[alsa-devel] Alsa MMAP emulation

Pharaoh . pharaoh137 at gmail.com
Wed Mar 5 18:30:33 CET 2008

On Wed, Mar 5, 2008 at 7:51 AM, Clemens Ladisch <clemens at ladisch.de> wrote:
> Mathieu Monney wrote:
>  > I'm trying to get working Alsa with the PortAudio library on an embedded
>  > device (Nokia N810). The problem is that the sound driver is not an
>  > hardware driver for Alsa but a plugin which deals with the internal DSP
>  > of the device. This plugin doesn't support mmap'ing at all. So I was
>  > wondering if it is possible to configure Alsa a way such PortAudio can
>  > use mmap'ing on my DSP plugin ? I saw there is a mmap_emulation flag but
>  > the problem is that it seems to be only available on HW driver and not
>  > on alsa plugins.
>  In alsa-lib 1.0.15, this function was moved into the mmap_emul plugin.

So, the original plugin need not be modified? mmap_emul plugin has to
be used on top of it?


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