[Pianod] Testing on v234

[Chris Greenman via Pianod]

I can provide non-scientifically tested results.   Last time I used the pi
on my boat with spotty cell coverage I did have 1 instance where I had to
reboot the pi but I can't say for sure what caused that.   I was in a rush
and couldn't investigate so easiest thing was to just reboot.   it might
have also been caused by something external to the PI.  What I CAN say is
that for the next 3 or so hours it worked flawlessly.  there were some
hiccups in the audio as if it had lost internet but it picked up where it
left off fairly quickly.   About the time you noticed the music had stopped
it starts up again.

That's about as much real world testing I've done with it.   I'll be racing
this week so I'll try it again, this time with a simpler hookup to the
internet.  Second wifi interface connecting directly to my cellphone
hotspot on 5ghz.  It eliminates at least one source of interference on the
2.4ghz band.  Before, I used a small travel router that connected on a
different channel to my phone.

On Sun, Aug 21, 2016 at 11:27 PM, Perette Barella via Pianod <
pianod at lists.deviousfish.com> wrote:

> Chris Greenman said of his Raspberry Pi with libav wiped and ffmpeg
> installed:
>
> Seems to be working fine.  I haven't tried any network stalls yet but it
> runs and i can control it.  I followed the instructions below to wipe out
> libav and install ffmpeg.
>
> https://www.assetbank.co.uk/support/documentation/install/
> ffmpeg-debian-squeeze/ffmpeg-debian-jessie/
>
>
> Awesome.  Glad to hear that’s doable and working… can you confirm that
> this fixes the hangs on network loss you were seeing?  I’d like to confirm
> my diagnosis of libav.
>
>
> On 2016年08月21日, at 14:09, Bruce M. Sheplan via Pianod <
> pianod at lists.deviousfish.com> wrote:
> On v234, After playing for a couple of hours ( ~2hrs? ) pianod crashed
> with the following in the log:
>
> pianod[15739]: segfault at 2c ip b56199cd sp bfa005a0 error 4 in
> libgstplayback.so[b560b000+68000]
>
>
> Seems like thats a gstreamer library though so maybe unrelated to pianod
>
>
> It does sound like it’s in the library.  I checked my IDE settings and
> turned on Guard Malloc, which catches lots of good stuff that causes
> intermittent problems.  It didn’t turn up anything, nor did a brief leak
> analysis.  I guess keep an eye on it, see if it recurs and if there’s a
> pattern to it.  Rare of frequent?  Predictable or intermittent?  Let us
> know what you see over time.
>
> I still need to look into why my Pi hangs up when using hw:1… whether it’s
> something peculiar to using the tone generator, or if it’s specific to my
> USB dongle.
>
>
> … and in other news…
> r236 has a fix to the ffmpeg code to calculate playpoint *before* freeing
> the packet the data comes out of, resulting in correct answers.  There’s
> also new #ifdefs for some of the new 3.1 API, with support for older stuff
> still present.  If I broke anything, let me know.
>
> There are other API changes in 3.1 too.  There is still a deprecation
> warning with 3.1 about using the ‘codec’ field in AVStream, but I’m waiting
> to hear what the Right Way is to replace this, since (among other issues)
> the documentation indicates I need to call a method that requires it.  So
> far, I’ve had two more-or-less same answers to a different question than
> what I asked.  On the positive side, though, they were coherent and three
> times more plentiful than libav’s help list, in just hours.
>
> Perette
>
>
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