353 lines
11 KiB
C
353 lines
11 KiB
C
|
/*
|
||
|
|
* 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_t
|
||
|
|
TIFFComputeStrip(TIFF* tif, uint32_t row, uint16_t sample)
|
||
|
|
{
|
||
|
|
static const char module[] = "TIFFComputeStrip";
|
||
|
|
TIFFDirectory *td = &tif->tif_dir;
|
||
|
|
uint32_t 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_t)sample * td->td_stripsperimage;
|
||
|
|
}
|
||
|
|
return (strip);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Compute how many strips are in an image.
|
||
|
|
*/
|
||
|
|
uint32_t
|
||
|
|
TIFFNumberOfStrips(TIFF* tif)
|
||
|
|
{
|
||
|
|
TIFFDirectory *td = &tif->tif_dir;
|
||
|
|
uint32_t nstrips;
|
||
|
|
|
||
|
|
nstrips = (td->td_rowsperstrip == (uint32_t) -1 ? 1 :
|
||
|
|
TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip));
|
||
|
|
if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
|
||
|
|
nstrips = _TIFFMultiply32(tif, nstrips, (uint32_t)td->td_samplesperpixel,
|
||
|
|
"TIFFNumberOfStrips");
|
||
|
|
return (nstrips);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Compute the # bytes in a variable height, row-aligned strip.
|
||
|
|
*/
|
||
|
|
uint64_t
|
||
|
|
TIFFVStripSize64(TIFF* tif, uint32_t nrows)
|
||
|
|
{
|
||
|
|
static const char module[] = "TIFFVStripSize64";
|
||
|
|
TIFFDirectory *td = &tif->tif_dir;
|
||
|
|
if (nrows==(uint32_t)(-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_t ycbcrsubsampling[2];
|
||
|
|
uint16_t samplingblock_samples;
|
||
|
|
uint32_t samplingblocks_hor;
|
||
|
|
uint32_t samplingblocks_ver;
|
||
|
|
uint64_t samplingrow_samples;
|
||
|
|
uint64_t 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_t nrows)
|
||
|
|
{
|
||
|
|
static const char module[] = "TIFFVStripSize";
|
||
|
|
uint64_t m;
|
||
|
|
m=TIFFVStripSize64(tif,nrows);
|
||
|
|
return _TIFFCastUInt64ToSSize(tif, m, module);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Compute the # bytes in a raw strip.
|
||
|
|
*/
|
||
|
|
uint64_t
|
||
|
|
TIFFRawStripSize64(TIFF* tif, uint32_t strip)
|
||
|
|
{
|
||
|
|
static const char module[] = "TIFFRawStripSize64";
|
||
|
|
uint64_t bytecount = TIFFGetStrileByteCount(tif, strip);
|
||
|
|
|
||
|
|
if (bytecount == 0)
|
||
|
|
{
|
||
|
|
TIFFErrorExt(tif->tif_clientdata, module,
|
||
|
|
"%"PRIu64": Invalid strip byte count, strip %lu",
|
||
|
|
(uint64_t) bytecount,
|
||
|
|
(unsigned long) strip);
|
||
|
|
bytecount = (uint64_t) -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return bytecount;
|
||
|
|
}
|
||
|
|
tmsize_t
|
||
|
|
TIFFRawStripSize(TIFF* tif, uint32_t strip)
|
||
|
|
{
|
||
|
|
static const char module[] = "TIFFRawStripSize";
|
||
|
|
uint64_t m;
|
||
|
|
tmsize_t n;
|
||
|
|
m=TIFFRawStripSize64(tif,strip);
|
||
|
|
if (m==(uint64_t)(-1))
|
||
|
|
n=(tmsize_t)(-1);
|
||
|
|
else
|
||
|
|
{
|
||
|
|
n=(tmsize_t)m;
|
||
|
|
if ((uint64_t)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_t
|
||
|
|
TIFFStripSize64(TIFF* tif)
|
||
|
|
{
|
||
|
|
TIFFDirectory* td = &tif->tif_dir;
|
||
|
|
uint32_t 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_t m;
|
||
|
|
m=TIFFStripSize64(tif);
|
||
|
|
return _TIFFCastUInt64ToSSize(tif, m, module);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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_t
|
||
|
|
TIFFDefaultStripSize(TIFF* tif, uint32_t request)
|
||
|
|
{
|
||
|
|
return (*tif->tif_defstripsize)(tif, request);
|
||
|
|
}
|
||
|
|
|
||
|
|
uint32_t
|
||
|
|
_TIFFDefaultStripSize(TIFF* tif, uint32_t s)
|
||
|
|
{
|
||
|
|
if ((int32_t) s < 1) {
|
||
|
|
/*
|
||
|
|
* If RowsPerStrip is unspecified, try to break the
|
||
|
|
* image up into strips that are approximately
|
||
|
|
* STRIP_SIZE_DEFAULT bytes long.
|
||
|
|
*/
|
||
|
|
uint64_t scanlinesize;
|
||
|
|
uint64_t rows;
|
||
|
|
scanlinesize=TIFFScanlineSize64(tif);
|
||
|
|
if (scanlinesize==0)
|
||
|
|
scanlinesize=1;
|
||
|
|
rows= (uint64_t)STRIP_SIZE_DEFAULT / scanlinesize;
|
||
|
|
if (rows==0)
|
||
|
|
rows=1;
|
||
|
|
else if (rows>0xFFFFFFFF)
|
||
|
|
rows=0xFFFFFFFF;
|
||
|
|
s=(uint32_t)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_t
|
||
|
|
TIFFScanlineSize64(TIFF* tif)
|
||
|
|
{
|
||
|
|
static const char module[] = "TIFFScanlineSize64";
|
||
|
|
TIFFDirectory *td = &tif->tif_dir;
|
||
|
|
uint64_t scanline_size;
|
||
|
|
if (td->td_planarconfig==PLANARCONFIG_CONTIG)
|
||
|
|
{
|
||
|
|
if ((td->td_photometric==PHOTOMETRIC_YCBCR)&&
|
||
|
|
(td->td_samplesperpixel==3)&&
|
||
|
|
(!isUpSampled(tif)))
|
||
|
|
{
|
||
|
|
uint16_t ycbcrsubsampling[2];
|
||
|
|
uint16_t samplingblock_samples;
|
||
|
|
uint32_t samplingblocks_hor;
|
||
|
|
uint64_t samplingrow_samples;
|
||
|
|
uint64_t 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_t 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);
|
||
|
|
}
|
||
|
|
if (scanline_size == 0)
|
||
|
|
{
|
||
|
|
TIFFErrorExt(tif->tif_clientdata,module,"Computed scanline size is zero");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return(scanline_size);
|
||
|
|
}
|
||
|
|
tmsize_t
|
||
|
|
TIFFScanlineSize(TIFF* tif)
|
||
|
|
{
|
||
|
|
static const char module[] = "TIFFScanlineSize";
|
||
|
|
uint64_t m;
|
||
|
|
m=TIFFScanlineSize64(tif);
|
||
|
|
return _TIFFCastUInt64ToSSize(tif, m, module);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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_t
|
||
|
|
TIFFRasterScanlineSize64(TIFF* tif)
|
||
|
|
{
|
||
|
|
static const char module[] = "TIFFRasterScanlineSize64";
|
||
|
|
TIFFDirectory *td = &tif->tif_dir;
|
||
|
|
uint64_t 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_t m;
|
||
|
|
m=TIFFRasterScanlineSize64(tif);
|
||
|
|
return _TIFFCastUInt64ToSSize(tif, m, module);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* vim: set ts=8 sts=8 sw=8 noet: */
|
||
|
|
/*
|
||
|
|
* Local Variables:
|
||
|
|
* mode: c
|
||
|
|
* c-basic-offset: 8
|
||
|
|
* fill-column: 78
|
||
|
|
* End:
|
||
|
|
*/
|