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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. |
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. |
-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.) |
ppm(5), ppmtoilbm(1) |
Copyright (C) 1989 by Jef Poskanzer. |