forked from Mirrors/freeswitch
143 lines
4.0 KiB
Groff
143 lines
4.0 KiB
Groff
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.\" $Id: tiffsv.1,v 1.3 2005-11-02 11:07:19 dron Exp $
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.\"
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.\" Copyright (c) 1988-1997 Sam Leffler
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.\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
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.\"
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.\" Permission to use, copy, modify, distribute, and sell this software and
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.\" its documentation for any purpose is hereby granted without fee, provided
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.\" that (i) the above copyright notices and this permission notice appear in
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.\" all copies of the software and related documentation, and (ii) the names of
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.\" Sam Leffler and Silicon Graphics may not be used in any advertising or
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.\" publicity relating to the software without the specific, prior written
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.\" permission of Sam Leffler and Silicon Graphics.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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.\" EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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.\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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.\"
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.\" IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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.\" ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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.\" OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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.\" WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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.\" LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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.\" OF THIS SOFTWARE.
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.\"
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.if n .po 0
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.TH TIFFSV 1 "September 20, 2005" "libtiff"
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.SH NAME
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tiffsv \- save an image from the framebuffer in a
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.SM TIFF
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file (Silicon Graphics version)
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.SH SYNOPSIS
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.B tiffsv
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[
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.I options
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]
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.I output.tif
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[
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.I "x1 x2 y1 y2"
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]
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.SH DESCRIPTION
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.I tiffsv
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saves all or part of the framebuffer in a file using the
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Tag Image File Format, Revision 6.0.
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By default, the image is saved with data samples packed (\c
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.IR PlanarConfiguration =1),
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compressed with the Lempel-Ziv & Welch algorithm (\c
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.IR Compression =5),
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and with each strip no more than 8 kilobytes.
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These characteristics can be overridden, or explicitly specified
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with the options described below.
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.SH OPTIONS
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.TP
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.B \-b
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Save the image as a greyscale image
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as if it were processed by
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.IR tiff2bw (1).
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This option is included for compatibility with the standard
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.IR scrsave (6D)
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program.
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.TP
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.B \-c
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Specify the compression to use for data written to the output file:
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.B none
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for no compression,
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.B packbits
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for PackBits compression,
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.B jpeg
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for baseline JPEG compression,
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.B zip
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for Deflate compression,
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and
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.B lzw
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for Lempel-Ziv & Welch compression (default).
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.IP
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.SM LZW
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compression can be specified together with a
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.I predictor
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value.
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A predictor value of 2 causes
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each scanline of the output image to undergo horizontal
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differencing before it is encoded; a value
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of 1 forces each scanline to be encoded without differencing.
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LZW-specific options are specified by appending a ``:''-separated
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list to the ``lzw'' option; e.g.
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.B "\-c lzw:2"
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for
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.SM LZW
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compression with horizontal differencing.
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.TP
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.B \-p
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Specify the planar configuration to use in writing image data.
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By default,
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.I tiffsv
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will create a new file with the data samples packed contiguously.
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Specifying
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.B "\-p contig"
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will force data to be written with multi-sample data packed
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together, while
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.B "\-p separate"
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will force samples to be written in separate planes.
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.TP
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.B \-r
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Specify the number of rows (scanlines) in each strip of data
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written to the output file.
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By default,
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.I tiffsv
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attempts to set the rows/strip
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that no more than 8 kilobytes of data appear in a strip.
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.SH NOTE
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Except for the use of
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.SM TIFF,
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this program is equivalent to the standard
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.I scrsave
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program.
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This means, for example, that you can use it in conjunction with
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the standard
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.IR icut
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program simply by creating a link called
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.IR scrsave ,
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or by creating a shell script called
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.I scrsave
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that invokes
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.I tiffgt
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with the appropriate options.
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.SH BUGS
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If data are saved compressed and in separate planes, then the
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rows in each strip is silently set to one to avoid limitations
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in the
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.BR libtiff (3TIFF)
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library.
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.SH "SEE ALSO"
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.BR scrsave (6D)
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.BR pal2rgb (1),
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.BR tiffdump (1),
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.BR tiffgt (1),
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.BR tiffinfo (1),
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.BR tiffcp (1),
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.BR tiffmedian (1),
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.BR libtiff (3TIFF)
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.PP
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Libtiff library home page:
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.BR http://www.remotesensing.org/libtiff/
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