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<H1>ilbmtoppm</H1>
Section: User Commands (1)<BR>Updated: 04 October 1993<BR><A HREF="#index">Index</A>
<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>
ilbmtoppm - convert an ILBM file into a portable pixmap
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<H2>SYNOPSIS</H2>
<B>ilbmtoppm</B>
[<B>-verbose</B>]
[<B>-ignore</B>&lt;chunkID&gt;<B>]</B>
[<B>-isham</B>|<B>-isehb</B>]
[<B>-adjustcolors</B>]
[<I>ILBMfile</I>]
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<H2>DESCRIPTION</H2>
Reads an IFF ILBM file as input.
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Produces a portable pixmap as output.
Supported ILBM types are:
<DL COMPACT>
<DT id="1">Normal ILBMs with 1-16 planes.<DD>
<DT id="2">Amiga Extra_Halfbrite (EHB)<DD>
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<DT id="3">Amiga HAM with 3-16 planes.<DD>
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<DT id="4">24 bit.<DD>
<DT id="5">Multiplatte (normal or HAM) pictures.<DD>
<DT id="6">Color map (BMHD + CMAP chunk only, nPlanes = 0).<DD>
<DT id="7">Unofficial direct color.<DD>
1-16 planes for each color component.
<DT id="8">Chunks used:<DD>
BMHD, CMAP, CAMG (only HAM &amp; EHB flags used), PCHG, BODY
unofficial DCOL chunk to identify direct color ILBM
<DT id="9">Chunks ignored:<DD>
GRAB, DEST, SPRT, CRNG, CCRT, CLUT, DPPV, DRNG, EPSF
<DT id="10">Other chunks (ignored but displayed in verbose mode):<DD>
NAME, AUTH, (c), ANNO, DPI
<DT id="11">Unknown chunks are skipped.<DD>
</DL>
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<H2>OPTIONS</H2>
<DL COMPACT>
<DT id="12"><B>-verbose</B>
<DD>
Give some information about the ILBM file.
<DT id="13"><B>-ignore &lt;chunkID&gt;</B>
<DD>
Skip a chunk. &lt;chunkID&gt; is the 4-letter IFF chunk identifier of the chunk
to be skipped.
<DT id="14"><B>-isham | -isehb</B>
<DD>
Treat the input file as a HAM or Extra_Halfbrite picture, even if these
flags or not set in the CAMG chunk (or if there is no CAMG chunk).
<DT id="15"><B>-adjustcolors</B>
<DD>
If all colors in the CMAP have a value of less then 16, ilbmtoppm assumes
a 4-bit colormap and gives a warning. With this option the colormap
is scaled to 8 bits.
</DL>
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<H2>BUGS</H2>
The multipalette PCHG BigLineChanges and Huffman decompression code is untested.
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<H2>REFERENCES</H2>
Amiga ROM Kernel Reference Manual - Devices (3rd Ed.)
<BR>
Addison Wesley, ISBN 0-201-56775-X
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<H2>SEE ALSO</H2>
<A HREF="/cgi-bin/man/man2html?5+ppm">ppm</A>(5), <A HREF="/cgi-bin/man/man2html?1+ppmtoilbm">ppmtoilbm</A>(1)
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<H2>AUTHORS</H2>
Copyright (C) 1989 by Jef Poskanzer.
<BR>
Modified October 1993 by Ingo Wilken (<A HREF="mailto:Ingo.Wilken@informatik.uni-oldenburg.de">Ingo.Wilken@informatik.uni-oldenburg.de</A>)
<P>
<P>
<P>
<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT id="16"><A HREF="#lbAB">NAME</A><DD>
<DT id="17"><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT id="18"><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT id="19"><A HREF="#lbAE">OPTIONS</A><DD>
<DT id="20"><A HREF="#lbAF">BUGS</A><DD>
<DT id="21"><A HREF="#lbAG">REFERENCES</A><DD>
<DT id="22"><A HREF="#lbAH">SEE ALSO</A><DD>
<DT id="23"><A HREF="#lbAI">AUTHORS</A><DD>
</DL>
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