pnmtopalm(1)                                                  General Commands Manual                                                 pnmtopalm(1)

NAME

       pnmtopalm - convert a portable anymap into a Palm pixmap

SYNOPSIS

       pnmtopalm [-verbose] [-depth N] [-maxdepth N] [-colormap] [-transparent color] [-offset]
       [-rle-compression|-scanline-compression] [pnmfile]

DESCRIPTION

       Reads a PNM image as input, from stdin or pnmfile.  Produces a Palm pixmap as output.

       Palm  pixmap files are either greyscale files 1, 2, or 4 bits wide, or color files 8 bits wide, so pnmtopalm automatically scales colors to
       have an appropriate maxval, unless you specify a depth or max depth.  Input files must have an appropriate number and set of colors for the
       selected  output constraints.  This often means that you should run the PNM image through ppmquant before you pass it to pnmtopalm.  Netpbm
       comes with several colormap files you can use with ppmquant for this purpose.  They are palmgray2.map (4 shades of gray for a depth of  2),
       palmgray4.map (16 shades of gray for a depth of 4), and palmcolor8.map (232 colors in default Palm colormap).

OPTIONS

       -verbose
              Display the format of the output file.

       -depth N
              Produce a file of depth N, where N must be either 1, 2, 4, 8, or 16.  Any depth greater than 1 will produce a version 1 or 2 bitmap.
              Because the default Palm 8-bit colormap is not grayscale, if the input is a grayscale or monochrome pixmap, the output will never be
              more  than  4 bits deep, regardless of the specified depth.  Note that 8-bit color works only in PalmOS 3.5 (and higher), and 16-bit
              direct color works only in PalmOS 4.0 (and higher).  However, the 16-bit direct color format is also  compatible  with  the  various
              PalmOS 3.x versions used in the Handspring Visor, so these images may also work in that device.

       -maxdepth N
              Produce  a  file  of  minimal depth, but in any case less than N bits wide.  If you specify 16-bit, the output will always be 16-bit
              direct color.

       -offset
              Fill in the nextDepthOffset field in the file header, to provide for multiple renditions of the pixmap in the same file.

       -colormap
              Build a custom colormap and include it in the output file.  This is not recommended by Palm,  for  efficiency  reasons.   Otherwise,
              pnmtopalm uses the default Palm colormap for color output.

       -transparent color
              Marks one particular color as fully transparent.  The format to specify the color is either (when for example orange) "1.0,0.5,0.0",
              where the values are floats between zero and one, or with the syntax "#RGB", "#RRGGBB" or "#RRRRGGGGBBBB" where R, G and B are hexa-
              decimal numbers.  This also makes the output bitmap a version 2 bitmap.  Transparency works only on Palm OS 3.5 and higher.

       -rle-compression
              Specifies  that  the  output  Palm bitmap will use the Palm RLE compression scheme, and will be a version 2 bitmap.  RLE compression
              works only with Palm OS 3.5 and higher.

       -scanline-compression
              Specifies that the output Palm bitmap will use the Palm scanline compression scheme, and will be a version 2 bitmap.  Scanline  com-
              pression works only in Palm OS 2.0 and higher.

SEE ALSO

       palmtopnm(1), ppmquant(1), pnm(5)

NOTES

       An additional compression format, packbits, was added with PalmOS 4.0.  This package should be updated to be able to generate that.

       Palm  pixmaps  may  contains multiple renditions of the same pixmap, in different depths.  To construct an N-multiple-rendition Palm pixmap
       with pnmtopalm, first construct renditions 1 through N-1 using the -offset option, then  construct  the  Nth  pixmap  without  the  -offset
       option.  Then concatenate the individual renditions together in a single file using cat.

AUTHORS

       This  program  was  originally written as ppmtoTbmp.c, by Ian Goldberg and George Caswell.  It was completely re-written by Bill Janssen to
       add color, compression, and transparency function.
       Copyright 1995-2001 by Ian Goldberg, George Caswell, and Bill Janssen.

                                                                  7 December 2000                                                     pnmtopalm(1)