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openjpeg/thirdparty/liblcms2/src/cmsxform.c

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//---------------------------------------------------------------------------------
//
// Little Color Management System
// Copyright (c) 1998-2010 Marti Maria Saguer
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//---------------------------------------------------------------------------------
//
#include "lcms2_internal.h"
// Transformations stuff
// -----------------------------------------------------------------------
// Alarm codes for 16-bit transformations, because the fixed range of containers there are
// no values left to mark out of gamut. volatile is C99 per 6.2.5
static volatile cmsUInt16Number Alarm[cmsMAXCHANNELS];
static volatile cmsFloat64Number GlobalAdaptationState = 0;
// The adaptation state may be defaulted by this function. If you don't like it, use the extended transform routine
cmsFloat64Number CMSEXPORT cmsSetAdaptationState(cmsFloat64Number d)
{
cmsFloat64Number OldVal = GlobalAdaptationState;
if (d >= 0)
GlobalAdaptationState = d;
return OldVal;
}
// Alarm codes are always global
void CMSEXPORT cmsSetAlarmCodes(cmsUInt16Number NewAlarm[cmsMAXCHANNELS])
{
int i;
_cmsAssert(NewAlarm != NULL);
for (i=0; i < cmsMAXCHANNELS; i++)
Alarm[i] = NewAlarm[i];
}
// You can get the codes cas well
void CMSEXPORT cmsGetAlarmCodes(cmsUInt16Number OldAlarm[cmsMAXCHANNELS])
{
int i;
_cmsAssert(OldAlarm != NULL);
for (i=0; i < cmsMAXCHANNELS; i++)
OldAlarm[i] = Alarm[i];
}
// Get rid of transform resources
void CMSEXPORT cmsDeleteTransform(cmsHTRANSFORM hTransform)
{
_cmsTRANSFORM* p = (_cmsTRANSFORM*) hTransform;
_cmsAssert(p != NULL);
if (p -> GamutCheck)
cmsPipelineFree(p -> GamutCheck);
if (p -> Lut)
cmsPipelineFree(p -> Lut);
if (p ->InputColorant)
cmsFreeNamedColorList(p ->InputColorant);
if (p -> OutputColorant)
cmsFreeNamedColorList(p ->OutputColorant);
if (p ->Sequence)
cmsFreeProfileSequenceDescription(p ->Sequence);
LCMS_FREE_LOCK(&p->rwlock);
_cmsFree(p ->ContextID, (void *) p);
}
// Apply transform
void CMSEXPORT cmsDoTransform(cmsHTRANSFORM Transform,
const void* InputBuffer,
void* OutputBuffer,
cmsUInt32Number Size)
{
_cmsTRANSFORM* p = (_cmsTRANSFORM*) Transform;
p -> xform(p, InputBuffer, OutputBuffer, Size);
}
// Transform routines ----------------------------------------------------------------------------------------------------------
// Float xform converts floats. Since there are no performance issues, one routine does all job, including gamut check.
// Note that because extended range, we can use a -1.0 value for out of gamut in this case.
static
void FloatXFORM(_cmsTRANSFORM* p,
const void* in,
void* out, cmsUInt32Number Size)
{
cmsUInt8Number* accum;
cmsUInt8Number* output;
cmsFloat32Number fIn[cmsMAXCHANNELS], fOut[cmsMAXCHANNELS];
cmsFloat32Number OutOfGamut;
cmsUInt32Number i, j;
accum = (cmsUInt8Number*) in;
output = (cmsUInt8Number*) out;
for (i=0; i < Size; i++) {
accum = p -> FromInputFloat(p, fIn, accum, Size);
// Any gamut chack to do?
if (p ->GamutCheck != NULL) {
// Evaluate gamut marker.
cmsPipelineEvalFloat( fIn, &OutOfGamut, p ->GamutCheck);
// Is current color out of gamut?
if (OutOfGamut > 0.0) {
// Certainly, out of gamut
for (j=0; j < cmsMAXCHANNELS; j++)
fOut[j] = -1.0;
}
else {
// No, proceed normally
cmsPipelineEvalFloat(fIn, fOut, p -> Lut);
}
}
else {
// No gamut check at all
cmsPipelineEvalFloat(fIn, fOut, p -> Lut);
}
// Back to asked representation
output = p -> ToOutputFloat(p, fOut, output, Size);
}
}
// 16 bit precision -----------------------------------------------------------------------------------------------------------
// Null transformation, only applies formatters. No cach<63>
static
void NullXFORM(_cmsTRANSFORM* p,
const void* in,
void* out, cmsUInt32Number Size)
{
cmsUInt8Number* accum;
cmsUInt8Number* output;
cmsUInt16Number wIn[cmsMAXCHANNELS];
cmsUInt32Number i, n;
accum = (cmsUInt8Number*) in;
output = (cmsUInt8Number*) out;
n = Size; // Buffer len
for (i=0; i < n; i++) {
accum = p -> FromInput(p, wIn, accum, Size);
output = p -> ToOutput(p, wIn, output, Size);
}
}
// No gamut check, no cache, 16 bits
static
void PrecalculatedXFORM(_cmsTRANSFORM* p,
const void* in,
void* out, cmsUInt32Number Size)
{
register cmsUInt8Number* accum;
register cmsUInt8Number* output;
cmsUInt16Number wIn[cmsMAXCHANNELS], wOut[cmsMAXCHANNELS];
cmsUInt32Number i, n;
accum = (cmsUInt8Number*) in;
output = (cmsUInt8Number*) out;
n = Size;
for (i=0; i < n; i++) {
accum = p -> FromInput(p, wIn, accum, Size);
p ->Lut ->Eval16Fn(wIn, wOut, p -> Lut->Data);
output = p -> ToOutput(p, wOut, output, Size);
}
}
// Auxiliar: Handle precalculated gamut check
static
void TransformOnePixelWithGamutCheck(_cmsTRANSFORM* p,
const cmsUInt16Number wIn[],
cmsUInt16Number wOut[])
{
cmsUInt16Number wOutOfGamut;
p ->GamutCheck ->Eval16Fn(wIn, &wOutOfGamut, p ->GamutCheck ->Data);
if (wOutOfGamut >= 1) {
cmsUInt16Number i;
for (i=0; i < p ->Lut->OutputChannels; i++)
wOut[i] = Alarm[i];
}
else
p ->Lut ->Eval16Fn(wIn, wOut, p -> Lut->Data);
}
// Gamut check, No cach<63>, 16 bits.
static
void PrecalculatedXFORMGamutCheck(_cmsTRANSFORM* p,
const void* in,
void* out, cmsUInt32Number Size)
{
cmsUInt8Number* accum;
cmsUInt8Number* output;
cmsUInt16Number wIn[cmsMAXCHANNELS], wOut[cmsMAXCHANNELS];
cmsUInt32Number i, n;
accum = (cmsUInt8Number*) in;
output = (cmsUInt8Number*) out;
n = Size; // Buffer len
for (i=0; i < n; i++) {
accum = p -> FromInput(p, wIn, accum, Size);
TransformOnePixelWithGamutCheck(p, wIn, wOut);
output = p -> ToOutput(p, wOut, output, Size);
}
}
// No gamut check, Cach<63>, 16 bits,
static
void CachedXFORM(_cmsTRANSFORM* p,
const void* in,
void* out, cmsUInt32Number Size)
{
cmsUInt8Number* accum;
cmsUInt8Number* output;
cmsUInt16Number wIn[cmsMAXCHANNELS], wOut[cmsMAXCHANNELS];
cmsUInt32Number i, n;
cmsUInt16Number CacheIn[cmsMAXCHANNELS], CacheOut[cmsMAXCHANNELS];
accum = (cmsUInt8Number*) in;
output = (cmsUInt8Number*) out;
n = Size; // Buffer len
// Empty buffers for quick memcmp
memset(wIn, 0, sizeof(wIn));
memset(wOut, 0, sizeof(wOut));
LCMS_READ_LOCK(&p ->rwlock);
memmove(CacheIn, p ->CacheIn, sizeof(CacheIn));
memmove(CacheOut, p ->CacheOut, sizeof(CacheOut));
LCMS_UNLOCK(&p ->rwlock);
for (i=0; i < n; i++) {
accum = p -> FromInput(p, wIn, accum, Size);
if (memcmp(wIn, CacheIn, sizeof(CacheIn)) == 0) {
memmove(wOut, CacheOut, sizeof(CacheOut));
}
else {
p ->Lut ->Eval16Fn(wIn, wOut, p -> Lut->Data);
memmove(CacheIn, wIn, sizeof(CacheIn));
memmove(CacheOut, wOut, sizeof(CacheOut));
}
output = p -> ToOutput(p, wOut, output, Size);
}
LCMS_WRITE_LOCK(&p ->rwlock);
memmove(p->CacheIn, CacheIn, sizeof(CacheIn));
memmove(p->CacheOut, CacheOut, sizeof(CacheOut));
LCMS_UNLOCK(&p ->rwlock);
}
// All those nice features together
static
void CachedXFORMGamutCheck(_cmsTRANSFORM* p,
const void* in,
void* out, cmsUInt32Number Size)
{
cmsUInt8Number* accum;
cmsUInt8Number* output;
cmsUInt16Number wIn[cmsMAXCHANNELS], wOut[cmsMAXCHANNELS];
cmsUInt32Number i, n;
cmsUInt16Number CacheIn[cmsMAXCHANNELS], CacheOut[cmsMAXCHANNELS];
accum = (cmsUInt8Number*) in;
output = (cmsUInt8Number*) out;
n = Size; // Buffer len
// Empty buffers for quick memcmp
memset(wIn, 0, sizeof(cmsUInt16Number) * cmsMAXCHANNELS);
memset(wOut, 0, sizeof(cmsUInt16Number) * cmsMAXCHANNELS);
LCMS_READ_LOCK(&p ->rwlock);
memmove(CacheIn, p ->CacheIn, sizeof(cmsUInt16Number) * cmsMAXCHANNELS);
memmove(CacheOut, p ->CacheOut, sizeof(cmsUInt16Number) * cmsMAXCHANNELS);
LCMS_UNLOCK(&p ->rwlock);
for (i=0; i < n; i++) {
accum = p -> FromInput(p, wIn, accum, Size);
if (memcmp(wIn, CacheIn, sizeof(cmsUInt16Number) * cmsMAXCHANNELS) == 0) {
memmove(wOut, CacheOut, sizeof(cmsUInt16Number) * cmsMAXCHANNELS);
}
else {
TransformOnePixelWithGamutCheck(p, wIn, wOut);
memmove(CacheIn, wIn, sizeof(cmsUInt16Number) * cmsMAXCHANNELS);
memmove(CacheOut, wOut, sizeof(cmsUInt16Number) * cmsMAXCHANNELS);
}
output = p -> ToOutput(p, wOut, output, Size);
}
LCMS_WRITE_LOCK(&p ->rwlock);
memmove(p->CacheIn, CacheIn, sizeof(cmsUInt16Number) * cmsMAXCHANNELS);
memmove(p->CacheOut, CacheOut, sizeof(cmsUInt16Number) * cmsMAXCHANNELS);
LCMS_UNLOCK(&p ->rwlock);
}
// Allocate transform struct and set it to defaults
static
_cmsTRANSFORM* AllocEmptyTransform(cmsContext ContextID, cmsUInt32Number InputFormat, cmsUInt32Number OutputFormat, cmsUInt32Number dwFlags)
{
// Allocate needed memory
_cmsTRANSFORM* p = (_cmsTRANSFORM*) _cmsMallocZero(ContextID, sizeof(_cmsTRANSFORM));
if (!p) return NULL;
// Check whatever this is a true floating point transform
if (_cmsFormatterIsFloat(InputFormat) && _cmsFormatterIsFloat(OutputFormat)) {
// Get formatter function always return a valid union, but the contents of this union may be NULL.
p ->FromInputFloat = _cmsGetFormatter(InputFormat, cmsFormatterInput, CMS_PACK_FLAGS_FLOAT).FmtFloat;
p ->ToOutputFloat = _cmsGetFormatter(OutputFormat, cmsFormatterOutput, CMS_PACK_FLAGS_FLOAT).FmtFloat;
dwFlags |= cmsFLAGS_CAN_CHANGE_FORMATTER;
if (p ->FromInputFloat == NULL || p ->ToOutputFloat == NULL) {
cmsSignalError(ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported raster format");
_cmsFree(ContextID, p);
return NULL;
}
// Float transforms don't use cach<63>, always are non-NULL
p ->xform = FloatXFORM;
}
else {
if (InputFormat == 0 && OutputFormat == 0) {
p ->FromInput = p ->ToOutput = NULL;
}
else {
int BytesPerPixelInput;
p ->FromInput = _cmsGetFormatter(InputFormat, cmsFormatterInput, CMS_PACK_FLAGS_16BITS).Fmt16;
p ->ToOutput = _cmsGetFormatter(OutputFormat, cmsFormatterOutput, CMS_PACK_FLAGS_16BITS).Fmt16;
if (p ->FromInput == NULL || p ->ToOutput == NULL) {
cmsSignalError(ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported raster format");
_cmsFree(ContextID, p);
return NULL;
}
BytesPerPixelInput = T_BYTES(p ->InputFormat);
if (BytesPerPixelInput == 0 || BytesPerPixelInput >= 2)
dwFlags |= cmsFLAGS_CAN_CHANGE_FORMATTER;
}
if (dwFlags & cmsFLAGS_NULLTRANSFORM) {
p ->xform = NullXFORM;
}
else {
if (dwFlags & cmsFLAGS_NOCACHE) {
if (dwFlags & cmsFLAGS_GAMUTCHECK)
p ->xform = PrecalculatedXFORMGamutCheck; // Gamut check, no cach<63>
else
p ->xform = PrecalculatedXFORM; // No cach<63>, no gamut check
}
else {
if (dwFlags & cmsFLAGS_GAMUTCHECK)
p ->xform = CachedXFORMGamutCheck; // Gamut check, cach<63>
else
p ->xform = CachedXFORM; // No gamut check, cach<63>
}
}
}
// Create a mutex for shared memory
LCMS_CREATE_LOCK(&p->rwlock);
p ->InputFormat = InputFormat;
p ->OutputFormat = OutputFormat;
p ->dwOriginalFlags = dwFlags;
p ->ContextID = ContextID;
return p;
}
static
cmsBool GetXFormColorSpaces(int nProfiles, cmsHPROFILE hProfiles[], cmsColorSpaceSignature* Input, cmsColorSpaceSignature* Output)
{
cmsColorSpaceSignature ColorSpaceIn, ColorSpaceOut;
cmsColorSpaceSignature PostColorSpace;
int i;
if (hProfiles[0] == NULL) return FALSE;
*Input = PostColorSpace = cmsGetColorSpace(hProfiles[0]);
for (i=0; i < nProfiles; i++) {
cmsHPROFILE hProfile = hProfiles[i];
int lIsInput = (PostColorSpace != cmsSigXYZData) &&
(PostColorSpace != cmsSigLabData);
if (hProfile == NULL) return FALSE;
if (lIsInput) {
ColorSpaceIn = cmsGetColorSpace(hProfile);
ColorSpaceOut = cmsGetPCS(hProfile);
}
else {
ColorSpaceIn = cmsGetPCS(hProfile);
ColorSpaceOut = cmsGetColorSpace(hProfile);
}
PostColorSpace = ColorSpaceOut;
}
*Output = PostColorSpace;
return TRUE;
}
// Check colorspace
static
cmsBool IsProperColorSpace(cmsColorSpaceSignature Check, cmsUInt32Number dwFormat)
{
int Space1 = T_COLORSPACE(dwFormat);
int Space2 = _cmsLCMScolorSpace(Check);
if (Space1 == PT_ANY) return TRUE;
if (Space1 == Space2) return TRUE;
if (Space1 == PT_LabV2 && Space2 == PT_Lab) return TRUE;
if (Space1 == PT_Lab && Space2 == PT_LabV2) return TRUE;
return FALSE;
}
// ----------------------------------------------------------------------------------------------------------------
// New to lcms 2.0 -- have all parameters available.
cmsHTRANSFORM CMSEXPORT cmsCreateExtendedTransform(cmsContext ContextID,
cmsUInt32Number nProfiles, cmsHPROFILE hProfiles[],
cmsBool BPC[],
cmsUInt32Number Intents[],
cmsFloat64Number AdaptationStates[],
cmsHPROFILE hGamutProfile,
cmsUInt32Number nGamutPCSposition,
cmsUInt32Number InputFormat,
cmsUInt32Number OutputFormat,
cmsUInt32Number dwFlags)
{
_cmsTRANSFORM* xform;
cmsBool FloatTransform;
cmsColorSpaceSignature EntryColorSpace;
cmsColorSpaceSignature ExitColorSpace;
cmsPipeline* Lut;
cmsUInt32Number LastIntent = Intents[nProfiles-1];
// If gamut check is requested, make sure we have a gamut profile
if (dwFlags & cmsFLAGS_GAMUTCHECK) {
if (hGamutProfile == NULL) dwFlags &= ~cmsFLAGS_GAMUTCHECK;
}
// On floating point transforms, inhibit optimizations
FloatTransform = (_cmsFormatterIsFloat(InputFormat) && _cmsFormatterIsFloat(OutputFormat));
if (_cmsFormatterIsFloat(InputFormat) || _cmsFormatterIsFloat(OutputFormat))
dwFlags |= cmsFLAGS_NOCACHE;
// Mark entry/exit spaces
if (!GetXFormColorSpaces(nProfiles, hProfiles, &EntryColorSpace, &ExitColorSpace)) {
cmsSignalError(ContextID, cmsERROR_NULL, "NULL input profiles on transform");
return NULL;
}
// Check if proper colorspaces
if (!IsProperColorSpace(EntryColorSpace, InputFormat)) {
cmsSignalError(ContextID, cmsERROR_COLORSPACE_CHECK, "Wrong input color space on transform");
return NULL;
}
if (!IsProperColorSpace(ExitColorSpace, OutputFormat)) {
cmsSignalError(ContextID, cmsERROR_COLORSPACE_CHECK, "Wrong output color space on transform");
return NULL;
}
// Create a pipeline with all transformations
Lut = _cmsLinkProfiles(ContextID, nProfiles, Intents, hProfiles, BPC, AdaptationStates, dwFlags);
if (Lut == NULL) {
cmsSignalError(ContextID, cmsERROR_NOT_SUITABLE, "Couldn't link the profiles");
return NULL;
}
// Optimize the LUT if possible
_cmsOptimizePipeline(&Lut, LastIntent, &InputFormat, &OutputFormat, &dwFlags);
// All seems ok
xform = AllocEmptyTransform(ContextID, InputFormat, OutputFormat, dwFlags);
if (xform == NULL) {
cmsPipelineFree(Lut);
return NULL;
}
// Keep values
xform ->EntryColorSpace = EntryColorSpace;
xform ->ExitColorSpace = ExitColorSpace;
xform ->Lut = Lut;
// Create a gamut check LUT if requested
if (hGamutProfile != NULL && (dwFlags & cmsFLAGS_GAMUTCHECK))
xform ->GamutCheck = _cmsCreateGamutCheckPipeline(ContextID, hProfiles,
BPC, Intents,
AdaptationStates,
nGamutPCSposition,
hGamutProfile);
// Try to read input and output colorant table
if (cmsIsTag(hProfiles[0], cmsSigColorantTableTag)) {
// Input table can only come in this way.
xform ->InputColorant = cmsDupNamedColorList((cmsNAMEDCOLORLIST*) cmsReadTag(hProfiles[0], cmsSigColorantTableTag));
}
// Output is a little bit more complex.
if (cmsGetDeviceClass(hProfiles[nProfiles-1]) == cmsSigLinkClass) {
// This tag may exist only on devicelink profiles.
if (cmsIsTag(hProfiles[nProfiles-1], cmsSigColorantTableOutTag)) {
// It may be NULL if error
xform ->OutputColorant = cmsDupNamedColorList((cmsNAMEDCOLORLIST*) cmsReadTag(hProfiles[nProfiles-1], cmsSigColorantTableOutTag));
}
} else {
if (cmsIsTag(hProfiles[nProfiles-1], cmsSigColorantTableTag)) {
xform -> OutputColorant = cmsDupNamedColorList((cmsNAMEDCOLORLIST*) cmsReadTag(hProfiles[nProfiles-1], cmsSigColorantTableTag));
}
}
// Store the sequence of profiles
if (dwFlags & cmsFLAGS_KEEP_SEQUENCE) {
xform ->Sequence = _cmsCompileProfileSequence(ContextID, nProfiles, hProfiles);
}
else
xform ->Sequence = NULL;
// If this is a cached transform, init first value, which is zero (16 bits only)
if (!(dwFlags & cmsFLAGS_NOCACHE)) {
memset(&xform ->CacheIn, 0, sizeof(xform ->CacheIn));
if (xform ->GamutCheck != NULL) {
TransformOnePixelWithGamutCheck(xform, xform ->CacheIn, xform->CacheOut);
}
else {
xform ->Lut ->Eval16Fn(xform ->CacheIn, xform->CacheOut, xform -> Lut->Data);
}
}
return (cmsHTRANSFORM) xform;
}
// Multiprofile transforms: Gamut check is not available here, as it is unclear from which profile the gamut comes.
cmsHTRANSFORM CMSEXPORT cmsCreateMultiprofileTransformTHR(cmsContext ContextID,
cmsHPROFILE hProfiles[],
cmsUInt32Number nProfiles,
cmsUInt32Number InputFormat,
cmsUInt32Number OutputFormat,
cmsUInt32Number Intent,
cmsUInt32Number dwFlags)
{
cmsUInt32Number i;
cmsBool BPC[256];
cmsUInt32Number Intents[256];
cmsFloat64Number AdaptationStates[256];
if (nProfiles <= 0 || nProfiles > 255) {
cmsSignalError(ContextID, cmsERROR_RANGE, "Wrong number of profiles. 1..255 expected, %d found.", nProfiles);
return NULL;
}
for (i=0; i < nProfiles; i++) {
BPC[i] = dwFlags & cmsFLAGS_BLACKPOINTCOMPENSATION ? TRUE : FALSE;
Intents[i] = Intent;
AdaptationStates[i] = GlobalAdaptationState;
}
return cmsCreateExtendedTransform(ContextID, nProfiles, hProfiles, BPC, Intents, AdaptationStates, NULL, 0, InputFormat, OutputFormat, dwFlags);
}
cmsHTRANSFORM CMSEXPORT cmsCreateMultiprofileTransform(cmsHPROFILE hProfiles[],
cmsUInt32Number nProfiles,
cmsUInt32Number InputFormat,
cmsUInt32Number OutputFormat,
cmsUInt32Number Intent,
cmsUInt32Number dwFlags)
{
if (nProfiles <= 0 || nProfiles > 255) {
cmsSignalError(NULL, cmsERROR_RANGE, "Wrong number of profiles. 1..255 expected, %d found.", nProfiles);
return NULL;
}
return cmsCreateMultiprofileTransformTHR(cmsGetProfileContextID(hProfiles[0]),
hProfiles,
nProfiles,
InputFormat,
OutputFormat,
Intent,
dwFlags);
}
cmsHTRANSFORM CMSEXPORT cmsCreateTransformTHR(cmsContext ContextID,
cmsHPROFILE Input,
cmsUInt32Number InputFormat,
cmsHPROFILE Output,
cmsUInt32Number OutputFormat,
cmsUInt32Number Intent,
cmsUInt32Number dwFlags)
{
cmsHPROFILE hArray[2];
hArray[0] = Input;
hArray[1] = Output;
return cmsCreateMultiprofileTransformTHR(ContextID, hArray, Output == NULL ? 1 : 2, InputFormat, OutputFormat, Intent, dwFlags);
}
CMSAPI cmsHTRANSFORM CMSEXPORT cmsCreateTransform(cmsHPROFILE Input,
cmsUInt32Number InputFormat,
cmsHPROFILE Output,
cmsUInt32Number OutputFormat,
cmsUInt32Number Intent,
cmsUInt32Number dwFlags)
{
return cmsCreateTransformTHR(cmsGetProfileContextID(Input), Input, InputFormat, Output, OutputFormat, Intent, dwFlags);
}
cmsHTRANSFORM CMSEXPORT cmsCreateProofingTransformTHR(cmsContext ContextID,
cmsHPROFILE InputProfile,
cmsUInt32Number InputFormat,
cmsHPROFILE OutputProfile,
cmsUInt32Number OutputFormat,
cmsHPROFILE ProofingProfile,
cmsUInt32Number nIntent,
cmsUInt32Number ProofingIntent,
cmsUInt32Number dwFlags)
{
cmsHPROFILE hArray[4];
cmsUInt32Number Intents[4];
cmsBool BPC[4];
cmsFloat64Number Adaptation[4];
cmsBool DoBPC = (dwFlags & cmsFLAGS_BLACKPOINTCOMPENSATION) ? TRUE : FALSE;
hArray[0] = InputProfile; hArray[1] = ProofingProfile; hArray[2] = ProofingProfile; hArray[3] = OutputProfile;
Intents[0] = nIntent; Intents[1] = nIntent; Intents[2] = INTENT_RELATIVE_COLORIMETRIC; Intents[3] = ProofingIntent;
BPC[0] = DoBPC; BPC[1] = DoBPC; BPC[2] = 0; BPC[3] = 0;
Adaptation[0] = Adaptation[1] = Adaptation[2] = Adaptation[3] = GlobalAdaptationState;
if (!(dwFlags & (cmsFLAGS_SOFTPROOFING|cmsFLAGS_GAMUTCHECK)))
return cmsCreateTransformTHR(ContextID, InputProfile, InputFormat, OutputProfile, OutputFormat, nIntent, dwFlags);
return cmsCreateExtendedTransform(ContextID, 4, hArray, BPC, Intents, Adaptation,
ProofingProfile, 1, InputFormat, OutputFormat, dwFlags);
}
cmsHTRANSFORM CMSEXPORT cmsCreateProofingTransform(cmsHPROFILE InputProfile,
cmsUInt32Number InputFormat,
cmsHPROFILE OutputProfile,
cmsUInt32Number OutputFormat,
cmsHPROFILE ProofingProfile,
cmsUInt32Number nIntent,
cmsUInt32Number ProofingIntent,
cmsUInt32Number dwFlags)
{
return cmsCreateProofingTransformTHR(cmsGetProfileContextID(InputProfile),
InputProfile,
InputFormat,
OutputProfile,
OutputFormat,
ProofingProfile,
nIntent,
ProofingIntent,
dwFlags);
}
// Grab the ContextID from an open transform. Returns NULL if a NULL transform is passed
cmsContext CMSEXPORT cmsGetTransformContextID(cmsHTRANSFORM hTransform)
{
_cmsTRANSFORM* xform = (_cmsTRANSFORM*) hTransform;
if (xform == NULL) return NULL;
return xform -> ContextID;
}
// For backwards compatibility
cmsBool CMSEXPORT cmsChangeBuffersFormat(cmsHTRANSFORM hTransform,
cmsUInt32Number InputFormat,
cmsUInt32Number OutputFormat)
{
_cmsTRANSFORM* xform = (_cmsTRANSFORM*) hTransform;
cmsFormatter16 FromInput, ToOutput;
cmsUInt32Number BytesPerPixelInput;
// We only can afford to change formatters if previous transform is at least 16 bits
BytesPerPixelInput = T_BYTES(xform ->InputFormat);
if (!(xform ->dwOriginalFlags & cmsFLAGS_CAN_CHANGE_FORMATTER)) {
cmsSignalError(xform ->ContextID, cmsERROR_NOT_SUITABLE, "cmsChangeBuffersFormat works only on transforms created originally with at least 16 bits of precision");
return FALSE;
}
FromInput = _cmsGetFormatter(InputFormat, cmsFormatterInput, CMS_PACK_FLAGS_16BITS).Fmt16;
ToOutput = _cmsGetFormatter(OutputFormat, cmsFormatterOutput, CMS_PACK_FLAGS_16BITS).Fmt16;
if (FromInput == NULL || ToOutput == NULL) {
cmsSignalError(xform -> ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported raster format");
return FALSE;
}
xform ->InputFormat = InputFormat;
xform ->OutputFormat = OutputFormat;
xform ->FromInput = FromInput;
xform ->ToOutput = ToOutput;
return TRUE;
}
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