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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML><HEAD><TITLE>Ilbmtoppm User Manual</TITLE></HEAD> <BODY> <H1>ilbmtoppm</H1> Updated: 04 October 1993 <BR> <A HREF="#index">Table Of Contents</A> <H2>NAME</H2> ilbmtoppm - convert an ILBM file into a PPM image <H2 id="synopsis">SYNOPSIS</H2> <B>ilbmtoppm</B> [<B>-ignore</B><chunkID><B>]</B> [ <B>-isham</B> | <b>-isnotham</b> | <B>-isehb</B> | <b>-isnotehb</b> | <b>-isdeep</b> | <b>-isnotdeep</b> ] [<B>-cmaponly</B>] [<B>-adjustcolors</B>] [<b>-transparent </b><i>color</i>] [<b>-maskfile</b> <i>filename</i> [<B>-verbose</B>] [<I>ILBMfile</I>] <H2 id="description">DESCRIPTION</H2> <p>This program is part of <a href="index.html">Netpbm</a>. <p><b>ilbmtoppm</b> reads an IFF ILBM file as input and produces a PPM image as output. <b>ilbmtoppm</b> can handle the following ILBM types: <UL> <LI>Normal ILBMs with 1-16 planes. <LI>Amiga Extra_Halfbrite (EHB) <LI>Amiga HAM with 3-16 planes. <LI>24 bit. <LI>Multiplatte (normal or HAM) pictures. <LI>Color map (BMHD + CMAP chunk only, nPlanes = 0). <LI>Unofficial direct color. 1-16 planes for each color component. </UL> <P><B>ilbmtoppm</b> uses these ILBM chunks: BMHD, CMAP, CAMG (only HAM & EHB flags used), PCHG, BODY unofficial DCOL chunk to identify direct color ILBM. It ignores these chunks: GRAB, DEST, SPRT, CRNG, CCRT, CLUT, DPPV, DRNG, EPSF. It ignores, but displays in verbose mode, these: NAME, AUTH, (c), ANNO, DPI. It skips chunks whose type it doesn't recognize. <H2 id="options">OPTIONS</H2> <DL COMPACT> <DT><B>-verbose</B> <DD>Give some information about the ILBM file. <DT><B>-ignore</b> <i>chunkID</i> <DD>Skip a chunk. <i>chunkID</i> is the 4-letter IFF chunk identifier of the chunk to be skipped. <DT><B>-isham</b> | <b>-isehb</B> <DD>Treat the input file as a HAM or Extra_Halfbrite picture, even if these flags are not set in the CAMG chunk (or if there is no CAMG chunk). <dt><b>-cmaponly</b> <dd>With this option, <b>ilbmtoppm</b> generates a PPM of the ILBM's <em>color map</em>, not the image itself. <p><b>ilbmtoppm</b> does the same thing even without <b>-cmaponly</b> if the ILBM is a pure color map stream (it has a bitmap header with an <i>nplanes</i> value of zero or has no BODY chunk. <DT><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> <H2 id="limitations">LIMITATIONS</H2> <p>The multipalette PCHG BigLineChanges and Huffman decompression code is untested. <H2 id="references">REFERENCES</H2> Amiga ROM Kernel Reference Manual - Devices (3rd Ed.) Addison Wesley, ISBN 0-201-56775-X <H2 id="seealso">SEE ALSO</H2> <A HREF="ppmtoilbm.html">ppmtoilbm</A>, <A HREF="ppm.html">ppm</A> <H2 id="authors">AUTHORS</H2> Copyright (C) 1989 by Jef Poskanzer. <p>Modified October 1993 by Ingo Wilken (<A HREF="mailto:Ingo.Wilken@informatik.uni-oldenburg.de">Ingo.Wilken@informatik.uni-oldenburg.de</A>) <HR> <H2 id="index">Table Of Contents</H2> <UL> <LI><A HREF="#synopsis">SYNOPSIS</A> <LI><A HREF="#description">DESCRIPTION</A> <LI><A HREF="#options">OPTIONS</A> <LI><A HREF="#limitations">LIMITATIONS</A> <LI><A HREF="#references">REFERENCES</A> <LI><A HREF="#seealso">SEE ALSO</A> <LI><A HREF="#authors">AUTHORS</A> </UL> </BODY> </HTML>