ilbmtoppm(1) - man - phpman

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Convert an ILBM file to a PPM image.

Convert an ILBM file to a PPM image
ilbmtoppm {{path/to/file.ilbm}} > {{path/to/file.ppm}}
Use the specified color to "show through" where the image is transparent
ilbmtoppm {{-t|-transparent}} {{color}} {{path/to/file.ilbm}} > {{path/to/file.ppm}}
Ignore the chunk with the specified chunk ID
ilbmtoppm {{-ig|-ignore}} {{chunk_id}} {{path/to/file.ilbm}} > {{path/to/file.ppm}}
Store the input's transparency information to the specified PBM file
ilbmtoppm {{-m|-maskfile}} {{path/to/maskfile.pbm}} {{path/to/file.ilbm}} > {{path/to/file.ppm}}

ilbmtoppm(1)                           General Commands Manual                          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 col‐
              ormap and gives a warning.  With this option the colormap is scaled to 8 bits.

BUGS
       The multipalette PCHG BigLineChanges and Huffman decompression 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 AT informatik.de)





                                           04 October 1993                              ilbmtoppm(1)