Re: Proposal for more NavigatorUserMediaError error codes

I think these are sensible suggestions: a big improvement over baffling
one-size-fits-all messages, and make it easier to help users.

In particular, for #4, the obvious use case is an unplugged webcam.

Sam


On 30 July 2013 12:59, Paul Neave <paul.neave@gmail.com> wrote:

>  Following on from a conversation about the implementation of error codes
> returned by a getUserMedia request (see
> http://lists.w3.org/Archives/Public/public-media-capture/2013Jul/0034.html ),
> I'd like to submit a proposal to formally add two more error codes to the
> spec.
>
> Firstly, there are already two error codes defined by the spec (see
> http://dev.w3.org/2011/webrtc/editor/getusermedia.html#attributes-4 )
>
> 1. PERMISSION_DENIED - User denied permission for scripts from this origin
> to access the media device
> 2. CONSTRAINT_NOT_SATISFIED - One of the mandatory constraints could not
> be satisfied
>
> In addition to these, please consider the following:
>
> 3. HARDWARE_UNAVAILABLE - A suitable device is connected but a hardware
> error prevented access (such as an OS/program/webpage lock)
> 4. NO_DEVICES_FOUND - No suitable devices are connected whatsoever
>
> There was consensus that #3 and #4 would be good additions, and no
> counterarguments were put forward for not implementing them. Perhaps there
> is a case for even more error codes, but that is not for this proposal.
> These extra two error codes stand out with a clear and understandable use
> case.
>
> Firefox has already implemented error codes #3 and #4, so the grounds for
> this has been proven and well tested.
>
> Thank you for your consideration.
> Paul.
>
>