Messages in this thread | | | Date | Fri, 17 Sep 1999 20:11:16 +0200 | From | Jamie Lokier <> | Subject | Re: Turning lucent winmodem into soundcard |
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Thomas Sailer wrote: > Put your driver into the kernel. I'd suggest an interface similar > to the current soundcard interface, plus ioctl's to handle > phone line specifics, like hangup etc.
I plan to do something much like that. An auxiliary streaming channel is required for things like dial/busy tone detection, because I've found (non-RT) user space scheduling isn't fine grained enough for simple "is there a tone now?" questions to distinguish different patterns. At least, according to certain country-specific parameters.
> The realtime guarantees should be ok when using what the kernel > already provides (mlock, sched_setscheduler), as long as it > can control when exactly a waveform gets transmitted. It > can do this by sending the right amount of zero samples > to the soundcard aka modem :)
Of course ;-)
-- Jamie
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