Re: period/buffer bug on pmac ?

[Giuliano Pochini <pochini@shiny.it>]

On 15-Nov-2004 Clemens Ladisch wrote:
> danny@mailmij.org wrote:
>> In the process of fixing up the alsa output plugin of bmp a bit I've come
>> upon a weird problem. The mp3s I was playing played to fast, with a
>> audible click each few millisecond. This seemed to only happen when the
>> period size was not a power of 2 (the output plugin used to set
>> period_time). I've now calculated the period_size myself from the rate and
>> set it to the nearest power of 2. Which seems to work fine,
> 
> There is no general power-of-2 requirement in ALSA.  The pmac driver
> doesn't set a hardware constraint; if the hardware requires power-of-2
> periods, it's a bug in the driver.

There in so such constraint set in the driver indeed. I don't know
that hardware, but it seems (at least on my G4MDD which has a Snapper
chip) that po2 is required.


--
Giuliano.


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