W3C home > Mailing lists > Public > public-media-capture@w3.org > May 2015

RE: [Exposed] attribute on our APIs

From: Mathieu Hofman <Mathieu.Hofman@citrix.com>
Date: Fri, 15 May 2015 20:50:20 +0000
To: Harald Alvestrand <harald@alvestrand.no>, "public-media-capture@w3.org" <public-media-capture@w3.org>
Message-ID: <3CD080DCDA030D47B8ED720F6B99FC81052F7A6D@SJCPEX01CL02.citrite.net>
Answering to myself here, I completely forgot about the ImageCapture API.
I think it would be useful for this API to be available in a worker and be able to transfer a MediaStream(Track) object to a worker through postMessage.

From: Mathieu Hofman
Sent: Friday, May 15, 2015 1:41 PM
To: Harald Alvestrand; public-media-capture@w3.org
Subject: RE: [Exposed] attribute on our APIs

Sorry for missing this earlier.

One use case I could see is processing of the media video track in a worker through a canvas element. Canvas can be manipulated in a worker through the CanvasProxy object. However there is no way to get the video content into the canvas from the worker, since the only path right now is through attaching the media stream to a video element and a canvas drawImage operation with the video element as source.
Because of this limitation it's probably fine to mark the API as exposed on Window only, but I'd like us to explore this use case and see if anything can be done to support it.

From: Harald Alvestrand [harald@alvestrand.no]
Sent: Tuesday, May 12, 2015 1:23 PM
To: public-media-capture@w3.org
Subject: Re: [Exposed] attribute on our APIs

Den 04. mai 2015 19:20, skrev Harald Alvestrand:
> On 04/29/2015 05:17 PM, Harald Alvestrand wrote:
>> Den 22. april 2015 19:18, skrev Martin Thomson:
>>> On 22 April 2015 at 05:16, Harald Alvestrand <harald@alvestrand.no>
>>> wrote:
>>>> What considerations do people know of that dictate whether or not we
>>>> should expose APIs to workers or not?
>>> The primary consideration is whether we want to expose them to workers.
>>> Maybe you should ask if anyone plans to implement X in workers.
>> As amended by Martin:
>> Does anyone plan to implement any part of the Media Capture and Streams
>> API in workers?
> With all the responses I have seen so far:
> The conclusion is that nobody plans to implement any part of the Media
> Capture and Streams API in workers, and we'll mark all our APIs (where
> appropriate) with [Exposed=Window].
> I'll leave this open until Wednesday afternoon, and if the conclusion
> still stands, will take that as a consensus position and relay it to the
> editors for implementation.
>        Harald

The conclusion has remained standing.

Received on Monday, 18 May 2015 13:42:06 UTC

This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 16:26:33 UTC