Manual Reference Pages - TIFFREADENCODEDTILE (3)
TIFFReadEncodedTile - read and decode a tile of data from an open
int TIFFReadEncodedTile(TIFF *tif, ttile_t tile, tdata_t buf, tsize_t size)
Read the specified tile of data and place up to
size bytes of decompressed information in the (user supplied) data buffer.
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 (
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
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
automatically byte-swapped if the file was written with a byte order opposite
to the native machine byte order,
The actual number of bytes of data that were placed in
buf is returned;
TIFFReadEncodedTile returns -1 if an error was encountered.
All error messages are directed to the
Libtiff library home page:
|libtiff ||TIFFREADENCODEDTILE (3TIFF) ||October 13, 2006 |
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