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Stats interface - Some comments on specific stats

From: Hutton, Andrew <andrew.hutton@siemens-enterprise.com>
Date: Mon, 17 Sep 2012 17:05:19 +0000
To: Harald Alvestrand <harald@alvestrand.no>, "public-webrtc@w3.org" <public-webrtc@w3.org>
Message-ID: <9F33F40F6F2CD847824537F3C4E37DDF012D1AF0@MCHP04MSX.global-ad.net>
Hi Harald,

Some comments/questions on the proposal regarding.

1) My understanding of the spec is that the application is in full control of when to start/stop reporting, allowing the application to collect periodic reports or for the complete session. Can you confirm that the stats can be retrieved at the time the PeerConnection ends.

2) RTT should be the average round trip time over the reporting period can you confirm that this is the case.

3) The number of Silence suppressions in the RTP stream in a reporting period need to be included.

4) "Jitter" implies maximum jitter in the reporting period, is this correct?


Regards
Andy


> -----Original Message-----
> From: Harald Alvestrand [mailto:harald@alvestrand.no]
> Sent: 02 September 2012 08:45
> To: public-webrtc@w3.org
> Subject: Re: Stats interface - modelling on IndexedDB API?
> 
> Attaching the latest proposal after the changes.
> 
> On 08/30/2012 01:03 PM, Stefan Hakansson LK wrote:
> > On 08/30/2012 12:53 PM, Harald Alvestrand wrote:
> >> Hi,
> >>
> >> when implementing the Stats interface, I've concluded that it's not
> >> quite trivial to do it the way I'd written it up, due to the way
> WebKit
> >> hangs together.
> >>
> >> Would anyone mind terribly if I changed it around to do it the way
> the
> >> IndexedDB API does it?
> >>
> >> Basically, it seems to be:
> >>
> >> - Request returns a "request object" with a status and a result
> >> - When the data is ready, it fires a "success" event at the request
> >> object
> >> - The caller can then read the data out from the request object
> > I think the new approach you propose is better than the old one. It
> > aligns with e.g. IndexDB and FileReader.
> >
> >>
> >> http://www.w3.org/TR/IndexedDB/#idl-def-IDBRequest
> >>
> >> Seems a bit easier to get threaded through WebKit than the "simpler"
> >> method of "just" returning a complex structure in a callback.
> >>
> >>                        Harald
> >>
> >>
> >
> >
Received on Monday, 17 September 2012 17:05:48 GMT

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