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[wxWidgets.git] / src / tiff / tif_dirinfo.c

diff --git a/src/tiff/tif_dirinfo.c b/src/tiff/tif_dirinfo.c
index 1c49c9a32e299d0b8560a0da9802bcf75147a128..c8a02e1f69bda8b5e1f722a3e5142c2293ce3494 100644 (file)
--- a/src/tiff/tif_dirinfo.c
+++ b/src/tiff/tif_dirinfo.c
@@ -31,14 +31,25 @@
  */
 #include "tiffiop.h"
 #include <stdlib.h>
  */
 #include "tiffiop.h"
 #include <stdlib.h>

+#include <assert.h>
+#include <stdio.h>

 
 /*
  * NB: NB: THIS ARRAY IS ASSUMED TO BE SORTED BY TAG.
  *     If a tag can have both LONG and SHORT types
  *     then the LONG must be placed before the SHORT for
  *     writing to work properly.
 
 /*
  * NB: NB: THIS ARRAY IS ASSUMED TO BE SORTED BY TAG.
  *     If a tag can have both LONG and SHORT types
  *     then the LONG must be placed before the SHORT for
  *     writing to work properly.

+ *
+ * NOTE: The second field (field_readcount) and third field (field_writecount)
+ *       sometimes use the values TIFF_VARIABLE (-1), TIFF_VARIABLE2 (-3)
+ *       and TIFFTAG_SPP (-2). The macros should be used but would throw off 
+ *       the formatting of the code, so please interprete the -1, -2 and -3 
+ *       values accordingly.

  */
  */

-static const TIFFFieldInfo tiffFieldInfo[] = {
+#ifndef VMS
+static 
+#endif
+const TIFFFieldInfo tiffFieldInfo[] = {

     { TIFFTAG_SUBFILETYPE,      1, 1, TIFF_LONG,       FIELD_SUBFILETYPE,
       TRUE,    FALSE,  "SubfileType" },
 /* XXX SHORT for compatibility w/ old versions of the library */
     { TIFFTAG_SUBFILETYPE,      1, 1, TIFF_LONG,       FIELD_SUBFILETYPE,
       TRUE,    FALSE,  "SubfileType" },
 /* XXX SHORT for compatibility w/ old versions of the library */


@@ -54,10 +65,19 @@ static const TIFFFieldInfo tiffFieldInfo[] = {
       TRUE,    FALSE,  "ImageLength" },
     { TIFFTAG_IMAGELENGTH,      1, 1, TIFF_SHORT,      FIELD_IMAGEDIMENSIONS,
       TRUE,    FALSE,  "ImageLength" },
       TRUE,    FALSE,  "ImageLength" },
     { TIFFTAG_IMAGELENGTH,      1, 1, TIFF_SHORT,      FIELD_IMAGEDIMENSIONS,
       TRUE,    FALSE,  "ImageLength" },

+/* XXX LONG for compatibility with some broken TIFF writers */
+    { TIFFTAG_BITSPERSAMPLE,   -1,-1, TIFF_LONG,       FIELD_BITSPERSAMPLE,
+      FALSE,   FALSE,  "BitsPerSample" },

     { TIFFTAG_BITSPERSAMPLE,   -1,-1, TIFF_SHORT,      FIELD_BITSPERSAMPLE,
       FALSE,   FALSE,  "BitsPerSample" },
     { TIFFTAG_BITSPERSAMPLE,   -1,-1, TIFF_SHORT,      FIELD_BITSPERSAMPLE,
       FALSE,   FALSE,  "BitsPerSample" },

+/* XXX LONG for compatibility with some broken TIFF writers */
+    { TIFFTAG_COMPRESSION,     -1, 1, TIFF_LONG,       FIELD_COMPRESSION,
+      FALSE,   FALSE,  "Compression" },

     { TIFFTAG_COMPRESSION,     -1, 1, TIFF_SHORT,      FIELD_COMPRESSION,
       FALSE,   FALSE,  "Compression" },
     { TIFFTAG_COMPRESSION,     -1, 1, TIFF_SHORT,      FIELD_COMPRESSION,
       FALSE,   FALSE,  "Compression" },

+/* XXX LONG for compatibility with some broken TIFF writers */
+    { TIFFTAG_PHOTOMETRIC,      1, 1, TIFF_LONG,       FIELD_PHOTOMETRIC,
+      FALSE,   FALSE,  "PhotometricInterpretation" },

     { TIFFTAG_PHOTOMETRIC,      1, 1, TIFF_SHORT,      FIELD_PHOTOMETRIC,
       FALSE,   FALSE,  "PhotometricInterpretation" },
     { TIFFTAG_THRESHHOLDING,    1, 1, TIFF_SHORT,      FIELD_THRESHHOLDING,
     { TIFFTAG_PHOTOMETRIC,      1, 1, TIFF_SHORT,      FIELD_PHOTOMETRIC,
       FALSE,   FALSE,  "PhotometricInterpretation" },
     { TIFFTAG_THRESHHOLDING,    1, 1, TIFF_SHORT,      FIELD_THRESHHOLDING,


@@ -122,11 +142,9 @@ static const TIFFFieldInfo tiffFieldInfo[] = {
       TRUE,    FALSE,  "PageNumber" },
     { TIFFTAG_COLORRESPONSEUNIT, 1, 1, TIFF_SHORT,     FIELD_IGNORE,
       TRUE,    FALSE,  "ColorResponseUnit" },
       TRUE,    FALSE,  "PageNumber" },
     { TIFFTAG_COLORRESPONSEUNIT, 1, 1, TIFF_SHORT,     FIELD_IGNORE,
       TRUE,    FALSE,  "ColorResponseUnit" },

-#ifdef COLORIMETRY_SUPPORT

     { TIFFTAG_TRANSFERFUNCTION,        -1,-1, TIFF_SHORT,      FIELD_TRANSFERFUNCTION,
       TRUE,    FALSE,  "TransferFunction" },
     { TIFFTAG_TRANSFERFUNCTION,        -1,-1, TIFF_SHORT,      FIELD_TRANSFERFUNCTION,
       TRUE,    FALSE,  "TransferFunction" },

-#endif
-    { TIFFTAG_SOFTWARE,                -1,-1, TIFF_ASCII,      FIELD_SOFTWARE,
+    { TIFFTAG_SOFTWARE,                -1,-1, TIFF_ASCII,      FIELD_CUSTOM,

       TRUE,    FALSE,  "Software" },
     { TIFFTAG_DATETIME,                20,20, TIFF_ASCII,      FIELD_DATETIME,
       TRUE,    FALSE,  "DateTime" },
       TRUE,    FALSE,  "Software" },
     { TIFFTAG_DATETIME,                20,20, TIFF_ASCII,      FIELD_DATETIME,
       TRUE,    FALSE,  "DateTime" },


@@ -134,12 +152,10 @@ static const TIFFFieldInfo tiffFieldInfo[] = {
       TRUE,    FALSE,  "Artist" },
     { TIFFTAG_HOSTCOMPUTER,    -1,-1, TIFF_ASCII,      FIELD_HOSTCOMPUTER,
       TRUE,    FALSE,  "HostComputer" },
       TRUE,    FALSE,  "Artist" },
     { TIFFTAG_HOSTCOMPUTER,    -1,-1, TIFF_ASCII,      FIELD_HOSTCOMPUTER,
       TRUE,    FALSE,  "HostComputer" },

-#ifdef COLORIMETRY_SUPPORT

     { TIFFTAG_WHITEPOINT,       2, 2, TIFF_RATIONAL,FIELD_WHITEPOINT,
       TRUE,    FALSE,  "WhitePoint" },
     { TIFFTAG_PRIMARYCHROMATICITIES,6,6,TIFF_RATIONAL,FIELD_PRIMARYCHROMAS,
       TRUE,    FALSE,  "PrimaryChromaticities" },
     { TIFFTAG_WHITEPOINT,       2, 2, TIFF_RATIONAL,FIELD_WHITEPOINT,
       TRUE,    FALSE,  "WhitePoint" },
     { TIFFTAG_PRIMARYCHROMATICITIES,6,6,TIFF_RATIONAL,FIELD_PRIMARYCHROMAS,
       TRUE,    FALSE,  "PrimaryChromaticities" },

-#endif

     { TIFFTAG_COLORMAP,                -1,-1, TIFF_SHORT,      FIELD_COLORMAP,
       TRUE,    FALSE,  "ColorMap" },
     { TIFFTAG_HALFTONEHINTS,    2, 2, TIFF_SHORT,      FIELD_HALFTONEHINTS,
     { TIFFTAG_COLORMAP,                -1,-1, TIFF_SHORT,      FIELD_COLORMAP,
       TRUE,    FALSE,  "ColorMap" },
     { TIFFTAG_HALFTONEHINTS,    2, 2, TIFF_SHORT,      FIELD_HALFTONEHINTS,


@@ -158,11 +174,8 @@ static const TIFFFieldInfo tiffFieldInfo[] = {
       FALSE,   FALSE,  "TileByteCounts" },
     { TIFFTAG_TILEBYTECOUNTS,  -1, 1, TIFF_SHORT,      FIELD_STRIPBYTECOUNTS,
       FALSE,   FALSE,  "TileByteCounts" },
       FALSE,   FALSE,  "TileByteCounts" },
     { TIFFTAG_TILEBYTECOUNTS,  -1, 1, TIFF_SHORT,      FIELD_STRIPBYTECOUNTS,
       FALSE,   FALSE,  "TileByteCounts" },

-#ifdef TIFFTAG_SUBIFD

     { TIFFTAG_SUBIFD,          -1,-1, TIFF_LONG,       FIELD_SUBIFD,
       TRUE,    TRUE,   "SubIFD" },
     { TIFFTAG_SUBIFD,          -1,-1, TIFF_LONG,       FIELD_SUBIFD,
       TRUE,    TRUE,   "SubIFD" },

-#endif
-#ifdef CMYK_SUPPORT            /* 6.0 CMYK tags */

     { TIFFTAG_INKSET,           1, 1, TIFF_SHORT,      FIELD_INKSET,
       FALSE,   FALSE,  "InkSet" },
     { TIFFTAG_INKNAMES,                -1,-1, TIFF_ASCII,      FIELD_INKNAMES,
     { TIFFTAG_INKSET,           1, 1, TIFF_SHORT,      FIELD_INKSET,
       FALSE,   FALSE,  "InkSet" },
     { TIFFTAG_INKNAMES,                -1,-1, TIFF_ASCII,      FIELD_INKNAMES,


@@ -175,7 +188,6 @@ static const TIFFFieldInfo tiffFieldInfo[] = {
       FALSE,   FALSE,  "DotRange" },
     { TIFFTAG_TARGETPRINTER,   -1,-1, TIFF_ASCII,      FIELD_TARGETPRINTER,
       TRUE,    FALSE,  "TargetPrinter" },
       FALSE,   FALSE,  "DotRange" },
     { TIFFTAG_TARGETPRINTER,   -1,-1, TIFF_ASCII,      FIELD_TARGETPRINTER,
       TRUE,    FALSE,  "TargetPrinter" },

-#endif

     { TIFFTAG_EXTRASAMPLES,    -1,-1, TIFF_SHORT,      FIELD_EXTRASAMPLES,
       FALSE,   FALSE,  "ExtraSamples" },
 /* XXX for bogus Adobe Photoshop v2.5 files */
     { TIFFTAG_EXTRASAMPLES,    -1,-1, TIFF_SHORT,      FIELD_EXTRASAMPLES,
       FALSE,   FALSE,  "ExtraSamples" },
 /* XXX for bogus Adobe Photoshop v2.5 files */


@@ -187,21 +199,19 @@ static const TIFFFieldInfo tiffFieldInfo[] = {
       TRUE,    FALSE,  "SMinSampleValue" },
     { TIFFTAG_SMAXSAMPLEVALUE, -2,-1, TIFF_ANY,        FIELD_SMAXSAMPLEVALUE,
       TRUE,    FALSE,  "SMaxSampleValue" },
       TRUE,    FALSE,  "SMinSampleValue" },
     { TIFFTAG_SMAXSAMPLEVALUE, -2,-1, TIFF_ANY,        FIELD_SMAXSAMPLEVALUE,
       TRUE,    FALSE,  "SMaxSampleValue" },

-#ifdef YCBCR_SUPPORT           /* 6.0 YCbCr tags */

     { TIFFTAG_YCBCRCOEFFICIENTS, 3, 3, TIFF_RATIONAL,  FIELD_YCBCRCOEFFICIENTS,
       FALSE,   FALSE,  "YCbCrCoefficients" },
     { TIFFTAG_YCBCRSUBSAMPLING,         2, 2, TIFF_SHORT,      FIELD_YCBCRSUBSAMPLING,
       FALSE,   FALSE,  "YCbCrSubsampling" },
     { TIFFTAG_YCBCRPOSITIONING,         1, 1, TIFF_SHORT,      FIELD_YCBCRPOSITIONING,
       FALSE,   FALSE,  "YCbCrPositioning" },
     { TIFFTAG_YCBCRCOEFFICIENTS, 3, 3, TIFF_RATIONAL,  FIELD_YCBCRCOEFFICIENTS,
       FALSE,   FALSE,  "YCbCrCoefficients" },
     { TIFFTAG_YCBCRSUBSAMPLING,         2, 2, TIFF_SHORT,      FIELD_YCBCRSUBSAMPLING,
       FALSE,   FALSE,  "YCbCrSubsampling" },
     { TIFFTAG_YCBCRPOSITIONING,         1, 1, TIFF_SHORT,      FIELD_YCBCRPOSITIONING,
       FALSE,   FALSE,  "YCbCrPositioning" },

-#endif
-#ifdef COLORIMETRY_SUPPORT

     { TIFFTAG_REFERENCEBLACKWHITE,6,6,TIFF_RATIONAL,   FIELD_REFBLACKWHITE,
       TRUE,    FALSE,  "ReferenceBlackWhite" },
 /* XXX temporarily accept LONG for backwards compatibility */
     { TIFFTAG_REFERENCEBLACKWHITE,6,6,TIFF_LONG,       FIELD_REFBLACKWHITE,
       TRUE,    FALSE,  "ReferenceBlackWhite" },
     { TIFFTAG_REFERENCEBLACKWHITE,6,6,TIFF_RATIONAL,   FIELD_REFBLACKWHITE,
       TRUE,    FALSE,  "ReferenceBlackWhite" },
 /* XXX temporarily accept LONG for backwards compatibility */
     { TIFFTAG_REFERENCEBLACKWHITE,6,6,TIFF_LONG,       FIELD_REFBLACKWHITE,
       TRUE,    FALSE,  "ReferenceBlackWhite" },

-#endif
+    { TIFFTAG_XMLPACKET,       -1,-3, TIFF_UNDEFINED,  FIELD_XMLPACKET,
+      FALSE,   TRUE,   "XMLPacket" },

 /* begin SGI tags */
     { TIFFTAG_MATTEING,                 1, 1, TIFF_SHORT,      FIELD_EXTRASAMPLES,
       FALSE,   FALSE,  "Matteing" },
 /* begin SGI tags */
     { TIFFTAG_MATTEING,                 1, 1, TIFF_SHORT,      FIELD_EXTRASAMPLES,
       FALSE,   FALSE,  "Matteing" },


@@ -216,6 +226,24 @@ static const TIFFFieldInfo tiffFieldInfo[] = {
     { TIFFTAG_TILEDEPTH,        1, 1, TIFF_SHORT,      FIELD_TILEDEPTH,
       FALSE,   FALSE,  "TileDepth" },
 /* end SGI tags */
     { TIFFTAG_TILEDEPTH,        1, 1, TIFF_SHORT,      FIELD_TILEDEPTH,
       FALSE,   FALSE,  "TileDepth" },
 /* end SGI tags */

+/* begin Pixar tags */
+    { TIFFTAG_PIXAR_IMAGEFULLWIDTH,  1, 1, TIFF_LONG,  FIELD_IMAGEFULLWIDTH,
+      TRUE,    FALSE,  "ImageFullWidth" },
+    { TIFFTAG_PIXAR_IMAGEFULLLENGTH, 1, 1, TIFF_LONG,  FIELD_IMAGEFULLLENGTH,
+      TRUE,    FALSE,  "ImageFullLength" },
+    { TIFFTAG_PIXAR_TEXTUREFORMAT,  -1,-1, TIFF_ASCII, FIELD_TEXTUREFORMAT,
+      TRUE,    FALSE,  "TextureFormat" },
+    { TIFFTAG_PIXAR_WRAPMODES,     -1,-1, TIFF_ASCII,  FIELD_WRAPMODES,
+      TRUE,    FALSE,  "TextureWrapModes" },
+    { TIFFTAG_PIXAR_FOVCOT,         1, 1, TIFF_FLOAT,  FIELD_FOVCOT,
+      TRUE,    FALSE,  "FieldOfViewCotan" },
+    { TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN,      16,16,  TIFF_FLOAT,
+      FIELD_MATRIX_WORLDTOSCREEN,      TRUE,   FALSE,  "MatrixWorldToScreen" },
+    { TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA,      16,16,  TIFF_FLOAT,
+       FIELD_MATRIX_WORLDTOCAMERA,     TRUE,   FALSE,  "MatrixWorldToCamera" },
+    { TIFFTAG_COPYRIGHT,       -1,-1, TIFF_ASCII,      FIELD_COPYRIGHT,
+      TRUE,    FALSE,  "Copyright" },
+/* end Pixar tags */

 #ifdef IPTC_SUPPORT
 #ifdef PHOTOSHOP_SUPPORT
     { TIFFTAG_RICHTIFFIPTC, -1,-1, TIFF_LONG,   FIELD_RICHTIFFIPTC, 
 #ifdef IPTC_SUPPORT
 #ifdef PHOTOSHOP_SUPPORT
     { TIFFTAG_RICHTIFFIPTC, -1,-1, TIFF_LONG,   FIELD_RICHTIFFIPTC, 


@@ -225,16 +253,10 @@ static const TIFFFieldInfo tiffFieldInfo[] = {
       FALSE,    TRUE,   "RichTIFFIPTC" },
 #endif
 #endif
       FALSE,    TRUE,   "RichTIFFIPTC" },
 #endif
 #endif

-#ifdef PHOTOSHOP_SUPPORT
-    { TIFFTAG_PHOTOSHOP,    -1,-3, TIFF_UNDEFINED, FIELD_PHOTOSHOP, 
+    { TIFFTAG_PHOTOSHOP,    -1,-3, TIFF_BYTE,   FIELD_PHOTOSHOP, 

       FALSE,    TRUE,   "Photoshop" },
       FALSE,    TRUE,   "Photoshop" },

-    { TIFFTAG_PHOTOSHOP,    -1,-1, TIFF_BYTE,   FIELD_PHOTOSHOP, 
-      FALSE,    TRUE,   "Photoshop" },
-#endif
-#ifdef ICC_SUPPORT

     { TIFFTAG_ICCPROFILE,      -1,-3, TIFF_UNDEFINED,  FIELD_ICCPROFILE,
       FALSE,   TRUE,   "ICC Profile" },
     { TIFFTAG_ICCPROFILE,      -1,-3, TIFF_UNDEFINED,  FIELD_ICCPROFILE,
       FALSE,   TRUE,   "ICC Profile" },

-#endif

     { TIFFTAG_STONITS,          1, 1, TIFF_DOUBLE,     FIELD_STONITS,
       FALSE,   FALSE,  "StoNits" },
 };
     { TIFFTAG_STONITS,          1, 1, TIFF_DOUBLE,     FIELD_STONITS,
       FALSE,   FALSE,  "StoNits" },
 };


@@ -244,6 +266,19 @@ void
 _TIFFSetupFieldInfo(TIFF* tif)
 {
        if (tif->tif_fieldinfo) {
 _TIFFSetupFieldInfo(TIFF* tif)
 {
        if (tif->tif_fieldinfo) {

+               int  i;
+
+               for (i = 0; i < tif->tif_nfields; i++) 
+               {
+                       TIFFFieldInfo *fld = tif->tif_fieldinfo[i];
+                       if (fld->field_bit == FIELD_CUSTOM && 
+                               strncmp("Tag ", fld->field_name, 4) == 0) 
+                               {
+                               _TIFFfree(fld->field_name);
+                               _TIFFfree(fld);
+                               }
+               }   
+      

                _TIFFfree(tif->tif_fieldinfo);
                tif->tif_nfields = 0;
        }
                _TIFFfree(tif->tif_fieldinfo);
                tif->tif_nfields = 0;
        }


@@ -259,7 +294,7 @@ tagCompare(const void* a, const void* b)
        if (ta->field_tag != tb->field_tag)
                return (ta->field_tag < tb->field_tag ? -1 : 1);
        else
        if (ta->field_tag != tb->field_tag)
                return (ta->field_tag < tb->field_tag ? -1 : 1);
        else

-               return (tb->field_type < ta->field_type ? -1 : 1);
+               return ((int)tb->field_type - (int)ta->field_type);

 }
 
 void
 }
 
 void


@@ -276,17 +311,14 @@ _TIFFMergeFieldInfo(TIFF* tif, const TIFFFieldInfo info[], int n)
                tif->tif_fieldinfo = (TIFFFieldInfo**)
                    _TIFFmalloc(n * sizeof (TIFFFieldInfo*));
        }
                tif->tif_fieldinfo = (TIFFFieldInfo**)
                    _TIFFmalloc(n * sizeof (TIFFFieldInfo*));
        }

+       assert(tif->tif_fieldinfo != NULL);

        tp = &tif->tif_fieldinfo[tif->tif_nfields];
        for (i = 0; i < n; i++)
                tp[i] = (TIFFFieldInfo*) &info[i];      /* XXX */
        tp = &tif->tif_fieldinfo[tif->tif_nfields];
        for (i = 0; i < n; i++)
                tp[i] = (TIFFFieldInfo*) &info[i];      /* XXX */

-       /*
-        * NB: the core tags are presumed sorted correctly.
-        */
-       if (tif->tif_nfields > 0)
-               qsort(tif->tif_fieldinfo, (size_t) (tif->tif_nfields += n),
-                   sizeof (TIFFFieldInfo*), tagCompare);
-       else
-               tif->tif_nfields += n;
+
+        /* Sort the field info by tag number */
+        qsort(tif->tif_fieldinfo, (size_t) (tif->tif_nfields += n),
+              sizeof (TIFFFieldInfo*), tagCompare);

 }
 
 void
 }
 
 void


@@ -310,21 +342,36 @@ _TIFFPrintFieldInfo(TIFF* tif, FILE* fd)
        }
 }
 
        }
 }
 

-const int tiffDataWidth[] = {
-    1, /* nothing */
-    1, /* TIFF_BYTE */
-    1, /* TIFF_ASCII */
-    2, /* TIFF_SHORT */
-    4, /* TIFF_LONG */
-    8, /* TIFF_RATIONAL */
-    1, /* TIFF_SBYTE */
-    1, /* TIFF_UNDEFINED */
-    2, /* TIFF_SSHORT */
-    4, /* TIFF_SLONG */
-    8, /* TIFF_SRATIONAL */
-    4, /* TIFF_FLOAT */
-    8, /* TIFF_DOUBLE */
-};
+/*
+ * Return size of TIFFDataType in bytes
+ */
+int
+TIFFDataWidth(TIFFDataType type)
+{
+       switch(type)
+       {
+       case 0:  /* nothing */
+       case 1:  /* TIFF_BYTE */
+       case 2:  /* TIFF_ASCII */
+       case 6:  /* TIFF_SBYTE */
+       case 7:  /* TIFF_UNDEFINED */
+               return 1;
+       case 3:  /* TIFF_SHORT */
+       case 8:  /* TIFF_SSHORT */
+               return 2;
+       case 4:  /* TIFF_LONG */
+       case 9:  /* TIFF_SLONG */
+       case 11: /* TIFF_FLOAT */
+        case 13: /* TIFF_IFD */
+               return 4;
+       case 5:  /* TIFF_RATIONAL */
+       case 10: /* TIFF_SRATIONAL */
+       case 12: /* TIFF_DOUBLE */
+               return 8;
+       default:
+               return 0; /* will return 0 for unknown types */
+       }
+}

 
 /*
  * Return nearest TIFFDataType to the sample type of an image.
 
 /*
  * Return nearest TIFFDataType to the sample type of an image.


@@ -332,7 +379,7 @@ const int tiffDataWidth[] = {
 TIFFDataType
 _TIFFSampleToTagType(TIFF* tif)
 {
 TIFFDataType
 _TIFFSampleToTagType(TIFF* tif)
 {

-       int bps = (int) TIFFhowmany(tif->tif_dir.td_bitspersample, 8);
+       uint32 bps = TIFFhowmany8(tif->tif_dir.td_bitspersample);

 
        switch (tif->tif_dir.td_sampleformat) {
        case SAMPLEFORMAT_IEEEFP:
 
        switch (tif->tif_dir.td_sampleformat) {
        case SAMPLEFORMAT_IEEEFP:


@@ -360,7 +407,16 @@ _TIFFFindFieldInfo(TIFF* tif, ttag_t tag, TIFFDataType dt)
            (dt == TIFF_ANY || dt == last->field_type))
                return (last);
        /* NB: if table gets big, use sorted search (e.g. binary search) */
            (dt == TIFF_ANY || dt == last->field_type))
                return (last);
        /* NB: if table gets big, use sorted search (e.g. binary search) */

-       for (i = 0, n = tif->tif_nfields; i < n; i++) {
+       if(dt != TIFF_ANY) {
+            TIFFFieldInfo key = {0, 0, 0, 0, 0, 0, 0, 0};
+            key.field_tag = tag;
+            key.field_type = dt;
+            return((const TIFFFieldInfo *) bsearch(&key, 
+                                                  tif->tif_fieldinfo, 
+                                                  tif->tif_nfields,
+                                                  sizeof(TIFFFieldInfo), 
+                                                  tagCompare));
+        } else for (i = 0, n = tif->tif_nfields; i < n; i++) {

                const TIFFFieldInfo* fip = tif->tif_fieldinfo[i];
                if (fip->field_tag == tag &&
                    (dt == TIFF_ANY || fip->field_type == dt))
                const TIFFFieldInfo* fip = tif->tif_fieldinfo[i];
                if (fip->field_tag == tag &&
                    (dt == TIFF_ANY || fip->field_type == dt))


@@ -369,9 +425,6 @@ _TIFFFindFieldInfo(TIFF* tif, ttag_t tag, TIFFDataType dt)
        return ((const TIFFFieldInfo *)0);
 }
 
        return ((const TIFFFieldInfo *)0);
 }
 

-#include <assert.h>
-#include <stdio.h>
-

 const TIFFFieldInfo*
 _TIFFFieldWithTag(TIFF* tif, ttag_t tag)
 {
 const TIFFFieldInfo*
 _TIFFFieldWithTag(TIFF* tif, ttag_t tag)
 {


@@ -384,3 +437,50 @@ _TIFFFieldWithTag(TIFF* tif, ttag_t tag)
        }
        return (fip);
 }
        }
        return (fip);
 }

+
+const TIFFFieldInfo*
+_TIFFFindOrRegisterFieldInfo( TIFF *tif, ttag_t tag, TIFFDataType dt )
+
+{
+    const TIFFFieldInfo *fld;
+
+    fld = _TIFFFindFieldInfo( tif, tag, dt );
+    if( fld == NULL )
+    {
+        fld = _TIFFCreateAnonFieldInfo( tif, tag, dt );
+        _TIFFMergeFieldInfo( tif, fld, 1 );
+    }
+
+    return fld;
+}
+
+TIFFFieldInfo*
+_TIFFCreateAnonFieldInfo(TIFF *tif, ttag_t tag, TIFFDataType field_type)
+{
+    TIFFFieldInfo *fld;
+
+    fld = (TIFFFieldInfo *) _TIFFmalloc(sizeof (TIFFFieldInfo));
+    if (fld == NULL)
+       return NULL;
+    _TIFFmemset( fld, 0, sizeof(TIFFFieldInfo) );
+
+    fld->field_tag = tag;
+    fld->field_readcount = TIFF_VARIABLE;
+    fld->field_writecount = TIFF_VARIABLE;
+    fld->field_type = field_type;
+    fld->field_bit = FIELD_CUSTOM;
+    fld->field_oktochange = TRUE;
+    fld->field_passcount = TRUE;
+    fld->field_name = (char *) _TIFFmalloc(32);
+    if (fld->field_name == NULL) {
+       _TIFFfree(fld);
+       return NULL;
+    }
+
+    /* note that this name is a special sign to TIFFClose() and
+     * _TIFFSetupFieldInfo() to free the field
+     */
+    sprintf(fld->field_name, "Tag %d", (int) tag);
+
+    return fld;    
+}