Hi,
Sorry but what's the burst??
For testing I use two smartphones:
Where fewer frames are discarded
burst Max = 2 avg_burst = 1
Where
more frames are dropped
burst Max = 4 avg_burst = 2
clock drift (put
>get) are ok!
Tanks
2010/9/22 Nanang Izzuddin <nanang at pjsip.org>
Hi,
Basically the continuous frames discards show the existence of
high
burst (used to happen on wireless) and/or high clock drift
(put >
get). The sample cases I mentioned before are the common
cases of
burst and drift. Make sure about them first (disabling
PROGRESSIVE_DISCARD won't fix the discard problem if high burst and/or
high drift occur).
BR,
nanang
On Wed, Sep 22, 2010
at 5:04 PM, monelli.cosio at tiscali.it
<monelli.cosio at tiscali.it>
wrote:
> Hi,
>
> I disabled the PROGRESSIVE_DISCARD but the
frames are always
> discarded.
>
> This is the structure of
my application:
>
> Thread1: Network
> ------(put)------->
jitter buffer
>
> Frames arrive approximately every
> 20ms,
the test network is wireless, I have little delay and a lot of
>
bandwidth.
>
> Thread2: jitter buffer ------(get)------->
buffer audio
> ---------> play
>
> Every 20ms run the
"get".
> If there are frames, I send
> them to the audio buffer
would otherwise send an empty frame.
> If the
> audio buffer is
full, the frame is discarded.
>
> Why The jitter buffer
>
discards many frames??? The audio buffer if full must discard
>
packets!!!
> The jitter buffer is used to manage the delay ... But
with
> the wireless network I have no delay!!!
>
>
>
> 2010/9/21 Nanang Izzuddin
> <nanang at pjsip.org>
>
>
Hi,
>
> There can be some causes of massive
> frame
discards in JB, e.g:
> - on high burst network or bad audio
> device clock, you'll need larger
> JB frame max count, try
twice of
> burst level for safety, you can check
> the burst
level seen by JB in
> JB statistics.
> - high CPU load may
disturb audio device clock,
> underflows cause JB
> full,
hence many frames will get discarded, all
> the time.
>
> Otherwise, you can disable the PROGRESSIVE_DISCARD
> feature.
>
> BR,
> nanang
>
>
> On Tue, Sep 21,
2010 at 6:23 PM,
> monelli.cosio at tiscali.it
> <monelli.
cosio at tiscali.it> wrote:
> >
> Hello everyone,
> >
> > I use PJ-Media for my application. I only
> use the
> > jitter buffer.
> > The jitter buffer works fine on
>
Win32 (x86) and Linux
> > (x86).
> > The same code on the
ARM
> architecture (Windows Mobile 6
> > smartphones and
Linux on Nokia
> N900) works bad.
> >
> > The jitter
buffer
> > discards many
> frames and it is not normal.
> >
> > Do you have solutions or
> >
>
suggestions? Thanks
> >
> > Scimonelli Mattia
> >
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> Politecnico di
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