26 Sep
2012
26 Sep
'12
1:26 p.m.
Hi Scott
On 09/26/12 12:35, Scott Cutler wrote:
Slight correction/clarification to the below:
obviously, I am not
calling rtlsdr_set_center_freq when using rtl_tcp.exe. Instead, what I
see is that I can queue up a bunch of tuning calls, but they only kick
in at a very slow rate (1 hz). The effect is similar to when I used the
native libs, where rtlsdr_set_center_freq also took 1 s on the main thread.
I experienced the same maximum 1 hz tuning rate with rtl_tcp.
A quick look at the code shows a select() call in the command_worker
thread with a timeout set to 1s, but that doesn't explain the observed
behavior, because, as I understand select(), it should return as soon as
the UDP socket has data available (the timeout is used to allow the
thread to terminate when rtl_tcp shuts down). Nevertheless, my spidey
sense tells me this is the place to look...
Regards,
Simeon.