tif_dir.c File Reference

#include <precomp.h>
#include <float.h>

Include dependency graph for tif_dir.c:

Go to the source code of this file.

Macros
#define	DATATYPE_VOID   0 /* !untyped data */
#define	DATATYPE_INT   1 /* !signed integer data */
#define	DATATYPE_UINT   2 /* !unsigned integer data */
#define	DATATYPE_IEEEFP   3 /* !IEEE floating point data */
#define	EXTRASAMPLE_COREL_UNASSALPHA   999
#define	CleanupField(member)

Functions
static void	setByteArray (void **vpp, void *vp, size_t nmemb, size_t elem_size)
void	_TIFFsetByteArray (void **vpp, void *vp, uint32 n)
void	_TIFFsetString (char **cpp, char *cp)
static void	_TIFFsetNString (char **cpp, char *cp, uint32 n)
void	_TIFFsetShortArray (uint16 **wpp, uint16 *wp, uint32 n)
void	_TIFFsetLongArray (uint32 **lpp, uint32 *lp, uint32 n)
static void	_TIFFsetLong8Array (uint64 **lpp, uint64 *lp, uint32 n)
void	_TIFFsetFloatArray (float **fpp, float *fp, uint32 n)
void	_TIFFsetDoubleArray (double **dpp, double *dp, uint32 n)
static void	setDoubleArrayOneValue (double **vpp, double value, size_t nmemb)
static int	setExtraSamples (TIFF *tif, va_list ap, uint32 *v)
static uint32	checkInkNamesString (TIFF *tif, uint32 slen, const char *s)
static int	_TIFFVSetField (TIFF *tif, uint32 tag, va_list ap)
static int	OkToChangeTag (TIFF *tif, uint32 tag)
int	TIFFSetField (TIFF *tif, uint32 tag,...)
int	TIFFUnsetField (TIFF *tif, uint32 tag)
int	TIFFVSetField (TIFF *tif, uint32 tag, va_list ap)
static int	_TIFFVGetField (TIFF *tif, uint32 tag, va_list ap)
int	TIFFGetField (TIFF *tif, uint32 tag,...)
int	TIFFVGetField (TIFF *tif, uint32 tag, va_list ap)
void	TIFFFreeDirectory (TIFF *tif)
TIFFExtendProc	TIFFSetTagExtender (TIFFExtendProc extender)
int	TIFFCreateDirectory (TIFF *tif)
int	TIFFCreateCustomDirectory (TIFF *tif, const TIFFFieldArray *infoarray)
int	TIFFCreateEXIFDirectory (TIFF *tif)
int	TIFFDefaultDirectory (TIFF *tif)
static int	TIFFAdvanceDirectory (TIFF *tif, uint64 *nextdir, uint64 *off)
uint16	TIFFNumberOfDirectories (TIFF *tif)
int	TIFFSetDirectory (TIFF *tif, uint16 dirn)
int	TIFFSetSubDirectory (TIFF *tif, uint64 diroff)
uint64	TIFFCurrentDirOffset (TIFF *tif)
int	TIFFLastDirectory (TIFF *tif)
int	TIFFUnlinkDirectory (TIFF *tif, uint16 dirn)

Variables
static TIFFExtendProc	_TIFFextender = (TIFFExtendProc) NULL

Macro Definition Documentation

CleanupField

#define CleanupField

(

member

)

Value:

    {       \
    if (td->member) {           \
    _TIFFfree(td->member);      \
    td->member = 0;         \
    }                   \
}

Definition at line 1257 of file tif_dir.c.

DATATYPE_IEEEFP

#define DATATYPE_IEEEFP   3 /* !IEEE floating point data */

Definition at line 40 of file tif_dir.c.

DATATYPE_INT

#define DATATYPE_INT   1 /* !signed integer data */

Definition at line 38 of file tif_dir.c.

DATATYPE_UINT

#define DATATYPE_UINT   2 /* !unsigned integer data */

Definition at line 39 of file tif_dir.c.

DATATYPE_VOID

#define DATATYPE_VOID   0 /* !untyped data */

Definition at line 37 of file tif_dir.c.

EXTRASAMPLE_COREL_UNASSALPHA

#define EXTRASAMPLE_COREL_UNASSALPHA   999

Function Documentation

_TIFFsetByteArray()

void _TIFFsetByteArray	(	void **	vpp,
		void *	vp,
		uint32	n
	)

Definition at line 57 of file tif_dir.c.

    { setByteArray(vpp, vp, n, 1); }

_TIFFsetDoubleArray()

void _TIFFsetDoubleArray	(	double **	dpp,
		double *	dp,
		uint32	n
	)

Definition at line 71 of file tif_dir.c.

    { setByteArray((void**) dpp, (void*) dp, n, sizeof (double)); }

Referenced by _TIFFVSetField().

_TIFFsetFloatArray()

void _TIFFsetFloatArray	(	float **	fpp,
		float *	fp,
		uint32	n
	)

Definition at line 69 of file tif_dir.c.

    { setByteArray((void**) fpp, (void*) fp, n, sizeof (float)); }

Referenced by _TIFFVSetField().

_TIFFsetLong8Array()

static void _TIFFsetLong8Array ( uint64 **  lpp, uint64 *  lp, uint32  n  )

static

Definition at line 67 of file tif_dir.c.

    { setByteArray((void**) lpp, (void*) lp, n, sizeof (uint64)); }

Referenced by _TIFFVSetField().

_TIFFsetLongArray()

void _TIFFsetLongArray	(	uint32 **	lpp,
		uint32 *	lp,
		uint32	n
	)

Definition at line 65 of file tif_dir.c.

    { setByteArray((void**) lpp, (void*) lp, n, sizeof (uint32)); }

_TIFFsetNString()

static void _TIFFsetNString ( char **  cpp, char *  cp, uint32  n  )

static

Definition at line 61 of file tif_dir.c.

    { setByteArray((void**) cpp, (void*) cp, n, 1); }

Referenced by _TIFFVSetField().

_TIFFsetShortArray()

void _TIFFsetShortArray	(	uint16 **	wpp,
		uint16 *	wp,
		uint32	n
	)

Definition at line 63 of file tif_dir.c.

    { setByteArray((void**) wpp, (void*) wp, n, sizeof (uint16)); }

Referenced by _TIFFVSetField(), setExtraSamples(), and TIFFReadDirectory().

_TIFFsetString()

void _TIFFsetString	(	char **	cpp,
		char *	cp
	)

Definition at line 59 of file tif_dir.c.

    { setByteArray((void**) cpp, (void*) cp, strlen(cp)+1, 1); }

_TIFFVGetField()

static int _TIFFVGetField ( TIFF *  tif, uint32  tag, va_list  ap  )

static

Definition at line 873 of file tif_dir.c.

{
    TIFFDirectory* td = &tif->tif_dir;
    int ret_val = 1;
    uint32 standard_tag = tag;
    const TIFFField* fip = TIFFFindField(tif, tag, TIFF_ANY);
    if( fip == NULL ) /* cannot happen since TIFFGetField() already checks it */
        return 0;
 
    /*
     * We want to force the custom code to be used for custom
     * fields even if the tag happens to match a well known 
     * one - important for reinterpreted handling of standard
     * tag values in custom directories (i.e. EXIF) 
     */
    if (fip->field_bit == FIELD_CUSTOM) {
        standard_tag = 0;
    }
    
        if( standard_tag == TIFFTAG_NUMBEROFINKS )
        {
            int i;
            for (i = 0; i < td->td_customValueCount; i++) {
                uint16 val;
                TIFFTagValue *tv = td->td_customValues + i;
                if (tv->info->field_tag != standard_tag)
                    continue;
                if( tv->value == NULL )
                    return 0;
                val = *(uint16 *)tv->value;
                /* Truncate to SamplesPerPixel, since the */
                /* setting code for INKNAMES assume that there are SamplesPerPixel */
                /* inknames. */
                /* Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2599 */
                if( val > td->td_samplesperpixel )
                {
                    TIFFWarningExt(tif->tif_clientdata,"_TIFFVGetField",
                                   "Truncating NumberOfInks from %u to %u",
                                   val, td->td_samplesperpixel);
                    val = td->td_samplesperpixel;
                }
                *va_arg(ap, uint16*) = val;
                return 1;
            }
            return 0;
        }
 
    switch (standard_tag) {
        case TIFFTAG_SUBFILETYPE:
            *va_arg(ap, uint32*) = td->td_subfiletype;
            break;
        case TIFFTAG_IMAGEWIDTH:
            *va_arg(ap, uint32*) = td->td_imagewidth;
            break;
        case TIFFTAG_IMAGELENGTH:
            *va_arg(ap, uint32*) = td->td_imagelength;
            break;
        case TIFFTAG_BITSPERSAMPLE:
            *va_arg(ap, uint16*) = td->td_bitspersample;
            break;
        case TIFFTAG_COMPRESSION:
            *va_arg(ap, uint16*) = td->td_compression;
            break;
        case TIFFTAG_PHOTOMETRIC:
            *va_arg(ap, uint16*) = td->td_photometric;
            break;
        case TIFFTAG_THRESHHOLDING:
            *va_arg(ap, uint16*) = td->td_threshholding;
            break;
        case TIFFTAG_FILLORDER:
            *va_arg(ap, uint16*) = td->td_fillorder;
            break;
        case TIFFTAG_ORIENTATION:
            *va_arg(ap, uint16*) = td->td_orientation;
            break;
        case TIFFTAG_SAMPLESPERPIXEL:
            *va_arg(ap, uint16*) = td->td_samplesperpixel;
            break;
        case TIFFTAG_ROWSPERSTRIP:
            *va_arg(ap, uint32*) = td->td_rowsperstrip;
            break;
        case TIFFTAG_MINSAMPLEVALUE:
            *va_arg(ap, uint16*) = td->td_minsamplevalue;
            break;
        case TIFFTAG_MAXSAMPLEVALUE:
            *va_arg(ap, uint16*) = td->td_maxsamplevalue;
            break;
        case TIFFTAG_SMINSAMPLEVALUE:
            if (tif->tif_flags & TIFF_PERSAMPLE)
                *va_arg(ap, double**) = td->td_sminsamplevalue;
            else
            {
                /* libtiff historically treats this as a single value. */
                uint16 i;
                double v = td->td_sminsamplevalue[0];
                for (i=1; i < td->td_samplesperpixel; ++i)
                    if( td->td_sminsamplevalue[i] < v )
                        v = td->td_sminsamplevalue[i];
                *va_arg(ap, double*) = v;
            }
            break;
        case TIFFTAG_SMAXSAMPLEVALUE:
            if (tif->tif_flags & TIFF_PERSAMPLE)
                *va_arg(ap, double**) = td->td_smaxsamplevalue;
            else
            {
                /* libtiff historically treats this as a single value. */
                uint16 i;
                double v = td->td_smaxsamplevalue[0];
                for (i=1; i < td->td_samplesperpixel; ++i)
                    if( td->td_smaxsamplevalue[i] > v )
                        v = td->td_smaxsamplevalue[i];
                *va_arg(ap, double*) = v;
            }
            break;
        case TIFFTAG_XRESOLUTION:
            *va_arg(ap, float*) = td->td_xresolution;
            break;
        case TIFFTAG_YRESOLUTION:
            *va_arg(ap, float*) = td->td_yresolution;
            break;
        case TIFFTAG_PLANARCONFIG:
            *va_arg(ap, uint16*) = td->td_planarconfig;
            break;
        case TIFFTAG_XPOSITION:
            *va_arg(ap, float*) = td->td_xposition;
            break;
        case TIFFTAG_YPOSITION:
            *va_arg(ap, float*) = td->td_yposition;
            break;
        case TIFFTAG_RESOLUTIONUNIT:
            *va_arg(ap, uint16*) = td->td_resolutionunit;
            break;
        case TIFFTAG_PAGENUMBER:
            *va_arg(ap, uint16*) = td->td_pagenumber[0];
            *va_arg(ap, uint16*) = td->td_pagenumber[1];
            break;
        case TIFFTAG_HALFTONEHINTS:
            *va_arg(ap, uint16*) = td->td_halftonehints[0];
            *va_arg(ap, uint16*) = td->td_halftonehints[1];
            break;
        case TIFFTAG_COLORMAP:
            *va_arg(ap, uint16**) = td->td_colormap[0];
            *va_arg(ap, uint16**) = td->td_colormap[1];
            *va_arg(ap, uint16**) = td->td_colormap[2];
            break;
        case TIFFTAG_STRIPOFFSETS:
        case TIFFTAG_TILEOFFSETS:
            _TIFFFillStriles( tif );
            *va_arg(ap, uint64**) = td->td_stripoffset_p;
            break;
        case TIFFTAG_STRIPBYTECOUNTS:
        case TIFFTAG_TILEBYTECOUNTS:
            _TIFFFillStriles( tif );
            *va_arg(ap, uint64**) = td->td_stripbytecount_p;
            break;
        case TIFFTAG_MATTEING:
            *va_arg(ap, uint16*) =
                (td->td_extrasamples == 1 &&
                td->td_sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
            break;
        case TIFFTAG_EXTRASAMPLES:
            *va_arg(ap, uint16*) = td->td_extrasamples;
            *va_arg(ap, uint16**) = td->td_sampleinfo;
            break;
        case TIFFTAG_TILEWIDTH:
            *va_arg(ap, uint32*) = td->td_tilewidth;
            break;
        case TIFFTAG_TILELENGTH:
            *va_arg(ap, uint32*) = td->td_tilelength;
            break;
        case TIFFTAG_TILEDEPTH:
            *va_arg(ap, uint32*) = td->td_tiledepth;
            break;
        case TIFFTAG_DATATYPE:
            switch (td->td_sampleformat) {
                case SAMPLEFORMAT_UINT:
                    *va_arg(ap, uint16*) = DATATYPE_UINT;
                    break;
                case SAMPLEFORMAT_INT:
                    *va_arg(ap, uint16*) = DATATYPE_INT;
                    break;
                case SAMPLEFORMAT_IEEEFP:
                    *va_arg(ap, uint16*) = DATATYPE_IEEEFP;
                    break;
                case SAMPLEFORMAT_VOID:
                    *va_arg(ap, uint16*) = DATATYPE_VOID;
                    break;
            }
            break;
        case TIFFTAG_SAMPLEFORMAT:
            *va_arg(ap, uint16*) = td->td_sampleformat;
            break;
        case TIFFTAG_IMAGEDEPTH:
            *va_arg(ap, uint32*) = td->td_imagedepth;
            break;
        case TIFFTAG_SUBIFD:
            *va_arg(ap, uint16*) = td->td_nsubifd;
            *va_arg(ap, uint64**) = td->td_subifd;
            break;
        case TIFFTAG_YCBCRPOSITIONING:
            *va_arg(ap, uint16*) = td->td_ycbcrpositioning;
            break;
        case TIFFTAG_YCBCRSUBSAMPLING:
            *va_arg(ap, uint16*) = td->td_ycbcrsubsampling[0];
            *va_arg(ap, uint16*) = td->td_ycbcrsubsampling[1];
            break;
        case TIFFTAG_TRANSFERFUNCTION:
            *va_arg(ap, uint16**) = td->td_transferfunction[0];
            if (td->td_samplesperpixel - td->td_extrasamples > 1) {
                *va_arg(ap, uint16**) = td->td_transferfunction[1];
                *va_arg(ap, uint16**) = td->td_transferfunction[2];
            } else {
                *va_arg(ap, uint16**) = NULL;
                *va_arg(ap, uint16**) = NULL;
            }
            break;
        case TIFFTAG_REFERENCEBLACKWHITE:
            *va_arg(ap, float**) = td->td_refblackwhite;
            break;
        case TIFFTAG_INKNAMES:
            *va_arg(ap, char**) = td->td_inknames;
            break;
        default:
            {
                int i;
 
                /*
                 * This can happen if multiple images are open
                 * with different codecs which have private
                 * tags.  The global tag information table may
                 * then have tags that are valid for one file
                 * but not the other. If the client tries to
                 * get a tag that is not valid for the image's
                 * codec then we'll arrive here.
                 */
                if( fip->field_bit != FIELD_CUSTOM )
                {
                    TIFFErrorExt(tif->tif_clientdata, "_TIFFVGetField",
                        "%s: Invalid %stag \"%s\" "
                        "(not supported by codec)",
                        tif->tif_name,
                        isPseudoTag(tag) ? "pseudo-" : "",
                        fip->field_name);
                    ret_val = 0;
                    break;
                }
 
                /*
                 * Do we have a custom value?
                 */
                ret_val = 0;
                for (i = 0; i < td->td_customValueCount; i++) {
                    TIFFTagValue *tv = td->td_customValues + i;
 
                    if (tv->info->field_tag != tag)
                        continue;
 
                    if (fip->field_passcount) {
                        if (fip->field_readcount == TIFF_VARIABLE2)
                            *va_arg(ap, uint32*) = (uint32)tv->count;
                        else  /* Assume TIFF_VARIABLE */
                            *va_arg(ap, uint16*) = (uint16)tv->count;
                        *va_arg(ap, void **) = tv->value;
                        ret_val = 1;
                    } else if (fip->field_tag == TIFFTAG_DOTRANGE
                           && strcmp(fip->field_name,"DotRange") == 0) {
                        /* TODO: This is an evil exception and should not have been
                           handled this way ... likely best if we move it into
                           the directory structure with an explicit field in 
                           libtiff 4.1 and assign it a FIELD_ value */
                        *va_arg(ap, uint16*) = ((uint16 *)tv->value)[0];
                        *va_arg(ap, uint16*) = ((uint16 *)tv->value)[1];
                        ret_val = 1;
                    } else {
                        if (fip->field_type == TIFF_ASCII
                            || fip->field_readcount == TIFF_VARIABLE
                            || fip->field_readcount == TIFF_VARIABLE2
                            || fip->field_readcount == TIFF_SPP
                            || tv->count > 1) {
                            *va_arg(ap, void **) = tv->value;
                            ret_val = 1;
                        } else {
                            char *val = (char *)tv->value;
                            assert( tv->count == 1 );
                            switch (fip->field_type) {
                            case TIFF_BYTE:
                            case TIFF_UNDEFINED:
                                *va_arg(ap, uint8*) =
                                    *(uint8 *)val;
                                ret_val = 1;
                                break;
                            case TIFF_SBYTE:
                                *va_arg(ap, int8*) =
                                    *(int8 *)val;
                                ret_val = 1;
                                break;
                            case TIFF_SHORT:
                                *va_arg(ap, uint16*) =
                                    *(uint16 *)val;
                                ret_val = 1;
                                break;
                            case TIFF_SSHORT:
                                *va_arg(ap, int16*) =
                                    *(int16 *)val;
                                ret_val = 1;
                                break;
                            case TIFF_LONG:
                            case TIFF_IFD:
                                *va_arg(ap, uint32*) =
                                    *(uint32 *)val;
                                ret_val = 1;
                                break;
                            case TIFF_SLONG:
                                *va_arg(ap, int32*) =
                                    *(int32 *)val;
                                ret_val = 1;
                                break;
                            case TIFF_LONG8:
                            case TIFF_IFD8:
                                *va_arg(ap, uint64*) =
                                    *(uint64 *)val;
                                ret_val = 1;
                                break;
                            case TIFF_SLONG8:
                                *va_arg(ap, int64*) =
                                    *(int64 *)val;
                                ret_val = 1;
                                break;
                            case TIFF_RATIONAL:
                            case TIFF_SRATIONAL:
                            case TIFF_FLOAT:
                                *va_arg(ap, float*) =
                                    *(float *)val;
                                ret_val = 1;
                                break;
                            case TIFF_DOUBLE:
                                *va_arg(ap, double*) =
                                    *(double *)val;
                                ret_val = 1;
                                break;
                            default:
                                ret_val = 0;
                                break;
                            }
                        }
                    }
                    break;
                }
            }
    }
    return(ret_val);
}

Referenced by TIFFDefaultDirectory().

_TIFFVSetField()

static int _TIFFVSetField ( TIFF *  tif, uint32  tag, va_list  ap  )

static

Definition at line 171 of file tif_dir.c.

{
    static const char module[] = "_TIFFVSetField";
 
    TIFFDirectory* td = &tif->tif_dir;
    int status = 1;
    uint32 v32, i, v;
    double dblval;
    char* s;
    const TIFFField *fip = TIFFFindField(tif, tag, TIFF_ANY);
    uint32 standard_tag = tag;
    if( fip == NULL ) /* cannot happen since OkToChangeTag() already checks it */
        return 0;
    /*
     * We want to force the custom code to be used for custom
     * fields even if the tag happens to match a well known 
     * one - important for reinterpreted handling of standard
     * tag values in custom directories (i.e. EXIF) 
     */
    if (fip->field_bit == FIELD_CUSTOM) {
        standard_tag = 0;
    }
 
    switch (standard_tag) {
    case TIFFTAG_SUBFILETYPE:
        td->td_subfiletype = (uint32) va_arg(ap, uint32);
        break;
    case TIFFTAG_IMAGEWIDTH:
        td->td_imagewidth = (uint32) va_arg(ap, uint32);
        break;
    case TIFFTAG_IMAGELENGTH:
        td->td_imagelength = (uint32) va_arg(ap, uint32);
        break;
    case TIFFTAG_BITSPERSAMPLE:
        td->td_bitspersample = (uint16) va_arg(ap, uint16_vap);
        /*
         * If the data require post-decoding processing to byte-swap
         * samples, set it up here.  Note that since tags are required
         * to be ordered, compression code can override this behaviour
         * in the setup method if it wants to roll the post decoding
         * work in with its normal work.
         */
        if (tif->tif_flags & TIFF_SWAB) {
            if (td->td_bitspersample == 8)
                tif->tif_postdecode = _TIFFNoPostDecode;
            else if (td->td_bitspersample == 16)
                tif->tif_postdecode = _TIFFSwab16BitData;
            else if (td->td_bitspersample == 24)
                tif->tif_postdecode = _TIFFSwab24BitData;
            else if (td->td_bitspersample == 32)
                tif->tif_postdecode = _TIFFSwab32BitData;
            else if (td->td_bitspersample == 64)
                tif->tif_postdecode = _TIFFSwab64BitData;
            else if (td->td_bitspersample == 128) /* two 64's */
                tif->tif_postdecode = _TIFFSwab64BitData;
        }
        break;
    case TIFFTAG_COMPRESSION:
        v = (uint16) va_arg(ap, uint16_vap);
        /*
         * If we're changing the compression scheme, the notify the
         * previous module so that it can cleanup any state it's
         * setup.
         */
        if (TIFFFieldSet(tif, FIELD_COMPRESSION)) {
            if ((uint32)td->td_compression == v)
                break;
            (*tif->tif_cleanup)(tif);
            tif->tif_flags &= ~TIFF_CODERSETUP;
        }
        /*
         * Setup new compression routine state.
         */
        if( (status = TIFFSetCompressionScheme(tif, v)) != 0 )
            td->td_compression = (uint16) v;
        else
            status = 0;
        break;
    case TIFFTAG_PHOTOMETRIC:
        td->td_photometric = (uint16) va_arg(ap, uint16_vap);
        break;
    case TIFFTAG_THRESHHOLDING:
        td->td_threshholding = (uint16) va_arg(ap, uint16_vap);
        break;
    case TIFFTAG_FILLORDER:
        v = (uint16) va_arg(ap, uint16_vap);
        if (v != FILLORDER_LSB2MSB && v != FILLORDER_MSB2LSB)
            goto badvalue;
        td->td_fillorder = (uint16) v;
        break;
    case TIFFTAG_ORIENTATION:
        v = (uint16) va_arg(ap, uint16_vap);
        if (v < ORIENTATION_TOPLEFT || ORIENTATION_LEFTBOT < v)
            goto badvalue;
        else
            td->td_orientation = (uint16) v;
        break;
    case TIFFTAG_SAMPLESPERPIXEL:
        v = (uint16) va_arg(ap, uint16_vap);
        if (v == 0)
            goto badvalue;
        if( v != td->td_samplesperpixel )
        {
            /* See http://bugzilla.maptools.org/show_bug.cgi?id=2500 */
            if( td->td_sminsamplevalue != NULL )
            {
                TIFFWarningExt(tif->tif_clientdata,module,
                    "SamplesPerPixel tag value is changing, "
                    "but SMinSampleValue tag was read with a different value. Cancelling it");
                TIFFClrFieldBit(tif,FIELD_SMINSAMPLEVALUE);
                _TIFFfree(td->td_sminsamplevalue);
                td->td_sminsamplevalue = NULL;
            }
            if( td->td_smaxsamplevalue != NULL )
            {
                TIFFWarningExt(tif->tif_clientdata,module,
                    "SamplesPerPixel tag value is changing, "
                    "but SMaxSampleValue tag was read with a different value. Cancelling it");
                TIFFClrFieldBit(tif,FIELD_SMAXSAMPLEVALUE);
                _TIFFfree(td->td_smaxsamplevalue);
                td->td_smaxsamplevalue = NULL;
            }
            /* Test if 3 transfer functions instead of just one are now needed
               See http://bugzilla.maptools.org/show_bug.cgi?id=2820 */
            if( td->td_transferfunction[0] != NULL && (v - td->td_extrasamples > 1) &&
                !(td->td_samplesperpixel - td->td_extrasamples > 1))
            {
                    TIFFWarningExt(tif->tif_clientdata,module,
                        "SamplesPerPixel tag value is changing, "
                        "but TransferFunction was read with a different value. Cancelling it");
                    TIFFClrFieldBit(tif,FIELD_TRANSFERFUNCTION);
                    _TIFFfree(td->td_transferfunction[0]);
                    td->td_transferfunction[0] = NULL;
            }
        }
        td->td_samplesperpixel = (uint16) v;
        break;
    case TIFFTAG_ROWSPERSTRIP:
        v32 = (uint32) va_arg(ap, uint32);
        if (v32 == 0)
            goto badvalue32;
        td->td_rowsperstrip = v32;
        if (!TIFFFieldSet(tif, FIELD_TILEDIMENSIONS)) {
            td->td_tilelength = v32;
            td->td_tilewidth = td->td_imagewidth;
        }
        break;
    case TIFFTAG_MINSAMPLEVALUE:
        td->td_minsamplevalue = (uint16) va_arg(ap, uint16_vap);
        break;
    case TIFFTAG_MAXSAMPLEVALUE:
        td->td_maxsamplevalue = (uint16) va_arg(ap, uint16_vap);
        break;
    case TIFFTAG_SMINSAMPLEVALUE:
        if (tif->tif_flags & TIFF_PERSAMPLE)
            _TIFFsetDoubleArray(&td->td_sminsamplevalue, va_arg(ap, double*), td->td_samplesperpixel);
        else
            setDoubleArrayOneValue(&td->td_sminsamplevalue, va_arg(ap, double), td->td_samplesperpixel);
        break;
    case TIFFTAG_SMAXSAMPLEVALUE:
        if (tif->tif_flags & TIFF_PERSAMPLE)
            _TIFFsetDoubleArray(&td->td_smaxsamplevalue, va_arg(ap, double*), td->td_samplesperpixel);
        else
            setDoubleArrayOneValue(&td->td_smaxsamplevalue, va_arg(ap, double), td->td_samplesperpixel);
        break;
    case TIFFTAG_XRESOLUTION:
        dblval = va_arg(ap, double);
        if( dblval < 0 )
            goto badvaluedouble;
        td->td_xresolution = _TIFFClampDoubleToFloat( dblval );
        break;
    case TIFFTAG_YRESOLUTION:
        dblval = va_arg(ap, double);
        if( dblval < 0 )
            goto badvaluedouble;
        td->td_yresolution = _TIFFClampDoubleToFloat( dblval );
        break;
    case TIFFTAG_PLANARCONFIG:
        v = (uint16) va_arg(ap, uint16_vap);
        if (v != PLANARCONFIG_CONTIG && v != PLANARCONFIG_SEPARATE)
            goto badvalue;
        td->td_planarconfig = (uint16) v;
        break;
    case TIFFTAG_XPOSITION:
        td->td_xposition = _TIFFClampDoubleToFloat( va_arg(ap, double) );
        break;
    case TIFFTAG_YPOSITION:
        td->td_yposition = _TIFFClampDoubleToFloat( va_arg(ap, double) );
        break;
    case TIFFTAG_RESOLUTIONUNIT:
        v = (uint16) va_arg(ap, uint16_vap);
        if (v < RESUNIT_NONE || RESUNIT_CENTIMETER < v)
            goto badvalue;
        td->td_resolutionunit = (uint16) v;
        break;
    case TIFFTAG_PAGENUMBER:
        td->td_pagenumber[0] = (uint16) va_arg(ap, uint16_vap);
        td->td_pagenumber[1] = (uint16) va_arg(ap, uint16_vap);
        break;
    case TIFFTAG_HALFTONEHINTS:
        td->td_halftonehints[0] = (uint16) va_arg(ap, uint16_vap);
        td->td_halftonehints[1] = (uint16) va_arg(ap, uint16_vap);
        break;
    case TIFFTAG_COLORMAP:
        v32 = (uint32)(1L<<td->td_bitspersample);
        _TIFFsetShortArray(&td->td_colormap[0], va_arg(ap, uint16*), v32);
        _TIFFsetShortArray(&td->td_colormap[1], va_arg(ap, uint16*), v32);
        _TIFFsetShortArray(&td->td_colormap[2], va_arg(ap, uint16*), v32);
        break;
    case TIFFTAG_EXTRASAMPLES:
        if (!setExtraSamples(tif, ap, &v))
            goto badvalue;
        break;
    case TIFFTAG_MATTEING:
        td->td_extrasamples =  (((uint16) va_arg(ap, uint16_vap)) != 0);
        if (td->td_extrasamples) {
            uint16 sv = EXTRASAMPLE_ASSOCALPHA;
            _TIFFsetShortArray(&td->td_sampleinfo, &sv, 1);
        }
        break;
    case TIFFTAG_TILEWIDTH:
        v32 = (uint32) va_arg(ap, uint32);
        if (v32 % 16) {
            if (tif->tif_mode != O_RDONLY)
                goto badvalue32;
            TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
                "Nonstandard tile width %d, convert file", v32);
        }
        td->td_tilewidth = v32;
        tif->tif_flags |= TIFF_ISTILED;
        break;
    case TIFFTAG_TILELENGTH:
        v32 = (uint32) va_arg(ap, uint32);
        if (v32 % 16) {
            if (tif->tif_mode != O_RDONLY)
                goto badvalue32;
            TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
                "Nonstandard tile length %d, convert file", v32);
        }
        td->td_tilelength = v32;
        tif->tif_flags |= TIFF_ISTILED;
        break;
    case TIFFTAG_TILEDEPTH:
        v32 = (uint32) va_arg(ap, uint32);
        if (v32 == 0)
            goto badvalue32;
        td->td_tiledepth = v32;
        break;
    case TIFFTAG_DATATYPE:
        v = (uint16) va_arg(ap, uint16_vap);
        switch (v) {
        case DATATYPE_VOID: v = SAMPLEFORMAT_VOID;  break;
        case DATATYPE_INT:  v = SAMPLEFORMAT_INT;   break;
        case DATATYPE_UINT: v = SAMPLEFORMAT_UINT;  break;
        case DATATYPE_IEEEFP:   v = SAMPLEFORMAT_IEEEFP;break;
        default:        goto badvalue;
        }
        td->td_sampleformat = (uint16) v;
        break;
    case TIFFTAG_SAMPLEFORMAT:
        v = (uint16) va_arg(ap, uint16_vap);
        if (v < SAMPLEFORMAT_UINT || SAMPLEFORMAT_COMPLEXIEEEFP < v)
            goto badvalue;
        td->td_sampleformat = (uint16) v;
 
        /*  Try to fix up the SWAB function for complex data. */
        if( td->td_sampleformat == SAMPLEFORMAT_COMPLEXINT
            && td->td_bitspersample == 32
            && tif->tif_postdecode == _TIFFSwab32BitData )
            tif->tif_postdecode = _TIFFSwab16BitData;
        else if( (td->td_sampleformat == SAMPLEFORMAT_COMPLEXINT
              || td->td_sampleformat == SAMPLEFORMAT_COMPLEXIEEEFP)
             && td->td_bitspersample == 64
             && tif->tif_postdecode == _TIFFSwab64BitData )
            tif->tif_postdecode = _TIFFSwab32BitData;
        break;
    case TIFFTAG_IMAGEDEPTH:
        td->td_imagedepth = (uint32) va_arg(ap, uint32);
        break;
    case TIFFTAG_SUBIFD:
        if ((tif->tif_flags & TIFF_INSUBIFD) == 0) {
            td->td_nsubifd = (uint16) va_arg(ap, uint16_vap);
            _TIFFsetLong8Array(&td->td_subifd, (uint64*) va_arg(ap, uint64*),
                (uint32) td->td_nsubifd);
        } else {
            TIFFErrorExt(tif->tif_clientdata, module,
                     "%s: Sorry, cannot nest SubIFDs",
                     tif->tif_name);
            status = 0;
        }
        break;
    case TIFFTAG_YCBCRPOSITIONING:
        td->td_ycbcrpositioning = (uint16) va_arg(ap, uint16_vap);
        break;
    case TIFFTAG_YCBCRSUBSAMPLING:
        td->td_ycbcrsubsampling[0] = (uint16) va_arg(ap, uint16_vap);
        td->td_ycbcrsubsampling[1] = (uint16) va_arg(ap, uint16_vap);
        break;
    case TIFFTAG_TRANSFERFUNCTION:
        v = (td->td_samplesperpixel - td->td_extrasamples) > 1 ? 3 : 1;
        for (i = 0; i < v; i++)
            _TIFFsetShortArray(&td->td_transferfunction[i],
                va_arg(ap, uint16*), 1U<<td->td_bitspersample);
        break;
    case TIFFTAG_REFERENCEBLACKWHITE:
        /* XXX should check for null range */
        _TIFFsetFloatArray(&td->td_refblackwhite, va_arg(ap, float*), 6);
        break;
    case TIFFTAG_INKNAMES:
        v = (uint16) va_arg(ap, uint16_vap);
        s = va_arg(ap, char*);
        v = checkInkNamesString(tif, v, s);
        status = v > 0;
        if( v > 0 ) {
            _TIFFsetNString(&td->td_inknames, s, v);
            td->td_inknameslen = v;
        }
        break;
    case TIFFTAG_PERSAMPLE:
        v = (uint16) va_arg(ap, uint16_vap);
        if( v == PERSAMPLE_MULTI )
            tif->tif_flags |= TIFF_PERSAMPLE;
        else
            tif->tif_flags &= ~TIFF_PERSAMPLE;
        break;
    default: {
        TIFFTagValue *tv;
        int tv_size, iCustom;
 
        /*
         * This can happen if multiple images are open with different
         * codecs which have private tags.  The global tag information
         * table may then have tags that are valid for one file but not
         * the other. If the client tries to set a tag that is not valid
         * for the image's codec then we'll arrive here.  This
         * happens, for example, when tiffcp is used to convert between
         * compression schemes and codec-specific tags are blindly copied.
         */
        if(fip->field_bit != FIELD_CUSTOM) {
            TIFFErrorExt(tif->tif_clientdata, module,
                "%s: Invalid %stag \"%s\" (not supported by codec)",
                tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "",
                fip->field_name);
            status = 0;
            break;
        }
 
        /*
         * Find the existing entry for this custom value.
         */
        tv = NULL;
        for (iCustom = 0; iCustom < td->td_customValueCount; iCustom++) {
            if (td->td_customValues[iCustom].info->field_tag == tag) {
                tv = td->td_customValues + iCustom;
                if (tv->value != NULL) {
                    _TIFFfree(tv->value);
                    tv->value = NULL;
                }
                break;
            }
        }
 
        /*
         * Grow the custom list if the entry was not found.
         */
        if(tv == NULL) {
            TIFFTagValue *new_customValues;
 
            td->td_customValueCount++;
            new_customValues = (TIFFTagValue *)
                _TIFFrealloc(td->td_customValues,
                sizeof(TIFFTagValue) * td->td_customValueCount);
            if (!new_customValues) {
                TIFFErrorExt(tif->tif_clientdata, module,
                    "%s: Failed to allocate space for list of custom values",
                    tif->tif_name);
                status = 0;
                goto end;
            }
 
            td->td_customValues = new_customValues;
 
            tv = td->td_customValues + (td->td_customValueCount - 1);
            tv->info = fip;
            tv->value = NULL;
            tv->count = 0;
        }
 
        /*
         * Set custom value ... save a copy of the custom tag value.
         */
        tv_size = _TIFFDataSize(fip->field_type);
        if (tv_size == 0) {
            status = 0;
            TIFFErrorExt(tif->tif_clientdata, module,
                "%s: Bad field type %d for \"%s\"",
                tif->tif_name, fip->field_type,
                fip->field_name);
            goto end;
        }
 
        if (fip->field_type == TIFF_ASCII)
        {
            uint32 ma;
            char* mb;
            if (fip->field_passcount)
            {
                assert(fip->field_writecount==TIFF_VARIABLE2);
                ma=(uint32)va_arg(ap,uint32);
                mb=(char*)va_arg(ap,char*);
            }
            else
            {
                mb=(char*)va_arg(ap,char*);
                ma=(uint32)(strlen(mb)+1);
            }
            tv->count=ma;
            setByteArray(&tv->value,mb,ma,1);
        }
        else
        {
            if (fip->field_passcount) {
                if (fip->field_writecount == TIFF_VARIABLE2)
                    tv->count = (uint32) va_arg(ap, uint32);
                else
                    tv->count = (int) va_arg(ap, int);
            } else if (fip->field_writecount == TIFF_VARIABLE
               || fip->field_writecount == TIFF_VARIABLE2)
                tv->count = 1;
            else if (fip->field_writecount == TIFF_SPP)
                tv->count = td->td_samplesperpixel;
            else
                tv->count = fip->field_writecount;
 
            if (tv->count == 0) {
                status = 0;
                TIFFErrorExt(tif->tif_clientdata, module,
                         "%s: Null count for \"%s\" (type "
                         "%d, writecount %d, passcount %d)",
                         tif->tif_name,
                         fip->field_name,
                         fip->field_type,
                         fip->field_writecount,
                         fip->field_passcount);
                goto end;
            }
 
            tv->value = _TIFFCheckMalloc(tif, tv->count, tv_size,
                "custom tag binary object");
            if (!tv->value) {
                status = 0;
                goto end;
            }
 
            if (fip->field_tag == TIFFTAG_DOTRANGE 
                && strcmp(fip->field_name,"DotRange") == 0) {
                /* TODO: This is an evil exception and should not have been
                   handled this way ... likely best if we move it into
                   the directory structure with an explicit field in 
                   libtiff 4.1 and assign it a FIELD_ value */
                uint16 v2[2];
                v2[0] = (uint16)va_arg(ap, int);
                v2[1] = (uint16)va_arg(ap, int);
                _TIFFmemcpy(tv->value, &v2, 4);
            }
 
            else if (fip->field_passcount
                  || fip->field_writecount == TIFF_VARIABLE
                  || fip->field_writecount == TIFF_VARIABLE2
                  || fip->field_writecount == TIFF_SPP
                  || tv->count > 1) {
                _TIFFmemcpy(tv->value, va_arg(ap, void *),
                    tv->count * tv_size);
            } else {
                char *val = (char *)tv->value;
                assert( tv->count == 1 );
 
                switch (fip->field_type) {
                case TIFF_BYTE:
                case TIFF_UNDEFINED:
                    {
                        uint8 v2 = (uint8)va_arg(ap, int);
                        _TIFFmemcpy(val, &v2, tv_size);
                    }
                    break;
                case TIFF_SBYTE:
                    {
                        int8 v2 = (int8)va_arg(ap, int);
                        _TIFFmemcpy(val, &v2, tv_size);
                    }
                    break;
                case TIFF_SHORT:
                    {
                        uint16 v2 = (uint16)va_arg(ap, int);
                        _TIFFmemcpy(val, &v2, tv_size);
                    }
                    break;
                case TIFF_SSHORT:
                    {
                        int16 v2 = (int16)va_arg(ap, int);
                        _TIFFmemcpy(val, &v2, tv_size);
                    }
                    break;
                case TIFF_LONG:
                case TIFF_IFD:
                    {
                        uint32 v2 = va_arg(ap, uint32);
                        _TIFFmemcpy(val, &v2, tv_size);
                    }
                    break;
                case TIFF_SLONG:
                    {
                        int32 v2 = va_arg(ap, int32);
                        _TIFFmemcpy(val, &v2, tv_size);
                    }
                    break;
                case TIFF_LONG8:
                case TIFF_IFD8:
                    {
                        uint64 v2 = va_arg(ap, uint64);
                        _TIFFmemcpy(val, &v2, tv_size);
                    }
                    break;
                case TIFF_SLONG8:
                    {
                        int64 v2 = va_arg(ap, int64);
                        _TIFFmemcpy(val, &v2, tv_size);
                    }
                    break;
                case TIFF_RATIONAL:
                case TIFF_SRATIONAL:
                case TIFF_FLOAT:
                    {
                        float v2 = _TIFFClampDoubleToFloat(va_arg(ap, double));
                        _TIFFmemcpy(val, &v2, tv_size);
                    }
                    break;
                case TIFF_DOUBLE:
                    {
                        double v2 = va_arg(ap, double);
                        _TIFFmemcpy(val, &v2, tv_size);
                    }
                    break;
                default:
                    _TIFFmemset(val, 0, tv_size);
                    status = 0;
                    break;
                }
            }
        }
    }
    }
    if (status) {
        const TIFFField* fip2=TIFFFieldWithTag(tif,tag);
        if (fip2)                
            TIFFSetFieldBit(tif, fip2->field_bit);
        tif->tif_flags |= TIFF_DIRTYDIRECT;
    }
 
end:
    va_end(ap);
    return (status);
badvalue:
        {
        const TIFFField* fip2=TIFFFieldWithTag(tif,tag);
        TIFFErrorExt(tif->tif_clientdata, module,
             "%s: Bad value %u for \"%s\" tag",
             tif->tif_name, v,
             fip2 ? fip2->field_name : "Unknown");
        va_end(ap);
        }
    return (0);
badvalue32:
        {
        const TIFFField* fip2=TIFFFieldWithTag(tif,tag);
        TIFFErrorExt(tif->tif_clientdata, module,
             "%s: Bad value %u for \"%s\" tag",
             tif->tif_name, v32,
             fip2 ? fip2->field_name : "Unknown");
        va_end(ap);
        }
    return (0);
badvaluedouble:
        {
        const TIFFField* fip2=TIFFFieldWithTag(tif,tag);
        TIFFErrorExt(tif->tif_clientdata, module,
             "%s: Bad value %f for \"%s\" tag",
             tif->tif_name, dblval,
             fip2 ? fip2->field_name : "Unknown");
        va_end(ap);
        }
    return (0);
}

Referenced by TIFFDefaultDirectory().

checkInkNamesString()

static uint32 checkInkNamesString ( TIFF *  tif, uint32  slen, const char *  s  )

static

Definition at line 145 of file tif_dir.c.

{
    TIFFDirectory* td = &tif->tif_dir;
    uint16 i = td->td_samplesperpixel;
 
    if (slen > 0) {
        const char* ep = s+slen;
        const char* cp = s;
        for (; i > 0; i--) {
            for (; cp < ep && *cp != '\0'; cp++) {}
            if (cp >= ep)
                goto bad;
            cp++;               /* skip \0 */
        }
        return ((uint32)(cp-s));
    }
bad:
    TIFFErrorExt(tif->tif_clientdata, "TIFFSetField",
        "%s: Invalid InkNames value; expecting %d names, found %d",
        tif->tif_name,
        td->td_samplesperpixel,
        td->td_samplesperpixel-i);
    return (0);
}

Referenced by _TIFFVSetField().

OkToChangeTag()

static int OkToChangeTag ( TIFF *  tif, uint32  tag  )

static

Definition at line 775 of file tif_dir.c.

{
    const TIFFField* fip = TIFFFindField(tif, tag, TIFF_ANY);
    if (!fip) {         /* unknown tag */
        TIFFErrorExt(tif->tif_clientdata, "TIFFSetField", "%s: Unknown %stag %u",
            tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "", tag);
        return (0);
    }
    if (tag != TIFFTAG_IMAGELENGTH && (tif->tif_flags & TIFF_BEENWRITING) &&
        !fip->field_oktochange) {
        /*
         * Consult info table to see if tag can be changed
         * after we've started writing.  We only allow changes
         * to those tags that don't/shouldn't affect the
         * compression and/or format of the data.
         */
        TIFFErrorExt(tif->tif_clientdata, "TIFFSetField",
            "%s: Cannot modify tag \"%s\" while writing",
            tif->tif_name, fip->field_name);
        return (0);
    }
    return (1);
}

Referenced by TIFFVSetField().

setByteArray()

static void setByteArray ( void **  vpp, void *  vp, size_t  nmemb, size_t  elem_size  )

static

Definition at line 43 of file tif_dir.c.

{
    if (*vpp) {
        _TIFFfree(*vpp);
        *vpp = 0;
    }
    if (vp) {
        tmsize_t bytes = _TIFFMultiplySSize(NULL, nmemb, elem_size, NULL);
        if (bytes)
            *vpp = (void*) _TIFFmalloc(bytes);
        if (*vpp)
            _TIFFmemcpy(*vpp, vp, bytes);
    }
}

Referenced by _TIFFsetByteArray(), _TIFFsetDoubleArray(), _TIFFsetFloatArray(), _TIFFsetLong8Array(), _TIFFsetLongArray(), _TIFFsetNString(), _TIFFsetShortArray(), _TIFFsetString(), and _TIFFVSetField().

setDoubleArrayOneValue()

static void setDoubleArrayOneValue ( double **  vpp, double  value, size_t  nmemb  )

static

Definition at line 75 of file tif_dir.c.

{
    if (*vpp)
        _TIFFfree(*vpp);
    *vpp = _TIFFmalloc(nmemb*sizeof(double));
    if (*vpp)
    {
        while (nmemb--)
            ((double*)*vpp)[nmemb] = value;
    }
}

Referenced by _TIFFVSetField().

setExtraSamples()

static int setExtraSamples ( TIFF *  tif, va_list  ap, uint32 *  v  )

static

Definition at line 91 of file tif_dir.c.

{
/* XXX: Unassociated alpha data == 999 is a known Corel Draw bug, see below */
#define EXTRASAMPLE_COREL_UNASSALPHA 999 
 
    uint16* va;
    uint32 i;
        TIFFDirectory* td = &tif->tif_dir;
        static const char module[] = "setExtraSamples";
 
    *v = (uint16) va_arg(ap, uint16_vap);
    if ((uint16) *v > td->td_samplesperpixel)
        return 0;
    va = va_arg(ap, uint16*);
    if (*v > 0 && va == NULL)       /* typically missing param */
        return 0;
    for (i = 0; i < *v; i++) {
        if (va[i] > EXTRASAMPLE_UNASSALPHA) {
            /*
             * XXX: Corel Draw is known to produce incorrect
             * ExtraSamples tags which must be patched here if we
             * want to be able to open some of the damaged TIFF
             * files: 
             */
            if (va[i] == EXTRASAMPLE_COREL_UNASSALPHA)
                va[i] = EXTRASAMPLE_UNASSALPHA;
            else
                return 0;
        }
    }
 
        if ( td->td_transferfunction[0] != NULL && (td->td_samplesperpixel - *v > 1) &&
                !(td->td_samplesperpixel - td->td_extrasamples > 1))
        {
                TIFFWarningExt(tif->tif_clientdata,module,
                    "ExtraSamples tag value is changing, "
                    "but TransferFunction was read with a different value. Cancelling it");
                TIFFClrFieldBit(tif,FIELD_TRANSFERFUNCTION);
                _TIFFfree(td->td_transferfunction[0]);
                td->td_transferfunction[0] = NULL;
        }
 
    td->td_extrasamples = (uint16) *v;
    _TIFFsetShortArray(&td->td_sampleinfo, va, td->td_extrasamples);
    return 1;
 
#undef EXTRASAMPLE_COREL_UNASSALPHA
}

Referenced by _TIFFVSetField().

TIFFAdvanceDirectory()

static int TIFFAdvanceDirectory ( TIFF *  tif, uint64 *  nextdir, uint64 *  off  )

static

Definition at line 1444 of file tif_dir.c.

{
    static const char module[] = "TIFFAdvanceDirectory";
    if (isMapped(tif))
    {
        uint64 poff=*nextdir;
        if (!(tif->tif_flags&TIFF_BIGTIFF))
        {
            tmsize_t poffa,poffb,poffc,poffd;
            uint16 dircount;
            uint32 nextdir32;
            poffa=(tmsize_t)poff;
            poffb=poffa+sizeof(uint16);
            if (((uint64)poffa!=poff)||(poffb<poffa)||(poffb<(tmsize_t)sizeof(uint16))||(poffb>tif->tif_size))
            {
                TIFFErrorExt(tif->tif_clientdata,module,"Error fetching directory count");
                                  *nextdir=0;
                return(0);
            }
            _TIFFmemcpy(&dircount,tif->tif_base+poffa,sizeof(uint16));
            if (tif->tif_flags&TIFF_SWAB)
                TIFFSwabShort(&dircount);
            poffc=poffb+dircount*12;
            poffd=poffc+sizeof(uint32);
            if ((poffc<poffb)||(poffc<dircount*12)||(poffd<poffc)||(poffd<(tmsize_t)sizeof(uint32))||(poffd>tif->tif_size))
            {
                TIFFErrorExt(tif->tif_clientdata,module,"Error fetching directory link");
                return(0);
            }
            if (off!=NULL)
                *off=(uint64)poffc;
            _TIFFmemcpy(&nextdir32,tif->tif_base+poffc,sizeof(uint32));
            if (tif->tif_flags&TIFF_SWAB)
                TIFFSwabLong(&nextdir32);
            *nextdir=nextdir32;
        }
        else
        {
            tmsize_t poffa,poffb,poffc,poffd;
            uint64 dircount64;
            uint16 dircount16;
            poffa=(tmsize_t)poff;
            poffb=poffa+sizeof(uint64);
            if (((uint64)poffa!=poff)||(poffb<poffa)||(poffb<(tmsize_t)sizeof(uint64))||(poffb>tif->tif_size))
            {
                TIFFErrorExt(tif->tif_clientdata,module,"Error fetching directory count");
                return(0);
            }
            _TIFFmemcpy(&dircount64,tif->tif_base+poffa,sizeof(uint64));
            if (tif->tif_flags&TIFF_SWAB)
                TIFFSwabLong8(&dircount64);
            if (dircount64>0xFFFF)
            {
                TIFFErrorExt(tif->tif_clientdata,module,"Sanity check on directory count failed");
                return(0);
            }
            dircount16=(uint16)dircount64;
            poffc=poffb+dircount16*20;
            poffd=poffc+sizeof(uint64);
            if ((poffc<poffb)||(poffc<dircount16*20)||(poffd<poffc)||(poffd<(tmsize_t)sizeof(uint64))||(poffd>tif->tif_size))
            {
                TIFFErrorExt(tif->tif_clientdata,module,"Error fetching directory link");
                return(0);
            }
            if (off!=NULL)
                *off=(uint64)poffc;
            _TIFFmemcpy(nextdir,tif->tif_base+poffc,sizeof(uint64));
            if (tif->tif_flags&TIFF_SWAB)
                TIFFSwabLong8(nextdir);
        }
        return(1);
    }
    else
    {
        if (!(tif->tif_flags&TIFF_BIGTIFF))
        {
            uint16 dircount;
            uint32 nextdir32;
            if (!SeekOK(tif, *nextdir) ||
                !ReadOK(tif, &dircount, sizeof (uint16))) {
                TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory count",
                    tif->tif_name);
                return (0);
            }
            if (tif->tif_flags & TIFF_SWAB)
                TIFFSwabShort(&dircount);
            if (off != NULL)
                *off = TIFFSeekFile(tif,
                    dircount*12, SEEK_CUR);
            else
                (void) TIFFSeekFile(tif,
                    dircount*12, SEEK_CUR);
            if (!ReadOK(tif, &nextdir32, sizeof (uint32))) {
                TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory link",
                    tif->tif_name);
                return (0);
            }
            if (tif->tif_flags & TIFF_SWAB)
                TIFFSwabLong(&nextdir32);
            *nextdir=nextdir32;
        }
        else
        {
            uint64 dircount64;
            uint16 dircount16;
            if (!SeekOK(tif, *nextdir) ||
                !ReadOK(tif, &dircount64, sizeof (uint64))) {
                TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory count",
                    tif->tif_name);
                return (0);
            }
            if (tif->tif_flags & TIFF_SWAB)
                TIFFSwabLong8(&dircount64);
            if (dircount64>0xFFFF)
            {
                TIFFErrorExt(tif->tif_clientdata, module, "Error fetching directory count");
                return(0);
            }
            dircount16 = (uint16)dircount64;
            if (off != NULL)
                *off = TIFFSeekFile(tif,
                    dircount16*20, SEEK_CUR);
            else
                (void) TIFFSeekFile(tif,
                    dircount16*20, SEEK_CUR);
            if (!ReadOK(tif, nextdir, sizeof (uint64))) {
                TIFFErrorExt(tif->tif_clientdata, module,
                                             "%s: Error fetching directory link",
                    tif->tif_name);
                return (0);
            }
            if (tif->tif_flags & TIFF_SWAB)
                TIFFSwabLong8(nextdir);
        }
        return (1);
    }
}

Referenced by TIFFNumberOfDirectories(), TIFFSetDirectory(), and TIFFUnlinkDirectory().

TIFFCreateCustomDirectory()

int TIFFCreateCustomDirectory	(	TIFF *	tif,
		const TIFFFieldArray *	infoarray
	)

Definition at line 1340 of file tif_dir.c.

{
    TIFFDefaultDirectory(tif);
 
    /*
     * Reset the field definitions to match the application provided list. 
     * Hopefully TIFFDefaultDirectory() won't have done anything irreversable
     * based on it's assumption this is an image directory.
     */
    _TIFFSetupFields(tif, infoarray);
 
    tif->tif_diroff = 0;
    tif->tif_nextdiroff = 0;
    tif->tif_curoff = 0;
    tif->tif_row = (uint32) -1;
    tif->tif_curstrip = (uint32) -1;
 
    return 0;
}

Referenced by TIFFCreateEXIFDirectory().

TIFFCreateDirectory()

int TIFFCreateDirectory

(

TIFF *

tif

)

Definition at line 1327 of file tif_dir.c.

{
    TIFFDefaultDirectory(tif);
    tif->tif_diroff = 0;
    tif->tif_nextdiroff = 0;
    tif->tif_curoff = 0;
    tif->tif_row = (uint32) -1;
    tif->tif_curstrip = (uint32) -1;
 
    return 0;
}

Referenced by TIFFWriteDirectorySec().

TIFFCreateEXIFDirectory()

int TIFFCreateEXIFDirectory

(

TIFF *

tif

)

Definition at line 1361 of file tif_dir.c.

{
    const TIFFFieldArray* exifFieldArray;
    exifFieldArray = _TIFFGetExifFields();
    return TIFFCreateCustomDirectory(tif, exifFieldArray);
}

TIFFCurrentDirOffset()

uint64 TIFFCurrentDirOffset

(

TIFF *

tif

)

Definition at line 1666 of file tif_dir.c.

{
    return (tif->tif_diroff);
}

Referenced by tiff_decoder_get_metadata_blocks().

TIFFDefaultDirectory()

int TIFFDefaultDirectory

(

TIFF *

tif

)

Definition at line 1372 of file tif_dir.c.

{
    register TIFFDirectory* td = &tif->tif_dir;
    const TIFFFieldArray* tiffFieldArray;
 
    tiffFieldArray = _TIFFGetFields();
    _TIFFSetupFields(tif, tiffFieldArray);   
 
    _TIFFmemset(td, 0, sizeof (*td));
    td->td_fillorder = FILLORDER_MSB2LSB;
    td->td_bitspersample = 1;
    td->td_threshholding = THRESHHOLD_BILEVEL;
    td->td_orientation = ORIENTATION_TOPLEFT;
    td->td_samplesperpixel = 1;
    td->td_rowsperstrip = (uint32) -1;
    td->td_tilewidth = 0;
    td->td_tilelength = 0;
    td->td_tiledepth = 1;
#ifdef STRIPBYTECOUNTSORTED_UNUSED
    td->td_stripbytecountsorted = 1; /* Our own arrays always sorted. */  
#endif
    td->td_resolutionunit = RESUNIT_INCH;
    td->td_sampleformat = SAMPLEFORMAT_UINT;
    td->td_imagedepth = 1;
    td->td_ycbcrsubsampling[0] = 2;
    td->td_ycbcrsubsampling[1] = 2;
    td->td_ycbcrpositioning = YCBCRPOSITION_CENTERED;
    tif->tif_postdecode = _TIFFNoPostDecode;  
    tif->tif_foundfield = NULL;
    tif->tif_tagmethods.vsetfield = _TIFFVSetField;  
    tif->tif_tagmethods.vgetfield = _TIFFVGetField;
    tif->tif_tagmethods.printdir = NULL;
    /*
     *  Give client code a chance to install their own
     *  tag extensions & methods, prior to compression overloads,
     *  but do some prior cleanup first. (http://trac.osgeo.org/gdal/ticket/5054)
     */
    if (tif->tif_nfieldscompat > 0) {
        uint32 i;
 
        for (i = 0; i < tif->tif_nfieldscompat; i++) {
                if (tif->tif_fieldscompat[i].allocated_size)
                        _TIFFfree(tif->tif_fieldscompat[i].fields);
        }
        _TIFFfree(tif->tif_fieldscompat);
        tif->tif_nfieldscompat = 0;
        tif->tif_fieldscompat = NULL;
    }
    if (_TIFFextender)
        (*_TIFFextender)(tif);
    (void) TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
    /*
     * NB: The directory is marked dirty as a result of setting
     * up the default compression scheme.  However, this really
     * isn't correct -- we want TIFF_DIRTYDIRECT to be set only
     * if the user does something.  We could just do the setup
     * by hand, but it seems better to use the normal mechanism
     * (i.e. TIFFSetField).
     */
    tif->tif_flags &= ~TIFF_DIRTYDIRECT;
 
    /*
     * As per http://bugzilla.remotesensing.org/show_bug.cgi?id=19
     * we clear the ISTILED flag when setting up a new directory.
     * Should we also be clearing stuff like INSUBIFD?
     */
    tif->tif_flags &= ~TIFF_ISTILED;
 
    return (1);
}

Referenced by TIFFClientOpen(), TIFFCreateCustomDirectory(), TIFFCreateDirectory(), TIFFReadDirectory(), and TIFFUnlinkDirectory().

TIFFFreeDirectory()

void TIFFFreeDirectory

(

TIFF *

tif

)

Definition at line 1268 of file tif_dir.c.

{
    TIFFDirectory *td = &tif->tif_dir;
    int            i;
 
    _TIFFmemset(td->td_fieldsset, 0, FIELD_SETLONGS);
    CleanupField(td_sminsamplevalue);
    CleanupField(td_smaxsamplevalue);
    CleanupField(td_colormap[0]);
    CleanupField(td_colormap[1]);
    CleanupField(td_colormap[2]);
    CleanupField(td_sampleinfo);
    CleanupField(td_subifd);
    CleanupField(td_inknames);
    CleanupField(td_refblackwhite);
    CleanupField(td_transferfunction[0]);
    CleanupField(td_transferfunction[1]);
    CleanupField(td_transferfunction[2]);
    CleanupField(td_stripoffset_p);
    CleanupField(td_stripbytecount_p);
        td->td_stripoffsetbyteallocsize = 0;
    TIFFClrFieldBit(tif, FIELD_YCBCRSUBSAMPLING);
    TIFFClrFieldBit(tif, FIELD_YCBCRPOSITIONING);
 
    /* Cleanup custom tag values */
    for( i = 0; i < td->td_customValueCount; i++ ) {
        if (td->td_customValues[i].value)
            _TIFFfree(td->td_customValues[i].value);
    }
 
    td->td_customValueCount = 0;
    CleanupField(td_customValues);
 
        _TIFFmemset( &(td->td_stripoffset_entry), 0, sizeof(TIFFDirEntry));
        _TIFFmemset( &(td->td_stripbytecount_entry), 0, sizeof(TIFFDirEntry));
}

Referenced by TIFFCleanup(), TIFFReadCustomDirectory(), TIFFReadDirectory(), TIFFUnlinkDirectory(), and TIFFWriteDirectorySec().

TIFFGetField()

int TIFFGetField	(	TIFF *	tif,
		uint32	tag,
			...
	)

Definition at line 1232 of file tif_dir.c.

{
    int status;
    va_list ap;
 
    va_start(ap, tag);
    status = TIFFVGetField(tif, tag, ap);
    va_end(ap);
    return (status);
}

Referenced by gtTileContig(), gtTileSeparate(), isCCITTCompression(), tiff_decoder_get_color_context(), tiff_get_decode_info(), TIFFPrintDirectory(), TIFFRGBAImageBegin(), TIFFRGBAImageOK(), and TIFFWriteDirectorySec().

TIFFLastDirectory()

int TIFFLastDirectory

(

TIFF *

tif

)

Definition at line 1676 of file tif_dir.c.

{
    return (tif->tif_nextdiroff == 0);
}

TIFFNumberOfDirectories()

uint16 TIFFNumberOfDirectories

(

TIFF *

tif

)

Definition at line 1586 of file tif_dir.c.

{
    static const char module[] = "TIFFNumberOfDirectories";
    uint64 nextdir;
    uint16 n;
    if (!(tif->tif_flags&TIFF_BIGTIFF))
        nextdir = tif->tif_header.classic.tiff_diroff;
    else
        nextdir = tif->tif_header.big.tiff_diroff;
    n = 0;
    while (nextdir != 0 && TIFFAdvanceDirectory(tif, &nextdir, NULL))
        {
                if (n != 65535) {
                        ++n;
                }
        else
                {
                        TIFFErrorExt(tif->tif_clientdata, module,
                                     "Directory count exceeded 65535 limit,"
                                     " giving up on counting.");
                        return (65535);
                }
        }
    return (n);
}

Referenced by tiff_decoder_initialize().

TIFFSetDirectory()

int TIFFSetDirectory	(	TIFF *	tif,
		uint16	dirn
	)

Definition at line 1617 of file tif_dir.c.

{
    uint64 nextdir;
    uint16 n;
 
    if (!(tif->tif_flags&TIFF_BIGTIFF))
        nextdir = tif->tif_header.classic.tiff_diroff;
    else
        nextdir = tif->tif_header.big.tiff_diroff;
    for (n = dirn; n > 0 && nextdir != 0; n--)
        if (!TIFFAdvanceDirectory(tif, &nextdir, NULL))
            return (0);
    tif->tif_nextdiroff = nextdir;
    /*
     * Set curdir to the actual directory index.  The
     * -1 is because TIFFReadDirectory will increment
     * tif_curdir after successfully reading the directory.
     */
    tif->tif_curdir = (dirn - n) - 1;
    /*
     * Reset tif_dirnumber counter and start new list of seen directories.
     * We need this to prevent IFD loops.
     */
    tif->tif_dirnumber = 0;
    return (TIFFReadDirectory(tif));
}

Referenced by tiff_decoder_select_frame().

TIFFSetField()

int TIFFSetField	(	TIFF *	tif,
		uint32	tag,
			...
	)

Definition at line 807 of file tif_dir.c.

{
    va_list ap;
    int status;
 
    va_start(ap, tag);
    status = TIFFVSetField(tif, tag, ap);
    va_end(ap);
    return (status);
}

Referenced by allocChoppedUpStripArrays(), tiff_encoder_create_frame(), TIFFDefaultDirectory(), TIFFFetchNormalTag(), TIFFFetchSubjectDistance(), TIFFReadDirectory(), and TIFFRGBAImageBegin().

TIFFSetSubDirectory()

int TIFFSetSubDirectory	(	TIFF *	tif,
		uint64	diroff
	)

Definition at line 1651 of file tif_dir.c.

{
    tif->tif_nextdiroff = diroff;
    /*
     * Reset tif_dirnumber counter and start new list of seen directories.
     * We need this to prevent IFD loops.
     */
    tif->tif_dirnumber = 0;
    return (TIFFReadDirectory(tif));
}

TIFFSetTagExtender()

TIFFExtendProc TIFFSetTagExtender

(

TIFFExtendProc

extender

)

Definition at line 1312 of file tif_dir.c.

{
    TIFFExtendProc prev = _TIFFextender;
    _TIFFextender = extender;
    return (prev);
}

TIFFUnlinkDirectory()

int TIFFUnlinkDirectory	(	TIFF *	tif,
		uint16	dirn
	)

Definition at line 1685 of file tif_dir.c.

{
    static const char module[] = "TIFFUnlinkDirectory";
    uint64 nextdir;
    uint64 off;
    uint16 n;
 
    if (tif->tif_mode == O_RDONLY) {
        TIFFErrorExt(tif->tif_clientdata, module,
                             "Can not unlink directory in read-only file");
        return (0);
    }
    /*
     * Go to the directory before the one we want
     * to unlink and nab the offset of the link
     * field we'll need to patch.
     */
    if (!(tif->tif_flags&TIFF_BIGTIFF))
    {
        nextdir = tif->tif_header.classic.tiff_diroff;
        off = 4;
    }
    else
    {
        nextdir = tif->tif_header.big.tiff_diroff;
        off = 8;
    }
    for (n = dirn-1; n > 0; n--) {
        if (nextdir == 0) {
            TIFFErrorExt(tif->tif_clientdata, module, "Directory %d does not exist", dirn);
            return (0);
        }
        if (!TIFFAdvanceDirectory(tif, &nextdir, &off))
            return (0);
    }
    /*
     * Advance to the directory to be unlinked and fetch
     * the offset of the directory that follows.
     */
    if (!TIFFAdvanceDirectory(tif, &nextdir, NULL))
        return (0);
    /*
     * Go back and patch the link field of the preceding
     * directory to point to the offset of the directory
     * that follows.
     */
    (void) TIFFSeekFile(tif, off, SEEK_SET);
    if (!(tif->tif_flags&TIFF_BIGTIFF))
    {
        uint32 nextdir32;
        nextdir32=(uint32)nextdir;
        assert((uint64)nextdir32==nextdir);
        if (tif->tif_flags & TIFF_SWAB)
            TIFFSwabLong(&nextdir32);
        if (!WriteOK(tif, &nextdir32, sizeof (uint32))) {
            TIFFErrorExt(tif->tif_clientdata, module, "Error writing directory link");
            return (0);
        }
    }
    else
    {
        if (tif->tif_flags & TIFF_SWAB)
            TIFFSwabLong8(&nextdir);
        if (!WriteOK(tif, &nextdir, sizeof (uint64))) {
            TIFFErrorExt(tif->tif_clientdata, module, "Error writing directory link");
            return (0);
        }
    }
    /*
     * Leave directory state setup safely.  We don't have
     * facilities for doing inserting and removing directories,
     * so it's safest to just invalidate everything.  This
     * means that the caller can only append to the directory
     * chain.
     */
    (*tif->tif_cleanup)(tif);
    if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) {
        _TIFFfree(tif->tif_rawdata);
        tif->tif_rawdata = NULL;
        tif->tif_rawcc = 0;
                tif->tif_rawdataoff = 0;
                tif->tif_rawdataloaded = 0;
    }
    tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP|TIFF_POSTENCODE|TIFF_BUF4WRITE);
    TIFFFreeDirectory(tif);
    TIFFDefaultDirectory(tif);
    tif->tif_diroff = 0;            /* force link on next write */
    tif->tif_nextdiroff = 0;        /* next write must be at end */
    tif->tif_curoff = 0;
    tif->tif_row = (uint32) -1;
    tif->tif_curstrip = (uint32) -1;
    return (1);
}

TIFFUnsetField()

int TIFFUnsetField	(	TIFF *	tif,
		uint32	tag
	)

Definition at line 822 of file tif_dir.c.

{
    const TIFFField *fip =  TIFFFieldWithTag(tif, tag);
    TIFFDirectory* td = &tif->tif_dir;
 
    if( !fip )
        return 0;
 
    if( fip->field_bit != FIELD_CUSTOM )
        TIFFClrFieldBit(tif, fip->field_bit);
    else
    {
        TIFFTagValue *tv = NULL;
        int i;
 
        for (i = 0; i < td->td_customValueCount; i++) {
                
            tv = td->td_customValues + i;
            if( tv->info->field_tag == tag )
                break;
        }
 
        if( i < td->td_customValueCount )
        {
            _TIFFfree(tv->value);
            for( ; i < td->td_customValueCount-1; i++) {
                td->td_customValues[i] = td->td_customValues[i+1];
            }
            td->td_customValueCount--;
        }
    }
        
    tif->tif_flags |= TIFF_DIRTYDIRECT;
 
    return (1);
}

TIFFVGetField()

int TIFFVGetField	(	TIFF *	tif,
		uint32	tag,
		va_list	ap
	)

Definition at line 1250 of file tif_dir.c.

{
    const TIFFField* fip = TIFFFindField(tif, tag, TIFF_ANY);
    return (fip && (isPseudoTag(tag) || TIFFFieldSet(tif, fip->field_bit)) ?
        (*tif->tif_tagmethods.vgetfield)(tif, tag, ap) : 0);
}

Referenced by TIFFGetField(), and TIFFVGetFieldDefaulted().

TIFFVSetField()

int TIFFVSetField	(	TIFF *	tif,
		uint32	tag,
		va_list	ap
	)

Definition at line 866 of file tif_dir.c.

{
    return OkToChangeTag(tif, tag) ?
        (*tif->tif_tagmethods.vsetfield)(tif, tag, ap) : 0;
}

Referenced by TIFFSetField().

Variable Documentation

_TIFFextender

TIFFExtendProc _TIFFextender = (TIFFExtendProc) NULL

static

Definition at line 1309 of file tif_dir.c.

Referenced by TIFFDefaultDirectory(), and TIFFSetTagExtender().