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-rwxr-xr-xtiff/libtiff/tif_strip.c383
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diff --git a/tiff/libtiff/tif_strip.c b/tiff/libtiff/tif_strip.c
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--- a/tiff/libtiff/tif_strip.c
+++ /dev/null
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-/* $Id: tif_strip.c,v 1.35 2012-06-06 05:33:55 fwarmerdam Exp $ */
-
-/*
- * Copyright (c) 1991-1997 Sam Leffler
- * Copyright (c) 1991-1997 Silicon Graphics, Inc.
- *
- * Permission to use, copy, modify, distribute, and sell this software and
- * its documentation for any purpose is hereby granted without fee, provided
- * that (i) the above copyright notices and this permission notice appear in
- * all copies of the software and related documentation, and (ii) the names of
- * Sam Leffler and Silicon Graphics may not be used in any advertising or
- * publicity relating to the software without the specific, prior written
- * permission of Sam Leffler and Silicon Graphics.
- *
- * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
- * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
- *
- * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
- * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
- * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
- * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- * OF THIS SOFTWARE.
- */
-
-/*
- * TIFF Library.
- *
- * Strip-organized Image Support Routines.
- */
-#include "tiffiop.h"
-
-/*
- * Compute which strip a (row,sample) value is in.
- */
-uint32
-TIFFComputeStrip(TIFF* tif, uint32 row, uint16 sample)
-{
- static const char module[] = "TIFFComputeStrip";
- TIFFDirectory *td = &tif->tif_dir;
- uint32 strip;
-
- strip = row / td->td_rowsperstrip;
- if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
- if (sample >= td->td_samplesperpixel) {
- TIFFErrorExt(tif->tif_clientdata, module,
- "%lu: Sample out of range, max %lu",
- (unsigned long) sample, (unsigned long) td->td_samplesperpixel);
- return (0);
- }
- strip += (uint32)sample*td->td_stripsperimage;
- }
- return (strip);
-}
-
-/*
- * Compute how many strips are in an image.
- */
-uint32
-TIFFNumberOfStrips(TIFF* tif)
-{
- TIFFDirectory *td = &tif->tif_dir;
- uint32 nstrips;
-
- nstrips = (td->td_rowsperstrip == (uint32) -1 ? 1 :
- TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip));
- if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
- nstrips = _TIFFMultiply32(tif, nstrips, (uint32)td->td_samplesperpixel,
- "TIFFNumberOfStrips");
- return (nstrips);
-}
-
-/*
- * Compute the # bytes in a variable height, row-aligned strip.
- */
-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)))
- {
- /*
- * Packed YCbCr data contain one Cb+Cr for every
- * HorizontalSampling*VerticalSampling Y values.
- * Must also roundup width and height when calculating
- * since images that are not a multiple of the
- * horizontal/vertical subsampling area include
- * YCbCr data for the extended image.
- */
- 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;
- }
- 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.
- */
-uint64
-TIFFRawStripSize64(TIFF* tif, uint32 strip)
-{
- static const char module[] = "TIFFRawStripSize64";
- TIFFDirectory* td = &tif->tif_dir;
- uint64 bytecount = td->td_stripbytecount[strip];
-
- 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.
- *
- * Note that if RowsPerStrip is larger than the
- * recorded ImageLength, then the strip size is
- * truncated to reflect the actual space required
- * to hold the strip.
- */
-uint64
-TIFFStripSize64(TIFF* tif)
-{
- TIFFDirectory* td = &tif->tif_dir;
- uint32 rps = td->td_rowsperstrip;
- if (rps > td->td_imagelength)
- rps = td->td_imagelength;
- 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);
-}
-
-/*
- * Compute a default strip size based on the image
- * characteristics and a requested value. If the
- * request is <1 then we choose a strip size according
- * to certain heuristics.
- */
-uint32
-TIFFDefaultStripSize(TIFF* tif, uint32 request)
-{
- return (*tif->tif_defstripsize)(tif, request);
-}
-
-uint32
-_TIFFDefaultStripSize(TIFF* tif, uint32 s)
-{
- if ((int32) s < 1) {
- /*
- * If RowsPerStrip is unspecified, try to break the
- * image up into strips that are approximately
- * STRIP_SIZE_DEFAULT bytes long.
- */
- 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);
-}
-
-/*
- * Return the number of bytes to read/write in a call to
- * 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.
- */
-uint64
-TIFFScanlineSize64(TIFF* tif)
-{
- static const char module[] = "TIFFScanlineSize64";
- TIFFDirectory *td = &tif->tif_dir;
- uint64 scanline_size;
- if (td->td_planarconfig==PLANARCONFIG_CONTIG)
- {
- if ((td->td_photometric==PHOTOMETRIC_YCBCR)&&
- (td->td_samplesperpixel==3)&&
- (!isUpSampled(tif)))
- {
- uint16 ycbcrsubsampling[2];
- 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;
- }
- 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
- {
- 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);
-}
-
-/*
- * Return the number of bytes required to store a complete
- * decoded and packed raster scanline (as opposed to the
- * I/O size returned by TIFFScanlineSize which may be less
- * if data is store as separate planes).
- */
-uint64
-TIFFRasterScanlineSize64(TIFF* tif)
-{
- static const char module[] = "TIFFRasterScanlineSize64";
- TIFFDirectory *td = &tif->tif_dir;
- uint64 scanline;
-
- scanline = _TIFFMultiply64(tif, td->td_bitspersample, td->td_imagewidth, module);
- if (td->td_planarconfig == PLANARCONFIG_CONTIG) {
- scanline = _TIFFMultiply64(tif, scanline, td->td_samplesperpixel, module);
- return (TIFFhowmany8_64(scanline));
- } else
- 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:
- */