-/* $Id$ */
/*
* Copyright (c) 1991-1997 Sam Leffler
*/
#include "tiffiop.h"
-static uint32
-summarize(TIFF* tif, size_t summand1, size_t summand2, const char* where)
-{
- /*
- * XXX: We are using casting to uint32 here, bacause sizeof(size_t)
- * may be larger than sizeof(uint32) on 64-bit architectures.
- */
- uint32 bytes = summand1 + summand2;
-
- if (bytes - summand1 != summand2) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Integer overflow in %s", where);
- bytes = 0;
- }
-
- return (bytes);
-}
-
-static uint32
-multiply(TIFF* tif, size_t nmemb, size_t elem_size, const char* where)
-{
- uint32 bytes = nmemb * elem_size;
-
- if (elem_size && bytes / elem_size != nmemb) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Integer overflow in %s", where);
- bytes = 0;
- }
-
- return (bytes);
-}
-
/*
* Compute which strip a (row,sample) value is in.
*/
-tstrip_t
-TIFFComputeStrip(TIFF* tif, uint32 row, tsample_t sample)
+uint32
+TIFFComputeStrip(TIFF* tif, uint32 row, uint16 sample)
{
+ static const char module[] = "TIFFComputeStrip";
TIFFDirectory *td = &tif->tif_dir;
- tstrip_t strip;
+ uint32 strip;
strip = row / td->td_rowsperstrip;
if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
if (sample >= td->td_samplesperpixel) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ TIFFErrorExt(tif->tif_clientdata, module,
"%lu: Sample out of range, max %lu",
(unsigned long) sample, (unsigned long) td->td_samplesperpixel);
- return ((tstrip_t) 0);
+ return (0);
}
- strip += sample*td->td_stripsperimage;
+ strip += (uint32)sample*td->td_stripsperimage;
}
return (strip);
}
/*
* Compute how many strips are in an image.
*/
-tstrip_t
+uint32
TIFFNumberOfStrips(TIFF* tif)
{
TIFFDirectory *td = &tif->tif_dir;
- tstrip_t nstrips;
+ uint32 nstrips;
nstrips = (td->td_rowsperstrip == (uint32) -1 ? 1 :
- TIFFhowmany(td->td_imagelength, td->td_rowsperstrip));
+ TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip));
if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
- nstrips = multiply(tif, nstrips, td->td_samplesperpixel,
- "TIFFNumberOfStrips");
+ nstrips = _TIFFMultiply32(tif, nstrips, (uint32)td->td_samplesperpixel,
+ "TIFFNumberOfStrips");
return (nstrips);
}
/*
* Compute the # bytes in a variable height, row-aligned strip.
*/
-tsize_t
-TIFFVStripSize(TIFF* tif, uint32 nrows)
+uint64
+TIFFVStripSize64(TIFF* tif, uint32 nrows)
{
+ static const char module[] = "TIFFVStripSize64";
TIFFDirectory *td = &tif->tif_dir;
-
- if (nrows == (uint32) -1)
- nrows = td->td_imagelength;
- if (td->td_planarconfig == PLANARCONFIG_CONTIG &&
- td->td_photometric == PHOTOMETRIC_YCBCR &&
- !isUpSampled(tif)) {
+ if (nrows==(uint32)(-1))
+ nrows=td->td_imagelength;
+ if ((td->td_planarconfig==PLANARCONFIG_CONTIG)&&
+ (td->td_photometric == PHOTOMETRIC_YCBCR)&&
+ (!isUpSampled(tif)))
+ {
/*
* Packed YCbCr data contain one Cb+Cr for every
* HorizontalSampling*VerticalSampling Y values.
* horizontal/vertical subsampling area include
* YCbCr data for the extended image.
*/
- uint16 ycbcrsubsampling[2];
- tsize_t w, scanline, samplingarea;
-
- TIFFGetField( tif, TIFFTAG_YCBCRSUBSAMPLING,
- ycbcrsubsampling + 0,
- ycbcrsubsampling + 1 );
-
- samplingarea = ycbcrsubsampling[0]*ycbcrsubsampling[1];
- if (samplingarea == 0) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "Invalid YCbCr subsampling");
+ uint16 ycbcrsubsampling[2];
+ uint16 samplingblock_samples;
+ uint32 samplingblocks_hor;
+ uint32 samplingblocks_ver;
+ uint64 samplingrow_samples;
+ uint64 samplingrow_size;
+ if(td->td_samplesperpixel!=3)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Invalid td_samplesperpixel value");
return 0;
}
-
- w = TIFFroundup(td->td_imagewidth, ycbcrsubsampling[0]);
- scanline = TIFFhowmany8(multiply(tif, w, td->td_bitspersample,
- "TIFFVStripSize"));
- nrows = TIFFroundup(nrows, ycbcrsubsampling[1]);
- /* NB: don't need TIFFhowmany here 'cuz everything is rounded */
- scanline = multiply(tif, nrows, scanline, "TIFFVStripSize");
- return ((tsize_t)
- summarize(tif, scanline,
- multiply(tif, 2, scanline / samplingarea,
- "TIFFVStripSize"), "TIFFVStripSize"));
- } else
- return ((tsize_t) multiply(tif, nrows, TIFFScanlineSize(tif),
- "TIFFVStripSize"));
+ TIFFGetFieldDefaulted(tif,TIFFTAG_YCBCRSUBSAMPLING,ycbcrsubsampling+0,
+ ycbcrsubsampling+1);
+ if ((ycbcrsubsampling[0] != 1 && ycbcrsubsampling[0] != 2 && ycbcrsubsampling[0] != 4)
+ ||(ycbcrsubsampling[1] != 1 && ycbcrsubsampling[1] != 2 && ycbcrsubsampling[1] != 4))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Invalid YCbCr subsampling (%dx%d)",
+ ycbcrsubsampling[0],
+ ycbcrsubsampling[1] );
+ return 0;
+ }
+ samplingblock_samples=ycbcrsubsampling[0]*ycbcrsubsampling[1]+2;
+ samplingblocks_hor=TIFFhowmany_32(td->td_imagewidth,ycbcrsubsampling[0]);
+ samplingblocks_ver=TIFFhowmany_32(nrows,ycbcrsubsampling[1]);
+ samplingrow_samples=_TIFFMultiply64(tif,samplingblocks_hor,samplingblock_samples,module);
+ samplingrow_size=TIFFhowmany8_64(_TIFFMultiply64(tif,samplingrow_samples,td->td_bitspersample,module));
+ return(_TIFFMultiply64(tif,samplingrow_size,samplingblocks_ver,module));
+ }
+ else
+ return(_TIFFMultiply64(tif,nrows,TIFFScanlineSize64(tif),module));
+}
+tmsize_t
+TIFFVStripSize(TIFF* tif, uint32 nrows)
+{
+ static const char module[] = "TIFFVStripSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFVStripSize64(tif,nrows);
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ n=0;
+ }
+ return(n);
}
-
/*
* Compute the # bytes in a raw strip.
*/
-tsize_t
-TIFFRawStripSize(TIFF* tif, tstrip_t strip)
+uint64
+TIFFRawStripSize64(TIFF* tif, uint32 strip)
{
+ static const char module[] = "TIFFRawStripSize64";
TIFFDirectory* td = &tif->tif_dir;
- tsize_t bytecount = td->td_stripbytecount[strip];
+ uint64 bytecount = td->td_stripbytecount[strip];
- if (bytecount <= 0) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "%lu: Invalid strip byte count, strip %lu",
- (unsigned long) bytecount, (unsigned long) strip);
- bytecount = (tsize_t) -1;
+ if (bytecount == 0)
+ {
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%I64u: Invalid strip byte count, strip %lu",
+ (unsigned __int64) bytecount,
+ (unsigned long) strip);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "%llu: Invalid strip byte count, strip %lu",
+ (unsigned long long) bytecount,
+ (unsigned long) strip);
+#endif
+ bytecount = (uint64) -1;
}
return bytecount;
}
+tmsize_t
+TIFFRawStripSize(TIFF* tif, uint32 strip)
+{
+ static const char module[] = "TIFFRawStripSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFRawStripSize64(tif,strip);
+ if (m==(uint64)(-1))
+ n=(tmsize_t)(-1);
+ else
+ {
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ n=0;
+ }
+ }
+ return(n);
+}
/*
* Compute the # bytes in a (row-aligned) strip.
* truncated to reflect the actual space required
* to hold the strip.
*/
-tsize_t
-TIFFStripSize(TIFF* tif)
+uint64
+TIFFStripSize64(TIFF* tif)
{
TIFFDirectory* td = &tif->tif_dir;
uint32 rps = td->td_rowsperstrip;
if (rps > td->td_imagelength)
rps = td->td_imagelength;
- return (TIFFVStripSize(tif, rps));
+ return (TIFFVStripSize64(tif, rps));
+}
+tmsize_t
+TIFFStripSize(TIFF* tif)
+{
+ static const char module[] = "TIFFStripSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFStripSize64(tif);
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ n=0;
+ }
+ return(n);
}
/*
* image up into strips that are approximately
* STRIP_SIZE_DEFAULT bytes long.
*/
- tsize_t scanline = TIFFScanlineSize(tif);
- s = (uint32)STRIP_SIZE_DEFAULT / (scanline == 0 ? 1 : scanline);
- if (s == 0) /* very wide images */
- s = 1;
+ uint64 scanlinesize;
+ uint64 rows;
+ scanlinesize=TIFFScanlineSize64(tif);
+ if (scanlinesize==0)
+ scanlinesize=1;
+ rows=(uint64)STRIP_SIZE_DEFAULT/scanlinesize;
+ if (rows==0)
+ rows=1;
+ else if (rows>0xFFFFFFFF)
+ rows=0xFFFFFFFF;
+ s=(uint32)rows;
}
return (s);
}
* one of the scanline-oriented i/o routines. Note that
* this number may be 1/samples-per-pixel if data is
* stored as separate planes.
+ * The ScanlineSize in case of YCbCrSubsampling is defined as the
+ * strip size divided by the strip height, i.e. the size of a pack of vertical
+ * subsampling lines divided by vertical subsampling. It should thus make
+ * sense when multiplied by a multiple of vertical subsampling.
*/
-tsize_t
-TIFFScanlineSize(TIFF* tif)
+uint64
+TIFFScanlineSize64(TIFF* tif)
{
+ static const char module[] = "TIFFScanlineSize64";
TIFFDirectory *td = &tif->tif_dir;
- tsize_t scanline;
-
- if (td->td_planarconfig == PLANARCONFIG_CONTIG) {
- if (td->td_photometric == PHOTOMETRIC_YCBCR
- && !isUpSampled(tif)) {
+ uint64 scanline_size;
+ if (td->td_planarconfig==PLANARCONFIG_CONTIG)
+ {
+ if ((td->td_photometric==PHOTOMETRIC_YCBCR)&&
+ (td->td_samplesperpixel==3)&&
+ (!isUpSampled(tif)))
+ {
uint16 ycbcrsubsampling[2];
-
- TIFFGetField(tif, TIFFTAG_YCBCRSUBSAMPLING,
- ycbcrsubsampling + 0,
- ycbcrsubsampling + 1);
-
- if (ycbcrsubsampling[0] == 0) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "Invalid YCbCr subsampling");
- return 0;
+ uint16 samplingblock_samples;
+ uint32 samplingblocks_hor;
+ uint64 samplingrow_samples;
+ uint64 samplingrow_size;
+ if(td->td_samplesperpixel!=3)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Invalid td_samplesperpixel value");
+ return 0;
}
-
- scanline = TIFFroundup(td->td_imagewidth,
- ycbcrsubsampling[0]);
- scanline = TIFFhowmany8(multiply(tif, scanline,
- td->td_bitspersample,
- "TIFFScanlineSize"));
- return ((tsize_t)
- summarize(tif, scanline,
- multiply(tif, 2,
- scanline / ycbcrsubsampling[0],
- "TIFFVStripSize"),
- "TIFFVStripSize"));
- } else {
- scanline = multiply(tif, td->td_imagewidth,
- td->td_samplesperpixel,
- "TIFFScanlineSize");
+ TIFFGetFieldDefaulted(tif,TIFFTAG_YCBCRSUBSAMPLING,
+ ycbcrsubsampling+0,
+ ycbcrsubsampling+1);
+ if (((ycbcrsubsampling[0]!=1)&&(ycbcrsubsampling[0]!=2)&&(ycbcrsubsampling[0]!=4)) ||
+ ((ycbcrsubsampling[1]!=1)&&(ycbcrsubsampling[1]!=2)&&(ycbcrsubsampling[1]!=4)))
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,
+ "Invalid YCbCr subsampling");
+ return 0;
+ }
+ samplingblock_samples = ycbcrsubsampling[0]*ycbcrsubsampling[1]+2;
+ samplingblocks_hor = TIFFhowmany_32(td->td_imagewidth,ycbcrsubsampling[0]);
+ samplingrow_samples = _TIFFMultiply64(tif,samplingblocks_hor,samplingblock_samples,module);
+ samplingrow_size = TIFFhowmany_64(_TIFFMultiply64(tif,samplingrow_samples,td->td_bitspersample,module),8);
+ scanline_size = (samplingrow_size/ycbcrsubsampling[1]);
}
- } else
- scanline = td->td_imagewidth;
- return ((tsize_t) TIFFhowmany8(multiply(tif, scanline,
- td->td_bitspersample,
- "TIFFScanlineSize")));
+ else
+ {
+ uint64 scanline_samples;
+ scanline_samples=_TIFFMultiply64(tif,td->td_imagewidth,td->td_samplesperpixel,module);
+ scanline_size=TIFFhowmany_64(_TIFFMultiply64(tif,scanline_samples,td->td_bitspersample,module),8);
+ }
+ }
+ else
+ scanline_size=TIFFhowmany_64(_TIFFMultiply64(tif,td->td_imagewidth,td->td_bitspersample,module),8);
+ return(scanline_size);
+}
+tmsize_t
+TIFFScanlineSize(TIFF* tif)
+{
+ static const char module[] = "TIFFScanlineSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFScanlineSize64(tif);
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer arithmetic overflow");
+ n=0;
+ }
+ return(n);
}
/*
* I/O size returned by TIFFScanlineSize which may be less
* if data is store as separate planes).
*/
-tsize_t
-TIFFRasterScanlineSize(TIFF* tif)
+uint64
+TIFFRasterScanlineSize64(TIFF* tif)
{
+ static const char module[] = "TIFFRasterScanlineSize64";
TIFFDirectory *td = &tif->tif_dir;
- tsize_t scanline;
-
- scanline = multiply (tif, td->td_bitspersample, td->td_imagewidth,
- "TIFFRasterScanlineSize");
+ uint64 scanline;
+
+ scanline = _TIFFMultiply64(tif, td->td_bitspersample, td->td_imagewidth, module);
if (td->td_planarconfig == PLANARCONFIG_CONTIG) {
- scanline = multiply (tif, scanline, td->td_samplesperpixel,
- "TIFFRasterScanlineSize");
- return ((tsize_t) TIFFhowmany8(scanline));
+ scanline = _TIFFMultiply64(tif, scanline, td->td_samplesperpixel, module);
+ return (TIFFhowmany8_64(scanline));
} else
- return ((tsize_t) multiply (tif, TIFFhowmany8(scanline),
- td->td_samplesperpixel,
- "TIFFRasterScanlineSize"));
+ return (_TIFFMultiply64(tif, TIFFhowmany8_64(scanline),
+ td->td_samplesperpixel, module));
+}
+tmsize_t
+TIFFRasterScanlineSize(TIFF* tif)
+{
+ static const char module[] = "TIFFRasterScanlineSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFRasterScanlineSize64(tif);
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer arithmetic overflow");
+ n=0;
+ }
+ return(n);
}
/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
projects / wxWidgets.git / blobdiff