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 unoffi- cial 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, ilbm- toppm 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-olden- burg.de) 04 October 1993 ilbmtoppm(1)
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