tif_strip.c File Reference

#include <precomp.h>

Include dependency graph for tif_strip.c:

Go to the source code of this file.

Functions
uint32	TIFFComputeStrip (TIFF *tif, uint32 row, uint16 sample)
uint32	TIFFNumberOfStrips (TIFF *tif)
uint64	TIFFVStripSize64 (TIFF *tif, uint32 nrows)
tmsize_t	TIFFVStripSize (TIFF *tif, uint32 nrows)
uint64	TIFFRawStripSize64 (TIFF *tif, uint32 strip)
tmsize_t	TIFFRawStripSize (TIFF *tif, uint32 strip)
uint64	TIFFStripSize64 (TIFF *tif)
tmsize_t	TIFFStripSize (TIFF *tif)
uint32	TIFFDefaultStripSize (TIFF *tif, uint32 request)
uint32	_TIFFDefaultStripSize (TIFF *tif, uint32 s)
uint64	TIFFScanlineSize64 (TIFF *tif)
tmsize_t	TIFFScanlineSize (TIFF *tif)
uint64	TIFFRasterScanlineSize64 (TIFF *tif)
tmsize_t	TIFFRasterScanlineSize (TIFF *tif)

Function Documentation

_TIFFDefaultStripSize()

uint32 _TIFFDefaultStripSize	(	TIFF *	tif,
		uint32	s
	)

Definition at line 223 of file tif_strip.c.

{
    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);
}

Referenced by _TIFFSetDefaultCompressionState().

TIFFComputeStrip()

uint32 TIFFComputeStrip	(	TIFF *	tif,
		uint32	row,
		uint16	sample
	)

Definition at line 36 of file tif_strip.c.

{
    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);
}

Referenced by gtStripContig(), and gtStripSeparate().

TIFFDefaultStripSize()

uint32 TIFFDefaultStripSize	(	TIFF *	tif,
		uint32	request
	)

Definition at line 217 of file tif_strip.c.

{
    return (*tif->tif_defstripsize)(tif, request);
}

TIFFNumberOfStrips()

uint32 TIFFNumberOfStrips

(

TIFF *

tif

)

Definition at line 59 of file tif_strip.c.

{
    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);
}

Referenced by TIFFReadDirectory(), and TIFFSetupStrips().

TIFFRasterScanlineSize()

tmsize_t TIFFRasterScanlineSize

(

TIFF *

tif

)

Definition at line 344 of file tif_strip.c.

{
    static const char module[] = "TIFFRasterScanlineSize";
    uint64 m;
    m=TIFFRasterScanlineSize64(tif);
    return _TIFFCastUInt64ToSSize(tif, m, module);
}

TIFFRasterScanlineSize64()

uint64 TIFFRasterScanlineSize64

(

TIFF *

tif

)

Definition at line 329 of file tif_strip.c.

{
    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));
}

Referenced by TIFFRasterScanlineSize().

TIFFRawStripSize()

tmsize_t TIFFRawStripSize	(	TIFF *	tif,
		uint32	strip
	)

Definition at line 164 of file tif_strip.c.

{
    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);
}

TIFFRawStripSize64()

uint64 TIFFRawStripSize64	(	TIFF *	tif,
		uint32	strip
	)

Definition at line 140 of file tif_strip.c.

{
    static const char module[] = "TIFFRawStripSize64";
    uint64 bytecount = TIFFGetStrileByteCount(tif, 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;
}

Referenced by TIFFRawStripSize().

TIFFScanlineSize()

tmsize_t TIFFScanlineSize

(

TIFF *

tif

)

Definition at line 314 of file tif_strip.c.

{
    static const char module[] = "TIFFScanlineSize";
    uint64 m;
    m=TIFFScanlineSize64(tif);
    return _TIFFCastUInt64ToSSize(tif, m, module);
}

Referenced by gtStripContig(), gtStripSeparate(), PredictorSetup(), TIFFReadDirectory(), and TIFFWriteCheck().

TIFFScanlineSize64()

uint64 TIFFScanlineSize64

(

TIFF *

tif

)

Definition at line 257 of file tif_strip.c.

{
    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);
        }
        if (scanline_size == 0)
        {
                TIFFErrorExt(tif->tif_clientdata,module,"Computed scanline size is zero");
                return 0;
        }
    return(scanline_size);
}

Referenced by _TIFFDefaultStripSize(), ByteCountLooksBad(), EstimateStripByteCounts(), TIFFScanlineSize(), and TIFFVStripSize64().

TIFFStripSize()

tmsize_t TIFFStripSize

(

TIFF *

tif

)

Definition at line 202 of file tif_strip.c.

{
    static const char module[] = "TIFFStripSize";
    uint64 m;
    m=TIFFStripSize64(tif);
    return _TIFFCastUInt64ToSSize(tif, m, module);
}

Referenced by gtStripContig(), gtStripSeparate(), TIFFFillStrip(), TIFFReadDirectory(), and TIFFWriteBufferSetup().

TIFFStripSize64()

uint64 TIFFStripSize64

(

TIFF *

tif

)

Definition at line 193 of file tif_strip.c.

{
    TIFFDirectory* td = &tif->tif_dir;
    uint32 rps = td->td_rowsperstrip;
    if (rps > td->td_imagelength)
        rps = td->td_imagelength;
    return (TIFFVStripSize64(tif, rps));
}

Referenced by _TIFFRewriteField(), TIFFReadDirectory(), TIFFStripSize(), TIFFWriteDirectoryTagLongLong8Array(), and TryChopUpUncompressedBigTiff().

TIFFVStripSize()

tmsize_t TIFFVStripSize	(	TIFF *	tif,
		uint32	nrows
	)

Definition at line 128 of file tif_strip.c.

{
    static const char module[] = "TIFFVStripSize";
    uint64 m;
    m=TIFFVStripSize64(tif,nrows);
        return _TIFFCastUInt64ToSSize(tif, m, module);
}

Referenced by TIFFReadEncodedStripGetStripSize().

TIFFVStripSize64()

uint64 TIFFVStripSize64	(	TIFF *	tif,
		uint32	nrows
	)

Definition at line 76 of file tif_strip.c.

{
    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));
}

Referenced by TIFFStripSize64(), TIFFVStripSize(), and TryChopUpUncompressedBigTiff().