diff options
Diffstat (limited to 'third_party/lcms2-2.6/src/cmsps2.c')
| -rw-r--r-- | third_party/lcms2-2.6/src/cmsps2.c | 1597 |
1 files changed, 0 insertions, 1597 deletions
diff --git a/third_party/lcms2-2.6/src/cmsps2.c b/third_party/lcms2-2.6/src/cmsps2.c deleted file mode 100644 index 224b44b542..0000000000 --- a/third_party/lcms2-2.6/src/cmsps2.c +++ /dev/null @@ -1,1597 +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" - -// PostScript ColorRenderingDictionary and ColorSpaceArray - - -#define MAXPSCOLS 60 // Columns on tables - -/* - Implementation - -------------- - - PostScript does use XYZ as its internal PCS. But since PostScript - interpolation tables are limited to 8 bits, I use Lab as a way to - improve the accuracy, favoring perceptual results. So, for the creation - of each CRD, CSA the profiles are converted to Lab via a device - link between profile -> Lab or Lab -> profile. The PS code necessary to - convert Lab <-> XYZ is also included. - - - - Color Space Arrays (CSA) - ================================================================================== - - In order to obtain precision, code chooses between three ways to implement - the device -> XYZ transform. These cases identifies monochrome profiles (often - implemented as a set of curves), matrix-shaper and Pipeline-based. - - Monochrome - ----------- - - This is implemented as /CIEBasedA CSA. The prelinearization curve is - placed into /DecodeA section, and matrix equals to D50. Since here is - no interpolation tables, I do the conversion directly to XYZ - - NOTE: CLUT-based monochrome profiles are NOT supported. So, cmsFLAGS_MATRIXINPUT - flag is forced on such profiles. - - [ /CIEBasedA - << - /DecodeA { transfer function } bind - /MatrixA [D50] - /RangeLMN [ 0.0 cmsD50X 0.0 cmsD50Y 0.0 cmsD50Z ] - /WhitePoint [D50] - /BlackPoint [BP] - /RenderingIntent (intent) - >> - ] - - On simpler profiles, the PCS is already XYZ, so no conversion is required. - - - Matrix-shaper based - ------------------- - - This is implemented both with /CIEBasedABC or /CIEBasedDEF on dependig - of profile implementation. Since here there are no interpolation tables, I do - the conversion directly to XYZ - - - - [ /CIEBasedABC - << - /DecodeABC [ {transfer1} {transfer2} {transfer3} ] - /MatrixABC [Matrix] - /RangeLMN [ 0.0 cmsD50X 0.0 cmsD50Y 0.0 cmsD50Z ] - /DecodeLMN [ { / 2} dup dup ] - /WhitePoint [D50] - /BlackPoint [BP] - /RenderingIntent (intent) - >> - ] - - - CLUT based - ---------- - - Lab is used in such cases. - - [ /CIEBasedDEF - << - /DecodeDEF [ <prelinearization> ] - /Table [ p p p [<...>]] - /RangeABC [ 0 1 0 1 0 1] - /DecodeABC[ <postlinearization> ] - /RangeLMN [ -0.236 1.254 0 1 -0.635 1.640 ] - % -128/500 1+127/500 0 1 -127/200 1+128/200 - /MatrixABC [ 1 1 1 1 0 0 0 0 -1] - /WhitePoint [D50] - /BlackPoint [BP] - /RenderingIntent (intent) - ] - - - Color Rendering Dictionaries (CRD) - ================================== - These are always implemented as CLUT, and always are using Lab. Since CRD are expected to - be used as resources, the code adds the definition as well. - - << - /ColorRenderingType 1 - /WhitePoint [ D50 ] - /BlackPoint [BP] - /MatrixPQR [ Bradford ] - /RangePQR [-0.125 1.375 -0.125 1.375 -0.125 1.375 ] - /TransformPQR [ - {4 index 3 get div 2 index 3 get mul exch pop exch pop exch pop exch pop } bind - {4 index 4 get div 2 index 4 get mul exch pop exch pop exch pop exch pop } bind - {4 index 5 get div 2 index 5 get mul exch pop exch pop exch pop exch pop } bind - ] - /MatrixABC <...> - /EncodeABC <...> - /RangeABC <.. used for XYZ -> Lab> - /EncodeLMN - /RenderTable [ p p p [<...>]] - - /RenderingIntent (Perceptual) - >> - /Current exch /ColorRendering defineresource pop - - - The following stages are used to convert from XYZ to Lab - -------------------------------------------------------- - - Input is given at LMN stage on X, Y, Z - - Encode LMN gives us f(X/Xn), f(Y/Yn), f(Z/Zn) - - /EncodeLMN [ - - { 0.964200 div dup 0.008856 le {7.787 mul 16 116 div add}{1 3 div exp} ifelse } bind - { 1.000000 div dup 0.008856 le {7.787 mul 16 116 div add}{1 3 div exp} ifelse } bind - { 0.824900 div dup 0.008856 le {7.787 mul 16 116 div add}{1 3 div exp} ifelse } bind - - ] - - - MatrixABC is used to compute f(Y/Yn), f(X/Xn) - f(Y/Yn), f(Y/Yn) - f(Z/Zn) - - | 0 1 0| - | 1 -1 0| - | 0 1 -1| - - /MatrixABC [ 0 1 0 1 -1 1 0 0 -1 ] - - EncodeABC finally gives Lab values. - - /EncodeABC [ - { 116 mul 16 sub 100 div } bind - { 500 mul 128 add 255 div } bind - { 200 mul 128 add 255 div } bind - ] - - The following stages are used to convert Lab to XYZ - ---------------------------------------------------- - - /RangeABC [ 0 1 0 1 0 1] - /DecodeABC [ { 100 mul 16 add 116 div } bind - { 255 mul 128 sub 500 div } bind - { 255 mul 128 sub 200 div } bind - ] - - /MatrixABC [ 1 1 1 1 0 0 0 0 -1] - /DecodeLMN [ - {dup 6 29 div ge {dup dup mul mul} {4 29 div sub 108 841 div mul} ifelse 0.964200 mul} bind - {dup 6 29 div ge {dup dup mul mul} {4 29 div sub 108 841 div mul} ifelse } bind - {dup 6 29 div ge {dup dup mul mul} {4 29 div sub 108 841 div mul} ifelse 0.824900 mul} bind - ] - - -*/ - -/* - - PostScript algorithms discussion. - ========================================================================================================= - - 1D interpolation algorithm - - - 1D interpolation (float) - ------------------------ - - val2 = Domain * Value; - - cell0 = (int) floor(val2); - cell1 = (int) ceil(val2); - - rest = val2 - cell0; - - y0 = LutTable[cell0] ; - y1 = LutTable[cell1] ; - - y = y0 + (y1 - y0) * rest; - - - - PostScript code Stack - ================================================ - - { % v - <check 0..1.0> - [array] % v tab - dup % v tab tab - length 1 sub % v tab dom - - 3 -1 roll % tab dom v - - mul % tab val2 - dup % tab val2 val2 - dup % tab val2 val2 val2 - floor cvi % tab val2 val2 cell0 - exch % tab val2 cell0 val2 - ceiling cvi % tab val2 cell0 cell1 - - 3 index % tab val2 cell0 cell1 tab - exch % tab val2 cell0 tab cell1 - get % tab val2 cell0 y1 - - 4 -1 roll % val2 cell0 y1 tab - 3 -1 roll % val2 y1 tab cell0 - get % val2 y1 y0 - - dup % val2 y1 y0 y0 - 3 1 roll % val2 y0 y1 y0 - - sub % val2 y0 (y1-y0) - 3 -1 roll % y0 (y1-y0) val2 - dup % y0 (y1-y0) val2 val2 - floor cvi % y0 (y1-y0) val2 floor(val2) - sub % y0 (y1-y0) rest - mul % y0 t1 - add % y - 65535 div % result - - } bind - - -*/ - - -// This struct holds the memory block currently being write -typedef struct { - _cmsStageCLutData* Pipeline; - cmsIOHANDLER* m; - - int FirstComponent; - int SecondComponent; - - const char* PreMaj; - const char* PostMaj; - const char* PreMin; - const char* PostMin; - - int FixWhite; // Force mapping of pure white - - cmsColorSpaceSignature ColorSpace; // ColorSpace of profile - - -} cmsPsSamplerCargo; - -static int _cmsPSActualColumn = 0; - - -// Convert to byte -static -cmsUInt8Number Word2Byte(cmsUInt16Number w) -{ - return (cmsUInt8Number) floor((cmsFloat64Number) w / 257.0 + 0.5); -} - - -// Convert to byte (using ICC2 notation) -/* -static -cmsUInt8Number L2Byte(cmsUInt16Number w) -{ - int ww = w + 0x0080; - - if (ww > 0xFFFF) return 0xFF; - - return (cmsUInt8Number) ((cmsUInt16Number) (ww >> 8) & 0xFF); -} -*/ - -// Write a cooked byte - -static -void WriteByte(cmsIOHANDLER* m, cmsUInt8Number b) -{ - _cmsIOPrintf(m, "%02x", b); - _cmsPSActualColumn += 2; - - if (_cmsPSActualColumn > MAXPSCOLS) { - - _cmsIOPrintf(m, "\n"); - _cmsPSActualColumn = 0; - } -} - -// ----------------------------------------------------------------- PostScript generation - - -// Removes offending Carriage returns -static -char* RemoveCR(const char* txt) -{ - static char Buffer[2048]; - char* pt; - - strncpy(Buffer, txt, 2047); - Buffer[2047] = 0; - for (pt = Buffer; *pt; pt++) - if (*pt == '\n' || *pt == '\r') *pt = ' '; - - return Buffer; - -} - -static -void EmitHeader(cmsIOHANDLER* m, const char* Title, cmsHPROFILE hProfile) -{ - time_t timer; - cmsMLU *Description, *Copyright; - char DescASCII[256], CopyrightASCII[256]; - - time(&timer); - - Description = (cmsMLU*) cmsReadTag(hProfile, cmsSigProfileDescriptionTag); - Copyright = (cmsMLU*) cmsReadTag(hProfile, cmsSigCopyrightTag); - - DescASCII[0] = DescASCII[255] = 0; - CopyrightASCII[0] = CopyrightASCII[255] = 0; - - if (Description != NULL) cmsMLUgetASCII(Description, cmsNoLanguage, cmsNoCountry, DescASCII, 255); - if (Copyright != NULL) cmsMLUgetASCII(Copyright, cmsNoLanguage, cmsNoCountry, CopyrightASCII, 255); - - _cmsIOPrintf(m, "%%!PS-Adobe-3.0\n"); - _cmsIOPrintf(m, "%%\n"); - _cmsIOPrintf(m, "%% %s\n", Title); - _cmsIOPrintf(m, "%% Source: %s\n", RemoveCR(DescASCII)); - _cmsIOPrintf(m, "%% %s\n", RemoveCR(CopyrightASCII)); - _cmsIOPrintf(m, "%% Created: %s", ctime(&timer)); // ctime appends a \n!!! - _cmsIOPrintf(m, "%%\n"); - _cmsIOPrintf(m, "%%%%BeginResource\n"); - -} - - -// Emits White & Black point. White point is always D50, Black point is the device -// Black point adapted to D50. - -static -void EmitWhiteBlackD50(cmsIOHANDLER* m, cmsCIEXYZ* BlackPoint) -{ - - _cmsIOPrintf(m, "/BlackPoint [%f %f %f]\n", BlackPoint -> X, - BlackPoint -> Y, - BlackPoint -> Z); - - _cmsIOPrintf(m, "/WhitePoint [%f %f %f]\n", cmsD50_XYZ()->X, - cmsD50_XYZ()->Y, - cmsD50_XYZ()->Z); -} - - -static -void EmitRangeCheck(cmsIOHANDLER* m) -{ - _cmsIOPrintf(m, "dup 0.0 lt { pop 0.0 } if " - "dup 1.0 gt { pop 1.0 } if "); - -} - -// Does write the intent - -static -void EmitIntent(cmsIOHANDLER* m, int RenderingIntent) -{ - const char *intent; - - switch (RenderingIntent) { - - case INTENT_PERCEPTUAL: intent = "Perceptual"; break; - case INTENT_RELATIVE_COLORIMETRIC: intent = "RelativeColorimetric"; break; - case INTENT_ABSOLUTE_COLORIMETRIC: intent = "AbsoluteColorimetric"; break; - case INTENT_SATURATION: intent = "Saturation"; break; - - default: intent = "Undefined"; break; - } - - _cmsIOPrintf(m, "/RenderingIntent (%s)\n", intent ); -} - -// -// Convert L* to Y -// -// Y = Yn*[ (L* + 16) / 116] ^ 3 if (L*) >= 6 / 29 -// = Yn*( L* / 116) / 7.787 if (L*) < 6 / 29 -// - -/* -static -void EmitL2Y(cmsIOHANDLER* m) -{ - _cmsIOPrintf(m, - "{ " - "100 mul 16 add 116 div " // (L * 100 + 16) / 116 - "dup 6 29 div ge " // >= 6 / 29 ? - "{ dup dup mul mul } " // yes, ^3 and done - "{ 4 29 div sub 108 841 div mul } " // no, slope limiting - "ifelse } bind "); -} -*/ - - -// Lab -> XYZ, see the discussion above - -static -void EmitLab2XYZ(cmsIOHANDLER* m) -{ - _cmsIOPrintf(m, "/RangeABC [ 0 1 0 1 0 1]\n"); - _cmsIOPrintf(m, "/DecodeABC [\n"); - _cmsIOPrintf(m, "{100 mul 16 add 116 div } bind\n"); - _cmsIOPrintf(m, "{255 mul 128 sub 500 div } bind\n"); - _cmsIOPrintf(m, "{255 mul 128 sub 200 div } bind\n"); - _cmsIOPrintf(m, "]\n"); - _cmsIOPrintf(m, "/MatrixABC [ 1 1 1 1 0 0 0 0 -1]\n"); - _cmsIOPrintf(m, "/RangeLMN [ -0.236 1.254 0 1 -0.635 1.640 ]\n"); - _cmsIOPrintf(m, "/DecodeLMN [\n"); - _cmsIOPrintf(m, "{dup 6 29 div ge {dup dup mul mul} {4 29 div sub 108 841 div mul} ifelse 0.964200 mul} bind\n"); - _cmsIOPrintf(m, "{dup 6 29 div ge {dup dup mul mul} {4 29 div sub 108 841 div mul} ifelse } bind\n"); - _cmsIOPrintf(m, "{dup 6 29 div ge {dup dup mul mul} {4 29 div sub 108 841 div mul} ifelse 0.824900 mul} bind\n"); - _cmsIOPrintf(m, "]\n"); -} - - - -// Outputs a table of words. It does use 16 bits - -static -void Emit1Gamma(cmsIOHANDLER* m, cmsToneCurve* Table) -{ - cmsUInt32Number i; - cmsFloat64Number gamma; - - if (Table == NULL) return; // Error - - if (Table ->nEntries <= 0) return; // Empty table - - // Suppress whole if identity - if (cmsIsToneCurveLinear(Table)) return; - - // Check if is really an exponential. If so, emit "exp" - gamma = cmsEstimateGamma(Table, 0.001); - if (gamma > 0) { - _cmsIOPrintf(m, "{ %g exp } bind ", gamma); - return; - } - - _cmsIOPrintf(m, "{ "); - - // Bounds check - EmitRangeCheck(m); - - // Emit intepolation code - - // PostScript code Stack - // =============== ======================== - // v - _cmsIOPrintf(m, " ["); - - for (i=0; i < Table->nEntries; i++) { - _cmsIOPrintf(m, "%d ", Table->Table16[i]); - } - - _cmsIOPrintf(m, "] "); // v tab - - _cmsIOPrintf(m, "dup "); // v tab tab - _cmsIOPrintf(m, "length 1 sub "); // v tab dom - _cmsIOPrintf(m, "3 -1 roll "); // tab dom v - _cmsIOPrintf(m, "mul "); // tab val2 - _cmsIOPrintf(m, "dup "); // tab val2 val2 - _cmsIOPrintf(m, "dup "); // tab val2 val2 val2 - _cmsIOPrintf(m, "floor cvi "); // tab val2 val2 cell0 - _cmsIOPrintf(m, "exch "); // tab val2 cell0 val2 - _cmsIOPrintf(m, "ceiling cvi "); // tab val2 cell0 cell1 - _cmsIOPrintf(m, "3 index "); // tab val2 cell0 cell1 tab - _cmsIOPrintf(m, "exch "); // tab val2 cell0 tab cell1 - _cmsIOPrintf(m, "get "); // tab val2 cell0 y1 - _cmsIOPrintf(m, "4 -1 roll "); // val2 cell0 y1 tab - _cmsIOPrintf(m, "3 -1 roll "); // val2 y1 tab cell0 - _cmsIOPrintf(m, "get "); // val2 y1 y0 - _cmsIOPrintf(m, "dup "); // val2 y1 y0 y0 - _cmsIOPrintf(m, "3 1 roll "); // val2 y0 y1 y0 - _cmsIOPrintf(m, "sub "); // val2 y0 (y1-y0) - _cmsIOPrintf(m, "3 -1 roll "); // y0 (y1-y0) val2 - _cmsIOPrintf(m, "dup "); // y0 (y1-y0) val2 val2 - _cmsIOPrintf(m, "floor cvi "); // y0 (y1-y0) val2 floor(val2) - _cmsIOPrintf(m, "sub "); // y0 (y1-y0) rest - _cmsIOPrintf(m, "mul "); // y0 t1 - _cmsIOPrintf(m, "add "); // y - _cmsIOPrintf(m, "65535 div "); // result - - _cmsIOPrintf(m, " } bind "); -} - - -// Compare gamma table - -static -cmsBool GammaTableEquals(cmsUInt16Number* g1, cmsUInt16Number* g2, int nEntries) -{ - return memcmp(g1, g2, nEntries* sizeof(cmsUInt16Number)) == 0; -} - - -// Does write a set of gamma curves - -static -void EmitNGamma(cmsIOHANDLER* m, int n, cmsToneCurve* g[]) -{ - int i; - - for( i=0; i < n; i++ ) - { - if (g[i] == NULL) return; // Error - - if (i > 0 && GammaTableEquals(g[i-1]->Table16, g[i]->Table16, g[i]->nEntries)) { - - _cmsIOPrintf(m, "dup "); - } - else { - Emit1Gamma(m, g[i]); - } - } - -} - - - - - -// Following code dumps a LUT onto memory stream - - -// This is the sampler. Intended to work in SAMPLER_INSPECT mode, -// that is, the callback will be called for each knot with -// -// In[] The grid location coordinates, normalized to 0..ffff -// Out[] The Pipeline values, normalized to 0..ffff -// -// Returning a value other than 0 does terminate the sampling process -// -// Each row contains Pipeline values for all but first component. So, I -// detect row changing by keeping a copy of last value of first -// component. -1 is used to mark begining of whole block. - -static -int OutputValueSampler(register const cmsUInt16Number In[], register cmsUInt16Number Out[], register void* Cargo) -{ - cmsPsSamplerCargo* sc = (cmsPsSamplerCargo*) Cargo; - cmsUInt32Number i; - - - if (sc -> FixWhite) { - - if (In[0] == 0xFFFF) { // Only in L* = 100, ab = [-8..8] - - if ((In[1] >= 0x7800 && In[1] <= 0x8800) && - (In[2] >= 0x7800 && In[2] <= 0x8800)) { - - cmsUInt16Number* Black; - cmsUInt16Number* White; - cmsUInt32Number nOutputs; - - if (!_cmsEndPointsBySpace(sc ->ColorSpace, &White, &Black, &nOutputs)) - return 0; - - for (i=0; i < nOutputs; i++) - Out[i] = White[i]; - } - - - } - } - - - // Hadle the parenthesis on rows - - if (In[0] != sc ->FirstComponent) { - - if (sc ->FirstComponent != -1) { - - _cmsIOPrintf(sc ->m, sc ->PostMin); - sc ->SecondComponent = -1; - _cmsIOPrintf(sc ->m, sc ->PostMaj); - } - - // Begin block - _cmsPSActualColumn = 0; - - _cmsIOPrintf(sc ->m, sc ->PreMaj); - sc ->FirstComponent = In[0]; - } - - - if (In[1] != sc ->SecondComponent) { - - if (sc ->SecondComponent != -1) { - - _cmsIOPrintf(sc ->m, sc ->PostMin); - } - - _cmsIOPrintf(sc ->m, sc ->PreMin); - sc ->SecondComponent = In[1]; - } - - // Dump table. - - for (i=0; i < sc -> Pipeline ->Params->nOutputs; i++) { - - cmsUInt16Number wWordOut = Out[i]; - cmsUInt8Number wByteOut; // Value as byte - - - // We always deal with Lab4 - - wByteOut = Word2Byte(wWordOut); - WriteByte(sc -> m, wByteOut); - } - - return 1; -} - -// Writes a Pipeline on memstream. Could be 8 or 16 bits based - -static -void WriteCLUT(cmsIOHANDLER* m, cmsStage* mpe, const char* PreMaj, - const char* PostMaj, - const char* PreMin, - const char* PostMin, - int FixWhite, - cmsColorSpaceSignature ColorSpace) -{ - cmsUInt32Number i; - cmsPsSamplerCargo sc; - - sc.FirstComponent = -1; - sc.SecondComponent = -1; - sc.Pipeline = (_cmsStageCLutData *) mpe ->Data; - sc.m = m; - sc.PreMaj = PreMaj; - sc.PostMaj= PostMaj; - - sc.PreMin = PreMin; - sc.PostMin = PostMin; - sc.FixWhite = FixWhite; - sc.ColorSpace = ColorSpace; - - _cmsIOPrintf(m, "["); - - for (i=0; i < sc.Pipeline->Params->nInputs; i++) - _cmsIOPrintf(m, " %d ", sc.Pipeline->Params->nSamples[i]); - - _cmsIOPrintf(m, " [\n"); - - cmsStageSampleCLut16bit(mpe, OutputValueSampler, (void*) &sc, SAMPLER_INSPECT); - - _cmsIOPrintf(m, PostMin); - _cmsIOPrintf(m, PostMaj); - _cmsIOPrintf(m, "] "); - -} - - -// Dumps CIEBasedA Color Space Array - -static -int EmitCIEBasedA(cmsIOHANDLER* m, cmsToneCurve* Curve, cmsCIEXYZ* BlackPoint) -{ - - _cmsIOPrintf(m, "[ /CIEBasedA\n"); - _cmsIOPrintf(m, " <<\n"); - - _cmsIOPrintf(m, "/DecodeA "); - - Emit1Gamma(m, Curve); - - _cmsIOPrintf(m, " \n"); - - _cmsIOPrintf(m, "/MatrixA [ 0.9642 1.0000 0.8249 ]\n"); - _cmsIOPrintf(m, "/RangeLMN [ 0.0 0.9642 0.0 1.0000 0.0 0.8249 ]\n"); - - EmitWhiteBlackD50(m, BlackPoint); - EmitIntent(m, INTENT_PERCEPTUAL); - - _cmsIOPrintf(m, ">>\n"); - _cmsIOPrintf(m, "]\n"); - - return 1; -} - - -// Dumps CIEBasedABC Color Space Array - -static -int EmitCIEBasedABC(cmsIOHANDLER* m, cmsFloat64Number* Matrix, cmsToneCurve** CurveSet, cmsCIEXYZ* BlackPoint) -{ - int i; - - _cmsIOPrintf(m, "[ /CIEBasedABC\n"); - _cmsIOPrintf(m, "<<\n"); - _cmsIOPrintf(m, "/DecodeABC [ "); - - EmitNGamma(m, 3, CurveSet); - - _cmsIOPrintf(m, "]\n"); - - _cmsIOPrintf(m, "/MatrixABC [ " ); - - for( i=0; i < 3; i++ ) { - - _cmsIOPrintf(m, "%.6f %.6f %.6f ", Matrix[i + 3*0], - Matrix[i + 3*1], - Matrix[i + 3*2]); - } - - - _cmsIOPrintf(m, "]\n"); - - _cmsIOPrintf(m, "/RangeLMN [ 0.0 0.9642 0.0 1.0000 0.0 0.8249 ]\n"); - - EmitWhiteBlackD50(m, BlackPoint); - EmitIntent(m, INTENT_PERCEPTUAL); - - _cmsIOPrintf(m, ">>\n"); - _cmsIOPrintf(m, "]\n"); - - - return 1; -} - - -static -int EmitCIEBasedDEF(cmsIOHANDLER* m, cmsPipeline* Pipeline, int Intent, cmsCIEXYZ* BlackPoint) -{ - const char* PreMaj; - const char* PostMaj; - const char* PreMin, *PostMin; - cmsStage* mpe; - - mpe = Pipeline ->Elements; - - switch (cmsStageInputChannels(mpe)) { - case 3: - - _cmsIOPrintf(m, "[ /CIEBasedDEF\n"); - PreMaj ="<"; - PostMaj= ">\n"; - PreMin = PostMin = ""; - break; - case 4: - _cmsIOPrintf(m, "[ /CIEBasedDEFG\n"); - PreMaj = "["; - PostMaj = "]\n"; - PreMin = "<"; - PostMin = ">\n"; - break; - default: - return 0; - - } - - _cmsIOPrintf(m, "<<\n"); - - if (cmsStageType(mpe) == cmsSigCurveSetElemType) { - - _cmsIOPrintf(m, "/DecodeDEF [ "); - EmitNGamma(m, cmsStageOutputChannels(mpe), _cmsStageGetPtrToCurveSet(mpe)); - _cmsIOPrintf(m, "]\n"); - - mpe = mpe ->Next; - } - - if (cmsStageType(mpe) == cmsSigCLutElemType) { - - _cmsIOPrintf(m, "/Table "); - WriteCLUT(m, mpe, PreMaj, PostMaj, PreMin, PostMin, FALSE, (cmsColorSpaceSignature) 0); - _cmsIOPrintf(m, "]\n"); - } - - EmitLab2XYZ(m); - EmitWhiteBlackD50(m, BlackPoint); - EmitIntent(m, Intent); - - _cmsIOPrintf(m, " >>\n"); - _cmsIOPrintf(m, "]\n"); - - return 1; -} - -// Generates a curve from a gray profile - -static - cmsToneCurve* ExtractGray2Y(cmsContext ContextID, cmsHPROFILE hProfile, int Intent) -{ - cmsToneCurve* Out = cmsBuildTabulatedToneCurve16(ContextID, 256, NULL); - cmsHPROFILE hXYZ = cmsCreateXYZProfile(); - cmsHTRANSFORM xform = cmsCreateTransformTHR(ContextID, hProfile, TYPE_GRAY_8, hXYZ, TYPE_XYZ_DBL, Intent, cmsFLAGS_NOOPTIMIZE); - int i; - - if (Out != NULL) { - for (i=0; i < 256; i++) { - - cmsUInt8Number Gray = (cmsUInt8Number) i; - cmsCIEXYZ XYZ; - - cmsDoTransform(xform, &Gray, &XYZ, 1); - - Out ->Table16[i] =_cmsQuickSaturateWord(XYZ.Y * 65535.0); - } - } - - cmsDeleteTransform(xform); - cmsCloseProfile(hXYZ); - return Out; -} - - - -// Because PostScript has only 8 bits in /Table, we should use -// a more perceptually uniform space... I do choose Lab. - -static -int WriteInputLUT(cmsIOHANDLER* m, cmsHPROFILE hProfile, int Intent, cmsUInt32Number dwFlags) -{ - cmsHPROFILE hLab; - cmsHTRANSFORM xform; - cmsUInt32Number nChannels; - cmsUInt32Number InputFormat; - int rc; - cmsHPROFILE Profiles[2]; - cmsCIEXYZ BlackPointAdaptedToD50; - - // Does create a device-link based transform. - // The DeviceLink is next dumped as working CSA. - - InputFormat = cmsFormatterForColorspaceOfProfile(hProfile, 2, FALSE); - nChannels = T_CHANNELS(InputFormat); - - - cmsDetectBlackPoint(&BlackPointAdaptedToD50, hProfile, Intent, 0); - - // Adjust output to Lab4 - hLab = cmsCreateLab4ProfileTHR(m ->ContextID, NULL); - - Profiles[0] = hProfile; - Profiles[1] = hLab; - - xform = cmsCreateMultiprofileTransform(Profiles, 2, InputFormat, TYPE_Lab_DBL, Intent, 0); - cmsCloseProfile(hLab); - - if (xform == NULL) { - - cmsSignalError(m ->ContextID, cmsERROR_COLORSPACE_CHECK, "Cannot create transform Profile -> Lab"); - return 0; - } - - // Only 1, 3 and 4 channels are allowed - - switch (nChannels) { - - case 1: { - cmsToneCurve* Gray2Y = ExtractGray2Y(m ->ContextID, hProfile, Intent); - EmitCIEBasedA(m, Gray2Y, &BlackPointAdaptedToD50); - cmsFreeToneCurve(Gray2Y); - } - break; - - case 3: - case 4: { - cmsUInt32Number OutFrm = TYPE_Lab_16; - cmsPipeline* DeviceLink; - _cmsTRANSFORM* v = (_cmsTRANSFORM*) xform; - - DeviceLink = cmsPipelineDup(v ->Lut); - if (DeviceLink == NULL) return 0; - - dwFlags |= cmsFLAGS_FORCE_CLUT; - _cmsOptimizePipeline(m->ContextID, &DeviceLink, Intent, &InputFormat, &OutFrm, &dwFlags); - - rc = EmitCIEBasedDEF(m, DeviceLink, Intent, &BlackPointAdaptedToD50); - cmsPipelineFree(DeviceLink); - if (rc == 0) return 0; - } - break; - - default: - - cmsSignalError(m ->ContextID, cmsERROR_COLORSPACE_CHECK, "Only 3, 4 channels supported for CSA. This profile has %d channels.", nChannels); - return 0; - } - - - cmsDeleteTransform(xform); - - return 1; -} - -static -cmsFloat64Number* GetPtrToMatrix(const cmsStage* mpe) -{ - _cmsStageMatrixData* Data = (_cmsStageMatrixData*) mpe ->Data; - - return Data -> Double; -} - - -// Does create CSA based on matrix-shaper. Allowed types are gray and RGB based - -static -int WriteInputMatrixShaper(cmsIOHANDLER* m, cmsHPROFILE hProfile, cmsStage* Matrix, cmsStage* Shaper) -{ - cmsColorSpaceSignature ColorSpace; - int rc; - cmsCIEXYZ BlackPointAdaptedToD50; - - ColorSpace = cmsGetColorSpace(hProfile); - - cmsDetectBlackPoint(&BlackPointAdaptedToD50, hProfile, INTENT_RELATIVE_COLORIMETRIC, 0); - - if (ColorSpace == cmsSigGrayData) { - - cmsToneCurve** ShaperCurve = _cmsStageGetPtrToCurveSet(Shaper); - rc = EmitCIEBasedA(m, ShaperCurve[0], &BlackPointAdaptedToD50); - - } - else - if (ColorSpace == cmsSigRgbData) { - - cmsMAT3 Mat; - int i, j; - - memmove(&Mat, GetPtrToMatrix(Matrix), sizeof(Mat)); - - for (i=0; i < 3; i++) - for (j=0; j < 3; j++) - Mat.v[i].n[j] *= MAX_ENCODEABLE_XYZ; - - rc = EmitCIEBasedABC(m, (cmsFloat64Number *) &Mat, - _cmsStageGetPtrToCurveSet(Shaper), - &BlackPointAdaptedToD50); - } - else { - - cmsSignalError(m ->ContextID, cmsERROR_COLORSPACE_CHECK, "Profile is not suitable for CSA. Unsupported colorspace."); - return 0; - } - - return rc; -} - - - -// Creates a PostScript color list from a named profile data. -// This is a HP extension, and it works in Lab instead of XYZ - -static -int WriteNamedColorCSA(cmsIOHANDLER* m, cmsHPROFILE hNamedColor, int Intent) -{ - cmsHTRANSFORM xform; - cmsHPROFILE hLab; - int i, nColors; - char ColorName[32]; - cmsNAMEDCOLORLIST* NamedColorList; - - hLab = cmsCreateLab4ProfileTHR(m ->ContextID, NULL); - xform = cmsCreateTransform(hNamedColor, TYPE_NAMED_COLOR_INDEX, hLab, TYPE_Lab_DBL, Intent, 0); - if (xform == NULL) return 0; - - NamedColorList = cmsGetNamedColorList(xform); - if (NamedColorList == NULL) return 0; - - _cmsIOPrintf(m, "<<\n"); - _cmsIOPrintf(m, "(colorlistcomment) (%s)\n", "Named color CSA"); - _cmsIOPrintf(m, "(Prefix) [ (Pantone ) (PANTONE ) ]\n"); - _cmsIOPrintf(m, "(Suffix) [ ( CV) ( CVC) ( C) ]\n"); - - nColors = cmsNamedColorCount(NamedColorList); - - - for (i=0; i < nColors; i++) { - - cmsUInt16Number In[1]; - cmsCIELab Lab; - - In[0] = (cmsUInt16Number) i; - - if (!cmsNamedColorInfo(NamedColorList, i, ColorName, NULL, NULL, NULL, NULL)) - continue; - - cmsDoTransform(xform, In, &Lab, 1); - _cmsIOPrintf(m, " (%s) [ %.3f %.3f %.3f ]\n", ColorName, Lab.L, Lab.a, Lab.b); - } - - - - _cmsIOPrintf(m, ">>\n"); - - cmsDeleteTransform(xform); - cmsCloseProfile(hLab); - return 1; -} - - -// Does create a Color Space Array on XYZ colorspace for PostScript usage -static -cmsUInt32Number GenerateCSA(cmsContext ContextID, - cmsHPROFILE hProfile, - cmsUInt32Number Intent, - cmsUInt32Number dwFlags, - cmsIOHANDLER* mem) -{ - cmsUInt32Number dwBytesUsed; - cmsPipeline* lut = NULL; - cmsStage* Matrix, *Shaper; - - - // Is a named color profile? - if (cmsGetDeviceClass(hProfile) == cmsSigNamedColorClass) { - - if (!WriteNamedColorCSA(mem, hProfile, Intent)) goto Error; - } - else { - - - // Any profile class are allowed (including devicelink), but - // output (PCS) colorspace must be XYZ or Lab - cmsColorSpaceSignature ColorSpace = cmsGetPCS(hProfile); - - if (ColorSpace != cmsSigXYZData && - ColorSpace != cmsSigLabData) { - - cmsSignalError(ContextID, cmsERROR_COLORSPACE_CHECK, "Invalid output color space"); - goto Error; - } - - - // Read the lut with all necessary conversion stages - lut = _cmsReadInputLUT(hProfile, Intent); - if (lut == NULL) goto Error; - - - // Tone curves + matrix can be implemented without any LUT - if (cmsPipelineCheckAndRetreiveStages(lut, 2, cmsSigCurveSetElemType, cmsSigMatrixElemType, &Shaper, &Matrix)) { - - if (!WriteInputMatrixShaper(mem, hProfile, Matrix, Shaper)) goto Error; - - } - else { - // We need a LUT for the rest - if (!WriteInputLUT(mem, hProfile, Intent, dwFlags)) goto Error; - } - } - - - // Done, keep memory usage - dwBytesUsed = mem ->UsedSpace; - - // Get rid of LUT - if (lut != NULL) cmsPipelineFree(lut); - - // Finally, return used byte count - return dwBytesUsed; - -Error: - if (lut != NULL) cmsPipelineFree(lut); - return 0; -} - -// ------------------------------------------------------ Color Rendering Dictionary (CRD) - - - -/* - - Black point compensation plus chromatic adaptation: - - Step 1 - Chromatic adaptation - ============================= - - WPout - X = ------- PQR - Wpin - - Step 2 - Black point compensation - ================================= - - (WPout - BPout)*X - WPout*(BPin - BPout) - out = --------------------------------------- - WPout - BPin - - - Algorithm discussion - ==================== - - TransformPQR(WPin, BPin, WPout, BPout, PQR) - - Wpin,etc= { Xws Yws Zws Pws Qws Rws } - - - Algorithm Stack 0...n - =========================================================== - PQR BPout WPout BPin WPin - 4 index 3 get WPin PQR BPout WPout BPin WPin - div (PQR/WPin) BPout WPout BPin WPin - 2 index 3 get WPout (PQR/WPin) BPout WPout BPin WPin - mult WPout*(PQR/WPin) BPout WPout BPin WPin - - 2 index 3 get WPout WPout*(PQR/WPin) BPout WPout BPin WPin - 2 index 3 get BPout WPout WPout*(PQR/WPin) BPout WPout BPin WPin - sub (WPout-BPout) WPout*(PQR/WPin) BPout WPout BPin WPin - mult (WPout-BPout)* WPout*(PQR/WPin) BPout WPout BPin WPin - - 2 index 3 get WPout (BPout-WPout)* WPout*(PQR/WPin) BPout WPout BPin WPin - 4 index 3 get BPin WPout (BPout-WPout)* WPout*(PQR/WPin) BPout WPout BPin WPin - 3 index 3 get BPout BPin WPout (BPout-WPout)* WPout*(PQR/WPin) BPout WPout BPin WPin - - sub (BPin-BPout) WPout (BPout-WPout)* WPout*(PQR/WPin) BPout WPout BPin WPin - mult (BPin-BPout)*WPout (BPout-WPout)* WPout*(PQR/WPin) BPout WPout BPin WPin - sub (BPout-WPout)* WPout*(PQR/WPin)-(BPin-BPout)*WPout BPout WPout BPin WPin - - 3 index 3 get BPin (BPout-WPout)* WPout*(PQR/WPin)-(BPin-BPout)*WPout BPout WPout BPin WPin - 3 index 3 get WPout BPin (BPout-WPout)* WPout*(PQR/WPin)-(BPin-BPout)*WPout BPout WPout BPin WPin - exch - sub (WPout-BPin) (BPout-WPout)* WPout*(PQR/WPin)-(BPin-BPout)*WPout BPout WPout BPin WPin - div - - exch pop - exch pop - exch pop - exch pop - -*/ - - -static -void EmitPQRStage(cmsIOHANDLER* m, cmsHPROFILE hProfile, int DoBPC, int lIsAbsolute) -{ - - - if (lIsAbsolute) { - - // For absolute colorimetric intent, encode back to relative - // and generate a relative Pipeline - - // Relative encoding is obtained across XYZpcs*(D50/WhitePoint) - - cmsCIEXYZ White; - - _cmsReadMediaWhitePoint(&White, hProfile); - - _cmsIOPrintf(m,"/MatrixPQR [1 0 0 0 1 0 0 0 1 ]\n"); - _cmsIOPrintf(m,"/RangePQR [ -0.5 2 -0.5 2 -0.5 2 ]\n"); - - _cmsIOPrintf(m, "%% Absolute colorimetric -- encode to relative to maximize LUT usage\n" - "/TransformPQR [\n" - "{0.9642 mul %g div exch pop exch pop exch pop exch pop} bind\n" - "{1.0000 mul %g div exch pop exch pop exch pop exch pop} bind\n" - "{0.8249 mul %g div exch pop exch pop exch pop exch pop} bind\n]\n", - White.X, White.Y, White.Z); - return; - } - - - _cmsIOPrintf(m,"%% Bradford Cone Space\n" - "/MatrixPQR [0.8951 -0.7502 0.0389 0.2664 1.7135 -0.0685 -0.1614 0.0367 1.0296 ] \n"); - - _cmsIOPrintf(m, "/RangePQR [ -0.5 2 -0.5 2 -0.5 2 ]\n"); - - - // No BPC - - if (!DoBPC) { - - _cmsIOPrintf(m, "%% VonKries-like transform in Bradford Cone Space\n" - "/TransformPQR [\n" - "{exch pop exch 3 get mul exch pop exch 3 get div} bind\n" - "{exch pop exch 4 get mul exch pop exch 4 get div} bind\n" - "{exch pop exch 5 get mul exch pop exch 5 get div} bind\n]\n"); - } else { - - // BPC - - _cmsIOPrintf(m, "%% VonKries-like transform in Bradford Cone Space plus BPC\n" - "/TransformPQR [\n"); - - _cmsIOPrintf(m, "{4 index 3 get div 2 index 3 get mul " - "2 index 3 get 2 index 3 get sub mul " - "2 index 3 get 4 index 3 get 3 index 3 get sub mul sub " - "3 index 3 get 3 index 3 get exch sub div " - "exch pop exch pop exch pop exch pop } bind\n"); - - _cmsIOPrintf(m, "{4 index 4 get div 2 index 4 get mul " - "2 index 4 get 2 index 4 get sub mul " - "2 index 4 get 4 index 4 get 3 index 4 get sub mul sub " - "3 index 4 get 3 index 4 get exch sub div " - "exch pop exch pop exch pop exch pop } bind\n"); - - _cmsIOPrintf(m, "{4 index 5 get div 2 index 5 get mul " - "2 index 5 get 2 index 5 get sub mul " - "2 index 5 get 4 index 5 get 3 index 5 get sub mul sub " - "3 index 5 get 3 index 5 get exch sub div " - "exch pop exch pop exch pop exch pop } bind\n]\n"); - - } - - -} - - -static -void EmitXYZ2Lab(cmsIOHANDLER* m) -{ - _cmsIOPrintf(m, "/RangeLMN [ -0.635 2.0 0 2 -0.635 2.0 ]\n"); - _cmsIOPrintf(m, "/EncodeLMN [\n"); - _cmsIOPrintf(m, "{ 0.964200 div dup 0.008856 le {7.787 mul 16 116 div add}{1 3 div exp} ifelse } bind\n"); - _cmsIOPrintf(m, "{ 1.000000 div dup 0.008856 le {7.787 mul 16 116 div add}{1 3 div exp} ifelse } bind\n"); - _cmsIOPrintf(m, "{ 0.824900 div dup 0.008856 le {7.787 mul 16 116 div add}{1 3 div exp} ifelse } bind\n"); - _cmsIOPrintf(m, "]\n"); - _cmsIOPrintf(m, "/MatrixABC [ 0 1 0 1 -1 1 0 0 -1 ]\n"); - _cmsIOPrintf(m, "/EncodeABC [\n"); - - - _cmsIOPrintf(m, "{ 116 mul 16 sub 100 div } bind\n"); - _cmsIOPrintf(m, "{ 500 mul 128 add 256 div } bind\n"); - _cmsIOPrintf(m, "{ 200 mul 128 add 256 div } bind\n"); - - - _cmsIOPrintf(m, "]\n"); - - -} - -// Due to impedance mismatch between XYZ and almost all RGB and CMYK spaces -// I choose to dump LUTS in Lab instead of XYZ. There is still a lot of wasted -// space on 3D CLUT, but since space seems not to be a problem here, 33 points -// would give a reasonable accurancy. Note also that CRD tables must operate in -// 8 bits. - -static -int WriteOutputLUT(cmsIOHANDLER* m, cmsHPROFILE hProfile, int Intent, cmsUInt32Number dwFlags) -{ - cmsHPROFILE hLab; - cmsHTRANSFORM xform; - int i, nChannels; - cmsUInt32Number OutputFormat; - _cmsTRANSFORM* v; - cmsPipeline* DeviceLink; - cmsHPROFILE Profiles[3]; - cmsCIEXYZ BlackPointAdaptedToD50; - cmsBool lDoBPC = (dwFlags & cmsFLAGS_BLACKPOINTCOMPENSATION); - cmsBool lFixWhite = !(dwFlags & cmsFLAGS_NOWHITEONWHITEFIXUP); - cmsUInt32Number InFrm = TYPE_Lab_16; - int RelativeEncodingIntent; - cmsColorSpaceSignature ColorSpace; - - - hLab = cmsCreateLab4ProfileTHR(m ->ContextID, NULL); - if (hLab == NULL) return 0; - - OutputFormat = cmsFormatterForColorspaceOfProfile(hProfile, 2, FALSE); - nChannels = T_CHANNELS(OutputFormat); - - ColorSpace = cmsGetColorSpace(hProfile); - - // For absolute colorimetric, the LUT is encoded as relative in order to preserve precision. - - RelativeEncodingIntent = Intent; - if (RelativeEncodingIntent == INTENT_ABSOLUTE_COLORIMETRIC) - RelativeEncodingIntent = INTENT_RELATIVE_COLORIMETRIC; - - - // Use V4 Lab always - Profiles[0] = hLab; - Profiles[1] = hProfile; - - xform = cmsCreateMultiprofileTransformTHR(m ->ContextID, - Profiles, 2, TYPE_Lab_DBL, - OutputFormat, RelativeEncodingIntent, 0); - cmsCloseProfile(hLab); - - if (xform == NULL) { - - cmsSignalError(m ->ContextID, cmsERROR_COLORSPACE_CHECK, "Cannot create transform Lab -> Profile in CRD creation"); - return 0; - } - - // Get a copy of the internal devicelink - v = (_cmsTRANSFORM*) xform; - DeviceLink = cmsPipelineDup(v ->Lut); - if (DeviceLink == NULL) return 0; - - - // We need a CLUT - dwFlags |= cmsFLAGS_FORCE_CLUT; - _cmsOptimizePipeline(m->ContextID, &DeviceLink, RelativeEncodingIntent, &InFrm, &OutputFormat, &dwFlags); - - _cmsIOPrintf(m, "<<\n"); - _cmsIOPrintf(m, "/ColorRenderingType 1\n"); - - - cmsDetectBlackPoint(&BlackPointAdaptedToD50, hProfile, Intent, 0); - - // Emit headers, etc. - EmitWhiteBlackD50(m, &BlackPointAdaptedToD50); - EmitPQRStage(m, hProfile, lDoBPC, Intent == INTENT_ABSOLUTE_COLORIMETRIC); - EmitXYZ2Lab(m); - - - // FIXUP: map Lab (100, 0, 0) to perfect white, because the particular encoding for Lab - // does map a=b=0 not falling into any specific node. Since range a,b goes -128..127, - // zero is slightly moved towards right, so assure next node (in L=100 slice) is mapped to - // zero. This would sacrifice a bit of highlights, but failure to do so would cause - // scum dot. Ouch. - - if (Intent == INTENT_ABSOLUTE_COLORIMETRIC) - lFixWhite = FALSE; - - _cmsIOPrintf(m, "/RenderTable "); - - - WriteCLUT(m, cmsPipelineGetPtrToFirstStage(DeviceLink), "<", ">\n", "", "", lFixWhite, ColorSpace); - - _cmsIOPrintf(m, " %d {} bind ", nChannels); - - for (i=1; i < nChannels; i++) - _cmsIOPrintf(m, "dup "); - - _cmsIOPrintf(m, "]\n"); - - - EmitIntent(m, Intent); - - _cmsIOPrintf(m, ">>\n"); - - if (!(dwFlags & cmsFLAGS_NODEFAULTRESOURCEDEF)) { - - _cmsIOPrintf(m, "/Current exch /ColorRendering defineresource pop\n"); - } - - cmsPipelineFree(DeviceLink); - cmsDeleteTransform(xform); - - return 1; -} - - -// Builds a ASCII string containing colorant list in 0..1.0 range -static -void BuildColorantList(char *Colorant, int nColorant, cmsUInt16Number Out[]) -{ - char Buff[32]; - int j; - - Colorant[0] = 0; - if (nColorant > cmsMAXCHANNELS) - nColorant = cmsMAXCHANNELS; - - for (j=0; j < nColorant; j++) { - - sprintf(Buff, "%.3f", Out[j] / 65535.0); - strcat(Colorant, Buff); - if (j < nColorant -1) - strcat(Colorant, " "); - - } -} - - -// Creates a PostScript color list from a named profile data. -// This is a HP extension. - -static -int WriteNamedColorCRD(cmsIOHANDLER* m, cmsHPROFILE hNamedColor, int Intent, cmsUInt32Number dwFlags) -{ - cmsHTRANSFORM xform; - int i, nColors, nColorant; - cmsUInt32Number OutputFormat; - char ColorName[32]; - char Colorant[128]; - cmsNAMEDCOLORLIST* NamedColorList; - - - OutputFormat = cmsFormatterForColorspaceOfProfile(hNamedColor, 2, FALSE); - nColorant = T_CHANNELS(OutputFormat); - - - xform = cmsCreateTransform(hNamedColor, TYPE_NAMED_COLOR_INDEX, NULL, OutputFormat, Intent, dwFlags); - if (xform == NULL) return 0; - - - NamedColorList = cmsGetNamedColorList(xform); - if (NamedColorList == NULL) return 0; - - _cmsIOPrintf(m, "<<\n"); - _cmsIOPrintf(m, "(colorlistcomment) (%s) \n", "Named profile"); - _cmsIOPrintf(m, "(Prefix) [ (Pantone ) (PANTONE ) ]\n"); - _cmsIOPrintf(m, "(Suffix) [ ( CV) ( CVC) ( C) ]\n"); - - nColors = cmsNamedColorCount(NamedColorList); - - for (i=0; i < nColors; i++) { - - cmsUInt16Number In[1]; - cmsUInt16Number Out[cmsMAXCHANNELS]; - - In[0] = (cmsUInt16Number) i; - - if (!cmsNamedColorInfo(NamedColorList, i, ColorName, NULL, NULL, NULL, NULL)) - continue; - - cmsDoTransform(xform, In, Out, 1); - BuildColorantList(Colorant, nColorant, Out); - _cmsIOPrintf(m, " (%s) [ %s ]\n", ColorName, Colorant); - } - - _cmsIOPrintf(m, " >>"); - - if (!(dwFlags & cmsFLAGS_NODEFAULTRESOURCEDEF)) { - - _cmsIOPrintf(m, " /Current exch /HPSpotTable defineresource pop\n"); - } - - cmsDeleteTransform(xform); - return 1; -} - - - -// This one does create a Color Rendering Dictionary. -// CRD are always LUT-Based, no matter if profile is -// implemented as matrix-shaper. - -static -cmsUInt32Number GenerateCRD(cmsContext ContextID, - cmsHPROFILE hProfile, - cmsUInt32Number Intent, cmsUInt32Number dwFlags, - cmsIOHANDLER* mem) -{ - cmsUInt32Number dwBytesUsed; - - if (!(dwFlags & cmsFLAGS_NODEFAULTRESOURCEDEF)) { - - EmitHeader(mem, "Color Rendering Dictionary (CRD)", hProfile); - } - - - // Is a named color profile? - if (cmsGetDeviceClass(hProfile) == cmsSigNamedColorClass) { - - if (!WriteNamedColorCRD(mem, hProfile, Intent, dwFlags)) { - return 0; - } - } - else { - - // CRD are always implemented as LUT - - if (!WriteOutputLUT(mem, hProfile, Intent, dwFlags)) { - return 0; - } - } - - if (!(dwFlags & cmsFLAGS_NODEFAULTRESOURCEDEF)) { - - _cmsIOPrintf(mem, "%%%%EndResource\n"); - _cmsIOPrintf(mem, "\n%% CRD End\n"); - } - - // Done, keep memory usage - dwBytesUsed = mem ->UsedSpace; - - // Finally, return used byte count - return dwBytesUsed; - - cmsUNUSED_PARAMETER(ContextID); -} - - - - -cmsUInt32Number CMSEXPORT cmsGetPostScriptColorResource(cmsContext ContextID, - cmsPSResourceType Type, - cmsHPROFILE hProfile, - cmsUInt32Number Intent, - cmsUInt32Number dwFlags, - cmsIOHANDLER* io) -{ - cmsUInt32Number rc; - - - switch (Type) { - - case cmsPS_RESOURCE_CSA: - rc = GenerateCSA(ContextID, hProfile, Intent, dwFlags, io); - break; - - default: - case cmsPS_RESOURCE_CRD: - rc = GenerateCRD(ContextID, hProfile, Intent, dwFlags, io); - break; - } - - return rc; -} - - - -cmsUInt32Number CMSEXPORT cmsGetPostScriptCRD(cmsContext ContextID, - cmsHPROFILE hProfile, - cmsUInt32Number Intent, cmsUInt32Number dwFlags, - void* Buffer, cmsUInt32Number dwBufferLen) -{ - cmsIOHANDLER* mem; - cmsUInt32Number dwBytesUsed; - - // Set up the serialization engine - if (Buffer == NULL) - mem = cmsOpenIOhandlerFromNULL(ContextID); - else - mem = cmsOpenIOhandlerFromMem(ContextID, Buffer, dwBufferLen, "w"); - - if (!mem) return 0; - - dwBytesUsed = cmsGetPostScriptColorResource(ContextID, cmsPS_RESOURCE_CRD, hProfile, Intent, dwFlags, mem); - - // Get rid of memory stream - cmsCloseIOhandler(mem); - - return dwBytesUsed; -} - - - -// Does create a Color Space Array on XYZ colorspace for PostScript usage -cmsUInt32Number CMSEXPORT cmsGetPostScriptCSA(cmsContext ContextID, - cmsHPROFILE hProfile, - cmsUInt32Number Intent, - cmsUInt32Number dwFlags, - void* Buffer, - cmsUInt32Number dwBufferLen) -{ - cmsIOHANDLER* mem; - cmsUInt32Number dwBytesUsed; - - if (Buffer == NULL) - mem = cmsOpenIOhandlerFromNULL(ContextID); - else - mem = cmsOpenIOhandlerFromMem(ContextID, Buffer, dwBufferLen, "w"); - - if (!mem) return 0; - - dwBytesUsed = cmsGetPostScriptColorResource(ContextID, cmsPS_RESOURCE_CSA, hProfile, Intent, dwFlags, mem); - - // Get rid of memory stream - cmsCloseIOhandler(mem); - - return dwBytesUsed; - -} |