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loadData.c

/* $Xorg: loadData.c,v 1.4 2000/08/17 19:54:13 cpqbld Exp $ */

/*
 * (c) Copyright 1990 Tektronix Inc.
 *    All Rights Reserved
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose and without fee is hereby granted,
 * provided that the above copyright notice appear in all copies and that
 * both that copyright notice and this permission notice appear in
 * supporting documentation, and that the name of Tektronix not be used
 * in advertising or publicity pertaining to distribution of the software
 * without specific, written prior permission.
 *
 * Tektronix disclaims all warranties with regard to this software, including
 * all implied warranties of merchantability and fitness, in no event shall
 * Tektronix be liable for any special, indirect or consequential damages or
 * any damages whatsoever resulting from loss of use, data or profits,
 * whether in an action of contract, negligence or other tortious action,
 * arising out of or in connection with the use or performance of this
 * software.
 *
 *
 *    NAME
 *          LoadSCCData.c
 *
 *    DESCRIPTION
 *          TekCMS API routine that reads screen data from a file
 *            and then loads the data on the root window of the screen.
 *          
 *
 *
 */
/* $XFree86: xc/programs/xcmsdb/loadData.c,v 3.3 2001/07/25 15:05:18 dawes Exp $ */

/*
 *      INCLUDES
 */

#include <X11/Xos.h>
#include <sys/stat.h>
#include <stdio.h>

#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include "SCCDFile.h"


/*
 *      EXTERNS
 *              External declarations required locally to this package
 *              that are not already declared in any of the included header
 *          files (external includes or internal includes).
 */

#include <stdlib.h>

/*
 *      LOCAL TYPEDEFS
 *              typedefs local to this package (for use with local vars).
 *
 */

typedef struct _DefineEntry {
    char    *pString;
    int           define;
} DefineEntry;


/*
 *      LOCAL VARIABLES
 */
static int linenum = 0;

static DefineEntry KeyTbl[] = {
    { SC_BEGIN_KEYWORD,             SC_BEGIN },
    { SC_END_KEYWORD,               SC_END },
    { COMMENT_KEYWORD,              COMMENT },
    { NAME_KEYWORD,                 NAME },
    { MODEL_KEYWORD,                MODEL },
    { PART_NUMBER_KEYWORD,          PART_NUMBER },
    { SERIAL_NUMBER_KEYWORD,        SERIAL_NUMBER },
    { REVISION_KEYWORD,             REVISION },
    { SCREEN_CLASS_KEYWORD,         SCREEN_CLASS },
    { COLORIMETRIC_BEGIN_KEYWORD,   COLORIMETRIC_BEGIN },
    { COLORIMETRIC_END_KEYWORD,           COLORIMETRIC_END },
    { XYZTORGBMAT_BEGIN_KEYWORD,    XYZTORGBMAT_BEGIN },
    { XYZTORGBMAT_END_KEYWORD,            XYZTORGBMAT_END },
    { WHITEPT_XYZ_BEGIN_KEYWORD,    WHITEPT_XYZ_BEGIN },
    { WHITEPT_XYZ_END_KEYWORD,            WHITEPT_XYZ_END },
    { RGBTOXYZMAT_BEGIN_KEYWORD,    RGBTOXYZMAT_BEGIN },
    { RGBTOXYZMAT_END_KEYWORD,            RGBTOXYZMAT_END },
    { IPROFILE_BEGIN_KEYWORD,       IPROFILE_BEGIN },
    { IPROFILE_END_KEYWORD,         IPROFILE_END },
    { ITBL_BEGIN_KEYWORD,           ITBL_BEGIN },
    { ITBL_END_KEYWORD,             ITBL_END },
    { "",                     -1 }
};

static DefineEntry ScrnClassTbl[] = {
    { VIDEO_RGB_KEYWORD,            VIDEO_RGB },
#ifdef GRAY
    { VIDEO_GRAY_KEYWORD,           VIDEO_GRAY },
#endif /* GRAY */
    { "",                     -1 }
};

#define KEY_VISUALID          1
#define KEY_DEPTH       2
#define KEY_CLASS       3
#define KEY_RED_MASK          4
#define KEY_GREEN_MASK        5
#define KEY_BLUE_MASK         6
#define KEY_COLORMAP_SIZE     7
#define KEY_BITS_PER_RGB      8

static DefineEntry VisualOptKeyTbl[] = {
    { "visualid",       KEY_VISUALID },
    { "depth",                KEY_DEPTH },
    { "class",                KEY_CLASS },
    { "red_mask",       KEY_RED_MASK },
    { "green_mask",           KEY_GREEN_MASK },
    { "blue_mask",            KEY_BLUE_MASK },
    { "colormap_size",        KEY_COLORMAP_SIZE },
    { "bits_per_rgb",         KEY_BITS_PER_RGB },
    { "",                     -1 }
};
static DefineEntry VisualClassTbl[] = {
    { "StaticGray",           StaticGray },
    { "GrayScale",            GrayScale },
    { "StaticColor",          StaticColor },
    { "PseudoColor",          PseudoColor },
    { "TrueColor",            TrueColor },
    { "DirectColor",          DirectColor },
    { "",                     -1 }
};


/************************************************************************
 *                                                    *
 *                 PRIVATE ROUTINES                   *
 *                                                    *
 ************************************************************************/

/*
 *    NAME
 *          StrToDefine - convert a string to a define
 *
 *    SYNOPSIS
 */
static int
StrToDefine(DefineEntry pde[],      /* IN: table of X string-define pairs     */
                        /*     last entry must contain pair "", 0 */
          char *pstring)      /* IN: string to be looked up in that table */
/*
 *    DESCRIPTION
 *          Converts a string to an integer define.
 *
 *          Looks up the string in the table and returns the integer
 *          associated with the string.
 *
 *          Later may need similar function for unsigned long define.
 *
 *
 *
 *    RETURNS
 *          The int equivalent of the defined string.
 *          -1 if the string is not found in table
 *
 */
{
    while( strcmp(pde->pString,"") != 0 ){
      if( strcmp(pde->pString,pstring) == 0){
          return(pde->define);
      }
      pde++;
    }
    return(-1);
}

/*
 *    NAME
 *          DefineToStr
 *
 *    SYNOPSIS
 */
static char *
DefineToStr(DefineEntry pde[],      /* IN: table of X string-define pairs */
                        /*     last entry must contain pair "", 0 */
          int id)       /* IN: id to be looked up in that table   */
/*
 *    DESCRIPTION
 *          Converts a string to an integer define.
 *
 *          Looks up the string in the table and returns the integer
 *          associated with the string.
 *
 *          Later may need similar function for unsigned long define.
 *
 *
 *
 *    RETURNS
 *          The int equivalent of the defined string.
 *          -1 if the string is not found in table
 *
 */
{
    while(pde->define != -1) {
      if (pde->define == id) {
          return(pde->pString);
      }
      pde++;
    }
    return(NULL);
}

/*
 *    NAME
 *          SCKeyOf - convert keyword into key ID
 *
 *    SYNOPSIS
 */
static int
SCKeyOf(char *string)
/*
 *    DESCRIPTION
 *          Converts a string to an integer define.
 *
 *          Looks up the string in the table and returns the integer
 *          associated with the string.
 *
 *          Later may need similar function for unsigned long define.
 *
 *
 *
 *    RETURNS
 *          The int equivalent of the defined string.
 *          -1 if the string is not found in table
 *
 */
{
    return(StrToDefine(KeyTbl, string));
}


/*
 *    NAME
 *          SCScrnClassOf - convert screen class string into class ID
 *
 *    SYNOPSIS
 */
static int
SCScrnClassOf(char *string)
/*
 *    DESCRIPTION
 *          Converts a string to an integer define.
 *
 *          Looks up the string in the table and returns the integer
 *          associated with the string.
 *
 *          Later may need similar function for unsigned long define.
 *
 *
 *
 *    RETURNS
 *          The int equivalent of the defined string.
 *          -1 if the string is not found in table
 *
 */
{
    return(StrToDefine(ScrnClassTbl, string));
}


/*
 *    NAME
 *          SCScrnClassStringOf - convert screen class id into class string
 *
 *    SYNOPSIS
 */
static char *
SCScrnClassStringOf(int id)
/*
 *    DESCRIPTION
 *          Converts a id to astring
 *
 *    RETURNS
 *          Pointer to string if found; otherwise NULL.
 *
 */
{
    return(DefineToStr(ScrnClassTbl, id));
}

/* close the stream and return any memory allocated. */
/*ARGSUSED*/
static void 
closeS(FILE *stream, XDCCC_Correction *pCorrection) 
{
    XDCCC_Correction* pNext;
    if (stream) {
        fclose (stream);
    }
    while (pCorrection) {
      pNext = pCorrection->next;
      free(pCorrection);
      pCorrection = pNext;
    }
}

/*
 *  Get a line of text from the stream.
 */
static char *
nextline(char *buf, int maxch, FILE *stream)
{
    linenum++;
    return (fgets(buf, maxch, stream));
}


static int
ProcessColorimetric(FILE *stream, XDCCC_Matrix *pMatrix, int VisualFlag)
{
    char buf[BUFSIZ];
    char keyword[BUFSIZ];
    char token[BUFSIZ], *ptoken;
    int  ntok;
    unsigned int matrices_processed = 0;
            /* bit 0 for XYZtoRGB matrix */
            /* bit 1 for RGBtoXYZ matrix */
    int      state = 0;
             /* 0 -- looking for matrix */
             /* 1 -- processing data from matrix */
             /* 2 -- both matrices processed */
             /* Note: the order of the matrices is not important. */
    int      count = -1;
    XcmsFloat *pElement = NULL;

    while ((nextline(buf, BUFSIZ, stream)) != NULL) {
      if ((ntok = sscanf(buf, "%s %s", keyword, token)) > 0) {
          switch (SCKeyOf(keyword)) {
            case XYZTORGBMAT_BEGIN :
            if (VisualFlag != VIDEO_RGB) {
              fprintf(stderr, 
                   "Line %d: Keyword XYZTORGBMAT_BEGIN mismatch for visual %s.\n",
                    linenum, SCScrnClassStringOf(VisualFlag));
              return (0);
            }
            if (state != 0) {
              fprintf(stderr,
                    "Line %d: Extraneous keyword %s.\n", 
                    linenum, keyword);
              return (0);
            }
            state = 1;
            count = 0;
            pElement = (XcmsFloat *) pMatrix->XYZtoRGBmatrix;
            break;
            case XYZTORGBMAT_END :
            if (VisualFlag != VIDEO_RGB) {
              fprintf(stderr, 
                    "Line %d: Keyword XYZTORGBMAT_END mismatch for visual %s.\n",
                    linenum, SCScrnClassStringOf(VisualFlag));
              return (0);
            }
            if ((state != 1) || (count != 9)) {
              fprintf(stderr,
                    "Line %d: Incomplete XYZtoRGB matrix -- Premature %s\n", 
                    linenum, keyword);
              return (0);
            }
            matrices_processed |= 0x1;
            if (matrices_processed == 3) {
                state = 2;
            } else {
                state = 0;
            }
            break;
            case RGBTOXYZMAT_BEGIN :
            if (VisualFlag != VIDEO_RGB) {
              fprintf(stderr,
                   "Line %d: Keyword RGBTOXYZMAT_BEGIN mismatch for visual %s.\n",
                    linenum, SCScrnClassStringOf(VisualFlag));
              return (0);
            }
            if (state != 0) {
                fprintf(stderr, "Line %d: Extraneous keyword %s.\n", 
                      linenum, keyword);
                return (0);
            }
            state = 1;
            count = 0;
            pElement = (XcmsFloat *) pMatrix->RGBtoXYZmatrix;
            break;
            case RGBTOXYZMAT_END :
            if (VisualFlag != VIDEO_RGB) {
                fprintf(stderr, 
                     "Line %d: Keyword RGBTOXYZMAT_END mismatch for visual %s.\n",
                      linenum, SCScrnClassStringOf(VisualFlag));
                return (0);
            }
            if ((state != 1) || (count != 9)) {
                fprintf(stderr, 
                     "Line %d: Incomplete RGBtoXYZ matrix -- Premature %s\n", 
                      linenum, keyword);
                return (0);
            }
            matrices_processed |= 0x2;
            if (matrices_processed == 3) {
                state = 2;
            } else {
                state = 0;
            }
            break;
#ifdef GRAY
            case WHITEPT_XYZ_BEGIN :
            if (VisualFlag != VIDEO_GRAY) {
                fprintf(stderr,
                   "Line %d: Keyword WHITEPT_XYZ_BEGIN mismatch for visual %s.\n",
                      linenum, SCScrnClassStringOf(VisualFlag));
                return (0);
            }
            if (state != 0) {
              fprintf(stderr,
                    "Line %d: Extraneous keyword %s.\n", 
                    linenum, keyword);
              return (0);
            }
            state = 1;
            count = 0;
            pElement = (XcmsFloat *) pMatrix->XYZtoRGBmatrix;
            break;
            case WHITEPT_XYZ_END :
            if (VisualFlag != VIDEO_GRAY) {
                fprintf(stderr,
                     "Line %d: Keyword WHITEPT_XYZ_END mismatch for visual %s.\n",
                      linenum, SCScrnClassStringOf(VisualFlag));
                return (0);
            }
            if ((state != 1) || (count != 3)) {
                fprintf(stderr,
                  "Line %d: Incomplete white point -- Premature %s\n", 
                      linenum, keyword);
                return (0);
            }
            state = 2;
            break;
#endif /* GRAY */
            case DATA :
            for (ptoken = strtok(buf, DATA_DELIMS); ptoken != NULL;
                  ptoken = strtok(NULL, DATA_DELIMS)) {
                if (sscanf(ptoken, "%lf", pElement) != 1) {
                  if (VisualFlag == VIDEO_RGB) {
                      fprintf(stderr,
                            "Line %d: Invalid matrix value %s.", 
                            linenum, ptoken);
                  } else {
                      fprintf(stderr,
                            "Line %d: Invalid CIEXYZ value %s.\n",
                            linenum, ptoken);
                  }
                  return (0);
                }
                pElement++;
                if (VisualFlag == VIDEO_RGB) {
                  if (++count > 9) {
                      fprintf(stderr,
                           "Line %d: Extra matrix value %s\n", 
                            linenum, ptoken);
                      return (0);
                  }
                } else {
                  if (++count > 3) {
                      fprintf(stderr,
                            "Line %d: Extra CIEXYZ value %s.\n",
                            linenum, ptoken);
                      return (0);
                    }
                }
            }
            break;
            case COLORIMETRIC_BEGIN :
            fprintf(stderr, 
                  "Line %d: Extraneous keyword %s.\n", 
                  linenum, keyword);
            return (0);
/* NOTREACHED */break;  
            case COLORIMETRIC_END :
            if (state != 2) {
                fprintf(stderr,
               "Line %d: Incomplete Colorimetric data -- Premature %s\n",
                      linenum, keyword);
                return (0);
            }
            return (1);
            case COMMENT :
            /* Currently, do nothing. */
            break;
            default :
            fprintf(stderr,
                  "Line %d: Unexpected keyword %s\n",
                  linenum, keyword);
            return (0);
/* NOTREACHED */break;        
          }
      } else if (ntok < 0) {
          /* mismatch */
          fprintf(stderr, "Line %d: Unrecognized keyword\n", linenum);
          return (0);
/* NOTREACHED */break;        
      }
    }
    return (0);
}

static int
ProcessIProfile(FILE *stream, XDCCC_Correction *pCorrection)
{
    char buf[BUFSIZ];
    char *keyword;
    char *tableStr, *sizeStr, *ptoken;
    int  size;
    int      state = 0;
       /************************************************
        * 0 -- Looking for Intensity Table(s)          *
        * 1 -- Processing Intensity Table(s)           *
          ************************************************/
    int      nTbl = 0;
    int      count = 0;
    IntensityRec *pIRec = NULL;

    while ((nextline(buf, BUFSIZ, stream)) != NULL) {
      ptoken = keyword = strtok(buf, DATA_DELIMS);
      if (keyword != (char*)NULL) {
          switch (SCKeyOf(keyword)) {
            case ITBL_BEGIN :
            if (state != 0) {
                fprintf(stderr,"Line %d: unexpected keyword %s\n", 
                     linenum, keyword);
                return (0);
            }
            tableStr = strtok((char*)NULL, DATA_DELIMS);
            sizeStr = strtok((char*)NULL, DATA_DELIMS);
            if ((sizeStr == (char*)NULL) ||
                  sscanf(sizeStr, "%d", &size) != 1) {
                fprintf(stderr,
                      "Line %d: invalid Intensity Table size, %s.\n",
                        linenum, sizeStr);
                return (0);
            }
            if (size < 0) {
                fprintf(stderr,
                      "Line %d: count %d < 0 for Intensity Table.\n",
                        linenum, size);
                return (0);
            }
            if (strcmp(tableStr, "GREEN") == 0) {
                if (pCorrection->nTables != 3) {
                  fprintf(stderr,"Line %d: incorrect number of tables\n", 
                  linenum);
                  return (0);
                }
                if (pCorrection->pGreenTbl->pBase != NULL) {
                  fprintf(stderr,
                       "Line %d: multiple GREEN Intensity Profiles\n",
                             linenum);
                  return (0);
                }
                pCorrection->pGreenTbl->nEntries = size;
                pCorrection->pGreenTbl->pBase =
                   (IntensityRec *) calloc (size, sizeof(IntensityRec));
                if (!pCorrection->pGreenTbl->pBase) {
                  fprintf(stderr,
                 "Line %d: Unable to allocate space for GREEN Intensity Profile\n", linenum);
                  return (0);
                }
                pIRec = pCorrection->pGreenTbl->pBase;
            } else if (strcmp(tableStr, "BLUE") == 0) {
                if (pCorrection->nTables != 3) {
                  fprintf(stderr,
                        "Line %d: incorrect number of tables\n",
                        linenum);
                  return (0);
                }
                if (pCorrection->pBlueTbl->pBase != NULL) {
                  fprintf(stderr,
                        "Line %d: multiple BLUE Intensity Profiles\n",
                             linenum);
                  return (0);
                }
                pCorrection->pBlueTbl->nEntries = size;
                pCorrection->pBlueTbl->pBase =
                   (IntensityRec *) calloc (size, sizeof(IntensityRec));
                if (!pCorrection->pBlueTbl->pBase) {
                  fprintf(stderr,
                  "Line %d: Unable to allocate space for BLUE Intensity Profile\n", linenum);
                  return (0);
                }
                pIRec = pCorrection->pBlueTbl->pBase;
            } else {
                if (!strcmp(tableStr, "RGB") && pCorrection->nTables != 1) {
                  fprintf(stderr,"Line %d: multiple RGB Intensity Tables",
                        linenum);
                  return (0);
                }
                if (pCorrection->pRedTbl->pBase != NULL) {
                  fprintf(stderr,
              "Line %d: multiple RED or GREEN or BLUE Intensity Tables\n",
                           linenum);
                  return (0);
                }
                pCorrection->pRedTbl->nEntries = size;
                pCorrection->pRedTbl->pBase = 
                   (IntensityRec *) calloc (size, sizeof(IntensityRec));
                if (!pCorrection->pRedTbl->pBase) {
                  fprintf(stderr,
                       "Line %d: Unable to allocate space for intensity table\n", linenum);
                  return (0);
                }
                pIRec = pCorrection->pRedTbl->pBase;
            }
            state = 1;
            count = 0;
            break;
            case ITBL_END :
            if ((state != 1) || (count != size)) {
                fprintf(stderr,
                "Line %d: incomplete Intensity Table -- Premature %s\n",
                    linenum, keyword);
                return (0);
            }
            nTbl++;
            state = 0;
            break;
            case DATA :
            do {
                /********************************************************
                 * Note: tableType should only be 0 or 1 at this point. 
                 *       0 indicates value and intensity stored.
                 *       1 indicates only intensity stored. 
                 ********************************************************/
                if (pCorrection->tableType) {
                  if (sscanf(ptoken, "%lf", &pIRec->intensity) != 1) {
                      fprintf(stderr,
                     "Line %d: invalid Intensity Profile value %s\n", 
                          linenum, ptoken);
                      return (0);
                  }
                  /* With tableType 1 only store the intensity. */
                  pIRec++;
                } else {
                  short tmp;
                  /* Note ansi C can handle 0x preceeding hex number */
                  if (sscanf(ptoken, "%hi", &tmp) != 1) {
                      fprintf(stderr,
                      "Line %d: invalid Intensity Profile value %s\n",
                          linenum, ptoken);
                      return (0);
                  } else
                      pIRec->value = tmp;
                  if ((ptoken = strtok(NULL, DATA_DELIMS)) == NULL) {
                      fprintf(stderr,
                          "Line %d: missing Intensity Profile value\n",
                          linenum);
                      return (0);
                  }
                  if (sscanf(ptoken, "%lf", &pIRec->intensity) != 1) {
                      fprintf(stderr,
                  "Line %d: invalid Intensity Profile intensity %s\n",
                          linenum, ptoken);
                      return (0);
                  }
                  /* With tableType 0 only store both value & intensity*/
                  pIRec++;
                }
                if (++count > size) {
                  fprintf(stderr,
                        "Line %d: extra Intensity value %s\n",
                        linenum, ptoken);
                  return (0);
                }
                ptoken = strtok(NULL, DATA_DELIMS);
            } while(ptoken != NULL);
            break;
            case IPROFILE_BEGIN :
            fprintf(stderr,"Line %d: extraneous keyword %s\n", 
                    linenum, keyword);
            return (0);
/* NOTREACHED */break;
            case IPROFILE_END :
            if ((state != 0) || (nTbl != pCorrection->nTables)) {
                fprintf(stderr,
           "Line %d: incomplete Intensity Profile data -- Premature %s\n",
                     linenum, keyword);
                return (0);
            }
            return (1);
            case COMMENT :
            /* ignore line */
            break;
            default :
            fprintf(stderr,"Line %d: unexpected keyword %s\n",
                  linenum, keyword);
            return (0);
/* NOTREACHED */break;
          }
      } /* else its was just a blank line */
    }
    return (0);
}

static void
PutTableType0Card8(IntensityTbl *pTbl, unsigned char **pCard8)
{
    unsigned int count;
    IntensityRec *pIRec;

    pIRec = pTbl->pBase;
    count = pTbl->nEntries;
    **pCard8 = count - 1;
    *pCard8 += 1;
    for (; count; count--, pIRec++) {
      **pCard8 = pIRec->value >> 8;
      *pCard8 += 1;
      **pCard8 = pIRec->intensity * 255.0;
      *pCard8 += 1;
    }
}

static void
PutTableType1Card8(IntensityTbl *pTbl, unsigned char **pCard8)
{
    unsigned int count;
    IntensityRec *pIRec;

    pIRec = pTbl->pBase;
    count = pTbl->nEntries;
    **pCard8 = count - 1;
    *pCard8 += 1;
    for (; count; count--, pIRec++) {
      **pCard8 = pIRec->intensity * 255.0;
      *pCard8 += 1;
    }
}

static void
PutTableType0Card16(IntensityTbl *pTbl, unsigned short **pCard16)
{
    unsigned int count;
    IntensityRec *pIRec;

    pIRec = pTbl->pBase;
    count = pTbl->nEntries;
    **pCard16 = count - 1;
    *pCard16 += 1;
    for (; count; count--, pIRec++) {
      **pCard16 = pIRec->value;
      *pCard16 += 1;
      **pCard16 = pIRec->intensity * 65535.0;
      *pCard16 += 1;
    }
}

static void
PutTableType1Card16(IntensityTbl *pTbl, unsigned short **pCard16)
{
    unsigned int count;
    IntensityRec *pIRec;

    pIRec = pTbl->pBase;
    count = pTbl->nEntries;
    **pCard16 = count - 1;
    *pCard16 += 1;
    for (; count; count--, pIRec++) {
      **pCard16 = pIRec->intensity * 65535.0;
      *pCard16 += 1;
    }
}

static void
PutTableType0Card32(IntensityTbl *pTbl, unsigned long **pCard32)
{
    unsigned int count;
    IntensityRec *pIRec;

    pIRec = pTbl->pBase;
    count = pTbl->nEntries;
    **pCard32 = count - 1;
    *pCard32 += 1;
    for (; count; count--, pIRec++) {
      **pCard32 = pIRec->value;
      *pCard32 += 1;
      **pCard32 = pIRec->intensity * 4294967295.0;
      *pCard32 += 1;
    }
}

static void
PutTableType1Card32(IntensityTbl *pTbl, unsigned long **pCard32)
{
    unsigned int count;
    IntensityRec *pIRec;

    pIRec = pTbl->pBase;
    count = pTbl->nEntries;
    **pCard32 = count - 1;
    *pCard32 += 1;
    for (; count; count--, pIRec++) {
      **pCard32 = pIRec->intensity * 4294967295.0;
      *pCard32 += 1;
    }
}


static void
LoadMatrix(Display *pDpy, Window root, XDCCC_Matrix *pMatrix)
{
    int  count;
    unsigned long  *pCard32;
    unsigned long  Card32Array[18];
    Atom MatricesAtom;
    XcmsFloat *pValue;

    /*
     * Store the XDCCC_LINEAR_RGB_MATRICES
     */
    pCard32 = Card32Array;
    pValue = (XcmsFloat *)pMatrix->XYZtoRGBmatrix;
    for (count = 0; count < 9; count++) {
      *pCard32++ = (unsigned long) (*pValue++ * (XcmsFloat) XDCCC_NUMBER);
    }
    pValue = (XcmsFloat *)pMatrix->RGBtoXYZmatrix;
    for (count = 0; count < 9; count++) {
      *pCard32++ = (unsigned long) (*pValue++ * (XcmsFloat) XDCCC_NUMBER);
    }
    MatricesAtom = XInternAtom (pDpy, XDCCC_MATRIX_ATOM_NAME, False);
    XChangeProperty (pDpy, root, MatricesAtom, XA_INTEGER, 32, 
                 PropModeReplace, (unsigned char *)Card32Array, 18);
}


static int
LoadCorrections(Display *pDpy, Window root, XDCCC_Correction *pCorrection, 
            int targetFormat)
{
    unsigned char  *pCard8;
    unsigned char  *pCard8Array = (unsigned char *)NULL;
    unsigned short  *pCard16;
    unsigned short  *pCard16Array = (unsigned short *)NULL;
    unsigned long  *pCard32;
    unsigned long  *pCard32Array = (unsigned long *)NULL;
    Atom CorrectAtom;
    int     total;
    int i;

    /*
     * Store each XDCCC_CORRECTION into XDCCC_LINEAR_RGB_CORRECTION property
     */
    CorrectAtom = XInternAtom (pDpy, XDCCC_CORRECT_ATOM_NAME, False);

    for (i = 0; pCorrection; i++, pCorrection = pCorrection->next) {
      if ((pCorrection->tableType != 0) && (pCorrection->tableType != 1)) {
          if (pCorrection->visual_info.visualid) {
            fprintf(stderr,"RGB Correction for visualid %ld: Invalid intensity table type %d.\n",
                  pCorrection->visual_info.visualid,
                  pCorrection->tableType);
          } else {
            fprintf(stderr,"Global RGB Correction: Invalid intensity table type %d.\n",
                  pCorrection->tableType);
          }
          return(0);
      }

      if (pCorrection->nTables != 1 && pCorrection->nTables != 3) {
          if (pCorrection->visual_info.visualid) {
            fprintf(stderr,"RGB Correction for visualid %ld: %d invalid number of tables.\n",
                  pCorrection->visual_info.visualid,
                  pCorrection->nTables);
          } else {
            fprintf(stderr,"Global RGB Correction: %d invalid number of tables.\n",
                  pCorrection->nTables);
          }
          return(0);
      }

      if (pCorrection->nTables == 1) {
          if (pCorrection->pRedTbl->nEntries < 2) {
            if (pCorrection->visual_info.visualid) {
                fprintf(stderr,"RGB Correction for visualid %ld: Illegal number of entries in table\n",
                      pCorrection->visual_info.visualid);
            } else {
                fprintf(stderr,"Global RGB Correction: Illegal number of entries in table\n");
            }
            return (0);
          }
          switch (targetFormat) {
            case 8:
            total = 7 + (pCorrection->pRedTbl->nEntries *
                  (pCorrection->tableType == 0 ? 2 : 1));
            if ((pCard8 = pCard8Array = (unsigned char *) calloc (total,
                  sizeof (unsigned char))) == NULL) {
                fprintf(stderr,"Unable allocate array of ints\n");
                return (0);
            }
            *pCard8++ = (pCorrection->visual_info.visualid >> 24) & 0xFF;
            *pCard8++ = (pCorrection->visual_info.visualid >> 16) & 0xFF;
            *pCard8++ = (pCorrection->visual_info.visualid >> 8) & 0xFF;
            *pCard8++ = (pCorrection->visual_info.visualid) & 0xFF;
            *pCard8++ = pCorrection->tableType; /* type */
            *pCard8++ = 1;          /* number of tables = 1 */
            if (pCorrection->tableType == 0) {
                PutTableType0Card8(pCorrection->pRedTbl, &pCard8);
            } else {
                PutTableType1Card8(pCorrection->pRedTbl, &pCard8);
            }
            XChangeProperty (pDpy, root, CorrectAtom, XA_INTEGER, 8, 
                  i ? PropModeAppend : PropModeReplace,
                  (unsigned char *)pCard8Array, total);
            free(pCard8Array);
            break;
            case 16:
            total = 5 + (pCorrection->pRedTbl->nEntries * 
                  (pCorrection->tableType == 0 ? 2 : 1));
            if ((pCard16 = pCard16Array = (unsigned short *) calloc (total,
                  sizeof (unsigned short))) == NULL) {
                fprintf(stderr,"Unable allocate array of ints\n");
                return (0);
            }
            *pCard16++ = (pCorrection->visual_info.visualid >> 16) & 0xFFFF;
            *pCard16++ = (pCorrection->visual_info.visualid) & 0xFFFF;
            *pCard16++ = pCorrection->tableType;      /* type */
            *pCard16++ = 1;         /* number of tables = 1 */
            if (pCorrection->tableType == 0) {
                PutTableType0Card16(pCorrection->pRedTbl, &pCard16);
            } else {
                PutTableType1Card16(pCorrection->pRedTbl, &pCard16);
            }
            XChangeProperty (pDpy, root, CorrectAtom, XA_INTEGER, 16, 
                  i ? PropModeAppend : PropModeReplace,
                  (unsigned char *)pCard16Array, total);
            free(pCard16Array);
            break;
            case 32:
            total = 4 + (pCorrection->pRedTbl->nEntries * 
                  (pCorrection->tableType == 0 ? 2 : 1));
            if ((pCard32 = pCard32Array =
                  (unsigned long *) calloc (total,
                  sizeof (unsigned long))) == NULL) {
                fprintf(stderr,"Unable allocate array of ints\n");
                return (0);
            }
            *pCard32++ = pCorrection->visual_info.visualid;
            *pCard32++ = pCorrection->tableType;      /* type */
            *pCard32++ = 1;         /* number of tables = 1 */
            if (pCorrection->tableType == 0) {
                PutTableType0Card32(pCorrection->pRedTbl, &pCard32);
            } else {
                PutTableType1Card32(pCorrection->pRedTbl, &pCard32);
            }
            XChangeProperty (pDpy, root, CorrectAtom, XA_INTEGER, 32, 
                  i ? PropModeAppend : PropModeReplace,
                  (unsigned char *)pCard32Array, total);
            free(pCard32Array);
            break;
            default:
            if (pCorrection->visual_info.visualid) {
                fprintf(stderr,"RGB Correction for visualid %ld: Invalid property format\n",
                      pCorrection->visual_info.visualid);
            } else {
                fprintf(stderr,"Global RGB Correction: Invalid property format\n");
            }
            return (0);
          }
        } else { /* pCorrection->nTables == 3 */
          if ((pCorrection->pRedTbl->nEntries < 2) ||
                (pCorrection->pGreenTbl->nEntries < 2) ||
                (pCorrection->pBlueTbl->nEntries < 2)) {
            if (pCorrection->visual_info.visualid) {
                fprintf(stderr,"RGB Correction for visualid %ld: Illegal number of entries in table\n",
                      pCorrection->visual_info.visualid);
            } else {
                fprintf(stderr,"Global RGB Correction: Illegal number of entries in table\n");
            }
            return (0);
          }
          switch (targetFormat) {
            case 8:
            total = 9 + /* visualID, type, and 3 lengths */
                (pCorrection->pRedTbl->nEntries * (pCorrection->tableType == 0 ? 2 : 1)) +
                (pCorrection->pGreenTbl->nEntries * (pCorrection->tableType == 0 ? 2 : 1)) +
                (pCorrection->pBlueTbl->nEntries * (pCorrection->tableType == 0 ? 2 : 1));
            if ((pCard8 = pCard8Array =
                  (unsigned char *) calloc (total,
                  sizeof (unsigned char))) == NULL) {
                fprintf(stderr,"Unable allocate array of ints\n");
                return (0);
            }
            *pCard8++ = (pCorrection->visual_info.visualid >> 24) & 0xFF;
            *pCard8++ = (pCorrection->visual_info.visualid >> 16) & 0xFF;
            *pCard8++ = (pCorrection->visual_info.visualid >> 8) & 0xFF;
            *pCard8++ = (pCorrection->visual_info.visualid) & 0xFF;
            *pCard8++ = pCorrection->tableType; /* type */
            *pCard8++ = 3;          /* number of tables = 3 */
            if (pCorrection->tableType == 0) {
                PutTableType0Card8(pCorrection->pRedTbl, &pCard8);
                PutTableType0Card8(pCorrection->pGreenTbl, &pCard8);
                PutTableType0Card8(pCorrection->pBlueTbl, &pCard8);
            } else {
                PutTableType1Card8(pCorrection->pRedTbl, &pCard8);
                PutTableType1Card8(pCorrection->pGreenTbl, &pCard8);
                PutTableType1Card8(pCorrection->pBlueTbl, &pCard8);
            }
            XChangeProperty (pDpy, root, CorrectAtom, XA_INTEGER, 8, 
                  i ? PropModeAppend : PropModeReplace,
                  (unsigned char *)pCard8Array, total);
            free(pCard8Array);
            break;
            case 16:
            total = 7 + /* visualID, type, and 3 lengths */
                (pCorrection->pRedTbl->nEntries * (pCorrection->tableType == 0 ? 2 : 1)) +
                (pCorrection->pGreenTbl->nEntries * (pCorrection->tableType == 0 ? 2 : 1)) +
                (pCorrection->pBlueTbl->nEntries * (pCorrection->tableType == 0 ? 2 : 1));
            if ((pCard16 = pCard16Array =
                  (unsigned short *) calloc (total,
                  sizeof (unsigned short))) == NULL) {
                fprintf(stderr,"Unable allocate array of ints\n");
                return (0);
            }
            *pCard16++ = (pCorrection->visual_info.visualid >> 16) & 0xFFFF;
            *pCard16++ = (pCorrection->visual_info.visualid) & 0xFFFF;
            *pCard16++ = pCorrection->tableType;      /* type = 0 */
            *pCard16++ = 3;         /* number of tables = 3 */
            if (pCorrection->tableType == 0) {
                PutTableType0Card16(pCorrection->pRedTbl, &pCard16);
                PutTableType0Card16(pCorrection->pGreenTbl, &pCard16);
                PutTableType0Card16(pCorrection->pBlueTbl, &pCard16);
            } else {
                PutTableType1Card16(pCorrection->pRedTbl, &pCard16);
                PutTableType1Card16(pCorrection->pGreenTbl, &pCard16);
                PutTableType1Card16(pCorrection->pBlueTbl, &pCard16);
            }
            XChangeProperty (pDpy, root, CorrectAtom, XA_INTEGER, 16, 
                  i ? PropModeAppend : PropModeReplace,
                  (unsigned char *)pCard16Array, total);
            free(pCard16Array);
            break;
            case 32:
            total = 6 + /* visualID, type, and 3 lengths */
                (pCorrection->pRedTbl->nEntries * (pCorrection->tableType == 0 ? 2 : 1)) +
                (pCorrection->pGreenTbl->nEntries * (pCorrection->tableType == 0 ? 2 : 1)) +
                (pCorrection->pBlueTbl->nEntries * (pCorrection->tableType == 0 ? 2 : 1));
            if ((pCard32 = pCard32Array =
                  (unsigned long *) calloc (total,
                  sizeof (unsigned long))) == NULL) {
                fprintf(stderr,"Unable allocate array of ints\n");
                return (0);
            }
            *pCard32++ = pCorrection->visual_info.visualid;
            *pCard32++ = pCorrection->tableType;      /* type */
            *pCard32++ = 3;         /* number of tables = 3 */
            if (pCorrection->tableType == 0) {
                PutTableType0Card32(pCorrection->pRedTbl, &pCard32);
                PutTableType0Card32(pCorrection->pGreenTbl, &pCard32);
                PutTableType0Card32(pCorrection->pBlueTbl, &pCard32);
            } else {
                PutTableType1Card32(pCorrection->pRedTbl, &pCard32);
                PutTableType1Card32(pCorrection->pGreenTbl, &pCard32);
                PutTableType1Card32(pCorrection->pBlueTbl, &pCard32);
            }
            XChangeProperty (pDpy, root, CorrectAtom, XA_INTEGER, 32, 
                  i ? PropModeAppend : PropModeReplace,
                  (unsigned char *)pCard32Array, total);
            free(pCard32Array);
            break;
            default:
            if (pCorrection->visual_info.visualid) {
                fprintf(stderr,"RGB Correction for visualid %ld: Invalid property format\n",
                      pCorrection->visual_info.visualid);
            } else {
                fprintf(stderr,"Global RGB Correction: Invalid property format\n");
            }
            return (0);
          }
      }
    }

    return (1);
}

#ifdef GRAY

static int
LoadDataGray(Display *pDpy, window root, int tableType, 
           LINEAR_RGB_SCCData *pScreenData, int targetFormat)
{
    unsigned char *ret_prop;
    int  count;
    int  nLevels;
    unsigned char  *pCard8;
    unsigned char  *pCard8Array = (unsigned char *)NULL;
    unsigned short  *pCard16;
    unsigned short  *pCard16Array = (unsigned short *)NULL;
    unsigned long  *pCard32;
    unsigned long  *pCard32Array = (unsigned long *)NULL;
    unsigned long  Card32Array[18];
    int  ret_format;
    unsigned long ret_len, ret_after;
    Atom MatricesAtom, CorrectAtom, ret_atom;
    XcmsFloat *pValue;
    int total;

    /* Now store the XDCCC_SCREENWHITEPT */
    pCard32 = Card32Array;
    pValue = (XcmsFloat *)pScreenData->XYZtoRGBmatrix;
    for (count = 0; count < 3; count++) {
      *pCard32++ = (unsigned long) (*pValue++ * (XcmsFloat) XDCCC_NUMBER);
    }
    MatricesAtom = XInternAtom (pDpy,XDCCC_SCREENWHITEPT_ATOM_NAME,False);
    XChangeProperty (pDpy, root, MatricesAtom, XA_INTEGER, 32, 
                 PropModeReplace, (unsigned char *)Card32Array, 3);

    /* Now store the XDCCC_GRAY_CORRECTION */
    CorrectAtom = XInternAtom (pDpy, XDCCC_GRAY_CORRECT_ATOM_NAME, False);

    if (tableType == CORR_TYPE_NONE) {
      XGetWindowProperty (pDpy, root, CorrectAtom, 
                      0, 5, False, XA_INTEGER, 
                      &ret_atom, &ret_format, &ret_len, &ret_after,
                      &ret_prop);
      if (ret_format != 0) {
          XDeleteProperty (pDpy, root, CorrectAtom);
          XFree ((char *)ret_prop);
      }
      return (1);
    }
    nLevels = pScreenData->pRedTbl->nEntries;
    if (nLevels < 2) {
      fprintf(stderr,"Illegal number of entries in table\n");
      return (0);
    }
    switch (targetFormat) {
      case 8:
      total = 6 /* visualID, type, length */
            + (nLevels * (tableType == 0 ? 2 : 1));
      if ((pCard8 = pCard8Array = (unsigned char *)
            calloc (total, sizeof (unsigned char))) == NULL) {
          fprintf(stderr,"Unable allocate array of Card8\n");
          return (0);
      }
      *pCard8++ = 0;          /* VisualID = 0 */
      *pCard8++ = 0;          /* VisualID = 0 */
      *pCard8++ = 0;          /* VisualID = 0 */
      *pCard8++ = 0;          /* VisualID = 0 */
      *pCard8++ = tableType;  /* type */
      if (tableType == 0) {
          PutTableType0Card8(pScreenData->pRedTbl, &pCard8);
      } else { /* tableType == 1 */
          PutTableType1Card8(pScreenData->pRedTbl, &pCard8);
      }
      XChangeProperty (pDpy, root, CorrectAtom, XA_INTEGER, 8, 
                   PropModeReplace, (unsigned char *)pCard8Array,
                   total);
      free (pCard8Array);
      break;
      case 16:
      total = 4 /* visualID, type, length */
            + (nLevels * (tableType == 0 ? 2 : 1));
      if ((pCard16 = pCard16Array = (unsigned short *)
            calloc (total, sizeof (unsigned short))) == NULL) {
          fprintf(stderr,"Unable allocate array of Card16\n");
          return (0);
      }
      *pCard16++ = 0;         /* VisualID = 0 */
      *pCard16++ = 0;         /* VisualID = 0 */
      *pCard16++ = tableType; /* type */
      if (tableType == 0) {
          PutTableType0Card16(pScreenData->pRedTbl, &pCard16);
      } else { /* tableType == 1 */
          PutTableType1Card16(pScreenData->pRedTbl, &pCard16);
      }
      XChangeProperty (pDpy, root, CorrectAtom, XA_INTEGER, 16, 
                   PropModeReplace, (unsigned char *)pCard16Array,
                   total);
      free (pCard16Array);
      break;
      case 32:
      total = 3 /* visualID, type, length */
            + (nLevels * (tableType == 0 ? 2 : 1));
      if ((pCard32 = pCard32Array = (unsigned long *)
            calloc (total, sizeof (unsigned long))) == NULL) {
          fprintf(stderr,"Unable allocate array of Card32\n");
          return (0);
      }
      *pCard32++ = 0;         /* VisualID = 0 */
      *pCard32++ = tableType; /* type */
      if (tableType == 0) {
          PutTableType0Card32(pScreenData->pRedTbl, &pCard32);
      } else { /* tableType == 1 */
          PutTableType1Card32(pScreenData->pRedTbl, &pCard32);
      }
      XChangeProperty (pDpy, root, CorrectAtom, XA_INTEGER, 32, 
                   PropModeReplace, (unsigned char *)pCard32Array,
                   total);
      free (pCard32Array);
      break;
      default:
      fprintf(stderr,"Invalid property format\n");
      return (0);
    }
    return (1);
}
#endif /* GRAY */


static void
PrintVisualOptions(XDCCC_Correction *pCorrection)
{
    if (pCorrection->visual_info_mask & VisualIDMask) {
      fprintf(stderr, "\t%s:0x%lx\n",
            DefineToStr(VisualOptKeyTbl, KEY_VISUALID),
            (unsigned long)pCorrection->visual_info.visualid);
    }
    if (pCorrection->visual_info_mask & VisualDepthMask) {
      fprintf(stderr, "\t%s:%d\n",
            DefineToStr(VisualOptKeyTbl, KEY_DEPTH),
            pCorrection->visual_info.depth);
    }
    if (pCorrection->visual_info_mask & VisualClassMask) {
      fprintf(stderr, "\t%s:%s\n",
            DefineToStr(VisualOptKeyTbl, KEY_CLASS),
            DefineToStr(VisualClassTbl, pCorrection->visual_info.class));
    }
    if (pCorrection->visual_info_mask & VisualRedMaskMask) {
      fprintf(stderr, "\t%s:0x%lx\n",
            DefineToStr(VisualOptKeyTbl, KEY_RED_MASK),
            pCorrection->visual_info.red_mask);
    }
    if (pCorrection->visual_info_mask & VisualGreenMaskMask) {
      fprintf(stderr, "\t%s:0x%lx\n",
            DefineToStr(VisualOptKeyTbl, KEY_GREEN_MASK),
            pCorrection->visual_info.green_mask);
    }
    if (pCorrection->visual_info_mask & VisualBlueMaskMask) {
      fprintf(stderr, "\t%s:0x%lx\n",
            DefineToStr(VisualOptKeyTbl, KEY_BLUE_MASK),
            pCorrection->visual_info.blue_mask);
    }
    if (pCorrection->visual_info_mask & VisualColormapSizeMask) {
      fprintf(stderr, "\t%s:0x%x\n",
            DefineToStr(VisualOptKeyTbl, KEY_COLORMAP_SIZE),
            pCorrection->visual_info.colormap_size);
    }
    if (pCorrection->visual_info_mask & VisualBitsPerRGBMask) {
      fprintf(stderr, "\t%s:%d\n",
            DefineToStr(VisualOptKeyTbl, KEY_BITS_PER_RGB),
            pCorrection->visual_info.bits_per_rgb);
    }
}


static int
ParseVisualOptions(Display *pDpy, XDCCC_Correction *pCorrection, char *pbuf)
{
    char *key;
    char *value;
    XVisualInfo *vinfo;
    int n_matches;
    char delims[8];

    strcpy(delims, DATA_DELIMS);
    strcat(delims, ":");
    pCorrection->visual_info_mask = VisualNoMask;
    key = strtok(pbuf, delims);
    do {
      long tmp;
      value = strtok((char*)NULL, delims);
      if ((key == (char*)NULL) || (value == (char*)NULL)) {
          return (0);
      }
      switch (StrToDefine(VisualOptKeyTbl, key)) {
        case  KEY_VISUALID:
          if (sscanf(value, "%li", &tmp) != 1) {
            fprintf(stderr,
                  "Line %d: invalid VisualID specified, %s\n",
                  linenum, value);
            return (0);
          } else
            pCorrection->visual_info.visualid = tmp;
          pCorrection->visual_info_mask |= VisualIDMask;
          break;
        case  KEY_DEPTH:
          if (sscanf(value, "%i", &pCorrection->visual_info.depth) != 1) {
            fprintf(stderr,
                  "Line %d: invalid depth specified, %s\n",
                  linenum, value);
            return (0);
          } 
          pCorrection->visual_info_mask |= VisualDepthMask;
          break;
        case  KEY_CLASS:
          switch (pCorrection->visual_info.class =
                StrToDefine(VisualClassTbl, value)) {
            case  StaticColor:
            break;
            case  PseudoColor:
            break;
            case  TrueColor:
            break;
            case  DirectColor:
            break;
            case  StaticGray:
            /* invalid, fall through */
            case  GrayScale:
            /* invalid, fall through */
            default:
            fprintf(stderr,
                  "Line %d: invalid Visual Class -- %s\n",
                  linenum, value);
            return (0);
          }
          pCorrection->visual_info_mask |= VisualClassMask;
          break;
        case  KEY_RED_MASK:
          if (sscanf(value, "%li", &tmp) != 1) {
            fprintf(stderr,
                  "Line %d: invalid red_mask specified -- %s\n",
                  linenum, value);
            return (0);
          } else
            pCorrection->visual_info.red_mask = tmp;
          pCorrection->visual_info_mask |= VisualRedMaskMask;
          break;
        case  KEY_GREEN_MASK:
          if (sscanf(value, "%li", &tmp) != 1) {
            fprintf(stderr,
                  "Line %d: invalid green_mask specified -- %s\n",
                  linenum, value);
            return (0);
          } else
            pCorrection->visual_info.green_mask = tmp;
          pCorrection->visual_info_mask |= VisualGreenMaskMask;
          break;
        case  KEY_BLUE_MASK:
          if (sscanf(value, "%li", &tmp) != 1) {
            fprintf(stderr,
                  "Line %d: invalid blue_mask specified -- %s\n",
                  linenum, value);
            return (0);
          } else
            pCorrection->visual_info.blue_mask = tmp;
          pCorrection->visual_info_mask |= VisualBlueMaskMask;
          break;
        case  KEY_COLORMAP_SIZE:
          if (sscanf(value, "%i", &pCorrection->visual_info.colormap_size) != 1) {
            fprintf(stderr,
                  "Line %d: invalid colormap_size specified -- %s\n",
                  linenum, value);
            return (0);
          } 
          pCorrection->visual_info_mask |= VisualColormapSizeMask;
          break;
        case  KEY_BITS_PER_RGB:
          if (sscanf(value, "%i", &pCorrection->visual_info.bits_per_rgb) != 1) {
            fprintf(stderr,
                  "Line %d: invalid bits_per_rgb specified -- %s\n",
                  linenum, value);
            return (0);
          } 
          pCorrection->visual_info_mask |= VisualBitsPerRGBMask;
          break;
        default:
          fprintf(stderr,
                "Line %d: invalid keyword %s\n", linenum, key);
          return (0);
      }
      key = strtok((char*)NULL, delims);
    } while (key != (char *)NULL);

    vinfo = XGetVisualInfo(pDpy,
          pCorrection->visual_info_mask,
          &pCorrection->visual_info,
          &n_matches);

    if (!n_matches) {
      fprintf(stderr, "Line %d: Cannot find visual matching ...\n", linenum);
      PrintVisualOptions(pCorrection);
      fprintf(stderr, "\n");
      return(0);
    }
    if (n_matches > 1) {
      fprintf(stderr, "Line %d: Found more than one visual matching ...\n", linenum);
      PrintVisualOptions(pCorrection);
      fprintf(stderr, "    Using VisualId 0x%lx\n", (unsigned long)vinfo->visualid);
    }
    memcpy((char*)&pCorrection->visual_info, (char*)vinfo,
          sizeof(XVisualInfo));
    return (1);
} 


/************************************************************************
 *                                                    *
 *                 PUBLIC ROUTINES                    *
 *                                                    *
 ************************************************************************/

/*
 *    NAME
 *          LoadSCCData - Read and store the screen data
 *
 *    SYNOPSIS
 */
int
LoadSCCData(Display *pDpy, int screenNumber, char *filename, int targetFormat)

/*
 *    DESCRIPTION
 *          Using the X Device Color Characterization Convention (XDCCC)
 *          read the screen data and store it on the root window of the
 *          screen.
 *
 *    RETURNS
 *          Returns 0 if failed; otherwise 1.
 *
 */
{    
    FILE *stream;
    char *pStr;
    char buf[BUFSIZ];
    char *keyword, *token1, *token2, *token3;
    int  state = 0;
    int VisualFlag = -2;
    Window root;
    XDCCC_Matrix matrix;
    XDCCC_Correction* CorrectionTail = (XDCCC_Correction*)NULL;
    XDCCC_Correction* CorrectionHead = (XDCCC_Correction*)NULL;
    XDCCC_Correction* pCurrent;

    if (screenNumber < 0) {
      fprintf(stderr,"Invalid Screen Number %d\n", screenNumber);
      return(0);
    }
    root = RootWindow(pDpy, screenNumber);

    if (!root) {
      /* if no root window is available then return an error */
      fprintf(stderr,"Could not open root window supplied.\n ");
      return (0);
    }
    /*
     * Open the file, determine its size, then read it into memory.
     */
    if (filename == NULL) {
      stream = stdin;
      filename = "stdin";
    } else if ((stream = fopen(filename, "r")) == NULL) {
      fprintf(stderr,"Could not open file %s.\n", filename);
      return (0);
    }

    /*
     * Advance to starting keyword 
     * Anything before this keyword is just treated as comments.
     */

    while((pStr = nextline(buf, BUFSIZ, stream)) != NULL) {
      keyword = strtok(buf, DATA_DELIMS);
      if (keyword != (char *)NULL &&
            (strcmp(keyword, SC_BEGIN_KEYWORD) == 0)) {
          break;
      }  /* else ignore the line */
    }

    if (pStr == NULL) {
      fprintf(stderr,"File %s is missing %s\n", filename, SC_BEGIN_KEYWORD);
      closeS (stream, CorrectionHead);
      return (0);
    }

    token1 = strtok((char*)NULL, DATA_DELIMS);
    if ((strcmp(token1, TXT_FORMAT_VERSION) != 0) &&
          (strcmp(token1, "0.3") != 0)) {
      fprintf(stderr,
    "Screen data format version mismatch in file %s-- expected %s, found %s\n",
            filename, TXT_FORMAT_VERSION, token1);
      closeS (stream, CorrectionHead);
      return (0);
    }

    while ((pStr = nextline(buf, BUFSIZ, stream)) != NULL) {
      token1 = token2 = token3 = (char*)NULL;
      keyword = strtok(buf, DATA_DELIMS);
      if (keyword != (char*)NULL) {
          switch (SCKeyOf(keyword)) {
            case COMMENT :
            case NAME :
            case PART_NUMBER :
            case MODEL :
            case SERIAL_NUMBER :
            case REVISION :
            /* Do nothing */
            break;
            case SCREEN_CLASS :
            token1 = strtok((char*)NULL, DATA_DELIMS);
            token2 = strtok((char*)NULL, DATA_DELIMS);
            if ((token1 == (char*)NULL)
                  || ((VisualFlag = SCScrnClassOf(token1)) == -1)) {
                closeS (stream, CorrectionHead);
                return (0);
            }
            /*include code to handle screen number input*/
            if (token2 != (char*)NULL) {
                screenNumber = atoi(token2);

                if (screenNumber < 0) {
                  fprintf(stderr,"Invalid Screen Number %d\n", 
                        screenNumber);
                }
                else {
                  root = RootWindow(pDpy, screenNumber);
                  if (!root) {
      /* if no root window is available then return an error */
                      fprintf(stderr,
                            "Could not open root window supplied.\n ");
                      return (0);
                  }
                }
            }
            break;
            case COLORIMETRIC_BEGIN :
            if (VisualFlag == -2) {
                closeS (stream, CorrectionHead);
                return (0);
            }
            if (!ProcessColorimetric(stream, 
                               &matrix, VisualFlag)) {
                closeS (stream, CorrectionHead);
                return (0);
            }
            state |= 0x02;
            break;
            case IPROFILE_BEGIN :
            if (VisualFlag == -2) {
                closeS (stream, CorrectionHead);
                return (0);
            }
            token1 = strtok((char*)NULL, DATA_DELIMS);
            token2 = strtok((char*)NULL, DATA_DELIMS);
            if ((token1 == (char*)NULL) || (token2 == (char*)NULL)) {
                fprintf(stderr,
                  "Line %d: Intensity profile missing TableType and/or nTables.",
                  linenum);
                closeS (stream, CorrectionHead);
                return (0);
            }

            if ((pCurrent = (XDCCC_Correction *)
                  calloc(1, sizeof(XDCCC_Correction))) ==NULL) {
                fprintf(stderr,
                  "Line %d: Could not allocate memory for intensity profile.",
                  linenum);
                closeS (stream, CorrectionHead);
                return (0);
            }

            if (sscanf(token1, "%d", &pCurrent->tableType) != 1 ||
                (pCurrent->tableType < 0 || pCurrent->tableType > 1)) {
                fprintf(stderr,
                      "Line %d: invalid table type specified -- %s\n",
                      linenum, buf);
                closeS (stream, CorrectionHead);
                return (0);
            } 

            if ((VisualFlag == VIDEO_RGB) && (token2 == (char *)NULL)) {
                fprintf(stderr,
                  "Line %d: invalid number of tables specified -- %s\n",
                      linenum, buf);
                closeS (stream, CorrectionHead);
                return (0);
            }

            if (VisualFlag == VIDEO_RGB) {
                if (sscanf(token2, "%d", &pCurrent->nTables) != 1 ||
                      (pCurrent->nTables != 0 && pCurrent->nTables != 1
                      && pCurrent->nTables != 3)) {
                  fprintf(stderr,
                        "Line %d: invalid number of tables (must be 0, 1, or 3)\n",
                        linenum);
                  closeS (stream, CorrectionHead);
                  return (0);
                }
            } else {
                pCurrent->nTables = 0;
            }

            token3 = strtok((char*)NULL, "\n");
            if (token3 != (char*)NULL) {
                if (!ParseVisualOptions(pDpy, pCurrent, token3)) {
                  goto ByPassThisIProfile;
                } 
            }

            switch (pCurrent->nTables) {
              case 3 :
                if (!(pCurrent->pRedTbl = (IntensityTbl *)
                  calloc (1, sizeof (IntensityTbl)))) {
                  fprintf(stderr,
                         "Line %d: Could not allocate Red Intensity Table\n",
                         linenum);
                  closeS (stream, CorrectionHead);
                  return (0);
                }
                if (!(pCurrent->pGreenTbl = (IntensityTbl *)
                  calloc (1, sizeof (IntensityTbl)))) {
                  fprintf(stderr,
                       "Line %d: Could not allocate Green Intensity Table\n",
                       linenum);
                  closeS (stream, CorrectionHead);
                  return (0);
                }
                if (!(pCurrent->pBlueTbl = (IntensityTbl *)
                  calloc (1, sizeof (IntensityTbl)))) {
                  fprintf(stderr,
                        "Line %d: Could not allocate Blue Intensity Table",
                        linenum);
                  closeS (stream, CorrectionHead);
                  return (0);
                }
                if (!ProcessIProfile(stream, pCurrent)) {
                  goto ByPassThisIProfile;
                }
                break;
              case 1 :
                if (!(pCurrent->pRedTbl = (IntensityTbl *)
                    calloc (1, sizeof (IntensityTbl)))) {
                  fprintf(stderr,
                        "Line %d: Could not allocate Red Intensity Table",
                        linenum);
                  closeS (stream, CorrectionHead);
                  return (0);
                }
                pCurrent->pGreenTbl = pCurrent->pRedTbl;
                pCurrent->pBlueTbl = pCurrent->pRedTbl;
                if (!ProcessIProfile(stream, pCurrent)) {
                  goto ByPassThisIProfile;
                }
                break;
              default :
                /* do nothing */
                break;
            }

            if (CorrectionHead == NULL) {
                CorrectionHead = CorrectionTail = pCurrent;
            } else {
                CorrectionTail->next = pCurrent;
                CorrectionTail = pCurrent;
            }
            state |= 0x04;
            break;
ByPassThisIProfile:
            /* read till INTENSITY_PROFILE_END */
            while ((pStr = nextline(buf, BUFSIZ, stream)) != NULL) {
                keyword = strtok(buf, DATA_DELIMS);
                if (keyword != (char*)NULL) {
                  switch (SCKeyOf(keyword)) {
                    case ITBL_BEGIN:
                    case ITBL_END:
                    case COMMENT:
                    case DATA:
                      break;
                    case IPROFILE_END:
                      goto IProfileProcessed;
                    default:
                      closeS (stream, CorrectionHead);
                      return (0);
                  }
                }
            }
            free(pCurrent);
IProfileProcessed:
            state |= 0x04;
            break;
            case SC_END :
            if (!(state & 0x02)) {
                fprintf(stderr,
                      "File %s is missing Colorimetric data.\n", 
                      filename);
                closeS (stream, CorrectionHead);
                return (0);
            }
            if (!(state & 0x04)) {
                fprintf(stderr,
                      "File %s is missing Intensity Profile Data.\n",
                      filename);
            }
            if (VisualFlag == VIDEO_RGB) {
                LoadMatrix(pDpy, root, &matrix);
                if (!LoadCorrections(pDpy, root, CorrectionHead,
                      targetFormat)) {
                  closeS (stream, CorrectionHead);
                  return (0);
                }
#ifdef GRAY
            } else if (VisualFlag == VIDEO_GRAY) {
                if (!LoadDataGray(pDpy, root,
                              pCurrent->tableType, pScreenData, targetFormat)) {
                  closeS (stream, CorrectionHead);
                  return (0);
                }
#endif /* GRAY */
            } else {
                fprintf(stderr,"File %s Visual missing.", filename);
            }
            closeS (stream, CorrectionHead);
            return (1);
/* NOTREACHED */    break;
            default :
            fprintf(stderr,"Line %d: extraneous keyword %s\n", 
                  linenum, keyword);
            closeS (stream, CorrectionHead);
            return (0);

          }
      }   /* else it was just a blank line */
    }
    closeS (stream, CorrectionHead);
    return (1);
}

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