tiffreadencodedtile(3tiff) [centos man page]

TIFFReadEncodedTile(3TIFF)												TIFFReadEncodedTile(3TIFF)

NAME

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

SYNOPSIS

       #include <tiffio.h>

       int TIFFReadEncodedTile(TIFF *tif, ttile_t tile, tdata_t buf, tsize_t size)

DESCRIPTION

       Read the specified tile of data and place up to size bytes of decompressed information in the (user supplied) data buffer.

NOTES

       The  value  of tile is a ``raw tile number.''  That is, the caller must take into account whether or not the data are 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 be at least as large as the value returned by TIFFTileSize.

       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

       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), TIFFReadRawTile(3TIFF), TIFFReadTile(3TIFF), libtiff(3TIFF)

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

libtiff 							 October 13, 2006					TIFFReadEncodedTile(3TIFF)

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)