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diff --git a/pamendian.html b/pamendian.html new file mode 100644 index 00000000..772ec293 --- /dev/null +++ b/pamendian.html @@ -0,0 +1,71 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<HTML><HEAD><TITLE>Pamendian User Manual</TITLE></HEAD> +<BODY> +<H1>pamendian</H1> +Updated: 16 March 2002 +<BR> +<A HREF="#index">Table Of Contents</A> + +<A NAME="lbAB"> </A> +<H2>NAME</H2> + +pamendian - reverse endianness of a Netpbm image + +<A NAME="lbAC"> </A> +<H2>SYNOPSIS</H2> + +<B>pamendian</B> + +<A NAME="lbAD"> </A> +<H2>DESCRIPTION</H2> + +<p>This program is part of <a href="index.html">Netpbm</a>. + +<p>All Netpbm formats that have samples in pure binary format with multiple +bytes are defined to have them in big endian (most significant byte first) +order. However, there exist variations on these formats, primarily developed +before official multibyte Netpbm formats existed, that are identical to +Netpbm formats in every respect except that samples are in little endian +(least signficant byte first) order. + +<P><B>pamendian</B> reverses the byte order of the sample to convert +between the two formats. If the input is true PAM, PGM, or PPM, the +output is the little endian variation on that format, and vice versa. + +<P>Programs that come with the Independent Jpeg Group's JPEG library +are known to use the little endian variation of PGM and PPM. + +<P>This program takes input only on Standard Input. Its output is +always on Standard Output. + +<P>You should never have to use this program with images generated by +programs in the Netpbm package or programs that use the Netpbm +libraries. If you do, that probably means something needs to be fixed +in those programs. The Netpbm converter for any graphics format that +represents numbers in little endian form should properly reverse the +bytes to create correct Netpbm output. + +<P>If you create a Netpbm image from a generic stream of samples, +using <B>rawtopgm</B> or <B>rawtoppm</B>, use options on those +programs to declare the endianness of your input, thus creating +correct endianness in your PGM or PPM output. + +<A NAME="lbAE"> </A> +<H2>SEE ALSO</H2> + +<B><A HREF="pamdepth.html">pamdepth</A></B>, +<B><A HREF="rawtopgm.html">rawtopgm</A></B>, +<B><A HREF="rawtoppm.html">rawtoppm</A></B>, +<B><A HREF="pnm.html">pnm</A></B> + +<HR> +<A NAME="Table Of Contents"> </A><H2>Table Of Contents</H2> +<UL> +<LI><A HREF="#lbAB">NAME</A> +<LI><A HREF="#lbAC">SYNOPSIS</A> +<LI><A HREF="#lbAD">DESCRIPTION</A> +<LI><A HREF="#lbAE">SEE ALSO</A> +</UL> +</BODY> +</HTML> + |