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authorTom Sepez <tsepez@chromium.org>2015-06-17 11:05:02 -0700
committerTom Sepez <tsepez@chromium.org>2015-06-17 11:05:02 -0700
commit8be557542973c786d1024a7bfb300df230f00464 (patch)
tree128ced2e83deea3920b043404336bc7ca9b0d1ef /third_party/lcms2-2.6/src/cmsxform.c
parentb7d358b498800e4c240d381fa6f098af17a4d95b (diff)
downloadpdfium-8be557542973c786d1024a7bfb300df230f00464.tar.xz
Merge to XFA: Move lcms2 into third_party
Original Review URL: https://codereview.chromium.org/1181943008. TBR=thestig@chromium.org Review URL: https://codereview.chromium.org/1187273006.
Diffstat (limited to 'third_party/lcms2-2.6/src/cmsxform.c')
-rw-r--r--third_party/lcms2-2.6/src/cmsxform.c1132
1 files changed, 1132 insertions, 0 deletions
diff --git a/third_party/lcms2-2.6/src/cmsxform.c b/third_party/lcms2-2.6/src/cmsxform.c
new file mode 100644
index 0000000000..eddb9bd02c
--- /dev/null
+++ b/third_party/lcms2-2.6/src/cmsxform.c
@@ -0,0 +1,1132 @@
+//---------------------------------------------------------------------------------
+//
+// Little Color Management System
+// Copyright (c) 1998-2014 Marti Maria Saguer
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the Software
+// is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+//---------------------------------------------------------------------------------
+//
+
+#include "lcms2_internal.h"
+
+// Transformations stuff
+// -----------------------------------------------------------------------
+
+#define DEFAULT_OBSERVER_ADAPTATION_STATE 1.0
+
+// The Context0 observer adaptation state.
+_cmsAdaptationStateChunkType _cmsAdaptationStateChunk = { DEFAULT_OBSERVER_ADAPTATION_STATE };
+
+// Init and duplicate observer adaptation state
+void _cmsAllocAdaptationStateChunk(struct _cmsContext_struct* ctx,
+ const struct _cmsContext_struct* src)
+{
+ static _cmsAdaptationStateChunkType AdaptationStateChunk = { DEFAULT_OBSERVER_ADAPTATION_STATE };
+ void* from;
+
+ if (src != NULL) {
+ from = src ->chunks[AdaptationStateContext];
+ }
+ else {
+ from = &AdaptationStateChunk;
+ }
+
+ ctx ->chunks[AdaptationStateContext] = _cmsSubAllocDup(ctx ->MemPool, from, sizeof(_cmsAdaptationStateChunkType));
+}
+
+
+// Sets adaptation state for absolute colorimetric intent in the given context. Adaptation state applies on all
+// but cmsCreateExtendedTransformTHR(). Little CMS can handle incomplete adaptation states.
+cmsFloat64Number CMSEXPORT cmsSetAdaptationStateTHR(cmsContext ContextID, cmsFloat64Number d)
+{
+ cmsFloat64Number prev;
+ _cmsAdaptationStateChunkType* ptr = (_cmsAdaptationStateChunkType*) _cmsContextGetClientChunk(ContextID, AdaptationStateContext);
+
+ // Get previous value for return
+ prev = ptr ->AdaptationState;
+
+ // Set the value if d is positive or zero
+ if (d >= 0.0) {
+
+ ptr ->AdaptationState = d;
+ }
+
+ // Always return previous value
+ return prev;
+}
+
+
+// The adaptation state may be defaulted by this function. If you don't like it, use the extended transform routine
+cmsFloat64Number CMSEXPORT cmsSetAdaptationState(cmsFloat64Number d)
+{
+ return cmsSetAdaptationStateTHR(NULL, d);
+}
+
+// -----------------------------------------------------------------------
+
+// Alarm codes for 16-bit transformations, because the fixed range of containers there are
+// no values left to mark out of gamut.
+
+#define DEFAULT_ALARM_CODES_VALUE {0x7F00, 0x7F00, 0x7F00, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
+
+_cmsAlarmCodesChunkType _cmsAlarmCodesChunk = { DEFAULT_ALARM_CODES_VALUE };
+
+// Sets the codes used to mark out-out-gamut on Proofing transforms for a given context. Values are meant to be
+// encoded in 16 bits.
+void CMSEXPORT cmsSetAlarmCodesTHR(cmsContext ContextID, const cmsUInt16Number AlarmCodesP[cmsMAXCHANNELS])
+{
+ _cmsAlarmCodesChunkType* ContextAlarmCodes = (_cmsAlarmCodesChunkType*) _cmsContextGetClientChunk(ContextID, AlarmCodesContext);
+
+ _cmsAssert(ContextAlarmCodes != NULL); // Can't happen
+
+ memcpy(ContextAlarmCodes->AlarmCodes, AlarmCodesP, sizeof(ContextAlarmCodes->AlarmCodes));
+}
+
+// Gets the current codes used to mark out-out-gamut on Proofing transforms for the given context.
+// Values are meant to be encoded in 16 bits.
+void CMSEXPORT cmsGetAlarmCodesTHR(cmsContext ContextID, cmsUInt16Number AlarmCodesP[cmsMAXCHANNELS])
+{
+ _cmsAlarmCodesChunkType* ContextAlarmCodes = (_cmsAlarmCodesChunkType*) _cmsContextGetClientChunk(ContextID, AlarmCodesContext);
+
+ _cmsAssert(ContextAlarmCodes != NULL); // Can't happen
+
+ memcpy(AlarmCodesP, ContextAlarmCodes->AlarmCodes, sizeof(ContextAlarmCodes->AlarmCodes));
+}
+
+void CMSEXPORT cmsSetAlarmCodes(const cmsUInt16Number NewAlarm[cmsMAXCHANNELS])
+{
+ _cmsAssert(NewAlarm != NULL);
+
+ cmsSetAlarmCodesTHR(NULL, NewAlarm);
+}
+
+void CMSEXPORT cmsGetAlarmCodes(cmsUInt16Number OldAlarm[cmsMAXCHANNELS])
+{
+ _cmsAssert(OldAlarm != NULL);
+ cmsGetAlarmCodesTHR(NULL, OldAlarm);
+}
+
+
+// Init and duplicate alarm codes
+void _cmsAllocAlarmCodesChunk(struct _cmsContext_struct* ctx,
+ const struct _cmsContext_struct* src)
+{
+ static _cmsAlarmCodesChunkType AlarmCodesChunk = { DEFAULT_ALARM_CODES_VALUE };
+ void* from;
+
+ if (src != NULL) {
+ from = src ->chunks[AlarmCodesContext];
+ }
+ else {
+ from = &AlarmCodesChunk;
+ }
+
+ ctx ->chunks[AlarmCodesContext] = _cmsSubAllocDup(ctx ->MemPool, from, sizeof(_cmsAlarmCodesChunkType));
+}
+
+// -----------------------------------------------------------------------
+
+// Get rid of transform resources
+void CMSEXPORT cmsDeleteTransform(cmsHTRANSFORM hTransform)
+{
+ _cmsTRANSFORM* p = (_cmsTRANSFORM*) hTransform;
+
+ _cmsAssert(p != NULL);
+
+ if (p -> GamutCheck)
+ cmsPipelineFree(p -> GamutCheck);
+
+ if (p -> Lut)
+ cmsPipelineFree(p -> Lut);
+
+ if (p ->InputColorant)
+ cmsFreeNamedColorList(p ->InputColorant);
+
+ if (p -> OutputColorant)
+ cmsFreeNamedColorList(p ->OutputColorant);
+
+ if (p ->Sequence)
+ cmsFreeProfileSequenceDescription(p ->Sequence);
+
+ if (p ->UserData)
+ p ->FreeUserData(p ->ContextID, p ->UserData);
+
+ _cmsFree(p ->ContextID, (void *) p);
+}
+
+// Apply transform.
+void CMSEXPORT cmsDoTransform(cmsHTRANSFORM Transform,
+ const void* InputBuffer,
+ void* OutputBuffer,
+ cmsUInt32Number Size)
+
+{
+ _cmsTRANSFORM* p = (_cmsTRANSFORM*) Transform;
+
+ p -> xform(p, InputBuffer, OutputBuffer, Size, Size);
+}
+
+
+// Apply transform.
+void CMSEXPORT cmsDoTransformStride(cmsHTRANSFORM Transform,
+ const void* InputBuffer,
+ void* OutputBuffer,
+ cmsUInt32Number Size, cmsUInt32Number Stride)
+
+{
+ _cmsTRANSFORM* p = (_cmsTRANSFORM*) Transform;
+
+ p -> xform(p, InputBuffer, OutputBuffer, Size, Stride);
+}
+
+
+// Transform routines ----------------------------------------------------------------------------------------------------------
+
+// Float xform converts floats. Since there are no performance issues, one routine does all job, including gamut check.
+// Note that because extended range, we can use a -1.0 value for out of gamut in this case.
+static
+void FloatXFORM(_cmsTRANSFORM* p,
+ const void* in,
+ void* out, cmsUInt32Number Size, cmsUInt32Number Stride)
+{
+ 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, Stride);
+
+ // 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, Stride);
+ }
+}
+
+
+static
+void NullFloatXFORM(_cmsTRANSFORM* p,
+ const void* in,
+ void* out,
+ cmsUInt32Number Size,
+ cmsUInt32Number Stride)
+{
+ cmsUInt8Number* accum;
+ cmsUInt8Number* output;
+ cmsFloat32Number fIn[cmsMAXCHANNELS];
+ cmsUInt32Number i, n;
+
+ accum = (cmsUInt8Number*) in;
+ output = (cmsUInt8Number*) out;
+ n = Size;
+
+ for (i=0; i < n; i++) {
+
+ accum = p -> FromInputFloat(p, fIn, accum, Stride);
+ output = p -> ToOutputFloat(p, fIn, output, Stride);
+ }
+}
+
+// 16 bit precision -----------------------------------------------------------------------------------------------------------
+
+// Null transformation, only applies formatters. No cach?static
+void NullXFORM(_cmsTRANSFORM* p,
+ const void* in,
+ void* out, cmsUInt32Number Size,
+ cmsUInt32Number Stride)
+{
+ 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, Stride);
+ output = p -> ToOutput(p, wIn, output, Stride);
+ }
+}
+
+
+// No gamut check, no cache, 16 bits
+static
+void PrecalculatedXFORM(_cmsTRANSFORM* p,
+ const void* in,
+ void* out, cmsUInt32Number Size, cmsUInt32Number Stride)
+{
+ 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, Stride);
+ p ->Lut ->Eval16Fn(wIn, wOut, p -> Lut->Data);
+ output = p -> ToOutput(p, wOut, output, Stride);
+ }
+}
+
+
+// Auxiliar: Handle precalculated gamut check. The retrieval of context may be alittle bit slow, but this function is not critical.
+static
+void TransformOnePixelWithGamutCheck(_cmsTRANSFORM* p,
+ const cmsUInt16Number wIn[],
+ cmsUInt16Number wOut[])
+{
+ cmsUInt16Number wOutOfGamut;
+
+ p ->GamutCheck ->Eval16Fn(wIn, &wOutOfGamut, p ->GamutCheck ->Data);
+ if (wOutOfGamut >= 1) {
+
+ cmsUInt16Number i;
+ _cmsAlarmCodesChunkType* ContextAlarmCodes = (_cmsAlarmCodesChunkType*) _cmsContextGetClientChunk(p->ContextID, AlarmCodesContext);
+
+ for (i=0; i < p ->Lut->OutputChannels; i++) {
+
+ wOut[i] = ContextAlarmCodes ->AlarmCodes[i];
+ }
+ }
+ else
+ p ->Lut ->Eval16Fn(wIn, wOut, p -> Lut->Data);
+}
+
+// Gamut check, No cach? 16 bits.
+static
+void PrecalculatedXFORMGamutCheck(_cmsTRANSFORM* p,
+ const void* in,
+ void* out, cmsUInt32Number Size, cmsUInt32Number Stride)
+{
+ 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, Stride);
+ TransformOnePixelWithGamutCheck(p, wIn, wOut);
+ output = p -> ToOutput(p, wOut, output, Stride);
+ }
+}
+
+
+// No gamut check, Cach? 16 bits,
+static
+void CachedXFORM(_cmsTRANSFORM* p,
+ const void* in,
+ void* out, cmsUInt32Number Size, cmsUInt32Number Stride)
+{
+ cmsUInt8Number* accum;
+ cmsUInt8Number* output;
+ cmsUInt16Number wIn[cmsMAXCHANNELS], wOut[cmsMAXCHANNELS];
+ cmsUInt32Number i, n;
+ _cmsCACHE Cache;
+
+ 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));
+
+ // Get copy of zero cache
+ memcpy(&Cache, &p ->Cache, sizeof(Cache));
+
+ for (i=0; i < n; i++) {
+
+ accum = p -> FromInput(p, wIn, accum, Stride);
+
+ if (memcmp(wIn, Cache.CacheIn, sizeof(Cache.CacheIn)) == 0) {
+
+ memcpy(wOut, Cache.CacheOut, sizeof(Cache.CacheOut));
+ }
+ else {
+
+ p ->Lut ->Eval16Fn(wIn, wOut, p -> Lut->Data);
+
+ memcpy(Cache.CacheIn, wIn, sizeof(Cache.CacheIn));
+ memcpy(Cache.CacheOut, wOut, sizeof(Cache.CacheOut));
+ }
+
+ output = p -> ToOutput(p, wOut, output, Stride);
+ }
+
+}
+
+
+// All those nice features together
+static
+void CachedXFORMGamutCheck(_cmsTRANSFORM* p,
+ const void* in,
+ void* out, cmsUInt32Number Size, cmsUInt32Number Stride)
+{
+ cmsUInt8Number* accum;
+ cmsUInt8Number* output;
+ cmsUInt16Number wIn[cmsMAXCHANNELS], wOut[cmsMAXCHANNELS];
+ cmsUInt32Number i, n;
+ _cmsCACHE Cache;
+
+ 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);
+
+ // Get copy of zero cache
+ memcpy(&Cache, &p ->Cache, sizeof(Cache));
+
+ for (i=0; i < n; i++) {
+
+ accum = p -> FromInput(p, wIn, accum, Stride);
+
+ if (memcmp(wIn, Cache.CacheIn, sizeof(Cache.CacheIn)) == 0) {
+ memcpy(wOut, Cache.CacheOut, sizeof(Cache.CacheOut));
+ }
+ else {
+ TransformOnePixelWithGamutCheck(p, wIn, wOut);
+ memcpy(Cache.CacheIn, wIn, sizeof(Cache.CacheIn));
+ memcpy(Cache.CacheOut, wOut, sizeof(Cache.CacheOut));
+ }
+
+ output = p -> ToOutput(p, wOut, output, Stride);
+ }
+
+}
+
+// -------------------------------------------------------------------------------------------------------------
+
+// List of used-defined transform factories
+typedef struct _cmsTransformCollection_st {
+
+ _cmsTransformFactory Factory;
+ struct _cmsTransformCollection_st *Next;
+
+} _cmsTransformCollection;
+
+// The linked list head
+_cmsTransformPluginChunkType _cmsTransformPluginChunk = { NULL };
+
+
+// Duplicates the zone of memory used by the plug-in in the new context
+static
+void DupPluginTransformList(struct _cmsContext_struct* ctx,
+ const struct _cmsContext_struct* src)
+{
+ _cmsTransformPluginChunkType newHead = { NULL };
+ _cmsTransformCollection* entry;
+ _cmsTransformCollection* Anterior = NULL;
+ _cmsTransformPluginChunkType* head = (_cmsTransformPluginChunkType*) src->chunks[TransformPlugin];
+
+ // Walk the list copying all nodes
+ for (entry = head->TransformCollection;
+ entry != NULL;
+ entry = entry ->Next) {
+
+ _cmsTransformCollection *newEntry = ( _cmsTransformCollection *) _cmsSubAllocDup(ctx ->MemPool, entry, sizeof(_cmsTransformCollection));
+
+ if (newEntry == NULL)
+ return;
+
+ // We want to keep the linked list order, so this is a little bit tricky
+ newEntry -> Next = NULL;
+ if (Anterior)
+ Anterior -> Next = newEntry;
+
+ Anterior = newEntry;
+
+ if (newHead.TransformCollection == NULL)
+ newHead.TransformCollection = newEntry;
+ }
+
+ ctx ->chunks[TransformPlugin] = _cmsSubAllocDup(ctx->MemPool, &newHead, sizeof(_cmsTransformPluginChunkType));
+}
+
+void _cmsAllocTransformPluginChunk(struct _cmsContext_struct* ctx,
+ const struct _cmsContext_struct* src)
+{
+ if (src != NULL) {
+
+ // Copy all linked list
+ DupPluginTransformList(ctx, src);
+ }
+ else {
+ static _cmsTransformPluginChunkType TransformPluginChunkType = { NULL };
+ ctx ->chunks[TransformPlugin] = _cmsSubAllocDup(ctx ->MemPool, &TransformPluginChunkType, sizeof(_cmsTransformPluginChunkType));
+ }
+}
+
+
+
+// Register new ways to transform
+cmsBool _cmsRegisterTransformPlugin(cmsContext ContextID, cmsPluginBase* Data)
+{
+ cmsPluginTransform* Plugin = (cmsPluginTransform*) Data;
+ _cmsTransformCollection* fl;
+ _cmsTransformPluginChunkType* ctx = ( _cmsTransformPluginChunkType*) _cmsContextGetClientChunk(ContextID,TransformPlugin);
+
+ if (Data == NULL) {
+
+ // Free the chain. Memory is safely freed at exit
+ ctx->TransformCollection = NULL;
+ return TRUE;
+ }
+
+ // Factory callback is required
+ if (Plugin ->Factory == NULL) return FALSE;
+
+
+ fl = (_cmsTransformCollection*) _cmsPluginMalloc(ContextID, sizeof(_cmsTransformCollection));
+ if (fl == NULL) return FALSE;
+
+ // Copy the parameters
+ fl ->Factory = Plugin ->Factory;
+
+ // Keep linked list
+ fl ->Next = ctx->TransformCollection;
+ ctx->TransformCollection = fl;
+
+ // All is ok
+ return TRUE;
+}
+
+
+void CMSEXPORT _cmsSetTransformUserData(struct _cmstransform_struct *CMMcargo, void* ptr, _cmsFreeUserDataFn FreePrivateDataFn)
+{
+ _cmsAssert(CMMcargo != NULL);
+ CMMcargo ->UserData = ptr;
+ CMMcargo ->FreeUserData = FreePrivateDataFn;
+}
+
+// returns the pointer defined by the plug-in to store private data
+void * CMSEXPORT _cmsGetTransformUserData(struct _cmstransform_struct *CMMcargo)
+{
+ _cmsAssert(CMMcargo != NULL);
+ return CMMcargo ->UserData;
+}
+
+// returns the current formatters
+void CMSEXPORT _cmsGetTransformFormatters16(struct _cmstransform_struct *CMMcargo, cmsFormatter16* FromInput, cmsFormatter16* ToOutput)
+{
+ _cmsAssert(CMMcargo != NULL);
+ if (FromInput) *FromInput = CMMcargo ->FromInput;
+ if (ToOutput) *ToOutput = CMMcargo ->ToOutput;
+}
+
+void CMSEXPORT _cmsGetTransformFormattersFloat(struct _cmstransform_struct *CMMcargo, cmsFormatterFloat* FromInput, cmsFormatterFloat* ToOutput)
+{
+ _cmsAssert(CMMcargo != NULL);
+ if (FromInput) *FromInput = CMMcargo ->FromInputFloat;
+ if (ToOutput) *ToOutput = CMMcargo ->ToOutputFloat;
+}
+
+
+// Allocate transform struct and set it to defaults. Ask the optimization plug-in about if those formats are proper
+// for separated transforms. If this is the case,
+static
+_cmsTRANSFORM* AllocEmptyTransform(cmsContext ContextID, cmsPipeline* lut,
+ cmsUInt32Number Intent, cmsUInt32Number* InputFormat, cmsUInt32Number* OutputFormat, cmsUInt32Number* dwFlags)
+{
+ _cmsTransformPluginChunkType* ctx = ( _cmsTransformPluginChunkType*) _cmsContextGetClientChunk(ContextID, TransformPlugin);
+ _cmsTransformCollection* Plugin;
+
+ // Allocate needed memory
+ _cmsTRANSFORM* p = (_cmsTRANSFORM*) _cmsMallocZero(ContextID, sizeof(_cmsTRANSFORM));
+ if (!p) return NULL;
+
+ // Store the proposed pipeline
+ p ->Lut = lut;
+
+ // Let's see if any plug-in want to do the transform by itself
+ for (Plugin = ctx ->TransformCollection;
+ Plugin != NULL;
+ Plugin = Plugin ->Next) {
+
+ if (Plugin ->Factory(&p->xform, &p->UserData, &p ->FreeUserData, &p ->Lut, InputFormat, OutputFormat, dwFlags)) {
+
+ // Last plugin in the declaration order takes control. We just keep
+ // the original parameters as a logging.
+ // Note that cmsFLAGS_CAN_CHANGE_FORMATTER is not set, so by default
+ // an optimized transform is not reusable. The plug-in can, however, change
+ // the flags and make it suitable.
+
+ p ->ContextID = ContextID;
+ p ->InputFormat = *InputFormat;
+ p ->OutputFormat = *OutputFormat;
+ p ->dwOriginalFlags = *dwFlags;
+
+ // Fill the formatters just in case the optimized routine is interested.
+ // No error is thrown if the formatter doesn't exist. It is up to the optimization
+ // factory to decide what to do in those cases.
+ p ->FromInput = _cmsGetFormatter(ContextID, *InputFormat, cmsFormatterInput, CMS_PACK_FLAGS_16BITS).Fmt16;
+ p ->ToOutput = _cmsGetFormatter(ContextID, *OutputFormat, cmsFormatterOutput, CMS_PACK_FLAGS_16BITS).Fmt16;
+ p ->FromInputFloat = _cmsGetFormatter(ContextID, *InputFormat, cmsFormatterInput, CMS_PACK_FLAGS_FLOAT).FmtFloat;
+ p ->ToOutputFloat = _cmsGetFormatter(ContextID, *OutputFormat, cmsFormatterOutput, CMS_PACK_FLAGS_FLOAT).FmtFloat;
+
+ return p;
+ }
+ }
+
+ // Not suitable for the transform plug-in, let's check the pipeline plug-in
+ if (p ->Lut != NULL)
+ _cmsOptimizePipeline(ContextID, &p->Lut, Intent, InputFormat, OutputFormat, dwFlags);
+
+ // Check whatever this is a true floating point transform
+ if (_cmsFormatterIsFloat(*InputFormat) && _cmsFormatterIsFloat(*OutputFormat)) {
+
+ // Get formatter function always return a valid union, but the contents of this union may be NULL.
+ p ->FromInputFloat = _cmsGetFormatter(ContextID, *InputFormat, cmsFormatterInput, CMS_PACK_FLAGS_FLOAT).FmtFloat;
+ p ->ToOutputFloat = _cmsGetFormatter(ContextID, *OutputFormat, cmsFormatterOutput, CMS_PACK_FLAGS_FLOAT).FmtFloat;
+ *dwFlags |= cmsFLAGS_CAN_CHANGE_FORMATTER;
+
+ if (p ->FromInputFloat == NULL || p ->ToOutputFloat == NULL) {
+
+ cmsSignalError(ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported raster format");
+ _cmsFree(ContextID, p);
+ return NULL;
+ }
+
+ if (*dwFlags & cmsFLAGS_NULLTRANSFORM) {
+
+ p ->xform = NullFloatXFORM;
+ }
+ else {
+ // Float transforms don't use cach? always are non-NULL
+ p ->xform = FloatXFORM;
+ }
+
+ }
+ else {
+
+ if (*InputFormat == 0 && *OutputFormat == 0) {
+ p ->FromInput = p ->ToOutput = NULL;
+ *dwFlags |= cmsFLAGS_CAN_CHANGE_FORMATTER;
+ }
+ else {
+
+ int BytesPerPixelInput;
+
+ p ->FromInput = _cmsGetFormatter(ContextID, *InputFormat, cmsFormatterInput, CMS_PACK_FLAGS_16BITS).Fmt16;
+ p ->ToOutput = _cmsGetFormatter(ContextID, *OutputFormat, cmsFormatterOutput, CMS_PACK_FLAGS_16BITS).Fmt16;
+
+ if (p ->FromInput == NULL || p ->ToOutput == NULL) {
+
+ cmsSignalError(ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported raster format");
+ _cmsFree(ContextID, p);
+ return NULL;
+ }
+
+ BytesPerPixelInput = T_BYTES(p ->InputFormat);
+ if (BytesPerPixelInput == 0 || BytesPerPixelInput >= 2)
+ *dwFlags |= cmsFLAGS_CAN_CHANGE_FORMATTER;
+
+ }
+
+ if (*dwFlags & cmsFLAGS_NULLTRANSFORM) {
+
+ p ->xform = NullXFORM;
+ }
+ else {
+ if (*dwFlags & cmsFLAGS_NOCACHE) {
+
+ if (*dwFlags & cmsFLAGS_GAMUTCHECK)
+ p ->xform = PrecalculatedXFORMGamutCheck; // Gamut check, no cach? else
+ p ->xform = PrecalculatedXFORM; // No cach? no gamut check
+ }
+ else {
+
+ if (*dwFlags & cmsFLAGS_GAMUTCHECK)
+ p ->xform = CachedXFORMGamutCheck; // Gamut check, cach? else
+ p ->xform = CachedXFORM; // No gamut check, cach?
+ }
+ }
+ }
+
+ p ->InputFormat = *InputFormat;
+ p ->OutputFormat = *OutputFormat;
+ p ->dwOriginalFlags = *dwFlags;
+ p ->ContextID = ContextID;
+ p ->UserData = NULL;
+ return p;
+}
+
+static
+cmsBool GetXFormColorSpaces(int nProfiles, cmsHPROFILE hProfiles[], cmsColorSpaceSignature* Input, cmsColorSpaceSignature* Output)
+{
+ cmsColorSpaceSignature ColorSpaceIn, ColorSpaceOut;
+ cmsColorSpaceSignature PostColorSpace;
+ int i;
+
+ if (nProfiles <= 0) return FALSE;
+ if (hProfiles[0] == NULL) return FALSE;
+
+ *Input = PostColorSpace = cmsGetColorSpace(hProfiles[0]);
+
+ for (i=0; i < nProfiles; i++) {
+
+ cmsProfileClassSignature cls;
+ cmsHPROFILE hProfile = hProfiles[i];
+
+ int lIsInput = (PostColorSpace != cmsSigXYZData) &&
+ (PostColorSpace != cmsSigLabData);
+
+ if (hProfile == NULL) return FALSE;
+
+ cls = cmsGetDeviceClass(hProfile);
+
+ if (cls == cmsSigNamedColorClass) {
+
+ ColorSpaceIn = cmsSig1colorData;
+ ColorSpaceOut = (nProfiles > 1) ? cmsGetPCS(hProfile) : cmsGetColorSpace(hProfile);
+ }
+ else
+ if (lIsInput || (cls == cmsSigLinkClass)) {
+
+ ColorSpaceIn = cmsGetColorSpace(hProfile);
+ ColorSpaceOut = cmsGetPCS(hProfile);
+ }
+ else
+ {
+ ColorSpaceIn = cmsGetPCS(hProfile);
+ ColorSpaceOut = cmsGetColorSpace(hProfile);
+ }
+
+ if (i==0)
+ *Input = ColorSpaceIn;
+
+ PostColorSpace = ColorSpaceOut;
+ }
+
+ *Output = PostColorSpace;
+
+ return TRUE;
+}
+
+// Check colorspace
+static
+cmsBool IsProperColorSpace(cmsColorSpaceSignature Check, cmsUInt32Number dwFormat)
+{
+ int Space1 = T_COLORSPACE(dwFormat);
+ int Space2 = _cmsLCMScolorSpace(Check);
+
+ if (Space1 == PT_ANY) return TRUE;
+ if (Space1 == Space2) return TRUE;
+
+ if (Space1 == PT_LabV2 && Space2 == PT_Lab) return TRUE;
+ if (Space1 == PT_Lab && Space2 == PT_LabV2) return TRUE;
+
+ return FALSE;
+}
+
+// ----------------------------------------------------------------------------------------------------------------
+
+static
+void SetWhitePoint(cmsCIEXYZ* wtPt, const cmsCIEXYZ* src)
+{
+ if (src == NULL) {
+ wtPt ->X = cmsD50X;
+ wtPt ->Y = cmsD50Y;
+ wtPt ->Z = cmsD50Z;
+ }
+ else {
+ wtPt ->X = src->X;
+ wtPt ->Y = src->Y;
+ wtPt ->Z = src->Z;
+ }
+
+}
+
+// New to lcms 2.0 -- have all parameters available.
+cmsHTRANSFORM CMSEXPORT cmsCreateExtendedTransform(cmsContext ContextID,
+ cmsUInt32Number nProfiles, cmsHPROFILE hProfiles[],
+ cmsBool BPC[],
+ cmsUInt32Number Intents[],
+ cmsFloat64Number AdaptationStates[],
+ cmsHPROFILE hGamutProfile,
+ cmsUInt32Number nGamutPCSposition,
+ cmsUInt32Number InputFormat,
+ cmsUInt32Number OutputFormat,
+ cmsUInt32Number dwFlags)
+{
+ _cmsTRANSFORM* xform;
+ cmsColorSpaceSignature EntryColorSpace;
+ cmsColorSpaceSignature ExitColorSpace;
+ cmsPipeline* Lut;
+ cmsUInt32Number LastIntent = Intents[nProfiles-1];
+
+ // If it is a fake transform
+ if (dwFlags & cmsFLAGS_NULLTRANSFORM)
+ {
+ return AllocEmptyTransform(ContextID, NULL, INTENT_PERCEPTUAL, &InputFormat, &OutputFormat, &dwFlags);
+ }
+
+ // If gamut check is requested, make sure we have a gamut profile
+ if (dwFlags & cmsFLAGS_GAMUTCHECK) {
+ if (hGamutProfile == NULL) dwFlags &= ~cmsFLAGS_GAMUTCHECK;
+ }
+
+ // On floating point transforms, inhibit cache
+ if (_cmsFormatterIsFloat(InputFormat) || _cmsFormatterIsFloat(OutputFormat))
+ dwFlags |= cmsFLAGS_NOCACHE;
+
+ // Mark entry/exit spaces
+ if (!GetXFormColorSpaces(nProfiles, hProfiles, &EntryColorSpace, &ExitColorSpace)) {
+ cmsSignalError(ContextID, cmsERROR_NULL, "NULL input profiles on transform");
+ return NULL;
+ }
+
+ // Check if proper colorspaces
+ if (!IsProperColorSpace(EntryColorSpace, InputFormat)) {
+ cmsSignalError(ContextID, cmsERROR_COLORSPACE_CHECK, "Wrong input color space on transform");
+ return NULL;
+ }
+
+ if (!IsProperColorSpace(ExitColorSpace, OutputFormat)) {
+ cmsSignalError(ContextID, cmsERROR_COLORSPACE_CHECK, "Wrong output color space on transform");
+ return NULL;
+ }
+
+ // Create a pipeline with all transformations
+ Lut = _cmsLinkProfiles(ContextID, nProfiles, Intents, hProfiles, BPC, AdaptationStates, dwFlags);
+ if (Lut == NULL) {
+ cmsSignalError(ContextID, cmsERROR_NOT_SUITABLE, "Couldn't link the profiles");
+ return NULL;
+ }
+
+ // Check channel count
+ if ((cmsChannelsOf(EntryColorSpace) != cmsPipelineInputChannels(Lut)) ||
+ (cmsChannelsOf(ExitColorSpace) != cmsPipelineOutputChannels(Lut))) {
+ cmsPipelineFree(Lut);
+ cmsSignalError(ContextID, cmsERROR_NOT_SUITABLE, "Channel count doesn't match. Profile is corrupted");
+ return NULL;
+ }
+
+
+ // All seems ok
+ xform = AllocEmptyTransform(ContextID, Lut, LastIntent, &InputFormat, &OutputFormat, &dwFlags);
+ if (xform == NULL) {
+ return NULL;
+ }
+
+ // Keep values
+ xform ->EntryColorSpace = EntryColorSpace;
+ xform ->ExitColorSpace = ExitColorSpace;
+ xform ->RenderingIntent = Intents[nProfiles-1];
+
+ // Take white points
+ SetWhitePoint(&xform->EntryWhitePoint, (cmsCIEXYZ*) cmsReadTag(hProfiles[0], cmsSigMediaWhitePointTag));
+ SetWhitePoint(&xform->ExitWhitePoint, (cmsCIEXYZ*) cmsReadTag(hProfiles[nProfiles-1], cmsSigMediaWhitePointTag));
+
+
+ // Create a gamut check LUT if requested
+ if (hGamutProfile != NULL && (dwFlags & cmsFLAGS_GAMUTCHECK))
+ xform ->GamutCheck = _cmsCreateGamutCheckPipeline(ContextID, hProfiles,
+ BPC, Intents,
+ AdaptationStates,
+ nGamutPCSposition,
+ hGamutProfile);
+
+
+ // Try to read input and output colorant table
+ if (cmsIsTag(hProfiles[0], cmsSigColorantTableTag)) {
+
+ // Input table can only come in this way.
+ xform ->InputColorant = cmsDupNamedColorList((cmsNAMEDCOLORLIST*) cmsReadTag(hProfiles[0], cmsSigColorantTableTag));
+ }
+
+ // Output is a little bit more complex.
+ if (cmsGetDeviceClass(hProfiles[nProfiles-1]) == cmsSigLinkClass) {
+
+ // This tag may exist only on devicelink profiles.
+ if (cmsIsTag(hProfiles[nProfiles-1], cmsSigColorantTableOutTag)) {
+
+ // It may be NULL if error
+ xform ->OutputColorant = cmsDupNamedColorList((cmsNAMEDCOLORLIST*) cmsReadTag(hProfiles[nProfiles-1], cmsSigColorantTableOutTag));
+ }
+
+ } else {
+
+ if (cmsIsTag(hProfiles[nProfiles-1], cmsSigColorantTableTag)) {
+
+ xform -> OutputColorant = cmsDupNamedColorList((cmsNAMEDCOLORLIST*) cmsReadTag(hProfiles[nProfiles-1], cmsSigColorantTableTag));
+ }
+ }
+
+ // Store the sequence of profiles
+ if (dwFlags & cmsFLAGS_KEEP_SEQUENCE) {
+ xform ->Sequence = _cmsCompileProfileSequence(ContextID, nProfiles, hProfiles);
+ }
+ else
+ xform ->Sequence = NULL;
+
+ // If this is a cached transform, init first value, which is zero (16 bits only)
+ if (!(dwFlags & cmsFLAGS_NOCACHE)) {
+
+ memset(&xform ->Cache.CacheIn, 0, sizeof(xform ->Cache.CacheIn));
+
+ if (xform ->GamutCheck != NULL) {
+ TransformOnePixelWithGamutCheck(xform, xform ->Cache.CacheIn, xform->Cache.CacheOut);
+ }
+ else {
+
+ xform ->Lut ->Eval16Fn(xform ->Cache.CacheIn, xform->Cache.CacheOut, xform -> Lut->Data);
+ }
+
+ }
+
+ return (cmsHTRANSFORM) xform;
+}
+
+// Multiprofile transforms: Gamut check is not available here, as it is unclear from which profile the gamut comes.
+cmsHTRANSFORM CMSEXPORT cmsCreateMultiprofileTransformTHR(cmsContext ContextID,
+ cmsHPROFILE hProfiles[],
+ cmsUInt32Number nProfiles,
+ cmsUInt32Number InputFormat,
+ cmsUInt32Number OutputFormat,
+ cmsUInt32Number Intent,
+ cmsUInt32Number dwFlags)
+{
+ cmsUInt32Number i;
+ cmsBool BPC[256];
+ cmsUInt32Number Intents[256];
+ cmsFloat64Number AdaptationStates[256];
+
+ if (nProfiles <= 0 || nProfiles > 255) {
+ cmsSignalError(ContextID, cmsERROR_RANGE, "Wrong number of profiles. 1..255 expected, %d found.", nProfiles);
+ return NULL;
+ }
+
+ for (i=0; i < nProfiles; i++) {
+ BPC[i] = dwFlags & cmsFLAGS_BLACKPOINTCOMPENSATION ? TRUE : FALSE;
+ Intents[i] = Intent;
+ AdaptationStates[i] = cmsSetAdaptationStateTHR(ContextID, -1);
+ }
+
+
+ return cmsCreateExtendedTransform(ContextID, nProfiles, hProfiles, BPC, Intents, AdaptationStates, NULL, 0, InputFormat, OutputFormat, dwFlags);
+}
+
+
+
+cmsHTRANSFORM CMSEXPORT cmsCreateMultiprofileTransform(cmsHPROFILE hProfiles[],
+ cmsUInt32Number nProfiles,
+ cmsUInt32Number InputFormat,
+ cmsUInt32Number OutputFormat,
+ cmsUInt32Number Intent,
+ cmsUInt32Number dwFlags)
+{
+
+ if (nProfiles <= 0 || nProfiles > 255) {
+ cmsSignalError(NULL, cmsERROR_RANGE, "Wrong number of profiles. 1..255 expected, %d found.", nProfiles);
+ return NULL;
+ }
+
+ return cmsCreateMultiprofileTransformTHR(cmsGetProfileContextID(hProfiles[0]),
+ hProfiles,
+ nProfiles,
+ InputFormat,
+ OutputFormat,
+ Intent,
+ dwFlags);
+}
+
+cmsHTRANSFORM CMSEXPORT cmsCreateTransformTHR(cmsContext ContextID,
+ cmsHPROFILE Input,
+ cmsUInt32Number InputFormat,
+ cmsHPROFILE Output,
+ cmsUInt32Number OutputFormat,
+ cmsUInt32Number Intent,
+ cmsUInt32Number dwFlags)
+{
+
+ cmsHPROFILE hArray[2];
+
+ hArray[0] = Input;
+ hArray[1] = Output;
+
+ return cmsCreateMultiprofileTransformTHR(ContextID, hArray, Output == NULL ? 1 : 2, InputFormat, OutputFormat, Intent, dwFlags);
+}
+
+CMSAPI cmsHTRANSFORM CMSEXPORT cmsCreateTransform(cmsHPROFILE Input,
+ cmsUInt32Number InputFormat,
+ cmsHPROFILE Output,
+ cmsUInt32Number OutputFormat,
+ cmsUInt32Number Intent,
+ cmsUInt32Number dwFlags)
+{
+ return cmsCreateTransformTHR(cmsGetProfileContextID(Input), Input, InputFormat, Output, OutputFormat, Intent, dwFlags);
+}
+
+
+cmsHTRANSFORM CMSEXPORT cmsCreateProofingTransformTHR(cmsContext ContextID,
+ cmsHPROFILE InputProfile,
+ cmsUInt32Number InputFormat,
+ cmsHPROFILE OutputProfile,
+ cmsUInt32Number OutputFormat,
+ cmsHPROFILE ProofingProfile,
+ cmsUInt32Number nIntent,
+ cmsUInt32Number ProofingIntent,
+ cmsUInt32Number dwFlags)
+{
+ cmsHPROFILE hArray[4];
+ cmsUInt32Number Intents[4];
+ cmsBool BPC[4];
+ cmsFloat64Number Adaptation[4];
+ cmsBool DoBPC = (dwFlags & cmsFLAGS_BLACKPOINTCOMPENSATION) ? TRUE : FALSE;
+
+
+ hArray[0] = InputProfile; hArray[1] = ProofingProfile; hArray[2] = ProofingProfile; hArray[3] = OutputProfile;
+ Intents[0] = nIntent; Intents[1] = nIntent; Intents[2] = INTENT_RELATIVE_COLORIMETRIC; Intents[3] = ProofingIntent;
+ BPC[0] = DoBPC; BPC[1] = DoBPC; BPC[2] = 0; BPC[3] = 0;
+
+ Adaptation[0] = Adaptation[1] = Adaptation[2] = Adaptation[3] = cmsSetAdaptationStateTHR(ContextID, -1);
+
+ if (!(dwFlags & (cmsFLAGS_SOFTPROOFING|cmsFLAGS_GAMUTCHECK)))
+ return cmsCreateTransformTHR(ContextID, InputProfile, InputFormat, OutputProfile, OutputFormat, nIntent, dwFlags);
+
+ return cmsCreateExtendedTransform(ContextID, 4, hArray, BPC, Intents, Adaptation,
+ ProofingProfile, 1, InputFormat, OutputFormat, dwFlags);
+
+}
+
+
+cmsHTRANSFORM CMSEXPORT cmsCreateProofingTransform(cmsHPROFILE InputProfile,
+ cmsUInt32Number InputFormat,
+ cmsHPROFILE OutputProfile,
+ cmsUInt32Number OutputFormat,
+ cmsHPROFILE ProofingProfile,
+ cmsUInt32Number nIntent,
+ cmsUInt32Number ProofingIntent,
+ cmsUInt32Number dwFlags)
+{
+ return cmsCreateProofingTransformTHR(cmsGetProfileContextID(InputProfile),
+ InputProfile,
+ InputFormat,
+ OutputProfile,
+ OutputFormat,
+ ProofingProfile,
+ nIntent,
+ ProofingIntent,
+ dwFlags);
+}
+
+
+// Grab the ContextID from an open transform. Returns NULL if a NULL transform is passed
+cmsContext CMSEXPORT cmsGetTransformContextID(cmsHTRANSFORM hTransform)
+{
+ _cmsTRANSFORM* xform = (_cmsTRANSFORM*) hTransform;
+
+ if (xform == NULL) return NULL;
+ return xform -> ContextID;
+}
+
+// Grab the input/output formats
+cmsUInt32Number CMSEXPORT cmsGetTransformInputFormat(cmsHTRANSFORM hTransform)
+{
+ _cmsTRANSFORM* xform = (_cmsTRANSFORM*) hTransform;
+
+ if (xform == NULL) return 0;
+ return xform->InputFormat;
+}
+
+cmsUInt32Number CMSEXPORT cmsGetTransformOutputFormat(cmsHTRANSFORM hTransform)
+{
+ _cmsTRANSFORM* xform = (_cmsTRANSFORM*) hTransform;
+
+ if (xform == NULL) return 0;
+ return xform->OutputFormat;
+}
+
+// For backwards compatibility
+cmsBool CMSEXPORT cmsChangeBuffersFormat(cmsHTRANSFORM hTransform,
+ cmsUInt32Number InputFormat,
+ cmsUInt32Number OutputFormat)
+{
+
+ _cmsTRANSFORM* xform = (_cmsTRANSFORM*) hTransform;
+ cmsFormatter16 FromInput, ToOutput;
+
+
+ // We only can afford to change formatters if previous transform is at least 16 bits
+ if (!(xform ->dwOriginalFlags & cmsFLAGS_CAN_CHANGE_FORMATTER)) {
+
+ cmsSignalError(xform ->ContextID, cmsERROR_NOT_SUITABLE, "cmsChangeBuffersFormat works only on transforms created originally with at least 16 bits of precision");
+ return FALSE;
+ }
+
+ FromInput = _cmsGetFormatter(xform->ContextID, InputFormat, cmsFormatterInput, CMS_PACK_FLAGS_16BITS).Fmt16;
+ ToOutput = _cmsGetFormatter(xform->ContextID, OutputFormat, cmsFormatterOutput, CMS_PACK_FLAGS_16BITS).Fmt16;
+
+ if (FromInput == NULL || ToOutput == NULL) {
+
+ cmsSignalError(xform -> ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported raster format");
+ return FALSE;
+ }
+
+ xform ->InputFormat = InputFormat;
+ xform ->OutputFormat = OutputFormat;
+ xform ->FromInput = FromInput;
+ xform ->ToOutput = ToOutput;
+ return TRUE;
+}