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Diffstat (limited to 'third_party/lcms/src/lcms2_internal.h')
| -rw-r--r-- | third_party/lcms/src/lcms2_internal.h | 1032 |
1 files changed, 1032 insertions, 0 deletions
diff --git a/third_party/lcms/src/lcms2_internal.h b/third_party/lcms/src/lcms2_internal.h new file mode 100644 index 0000000000..1dedf16b8d --- /dev/null +++ b/third_party/lcms/src/lcms2_internal.h @@ -0,0 +1,1032 @@ +//<<<+++OPENSOURCE +//<<<+++OPENSOURCE_MUST_BEGIN COMMENT==TRUE +// +// 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. +// +//--------------------------------------------------------------------------------- +// + +#ifndef _lcms_internal_H + +// Include plug-in foundation +#ifndef _lcms_plugin_H +#include "third_party/lcms/include/lcms2_plugin.h" +#endif + +// ctype is part of C99 as per 7.1.2 +#include <ctype.h> + +// assert macro is part of C99 as per 7.2 +#include <assert.h> + +// Some needed constants +#ifndef M_PI +# define M_PI 3.14159265358979323846 +#endif + +#ifndef M_LOG10E +# define M_LOG10E 0.434294481903251827651 +#endif + +// BorlandC 5.5, VC2003 are broken on that +#if defined(__BORLANDC__) || (_MSC_VER < 1400) // 1400 == VC++ 8.0 +#define sinf(x) (float)sin((float)x) +#define sqrtf(x) (float)sqrt((float)x) +#endif + + +// Alignment of ICC file format uses 4 bytes (cmsUInt32Number) +#define _cmsALIGNLONG(x) (((x)+(sizeof(cmsUInt32Number)-1)) & ~(sizeof(cmsUInt32Number)-1)) + +// Alignment to memory pointer +#define _cmsALIGNMEM(x) (((x)+(sizeof(void *) - 1)) & ~(sizeof(void *) - 1)) + +// Maximum encodeable values in floating point +#define MAX_ENCODEABLE_XYZ (1.0 + 32767.0/32768.0) +#define MIN_ENCODEABLE_ab2 (-128.0) +#define MAX_ENCODEABLE_ab2 ((65535.0/256.0) - 128.0) +#define MIN_ENCODEABLE_ab4 (-128.0) +#define MAX_ENCODEABLE_ab4 (127.0) + +// Maximum of channels for internal pipeline evaluation +#define MAX_STAGE_CHANNELS 128 + +// Unused parameter warning supression +#define cmsUNUSED_PARAMETER(x) ((void)x) + +// The specification for "inline" is section 6.7.4 of the C99 standard (ISO/IEC 9899:1999). +// unfortunately VisualC++ does not conform that +#if defined(_MSC_VER) || defined(__BORLANDC__) +# define cmsINLINE __inline +#else +# define cmsINLINE static inline +#endif + +// Other replacement functions +#ifdef _MSC_VER +# ifndef snprintf +# define snprintf _snprintf +# endif +# ifndef vsnprintf +# define vsnprintf _vsnprintf +# endif +#endif + + +// A fast way to convert from/to 16 <-> 8 bits +#define FROM_8_TO_16(rgb) (cmsUInt16Number) ((((cmsUInt16Number) (rgb)) << 8)|(rgb)) +#define FROM_16_TO_8(rgb) (cmsUInt8Number) ((((cmsUInt32Number)(rgb) * 65281U + 8388608U) >> 24) & 0xFFU) + +// Code analysis is broken on asserts +#ifdef _MSC_VER +# if (_MSC_VER >= 1500) +# define _cmsAssert(a) { assert((a)); __analysis_assume((a)); } +# else +# define _cmsAssert(a) assert((a)) +# endif +#else +# define _cmsAssert(a) assert((a)) +#endif + +//--------------------------------------------------------------------------------- + +// Determinant lower than that are assumed zero (used on matrix invert) +#define MATRIX_DET_TOLERANCE 0.0001 + +//--------------------------------------------------------------------------------- + +// Fixed point +#define FIXED_TO_INT(x) ((x)>>16) +#define FIXED_REST_TO_INT(x) ((x)&0xFFFFU) +#define ROUND_FIXED_TO_INT(x) (((x)+0x8000)>>16) + +cmsINLINE cmsS15Fixed16Number _cmsToFixedDomain(int a) { return a + ((a + 0x7fff) / 0xffff); } +cmsINLINE int _cmsFromFixedDomain(cmsS15Fixed16Number a) { return a - ((a + 0x7fff) >> 16); } + +// ----------------------------------------------------------------------------------------------------------- + +// Fast floor conversion logic. Thanks to Sree Kotay and Stuart Nixon +// note than this only works in the range ..-32767...+32767 because +// mantissa is interpreted as 15.16 fixed point. +// The union is to avoid pointer aliasing overoptimization. +cmsINLINE int _cmsQuickFloor(cmsFloat64Number val) +{ +#ifdef CMS_DONT_USE_FAST_FLOOR + return (int) floor(val); +#else + const cmsFloat64Number _lcms_double2fixmagic = 68719476736.0 * 1.5; // 2^36 * 1.5, (52-16=36) uses limited precision to floor + union { + cmsFloat64Number val; + int halves[2]; + } temp; + + temp.val = val + _lcms_double2fixmagic; + +#ifdef CMS_USE_BIG_ENDIAN + return temp.halves[1] >> 16; +#else + return temp.halves[0] >> 16; +#endif +#endif +} + +// Fast floor restricted to 0..65535.0 +cmsINLINE cmsUInt16Number _cmsQuickFloorWord(cmsFloat64Number d) +{ + return (cmsUInt16Number) _cmsQuickFloor(d - 32767.0) + 32767U; +} + +// Floor to word, taking care of saturation +cmsINLINE cmsUInt16Number _cmsQuickSaturateWord(cmsFloat64Number d) +{ + d += 0.5; + if (d <= 0) return 0; + if (d >= 65535.0) return 0xffff; + + return _cmsQuickFloorWord(d); +} + + +// Pthread support -------------------------------------------------------------------- +#ifndef CMS_NO_PTHREADS + +// This is the threading support. Unfortunately, it has to be platform-dependent because +// windows does not support pthreads. + +#ifdef CMS_IS_WINDOWS_ + +#define WIN32_LEAN_AND_MEAN 1 +#include <windows.h> + + +// From: http://locklessinc.com/articles/pthreads_on_windows/ +// The pthreads API has an initialization macro that has no correspondence to anything in +// the windows API. By investigating the internal definition of the critical section type, +// one may work out how to initialize one without calling InitializeCriticalSection(). +// The trick here is that InitializeCriticalSection() is not allowed to fail. It tries +// to allocate a critical section debug object, but if no memory is available, it sets +// the pointer to a specific value. (One would expect that value to be NULL, but it is +// actually (void *)-1 for some reason.) Thus we can use this special value for that +// pointer, and the critical section code will work. + +// The other important part of the critical section type to initialize is the number +// of waiters. This controls whether or not the mutex is locked. Fortunately, this +// part of the critical section is unlikely to change. Apparently, many programs +// already test critical sections to see if they are locked using this value, so +// Microsoft felt that it was necessary to keep it set at -1 for an unlocked critical +// section, even when they changed the underlying algorithm to be more scalable. +// The final parts of the critical section object are unimportant, and can be set +// to zero for their defaults. This yields an initialization macro: + +typedef CRITICAL_SECTION _cmsMutex; + +#define CMS_MUTEX_INITIALIZER {(void*) -1,-1,0,0,0,0} + +cmsINLINE int _cmsLockPrimitive(_cmsMutex *m) +{ + EnterCriticalSection(m); + return 0; +} + +cmsINLINE int _cmsUnlockPrimitive(_cmsMutex *m) +{ + LeaveCriticalSection(m); + return 0; +} + +cmsINLINE int _cmsInitMutexPrimitive(_cmsMutex *m) +{ + InitializeCriticalSection(m); + return 0; +} + +cmsINLINE int _cmsDestroyMutexPrimitive(_cmsMutex *m) +{ + DeleteCriticalSection(m); + return 0; +} + +cmsINLINE int _cmsEnterCriticalSectionPrimitive(_cmsMutex *m) +{ + EnterCriticalSection(m); + return 0; +} + +cmsINLINE int _cmsLeaveCriticalSectionPrimitive(_cmsMutex *m) +{ + LeaveCriticalSection(m); + return 0; +} + +#else + +// Rest of the wide world +#include <pthread.h> + +#define CMS_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER +typedef pthread_mutex_t _cmsMutex; + + +cmsINLINE int _cmsLockPrimitive(_cmsMutex *m) +{ + return pthread_mutex_lock(m); +} + +cmsINLINE int _cmsUnlockPrimitive(_cmsMutex *m) +{ + return pthread_mutex_unlock(m); +} + +cmsINLINE int _cmsInitMutexPrimitive(_cmsMutex *m) +{ + return pthread_mutex_init(m, NULL); +} + +cmsINLINE int _cmsDestroyMutexPrimitive(_cmsMutex *m) +{ + return pthread_mutex_destroy(m); +} + +cmsINLINE int _cmsEnterCriticalSectionPrimitive(_cmsMutex *m) +{ + return pthread_mutex_lock(m); +} + +cmsINLINE int _cmsLeaveCriticalSectionPrimitive(_cmsMutex *m) +{ + return pthread_mutex_unlock(m); +} + +#endif +#else + +#define CMS_MUTEX_INITIALIZER 0 +typedef int _cmsMutex; + + +cmsINLINE int _cmsLockPrimitive(_cmsMutex *m) +{ + return 0; + cmsUNUSED_PARAMETER(m); +} + +cmsINLINE int _cmsUnlockPrimitive(_cmsMutex *m) +{ + return 0; + cmsUNUSED_PARAMETER(m); +} + +cmsINLINE int _cmsInitMutexPrimitive(_cmsMutex *m) +{ + return 0; + cmsUNUSED_PARAMETER(m); +} + +cmsINLINE int _cmsDestroyMutexPrimitive(_cmsMutex *m) +{ + return 0; + cmsUNUSED_PARAMETER(m); +} + +cmsINLINE int _cmsEnterCriticalSectionPrimitive(_cmsMutex *m) +{ + return 0; + cmsUNUSED_PARAMETER(m); +} + +cmsINLINE int _cmsLeaveCriticalSectionPrimitive(_cmsMutex *m) +{ + return 0; + cmsUNUSED_PARAMETER(m); +} +#endif + +// Plug-In registration --------------------------------------------------------------- + +// Specialized function for plug-in memory management. No pairing free() since whole pool is freed at once. +void* _cmsPluginMalloc(cmsContext ContextID, cmsUInt32Number size); + +// Memory management +cmsBool _cmsRegisterMemHandlerPlugin(cmsContext ContextID, cmsPluginBase* Plugin); + +// Interpolation +cmsBool _cmsRegisterInterpPlugin(cmsContext ContextID, cmsPluginBase* Plugin); + +// Parametric curves +cmsBool _cmsRegisterParametricCurvesPlugin(cmsContext ContextID, cmsPluginBase* Plugin); + +// Formatters management +cmsBool _cmsRegisterFormattersPlugin(cmsContext ContextID, cmsPluginBase* Plugin); + +// Tag type management +cmsBool _cmsRegisterTagTypePlugin(cmsContext ContextID, cmsPluginBase* Plugin); + +// Tag management +cmsBool _cmsRegisterTagPlugin(cmsContext ContextID, cmsPluginBase* Plugin); + +// Intent management +cmsBool _cmsRegisterRenderingIntentPlugin(cmsContext ContextID, cmsPluginBase* Plugin); + +// Multi Process elements +cmsBool _cmsRegisterMultiProcessElementPlugin(cmsContext ContextID, cmsPluginBase* Plugin); + +// Optimization +cmsBool _cmsRegisterOptimizationPlugin(cmsContext ContextID, cmsPluginBase* Plugin); + +// Transform +cmsBool _cmsRegisterTransformPlugin(cmsContext ContextID, cmsPluginBase* Plugin); + +// Mutex +cmsBool _cmsRegisterMutexPlugin(cmsContext ContextID, cmsPluginBase* Plugin); + +// --------------------------------------------------------------------------------------------------------- + +// Suballocators. +typedef struct _cmsSubAllocator_chunk_st { + + cmsUInt8Number* Block; + cmsUInt32Number BlockSize; + cmsUInt32Number Used; + + struct _cmsSubAllocator_chunk_st* next; + +} _cmsSubAllocator_chunk; + + +typedef struct { + + cmsContext ContextID; + _cmsSubAllocator_chunk* h; + +} _cmsSubAllocator; + + +_cmsSubAllocator* _cmsCreateSubAlloc(cmsContext ContextID, cmsUInt32Number Initial); +void _cmsSubAllocDestroy(_cmsSubAllocator* s); +void* _cmsSubAlloc(_cmsSubAllocator* s, cmsUInt32Number size); +void* _cmsSubAllocDup(_cmsSubAllocator* s, const void *ptr, cmsUInt32Number size); + +// ---------------------------------------------------------------------------------- + +// The context clients. +typedef enum { + + UserPtr, // User-defined pointer + Logger, + AlarmCodesContext, + AdaptationStateContext, + MemPlugin, + InterpPlugin, + CurvesPlugin, + FormattersPlugin, + TagTypePlugin, + TagPlugin, + IntentPlugin, + MPEPlugin, + OptimizationPlugin, + TransformPlugin, + MutexPlugin, + + // Last in list + MemoryClientMax + +} _cmsMemoryClient; + + +// Container for memory management plug-in. +typedef struct { + + _cmsMallocFnPtrType MallocPtr; + _cmsMalloZerocFnPtrType MallocZeroPtr; + _cmsFreeFnPtrType FreePtr; + _cmsReallocFnPtrType ReallocPtr; + _cmsCallocFnPtrType CallocPtr; + _cmsDupFnPtrType DupPtr; + +} _cmsMemPluginChunkType; + +// Copy memory management function pointers from plug-in to chunk, taking care of missing routines +void _cmsInstallAllocFunctions(cmsPluginMemHandler* Plugin, _cmsMemPluginChunkType* ptr); + +// Internal structure for context +struct _cmsContext_struct { + + struct _cmsContext_struct* Next; // Points to next context in the new style + _cmsSubAllocator* MemPool; // The memory pool that stores context data + + void* chunks[MemoryClientMax]; // array of pointers to client chunks. Memory itself is hold in the suballocator. + // If NULL, then it reverts to global Context0 + + _cmsMemPluginChunkType DefaultMemoryManager; // The allocators used for creating the context itself. Cannot be overriden +}; + +// Returns a pointer to a valid context structure, including the global one if id is zero. +// Verifies the magic number. +struct _cmsContext_struct* _cmsGetContext(cmsContext ContextID); + +// Returns the block assigned to the specific zone. +void* _cmsContextGetClientChunk(cmsContext id, _cmsMemoryClient mc); + + +// Chunks of context memory by plug-in client ------------------------------------------------------- + +// Those structures encapsulates all variables needed by the several context clients (mostly plug-ins) + +// Container for error logger -- not a plug-in +typedef struct { + + cmsLogErrorHandlerFunction LogErrorHandler; // Set to NULL for Context0 fallback + +} _cmsLogErrorChunkType; + +// The global Context0 storage for error logger +extern _cmsLogErrorChunkType _cmsLogErrorChunk; + +// Allocate and init error logger container. +void _cmsAllocLogErrorChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); + +// Container for alarm codes -- not a plug-in +typedef struct { + + cmsUInt16Number AlarmCodes[cmsMAXCHANNELS]; + +} _cmsAlarmCodesChunkType; + +// The global Context0 storage for alarm codes +extern _cmsAlarmCodesChunkType _cmsAlarmCodesChunk; + +// Allocate and init alarm codes container. +void _cmsAllocAlarmCodesChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); + +// Container for adaptation state -- not a plug-in +typedef struct { + + cmsFloat64Number AdaptationState; + +} _cmsAdaptationStateChunkType; + +// The global Context0 storage for adaptation state +extern _cmsAdaptationStateChunkType _cmsAdaptationStateChunk; + +// Allocate and init adaptation state container. +void _cmsAllocAdaptationStateChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); + + +// The global Context0 storage for memory management +extern _cmsMemPluginChunkType _cmsMemPluginChunk; + +// Allocate and init memory management container. +void _cmsAllocMemPluginChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); + +// Container for interpolation plug-in +typedef struct { + + cmsInterpFnFactory Interpolators; + +} _cmsInterpPluginChunkType; + +// The global Context0 storage for interpolation plug-in +extern _cmsInterpPluginChunkType _cmsInterpPluginChunk; + +// Allocate and init interpolation container. +void _cmsAllocInterpPluginChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); + +// Container for parametric curves plug-in +typedef struct { + + struct _cmsParametricCurvesCollection_st* ParametricCurves; + +} _cmsCurvesPluginChunkType; + +// The global Context0 storage for tone curves plug-in +extern _cmsCurvesPluginChunkType _cmsCurvesPluginChunk; + +// Allocate and init parametric curves container. +void _cmsAllocCurvesPluginChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); + +// Container for formatters plug-in +typedef struct { + + struct _cms_formatters_factory_list* FactoryList; + +} _cmsFormattersPluginChunkType; + +// The global Context0 storage for formatters plug-in +extern _cmsFormattersPluginChunkType _cmsFormattersPluginChunk; + +// Allocate and init formatters container. +void _cmsAllocFormattersPluginChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); + +// This chunk type is shared by TagType plug-in and MPE Plug-in +typedef struct { + + struct _cmsTagTypeLinkedList_st* TagTypes; + +} _cmsTagTypePluginChunkType; + + +// The global Context0 storage for tag types plug-in +extern _cmsTagTypePluginChunkType _cmsTagTypePluginChunk; + + +// The global Context0 storage for mult process elements plug-in +extern _cmsTagTypePluginChunkType _cmsMPETypePluginChunk; + +// Allocate and init Tag types container. +void _cmsAllocTagTypePluginChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); +// Allocate and init MPE container. +void _cmsAllocMPETypePluginChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); +// Container for tag plug-in +typedef struct { + + struct _cmsTagLinkedList_st* Tag; + +} _cmsTagPluginChunkType; + + +// The global Context0 storage for tag plug-in +extern _cmsTagPluginChunkType _cmsTagPluginChunk; + +// Allocate and init Tag container. +void _cmsAllocTagPluginChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); + +// Container for intents plug-in +typedef struct { + + struct _cms_intents_list* Intents; + +} _cmsIntentsPluginChunkType; + + +// The global Context0 storage for intents plug-in +extern _cmsIntentsPluginChunkType _cmsIntentsPluginChunk; + +// Allocate and init intents container. +void _cmsAllocIntentsPluginChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); + +// Container for optimization plug-in +typedef struct { + + struct _cmsOptimizationCollection_st* OptimizationCollection; + +} _cmsOptimizationPluginChunkType; + + +// The global Context0 storage for optimizers plug-in +extern _cmsOptimizationPluginChunkType _cmsOptimizationPluginChunk; + +// Allocate and init optimizers container. +void _cmsAllocOptimizationPluginChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); + +// Container for transform plug-in +typedef struct { + + struct _cmsTransformCollection_st* TransformCollection; + +} _cmsTransformPluginChunkType; + +// The global Context0 storage for full-transform replacement plug-in +extern _cmsTransformPluginChunkType _cmsTransformPluginChunk; + +// Allocate and init transform container. +void _cmsAllocTransformPluginChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); + +// Container for mutex plug-in +typedef struct { + + _cmsCreateMutexFnPtrType CreateMutexPtr; + _cmsDestroyMutexFnPtrType DestroyMutexPtr; + _cmsLockMutexFnPtrType LockMutexPtr; + _cmsUnlockMutexFnPtrType UnlockMutexPtr; + +} _cmsMutexPluginChunkType; + +// The global Context0 storage for mutex plug-in +extern _cmsMutexPluginChunkType _cmsMutexPluginChunk; + +// Allocate and init mutex container. +void _cmsAllocMutexPluginChunk(struct _cmsContext_struct* ctx, + const struct _cmsContext_struct* src); + +// ---------------------------------------------------------------------------------- +// MLU internal representation +typedef struct { + + cmsUInt16Number Language; + cmsUInt16Number Country; + + cmsUInt32Number StrW; // Offset to current unicode string + cmsUInt32Number Len; // Length in bytes + +} _cmsMLUentry; + +struct _cms_MLU_struct { + + cmsContext ContextID; + + // The directory + int AllocatedEntries; + int UsedEntries; + _cmsMLUentry* Entries; // Array of pointers to strings allocated in MemPool + + // The Pool + cmsUInt32Number PoolSize; // The maximum allocated size + cmsUInt32Number PoolUsed; // The used size + void* MemPool; // Pointer to begin of memory pool +}; + +// Named color list internal representation +typedef struct { + + char Name[cmsMAX_PATH]; + cmsUInt16Number PCS[3]; + cmsUInt16Number DeviceColorant[cmsMAXCHANNELS]; + +} _cmsNAMEDCOLOR; + +struct _cms_NAMEDCOLORLIST_struct { + + cmsUInt32Number nColors; + cmsUInt32Number Allocated; + cmsUInt32Number ColorantCount; + + char Prefix[33]; // Prefix and suffix are defined to be 32 characters at most + char Suffix[33]; + + _cmsNAMEDCOLOR* List; + + cmsContext ContextID; +}; + + +// ---------------------------------------------------------------------------------- + +// This is the internal struct holding profile details. + +// Maximum supported tags in a profile +#define MAX_TABLE_TAG 100 + +typedef struct _cms_iccprofile_struct { + + // I/O handler + cmsIOHANDLER* IOhandler; + + // The thread ID + cmsContext ContextID; + + // Creation time + struct tm Created; + + // Only most important items found in ICC profiles + cmsUInt32Number Version; + cmsProfileClassSignature DeviceClass; + cmsColorSpaceSignature ColorSpace; + cmsColorSpaceSignature PCS; + cmsUInt32Number RenderingIntent; + + cmsUInt32Number flags; + cmsUInt32Number manufacturer, model; + cmsUInt64Number attributes; + cmsUInt32Number creator; + + cmsProfileID ProfileID; + + // Dictionary + cmsUInt32Number TagCount; + cmsTagSignature TagNames[MAX_TABLE_TAG]; + cmsTagSignature TagLinked[MAX_TABLE_TAG]; // The tag to wich is linked (0=none) + cmsUInt32Number TagSizes[MAX_TABLE_TAG]; // Size on disk + cmsUInt32Number TagOffsets[MAX_TABLE_TAG]; + cmsBool TagSaveAsRaw[MAX_TABLE_TAG]; // True to write uncooked + void * TagPtrs[MAX_TABLE_TAG]; + cmsTagTypeHandler* TagTypeHandlers[MAX_TABLE_TAG]; // Same structure may be serialized on different types + // depending on profile version, so we keep track of the + // type handler for each tag in the list. + // Special + cmsBool IsWrite; + + // Keep a mutex for cmsReadTag -- Note that this only works if the user includes a mutex plugin + void * UsrMutex; + +} _cmsICCPROFILE; + +// IO helpers for profiles +cmsBool _cmsReadHeader(_cmsICCPROFILE* Icc); +cmsBool _cmsWriteHeader(_cmsICCPROFILE* Icc, cmsUInt32Number UsedSpace); +int _cmsSearchTag(_cmsICCPROFILE* Icc, cmsTagSignature sig, cmsBool lFollowLinks); + +// Tag types +cmsTagTypeHandler* _cmsGetTagTypeHandler(cmsContext ContextID, cmsTagTypeSignature sig); +cmsTagTypeSignature _cmsGetTagTrueType(cmsHPROFILE hProfile, cmsTagSignature sig); +cmsTagDescriptor* _cmsGetTagDescriptor(cmsContext ContextID, cmsTagSignature sig); + +// Error logging --------------------------------------------------------------------------------------------------------- + +void _cmsTagSignature2String(char String[5], cmsTagSignature sig); + +// Interpolation --------------------------------------------------------------------------------------------------------- + +cmsInterpParams* _cmsComputeInterpParams(cmsContext ContextID, int nSamples, int InputChan, int OutputChan, const void* Table, cmsUInt32Number dwFlags); +cmsInterpParams* _cmsComputeInterpParamsEx(cmsContext ContextID, const cmsUInt32Number nSamples[], int InputChan, int OutputChan, const void* Table, cmsUInt32Number dwFlags); +void _cmsFreeInterpParams(cmsInterpParams* p); +cmsBool _cmsSetInterpolationRoutine(cmsContext ContextID, cmsInterpParams* p); + +// Curves ---------------------------------------------------------------------------------------------------------------- + +// This struct holds information about a segment, plus a pointer to the function that implements the evaluation. +// In the case of table-based, Eval pointer is set to NULL + +// The gamma function main structure +struct _cms_curve_struct { + + cmsInterpParams* InterpParams; // Private optimizations for interpolation + + cmsUInt32Number nSegments; // Number of segments in the curve. Zero for a 16-bit based tables + cmsCurveSegment* Segments; // The segments + cmsInterpParams** SegInterp; // Array of private optimizations for interpolation in table-based segments + + cmsParametricCurveEvaluator* Evals; // Evaluators (one per segment) + + // 16 bit Table-based representation follows + cmsUInt32Number nEntries; // Number of table elements + cmsUInt16Number* Table16; // The table itself. +}; + + +// Pipelines & Stages --------------------------------------------------------------------------------------------- + +// A single stage +struct _cmsStage_struct { + + cmsContext ContextID; + + cmsStageSignature Type; // Identifies the stage + cmsStageSignature Implements; // Identifies the *function* of the stage (for optimizations) + + cmsUInt32Number InputChannels; // Input channels -- for optimization purposes + cmsUInt32Number OutputChannels; // Output channels -- for optimization purposes + + _cmsStageEvalFn EvalPtr; // Points to fn that evaluates the stage (always in floating point) + _cmsStageDupElemFn DupElemPtr; // Points to a fn that duplicates the *data* of the stage + _cmsStageFreeElemFn FreePtr; // Points to a fn that sets the *data* of the stage free + + // A generic pointer to whatever memory needed by the stage + void* Data; + + // Maintains linked list (used internally) + struct _cmsStage_struct* Next; +}; + + +// Special Stages (cannot be saved) +cmsStage* _cmsStageAllocLab2XYZ(cmsContext ContextID); +cmsStage* _cmsStageAllocXYZ2Lab(cmsContext ContextID); +cmsStage* _cmsStageAllocLabPrelin(cmsContext ContextID); +cmsStage* _cmsStageAllocLabV2ToV4(cmsContext ContextID); +cmsStage* _cmsStageAllocLabV2ToV4curves(cmsContext ContextID); +cmsStage* _cmsStageAllocLabV4ToV2(cmsContext ContextID); +cmsStage* _cmsStageAllocNamedColor(cmsNAMEDCOLORLIST* NamedColorList, cmsBool UsePCS); +cmsStage* _cmsStageAllocIdentityCurves(cmsContext ContextID, int nChannels); +cmsStage* _cmsStageAllocIdentityCLut(cmsContext ContextID, int nChan); +cmsStage* _cmsStageNormalizeFromLabFloat(cmsContext ContextID); +cmsStage* _cmsStageNormalizeFromXyzFloat(cmsContext ContextID); +cmsStage* _cmsStageNormalizeToLabFloat(cmsContext ContextID); +cmsStage* _cmsStageNormalizeToXyzFloat(cmsContext ContextID); + +// For curve set only +cmsToneCurve** _cmsStageGetPtrToCurveSet(const cmsStage* mpe); + + +// Pipeline Evaluator (in floating point) +typedef void (* _cmsPipelineEvalFloatFn)(const cmsFloat32Number In[], + cmsFloat32Number Out[], + const void* Data); + +struct _cmsPipeline_struct { + + cmsStage* Elements; // Points to elements chain + cmsUInt32Number InputChannels, OutputChannels; + + // Data & evaluators + void *Data; + + _cmsOPTeval16Fn Eval16Fn; + _cmsPipelineEvalFloatFn EvalFloatFn; + _cmsFreeUserDataFn FreeDataFn; + _cmsDupUserDataFn DupDataFn; + + cmsContext ContextID; // Environment + + cmsBool SaveAs8Bits; // Implementation-specific: save as 8 bits if possible +}; + +// LUT reading & creation ------------------------------------------------------------------------------------------- + +// Read tags using low-level function, provide necessary glue code to adapt versions, etc. All those return a brand new copy +// of the LUTS, since ownership of original is up to the profile. The user should free allocated resources. + +cmsPipeline* _cmsReadInputLUT(cmsHPROFILE hProfile, int Intent); +cmsPipeline* _cmsReadOutputLUT(cmsHPROFILE hProfile, int Intent); +cmsPipeline* _cmsReadDevicelinkLUT(cmsHPROFILE hProfile, int Intent); + +// Special values +cmsBool _cmsReadMediaWhitePoint(cmsCIEXYZ* Dest, cmsHPROFILE hProfile); +cmsBool _cmsReadCHAD(cmsMAT3* Dest, cmsHPROFILE hProfile); + +// Profile linker -------------------------------------------------------------------------------------------------- + +cmsPipeline* _cmsLinkProfiles(cmsContext ContextID, + cmsUInt32Number nProfiles, + cmsUInt32Number TheIntents[], + cmsHPROFILE hProfiles[], + cmsBool BPC[], + cmsFloat64Number AdaptationStates[], + cmsUInt32Number dwFlags); + +// Sequence -------------------------------------------------------------------------------------------------------- + +cmsSEQ* _cmsReadProfileSequence(cmsHPROFILE hProfile); +cmsBool _cmsWriteProfileSequence(cmsHPROFILE hProfile, const cmsSEQ* seq); +cmsSEQ* _cmsCompileProfileSequence(cmsContext ContextID, cmsUInt32Number nProfiles, cmsHPROFILE hProfiles[]); + + +// LUT optimization ------------------------------------------------------------------------------------------------ + +cmsUInt16Number _cmsQuantizeVal(cmsFloat64Number i, int MaxSamples); +int _cmsReasonableGridpointsByColorspace(cmsColorSpaceSignature Colorspace, cmsUInt32Number dwFlags); + +cmsBool _cmsEndPointsBySpace(cmsColorSpaceSignature Space, + cmsUInt16Number **White, + cmsUInt16Number **Black, + cmsUInt32Number *nOutputs); + +cmsBool _cmsOptimizePipeline(cmsContext ContextID, + cmsPipeline** Lut, + int Intent, + cmsUInt32Number* InputFormat, + cmsUInt32Number* OutputFormat, + cmsUInt32Number* dwFlags ); + + +// Hi level LUT building ---------------------------------------------------------------------------------------------- + +cmsPipeline* _cmsCreateGamutCheckPipeline(cmsContext ContextID, + cmsHPROFILE hProfiles[], + cmsBool BPC[], + cmsUInt32Number Intents[], + cmsFloat64Number AdaptationStates[], + cmsUInt32Number nGamutPCSposition, + cmsHPROFILE hGamut); + + +// Formatters ------------------------------------------------------------------------------------------------------------ + +#define cmsFLAGS_CAN_CHANGE_FORMATTER 0x02000000 // Allow change buffer format + +cmsBool _cmsFormatterIsFloat(cmsUInt32Number Type); +cmsBool _cmsFormatterIs8bit(cmsUInt32Number Type); + +cmsFormatter _cmsGetFormatter(cmsContext ContextID, + cmsUInt32Number Type, // Specific type, i.e. TYPE_RGB_8 + cmsFormatterDirection Dir, + cmsUInt32Number dwFlags); + + +#ifndef CMS_NO_HALF_SUPPORT + +// Half float +cmsFloat32Number _cmsHalf2Float(cmsUInt16Number h); +cmsUInt16Number _cmsFloat2Half(cmsFloat32Number flt); + +#endif + +// Transform logic ------------------------------------------------------------------------------------------------------ + +struct _cmstransform_struct; + +typedef struct { + + // 1-pixel cache (16 bits only) + cmsUInt16Number CacheIn[cmsMAXCHANNELS]; + cmsUInt16Number CacheOut[cmsMAXCHANNELS]; + +} _cmsCACHE; + + + +// Transformation +typedef struct _cmstransform_struct { + + cmsUInt32Number InputFormat, OutputFormat; // Keep formats for further reference + + // Points to transform code + _cmsTransformFn xform; + + // Formatters, cannot be embedded into LUT because cache + cmsFormatter16 FromInput; + cmsFormatter16 ToOutput; + + cmsFormatterFloat FromInputFloat; + cmsFormatterFloat ToOutputFloat; + + // 1-pixel cache seed for zero as input (16 bits, read only) + _cmsCACHE Cache; + + // A Pipeline holding the full (optimized) transform + cmsPipeline* Lut; + + // A Pipeline holding the gamut check. It goes from the input space to bilevel + cmsPipeline* GamutCheck; + + // Colorant tables + cmsNAMEDCOLORLIST* InputColorant; // Input Colorant table + cmsNAMEDCOLORLIST* OutputColorant; // Colorant table (for n chans > CMYK) + + // Informational only + cmsColorSpaceSignature EntryColorSpace; + cmsColorSpaceSignature ExitColorSpace; + + // White points (informative only) + cmsCIEXYZ EntryWhitePoint; + cmsCIEXYZ ExitWhitePoint; + + // Profiles used to create the transform + cmsSEQ* Sequence; + + cmsUInt32Number dwOriginalFlags; + cmsFloat64Number AdaptationState; + + // The intent of this transform. That is usually the last intent in the profilechain, but may differ + cmsUInt32Number RenderingIntent; + + // An id that uniquely identifies the running context. May be null. + cmsContext ContextID; + + // A user-defined pointer that can be used to store data for transform plug-ins + void* UserData; + _cmsFreeUserDataFn FreeUserData; + +} _cmsTRANSFORM; + +// -------------------------------------------------------------------------------------------------- + +cmsHTRANSFORM _cmsChain2Lab(cmsContext ContextID, + cmsUInt32Number nProfiles, + cmsUInt32Number InputFormat, + cmsUInt32Number OutputFormat, + const cmsUInt32Number Intents[], + const cmsHPROFILE hProfiles[], + const cmsBool BPC[], + const cmsFloat64Number AdaptationStates[], + cmsUInt32Number dwFlags); + + +cmsToneCurve* _cmsBuildKToneCurve(cmsContext ContextID, + cmsUInt32Number nPoints, + cmsUInt32Number nProfiles, + const cmsUInt32Number Intents[], + const cmsHPROFILE hProfiles[], + const cmsBool BPC[], + const cmsFloat64Number AdaptationStates[], + cmsUInt32Number dwFlags); + +cmsBool _cmsAdaptationMatrix(cmsMAT3* r, const cmsMAT3* ConeMatrix, const cmsCIEXYZ* FromIll, const cmsCIEXYZ* ToIll); + +cmsBool _cmsBuildRGB2XYZtransferMatrix(cmsMAT3* r, const cmsCIExyY* WhitePoint, const cmsCIExyYTRIPLE* Primaries); + + +#define _lcms_internal_H +#endif +//<<<+++OPENSOURCE_MUST_END |