[ gpsdrive ] No developer question, but a question about an older version of gpsdrive

[Joerg Ostertag]

Am Mittwoch, 17. Oktober 2007 21:42:04 schrieb Thomas Schönhütl:
> Hi all,
>
> I use gpsdrive-2.10pre2 

A little bit outdated, but if it works for you ....
Otherwise you might try gpsdrive-2.10pre4 ?


> on a Toshiba Libretto CT100 (266 MHz, 64 MB RAM, 
> 4GB CF-Card as IDE) running with Slackware. 

Sounds like a nice little combination.

> I use autogenerated routes 
> via maquest.de and convert the routes with a shellscript out of the
> webpage into a way-routename.txt and a way-routename.dsc for festival
> soundserver.

You learn new things every day ;-) I didn't know gpsdrive can handle it's 
own .dsc file for festival and routes ...

> This combination works quite good, I have speech output with directions
> and streetnames at all waypoints, really cool.

Thonse are the words we like to hear.

> There is only one fact I want to improve: Because of the slow processor,
> the speech output of the dsc-file is sometimes quite late. I mean the
> text comes near the waypoint and with the car the distance to the
> waypoint is too near to have time to react in the correct matter (turn
> left or right or change the highway).
>
> I found a file "speechout.c" in the sources where I found some
> configuration about the speech output. But I cannot interprete the code
> in the right way.

In gpsdrive.h you 'll find
#define ROUTEREACH (0.02+10*current.groundspeed/(3600*milesconv))

and in route.c:
      if (d <= ROUTEREACH || route.forcenext)

This should bring you one step closer...


> Is there a possibility to change the behaviour of gpsdrive in the way
> that the speechoutput comes earlier, let me say about 1000 m on highways
> and about 300 m in cities. So that I have enough time to react in a save
> way!?

For this gpsdrive would have to know if it's on a highway or in the city ...
but for now (gpsdrive-2.10pre4) the groundspeed is taken into calculation of 
this.

> Any help is appreciated and I thank you for your efforts!

I hope this helps. 
And if you're successfull; a patch and a description on how to do it is 
welcome.

-
Joerg