TIFFTILE(3TIFF)                                                TIFFTILE(3TIFF)



NAME
       TIFFTileSize, TIFFTileRowSize, TIFFVTileSize, TIFFDefaultTileSize,
       TIFFComputeTile, TIFFCheckTile, TIFFNumberOfTiles - 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 specified
       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 calculating 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 image.

DIAGNOSTICS
       None.

SEE ALSO
       TIFFReadEncodedTile(3TIFF), TIFFReadRawTile(3TIFF),
       TIFFReadTile(3TIFF), TIFFWriteEncodedTile(3TIFF),
       TIFFWriteRawTile(3TIFF), TIFFWriteTile(3TIFF), libtiff(3TIFF)

       Libtiff library home page: http://www.remotesensing.org/libtiff/



libtiff                        February 14, 1992               TIFFTILE(3TIFF)
