TIFFReadTile(3TIFF)													       TIFFReadTile(3TIFF)

NAME

       TIFFReadTile - read and decode a tile of data from an open TIFF file

SYNOPSIS

       #include <tiffio.h>

       tsize_t TIFFReadTile(TIFF *tif, tdata_t buf, uint32 x, uint32 y, uint32 z, tsample_t sample)

DESCRIPTION

       Return  the data for the tile containing the specified coordinates. The data placed in buf are returned decompressed and, typically, in the
       native byte- and bit-ordering, but are otherwise packed (see further below). The buffer must be large enough to	hold  an  entire  tile	of
       data. Applications should call the routine TIFFTileSize to find out the size (in bytes) of a tile buffer. The x and y parameters are always
       used by TIFFReadTile.  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).

NOTES

       The  library  attempts to hide bit- and byte-ordering differences between the image and the native machine by converting data to the native
       machine order.  Bit reversal is done if the FillOrder tag is opposite to the native machine bit order. 16- and 32-bit samples are automati-
       cally byte-swapped if the file was written with a byte order opposite to the native machine byte order,

RETURN VALUES

       TIFFReadTile returns -1 if it detects an error; otherwise the number of bytes in the decoded tile is returned.

DIAGNOSTICS

       All error messages are directed to the TIFFError(3TIFF) routine.

SEE ALSO

       TIFFCheckTile(3TIFF), TIFFComputeTile(3TIFF), TIFFOpen(3TIFF), TIFFReadEncodedTile(3TIFF), TIFFReadRawTile(3TIFF), libtiff(3TIFF)

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

libtiff 							 December 16, 1991					       TIFFReadTile(3TIFF)