>I would like to fully understand the exact meaning of buffer_size and
>period_size and how can I compute the final latency in the full duplex
>processing from these variables.
period_size = frames between interrupts from the hardware
buffer size = total frames for the hardware buffer
max output latency = buffer_size
min output latency = buffer_size - period_size
max input latency = period_size + interrupt overhead
min input latency = 1 frame + interrupt overhead
the latency numbers assume:
a) the buffer is generally full
b) you process data 1 period at a time
c) your s/w keeps up with the h/w
d) its an average, computed across a period's worth of data
--p
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