[mkgmap-dev] Please try and report results of Huffman compression

Mon Jan 17 10:16:23 GMT 2022

Hi Ticker,

yes, thanks, that was the problem. The table width also depends on this and I didn't understand that so far.

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
Gesendet: Montag, 17. Januar 2022 10:44
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] Please try and report results of Huffman compression

Hi Gerd

I'm looking at GPXSee at the moment.

Significant to the problem lots of symbols:

The size of the tab1 offset into the symbol list is the same as the
size of the size (the 1+ bytes after the 8/symbol width), so, if more
than 127, it needs an extra byte.

Ticker

On Mon, 2022-01-17 at 04:26 +0000, Gerd Petermann wrote:
> Hi Ticker,
>
> yes, one byte at a time. Else we would need symbol width > 8, and
> Garmin doesn't use that for the unicode maps that I know.to
> I plan to contact the author of GPXsee, Martin Tůma. He seems to know
> much more than we do and maybe he is willing to help.
>
> Gerd

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