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Re: [ACTION-59] Introduce lookup by id structures for streams and tracks.

From: Harald Alvestrand <harald@alvestrand.no>
Date: Mon, 05 Nov 2012 15:12:39 +0100
Message-ID: <5097C957.40602@alvestrand.no>
To: public-webrtc@w3.org
On 11/05/2012 03:02 PM, Martin Thomson wrote:
> On 5 November 2012 13:36, Adam Bergkvist <adam.bergkvist@ericsson.com> wrote:
>> B) Keep the possibility to use indices for looping (but not guarantee the
>> order)
> This is my preference.  Anything that returns sequence<MediaStream> is fine.
>
> I've seen too many instances of problems arising from custom
> interfaces to be happy with anything else.
>
> If you want to aggressively prevent the sort of programming errors
> that we discussed, randomize the order.  You'll excuse me if I think
> that's just a little excessive.
>
I like simplicity.
I'd like to introduce three operators on a MediaStream:

sequence<MediaStreamTrack> videoTracks()
sequence<MediaStreamTrack> audioTracks()
sequence<MediaStreamTrack> allTracks()

Text would say that the sequence is guaranteed to contain all the tracks 
present at the time of the respective type, and that there are no 
guarantees on their order.

Looping is then completely up to the application; if the app wants to 
sort them on id before looping, that's the application's business.
Received on Monday, 5 November 2012 14:13:23 GMT

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