Implement switch in front and back camera in JS SDK for mobile platforms

[mekya]

• Provide a method in JS SDK to switch cameras in the system(back/forth or other cameras)
• Switching cameras should be working in non-broadcasting and broadcasting state.
  • In broadcasting state, streaming should not be stopped while switching cameras
• Create a radio button in WebRTC Publish demo that user can choose cameras
• Please check turnon/turnoff camera works for all cameras

[RodrigoRVieira]

Facing exactly the same issue here with latest SDK/server. Fix please.

[Glfarley]

Inconvenient to have to disable/enable cameras in Windows to switch them. Cannot choose any cameras at all in iOS 13.4.1!

[mekya]

This feature is implemented and it's in PR. Unfortunately, travis has some problem for a couple of days that forces java 11 installation. This is why we don't merge it into the master.

[Glfarley]

Thanks. Will this also fix the problem where AMS does not choose any camera at all on my iPhone 11?

[0x62]

This feature appears to be broken on Firefox - both in my implementation and on the demo application.

Enterprise Edition 2.3.2 20210422_0456
Firefox Developer 89.0b15

This can be fixed by using exact object on lines 13 & 16 of switchVideoCameraCapture:

this.mediaConstraints.video.deviceId = { exact: deviceId };
...
deviceId: { exact: deviceId },

[mekya]

Thank you so much for your update @0x62.

I'm opening this issue to fix

[mekya]

Thank you @0x62 your contribution, you're great. We've sent the PR for that