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TIFFReadRawTile
TIFFReadRawTile
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
DIAGNOSTICS
SEE ALSO
NAME
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TIFFReadRawTile − return an undecoded tile of data
from an open TIFF file
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SYNOPSIS
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#include <tiffio.h>
tsize_t TIFFReadRawTile(TIFF *tif,
ttile_t tile, tdata_t buf,
tsize_t size)
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DESCRIPTION
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Read the contents of the specified tile into the (user
supplied) data buffer. Note that the value of tile is
a ‘‘raw tile number.’’ That is, the
caller must take into account whether or not the data is
organized in separate planes (PlanarConfiguration=2).
TIFFComputeTile automatically does this when
converting an (x,y,z,sample) coordinate quadruple to a tile
number. To read a full tile of data the data buffer should
typically be at least as large as the value returned by
TIFFTileSize.
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RETURN VALUES
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The actual number of bytes of data that were placed in
buf is returned; TIFFReadEncodedTile returns
−1 if an error was encountered.
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DIAGNOSTICS
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All error messages are directed to the
TIFFError(3TIFF) routine.
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SEE ALSO
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TIFFOpen(3TIFF),
TIFFReadEncodedTile(3TIFF),
TIFFReadTile(3TIFF), TIFFTileSize(3TIFF),
libtiff(3TIFF)
Libtiff library home page:
http://www.simplesystems.org/libtiff/
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