Re: [Calise-testing] Feature request for calise

[Developement v. t. r. a. d. <cal...@li...>]

Il 17/07/2012 16:36, Developement versions test results and discussion 
ha scritto:
> Another little thing: it could be a nice idea to have calised paused 
> while the screen gets turned off (or it turns back because of power 
> management settings)...it is useless that calised goes on making 
> capture while the screen is locked in a "black state", if you 
> understand what i mean here. This is somehow similar to my other 
> feature request, or well, it is related, but it is not the same thing 
> i think.
> Hope it can be done :)
> Bye! Have a good time during this holidays!!

Yup, it's related. Actually it's more or less the same thing: know if 
same sort of signal is emitted by either XFCE power-manager, GNOME power 
manager, KDE power-manager and/or others (if that's the case, I hope, 
but I'm sure it's utopia, that they all send the same signal).
Anyway here you are, opened a feature request (id 3545122): 
https://sourceforge.net/tracker/?func=detail&aid=3545122&group_id=535571&atid=2175086
With that calise will be really effective.

For now, just consider that (about per-capture power usage on a average 
netbook):

    webcam ~2Wh
    cpu (max) ~10Wh
    capture duration ~1.5s
    cpu usage during capture <2%

    2Wh * (1.5s / 3600) + ((10Wh / 100) * 2) * (1.5s / 3600) =
    0.92*10^(-3) ~= 1 mWh

    NOTE: every value is slightly higher than what is.

It's pretty low... (hope I didn't make mistakes). So don't worry that 
much about power usage, of course, if you're able to pause calised and 
then resume do it, but even if you don't, power usage won't change that 
much.