[PD] Working RPI Soundcards (was raspberry pi user experience)

[Simon Wise]

On 01/02/13 21:22, Alexandre Torres Porres wrote:
>> No, as nothing of current Pd can be hardware accelerated.
>> A fast GPU would only provide a benefit for Gem.
>
> Therefore, you can improve the performance of GEM on a RPI with an external
> video card, cool.

??? I don't think you could add an external card in any way that could provide
openGL. The built in GPU and its drivers don't provide openGL either, so no GEM
at all on the RPI (unless GEM is ported to ES, or some GL to ES bridge is 
written). The GPU parts of the hardware are closed source, so no hacking the 
driver or such possible either. Same applies to Beagleboards and other similar 
devices as well, they all use ES rather than GL.

>
> Sticking to the Pi issue, since it is so economic in CPU power, what are
> the efficiency benefits from audio cards more than just number of inputs
> and outputs?

They are needed on the Pi ... there is no analogue input and the built-in 
analogue out is very poor, hence you need some external USB card to do more
than use the stereo digital audio part of the HDMI output.

Simon