[alsa-devel] Alsa MMAP emulation

Clemens Ladisch clemens at ladisch.de
Wed Mar 5 16:51:15 CET 2008

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.


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