Re: [alsa-devel] Is snd_pcm_hw_params_set_period_time_near the same as sampling period?

Guilherme Longo wrote:

I am trying to understand a piece of a code I am studing . What does exactly the functions snd_pcm_hw_params_set_period_time_near sets?

The period time.

In my understand period time should be the time between 2 consecutive samples,

In ALSA, a period is the interval between consecutive interrupts from the sound card; this is the same as a fragment in OSS.

When the application tries to write/read more than than would be available, ALSA waits until the next period boundary before checking again.

HTH Clemens