Sanitize PTZ capabilities/settings based on PTZ permission

[beaufortfrancois]

As raised by @youennf in #243 (comment), the spec should say clearly that PTZ capabilities are not available when PTZ permission is not granted. Same for PTZ settings.

@eehakkin Can you take care of this?

[youennf]

To be clear, it might be ok to allow web page to know that a selected camera has PTZ so that web page asks more permission to user. This is up to discussion but the spec should clearly specify it either way.

For PTZ settings, spec should clearly mandate sanitization.

[beaufortfrancois]

For info, Chromium implementation sanitizes PTZ capabilities and settings based on PTZ permission.

[youennf]

The particular case of PTZ capabilities seems worth getting input from the WebRTC WG.

[eehakkin]

So the corresponding pull request is #248.

[eehakkin]

As raised by @youennf in #243 (comment), the spec should say clearly that PTZ capabilities are not available when PTZ permission is not granted. Same for PTZ settings.

The both changes have now been merged.

[beaufortfrancois]

Thanks! I'll close it.
@youennf Feel free to re-open if there's something we've missed.

[jan-ivar]

This issue has a resolution associated with it in the minutes so I think it should remain open until its PR has been merged.