TIFFReadEncodedStrip(3T) UNIX System V(May 2, 1990) TIFFReadEncodedStrip(3T)
NAME
TIFFReadEncodedStrip - read and decode a strip from an open TIFF file
SYNOPSIS
#include <tiffio.h>
int TIFFReadEncodedStrip(TIFF* tif, uint strip, uchar* buf, uint size)
DESCRIPTION
Read the specified strip of data and place size bytes of decompressed
information in the (user supplied) data buffer. The actual number of
bytes of data that were placed in buf is returned; TIFFReadEncodedStrip()
returns -1 if an error was encountered.
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 RowsPerStrip times the number
returned by TIFFScanlineSize().
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 always done if the FillOrder tag is opposite to
the native machine bit order. Byte swapping of 16- and 32-bit samples is
automatically done when Compression=1 (``no compression''), but otherwise
is left to the decompression algorithms (which should generate
decompressed data in the native byte ordering of the machine).
DIAGNOSTICS
All error messages are directed to the TIFFError(3T) routine.
SEE ALSO
intro(3T), TIFFOpen(3T), TIFFReadRawStrip(3T), TIFFReadScanline(3T)
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