Re: Query devices in a non-blocking fashion

[Giuliano Pochini <pochini@shiny.it>]

On 08-Dec-2003 Arve Knudsen wrote:
> Wether its done via the control or pcm interface, it'd be good to have a
> loose coupling between configuration and streams, so one could could access
> configuration space without locking a stream don't you think?

Yes, of course. Perhaps it can be done already with the current API. I
never investigated how the configuration process works, but I know the
driver can define rule functions to manage complex hw constraints.
Maybe you can change the snd_pcm_hardware_t structure according to the
new setting from those functions. I mean, the application calls
snd_pcm_hw_params_set_rate_near(96000);
The hw_rule function is called, which does pcmhw.channels_max=12;
Paul, Jaroslav, is it possible/legal ?


--
Giuliano.


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