1429985 - Remembered microphone sharing always chooses default device instead of saved device

Status: RESOLVED DUPLICATE of bug 989094

(Core :: WebRTC: Audio/Video, defect, P2)

Description

[mozilla]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36

Steps to reproduce:

From a page which wants to record audio from the local machine (I used the Facebook messenger page), I activated recording, chose a device from the list, ticked the checkbox to remember my choice.  On that attempt, the recording came from the correct device.  On all subsequent recording attempts, the Windows default device was used instead.


Actual results:

Firefox didn't use the device I chose from the list on the first recording attempt.  It used the Windows default recording device instead.


Expected results:

Firefox should have used the device I selected from the list it offered on the first recording attempt which I elected to save rather than the Windows default device.

Comment 1

[Alex Chronopoulos [:achronop]]

I can repro on Linux Nightly.

Comment 2

[moraddudi]

Any ETA for this issue?

Comment 3

[moraddudi]

Is there available workaround? 
this setting saved in the pref.js?, DB?

Comment 4

[Henri Sivonen (:hsivonen)]

Marking as [wfh]

Comment 5

[Nils Ohlmeier [:drno]]

@jib: if I'm not mistaken this is based on the design of current APIs not the responsibility of the user agent, but instead the service needs to remember the device ID, correct?

Comment 6

[Jan-Ivar Bruaroey [:jib] (needinfo? me)]

Yes, in the web model the site is responsible for remembering the user's choice(s), using deviceId:

const stream = await navigator.mediaDevices.getUserMedia({audio: {deviceId: localStorage.lastMicId}});
localStorage.lastMicId = stream.getAudioTracks()[0].getSettings().deviceId;

This issue is thus limited to sites that implement no device choice (the number of such sites is likely low, but not zero). Not an issue on major sites AFAIK. We should keep this in mind when prioritizing.

Compared to other browsers, Firefox at least has a picker in its permission prompt, so that's better than most, and works as you would expect if the site is programmed right. But even then it only works until you persist permission (because our picker is in the permission prompt).

In bug 989094 we contemplated a way to remember the last-used device for these sorry sites, within site constraints. This might be good to revisit given our recent interest in pushing for standarizing our picker (bug 1637360).