ilbmtoppm

 

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 ilbmtoppm(1)                                         ilbmtoppm(1)
 
 
 
NAME
        ilbmtoppm - convert an ILBM file into a portable pixmap
 
SYNOPSIS
        ilbmtoppm  [-verbose]  [-ignore<chunkID>]  [-isham|-isehb]
        [-adjustcolors] [ILBMfile]
 
DESCRIPTION
        Reads an IFF ILBM file  as  input.   Produces  a  portable
        pixmap as output.  Supported ILBM types are:
 
        Normal ILBMs with 1-16 planes.
 
        Amiga Extra_Halfbrite (EHB)
 
        Amiga HAM with 3-16 planes.
 
        24 bit.
 
        Multiplatte (normal or HAM) pictures.
 
        Color map (BMHD + CMAP chunk only, nPlanes = 0).
 
        Unofficial direct color.
               1-16 planes for each color component.
 
        Chunks used:
               BMHD, CMAP, CAMG (only HAM & EHB flags used), PCHG,
               BODY unofficial DCOL chunk to identify direct color
               ILBM
 
        Chunks ignored:
               GRAB,  DEST,  SPRT,  CRNG,  CCRT, CLUT, DPPV, DRNG,
               EPSF
 
        Other chunks (ignored but displayed in verbose mode):
               NAME, AUTH, (c), ANNO, DPI
 
        Unknown chunks are skipped.
 
OPTIONS
        -verbose
               Give some information about the ILBM file.
 
        -ignore <chunkID>
               Skip a chunk.  <chunkID> is the 4-letter IFF  chunk
               identifier of the chunk to be skipped.
 
        -isham | -isehb
               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).
 
        -adjustcolors
               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.
 
 BUGS
        The multipalette PCHG BigLineChanges  and  Huffman  decom­
        pression code is untested.
 
 REFERENCES
        Amiga ROM Kernel Reference Manual - Devices (3rd Ed.)
        Addison Wesley, ISBN 0-201-56775-X
 
SEE ALSO
        ppm(5), ppmtoilbm(1)
 
AUTHORS
        Copyright (C) 1989 by Jef Poskanzer.
        Modified  October  1993 by Ingo Wilken (Ingo.Wilken@infor­
        matik.uni-oldenburg.de)
 
 
 
 
 
                          04 October 1993             ilbmtoppm(1)

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