Hi,
Basically pjmedia clock is controlled by sound device clock (or master
clock if you use null sound device). Sound device/master clock
interval is implisitly set by combination of its attributes, i.e:
samples per frame, channel count and clock rate.
For example:
samples per frame = 160
channel count = 1
clock rate = 16000
the interval will be: (160 / 1 / 16000) * 1000 = 10 ms
Please note that some sound devices may have clock drift, so the
interval is not exactly 10 ms, and even sometimes there is burst e.g:
clocked 5 times sequentially in a very short period then the next
clock comes after about 5*10 ms.
Regards,
nanang
On 03/09/2008, Liusheng liu_sx2006@hotmail.com wrote:
Hi,
Basically pjmedia clock is controlled by sound device clock (or master
clock if you use null sound device). Sound device/master clock
interval is implisitly set by combination of its attributes, i.e:
samples per frame, channel count and clock rate.
For example:
samples per frame = 160
channel count = 1
clock rate = 16000
the interval will be: (160 / 1 / 16000) * 1000 = 10 ms
Please note that some sound devices may have clock drift, so the
interval is not exactly 10 ms, and even sometimes there is burst e.g:
clocked 5 times sequentially in a very short period then the next
clock comes after about 5*10 ms.
Regards,
nanang
On 03/09/2008, Liusheng <liu_sx2006@hotmail.com> wrote:
> I want to the timer setting in PJSIP. we know when call set up, will call
> back the port get_frame and put_frame to get the voice data?
>
> but how to set the time interval between two times to call put frame or get
> frame?
>
> Thanks
>
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