[haiku-development] Re: [USB] What is the right way to feed queue_isochronous with audio data?
- From: "François Revol" <revol@xxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Sat, 23 Jan 2010 01:02:56 +0100 CET
> Hi again
>
> > Note that isochronous transfers are only implemented in UHCI. OHCI
> > as
> > well as EHCI don't support them.
>
> To clarify: our OHCI and EHCI host controller drivers do not support
> isochronous transfers because it's not implemented. OHCI and EHCI of
> course do also describe isochronous transfers. The OHCI
> implementation
> should be fairly simple, but in EHCI you have a few more
> complications,
> especially when it comes to split transfers for USB 1.1 support.
> Since
> there's comparably little hardware that uses isochronous transfers at
> all it has never really been high priority for me.
well, about all webcams except mine, including I think the UVC ones.
François.
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