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GNU/Linux |
CentOS 5.2 |
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ilbmtoppm(1) |
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ilbmtoppm - convert an ILBM file into a PPM image
ilbmtoppm [-verbose] [-ignore<chunkID>] [-isham|-isehb] [-adjustcolors] [ILBMfile]
This program is part of Netpbm(1).
ilbmtoppm reads an IFF ILBM file as input and produces a PPM image as output. ilbmtoppm can handle the following ILBM types:
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Normal ILBMs with 1-16 planes. | ||
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Amiga Extra_Halfbrite (EHB) | ||
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Amiga HAM with 3-16 planes. | ||
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24 bit. | ||
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Multiplatte (normal or HAM) pictures. | ||
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Color map (BMHD + CMAP chunk only, nPlanes = 0). | ||
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Unofficial direct color. 1-16 planes for each color component. |
ilbmtoppm uses these ILBM chunks: BMHD, CMAP, CAMG (only HAM & EHB flags used), PCHG, BODY unofficial DCOL chunk to identify direct color ILBM. It ignores these chunks: GRAB, DEST, SPRT, CRNG, CCRT, CLUT, DPPV, DRNG, EPSF. It ignores, but displays in verbose mode, these: NAME, AUTH, (c), ANNO, DPI. It skips chunks whose type it doesn’t recognize.
-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 are 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
ppmtoilbm(1), ppm(1)
Copyright (C) 1989 by Jef Poskanzer.
Modified October 1993 by Ingo Wilken (Ingo.Wilken@informatik.uni-oldenburg.de)
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ilbmtoppm(1) | |