onVideoUpgraded method
Handle upgrade to video
Implementation
void onVideoUpgraded(bool withVideo, bool isUpgradeModeRecvOnly) {
//Siprix mutes camera when upgrade video request received from remote side AND mode set as recvOnly
if(withVideo && isUpgradeModeRecvOnly && !_isUpgradingToVideo) _isCamMuted = true;
_hasVideo = withVideo;
_isUpgradingToVideo = false;
notifyListeners();
}