tree ebf471ad79a121ea6f4bbacc3be5f7edd4144865
parent ae3f0718f19e1c9bcd06941967ddb0db9fd4f876
author Max <msuraev@sysmocom.de> 1465560547 +0200
committer Max <msuraev@sysmocom.de> 1465560547 +0200

DTX: add data necessary for scheduling

DTXd: to schedule SID repetition we have to know when previous SID was
sent (fn) and if it was UPDATE or FIRST SID (is_update).
DTXu: to properly set Marker bit in outgoing RTP we have to know the
beginning of talkspurt. For codecs without explicit ONSET event we can
do it by setting the flag (ul_sid) upon receiving SID and unsetting it
on speech frames.

Change-Id: I79cbec3b6c6fed5de385f8e202ceaf0b13234778
Related: OS#22, OS#1701