[alsa-devel] Difference between boundary and buffer_size

[Clemens Ladisch]

Alan Young wrote:
> there are always initialized to the same value.

No.  Have a look into /proc/asound/cardX/pcm0p/sub0/hw_params.

> In what circumstance might they be different?

Always.

The boundary value is an integer multiple of the buffer size.  It's used
to allow computing the difference of two pointer values even if that
difference is larger than the buffers size.


Regards,
Clemens