[pulseaudio-discuss] bluetooth: HFP | WBS | pollfd->revent POLLOUT not hit

[Georg Chini]

On 06.07.2018 08:43, Sathish Narasimman wrote:
> Hi Luiz,
>
> Yes, I am doing the polling. I an not changing that part of the code. 
> In which it is default in which NBS also uses.
>
> Thanks,
> Sathish N

The current code does not poll for POLLOUT in all situations,
see comment in the code. You should check if POLLOUT is
really set in pollfd->events. Actually a situation like you
describe is "normal" but should not impact sound quality,
again see comment in the code. You could try if it helps to
remove the "if (blocks_to_write > 0)" and set writable=false
unconditionally.

>
> On Wed, Jul 4, 2018 at 9:29 PM, Luiz Augusto von Dentz 
> <luiz.dentz at gmail.com <mailto:luiz.dentz at gmail.com>> wrote:
>
>     Hi Sathish,
>
>     On Mon, Jul 2, 2018 at 4:25 PM, Sathish Narasimman
>     <nsathish41 at gmail.com <mailto:nsathish41 at gmail.com>> wrote:
>     > Hi,
>     >
>     > I am trying to make WBS with PulseAudio. I am almost successful in
>     > establishing the connection and making a WBS traffic.
>     >
>     > But out of 10 attempts or sometimes the TX packets are not sent
>     due to
>     > POLLOUT is not reflected in the pollfd
>     >                 /* Test if the stream is writable */
>     >                 if (pollfd->revents & POLLOUT)
>     >                     writable = true;
>
>     Are you sure you are polling with POLLOUT?
>
>     > I would like to know what causes the stream as not writable.
>     > What are the connecting modules to resolve this?
>     > This happening only with WBS as NBS works good without any problem.
>     >
>     >
>     > Thanks,
>     > Sathish N
>     >
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>
>
>     -- 
>     Luiz Augusto von Dentz
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