TIFFReadEncodedStrip - read and decode a strip of data from an open TIFF file
#include <tiffio.h> tmsize_t TIFFReadEncodedStrip(TIFF *tif, uint32 strip, void *buf, tmsize_t size)
TIFFReadEncodedStrip(3TIFF)
NAME
TIFFReadEncodedStrip - read and decode a strip of data from an open
TIFF file
SYNOPSIS
#include <tiffio.h>
tmsize_t TIFFReadEncodedStrip(TIFF *tif, uint32 strip, void *buf,
tmsize_t size)
DESCRIPTION
Read the specified strip of data and place up to size bytes of decom-
pressed information in the (user supplied) data buffer.
NOTES
The value of strip is a ``raw strip number.'' That is, the caller must
take into account whether or not the data are organized in separate
planes (PlanarConfiguration=2). To read a full strip of data the data
buffer should typically be at least as large as the number returned by
TIFFStripSize(3TIFF). If the -1 passed in size parameter, the whole
strip will be read. You should be sure you have enough space allocated
for the buffer.
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;
TIFFReadEncodedStrip returns -1 if an error was encountered.
DIAGNOSTICS
All error messages are directed to the TIFFError(3TIFF) routine.
SEE ALSO
TIFFOpen(3TIFF), TIFFReadRawStrip(3TIFF), TIFFReadScanline(3TIFF),
libtiff(3TIFF)
Libtiff library home page: http://www.simplesystems.org/libtiff/
libtiff October 15, 1995
TIFFReadEncodedStrip(3TIFF)