David,
I don't know that much about the internals of JACK but I do know this -
all serious Linux sound apps either use or are preparing to use JACK.
I've gotten to the point where I look for that in an application. If
it's not JACK enabled I just move on to something else.
Jan
On Tue, 2003-06-03 at 19:38, Paul Davis wrote:
> >Ah, I think you misunderstand me a little bit.. it's not that I am
> >trying to do anything different than usual, it's that I'm having trouble
> >with the basics. Specifically, the HOW-TOs that I have found all seem to
> >have a different way of writing and reading to/from the hardware buffer.
>
> thats because there are multiple ways to do it.
>
> >I have not, as of yet, been able to find a clear description of the core
> >concepts around writing and reading to the device. Also some recommend
> >one way, and then another HOWTO says not to do it that way.. it's all
> >rather confusing.
>
> if you want something that's not confusing, then JACK is your
> friend. it was specifically designed to cut away all the complexity
> and force you to write a well-designed application (and yes, its me
> who gets to define what well-designed means :)
>
> and no, you don't need to modify anything about your stock RH system
> to use JACK. the modifications are only needed if you want low
> latency, and such modifications would be needed to get this with just
> ALSA anyway. a jack client will run just as well as a native ALSA
> (better in some senses) when the jack server is run with equivalent
> parameters for the audio hardware.
>
> >For instance, I'm really not sure what size my buffer needs to be, if
> >there is a difference between the "hardware buffer" and the buffer in my
> >program, How "periods" work into all this, what's the difference between
> >hw and plughw, etc. Also each of the examples seems to configure the
> >hardware differently, which I find also odd..
>
> there are many ways of doing this too.
>
> >So to sum it up, the problem is not only that I'm new to ALSA, but that
> >I'm new to sound programming in general. Is there somewhere I can go to
> >learn the basics (at least enough to do capture and playback, beyond
> >that I'm not as interested)?
>
> if you're trying to learn sound programming, the last thing you want
> to be messing with is a hardware abstraction layer that can handle any
> audio h/w you can imagine. do yourself a favor and use jack
> instead. you can focus on audio programming rather than how to setup
> an audio interface. better yet, your application will talk to other
> jack-enabled applications if and when you want to.
>
> --p
>
>
>
>
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