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383 lines
11 KiB
C
Executable File
383 lines
11 KiB
C
Executable File
//
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// Little cms
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// Copyright (C) 1998-2007 Marti Maria
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the Software
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// is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
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// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#include "lcms.h"
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// Shaper/Matrix handling
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// This routines handles the matrix-shaper method. A note about domain
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// is here required. If the shaper-matrix is invoked on INPUT profiles,
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// after the shaper process, we have a value between 0 and 0xFFFF. Thus,
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// for proper matrix handling, we must convert it to 15fix16, so
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// ToFixedDomain might be called. But cmsLinearInterpFixed() returns
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// data yet in fixed point, so no additional process is required.
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// Then, we obtain data on 15.16, so we need to shift >> by 1 to
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// obtain 1.15 PCS format.
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// On OUTPUT profiles, things are inverse, we must first expand 1 bit
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// by shifting left, and then convert result between 0 and 1.000 to
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// RGB, so FromFixedDomain() must be called before pass values to
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// shaper. Trickly, there is a situation where this shifts works
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// little different. Sometimes, lcms smelts input/output
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// matrices into a single, one shaper, process. In such cases, since
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// input is encoded from 0 to 0xffff, we must first use the shaper and
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// then the matrix, an additional FromFixedDomain() must be used to
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// accomodate output values.
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// For a sake of simplicity, I will handle this three behaviours
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// with different routines, so the flags MATSHAPER_INPUT and MATSHAPER_OUTPUT
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// can be conbined to signal smelted matrix-shapers
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static
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int ComputeTables(LPGAMMATABLE Table[3], LPWORD Out[3], LPL16PARAMS p16)
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{
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int i, AllLinear;
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cmsCalcL16Params(Table[0] -> nEntries, p16);
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AllLinear = 0;
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for (i=0; i < 3; i++)
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{
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LPWORD PtrW;
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PtrW = (LPWORD) _cmsMalloc(sizeof(WORD) * p16 -> nSamples);
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if (PtrW == NULL) return -1; // Signal error
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CopyMemory(PtrW, Table[i] -> GammaTable, sizeof(WORD) * Table[i] -> nEntries);
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Out[i] = PtrW; // Set table pointer
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// Linear after all?
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AllLinear += cmsIsLinear(PtrW, p16 -> nSamples);
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}
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// If is all linear, then supress table interpolation (this
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// will speed greately some trivial operations.
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// Return 1 if present, 0 if all linear
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if (AllLinear != 3) return 1;
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return 0;
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}
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LPMATSHAPER cmsAllocMatShaper2(LPMAT3 Matrix, LPGAMMATABLE In[], LPGAMMATABLE Out[], DWORD Behaviour)
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{
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LPMATSHAPER NewMatShaper;
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int rc;
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NewMatShaper = (LPMATSHAPER) _cmsMalloc(sizeof(MATSHAPER));
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if (NewMatShaper)
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ZeroMemory(NewMatShaper, sizeof(MATSHAPER));
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NewMatShaper->dwFlags = Behaviour & (MATSHAPER_ALLSMELTED);
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// Fill matrix part
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MAT3toFix(&NewMatShaper -> Matrix, Matrix);
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// Reality check
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if (!MAT3isIdentity(&NewMatShaper -> Matrix, 0.00001))
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NewMatShaper -> dwFlags |= MATSHAPER_HASMATRIX;
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// Now, on the table characteristics
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if (Out) {
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rc = ComputeTables(Out, NewMatShaper ->L, &NewMatShaper ->p16);
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if (rc < 0) {
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cmsFreeMatShaper(NewMatShaper);
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return NULL;
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}
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if (rc == 1) NewMatShaper -> dwFlags |= MATSHAPER_HASSHAPER;
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}
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if (In) {
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rc = ComputeTables(In, NewMatShaper ->L2, &NewMatShaper ->p2_16);
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if (rc < 0) {
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cmsFreeMatShaper(NewMatShaper);
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return NULL;
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}
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if (rc == 1) NewMatShaper -> dwFlags |= MATSHAPER_HASINPSHAPER;
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}
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return NewMatShaper;
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}
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// Creation & Destruction
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LPMATSHAPER cmsAllocMatShaper(LPMAT3 Matrix, LPGAMMATABLE Tables[], DWORD Behaviour)
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{
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LPMATSHAPER NewMatShaper;
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int i, AllLinear;
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if (Matrix == NULL) return NULL;
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for (i=0; i < 3; i++) {
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if (Tables[i] == NULL) return NULL;
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}
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NewMatShaper = (LPMATSHAPER) _cmsMalloc(sizeof(MATSHAPER));
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if (NewMatShaper)
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ZeroMemory(NewMatShaper, sizeof(MATSHAPER));
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NewMatShaper->dwFlags = Behaviour & (MATSHAPER_ALLSMELTED);
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// Fill matrix part
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MAT3toFix(&NewMatShaper -> Matrix, Matrix);
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// Reality check
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if (!MAT3isIdentity(&NewMatShaper -> Matrix, 0.00001))
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NewMatShaper -> dwFlags |= MATSHAPER_HASMATRIX;
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// Now, on the table characteristics
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cmsCalcL16Params(Tables[0] -> nEntries, &NewMatShaper -> p16);
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// Copy tables
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AllLinear = 0;
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for (i=0; i < 3; i++) {
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LPWORD PtrW;
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PtrW = (LPWORD) _cmsMalloc(sizeof(WORD) * NewMatShaper -> p16.nSamples);
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if (PtrW == NULL) {
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cmsFreeMatShaper(NewMatShaper);
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return NULL;
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}
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CopyMemory(PtrW, Tables[i] -> GammaTable,
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sizeof(WORD) * Tables[i] -> nEntries);
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NewMatShaper -> L[i] = PtrW; // Set table pointer
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// Linear after all?
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AllLinear += cmsIsLinear(PtrW, NewMatShaper -> p16.nSamples);
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}
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// If is all linear, then supress table interpolation (this
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// will speed greately some trivial operations
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if (AllLinear != 3)
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NewMatShaper -> dwFlags |= MATSHAPER_HASSHAPER;
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return NewMatShaper;
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}
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// Free associated memory
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void cmsFreeMatShaper(LPMATSHAPER MatShaper)
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{
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int i;
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if (!MatShaper) return;
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for (i=0; i < 3; i++)
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{
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if (MatShaper -> L[i]) _cmsFree(MatShaper ->L[i]);
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if (MatShaper -> L2[i]) _cmsFree(MatShaper ->L2[i]);
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}
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_cmsFree(MatShaper);
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}
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// All smelted must postpose gamma to last stage.
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static
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void AllSmeltedBehaviour(LPMATSHAPER MatShaper, WORD In[], WORD Out[])
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{
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WORD tmp[3];
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WVEC3 InVect, OutVect;
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if (MatShaper -> dwFlags & MATSHAPER_HASINPSHAPER)
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{
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InVect.n[VX] = cmsLinearInterpFixed(In[0], MatShaper -> L2[0], &MatShaper -> p2_16);
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InVect.n[VY] = cmsLinearInterpFixed(In[1], MatShaper -> L2[1], &MatShaper -> p2_16);
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InVect.n[VZ] = cmsLinearInterpFixed(In[2], MatShaper -> L2[2], &MatShaper -> p2_16);
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}
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else
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{
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InVect.n[VX] = ToFixedDomain(In[0]);
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InVect.n[VY] = ToFixedDomain(In[1]);
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InVect.n[VZ] = ToFixedDomain(In[2]);
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}
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if (MatShaper -> dwFlags & MATSHAPER_HASMATRIX)
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{
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MAT3evalW(&OutVect, &MatShaper -> Matrix, &InVect);
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}
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else {
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OutVect.n[VX] = InVect.n[VX];
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OutVect.n[VY] = InVect.n[VY];
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OutVect.n[VZ] = InVect.n[VZ];
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}
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tmp[0] = _cmsClampWord(FromFixedDomain(OutVect.n[VX]));
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tmp[1] = _cmsClampWord(FromFixedDomain(OutVect.n[VY]));
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tmp[2] = _cmsClampWord(FromFixedDomain(OutVect.n[VZ]));
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if (MatShaper -> dwFlags & MATSHAPER_HASSHAPER)
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{
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Out[0] = cmsLinearInterpLUT16(tmp[0], MatShaper -> L[0], &MatShaper -> p16);
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Out[1] = cmsLinearInterpLUT16(tmp[1], MatShaper -> L[1], &MatShaper -> p16);
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Out[2] = cmsLinearInterpLUT16(tmp[2], MatShaper -> L[2], &MatShaper -> p16);
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}
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else
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{
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Out[0] = tmp[0];
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Out[1] = tmp[1];
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Out[2] = tmp[2];
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}
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}
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static
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void InputBehaviour(LPMATSHAPER MatShaper, WORD In[], WORD Out[])
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{
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WVEC3 InVect, OutVect;
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if (MatShaper -> dwFlags & MATSHAPER_HASSHAPER)
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{
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InVect.n[VX] = cmsLinearInterpFixed(In[0], MatShaper -> L[0], &MatShaper -> p16);
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InVect.n[VY] = cmsLinearInterpFixed(In[1], MatShaper -> L[1], &MatShaper -> p16);
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InVect.n[VZ] = cmsLinearInterpFixed(In[2], MatShaper -> L[2], &MatShaper -> p16);
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}
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else
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{
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InVect.n[VX] = ToFixedDomain(In[0]);
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InVect.n[VY] = ToFixedDomain(In[1]);
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InVect.n[VZ] = ToFixedDomain(In[2]);
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}
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if (MatShaper -> dwFlags & MATSHAPER_HASMATRIX)
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{
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MAT3evalW(&OutVect, &MatShaper -> Matrix, &InVect);
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}
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else
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{
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OutVect = InVect;
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}
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// PCS in 1Fixed15 format, adjusting
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Out[0] = _cmsClampWord((OutVect.n[VX]) >> 1);
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Out[1] = _cmsClampWord((OutVect.n[VY]) >> 1);
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Out[2] = _cmsClampWord((OutVect.n[VZ]) >> 1);
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}
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static
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void OutputBehaviour(LPMATSHAPER MatShaper, WORD In[], WORD Out[])
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{
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WVEC3 InVect, OutVect;
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int i;
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// We need to convert from XYZ to RGB, here we must
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// shift << 1 to pass between 1.15 to 15.16 formats
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InVect.n[VX] = (Fixed32) In[0] << 1;
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InVect.n[VY] = (Fixed32) In[1] << 1;
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InVect.n[VZ] = (Fixed32) In[2] << 1;
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if (MatShaper -> dwFlags & MATSHAPER_HASMATRIX)
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{
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MAT3evalW(&OutVect, &MatShaper -> Matrix, &InVect);
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}
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else
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{
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OutVect = InVect;
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}
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if (MatShaper -> dwFlags & MATSHAPER_HASSHAPER)
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{
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for (i=0; i < 3; i++)
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{
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Out[i] = cmsLinearInterpLUT16(
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_cmsClampWord(FromFixedDomain(OutVect.n[i])),
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MatShaper -> L[i],
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&MatShaper ->p16);
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}
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}
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else
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{
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// Result from fixed domain to RGB
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Out[0] = _cmsClampWord(FromFixedDomain(OutVect.n[VX]));
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Out[1] = _cmsClampWord(FromFixedDomain(OutVect.n[VY]));
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Out[2] = _cmsClampWord(FromFixedDomain(OutVect.n[VZ]));
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}
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}
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// Master on evaluating shapers, 3 different behaviours
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void cmsEvalMatShaper(LPMATSHAPER MatShaper, WORD In[], WORD Out[])
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{
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if ((MatShaper -> dwFlags & MATSHAPER_ALLSMELTED) == MATSHAPER_ALLSMELTED)
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{
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AllSmeltedBehaviour(MatShaper, In, Out);
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return;
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}
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if (MatShaper -> dwFlags & MATSHAPER_INPUT)
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{
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InputBehaviour(MatShaper, In, Out);
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return;
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}
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OutputBehaviour(MatShaper, In, Out);
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}
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