diff options
Diffstat (limited to 'src/3rdparty/libtiff/libtiff/tif_tile.c')
| -rw-r--r-- | src/3rdparty/libtiff/libtiff/tif_tile.c | 204 |
1 files changed, 115 insertions, 89 deletions
diff --git a/src/3rdparty/libtiff/libtiff/tif_tile.c b/src/3rdparty/libtiff/libtiff/tif_tile.c index 454fe5cd24..0ff7e85352 100644 --- a/src/3rdparty/libtiff/libtiff/tif_tile.c +++ b/src/3rdparty/libtiff/libtiff/tif_tile.c @@ -1,4 +1,4 @@ -/* $Id: tif_tile.c,v 1.12 2006/02/09 16:15:43 dron Exp $ */ +/* $Id: tif_tile.c,v 1.23 2012-06-06 05:33:55 fwarmerdam Exp $ */ /* * Copyright (c) 1991-1997 Sam Leffler @@ -31,47 +31,17 @@ */ #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; @@ -82,9 +52,9 @@ TIFFComputeTile(TIFF* tif, uint32 x, uint32 y, uint32 z, tsample_t s) 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 + @@ -102,7 +72,7 @@ TIFFComputeTile(TIFF* tif, uint32 x, uint32 y, uint32 z, tsample_t 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; @@ -141,14 +111,14 @@ TIFFCheckTile(TIFF* tif, uint32 x, uint32 y, uint32 z, tsample_t s) /* * 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; @@ -157,50 +127,66 @@ TIFFNumberOfTiles(TIFF* tif) 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. @@ -209,38 +195,71 @@ TIFFVTileSize(TIFF* tif, uint32 nrows) * 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); } /* @@ -265,9 +284,16 @@ _TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th) *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: */ +/* + * Local Variables: + * mode: c + * c-basic-offset: 8 + * fill-column: 78 + * End: + */ |