freeswitch/libs/tiff-4.0.2/man/TIFFReadEncodedStrip.3tiff

.\" $Id: TIFFReadEncodedStrip.3tiff,v 1.2 2005-11-02 11:07:18 dron Exp $
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.\" Copyright (c) 1988-1997 Sam Leffler
.\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
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.if n .po 0
.TH TIFFReadEncodedStrip 3TIFF "October 15, 1995" "libtiff"
.SH NAME
TIFFReadEncodedStrip \- read and decode a strip of data from an open
.SM TIFF
file
.SH SYNOPSIS
.B "#include <tiffio.h>"
.sp
.BI "tsize_t TIFFReadEncodedStrip(TIFF *" tif ", tstrip_t " strip ", tdata_t " buf ", tsize_t " size ")"
.SH DESCRIPTION
Read the specified strip of data and place up to
.I size
bytes of decompressed information in the (user supplied) data buffer.
.SH NOTES
The value of
.I strip
is a ``raw strip number.''
That is, the caller must take into account whether or not the data are
organized in separate planes (\c
.IR PlanarConfiguration =2).
To read a full strip of data the data buffer should typically be at least as
large as the number returned by
.BR TIFFStripSize (3TIFF).
If the -1 passed in
.I size
parameter, the whole strip will be read. You should be sure you have enough
space allocated for the buffer.
.PP
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
.I 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,
.SH "RETURN VALUES"
The actual number of bytes of data that were placed in
.I buf
is returned;
.IR TIFFReadEncodedStrip
returns \-1 if an error was encountered.
.SH DIAGNOSTICS
All error messages are directed to the
.BR TIFFError (3TIFF)
routine.
.SH "SEE ALSO"
.BR TIFFOpen (3TIFF),
.BR TIFFReadRawStrip (3TIFF),
.BR TIFFReadScanline (3TIFF),
.BR libtiff (3TIFF)
.PP
Libtiff library home page:
.BR http://www.remotesensing.org/libtiff/