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QUERY

NAME

SYNOPSIS

DESCRIPTION

DIAGNOSTICS

SEE ALSO

NAME

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TIFFCurrentRow, TIFFCurrentStrip, TIFFCurrentTile,

TIFFCurrentDirectory, TIFFLastDirectory, TIFFFileno,

TIFFFileName, TIFFGetMode, TIFFIsTiled, TIFFIsByteSwapped,

TIFFIsUpSampled, TIFFIsMSB2LSB, TIFFGetVersion − query

routines

SYNOPSIS

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#include <tiffio.h>

uint32 TIFFCurrentRow(TIFF* tif)

tstrip_t TIFFCurrentStrip(TIFF* tif)

ttile_t TIFFCurrentTile(TIFF* tif)

tdir_t TIFFCurrentDirectory(TIFF* tif)

int TIFFLastDirectory(TIFF* tif)

int TIFFFileno(TIFF* tif)

char* TIFFFileName(TIFF* tif)

int TIFFGetMode(TIFF* tif)

int TIFFIsTiled(TIFF* tif)

int TIFFIsByteSwapped(TIFF* tif)

int TIFFIsUpSampled(TIFF* tif)

int TIFFIsMSB2LSB(TIFF* tif)

const char* TIFFGetVersion(void)

DESCRIPTION

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The following routines return status information about an

open <small>TIFF</small> file.

TIFFCurrentDirectory returns the index of the

current directory (directories are numbered starting at 0).

This number is suitable for use with the

TIFFSetDirectory routine.

TIFFLastDirectory returns a non-zero value if the

current directory is the last directory in the file;

otherwise zero is returned.

TIFFCurrentRow, TIFFCurrentStrip, and

TIFFCurrentTile, return the current row, strip, and

tile, respectively, that is being read or written. These

values are updated each time a read or write is done.

TIFFFileno returns the underlying file descriptor

used to access the <small>TIFF</small> image in the

filesystem.

TIFFFileName returns the pathname argument passed

to TIFFOpen or TIFFFdOpen.

TIFFGetMode returns the mode with which the

underlying file was opened. On <small>UNIX</small> systems,

this is the value passed to the open(2) system

call.

TIFFIsTiled returns a non-zero value if the image

data has a tiled organization. Zero is returned if the image

data is organized in strips.

TIFFIsByteSwapped returns a non-zero value if the

image data was in a different byte-order than the host

machine. Zero is returned if the TIFF file and local host

byte-orders are the same. Note that TIFFReadTile(),

TIFFReadStrip() and TIFFReadScanline() functions already

normally perform byte swapping to local host order if

needed.

TIFFIsUpSampled returns a non-zero value if image

data returned through the read interface routines is being

up-sampled. This can be useful to applications that want to

calculate I/O buffer sizes to reflect this usage (though the

usual strip and tile size routines already do this).

TIFFIsMSB2LSB returns a non-zero value if the

image data is being returned with bit 0 as the most

significant bit.

TIFFGetVersion returns an <small>ASCII</small>

string that has a version stamp for the <small>TIFF</small>

library software.

DIAGNOSTICS

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None.

SEE ALSO

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libtiff(3TIFF), TIFFOpen(3TIFF),

TIFFFdOpen(3TIFF)