tiffreadencodedtile(3t) [redhat man page]

TIFFReadEncodedTile(3T) 												   TIFFReadEncodedTile(3T)

NAME

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

SYNOPSIS

       #include <tiffio.h>
       int TIFFReadEncodedTile(TIFF* tif, u_long tile, u_char* buf, u_long 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 automat-
       ically 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(3T) routine.

SEE ALSO

       libtiff(3T), TIFFOpen(3T), TIFFReadRawTile(3T), TIFFReadTile(3T)

								 October 15, 1995					   TIFFReadEncodedTile(3T)

TIFFReadEncodedTile(3tiff)				 Introduction to Library Functions				TIFFReadEncodedTile(3tiff)

NAME

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

SYNOPSIS

       #include <tiffio.h>
       int TIFFReadEncodedTile(TIFF* tif, u_long tile, u_char* buf,
       u_long size)

DESCRIPTION

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

EXTENDED DESCRIPTION

       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 num-
       ber. To read a full tile of data, the data buffer should typically be at least as large as the value returned by TIFFTileSize(3tiff).

       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 performed if the FillOrder tag is opposite to the native machine bit order. 16- and 32-bit samples are auto-
       matically byte-swapped if the file was written with a byte order opposite to the native machine byte order.

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

RETURN VALUES

       Returns the actual number of bytes of data that were placed in buf. Returns -1 if an error was encountered.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWTiff			   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |External			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       libtiff(3), TIFFOpen(3tiff), TIFFReadRawTile(3tiff), TIFFReadTile(3tiff)

NOTES

       This man page was originally written by Sam Leffler. Updated by Breda McColgan, Sun Microsystems Inc., 2004.

SunOS 5.10							    05 Apr 2004 					TIFFReadEncodedTile(3tiff)