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Java example source code file (lcms2_plugin.h)

This example Java source code file (lcms2_plugin.h) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

buffer, cmmcargo, cmsapi, cmsexport, contextid, data, freeprivatedatafn, freeptr, lut, points, ptr, stride, the, type

The lcms2_plugin.h Java example source code

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

// This file is available under and governed by the GNU General Public
// License version 2 only, as published by the Free Software Foundation.
// However, the following notice accompanied the original version of this
// file:
//
//---------------------------------------------------------------------------------
//
//  Little Color Management System
//  Copyright (c) 1998-2011 Marti Maria Saguer
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//---------------------------------------------------------------------------------
//
// This is the plug-in header file. Normal LittleCMS clients should not use it.
// It is provided for plug-in writters that may want to access the support
// functions to do low level operations. All plug-in related structures
// are defined here. Including this file forces to include the standard API too.

#ifndef _lcms_plugin_H

// Deal with Microsoft's attempt at deprecating C standard runtime functions
#ifdef _MSC_VER
#    if (_MSC_VER >= 1400)
#      ifndef _CRT_SECURE_NO_DEPRECATE
#        define _CRT_SECURE_NO_DEPRECATE
#      endif
#      ifndef _CRT_SECURE_NO_WARNINGS
#        define _CRT_SECURE_NO_WARNINGS
#      endif
#    endif
#endif

#ifndef _lcms2_H
#include "lcms2.h"
#endif

// We need some standard C functions.
#include <stdlib.h>
#include <math.h>
#include <stdarg.h>
#include <memory.h>
#include <string.h>


#ifndef CMS_USE_CPP_API
#   ifdef __cplusplus
extern "C" {
#   endif
#endif

// Vector & Matrix operations -----------------------------------------------------------------------

// Axis of the matrix/array. No specific meaning at all.
#define VX      0
#define VY      1
#define VZ      2

// Vectors
typedef struct {
    cmsFloat64Number n[3];

    } cmsVEC3;

// 3x3 Matrix
typedef struct {
    cmsVEC3 v[3];

    } cmsMAT3;

CMSAPI void               CMSEXPORT _cmsVEC3init(cmsVEC3* r, cmsFloat64Number x, cmsFloat64Number y, cmsFloat64Number z);
CMSAPI void               CMSEXPORT _cmsVEC3minus(cmsVEC3* r, const cmsVEC3* a, const cmsVEC3* b);
CMSAPI void               CMSEXPORT _cmsVEC3cross(cmsVEC3* r, const cmsVEC3* u, const cmsVEC3* v);
CMSAPI cmsFloat64Number   CMSEXPORT _cmsVEC3dot(const cmsVEC3* u, const cmsVEC3* v);
CMSAPI cmsFloat64Number   CMSEXPORT _cmsVEC3length(const cmsVEC3* a);
CMSAPI cmsFloat64Number   CMSEXPORT _cmsVEC3distance(const cmsVEC3* a, const cmsVEC3* b);

CMSAPI void               CMSEXPORT _cmsMAT3identity(cmsMAT3* a);
CMSAPI cmsBool            CMSEXPORT _cmsMAT3isIdentity(const cmsMAT3* a);
CMSAPI void               CMSEXPORT _cmsMAT3per(cmsMAT3* r, const cmsMAT3* a, const cmsMAT3* b);
CMSAPI cmsBool            CMSEXPORT _cmsMAT3inverse(const cmsMAT3* a, cmsMAT3* b);
CMSAPI cmsBool            CMSEXPORT _cmsMAT3solve(cmsVEC3* x, cmsMAT3* a, cmsVEC3* b);
CMSAPI void               CMSEXPORT _cmsMAT3eval(cmsVEC3* r, const cmsMAT3* a, const cmsVEC3* v);


// Error logging  -------------------------------------------------------------------------------------

CMSAPI void               CMSEXPORT  cmsSignalError(cmsContext ContextID, cmsUInt32Number ErrorCode, const char *ErrorText, ...);

// Memory management ----------------------------------------------------------------------------------

CMSAPI void*              CMSEXPORT _cmsMalloc(cmsContext ContextID, cmsUInt32Number size);
CMSAPI void*              CMSEXPORT _cmsMallocZero(cmsContext ContextID, cmsUInt32Number size);
CMSAPI void*              CMSEXPORT _cmsCalloc(cmsContext ContextID, cmsUInt32Number num, cmsUInt32Number size);
CMSAPI void*              CMSEXPORT _cmsRealloc(cmsContext ContextID, void* Ptr, cmsUInt32Number NewSize);
CMSAPI void               CMSEXPORT _cmsFree(cmsContext ContextID, void* Ptr);
CMSAPI void*              CMSEXPORT _cmsDupMem(cmsContext ContextID, const void* Org, cmsUInt32Number size);

// I/O handler ----------------------------------------------------------------------------------

struct _cms_io_handler {

    void* stream;   // Associated stream, which is implemented differently depending on media.

    cmsContext        ContextID;
    cmsUInt32Number   UsedSpace;
    cmsUInt32Number   ReportedSize;
    char              PhysicalFile[cmsMAX_PATH];

    cmsUInt32Number   (* Read)(struct _cms_io_handler* iohandler, void *Buffer,
                                                                  cmsUInt32Number size,
                                                                  cmsUInt32Number count);
    cmsBool           (* Seek)(struct _cms_io_handler* iohandler, cmsUInt32Number offset);
    cmsBool           (* Close)(struct _cms_io_handler* iohandler);
    cmsUInt32Number   (* Tell)(struct _cms_io_handler* iohandler);
    cmsBool           (* Write)(struct _cms_io_handler* iohandler, cmsUInt32Number size,
                                                                   const void* Buffer);
};

// Endianess adjust functions
CMSAPI cmsUInt16Number   CMSEXPORT  _cmsAdjustEndianess16(cmsUInt16Number Word);
CMSAPI cmsUInt32Number   CMSEXPORT  _cmsAdjustEndianess32(cmsUInt32Number Value);
CMSAPI void              CMSEXPORT  _cmsAdjustEndianess64(cmsUInt64Number* Result, cmsUInt64Number* QWord);

// Helper IO functions
CMSAPI cmsBool           CMSEXPORT  _cmsReadUInt8Number(cmsIOHANDLER* io,  cmsUInt8Number* n);
CMSAPI cmsBool           CMSEXPORT  _cmsReadUInt16Number(cmsIOHANDLER* io, cmsUInt16Number* n);
CMSAPI cmsBool           CMSEXPORT  _cmsReadUInt32Number(cmsIOHANDLER* io, cmsUInt32Number* n);
CMSAPI cmsBool           CMSEXPORT  _cmsReadFloat32Number(cmsIOHANDLER* io, cmsFloat32Number* n);
CMSAPI cmsBool           CMSEXPORT  _cmsReadUInt64Number(cmsIOHANDLER* io, cmsUInt64Number* n);
CMSAPI cmsBool           CMSEXPORT  _cmsRead15Fixed16Number(cmsIOHANDLER* io, cmsFloat64Number* n);
CMSAPI cmsBool           CMSEXPORT  _cmsReadXYZNumber(cmsIOHANDLER* io, cmsCIEXYZ* XYZ);
CMSAPI cmsBool           CMSEXPORT  _cmsReadUInt16Array(cmsIOHANDLER* io, cmsUInt32Number n, cmsUInt16Number* Array);

CMSAPI cmsBool           CMSEXPORT  _cmsWriteUInt8Number(cmsIOHANDLER* io, cmsUInt8Number n);
CMSAPI cmsBool           CMSEXPORT  _cmsWriteUInt16Number(cmsIOHANDLER* io, cmsUInt16Number n);
CMSAPI cmsBool           CMSEXPORT  _cmsWriteUInt32Number(cmsIOHANDLER* io, cmsUInt32Number n);
CMSAPI cmsBool           CMSEXPORT  _cmsWriteFloat32Number(cmsIOHANDLER* io, cmsFloat32Number n);
CMSAPI cmsBool           CMSEXPORT  _cmsWriteUInt64Number(cmsIOHANDLER* io, cmsUInt64Number* n);
CMSAPI cmsBool           CMSEXPORT  _cmsWrite15Fixed16Number(cmsIOHANDLER* io, cmsFloat64Number n);
CMSAPI cmsBool           CMSEXPORT  _cmsWriteXYZNumber(cmsIOHANDLER* io, const cmsCIEXYZ* XYZ);
CMSAPI cmsBool           CMSEXPORT  _cmsWriteUInt16Array(cmsIOHANDLER* io, cmsUInt32Number n, const cmsUInt16Number* Array);

// ICC base tag
typedef struct {
    cmsTagTypeSignature  sig;
    cmsInt8Number        reserved[4];

} _cmsTagBase;

// Type base helper functions
CMSAPI cmsTagTypeSignature  CMSEXPORT _cmsReadTypeBase(cmsIOHANDLER* io);
CMSAPI cmsBool              CMSEXPORT _cmsWriteTypeBase(cmsIOHANDLER* io, cmsTagTypeSignature sig);

// Alignment functions
CMSAPI cmsBool             CMSEXPORT _cmsReadAlignment(cmsIOHANDLER* io);
CMSAPI cmsBool             CMSEXPORT _cmsWriteAlignment(cmsIOHANDLER* io);

// To deal with text streams. 2K at most
CMSAPI cmsBool             CMSEXPORT _cmsIOPrintf(cmsIOHANDLER* io, const char* frm, ...);

// Fixed point helper functions
CMSAPI cmsFloat64Number    CMSEXPORT _cms8Fixed8toDouble(cmsUInt16Number fixed8);
CMSAPI cmsUInt16Number     CMSEXPORT _cmsDoubleTo8Fixed8(cmsFloat64Number val);

CMSAPI cmsFloat64Number    CMSEXPORT _cms15Fixed16toDouble(cmsS15Fixed16Number fix32);
CMSAPI cmsS15Fixed16Number CMSEXPORT _cmsDoubleTo15Fixed16(cmsFloat64Number v);

// Date/time helper functions
CMSAPI void                CMSEXPORT _cmsEncodeDateTimeNumber(cmsDateTimeNumber *Dest, const struct tm *Source);
CMSAPI void                CMSEXPORT _cmsDecodeDateTimeNumber(const cmsDateTimeNumber *Source, struct tm *Dest);

//----------------------------------------------------------------------------------------------------------

// Shared callbacks for user data
typedef void     (* _cmsFreeUserDataFn)(cmsContext ContextID, void* Data);
typedef void*    (* _cmsDupUserDataFn)(cmsContext ContextID, const void* Data);

//----------------------------------------------------------------------------------------------------------

// Plug-in foundation
#define cmsPluginMagicNumber                 0x61637070     // 'acpp'

#define cmsPluginMemHandlerSig               0x6D656D48     // 'memH'
#define cmsPluginInterpolationSig            0x696E7048     // 'inpH'
#define cmsPluginParametricCurveSig          0x70617248     // 'parH'
#define cmsPluginFormattersSig               0x66726D48     // 'frmH
#define cmsPluginTagTypeSig                  0x74797048     // 'typH'
#define cmsPluginTagSig                      0x74616748     // 'tagH'
#define cmsPluginRenderingIntentSig          0x696E7448     // 'intH'
#define cmsPluginMultiProcessElementSig      0x6D706548     // 'mpeH'
#define cmsPluginOptimizationSig             0x6F707448     // 'optH'
#define cmsPluginTransformSig                0x7A666D48     // 'xfmH'

typedef struct _cmsPluginBaseStruct {

        cmsUInt32Number                Magic;               // 'acpp' signature
        cmsUInt32Number                ExpectedVersion;     // Expected version of LittleCMS
        cmsUInt32Number                Type;                // Type of plug-in
        struct _cmsPluginBaseStruct*   Next;                // For multiple plugin definition. NULL for end of list.

} cmsPluginBase;

// Maximum number of types in a plugin array
#define MAX_TYPES_IN_LCMS_PLUGIN    20

//----------------------------------------------------------------------------------------------------------

// Memory handler. Each new plug-in type replaces current behaviour
typedef struct {

        cmsPluginBase base;

        // Required
        void * (* MallocPtr)(cmsContext ContextID, cmsUInt32Number size);
        void   (* FreePtr)(cmsContext ContextID, void *Ptr);
        void * (* ReallocPtr)(cmsContext ContextID, void* Ptr, cmsUInt32Number NewSize);

        // Optional
        void * (* MallocZeroPtr)(cmsContext ContextID, cmsUInt32Number size);
        void * (* CallocPtr)(cmsContext ContextID, cmsUInt32Number num, cmsUInt32Number size);
        void * (* DupPtr)(cmsContext ContextID, const void* Org, cmsUInt32Number size);

} cmsPluginMemHandler;


// ------------------------------------------------------------------------------------------------------------------

// Interpolation. 16 bits and floating point versions.
struct _cms_interp_struc;

// Interpolation callbacks

// 16 bits forward interpolation. This function performs precision-limited linear interpolation
// and is supposed to be quite fast. Implementation may be tetrahedral or trilinear, and plug-ins may
// choose to implement any other interpolation algorithm.
typedef void (* _cmsInterpFn16)(register const cmsUInt16Number Input[],
                                register cmsUInt16Number Output[],
                                register const struct _cms_interp_struc* p);

// Floating point forward interpolation. Full precision interpolation using floats. This is not a
// time critical function. Implementation may be tetrahedral or trilinear, and plug-ins may
// choose to implement any other interpolation algorithm.
typedef void (* _cmsInterpFnFloat)(cmsFloat32Number const Input[],
                                   cmsFloat32Number Output[],
                                   const struct _cms_interp_struc* p);



// This type holds a pointer to an interpolator that can be either 16 bits or float
typedef union {
    _cmsInterpFn16       Lerp16;            // Forward interpolation in 16 bits
    _cmsInterpFnFloat    LerpFloat;         // Forward interpolation in floating point
} cmsInterpFunction;

// Flags for interpolator selection
#define CMS_LERP_FLAGS_16BITS             0x0000        // The default
#define CMS_LERP_FLAGS_FLOAT              0x0001        // Requires different implementation
#define CMS_LERP_FLAGS_TRILINEAR          0x0100        // Hint only


#define MAX_INPUT_DIMENSIONS 8

typedef struct _cms_interp_struc {  // Used on all interpolations. Supplied by lcms2 when calling the interpolation function

    cmsContext ContextID;     // The calling thread

    cmsUInt32Number dwFlags;  // Keep original flags
    cmsUInt32Number nInputs;  // != 1 only in 3D interpolation
    cmsUInt32Number nOutputs; // != 1 only in 3D interpolation

    cmsUInt32Number nSamples[MAX_INPUT_DIMENSIONS];  // Valid on all kinds of tables
    cmsUInt32Number Domain[MAX_INPUT_DIMENSIONS];    // Domain = nSamples - 1

    cmsUInt32Number opta[MAX_INPUT_DIMENSIONS];     // Optimization for 3D CLUT. This is the number of nodes premultiplied for each
                                                    // dimension. For example, in 7 nodes, 7, 7^2 , 7^3, 7^4, etc. On non-regular
                                                    // Samplings may vary according of the number of nodes for each dimension.

    const void *Table;                // Points to the actual interpolation table
    cmsInterpFunction Interpolation;  // Points to the function to do the interpolation

 } cmsInterpParams;

// Interpolators factory
typedef cmsInterpFunction (* cmsInterpFnFactory)(cmsUInt32Number nInputChannels, cmsUInt32Number nOutputChannels, cmsUInt32Number dwFlags);

// The plug-in
typedef struct {
    cmsPluginBase base;

    // Points to a user-supplied function which implements the factory
    cmsInterpFnFactory InterpolatorsFactory;

} cmsPluginInterpolation;

//----------------------------------------------------------------------------------------------------------

// Parametric curves. A negative type means same function but analytically inverted. Max. number of params is 10

// Evaluator callback for user-suplied parametric curves. May implement more than one type
typedef  cmsFloat64Number (* cmsParametricCurveEvaluator)(cmsInt32Number Type, const cmsFloat64Number Params[10], cmsFloat64Number R);

// Plug-in may implement an arbitrary number of parametric curves
typedef struct {
    cmsPluginBase base;

    cmsUInt32Number nFunctions;                                     // Number of supported functions
    cmsUInt32Number FunctionTypes[MAX_TYPES_IN_LCMS_PLUGIN];        // The identification types
    cmsUInt32Number ParameterCount[MAX_TYPES_IN_LCMS_PLUGIN];       // Number of parameters for each function

    cmsParametricCurveEvaluator    Evaluator;                       // The evaluator

} cmsPluginParametricCurves;
//----------------------------------------------------------------------------------------------------------

// Formatters. This plug-in adds new handlers, replacing them if they already exist. Formatters dealing with
// cmsFloat32Number (bps = 4) or double (bps = 0) types are requested via FormatterFloat callback. Others come across
// Formatter16 callback

struct _cmstransform_struct;

typedef cmsUInt8Number* (* cmsFormatter16)(register struct _cmstransform_struct* CMMcargo,
                                           register cmsUInt16Number Values[],
                                           register cmsUInt8Number*  Buffer,
                                           register cmsUInt32Number  Stride);

typedef cmsUInt8Number* (* cmsFormatterFloat)(struct _cmstransform_struct* CMMcargo,
                                              cmsFloat32Number Values[],
                                              cmsUInt8Number*  Buffer,
                                              cmsUInt32Number  Stride);

// This type holds a pointer to a formatter that can be either 16 bits or cmsFloat32Number
typedef union {
    cmsFormatter16    Fmt16;
    cmsFormatterFloat FmtFloat;

} cmsFormatter;

#define CMS_PACK_FLAGS_16BITS       0x0000
#define CMS_PACK_FLAGS_FLOAT        0x0001

typedef enum { cmsFormatterInput=0, cmsFormatterOutput=1 } cmsFormatterDirection;

typedef cmsFormatter (* cmsFormatterFactory)(cmsUInt32Number Type,           // Specific type, i.e. TYPE_RGB_8
                                             cmsFormatterDirection Dir,
                                             cmsUInt32Number dwFlags);      // precision

// Plug-in may implement an arbitrary number of formatters
typedef struct {
    cmsPluginBase          base;
    cmsFormatterFactory    FormattersFactory;

} cmsPluginFormatters;

//----------------------------------------------------------------------------------------------------------

// Tag type handler. Each type is free to return anything it wants, and it is up to the caller to
// know in advance what is the type contained in the tag.
typedef struct _cms_typehandler_struct {

        cmsTagTypeSignature Signature;     // The signature of the type

        // Allocates and reads items
        void *   (* ReadPtr)(struct _cms_typehandler_struct* self,
                             cmsIOHANDLER*      io,
                             cmsUInt32Number*   nItems,
                             cmsUInt32Number    SizeOfTag);

        // Writes n Items
        cmsBool  (* WritePtr)(struct _cms_typehandler_struct* self,
                              cmsIOHANDLER*     io,
                              void*             Ptr,
                              cmsUInt32Number   nItems);

        // Duplicate an item or array of items
        void*   (* DupPtr)(struct _cms_typehandler_struct* self,
                           const void *Ptr,
                           cmsUInt32Number n);

        // Free all resources
        void    (* FreePtr)(struct _cms_typehandler_struct* self,
                            void *Ptr);

        // Additional parameters used by the calling thread
        cmsContext       ContextID;
        cmsUInt32Number  ICCVersion;

} cmsTagTypeHandler;

// Each plug-in implements a single type
typedef struct {
        cmsPluginBase      base;
        cmsTagTypeHandler  Handler;

} cmsPluginTagType;

//----------------------------------------------------------------------------------------------------------

// This is the tag plugin, which identifies tags. For writing, a pointer to function is provided.
// This function should return the desired type for this tag, given the version of profile
// and the data being serialized.
typedef struct {

    cmsUInt32Number     ElemCount;          // If this tag needs an array, how many elements should keep

    // For reading.
    cmsUInt32Number     nSupportedTypes;    // In how many types this tag can come (MAX_TYPES_IN_LCMS_PLUGIN maximum)
    cmsTagTypeSignature SupportedTypes[MAX_TYPES_IN_LCMS_PLUGIN];

    // For writting
    cmsTagTypeSignature (* DecideType)(cmsFloat64Number ICCVersion, const void *Data);

} cmsTagDescriptor;

// Plug-in implements a single tag
typedef struct {
    cmsPluginBase    base;

    cmsTagSignature  Signature;
    cmsTagDescriptor Descriptor;

} cmsPluginTag;

//----------------------------------------------------------------------------------------------------------

// Custom intents. This function should join all profiles specified in the array in
// a single LUT. Any custom intent in the chain redirects to custom function. If more than
// one custom intent is found, the one located first is invoked. Usually users should use only one
// custom intent, so mixing custom intents in same multiprofile transform is not supported.

typedef cmsPipeline* (* cmsIntentFn)( cmsContext       ContextID,
                                      cmsUInt32Number  nProfiles,
                                      cmsUInt32Number  Intents[],
                                      cmsHPROFILE      hProfiles[],
                                      cmsBool          BPC[],
                                      cmsFloat64Number AdaptationStates[],
                                      cmsUInt32Number  dwFlags);


// Each plug-in defines a single intent number.
typedef struct {
    cmsPluginBase     base;
    cmsUInt32Number   Intent;
    cmsIntentFn       Link;
    char              Description[256];

} cmsPluginRenderingIntent;


// The default ICC intents (perceptual, saturation, rel.col and abs.col)
CMSAPI cmsPipeline*  CMSEXPORT _cmsDefaultICCintents(cmsContext       ContextID,
                                                     cmsUInt32Number  nProfiles,
                                                     cmsUInt32Number  Intents[],
                                                     cmsHPROFILE      hProfiles[],
                                                     cmsBool          BPC[],
                                                     cmsFloat64Number AdaptationStates[],
                                                     cmsUInt32Number  dwFlags);


//----------------------------------------------------------------------------------------------------------

// Pipelines, Multi Process Elements.

typedef void (* _cmsStageEvalFn)     (const cmsFloat32Number In[], cmsFloat32Number Out[], const cmsStage* mpe);
typedef void*(* _cmsStageDupElemFn)  (cmsStage* mpe);
typedef void (* _cmsStageFreeElemFn) (cmsStage* mpe);


// This function allocates a generic MPE
CMSAPI cmsStage* CMSEXPORT _cmsStageAllocPlaceholder(cmsContext ContextID,
                                cmsStageSignature     Type,
                                cmsUInt32Number       InputChannels,
                                cmsUInt32Number       OutputChannels,
                                _cmsStageEvalFn       EvalPtr,            // Points to fn that evaluates the element (always in floating point)
                                _cmsStageDupElemFn    DupElemPtr,         // Points to a fn that duplicates the stage
                                _cmsStageFreeElemFn   FreePtr,            // Points to a fn that sets the element free
                                void*                 Data);              // A generic pointer to whatever memory needed by the element
typedef struct {
      cmsPluginBase     base;
      cmsTagTypeHandler Handler;

}  cmsPluginMultiProcessElement;


// Data kept in "Element" member of cmsStage

// Curves
typedef struct {
    cmsUInt32Number nCurves;
    cmsToneCurve**  TheCurves;

} _cmsStageToneCurvesData;

// Matrix
typedef struct {
    cmsFloat64Number*  Double;          // floating point for the matrix
    cmsFloat64Number*  Offset;          // The offset

} _cmsStageMatrixData;

// CLUT
typedef struct {

    union {                       // Can have only one of both representations at same time
        cmsUInt16Number*  T;      // Points to the table 16 bits table
        cmsFloat32Number* TFloat; // Points to the cmsFloat32Number table

    } Tab;

    cmsInterpParams* Params;
    cmsUInt32Number  nEntries;
    cmsBool          HasFloatValues;

} _cmsStageCLutData;


//----------------------------------------------------------------------------------------------------------
// Optimization. Using this plug-in, additional optimization strategies may be implemented.
// The function should return TRUE if any optimization is done on the LUT, this terminates
// the optimization  search. Or FALSE if it is unable to optimize and want to give a chance
// to the rest of optimizers.

typedef void     (* _cmsOPTeval16Fn)(register const cmsUInt16Number In[],
                                     register cmsUInt16Number Out[],
                                     register const void* Data);


typedef cmsBool  (* _cmsOPToptimizeFn)(cmsPipeline** Lut,
                                       cmsUInt32Number  Intent,
                                       cmsUInt32Number* InputFormat,
                                       cmsUInt32Number* OutputFormat,
                                       cmsUInt32Number* dwFlags);

// This function may be used to set the optional evaluator and a block of private data. If private data is being used, an optional
// duplicator and free functions should also be specified in order to duplicate the LUT construct. Use NULL to inhibit such functionality.

CMSAPI void CMSEXPORT _cmsPipelineSetOptimizationParameters(cmsPipeline* Lut,
                                               _cmsOPTeval16Fn Eval16,
                                               void* PrivateData,
                                               _cmsFreeUserDataFn FreePrivateDataFn,
                                               _cmsDupUserDataFn DupPrivateDataFn);

typedef struct {
      cmsPluginBase     base;

      // Optimize entry point
      _cmsOPToptimizeFn  OptimizePtr;

}  cmsPluginOptimization;

//----------------------------------------------------------------------------------------------------------
// Full xform
typedef void     (* _cmsTransformFn)(struct _cmstransform_struct *CMMcargo,
                                     const void* InputBuffer,
                                     void* OutputBuffer,
                                     cmsUInt32Number Size,
                                     cmsUInt32Number Stride);

typedef cmsBool  (* _cmsTransformFactory)(_cmsTransformFn* xform,
                                         void** UserData,
                                         _cmsFreeUserDataFn* FreePrivateDataFn,
                                         cmsPipeline** Lut,
                                         cmsUInt32Number* InputFormat,
                                         cmsUInt32Number* OutputFormat,
                                         cmsUInt32Number* dwFlags);


// Retrieve user data as specified by the factory
CMSAPI void   CMSEXPORT _cmsSetTransformUserData(struct _cmstransform_struct *CMMcargo, void* ptr, _cmsFreeUserDataFn FreePrivateDataFn);
CMSAPI void * CMSEXPORT _cmsGetTransformUserData(struct _cmstransform_struct *CMMcargo);


// Retrieve formatters
CMSAPI void   CMSEXPORT _cmsGetTransformFormatters16   (struct _cmstransform_struct *CMMcargo, cmsFormatter16* FromInput, cmsFormatter16* ToOutput);
CMSAPI void   CMSEXPORT _cmsGetTransformFormattersFloat(struct _cmstransform_struct *CMMcargo, cmsFormatterFloat* FromInput, cmsFormatterFloat* ToOutput);

typedef struct {
      cmsPluginBase     base;

      // Transform entry point
      _cmsTransformFactory  Factory;

}  cmsPluginTransform;


#ifndef CMS_USE_CPP_API
#   ifdef __cplusplus
    }
#   endif
#endif

#define _lcms_plugin_H
#endif

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