W3C home > Mailing lists > Public > public-audio@w3.org > January to March 2012

Re: getUserMedia use cases

From: Chris Wilson <cwilso@google.com>
Date: Mon, 30 Jan 2012 14:38:25 -0800
Message-ID: <CAJK2wqX_T8PEskXK=-uYwGGUUQo8FeB-_WPLsWD8aYn93i4=dw@mail.gmail.com>
To: Chris Rogers <crogers@google.com>
Cc: Doug Schepers <schepers@w3.org>, Robin Berjon <robin@berjon.com>, public-audio@w3.org, Dom Hazael-Massieux <dom@w3.org>
YES!!  Awesome.  Would love to have audio channel enumeration.

On Mon, Jan 30, 2012 at 12:23 PM, Chris Rogers <crogers@google.com> wrote:

>
>
> On Mon, Jan 30, 2012 at 12:11 PM, Doug Schepers <schepers@w3.org> wrote:
>
>> Hi, Robin-
>>
>> Thanks for following up on-list!
>>
>>
>> On 1/30/12 11:39 AM, Robin Berjon wrote:
>>
>>>
>>> as you probably know (or not!) there is ongoing work regarding media
>>> capture that is likely to be of interest to you. It is taking place
>>> as part of the Media Capture task force, the email address for which
>>> is public-media-capture@w3.org.
>>>
>>
>> (FYI, Robin is one of the chairs of the Device APIs WG.)
>>
>>
>>
>>  We've been working on a use cases document which you can find at:
>>>
>>> http://dvcs.w3.org/hg/dap/raw-**file/tip/media-stream-capture/**
>>> scenarios.html<http://dvcs.w3.org/hg/dap/raw-file/tip/media-stream-capture/scenarios.html>
>>>
>>
>> And the spec itself is here, right?
>>  http://dev.w3.org/2011/webrtc/**editor/getusermedia.html<http://dev.w3.org/2011/webrtc/editor/getusermedia.html>
>>
>>
>>
>>   I think that it would be quite valuable if you were to take the time
>>> to make sure that what is being built over there works well for your
>>> needs, notably by checking that your requirements are properly
>>> captured.
>>>
>>
>> As I mentioned on IRC, I believe we had discussed, a need not just for a
>> microphone, but for multiple line-ins (lines-in?), including different
>> mics, guitar pickups, etc.
>
>
>
>> Chris Rogers, did I get that right?  Can we work on a scenario and some
>> requirements for the DAP WG's Media Capture task force?  Olivier, Al, can
>> we add this to the next Audio telcon agenda?
>>
>
> Yes, it would be good to have an introspection API to enumerate the
> available audio devices for both audio input and output.  A built-in
> microphone would be one such device.  Also commonly available is the
> line-in analog audio input on a laptop or desktop computer.  And, of
> course, any externally connected multi-channel USB or Firewire audio
> devices.  Some of these can present eight (or more) simultaneous audio
> input and output channels simultaneously.
>
> It's important to not consider audio input in isolation, but also audio
> output capabilities when enumerating the devices.
>
>
>>
>> Robin, Dom, would it make sense for the Audio WG to also participate in
>> that Media Capture task force?
>>
>> Regards-
>> -Doug
>>
>
>
Received on Monday, 30 January 2012 22:38:53 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 30 January 2012 22:38:55 GMT