[Gpsbabel-misc] Solved (at least partially): Error msg: Unsupported color depth (4)

[Gustav S. <gus...@gm...>]

Hi, all.

With some good pointers provided by Robert and Thomas, I have come to
something of a solution.


If I use the 'convert' utility, part of the Image Magick package, to
adjust the imput bitmap file, then I can make gpsbabel accept the file
in question.

$ convert CHRF-030.bmp -type TrueColor CHRF-030-tc.bmp
$ gpsbabel -i csv -f CHRF-030.csv -o garmin_gpi,bitmap=CHRF-030-tc.bmp
-F poi.gpi
$ # Converted to TrueColor, it was accepted!!

I also tried to convert the "TrueColor'ed" file to an optimized
version, but then gpsbabel refuses it again.
$ convert CHRF-030.bmp -type TrueColor CHRF-030-tc.bmp
$ convert CHRF-030-tc.bmp -type optimize CHRF-030-opt.bmp
$ gpsbabel -i csv -f CHRF-030.csv -o
garmin_gpi,bitmap=CHRF-030-opt.bmp -F poi.gpi
garmin_gpi: Unsupported color depth (4)!
$ # So I have to accept the large file which are a result to the
TrueColor conversion.

But that's a minor problem to me.


Conclusion:

It's not 100% solved (why and how can POILoader from Garmin handle to
input file?), but it's solved good enough for my purposes. Life goes
on. ;-)


Best regards
GuS



---------- Forwarded message ----------
From: Gustav Schaffter <gus...@gm...>
Date: Thu, Aug 6, 2009 at 17:49
Subject: Error msg: Unsupported color depth (4)
To: gps...@li...


Hi,

My first use of gpsbabel, my first problem and my first posting to the list. ;-)

When trying to build a garmin_gpi formatted output file, including an
output .bmp file, gpsbabel terminates with the error message:

garmin_gpi: Unsupported color depth (4)!


The same pair of files is successfully loaded into a poi.gpi file by
Garmin's Windows application POILoader. Since I run Linux, I'd like to
use gpsbabel to do the same. (And more. ;-)




Some details:

I have a .csv file plus a .bmp file that I have downloaded from
http://www.gpspassion.com/upload/poienfrance/RadarsSuisse.zip
It can be referenced from
http://www.gpspassion.com/forumsen/topic.asp?TOPIC_ID=72638

When unzipped, there is (among many other files) the two following
files that I will use to describe my problem:
../POI_Garmin_csv/CHRF-030.csv
../Icones_bmp/CHRF-030.bmp


My command:
$ gpsbabel -i csv -f CHRF-030.csv -o garmin_gpi,bitmap=CHRF-030.bmp -F poi.gpi
garmin_gpi: Unsupported color depth (4)!
$

I then tried to use convert from the ImageMagick suite, another
program that I'm not entirely familiar with. My intention was to
'convert' the bitmap file to eight bit depth, something that the
gpsbabel source code should support and accept. (Well, at least the
source code for version 1.3.4 claims that it should be OK.)

The command:
$ convert CHRF-030.bmp -depth 8 CHRF-030.d8.bmp

Not sure about the result, but had no error messages and the file was
created. It has the same size as the original CHRF-030.bmp file. I'm
not sure how I can verify the colour depth of a .bmp file. ;-)

Now I run the command:
$ gpsbabel -i csv -f CHRF-030.csv -o garmin_gpi,bitmap=CHRF-030.d8.bmp
-F poi.gpi
garmin_gpi: Unsupported color depth (4)!
# As you may notice, the error message is the same.
# In both cases, the output file is created with a zero size.

Being out of ideas, I turn to the mailing list and ask for help,
advice or at least a pointer in the right direction.



# Software versions at play:
$ uname -a
Linux gus-laptop 2.6.29-1-netbook #0array1 SMP Mon Feb 23 15:02:03 MST
2009 i686 GNU/Linux
$ gpsbabel -V

GPSBabel Version 1.3.6

$ convert -version
Version: ImageMagick 6.4.5 2009-06-04 Q16 OpenMP http://www.imagemagick.org
Copyright: Copyright (C) 1999-2008 ImageMagick Studio LLC


What more can I provide to support my quest for help? I'm not sure if
it's considered good list-iquette to attach the .bmp and .csv files,
but I will be more than happy to do so on specific request.


Best Regards
GuS