TIFFTILE man page on BSDi

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TIFFTILE(3T)					     TIFFTILE(3T)

NAME
       TIFFTileSize, TIFFTileRowSize, TIFFVTileSize, TIFFDefault-
       TileSize,   TIFFComputeTile,    TIFFCheckTile,	 TIFFNum-
       berOfTiles - tile-related utility routines

SYNOPSIS
       #include <tiffio.h>
       void TIFFDefaultTileSize(TIFF* tif,  uint32*  tw,  uint32*
th)
       tsize_t TIFFTileSize(TIFF* tif)
       tsize_t TIFFTileRowSize(TIFF* tif)
       tsize_t TIFFVTileSize(TIFF* tif, uint32 nrows)
       ttile_t	TIFFComputeTile(TIFF*  tif,  uint32  x, uint32 y,
uint32 z, tsample_t sample)
       int TIFFCheckTile(TIFF* tif, uint32 x, uint32 y, uint32 z,
tsample_t sample)
       ttile_t TIFFNumberOfTiles(TIFF* tif)

DESCRIPTION
       TIFFDefaultTileSize  returns the pixel width and height of
       a reasonable-sized  tile;  suitable  for	 setting  up  the
       TileWidth  and  TileLength  tags.  If the tw and th values
       passed in are non-zero, then they are adjusted to  reflect
       any compression-specific requirements.  The returned width
       and height are constrained to be a multiple of  16  pixels
       to conform with the TIFF specification.

       TIFFTileSize  returns  the  equivalent  size for a tile of
       data as it would be returned in a call to TIFFReadTile  or
       as it would be expected in a call to TIFFWriteTile.

       TIFFVTileSize returns the number of bytes in a row-aligned
       tile with nrows of data.

       TIFFTileRowSize returns the number of bytes of  a  row  of
       data in a tile.

       TIFFComputeTile	returns the tile that contains the speci-
       fied coordinates.  A valid tile is always  returned;  out-
       of-range	 coordinate  values  are clamped to the bounds of
       the image.  The x and y parameters are always used in cal-
       culating	 a tile.  The z parameter is used if the image is
       deeper than 1 slice (ImageDepth>1).  The sample	parameter
       is  used	 only  if  data	 are organized in separate planes
       (PlanarConfiguration=2).

       TIFFCheckTile returns a non-zero	 value	if  the	 supplied
       coordinates  are	 within	 the bounds of the image and zero
       otherwise.  The x parameter is checked against  the  value
       of the ImageWidth tag.  The y parameter is checked against
       the value of the ImageLength  tag.   The	 z  parameter  is
       checked	against	 the  value  of	 the  ImageDepth  tag (if
       defined).  The sample parameter	is  checked  against  the
       value  of  the  SamplesPerPixel	parameter if the data are
       organized in separate planes.

       TIFFNumberOfTiles returns  the  number  of  tiles  in  the

			February 14, 1992			1

TIFFTILE(3T)					     TIFFTILE(3T)

       image.

DIAGNOSTICS
       None.

SEE ALSO
       libtiff(3T), TIFFReadEncodedTile(3T), TIFFReadRawTile(3T),
       TIFFReadTile(3T),  TIFFWriteEncodedTile(3T),   TIFFWriteR-
       awTile(3T), TIFFWriteTile(3T)

			February 14, 1992			2

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