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 ALSOlibtiff(3T), TIFFReadEncodedTile(3T), TIFFReadRawTile(3T),
TIFFReadTile(3T), TIFFWriteEncodedTile(3T), TIFFWriteR-
awTile(3T), TIFFWriteTile(3T)
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