Anthony Léonard authored Apr 07, 2017 and Guillaume Roguez committed Apr 08, 2017

Commit 1ed6a0fe

 revealed a
case where codec quality is not saved and restored correctly
when holding/un-holding if quality is not set to auto.

The videoBitrateInfo_ struct of the VideoRtpSession is left to its
default value where quality is equal to 0. When un-holding a call,
the quality value to be used by the codec is then equal to 0 which
put the codec in CBR mode. As the default bitrate on H.264 codec is
very low (250 kbits/s), very poor quality was noticed on average resolution.

We now initialize videoBitrateInfo_ with the default quality settings
which makes the restored quality consistent on un-hold.

Change-Id: I23ef27cae953bcf60f1f90b18e042c3affd8ecd0
Reviewed-by: Guillaume Roguez <guillaume.roguez@savoirfairelinux.com>