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<html>
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<head>
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<meta name="generator" content="groff -Thtml, see www.gnu.org">
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<meta name="Content-Style" content="text/css">
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<title>QUERY</title>
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</head>
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<body>
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QUERY
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NAME
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SYNOPSIS
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DESCRIPTION
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DIAGNOSTICS
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SEE ALSO
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NAME
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TIFFCurrentRow, TIFFCurrentStrip, TIFFCurrentTile,
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TIFFCurrentDirectory, TIFFLastDirectory, TIFFFileno,
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TIFFFileName, TIFFGetMode, TIFFIsTiled, TIFFIsByteSwapped,
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TIFFIsUpSampled, TIFFIsMSB2LSB, TIFFGetVersion − query
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routines
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SYNOPSIS
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#include <tiffio.h>
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uint32 TIFFCurrentRow(TIFF* tif)
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tstrip_t TIFFCurrentStrip(TIFF* tif)
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ttile_t TIFFCurrentTile(TIFF* tif)
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tdir_t TIFFCurrentDirectory(TIFF* tif)
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int TIFFLastDirectory(TIFF* tif)
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int TIFFFileno(TIFF* tif)
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char* TIFFFileName(TIFF* tif)
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int TIFFGetMode(TIFF* tif)
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int TIFFIsTiled(TIFF* tif)
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int TIFFIsByteSwapped(TIFF* tif)
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int TIFFIsUpSampled(TIFF* tif)
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int TIFFIsMSB2LSB(TIFF* tif)
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const char* TIFFGetVersion(void)
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DESCRIPTION
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cols="2" cellspacing="0" cellpadding="0">
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The following routines return status information about an
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open <small>TIFF</small> file.
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TIFFCurrentDirectory returns the index of the
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current directory (directories are numbered starting at 0).
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This number is suitable for use with the
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TIFFSetDirectory routine.
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TIFFLastDirectory returns a non-zero value if the
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current directory is the last directory in the file;
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otherwise zero is returned.
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TIFFCurrentRow, TIFFCurrentStrip, and
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TIFFCurrentTile, return the current row, strip, and
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tile, respectively, that is being read or written. These
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values are updated each time a read or write is done.
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TIFFFileno returns the underlying file descriptor
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used to access the <small>TIFF</small> image in the
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filesystem.
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TIFFFileName returns the pathname argument passed
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to TIFFOpen or TIFFFdOpen.
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TIFFGetMode returns the mode with which the
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underlying file was opened. On <small>UNIX</small> systems,
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this is the value passed to the open(2) system
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call.
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TIFFIsTiled returns a non-zero value if the image
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data has a tiled organization. Zero is returned if the image
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data is organized in strips.
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TIFFIsByteSwapped returns a non-zero value if the
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image data was in a different byte-order than the host
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machine. Zero is returned if the TIFF file and local host
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byte-orders are the same. Note that TIFFReadTile(),
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TIFFReadStrip() and TIFFReadScanline() functions already
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normally perform byte swapping to local host order if
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needed.
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TIFFIsUpSampled returns a non-zero value if image
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data returned through the read interface routines is being
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up-sampled. This can be useful to applications that want to
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calculate I/O buffer sizes to reflect this usage (though the
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usual strip and tile size routines already do this).
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TIFFIsMSB2LSB returns a non-zero value if the
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image data is being returned with bit 0 as the most
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significant bit.
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TIFFGetVersion returns an <small>ASCII</small>
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string that has a version stamp for the <small>TIFF</small>
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library software.
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DIAGNOSTICS
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cols="2" cellspacing="0" cellpadding="0">
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None.
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SEE ALSO
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cols="2" cellspacing="0" cellpadding="0">
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libtiff(3TIFF), TIFFOpen(3TIFF),
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TIFFFdOpen(3TIFF)
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</body>
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</html>
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