEntries * 0.02 + 0.5); // Cutoff at 2% - int AtEnd = g ->nEntries - AtBegin - 1; // And 98% - cmsFloat64Number Val, Slope, beta; - int i; - - if (cmsIsToneCurveDescending(g)) { - BeginVal = 0xffff; EndVal = 0; - } - else { - BeginVal = 0; EndVal = 0xffff; - } - - // Compute slope and offset for begin of curve - Val = g ->Table16[AtBegin]; - Slope = (Val - BeginVal) / AtBegin; - beta = Val - Slope * AtBegin; - - for (i=0; i < AtBegin; i++) - g ->Table16[i] = _cmsQuickSaturateWord(i * Slope + beta); - - // Compute slope and offset for the end - Val = g ->Table16[AtEnd]; - Slope = (EndVal - Val) / AtBegin; // AtBegin holds the X interval, which is same in both cases - beta = Val - Slope * AtEnd; - - for (i = AtEnd; i < (int) g ->nEntries; i++) - g ->Table16[i] = _cmsQuickSaturateWord(i * Slope + beta); -} - - -// Precomputes tables for 8-bit on input devicelink. -static -Prelin8Data* PrelinOpt8alloc(cmsContext ContextID, const cmsInterpParams* p, cmsToneCurve* G[3]) -{ - int i; - cmsUInt16Number Input[3]; - cmsS15Fixed16Number v1, v2, v3; - Prelin8Data* p8; - - p8 = (Prelin8Data*)_cmsMallocZero(ContextID, sizeof(Prelin8Data)); - if (p8 == NULL) return NULL; - - // Since this only works for 8 bit input, values comes always as x * 257, - // we can safely take msb byte (x << 8 + x) - - for (i=0; i < 256; i++) { - - if (G != NULL) { - - // Get 16-bit representation - Input[0] = cmsEvalToneCurve16(G[0], FROM_8_TO_16(i)); - Input[1] = cmsEvalToneCurve16(G[1], FROM_8_TO_16(i)); - Input[2] = cmsEvalToneCurve16(G[2], FROM_8_TO_16(i)); - } - else { - Input[0] = FROM_8_TO_16(i); - Input[1] = FROM_8_TO_16(i); - Input[2] = FROM_8_TO_16(i); - } - - - // Move to 0..1.0 in fixed domain - v1 = _cmsToFixedDomain(Input[0] * p -> Domain[0]); - v2 = _cmsToFixedDomain(Input[1] * p -> Domain[1]); - v3 = _cmsToFixedDomain(Input[2] * p -> Domain[2]); - - // Store the precalculated table of nodes - p8 ->X0[i] = (p->opta[2] * FIXED_TO_INT(v1)); - p8 ->Y0[i] = (p->opta[1] * FIXED_TO_INT(v2)); - p8 ->Z0[i] = (p->opta[0] * FIXED_TO_INT(v3)); - - // Store the precalculated table of offsets - p8 ->rx[i] = (cmsUInt16Number) FIXED_REST_TO_INT(v1); - p8 ->ry[i] = (cmsUInt16Number) FIXED_REST_TO_INT(v2); - p8 ->rz[i] = (cmsUInt16Number) FIXED_REST_TO_INT(v3); - } - - p8 ->ContextID = ContextID; - p8 ->p = p; - - return p8; -} - -static -void Prelin8free(cmsContext ContextID, void* ptr) -{ - _cmsFree(ContextID, ptr); -} - -static -void* Prelin8dup(cmsContext ContextID, const void* ptr) -{ - return _cmsDupMem(ContextID, ptr, sizeof(Prelin8Data)); -} - - - -// A optimized interpolation for 8-bit input. -#define DENS(i,j,k) (LutTable[(i)+(j)+(k)+OutChan]) -static -void PrelinEval8(register const cmsUInt16Number Input[], - register cmsUInt16Number Output[], - register const void* D) -{ - - cmsUInt8Number r, g, b; - cmsS15Fixed16Number rx, ry, rz; - cmsS15Fixed16Number c0, c1, c2, c3, Rest; - int OutChan; - register cmsS15Fixed16Number X0, X1, Y0, Y1, Z0, Z1; - Prelin8Data* p8 = (Prelin8Data*) D; - register const cmsInterpParams* p = p8 ->p; - int TotalOut = p -> nOutputs; - const cmsUInt16Number* LutTable = (const cmsUInt16Number*)p -> Table; - - r = Input[0] >> 8; - g = Input[1] >> 8; - b = Input[2] >> 8; - - X0 = X1 = p8->X0[r]; - Y0 = Y1 = p8->Y0[g]; - Z0 = Z1 = p8->Z0[b]; - - rx = p8 ->rx[r]; - ry = p8 ->ry[g]; - rz = p8 ->rz[b]; - - X1 = X0 + ((rx == 0) ? 0 : p ->opta[2]); - Y1 = Y0 + ((ry == 0) ? 0 : p ->opta[1]); - Z1 = Z0 + ((rz == 0) ? 0 : p ->opta[0]); - - - // These are the 6 Tetrahedral - for (OutChan=0; OutChan < TotalOut; OutChan++) { - - c0 = DENS(X0, Y0, Z0); - - if (rx >= ry && ry >= rz) - { - c1 = DENS(X1, Y0, Z0) - c0; - c2 = DENS(X1, Y1, Z0) - DENS(X1, Y0, Z0); - c3 = DENS(X1, Y1, Z1) - DENS(X1, Y1, Z0); - } - else - if (rx >= rz && rz >= ry) - { - c1 = DENS(X1, Y0, Z0) - c0; - c2 = DENS(X1, Y1, Z1) - DENS(X1, Y0, Z1); - c3 = DENS(X1, Y0, Z1) - DENS(X1, Y0, Z0); - } - else - if (rz >= rx && rx >= ry) - { - c1 = DENS(X1, Y0, Z1) - DENS(X0, Y0, Z1); - c2 = DENS(X1, Y1, Z1) - DENS(X1, Y0, Z1); - c3 = DENS(X0, Y0, Z1) - c0; - } - else - if (ry >= rx && rx >= rz) - { - c1 = DENS(X1, Y1, Z0) - DENS(X0, Y1, Z0); - c2 = DENS(X0, Y1, Z0) - c0; - c3 = DENS(X1, Y1, Z1) - DENS(X1, Y1, Z0); - } - else - if (ry >= rz && rz >= rx) - { - c1 = DENS(X1, Y1, Z1) - DENS(X0, Y1, Z1); - c2 = DENS(X0, Y1, Z0) - c0; - c3 = DENS(X0, Y1, Z1) - DENS(X0, Y1, Z0); - } - else - if (rz >= ry && ry >= rx) - { - c1 = DENS(X1, Y1, Z1) - DENS(X0, Y1, Z1); - c2 = DENS(X0, Y1, Z1) - DENS(X0, Y0, Z1); - c3 = DENS(X0, Y0, Z1) - c0; - } - else { - c1 = c2 = c3 = 0; - } - - - Rest = c1 * rx + c2 * ry + c3 * rz + 0x8001; - Output[OutChan] = (cmsUInt16Number)c0 + ((Rest + (Rest>>16))>>16); - - } -} - -#undef DENS - - -// Curves that contain wide empty areas are not optimizeable -static -cmsBool IsDegenerated(const cmsToneCurve* g) -{ - int i, Zeros = 0, Poles = 0; - int nEntries = g ->nEntries; - - for (i=0; i < nEntries; i++) { - - if (g ->Table16[i] == 0x0000) Zeros++; - if (g ->Table16[i] == 0xffff) Poles++; - } - - if (Zeros == 1 && Poles == 1) return FALSE; // For linear tables - if (Zeros > (nEntries / 4)) return TRUE; // Degenerated, mostly zeros - if (Poles > (nEntries / 4)) return TRUE; // Degenerated, mostly poles - - return FALSE; -} - -// -------------------------------------------------------------------------------------------------------------- -// We need xput over here - -static -cmsBool OptimizeByComputingLinearization(cmsPipeline** Lut, cmsUInt32Number Intent, cmsUInt32Number* InputFormat, cmsUInt32Number* OutputFormat, cmsUInt32Number* dwFlags) -{ - cmsPipeline* OriginalLut; - int nGridPoints; - cmsToneCurve *Trans[cmsMAXCHANNELS], *TransReverse[cmsMAXCHANNELS]; - cmsUInt32Number t, i; - cmsFloat32Number v, In[cmsMAXCHANNELS], Out[cmsMAXCHANNELS]; - cmsBool lIsSuitable, lIsLinear; - cmsPipeline* OptimizedLUT = NULL, *LutPlusCurves = NULL; - cmsStage* OptimizedCLUTmpe; - cmsColorSpaceSignature ColorSpace, OutputColorSpace; - cmsStage* OptimizedPrelinMpe; - cmsStage* mpe; - cmsToneCurve** OptimizedPrelinCurves; - _cmsStageCLutData* OptimizedPrelinCLUT; - - - // This is a loosy optimization! does not apply in floating-point cases - if (_cmsFormatterIsFloat(*InputFormat) || _cmsFormatterIsFloat(*OutputFormat)) return FALSE; - - // Only on RGB - if (T_COLORSPACE(*InputFormat) != PT_RGB) return FALSE; - if (T_COLORSPACE(*OutputFormat) != PT_RGB) return FALSE; - - - // On 16 bits, user has to specify the feature - if (!_cmsFormatterIs8bit(*InputFormat)) { - if (!(*dwFlags & cmsFLAGS_CLUT_PRE_LINEARIZATION)) return FALSE; - } - - OriginalLut = *Lut; - - // Named color pipelines cannot be optimized either - for (mpe = cmsPipelineGetPtrToFirstStage(OriginalLut); - mpe != NULL; - mpe = cmsStageNext(mpe)) { - if (cmsStageType(mpe) == cmsSigNamedColorElemType) return FALSE; - } - - ColorSpace = _cmsICCcolorSpace(T_COLORSPACE(*InputFormat)); - OutputColorSpace = _cmsICCcolorSpace(T_COLORSPACE(*OutputFormat)); - nGridPoints = _cmsReasonableGridpointsByColorspace(ColorSpace, *dwFlags); - - // Empty gamma containers - memset(Trans, 0, sizeof(Trans)); - memset(TransReverse, 0, sizeof(TransReverse)); - - for (t = 0; t < OriginalLut ->InputChannels; t++) { - Trans[t] = cmsBuildTabulatedToneCurve16(OriginalLut ->ContextID, PRELINEARIZATION_POINTS, NULL); - if (Trans[t] == NULL) goto Error; - } - - // Populate the curves - for (i=0; i < PRELINEARIZATION_POINTS; i++) { - - v = (cmsFloat32Number) ((cmsFloat64Number) i / (PRELINEARIZATION_POINTS - 1)); - - // Feed input with a gray ramp - for (t=0; t < OriginalLut ->InputChannels; t++) - In[t] = v; - - // Evaluate the gray value - cmsPipelineEvalFloat(In, Out, OriginalLut); - - // Store result in curve - for (t=0; t < OriginalLut ->InputChannels; t++) - Trans[t] ->Table16[i] = _cmsQuickSaturateWord(Out[t] * 65535.0); - } - - // Slope-limit the obtained curves - for (t = 0; t < OriginalLut ->InputChannels; t++) - SlopeLimiting(Trans[t]); - - // Check for validity - lIsSuitable = TRUE; - lIsLinear = TRUE; - for (t=0; (lIsSuitable && (t < OriginalLut ->InputChannels)); t++) { - - // Exclude if already linear - if (!cmsIsToneCurveLinear(Trans[t])) - lIsLinear = FALSE; - - // Exclude if non-monotonic - if (!cmsIsToneCurveMonotonic(Trans[t])) - lIsSuitable = FALSE; - - if (IsDegenerated(Trans[t])) - lIsSuitable = FALSE; - } - - // If it is not suitable, just quit - if (!lIsSuitable) goto Error; - - // Invert curves if possible - for (t = 0; t < OriginalLut ->InputChannels; t++) { - TransReverse[t] = cmsReverseToneCurveEx(PRELINEARIZATION_POINTS, Trans[t]); - if (TransReverse[t] == NULL) goto Error; - } - - // Now inset the reversed curves at the begin of transform - LutPlusCurves = cmsPipelineDup(OriginalLut); - if (LutPlusCurves == NULL) goto Error; - - if (!cmsPipelineInsertStage(LutPlusCurves, cmsAT_BEGIN, cmsStageAllocToneCurves(OriginalLut ->ContextID, OriginalLut ->InputChannels, TransReverse))) - goto Error; - - // Create the result LUT - OptimizedLUT = cmsPipelineAlloc(OriginalLut ->ContextID, OriginalLut ->InputChannels, OriginalLut ->OutputChannels); - if (OptimizedLUT == NULL) goto Error; - - OptimizedPrelinMpe = cmsStageAllocToneCurves(OriginalLut ->ContextID, OriginalLut ->InputChannels, Trans); - - // Create and insert the curves at the beginning - if (!cmsPipelineInsertStage(OptimizedLUT, cmsAT_BEGIN, OptimizedPrelinMpe)) - goto Error; - - // Allocate the CLUT for result - OptimizedCLUTmpe = cmsStageAllocCLut16bit(OriginalLut ->ContextID, nGridPoints, OriginalLut ->InputChannels, OriginalLut ->OutputChannels, NULL); - - // Add the CLUT to the destination LUT - if (!cmsPipelineInsertStage(OptimizedLUT, cmsAT_END, OptimizedCLUTmpe)) - goto Error; - - // Resample the LUT - if (!cmsStageSampleCLut16bit(OptimizedCLUTmpe, XFormSampler16, (void*) LutPlusCurves, 0)) goto Error; - - // Free resources - for (t = 0; t < OriginalLut ->InputChannels; t++) { - - if (Trans[t]) cmsFreeToneCurve(Trans[t]); - if (TransReverse[t]) cmsFreeToneCurve(TransReverse[t]); - } - - cmsPipelineFree(LutPlusCurves); - - - OptimizedPrelinCurves = _cmsStageGetPtrToCurveSet(OptimizedPrelinMpe); - OptimizedPrelinCLUT = (_cmsStageCLutData*) OptimizedCLUTmpe ->Data; - - // Set the evaluator if 8-bit - if (_cmsFormatterIs8bit(*InputFormat)) { - - Prelin8Data* p8 = PrelinOpt8alloc(OptimizedLUT ->ContextID, - OptimizedPrelinCLUT ->Params, - OptimizedPrelinCurves); - if (p8 == NULL) return FALSE; - - _cmsPipelineSetOptimizationParameters(OptimizedLUT, PrelinEval8, (void*) p8, Prelin8free, Prelin8dup); - - } - else - { - Prelin16Data* p16 = PrelinOpt16alloc(OptimizedLUT ->ContextID, - OptimizedPrelinCLUT ->Params, - 3, OptimizedPrelinCurves, 3, NULL); - if (p16 == NULL) return FALSE; - - _cmsPipelineSetOptimizationParameters(OptimizedLUT, PrelinEval16, (void*) p16, PrelinOpt16free, Prelin16dup); - - } - - // Don't fix white on absolute colorimetric - if (Intent == INTENT_ABSOLUTE_COLORIMETRIC) - *dwFlags |= cmsFLAGS_NOWHITEONWHITEFIXUP; - - if (!(*dwFlags & cmsFLAGS_NOWHITEONWHITEFIXUP)) { - - if (!FixWhiteMisalignment(OptimizedLUT, ColorSpace, OutputColorSpace)) { - - return FALSE; - } - } - - // And return the obtained LUT - - cmsPipelineFree(OriginalLut); - *Lut = OptimizedLUT; - return TRUE; - -Error: - - for (t = 0; t < OriginalLut ->InputChannels; t++) { - - if (Trans[t]) cmsFreeToneCurve(Trans[t]); - if (TransReverse[t]) cmsFreeToneCurve(TransReverse[t]); - } - - if (LutPlusCurves != NULL) cmsPipelineFree(LutPlusCurves); - if (OptimizedLUT != NULL) cmsPipelineFree(OptimizedLUT); - - return FALSE; - - cmsUNUSED_PARAMETER(Intent); -} - - -// Curves optimizer ------------------------------------------------------------------------------------------------------------------ - -static -void CurvesFree(cmsContext ContextID, void* ptr) -{ - Curves16Data* Data = (Curves16Data*) ptr; - int i; - - for (i=0; i < Data -> nCurves; i++) { - - _cmsFree(ContextID, Data ->Curves[i]); - } - - _cmsFree(ContextID, Data ->Curves); - _cmsFree(ContextID, ptr); -} - -static -void* CurvesDup(cmsContext ContextID, const void* ptr) -{ - Curves16Data* Data = (Curves16Data*)_cmsDupMem(ContextID, ptr, sizeof(Curves16Data)); - int i; - - if (Data == NULL) return NULL; - - Data ->Curves = (cmsUInt16Number**)_cmsDupMem(ContextID, Data ->Curves, Data ->nCurves * sizeof(cmsUInt16Number*)); - - for (i=0; i < Data -> nCurves; i++) { - Data ->Curves[i] = (cmsUInt16Number*)_cmsDupMem(ContextID, Data ->Curves[i], Data -> nElements * sizeof(cmsUInt16Number)); - } - - return (void*) Data; -} - -// Precomputes tables for 8-bit on input devicelink. -static -Curves16Data* CurvesAlloc(cmsContext ContextID, int nCurves, int nElements, cmsToneCurve** G) -{ - int i, j; - Curves16Data* c16; - - c16 = (Curves16Data*)_cmsMallocZero(ContextID, sizeof(Curves16Data)); - if (c16 == NULL) return NULL; - - c16 ->nCurves = nCurves; - c16 ->nElements = nElements; - - c16 ->Curves = (cmsUInt16Number**)_cmsCalloc(ContextID, nCurves, sizeof(cmsUInt16Number*)); - if (c16 ->Curves == NULL) return NULL; - - for (i=0; i < nCurves; i++) { - - c16->Curves[i] = (cmsUInt16Number*)_cmsCalloc(ContextID, nElements, sizeof(cmsUInt16Number)); - - if (c16->Curves[i] == NULL) { - - for (j=0; j < i; j++) { - _cmsFree(ContextID, c16->Curves[j]); - } - _cmsFree(ContextID, c16->Curves); - _cmsFree(ContextID, c16); - return NULL; - } - - if (nElements == 256) { - - for (j=0; j < nElements; j++) { - - c16 ->Curves[i][j] = cmsEvalToneCurve16(G[i], FROM_8_TO_16(j)); - } - } - else { - - for (j=0; j < nElements; j++) { - c16 ->Curves[i][j] = cmsEvalToneCurve16(G[i], (cmsUInt16Number) j); - } - } - } - - return c16; -} - -static -void FastEvaluateCurves8(register const cmsUInt16Number In[], - register cmsUInt16Number Out[], - register const void* D) -{ - Curves16Data* Data = (Curves16Data*) D; - cmsUInt8Number x; - int i; - - for (i=0; i < Data ->nCurves; i++) { - - x = (In[i] >> 8); - Out[i] = Data -> Curves[i][x]; - } -} - - -static -void FastEvaluateCurves16(register const cmsUInt16Number In[], - register cmsUInt16Number Out[], - register const void* D) -{ - Curves16Data* Data = (Curves16Data*) D; - int i; - - for (i=0; i < Data ->nCurves; i++) { - Out[i] = Data -> Curves[i][In[i]]; - } -} - - -static -void FastIdentity16(register const cmsUInt16Number In[], - register cmsUInt16Number Out[], - register const void* D) -{ - cmsPipeline* Lut = (cmsPipeline*) D; - cmsUInt32Number i; - - for (i=0; i < Lut ->InputChannels; i++) { - Out[i] = In[i]; - } -} - - -// If the target LUT holds only curves, the optimization procedure is to join all those -// curves together. That only works on curves and does not work on matrices. -static -cmsBool OptimizeByJoiningCurves(cmsPipeline** Lut, cmsUInt32Number Intent, cmsUInt32Number* InputFormat, cmsUInt32Number* OutputFormat, cmsUInt32Number* dwFlags) -{ - cmsToneCurve** GammaTables = NULL; - cmsFloat32Number InFloat[cmsMAXCHANNELS], OutFloat[cmsMAXCHANNELS]; - cmsUInt32Number i, j; - cmsPipeline* Src = *Lut; - cmsPipeline* Dest = NULL; - cmsStage* mpe; - cmsStage* ObtainedCurves = NULL; - - - // This is a loosy optimization! does not apply in floating-point cases - if (_cmsFormatterIsFloat(*InputFormat) || _cmsFormatterIsFloat(*OutputFormat)) return FALSE; - - // Only curves in this LUT? - for (mpe = cmsPipelineGetPtrToFirstStage(Src); - mpe != NULL; - mpe = cmsStageNext(mpe)) { - if (cmsStageType(mpe) != cmsSigCurveSetElemType) return FALSE; - } - - // Allocate an empty LUT - Dest = cmsPipelineAlloc(Src ->ContextID, Src ->InputChannels, Src ->OutputChannels); - if (Dest == NULL) return FALSE; - - // Create target curves - GammaTables = (cmsToneCurve**) _cmsCalloc(Src ->ContextID, Src ->InputChannels, sizeof(cmsToneCurve*)); - if (GammaTables == NULL) goto Error; - - for (i=0; i < Src ->InputChannels; i++) { - GammaTables[i] = cmsBuildTabulatedToneCurve16(Src ->ContextID, PRELINEARIZATION_POINTS, NULL); - if (GammaTables[i] == NULL) goto Error; - } - - // Compute 16 bit result by using floating point - for (i=0; i < PRELINEARIZATION_POINTS; i++) { - - for (j=0; j < Src ->InputChannels; j++) - InFloat[j] = (cmsFloat32Number) ((cmsFloat64Number) i / (PRELINEARIZATION_POINTS - 1)); - - cmsPipelineEvalFloat(InFloat, OutFloat, Src); - - for (j=0; j < Src ->InputChannels; j++) - GammaTables[j] -> Table16[i] = _cmsQuickSaturateWord(OutFloat[j] * 65535.0); - } - - ObtainedCurves = cmsStageAllocToneCurves(Src ->ContextID, Src ->InputChannels, GammaTables); - if (ObtainedCurves == NULL) goto Error; - - for (i=0; i < Src ->InputChannels; i++) { - cmsFreeToneCurve(GammaTables[i]); - GammaTables[i] = NULL; - } - - if (GammaTables != NULL) _cmsFree(Src ->ContextID, GammaTables); - - // Maybe the curves are linear at the end - if (!AllCurvesAreLinear(ObtainedCurves)) { - - if (!cmsPipelineInsertStage(Dest, cmsAT_BEGIN, ObtainedCurves)) - goto Error; - - // If the curves are to be applied in 8 bits, we can save memory - if (_cmsFormatterIs8bit(*InputFormat)) { - - _cmsStageToneCurvesData* Data = (_cmsStageToneCurvesData*) ObtainedCurves ->Data; - Curves16Data* c16 = CurvesAlloc(Dest ->ContextID, Data ->nCurves, 256, Data ->TheCurves); - - if (c16 == NULL) goto Error; - *dwFlags |= cmsFLAGS_NOCACHE; - _cmsPipelineSetOptimizationParameters(Dest, FastEvaluateCurves8, c16, CurvesFree, CurvesDup); - - } - else { - - _cmsStageToneCurvesData* Data = (_cmsStageToneCurvesData*) cmsStageData(ObtainedCurves); - Curves16Data* c16 = CurvesAlloc(Dest ->ContextID, Data ->nCurves, 65536, Data ->TheCurves); - - if (c16 == NULL) goto Error; - *dwFlags |= cmsFLAGS_NOCACHE; - _cmsPipelineSetOptimizationParameters(Dest, FastEvaluateCurves16, c16, CurvesFree, CurvesDup); - } - } - else { - - // LUT optimizes to nothing. Set the identity LUT - cmsStageFree(ObtainedCurves); - - if (!cmsPipelineInsertStage(Dest, cmsAT_BEGIN, cmsStageAllocIdentity(Dest ->ContextID, Src ->InputChannels))) - goto Error; - - *dwFlags |= cmsFLAGS_NOCACHE; - _cmsPipelineSetOptimizationParameters(Dest, FastIdentity16, (void*) Dest, NULL, NULL); - } - - // We are done. - cmsPipelineFree(Src); - *Lut = Dest; - return TRUE; - -Error: - - if (ObtainedCurves != NULL) cmsStageFree(ObtainedCurves); - if (GammaTables != NULL) { - for (i=0; i < Src ->InputChannels; i++) { - if (GammaTables[i] != NULL) cmsFreeToneCurve(GammaTables[i]); - } - - _cmsFree(Src ->ContextID, GammaTables); - } - - if (Dest != NULL) cmsPipelineFree(Dest); - return FALSE; - - cmsUNUSED_PARAMETER(Intent); - cmsUNUSED_PARAMETER(InputFormat); - cmsUNUSED_PARAMETER(OutputFormat); - cmsUNUSED_PARAMETER(dwFlags); -} - -// ------------------------------------------------------------------------------------------------------------------------------------- -// LUT is Shaper - Matrix - Matrix - Shaper, which is very frequent when combining two matrix-shaper profiles - - -static -void FreeMatShaper(cmsContext ContextID, void* Data) -{ - if (Data != NULL) _cmsFree(ContextID, Data); -} - -static -void* DupMatShaper(cmsContext ContextID, const void* Data) -{ - return _cmsDupMem(ContextID, Data, sizeof(MatShaper8Data)); -} - - -// A fast matrix-shaper evaluator for 8 bits. This is a bit ticky 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 -void MatShaperEval16(register const cmsUInt16Number In[], - register cmsUInt16Number Out[], - register const void* D) -{ - MatShaper8Data* p = (MatShaper8Data*) D; - cmsS1Fixed14Number l1, l2, l3, r, g, b; - cmsUInt32Number ri, gi, bi; - - // In this case (and only in this case!) we can use this simplification since - // In[] is assured to come from a 8 bit number. (a << 8 | a) - ri = In[0] & 0xFF; - gi = In[1] & 0xFF; - bi = In[2] & 0xFF; - - // Across first shaper, which also converts to 1.14 fixed point - r = p->Shaper1R[ri]; - g = p->Shaper1G[gi]; - b = p->Shaper1B[bi]; - - // Evaluate the matrix in 1.14 fixed point - l1 = (p->Mat[0][0] * r + p->Mat[0][1] * g + p->Mat[0][2] * b + p->Off[0] + 0x2000) >> 14; - l2 = (p->Mat[1][0] * r + p->Mat[1][1] * g + p->Mat[1][2] * b + p->Off[1] + 0x2000) >> 14; - l3 = (p->Mat[2][0] * r + p->Mat[2][1] * g + p->Mat[2][2] * b + p->Off[2] + 0x2000) >> 14; - - // Now we have to clip to 0..1.0 range - ri = (l1 < 0) ? 0 : ((l1 > 16384) ? 16384 : l1); - gi = (l2 < 0) ? 0 : ((l2 > 16384) ? 16384 : l2); - bi = (l3 < 0) ? 0 : ((l3 > 16384) ? 16384 : l3); - - // And across second shaper, - Out[0] = p->Shaper2R[ri]; - Out[1] = p->Shaper2G[gi]; - Out[2] = p->Shaper2B[bi]; - -} - -// This table converts from 8 bits to 1.14 after applying the curve -static -cmsBool FillFirstShaper(cmsS1Fixed14Number* Table, cmsToneCurve* Curve) -{ - int i; - cmsFloat32Number R, y; - - for (i=0; i < 256; i++) { - - R = (cmsFloat32Number) (i / 255.0); - y = cmsEvalToneCurveFloat(Curve, R); - if (isinf(y)) - return FALSE; - - Table[i] = DOUBLE_TO_1FIXED14(y); - } - return TRUE; -} - -// This table converts form 1.14 (being 0x4000 the last entry) to 8 bits after applying the curve -static -cmsBool FillSecondShaper(cmsUInt16Number* Table, cmsToneCurve* Curve, cmsBool Is8BitsOutput) -{ - int i; - cmsFloat32Number R, Val; - - for (i=0; i < 16385; i++) { - - R = (cmsFloat32Number) (i / 16384.0); - Val = cmsEvalToneCurveFloat(Curve, R); // Val comes 0..1.0 - if (isinf(Val)) - return FALSE; - - if (Is8BitsOutput) { - - // If 8 bits output, we can optimize further by computing the / 257 part. - // first we compute the resulting byte and then we store the byte times - // 257. This quantization allows to round very quick by doing a >> 8, but - // since the low byte is always equal to msb, we can do a & 0xff and this works! - cmsUInt16Number w = _cmsQuickSaturateWord(Val * 65535.0); - cmsUInt8Number b = FROM_16_TO_8(w); - - Table[i] = FROM_8_TO_16(b); - } - else Table[i] = _cmsQuickSaturateWord(Val * 65535.0); - } - return TRUE; -} - -// Compute the matrix-shaper structure -static -cmsBool SetMatShaper(cmsPipeline* Dest, cmsToneCurve* Curve1[3], cmsMAT3* Mat, cmsVEC3* Off, cmsToneCurve* Curve2[3], cmsUInt32Number* OutputFormat) -{ - MatShaper8Data* p; - int i, j; - cmsBool Is8Bits = _cmsFormatterIs8bit(*OutputFormat); - - // Allocate a big chuck of memory to store precomputed tables - p = (MatShaper8Data*) _cmsMalloc(Dest ->ContextID, sizeof(MatShaper8Data)); - if (p == NULL) return FALSE; - - p -> ContextID = Dest -> ContextID; - - // Precompute tables - if (!FillFirstShaper(p ->Shaper1R, Curve1[0])) - goto Error; - if (!FillFirstShaper(p ->Shaper1G, Curve1[1])) - goto Error; - if (!FillFirstShaper(p ->Shaper1B, Curve1[2])) - goto Error; - - if (!FillSecondShaper(p ->Shaper2R, Curve2[0], Is8Bits)) - goto Error; - if (!FillSecondShaper(p ->Shaper2G, Curve2[1], Is8Bits)) - goto Error; - if (!FillSecondShaper(p ->Shaper2B, Curve2[2], Is8Bits)) - goto Error; - - // Convert matrix to nFixed14. Note that those values may take more than 16 bits as - for (i=0; i < 3; i++) { - for (j=0; j < 3; j++) { - p ->Mat[i][j] = DOUBLE_TO_1FIXED14(Mat->v[i].n[j]); - } - } - - for (i=0; i < 3; i++) { - - if (Off == NULL) { - p ->Off[i] = 0; - } - else { - p ->Off[i] = DOUBLE_TO_1FIXED14(Off->n[i]); - } - } - - // Mark as optimized for faster formatter - if (Is8Bits) - *OutputFormat |= OPTIMIZED_SH(1); - - // Fill function pointers - _cmsPipelineSetOptimizationParameters(Dest, MatShaperEval16, (void*) p, FreeMatShaper, DupMatShaper); - return TRUE; -Error: - _cmsFree(Dest->ContextID, p); - return FALSE; -} - -// 8 bits on input allows matrix-shaper boot up to 25 Mpixels per second on RGB. That's fast! -// TODO: Allow a third matrix for abs. colorimetric -static -cmsBool OptimizeMatrixShaper(cmsPipeline** Lut, cmsUInt32Number Intent, cmsUInt32Number* InputFormat, cmsUInt32Number* OutputFormat, cmsUInt32Number* dwFlags) -{ - cmsStage* Curve1, *Curve2; - cmsStage* Matrix1, *Matrix2; - _cmsStageMatrixData* Data1; - _cmsStageMatrixData* Data2; - cmsMAT3 res; - cmsBool IdentityMat; - cmsPipeline* Dest, *Src; - - // Only works on RGB to RGB - if (T_CHANNELS(*InputFormat) != 3 || T_CHANNELS(*OutputFormat) != 3) return FALSE; - - // Only works on 8 bit input - if (!_cmsFormatterIs8bit(*InputFormat)) return FALSE; - - // Seems suitable, proceed - Src = *Lut; - - // Check for shaper-matrix-matrix-shaper structure, that is what this optimizer stands for - if (!cmsPipelineCheckAndRetreiveStages(Src, 4, - cmsSigCurveSetElemType, cmsSigMatrixElemType, cmsSigMatrixElemType, cmsSigCurveSetElemType, - &Curve1, &Matrix1, &Matrix2, &Curve2)) return FALSE; - - // Get both matrices - Data1 = (_cmsStageMatrixData*) cmsStageData(Matrix1); - Data2 = (_cmsStageMatrixData*) cmsStageData(Matrix2); - - // Input offset should be zero - if (Data1 ->Offset != NULL) return FALSE; - - // Multiply both matrices to get the result - _cmsMAT3per(&res, (cmsMAT3*) Data2 ->Double, (cmsMAT3*) Data1 ->Double); - - // Now the result is in res + Data2 -> Offset. Maybe is a plain identity? - IdentityMat = FALSE; - if (_cmsMAT3isIdentity(&res) && Data2 ->Offset == NULL) { - - // We can get rid of full matrix - IdentityMat = TRUE; - } - - // Allocate an empty LUT - Dest = cmsPipelineAlloc(Src ->ContextID, Src ->InputChannels, Src ->OutputChannels); - if (!Dest) return FALSE; - - // Assamble the new LUT - if (!cmsPipelineInsertStage(Dest, cmsAT_BEGIN, cmsStageDup(Curve1))) - goto Error; - - if (!IdentityMat) - if (!cmsPipelineInsertStage(Dest, cmsAT_END, cmsStageAllocMatrix(Dest ->ContextID, 3, 3, (const cmsFloat64Number*) &res, Data2 ->Offset))) - goto Error; - if (!cmsPipelineInsertStage(Dest, cmsAT_END, cmsStageDup(Curve2))) - goto Error; - - // If identity on matrix, we can further optimize the curves, so call the join curves routine - if (IdentityMat) { - - OptimizeByJoiningCurves(&Dest, Intent, InputFormat, OutputFormat, dwFlags); - } - else { - _cmsStageToneCurvesData* mpeC1 = (_cmsStageToneCurvesData*) cmsStageData(Curve1); - _cmsStageToneCurvesData* mpeC2 = (_cmsStageToneCurvesData*) cmsStageData(Curve2); - - // In this particular optimization, cach?does not help as it takes more time to deal with - // the cach?that with the pixel handling - *dwFlags |= cmsFLAGS_NOCACHE; - - // Setup the optimizarion routines - if (!SetMatShaper(Dest, mpeC1 ->TheCurves, &res, (cmsVEC3*) Data2 ->Offset, mpeC2->TheCurves, OutputFormat)) - goto Error; - } - - cmsPipelineFree(Src); - *Lut = Dest; - return TRUE; -Error: - // Leave Src unchanged - cmsPipelineFree(Dest); - return FALSE; -} - - -// ------------------------------------------------------------------------------------------------------------------------------------- -// Optimization plug-ins - -// List of optimizations -typedef struct _cmsOptimizationCollection_st { - - _cmsOPToptimizeFn OptimizePtr; - - struct _cmsOptimizationCollection_st *Next; - -} _cmsOptimizationCollection; - - -// The built-in list. We currently implement 4 types of optimizations. Joining of curves, matrix-shaper, linearization and resampling -static _cmsOptimizationCollection DefaultOptimization[] = { - - { OptimizeByJoiningCurves, &DefaultOptimization[1] }, - { OptimizeMatrixShaper, &DefaultOptimization[2] }, - { OptimizeByComputingLinearization, &DefaultOptimization[3] }, - { OptimizeByResampling, NULL } -}; - -// The linked list head -_cmsOptimizationPluginChunkType _cmsOptimizationPluginChunk = { NULL }; - - -// Duplicates the zone of memory used by the plug-in in the new context -static -void DupPluginOptimizationList(struct _cmsContext_struct* ctx, - const struct _cmsContext_struct* src) -{ - _cmsOptimizationPluginChunkType newHead = { NULL }; - _cmsOptimizationCollection* entry; - _cmsOptimizationCollection* Anterior = NULL; - _cmsOptimizationPluginChunkType* head = (_cmsOptimizationPluginChunkType*) src->chunks[OptimizationPlugin]; - - _cmsAssert(ctx != NULL); - _cmsAssert(head != NULL); - - // Walk the list copying all nodes - for (entry = head->OptimizationCollection; - entry != NULL; - entry = entry ->Next) { - - _cmsOptimizationCollection *newEntry = ( _cmsOptimizationCollection *) _cmsSubAllocDup(ctx ->MemPool, entry, sizeof(_cmsOptimizationCollection)); - - 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.OptimizationCollection == NULL) - newHead.OptimizationCollection = newEntry; - } - - ctx ->chunks[OptimizationPlugin] = _cmsSubAllocDup(ctx->MemPool, &newHead, sizeof(_cmsOptimizationPluginChunkType)); -} - -void _cmsAllocOptimizationPluginChunk(struct _cmsContext_struct* ctx, - const struct _cmsContext_struct* src) -{ - if (src != NULL) { - - // Copy all linked list - DupPluginOptimizationList(ctx, src); - } - else { - static _cmsOptimizationPluginChunkType OptimizationPluginChunkType = { NULL }; - ctx ->chunks[OptimizationPlugin] = _cmsSubAllocDup(ctx ->MemPool, &OptimizationPluginChunkType, sizeof(_cmsOptimizationPluginChunkType)); - } -} - - -// Register new ways to optimize -cmsBool _cmsRegisterOptimizationPlugin(cmsContext ContextID, cmsPluginBase* Data) -{ - cmsPluginOptimization* Plugin = (cmsPluginOptimization*) Data; - _cmsOptimizationPluginChunkType* ctx = ( _cmsOptimizationPluginChunkType*) _cmsContextGetClientChunk(ContextID, OptimizationPlugin); - _cmsOptimizationCollection* fl; - - if (Data == NULL) { - - ctx->OptimizationCollection = NULL; - return TRUE; - } - - // Optimizer callback is required - if (Plugin ->OptimizePtr == NULL) return FALSE; - - fl = (_cmsOptimizationCollection*) _cmsPluginMalloc(ContextID, sizeof(_cmsOptimizationCollection)); - if (fl == NULL) return FALSE; - - // Copy the parameters - fl ->OptimizePtr = Plugin ->OptimizePtr; - - // Keep linked list - fl ->Next = ctx->OptimizationCollection; - - // Set the head - ctx ->OptimizationCollection = fl; - - // All is ok - return TRUE; -} - -// The entry point for LUT optimization -cmsBool _cmsOptimizePipeline(cmsContext ContextID, - cmsPipeline** PtrLut, - int Intent, - cmsUInt32Number* InputFormat, - cmsUInt32Number* OutputFormat, - cmsUInt32Number* dwFlags) -{ - _cmsOptimizationPluginChunkType* ctx = ( _cmsOptimizationPluginChunkType*) _cmsContextGetClientChunk(ContextID, OptimizationPlugin); - _cmsOptimizationCollection* Opts; - cmsBool AnySuccess = FALSE; - - // A CLUT is being asked, so force this specific optimization - if (*dwFlags & cmsFLAGS_FORCE_CLUT) { - - PreOptimize(*PtrLut); - return OptimizeByResampling(PtrLut, Intent, InputFormat, OutputFormat, dwFlags); - } - - // Anything to optimize? - if ((*PtrLut) ->Elements == NULL) { - _cmsPipelineSetOptimizationParameters(*PtrLut, FastIdentity16, (void*) *PtrLut, NULL, NULL); - return TRUE; - } - - // Try to get rid of identities and trivial conversions. - AnySuccess = PreOptimize(*PtrLut); - - // After removal do we end with an identity? - if ((*PtrLut) ->Elements == NULL) { - _cmsPipelineSetOptimizationParameters(*PtrLut, FastIdentity16, (void*) *PtrLut, NULL, NULL); - return TRUE; - } - - // Do not optimize, keep all precision - if (*dwFlags & cmsFLAGS_NOOPTIMIZE) - return FALSE; - - // Try plug-in optimizations - for (Opts = ctx->OptimizationCollection; - Opts != NULL; - Opts = Opts ->Next) { - - // If one schema succeeded, we are done - if (Opts ->OptimizePtr(PtrLut, Intent, InputFormat, OutputFormat, dwFlags)) { - - return TRUE; // Optimized! - } - } - - // Try built-in optimizations - for (Opts = DefaultOptimization; - Opts != NULL; - Opts = Opts ->Next) { - - if (Opts ->OptimizePtr(PtrLut, Intent, InputFormat, OutputFormat, dwFlags)) { - - return TRUE; - } - } - - // Only simple optimizations succeeded - return AnySuccess; -} |