# TIFFReadRawTile

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
DIAGNOSTICS
SEE ALSO

## NAME

| TIFFReadRawTile − return an undecoded tile of data from an open TIFF file

## SYNOPSIS

| #include <tiffio.h> tsize_t TIFFReadRawTile(TIFF *tif, ttile_t tile, tdata_t buf, tsize_t size)

## DESCRIPTION

Read the contents of the specified tile into the (user supplied) data buffer. 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 at least as large as the value returned by TIFFTileSize.

## RETURN VALUES

| The actual number of bytes of data that were placed in buf is returned; TIFFReadEncodedTile returns −1 if an error was encountered.

## DIAGNOSTICS

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

## SEE ALSO

| TIFFOpen(3TIFF), TIFFReadEncodedTile(3TIFF), TIFFReadTile(3TIFF), TIFFTileSize(3TIFF), libtiff(3TIFF) Libtiff library home page: http://www.simplesystems.org/libtiff/