ilbmtoppm - convert an ILBM file into a portable pixmap
ilbmtoppm [-verbose] [-ignore<chunkID>] [-isham|-isehb] [-adjustcolors] [ILBMfile]
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.
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.
-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.
The multipalette PCHG BigLineChanges and Huffman decompression code is untested.
Amiga ROM Kernel Reference Manual - Devices (3rd Ed.)
Addison Wesley, ISBN 0-201-56775-X
Copyright (C) 1989 by Jef Poskanzer.
Modified October 1993 by Ingo Wilken (Ingo.Wilken@informatik.uni-oldenburg.de)
|ilbmtoppm (1)||04 October 1993|