static int JBIGVSetField(TIFF* tif, ttag_t tag, va_list ap)
{
JBIGState* codec = GetJBIGState(tif);
switch (tag)
{
case TIFFTAG_FAXRECVPARAMS:
codec->recvparams = va_arg(ap, uint32);
break;
case TIFFTAG_FAXSUBADDRESS:
_TIFFsetString(&codec->subaddress, va_arg(ap, char*));
break;
case TIFFTAG_FAXRECVTIME:
codec->recvtime = va_arg(ap, uint32);
break;
case TIFFTAG_FAXDCS:
_TIFFsetString(&codec->faxdcs, va_arg(ap, char*));
break;
default:
return (*codec->vsetparent)(tif, tag, ap);
}
TIFFSetFieldBit(tif, _TIFFFieldWithTag(tif, tag)->field_bit);
tif->tif_flags |= TIFF_DIRTYDIRECT;
return 1;
}
/*
* Setup a directory entry of an array of RATIONAL
* or SRATIONAL and write the associated indirect values.
*/
static int
TIFFWriteRationalArray(TIFF* tif,
TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, float* v)
{
uint32 i;
uint32* t;
int status;
dir->tdir_tag = tag;
dir->tdir_type = (short) type;
dir->tdir_count = n;
t = (uint32*) _TIFFmalloc(2*n * sizeof (uint32));
#if defined(__INTEL_COMPILER) && 1 /* VDM auto patch */
# pragma ivdep
# pragma swp
# pragma unroll
# pragma prefetch
# if 0
# pragma simd noassert
# endif
#endif /* VDM auto patch */
for (i = 0; i < n; i++) {
float fv = v[i];
int sign = 1;
uint32 den;
if (fv < 0) {
if (type == TIFF_RATIONAL) {
TIFFWarning(tif->tif_name,
"\"%s\": Information lost writing value (%g) as (unsigned) RATIONAL",
_TIFFFieldWithTag(tif,tag)->field_name, v);
fv = 0;
} else
fv = -fv, sign = -1;
}
den = 1L;
if (fv > 0) {
#if defined(__INTEL_COMPILER) && 1 /* VDM auto patch */
# pragma ivdep
# pragma swp
# pragma unroll
# pragma prefetch
# if 0
# pragma simd noassert
# endif
#endif /* VDM auto patch */
while (fv < 1L<<(31-3) && den < 1L<<(31-3))
fv *= 1<<3, den *= 1L<<3;
}
t[2*i+0] = sign * (fv + 0.5);
t[2*i+1] = den;
}
status = TIFFWriteData(tif, dir, (char *)t);
_TIFFfree((char*) t);
return (status);
}
/*
* Check the count field of a directory
* entry against a known value. The caller
* is expected to skip/ignore the tag if
* there is a mismatch.
*/
static int
CheckDirCount(TIFF* tif, TIFFDirEntry* dir, uint32 count)
{
if (count != dir->tdir_count) {
TIFFWarning(tif->tif_name,
"incorrect count for field \"%s\" (%lu, expecting %lu); tag ignored",
_TIFFFieldWithTag(tif, dir->tdir_tag)->field_name,
dir->tdir_count, count);
return (0);
}
return (1);
}
/*
* Convert numerator+denominator to float.
*/
static int
cvtRational(TIFF* tif, TIFFDirEntry* dir, uint32 num, uint32 denom, float* rv)
{
if (denom == 0) {
TIFFError(tif->tif_name,
"%s: Rational with zero denominator (num = %lu)",
_TIFFFieldWithTag(tif, dir->tdir_tag)->field_name, num);
return (0);
} else {
if (dir->tdir_type == TIFF_RATIONAL)
*rv = ((float)num / (float)denom);
else
*rv = ((float)(int32)num / (float)(int32)denom);
return (1);
}
}
/*
* Setup a directory entry of an array of RATIONAL
* or SRATIONAL and write the associated indirect values.
*/
static int
TIFFWriteRationalArray(TIFF* tif,
TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, float* v)
{
uint32 i;
uint32* t;
int status;
dir->tdir_tag = (uint16) tag;
dir->tdir_type = (short) type;
dir->tdir_count = n;
t = (uint32*) _TIFFmalloc(2*n * sizeof (uint32));
if (t == NULL) {
TIFFError(tif->tif_name,
"No space to write RATIONAL array");
return (0);
}
for (i = 0; i < n; i++) {
float fv = v[i];
int sign = 1;
uint32 den;
if (fv < 0) {
if (type == TIFF_RATIONAL) {
TIFFWarning(tif->tif_name,
"\"%s\": Information lost writing value (%g) as (unsigned) RATIONAL",
_TIFFFieldWithTag(tif,tag)->field_name, fv);
fv = 0;
} else
fv = -fv, sign = -1;
}
den = 1L;
if (fv > 0) {
while (fv < 1L<<(31-3) && den < 1L<<(31-3))
fv *= 1<<3, den *= 1L<<3;
}
t[2*i+0] = (uint32) (sign * (fv + 0.5));
t[2*i+1] = den;
}
status = TIFFWriteData(tif, dir, (char *)t);
_TIFFfree((char*) t);
return (status);
}
/*
* Write a contiguous directory item.
*/
static int
TIFFWriteData(TIFF* tif, TIFFDirEntry* dir, char* cp)
{
tsize_t cc;
if (tif->tif_flags & TIFF_SWAB) {
switch (dir->s.tdir_type) {
case TIFF_SHORT:
case TIFF_SSHORT:
TIFFSwabArrayOfShort((uint16*) cp, TDIRGetEntryCount(tif,dir));
break;
case TIFF_LONG:
case TIFF_SLONG:
case TIFF_IFD:
case TIFF_FLOAT:
TIFFSwabArrayOfLong((uint32*) cp, TDIRGetEntryCount(tif,dir));
break;
case TIFF_LONG8:
case TIFF_SLONG8:
case TIFF_IFD8:
TIFFSwabArrayOfLong8((uint64*) cp, TDIRGetEntryCount(tif,dir));
break;
case TIFF_RATIONAL:
case TIFF_SRATIONAL:
TIFFSwabArrayOfLong((uint32*) cp, 2 * TDIRGetEntryCount(tif,dir));
break;
case TIFF_DOUBLE:
TIFFSwabArrayOfDouble((double*) cp, TDIRGetEntryCount(tif,dir));
break;
}
}
TDIRSetEntryOff(tif,dir,tif->tif_dataoff);
cc = TDIRGetEntryCount(tif,dir) * TIFFDataWidth((TIFFDataType) dir->s.tdir_type);
if (SeekOK(tif, tif->tif_dataoff) &&
WriteOK(tif, cp, cc)) {
tif->tif_dataoff += ((cc + 1) & ~1);
return (1);
}
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing data for field \"%s\" (%d)",
_TIFFFieldWithTag(tif, dir->s.tdir_tag)->field_name, TIFFGetErrno(tif));
return (0);
}
/*
* Fetch a contiguous directory item.
*/
static tsize_t
TIFFFetchData(TIFF* tif, TIFFDirEntry* dir, char* cp)
{
int w = tiffDataWidth[dir->tdir_type];
tsize_t cc = dir->tdir_count * w;
if (!isMapped(tif)) {
if (!SeekOK(tif, dir->tdir_offset))
goto bad;
if (!ReadOK(tif, cp, cc))
goto bad;
} else {
if (dir->tdir_offset + cc > tif->tif_size)
goto bad;
_TIFFmemcpy(cp, tif->tif_base + dir->tdir_offset, cc);
}
if (tif->tif_flags & TIFF_SWAB) {
switch (dir->tdir_type) {
case TIFF_SHORT:
case TIFF_SSHORT:
TIFFSwabArrayOfShort((uint16*) cp, dir->tdir_count);
break;
case TIFF_LONG:
case TIFF_SLONG:
case TIFF_FLOAT:
TIFFSwabArrayOfLong((uint32*) cp, dir->tdir_count);
break;
case TIFF_RATIONAL:
case TIFF_SRATIONAL:
TIFFSwabArrayOfLong((uint32*) cp, 2*dir->tdir_count);
break;
case TIFF_DOUBLE:
TIFFSwabArrayOfDouble((double*) cp, dir->tdir_count);
break;
}
}
return (cc);
bad:
TIFFError(tif->tif_name, "Error fetching data for field \"%s\"",
_TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
return ((tsize_t) 0);
}
/*
* Write a contiguous directory item.
*/
static int
TIFFWriteData(TIFF* tif, TIFFDirEntry* dir, char* cp)
{
tsize_t cc;
if (tif->tif_flags & TIFF_SWAB) {
switch (dir->tdir_type) {
case TIFF_SHORT:
case TIFF_SSHORT:
TIFFSwabArrayOfShort((uint16*) cp, dir->tdir_count);
break;
case TIFF_LONG:
case TIFF_SLONG:
case TIFF_FLOAT:
TIFFSwabArrayOfLong((uint32*) cp, dir->tdir_count);
break;
case TIFF_RATIONAL:
case TIFF_SRATIONAL:
TIFFSwabArrayOfLong((uint32*) cp, 2*dir->tdir_count);
break;
case TIFF_DOUBLE:
TIFFSwabArrayOfDouble((double*) cp, dir->tdir_count);
break;
}
}
dir->tdir_offset = tif->tif_dataoff;
cc = dir->tdir_count * TIFFDataWidth((TIFFDataType) dir->tdir_type);
if (SeekOK(tif, dir->tdir_offset) &&
WriteOK(tif, cp, cc)) {
tif->tif_dataoff += (cc + 1) & ~1;
return (1);
}
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Error writing data for field \"%s\"",
_TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
return (0);
}
static int
_XTIFFVSetField(TIFF* tif, ttag_t tag, va_list ap)
{
xtiff *xt = XTIFFDIR(tif);
XTIFFDirectory* xd = &xt->xtif_dir;
int status = 1;
uint32 v32=0;
int i=0, v=0;
va_list ap1 = ap;
/* va_start is called by the calling routine */
switch (tag) {
/*
* XXX put your extended tags here; replace the implemented
* example tags with your own.
*/
case TIFFTAG_EXAMPLE_MULTI:
/* multi-valued tags need to store the count as well */
xd->xd_num_multi = (uint16) va_arg(ap, int);
_TIFFsetDoubleArray(&xd->xd_example_multi, va_arg(ap, double*),
(long) xd->xd_num_multi);
break;
case TIFFTAG_EXAMPLE_SINGLE:
xd->xd_example_single = va_arg(ap, uint32);
break;
case TIFFTAG_EXAMPLE_ASCII:
_TIFFsetString(&xd->xd_example_ascii, va_arg(ap, char*));
break;
default:
/* call the inherited method */
return (PARENT(xt,vsetfield))(tif,tag,ap);
break;
}
if (status) {
/* we have to override the print method here,
* after the compression tags have gotten to it.
* This makes sense because the only time we would
* need the extended print method is if an extended
* tag is set by the reader.
*/
if (!(xt->xtif_flags & XTIFFP_PRINT))
{
PARENT(xt,printdir) = TIFFMEMBER(tif,printdir);
TIFFMEMBER(tif,printdir) = _XTIFFPrintDirectory;
xt->xtif_flags |= XTIFFP_PRINT;
}
TIFFSetFieldBit(tif, _TIFFFieldWithTag(tif, tag)->field_bit);
tif->tif_flags |= TIFF_DIRTYDIRECT;
}
va_end(ap);
return (status);
badvalue:
TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "%d: Bad value for \"%s\"", v,
_TIFFFieldWithTag(tif, tag)->field_name);
va_end(ap);
return (0);
badvalue32:
TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "%ld: Bad value for \"%s\"", v32,
_TIFFFieldWithTag(tif, tag)->field_name);
va_end(ap);
return (0);
}
static int
_TIFFVSetField(TIFF* tif, ttag_t tag, va_list ap)
{
static const char module[] = "_TIFFVSetField";
TIFFDirectory* td = &tif->tif_dir;
int status = 1;
uint32 v32;
int i, v;
double d;
char* s;
switch (tag) {
case TIFFTAG_SUBFILETYPE:
td->td_subfiletype = va_arg(ap, uint32);
break;
case TIFFTAG_IMAGEWIDTH:
td->td_imagewidth = va_arg(ap, uint32);
break;
case TIFFTAG_IMAGELENGTH:
td->td_imagelength = va_arg(ap, uint32);
break;
case TIFFTAG_BITSPERSAMPLE:
td->td_bitspersample = (uint16) va_arg(ap, int);
/*
* 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 == 16)
tif->tif_postdecode = _TIFFSwab16BitData;
else if (td->td_bitspersample == 32)
tif->tif_postdecode = _TIFFSwab32BitData;
else if (td->td_bitspersample == 64)
tif->tif_postdecode = _TIFFSwab64BitData;
}
break;
case TIFFTAG_COMPRESSION:
v = va_arg(ap, int) & 0xffff;
/*
* 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 (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, int);
break;
case TIFFTAG_THRESHHOLDING:
td->td_threshholding = (uint16) va_arg(ap, int);
break;
case TIFFTAG_FILLORDER:
v = va_arg(ap, int);
if (v != FILLORDER_LSB2MSB && v != FILLORDER_MSB2LSB)
goto badvalue;
td->td_fillorder = (uint16) v;
break;
case TIFFTAG_DOCUMENTNAME:
_TIFFsetString(&td->td_documentname, va_arg(ap, char*));
break;
case TIFFTAG_ARTIST:
_TIFFsetString(&td->td_artist, va_arg(ap, char*));
break;
case TIFFTAG_DATETIME:
_TIFFsetString(&td->td_datetime, va_arg(ap, char*));
break;
case TIFFTAG_HOSTCOMPUTER:
_TIFFsetString(&td->td_hostcomputer, va_arg(ap, char*));
break;
case TIFFTAG_IMAGEDESCRIPTION:
_TIFFsetString(&td->td_imagedescription, va_arg(ap, char*));
break;
case TIFFTAG_MAKE:
_TIFFsetString(&td->td_make, va_arg(ap, char*));
break;
case TIFFTAG_MODEL:
_TIFFsetString(&td->td_model, va_arg(ap, char*));
break;
case TIFFTAG_COPYRIGHT:
_TIFFsetString(&td->td_copyright, va_arg(ap, char*));
break;
case TIFFTAG_ORIENTATION:
v = va_arg(ap, int);
if (v < ORIENTATION_TOPLEFT || ORIENTATION_LEFTBOT < v) {
TIFFWarning(tif->tif_name,
"Bad value %ld for \"%s\" tag ignored",
v, _TIFFFieldWithTag(tif, tag)->field_name);
} else
td->td_orientation = (uint16) v;
break;
case TIFFTAG_SAMPLESPERPIXEL:
/* XXX should cross check -- e.g. if pallette, then 1 */
v = va_arg(ap, int);
if (v == 0)
goto badvalue;
td->td_samplesperpixel = (uint16) v;
break;
case TIFFTAG_ROWSPERSTRIP:
v32 = 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, int);
break;
case TIFFTAG_MAXSAMPLEVALUE:
td->td_maxsamplevalue = (uint16) va_arg(ap, int);
break;
case TIFFTAG_SMINSAMPLEVALUE:
td->td_sminsamplevalue = (double) va_arg(ap, dblparam_t);
break;
case TIFFTAG_SMAXSAMPLEVALUE:
td->td_smaxsamplevalue = (double) va_arg(ap, dblparam_t);
break;
case TIFFTAG_XRESOLUTION:
td->td_xresolution = (float) va_arg(ap, dblparam_t);
break;
case TIFFTAG_YRESOLUTION:
td->td_yresolution = (float) va_arg(ap, dblparam_t);
break;
case TIFFTAG_PLANARCONFIG:
v = va_arg(ap, int);
if (v != PLANARCONFIG_CONTIG && v != PLANARCONFIG_SEPARATE)
goto badvalue;
td->td_planarconfig = (uint16) v;
break;
case TIFFTAG_PAGENAME:
_TIFFsetString(&td->td_pagename, va_arg(ap, char*));
break;
case TIFFTAG_XPOSITION:
td->td_xposition = (float) va_arg(ap, dblparam_t);
break;
case TIFFTAG_YPOSITION:
td->td_yposition = (float) va_arg(ap, dblparam_t);
break;
case TIFFTAG_RESOLUTIONUNIT:
v = va_arg(ap, int);
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, int);
td->td_pagenumber[1] = (uint16) va_arg(ap, int);
break;
case TIFFTAG_HALFTONEHINTS:
td->td_halftonehints[0] = (uint16) va_arg(ap, int);
td->td_halftonehints[1] = (uint16) va_arg(ap, int);
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(td, ap, &v))
goto badvalue;
break;
case TIFFTAG_MATTEING:
td->td_extrasamples = (uint16) (va_arg(ap, int) != 0);
if (td->td_extrasamples) {
uint16 sv = EXTRASAMPLE_ASSOCALPHA;
_TIFFsetShortArray(&td->td_sampleinfo, &sv, 1);
}
break;
case TIFFTAG_TILEWIDTH:
v32 = va_arg(ap, uint32);
if (v32 % 16) {
if (tif->tif_mode != O_RDONLY)
goto badvalue32;
TIFFWarning(tif->tif_name,
"Nonstandard tile width %d, convert file", v32);
}
td->td_tilewidth = v32;
tif->tif_flags |= TIFF_ISTILED;
break;
case TIFFTAG_TILELENGTH:
v32 = va_arg(ap, uint32);
if (v32 % 16) {
if (tif->tif_mode != O_RDONLY)
goto badvalue32;
TIFFWarning(tif->tif_name,
"Nonstandard tile length %d, convert file", v32);
}
td->td_tilelength = v32;
tif->tif_flags |= TIFF_ISTILED;
break;
case TIFFTAG_TILEDEPTH:
v32 = va_arg(ap, uint32);
if (v32 == 0)
goto badvalue32;
td->td_tiledepth = v32;
break;
case TIFFTAG_DATATYPE:
v = va_arg(ap, int);
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 = va_arg(ap, int);
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;
else if( td->td_sampleformat == SAMPLEFORMAT_COMPLEXIEEEFP
&& td->td_bitspersample == 128
&& tif->tif_postdecode == NULL )
tif->tif_postdecode = _TIFFSwab64BitData;
break;
case TIFFTAG_IMAGEDEPTH:
td->td_imagedepth = va_arg(ap, uint32);
break;
case TIFFTAG_STONITS:
d = va_arg(ap, dblparam_t);
if (d <= 0.)
goto badvaluedbl;
td->td_stonits = d;
break;
/* Begin Pixar Tags */
case TIFFTAG_PIXAR_IMAGEFULLWIDTH:
td->td_imagefullwidth = va_arg(ap, uint32);
break;
case TIFFTAG_PIXAR_IMAGEFULLLENGTH:
td->td_imagefulllength = va_arg(ap, uint32);
break;
case TIFFTAG_PIXAR_TEXTUREFORMAT:
_TIFFsetString(&td->td_textureformat, va_arg(ap, char*));
break;
case TIFFTAG_PIXAR_WRAPMODES:
_TIFFsetString(&td->td_wrapmodes, va_arg(ap, char*));
break;
case TIFFTAG_PIXAR_FOVCOT:
td->td_fovcot = (float) va_arg(ap, dblparam_t);
break;
case TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN:
_TIFFsetFloatArray(&td->td_matrixWorldToScreen,
va_arg(ap, float*), 16);
break;
case TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA:
_TIFFsetFloatArray(&td->td_matrixWorldToCamera,
va_arg(ap, float*), 16);
break;
/* End Pixar Tags */
case TIFFTAG_SUBIFD:
if ((tif->tif_flags & TIFF_INSUBIFD) == 0) {
td->td_nsubifd = (uint16) va_arg(ap, int);
_TIFFsetLongArray(&td->td_subifd, va_arg(ap, uint32*),
(long) td->td_nsubifd);
} else {
/*
* Read the next TIFF directory from a file
* and convert it to the internal format.
* We read directories sequentially.
*/
int
TIFFReadDirectory(TIFF* tif)
{
register TIFFDirEntry* dp;
register int n;
register TIFFDirectory* td;
TIFFDirEntry* dir;
int iv;
long v;
double dv;
const TIFFFieldInfo* fip;
int fix;
uint16 dircount;
toff_t nextdiroff;
char* cp;
int diroutoforderwarning = 0;
tif->tif_diroff = tif->tif_nextdiroff;
if (tif->tif_diroff == 0) /* no more directories */
return (0);
/*
* Cleanup any previous compression state.
*/
(*tif->tif_cleanup)(tif);
tif->tif_curdir++;
nextdiroff = 0;
if (!isMapped(tif)) {
if (!SeekOK(tif, tif->tif_diroff)) {
TIFFError(tif->tif_name,
"Seek error accessing TIFF directory");
return (0);
}
if (!ReadOK(tif, &dircount, sizeof (uint16))) {
TIFFError(tif->tif_name,
"Can not read TIFF directory count");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
dir = (TIFFDirEntry *)CheckMalloc(tif,
dircount * sizeof (TIFFDirEntry), "to read TIFF directory");
if (dir == NULL)
return (0);
if (!ReadOK(tif, dir, dircount*sizeof (TIFFDirEntry))) {
TIFFError(tif->tif_name, "Can not read TIFF directory");
goto bad;
}
/*
* Read offset to next directory for sequential scans.
*/
(void) ReadOK(tif, &nextdiroff, sizeof (uint32));
} else {
toff_t off = tif->tif_diroff;
if (off + sizeof (uint16) > tif->tif_size) {
TIFFError(tif->tif_name,
"Can not read TIFF directory count");
return (0);
} else
_TIFFmemcpy(&dircount, tif->tif_base + off, sizeof (uint16));
off += sizeof (uint16);
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
dir = (TIFFDirEntry *)CheckMalloc(tif,
dircount * sizeof (TIFFDirEntry), "to read TIFF directory");
if (dir == NULL)
return (0);
if (off + dircount*sizeof (TIFFDirEntry) > tif->tif_size) {
TIFFError(tif->tif_name, "Can not read TIFF directory");
goto bad;
} else
_TIFFmemcpy(dir, tif->tif_base + off,
dircount*sizeof (TIFFDirEntry));
off += dircount* sizeof (TIFFDirEntry);
if (off + sizeof (uint32) <= tif->tif_size)
_TIFFmemcpy(&nextdiroff, tif->tif_base+off, sizeof (uint32));
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&nextdiroff);
tif->tif_nextdiroff = nextdiroff;
tif->tif_flags &= ~TIFF_BEENWRITING; /* reset before new dir */
/*
* Setup default value and then make a pass over
* the fields to check type and tag information,
* and to extract info required to size data
* structures. A second pass is made afterwards
* to read in everthing not taken in the first pass.
*/
td = &tif->tif_dir;
/* free any old stuff and reinit */
TIFFFreeDirectory(tif);
TIFFDefaultDirectory(tif);
/*
* Electronic Arts writes gray-scale TIFF files
* without a PlanarConfiguration directory entry.
* Thus we setup a default value here, even though
* the TIFF spec says there is no default value.
*/
TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
/*
* Sigh, we must make a separate pass through the
* directory for the following reason:
*
* We must process the Compression tag in the first pass
* in order to merge in codec-private tag definitions (otherwise
* we may get complaints about unknown tags). However, the
* Compression tag may be dependent on the SamplesPerPixel
* tag value because older TIFF specs permited Compression
* to be written as a SamplesPerPixel-count tag entry.
* Thus if we don't first figure out the correct SamplesPerPixel
* tag value then we may end up ignoring the Compression tag
* value because it has an incorrect count value (if the
* true value of SamplesPerPixel is not 1).
*
* It sure would have been nice if Aldus had really thought
* this stuff through carefully.
*/
for (dp = dir, n = dircount; n > 0; n--, dp++) {
if (tif->tif_flags & TIFF_SWAB) {
TIFFSwabArrayOfShort(&dp->tdir_tag, 2);
TIFFSwabArrayOfLong(&dp->tdir_count, 2);
}
if (dp->tdir_tag == TIFFTAG_SAMPLESPERPIXEL) {
if (!TIFFFetchNormalTag(tif, dp))
goto bad;
dp->tdir_tag = IGNORE;
}
}
/*
* First real pass over the directory.
*/
fix = 0;
for (dp = dir, n = dircount; n > 0; n--, dp++) {
/*
* Find the field information entry for this tag.
* Added check for tags to ignore ... [BFC]
*/
if( TIFFReassignTagToIgnore(TIS_EXTRACT, dp->tdir_tag) )
dp->tdir_tag = IGNORE;
if (dp->tdir_tag == IGNORE)
continue;
/*
* Silicon Beach (at least) writes unordered
* directory tags (violating the spec). Handle
* it here, but be obnoxious (maybe they'll fix it?).
*/
if (dp->tdir_tag < tif->tif_fieldinfo[fix]->field_tag) {
if (!diroutoforderwarning) {
TIFFWarning(tif->tif_name,
"invalid TIFF directory; tags are not sorted in ascending order");
diroutoforderwarning = 1;
}
fix = 0; /* O(n^2) */
}
while (fix < tif->tif_nfields &&
tif->tif_fieldinfo[fix]->field_tag < dp->tdir_tag)
fix++;
if (fix == tif->tif_nfields ||
tif->tif_fieldinfo[fix]->field_tag != dp->tdir_tag) {
TIFFWarning(tif->tif_name,
"unknown field with tag %d (0x%x) ignored",
dp->tdir_tag, dp->tdir_tag);
dp->tdir_tag = IGNORE;
fix = 0; /* restart search */
continue;
}
/*
* Null out old tags that we ignore.
*/
if (tif->tif_fieldinfo[fix]->field_bit == FIELD_IGNORE) {
ignore:
dp->tdir_tag = IGNORE;
continue;
}
/*
* Check data type.
*/
fip = tif->tif_fieldinfo[fix];
while (dp->tdir_type != (u_short) fip->field_type) {
if (fip->field_type == TIFF_ANY) /* wildcard */
break;
fip++, fix++;
if (fix == tif->tif_nfields ||
fip->field_tag != dp->tdir_tag) {
TIFFWarning(tif->tif_name,
"wrong data type %d for \"%s\"; tag ignored",
dp->tdir_type, fip[-1].field_name);
goto ignore;
}
}
/*
* Check count if known in advance.
*/
if (fip->field_readcount != TIFF_VARIABLE) {
uint32 expected = (fip->field_readcount == TIFF_SPP) ?
(uint32) td->td_samplesperpixel :
(uint32) fip->field_readcount;
if (!CheckDirCount(tif, dp, expected))
goto ignore;
}
switch (dp->tdir_tag) {
case TIFFTAG_COMPRESSION:
/*
* The 5.0 spec says the Compression tag has
* one value, while earlier specs say it has
* one value per sample. Because of this, we
* accept the tag if one value is supplied.
*/
if (dp->tdir_count == 1) {
v = TIFFExtractData(tif,
dp->tdir_type, dp->tdir_offset);
if (!TIFFSetField(tif, dp->tdir_tag, (int)v))
goto bad;
break;
}
if (!TIFFFetchPerSampleShorts(tif, dp, &iv) ||
!TIFFSetField(tif, dp->tdir_tag, iv))
goto bad;
dp->tdir_tag = IGNORE;
break;
case TIFFTAG_STRIPOFFSETS:
case TIFFTAG_STRIPBYTECOUNTS:
case TIFFTAG_TILEOFFSETS:
case TIFFTAG_TILEBYTECOUNTS:
TIFFSetFieldBit(tif, fip->field_bit);
break;
case TIFFTAG_IMAGEWIDTH:
case TIFFTAG_IMAGELENGTH:
case TIFFTAG_IMAGEDEPTH:
case TIFFTAG_TILELENGTH:
case TIFFTAG_TILEWIDTH:
case TIFFTAG_TILEDEPTH:
case TIFFTAG_PLANARCONFIG:
case TIFFTAG_ROWSPERSTRIP:
if (!TIFFFetchNormalTag(tif, dp))
goto bad;
dp->tdir_tag = IGNORE;
break;
case TIFFTAG_EXTRASAMPLES:
(void) TIFFFetchExtraSamples(tif, dp);
dp->tdir_tag = IGNORE;
break;
}
}
/*
* Allocate directory structure and setup defaults.
*/
if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)) {
MissingRequired(tif, "ImageLength");
goto bad;
}
if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG)) {
MissingRequired(tif, "PlanarConfiguration");
goto bad;
}
/*
* Setup appropriate structures (by strip or by tile)
*/
if (!TIFFFieldSet(tif, FIELD_TILEDIMENSIONS)) {
td->td_nstrips = TIFFNumberOfStrips(tif);
td->td_tilewidth = td->td_imagewidth;
td->td_tilelength = td->td_rowsperstrip;
td->td_tiledepth = td->td_imagedepth;
tif->tif_flags &= ~TIFF_ISTILED;
} else {
td->td_nstrips = TIFFNumberOfTiles(tif);
tif->tif_flags |= TIFF_ISTILED;
}
td->td_stripsperimage = td->td_nstrips;
if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
td->td_stripsperimage /= td->td_samplesperpixel;
if (!TIFFFieldSet(tif, FIELD_STRIPOFFSETS)) {
MissingRequired(tif,
isTiled(tif) ? "TileOffsets" : "StripOffsets");
goto bad;
}
/*
* Second pass: extract other information.
*/
for (dp = dir, n = dircount; n > 0; n--, dp++) {
if (dp->tdir_tag == IGNORE)
continue;
switch (dp->tdir_tag) {
case TIFFTAG_MINSAMPLEVALUE:
case TIFFTAG_MAXSAMPLEVALUE:
case TIFFTAG_BITSPERSAMPLE:
/*
* The 5.0 spec says the Compression tag has
* one value, while earlier specs say it has
* one value per sample. Because of this, we
* accept the tag if one value is supplied.
*
* The MinSampleValue, MaxSampleValue and
* BitsPerSample tags are supposed to be written
* as one value/sample, but some vendors incorrectly
* write one value only -- so we accept that
* as well (yech).
*/
if (dp->tdir_count == 1) {
v = TIFFExtractData(tif,
dp->tdir_type, dp->tdir_offset);
if (!TIFFSetField(tif, dp->tdir_tag, (int)v))
goto bad;
break;
}
/* fall thru... */
case TIFFTAG_DATATYPE:
case TIFFTAG_SAMPLEFORMAT:
if (!TIFFFetchPerSampleShorts(tif, dp, &iv) ||
!TIFFSetField(tif, dp->tdir_tag, iv))
goto bad;
break;
case TIFFTAG_SMINSAMPLEVALUE:
case TIFFTAG_SMAXSAMPLEVALUE:
if (!TIFFFetchPerSampleAnys(tif, dp, &dv) ||
!TIFFSetField(tif, dp->tdir_tag, dv))
goto bad;
break;
case TIFFTAG_STRIPOFFSETS:
case TIFFTAG_TILEOFFSETS:
if (!TIFFFetchStripThing(tif, dp,
td->td_nstrips, &td->td_stripoffset))
goto bad;
break;
case TIFFTAG_STRIPBYTECOUNTS:
case TIFFTAG_TILEBYTECOUNTS:
if (!TIFFFetchStripThing(tif, dp,
td->td_nstrips, &td->td_stripbytecount))
goto bad;
break;
case TIFFTAG_COLORMAP:
case TIFFTAG_TRANSFERFUNCTION:
/*
* TransferFunction can have either 1x or 3x data
* values; Colormap can have only 3x items.
*/
v = 1L<<td->td_bitspersample;
if (dp->tdir_tag == TIFFTAG_COLORMAP ||
dp->tdir_count != (uint32) v) {
if (!CheckDirCount(tif, dp, (uint32)(3*v)))
break;
}
v *= sizeof (uint16);
cp = CheckMalloc(tif, dp->tdir_count * sizeof (uint16),
"to read \"TransferFunction\" tag");
if (cp != NULL) {
if (TIFFFetchData(tif, dp, cp)) {
/*
* This deals with there being only
* one array to apply to all samples.
*/
uint32 c =
(uint32)1 << td->td_bitspersample;
if (dp->tdir_count == c)
v = 0;
TIFFSetField(tif, dp->tdir_tag,
cp, cp+v, cp+2*v);
}
_TIFFfree(cp);
}
break;
case TIFFTAG_PAGENUMBER:
case TIFFTAG_HALFTONEHINTS:
case TIFFTAG_YCBCRSUBSAMPLING:
case TIFFTAG_DOTRANGE:
(void) TIFFFetchShortPair(tif, dp);
break;
#ifdef COLORIMETRY_SUPPORT
case TIFFTAG_REFERENCEBLACKWHITE:
(void) TIFFFetchRefBlackWhite(tif, dp);
break;
#endif
/* BEGIN REV 4.0 COMPATIBILITY */
case TIFFTAG_OSUBFILETYPE:
v = 0;
switch (TIFFExtractData(tif, dp->tdir_type,
dp->tdir_offset)) {
case OFILETYPE_REDUCEDIMAGE:
v = FILETYPE_REDUCEDIMAGE;
break;
case OFILETYPE_PAGE:
v = FILETYPE_PAGE;
break;
}
if (v)
(void) TIFFSetField(tif,
TIFFTAG_SUBFILETYPE, (int)v);
break;
/* END REV 4.0 COMPATIBILITY */
default:
(void) TIFFFetchNormalTag(tif, dp);
break;
}
}
/*
* Verify Palette image has a Colormap.
*/
if (td->td_photometric == PHOTOMETRIC_PALETTE &&
!TIFFFieldSet(tif, FIELD_COLORMAP)) {
MissingRequired(tif, "Colormap");
goto bad;
}
/*
* Attempt to deal with a missing StripByteCounts tag.
*/
if (!TIFFFieldSet(tif, FIELD_STRIPBYTECOUNTS)) {
/*
* Some manufacturers violate the spec by not giving
* the size of the strips. In this case, assume there
* is one uncompressed strip of data.
*/
if ((td->td_planarconfig == PLANARCONFIG_CONTIG &&
td->td_nstrips > 1) ||
(td->td_planarconfig == PLANARCONFIG_SEPARATE &&
td->td_nstrips != td->td_samplesperpixel)) {
MissingRequired(tif, "StripByteCounts");
goto bad;
}
TIFFWarning(tif->tif_name,
"TIFF directory is missing required \"%s\" field, calculating from imagelength",
_TIFFFieldWithTag(tif,TIFFTAG_STRIPBYTECOUNTS)->field_name);
EstimateStripByteCounts(tif, dir, dircount);
#define BYTECOUNTLOOKSBAD \
((td->td_stripbytecount[0] == 0 && td->td_stripoffset[0] != 0) || \
(td->td_compression == COMPRESSION_NONE && \
td->td_stripbytecount[0] > TIFFGetFileSize(tif) - td->td_stripoffset[0]))
} else if (td->td_nstrips == 1 && BYTECOUNTLOOKSBAD) {
/*
* Plexus (and others) sometimes give a value
* of zero for a tag when they don't know what
* the correct value is! Try and handle the
* simple case of estimating the size of a one
* strip image.
*/
TIFFWarning(tif->tif_name,
"Bogus \"%s\" field, ignoring and calculating from imagelength",
_TIFFFieldWithTag(tif,TIFFTAG_STRIPBYTECOUNTS)->field_name);
EstimateStripByteCounts(tif, dir, dircount);
}
if (dir)
_TIFFfree((char *)dir);
if (!TIFFFieldSet(tif, FIELD_MAXSAMPLEVALUE))
td->td_maxsamplevalue = (uint16)((1L<<td->td_bitspersample)-1);
/*
* Setup default compression scheme.
*/
if (!TIFFFieldSet(tif, FIELD_COMPRESSION))
TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
/*
* Some manufacturers make life difficult by writing
* large amounts of uncompressed data as a single strip.
* This is contrary to the recommendations of the spec.
* The following makes an attempt at breaking such images
* into strips closer to the recommended 8k bytes. A
* side effect, however, is that the RowsPerStrip tag
* value may be changed.
*/
if (td->td_nstrips == 1 && td->td_compression == COMPRESSION_NONE &&
(tif->tif_flags & (TIFF_STRIPCHOP|TIFF_ISTILED)) == TIFF_STRIPCHOP)
ChopUpSingleUncompressedStrip(tif);
/*
* Reinitialize i/o since we are starting on a new directory.
*/
tif->tif_row = (uint32) -1;
tif->tif_curstrip = (tstrip_t) -1;
tif->tif_col = (uint32) -1;
tif->tif_curtile = (ttile_t) -1;
tif->tif_tilesize = TIFFTileSize(tif);
tif->tif_scanlinesize = TIFFScanlineSize(tif);
return (1);
bad:
if (dir)
_TIFFfree(dir);
return (0);
}
