TIFFReadRawTile(3T) UNIX System V(June 18, 1991) TIFFReadRawTile(3T)
NAME
TIFFReadRawTile - return the undecoded contents of a tile from an open
TIFF file
SYNOPSIS
#include <tiffio.h>
int TIFFReadRawTile(TIFF* tif, uint tile, uchar* buf, uint size)
DESCRIPTION
Return the contents of the specified tile of data into the (user
supplied) data buffer. The actual number of bytes of data that were
placed in buf is returned; TIFFReadEncodedTile() returns -1 if an error
was encountered. Note that the value of tile is a ``raw tile number.''
That is, the caller must take into account whether or not the data is
organized in separate planes (PlanarConfiguration=2). TIFFComputeTile()
automatically does this when converting an (x,y,z,sample) coordinate
quadruple to a tile number. To read a full tile of data the data buffer
should typically be as large as the value returned by TIFFTileSize().
DIAGNOSTICS
All error messages are directed to the TIFFError(3T) routine.
SEE ALSO
intro(3T), TIFFOpen(3T), TIFFReadEncodedTile(3T), TIFFReadTile(3T)
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