Section: Misc. Reference Manual Pages (3TIFF)
Updated: December 16, 1991
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TIFFReadTile - read and decode a tile of data from an open
tsize_t TIFFReadTile(TIFF *tif, tdata_t buf, uint32 x, uint32 y, uint32 z, tsample_t sample)
Return the data for the tile
the specified coordinates. The data placed in
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
to find out the size (in bytes) of a tile buffer. The
parameters are always used by
parameter is used if the image is deeper than 1 slice (ImageDepth>1).
parameter is used only if data are organized in separate planes (PlanarConfiguration=2).
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
tag is opposite to the native machine bit order. 16- and 32-bit samples are
automatically byte-swapped if the file was written with a byte order opposite
to the native machine byte order,
returns -1 if it detects an error; otherwise the number of bytes in the
decoded tile is returned.
All error messages are directed to the
Libtiff library home page:
- RETURN VALUES
- SEE ALSO
linux.jgfs.net manual pages