Mariusz Bożewicz wrote:
> The first question is: what is a main idea of snd_pcm_hw_params_any
> function?

A snd_pcm_hw_params_t structure contains not only one configuration
but a set of possible configurations.  Calling snd_pcm_hw_params_any
initializes this structure to contain all possible configurations for
one specific device.

> Another question: I dont't feel what "channel" means. I am confused. I
>  think that 2 channels means stereo mode. Am I right?

Yes.


HTH
Clemens





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