Manual Reference Pages  - ilbmtoppm (1)

NAME

ilbmtoppm - convert an ILBM file into a portable pixmap

CONTENTS

Synopsis
Description
Options
Authors

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 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@informatik.uni-oldenburg.de)


ilbmtoppm (1) 04 October 1993
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