-/* $Id: tif_tile.c,v 1.12.2.1 2010-06-08 18:50:43 bfriesen Exp $ */
+/* $Id: tif_tile.c,v 1.23 2012-06-06 05:33:55 fwarmerdam Exp $ */
/*
* 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, because 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 tile an (x,y,z,s) value is in.
*/
-ttile_t
-TIFFComputeTile(TIFF* tif, uint32 x, uint32 y, uint32 z, tsample_t s)
+uint32
+TIFFComputeTile(TIFF* tif, uint32 x, uint32 y, uint32 z, uint16 s)
{
TIFFDirectory *td = &tif->tif_dir;
uint32 dx = td->td_tilewidth;
uint32 dy = td->td_tilelength;
uint32 dz = td->td_tiledepth;
- ttile_t tile = 1;
+ uint32 tile = 1;
if (td->td_imagedepth == 1)
z = 0;
if (dz == (uint32) -1)
dz = td->td_imagedepth;
if (dx != 0 && dy != 0 && dz != 0) {
- uint32 xpt = TIFFhowmany(td->td_imagewidth, dx);
- uint32 ypt = TIFFhowmany(td->td_imagelength, dy);
- uint32 zpt = TIFFhowmany(td->td_imagedepth, dz);
+ uint32 xpt = TIFFhowmany_32(td->td_imagewidth, dx);
+ uint32 ypt = TIFFhowmany_32(td->td_imagelength, dy);
+ uint32 zpt = TIFFhowmany_32(td->td_imagedepth, dz);
if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
tile = (xpt*ypt*zpt)*s +
* against the image bounds.
*/
int
-TIFFCheckTile(TIFF* tif, uint32 x, uint32 y, uint32 z, tsample_t s)
+TIFFCheckTile(TIFF* tif, uint32 x, uint32 y, uint32 z, uint16 s)
{
TIFFDirectory *td = &tif->tif_dir;
/*
* Compute how many tiles are in an image.
*/
-ttile_t
+uint32
TIFFNumberOfTiles(TIFF* tif)
{
TIFFDirectory *td = &tif->tif_dir;
uint32 dx = td->td_tilewidth;
uint32 dy = td->td_tilelength;
uint32 dz = td->td_tiledepth;
- ttile_t ntiles;
+ uint32 ntiles;
if (dx == (uint32) -1)
dx = td->td_imagewidth;
if (dz == (uint32) -1)
dz = td->td_imagedepth;
ntiles = (dx == 0 || dy == 0 || dz == 0) ? 0 :
- multiply(tif, multiply(tif, TIFFhowmany(td->td_imagewidth, dx),
- TIFFhowmany(td->td_imagelength, dy),
- "TIFFNumberOfTiles"),
- TIFFhowmany(td->td_imagedepth, dz), "TIFFNumberOfTiles");
+ _TIFFMultiply32(tif, _TIFFMultiply32(tif, TIFFhowmany_32(td->td_imagewidth, dx),
+ TIFFhowmany_32(td->td_imagelength, dy),
+ "TIFFNumberOfTiles"),
+ TIFFhowmany_32(td->td_imagedepth, dz), "TIFFNumberOfTiles");
if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
- ntiles = multiply(tif, ntiles, td->td_samplesperpixel,
- "TIFFNumberOfTiles");
+ ntiles = _TIFFMultiply32(tif, ntiles, td->td_samplesperpixel,
+ "TIFFNumberOfTiles");
return (ntiles);
}
/*
* Compute the # bytes in each row of a tile.
*/
-tsize_t
-TIFFTileRowSize(TIFF* tif)
+uint64
+TIFFTileRowSize64(TIFF* tif)
{
TIFFDirectory *td = &tif->tif_dir;
- tsize_t rowsize;
-
+ uint64 rowsize;
+
if (td->td_tilelength == 0 || td->td_tilewidth == 0)
- return ((tsize_t) 0);
- rowsize = multiply(tif, td->td_bitspersample, td->td_tilewidth,
- "TIFFTileRowSize");
+ return (0);
+ rowsize = _TIFFMultiply64(tif, td->td_bitspersample, td->td_tilewidth,
+ "TIFFTileRowSize");
if (td->td_planarconfig == PLANARCONFIG_CONTIG)
- rowsize = multiply(tif, rowsize, td->td_samplesperpixel,
- "TIFFTileRowSize");
- return ((tsize_t) TIFFhowmany8(rowsize));
+ rowsize = _TIFFMultiply64(tif, rowsize, td->td_samplesperpixel,
+ "TIFFTileRowSize");
+ return (TIFFhowmany8_64(rowsize));
+}
+tmsize_t
+TIFFTileRowSize(TIFF* tif)
+{
+ static const char module[] = "TIFFTileRowSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFTileRowSize64(tif);
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ n=0;
+ }
+ return(n);
}
/*
* Compute the # bytes in a variable length, row-aligned tile.
*/
-tsize_t
-TIFFVTileSize(TIFF* tif, uint32 nrows)
+uint64
+TIFFVTileSize64(TIFF* tif, uint32 nrows)
{
+ static const char module[] = "TIFFVTileSize64";
TIFFDirectory *td = &tif->tif_dir;
- tsize_t tilesize;
-
if (td->td_tilelength == 0 || td->td_tilewidth == 0 ||
td->td_tiledepth == 0)
- return ((tsize_t) 0);
- if (td->td_planarconfig == PLANARCONFIG_CONTIG &&
- td->td_photometric == PHOTOMETRIC_YCBCR &&
- !isUpSampled(tif)) {
+ return (0);
+ if ((td->td_planarconfig==PLANARCONFIG_CONTIG)&&
+ (td->td_photometric==PHOTOMETRIC_YCBCR)&&
+ (td->td_samplesperpixel==3)&&
+ (!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.
*/
- tsize_t w =
- TIFFroundup(td->td_tilewidth, td->td_ycbcrsubsampling[0]);
- tsize_t rowsize =
- TIFFhowmany8(multiply(tif, w, td->td_bitspersample,
- "TIFFVTileSize"));
- tsize_t samplingarea =
- td->td_ycbcrsubsampling[0]*td->td_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;
+ 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;
}
- nrows = TIFFroundup(nrows, td->td_ycbcrsubsampling[1]);
- /* NB: don't need TIFFhowmany here 'cuz everything is rounded */
- tilesize = multiply(tif, nrows, rowsize, "TIFFVTileSize");
- tilesize = summarize(tif, tilesize,
- multiply(tif, 2, tilesize / samplingarea,
- "TIFFVTileSize"),
- "TIFFVTileSize");
- } else
- tilesize = multiply(tif, nrows, TIFFTileRowSize(tif),
- "TIFFVTileSize");
- return ((tsize_t)
- multiply(tif, tilesize, td->td_tiledepth, "TIFFVTileSize"));
+ samplingblock_samples=ycbcrsubsampling[0]*ycbcrsubsampling[1]+2;
+ samplingblocks_hor=TIFFhowmany_32(td->td_tilewidth,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,TIFFTileRowSize64(tif),module));
+}
+tmsize_t
+TIFFVTileSize(TIFF* tif, uint32 nrows)
+{
+ static const char module[] = "TIFFVTileSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFVTileSize64(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 row-aligned tile.
*/
-tsize_t
+uint64
+TIFFTileSize64(TIFF* tif)
+{
+ return (TIFFVTileSize64(tif, tif->tif_dir.td_tilelength));
+}
+tmsize_t
TIFFTileSize(TIFF* tif)
{
- return (TIFFVTileSize(tif, tif->tif_dir.td_tilelength));
+ static const char module[] = "TIFFTileSize";
+ uint64 m;
+ tmsize_t n;
+ m=TIFFTileSize64(tif);
+ n=(tmsize_t)m;
+ if ((uint64)n!=m)
+ {
+ TIFFErrorExt(tif->tif_clientdata,module,"Integer overflow");
+ n=0;
+ }
+ return(n);
}
/*
*th = 256;
/* roundup to a multiple of 16 per the spec */
if (*tw & 0xf)
- *tw = TIFFroundup(*tw, 16);
+ *tw = TIFFroundup_32(*tw, 16);
if (*th & 0xf)
- *th = TIFFroundup(*th, 16);
+ *th = TIFFroundup_32(*th, 16);
}
/* vim: set ts=8 sts=8 sw=8 noet: */
projects / reactos.git / blobdiff