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Re: Using tracks instead of streams

From: Cullen Jennings <fluffy@iii.ca>
Date: Tue, 12 Nov 2013 15:26:13 +0800
Cc: "public-webrtc@w3.org" <public-webrtc@w3.org>
Message-Id: <A5A5E599-F14B-482E-8875-87F60816C7E1@iii.ca>
To: Martin Thomson <martin.thomson@gmail.com>

yah, this looks good but not sure how receive side works to create the Doohickey 


On Nov 12, 2013, at 2:44 PM, Martin Thomson <martin.thomson@gmail.com> wrote:

> This isn't rocket science, though it requires a degree of API-inversion.
> 
> Yes, I know that I'm breaking the rules with respect to use of
> "attribute sequence<Foo>".  The rules are stupid.
> 
> partial interface RTCPeerConnection {
>  // the set of tracks we are sending
>  attribute sequence<Doohickey> sendTracks;
>  // the set of tracks we are (maybe) receiving
>  attribute sequence<Doohickey> receiveTracks;
> 
>  // add a track to the set of sending tracks
>  Doohickey addSendTrack(MediaStreamTrack track);
> 
>  // fired when a remote track manifests
>  attribute EventHandler? onremotetrack;
> };
> 
> partial interface MediaStreamTrack {
>  // the set of streams - i.e., synchronization contexts
>  // that this track belongs to
>  attribute sequence<MediaStream> streams;
> };
> 
> interface DooHickey {
>  readonly attribute MediaStreamTrack track;
>  // and some other stuff
>  attribute PriorityLevel priority;
>  attribute unsigned long maxBitrate;
>  // ellipsis
> };
> 
> All the stream-related mechanisms are removed from RTCPeerConnection.
> Nothing changes about the way that MSID and appID and those mechanisms
> work.
> 
> The reason that MediaStreamTrack gets an accessor for the set of
> streams that it belongs to is that if you are navigating this object
> mesh starting from RTCPeerConnection, you wouldn't otherwise be able
> to find the streams that exist.  Without that, worst case, the browser
> wouldn't have a strong reference it could use to manage garbage
> collection.
> 
> We are still talking about Doohickeys, so that interface has an ellipsis on it.
> 
Received on Tuesday, 12 November 2013 07:26:33 UTC

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