Re: libnjb API info

On Mon, 26 Sep 2005, SukkoPera wrote:

> i. e.: I want to know if after NJB_Close () a jukebox can be reopened without
> doing NJB_Discover () again.

Should work fine. (Report if it doesn't!)

> And then: if I NJB_Discover () again, jukeboxes that I had already opened are
> still usable?

Yes, but do not open a jukebox that is already open then... It could be 
hard to avoid such a thing. If there are two entirely different devices 
you can of course determine that it is not the same device twice, but if 
there are say two NJB3:s it's problematic.

> And finally: what's the purpose of having NJB_open () + NJB_Capture () and
> NJB_Release () + NJB_Close ()?

It is mainly for historical reasons. The NJB1 implementation was closer to 
the protocol and did not abstract away the different operations involved 
in opening a Jukebox. Also, it is (protocol-wise) possible to query the 
device for basic stuff like the serial number without "capturing" it 
(display goes "host controlled" some way) but we haven't implemented that.

> Is there something that is supposed to be done
> inbetween these calls? Shouldn't the API hide the need to capture/release
> jukeboxes and provide a single function for opening/closing them?

Yeah could be good. But then we break the API backwards compatibility and 
get libnjb.so.6.0.0, so it must be ReallyGood(TM) not just 
LooksBetter(TM)... I don't quite know if it is that.

Linus


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