Audio and mpc5200 bestcomm tasks

[Grant Likely]

On Thu, May 21, 2009 at 12:52 PM, Jon Smirl <jonsmirl at gmail.com> wrote:
> ALSA really wants to dynamically know the address of the current DMA
> location while transfers are active. This is an important piece of
> implementing pause/resume. Pause doesn't work too well if there is 2s
> of music already queued. The work around is to know the sample rate
> and use the jiffy count to estimate how far into the buffer DMA has
> progressed. But that's not as accurate as just asking the DMA
> hardware.
>
> I poked around in the SRAM data and couldn't find the address. Is it
> there or can the Bestcomm tasks be modified to leave it somewhere
> visible?

It may be possible, but I haven't made any attempts at writing
bestcomm task code.  I've got no idea how difficult it would be.

g.

-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.