Re: Synchronous versus asynchronous getSourceInfos

Just a quick comment:

Does the function need a failure callback? The current sync can't fail.


On Tue, Jun 4, 2013 at 7:30 PM, Justin Uberti <juberti@google.com> wrote:

> getSourceInfos is currently defined as synchronous [1] , but it will need
> to reach down into the media subsystem to enumerate capture devices.
> Previously, we have suggested that APIs like this should be async, to avoid
> blocking the JS thread while waiting for the low-level operation to
> complete. For getSourceInfos, I think this is still true - even if we
> pre-enumerate devices when the browser starts, it is possible that a page
> may make a request before the enumeration has completed, and will still
> need to block.
>
> Therefore I suggest that as part of the futures discussion, we consider
> whether getSourceInfos should be async, either
>
> void getSourceInfos(successCallback, failureCallback)
>
> or
>
> Future getSourceInfos()
>
> [1] http://dev.w3.org/2011/webrtc/editor/getusermedia.html#methods-1
>
>