Re: [rtcweb] determining mic/webcam availability on page load

On 2013-09-23 07:06, Harald Alvestrand wrote:
> On 09/22/2013 08:16 PM, Daniel Pocock wrote:
>>
>>
>> Hi,
>>
>> I'm not sure if this has been discussed before, but I think it would be
>> very useful for some applications to determine what hardware is
>> available very early, well before trying to do things like SIP
>> registration or making a call.
>>
>> However, if I use the code below, the result is that the user is
>> prompted twice for permissions, once during the initial hardware
>> detection and later when they try to make or receive a call.
>
> This is an API issue, so it should go to public-webrtc@w3.org

As this deals with access to input devices, I think the correct place is 
actually public-media-capture@w3.org

>
> But it's a solved issue in the spec, even though the implementations may
> be lagging: Use the getSourceInfos call to probe, not the getUserMedia call.
>
>
> http://dev.w3.org/2011/webrtc/editor/getusermedia.html#methods-1
>>
>> Regards,
>>
>> Daniel
>>
>>
>>
>> navigator.webkitGetUserMedia(
>>
>>    {audio: true, video: true},
>>
>>     function (stream) {
>>             var has_audio = false;
>>             var has_video = false;
>> 	  if(stream.getAudioTracks().length > 0)
>> 		  has_audio = true;
>> 	  if(stream.getVideoTracks().length > 0)
>> 		  has_video = true;
>> 	  console.log("closing unused stream");
>> 	  stream.stop();
>> 	  delete stream;
>>             checksDone(has_audio, has_video);
>>     },
>>
>>     function(err) {
>> 	  console.log(err.name + ": " + err.message);
>>             checksDone(false, false);
>>     }
>>
>> );
>>
>> _______________________________________________
>> rtcweb mailing list
>> rtcweb@ietf.org
>> https://www.ietf.org/mailman/listinfo/rtcweb
>
> _______________________________________________
> rtcweb mailing list
> rtcweb@ietf.org
> https://www.ietf.org/mailman/listinfo/rtcweb
>