Linux Commands Examples

A great documentation place for Linux commands

ilbmtoppm

convert an ILBM file into a portable pixmap


see also : ppmtoilbm

Synopsis

ilbmtoppm [-verbose] [-ignore<chunkID>] [-isham|-isehb] [-adjustcolors] [ILBMfile]


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examples

0
source 
            

  tifftopnm "$file"




  ;;






  *IFF*ILBM* )




  ilbmtoppm "$file"




  ;;






  *Lisp* )




  lispmtopgm "$file"




  *.iff | *.iff.* | *.ilbm | *.ilbm.* )




  ilbmtoppm "$file"




  ;;




  *.lispm | *.lispm.* )




  lispmtopgm "$file"
0
source 
            

  ilbm )




  ilbmtoppm "$file"




  ;;






  lispm )




  lispmtopgm "$file"




  ;;






  pcx )
0
source 
            

  tifftopnm "$file"




  ;;






  ilbm )




  ilbmtoppm "$file"




  ;;






  lispm )




  lispmtopgm "$file"

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.

references

Amiga ROM Kernel Reference Manual - Devices (3rd Ed.)
Addison Wesley, ISBN 0-201-56775-X


bugs

The multipalette PCHG BigLineChanges and Huffman decompression code is untested.


see also

ppm, ppmtoilbm


authors

Copyright (C) 1989 by Jef Poskanzer.
Modified October 1993 by Ingo Wilken (Ingo.Wilken[:at:]informatik[:dot:]uni-oldenburg.de)

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