[alsa-devel] snd_pcm_hardware structure

[James Courtier-Dutton]

On 23 June 2010 21:26, Adish Kuvelker <adkuvi at gmail.com> wrote:
> yes...I know that my hardware will generate the interrupt and it will
> be at FIFO being half empty.
>

In that case the full buffer is 64, but you have the following parameters:
.period_bytes_min = 4,
.period_bytes_max = 32,
.periods_min = 2,
.periods_max = 2

A period is how far through the buffer one goes until an interrupt happens.
So, if the interrupt happens one each half FIFO, one has two periods per buffer.

Kind Regards

James