Add pass through support for Opus and VP8; Opus format attribute negotiation
authorMatthew Jordan <mjordan@digium.com>
Fri, 23 Aug 2013 15:42:27 +0000 (15:42 +0000)
committerMatthew Jordan <mjordan@digium.com>
Fri, 23 Aug 2013 15:42:27 +0000 (15:42 +0000)
commit4d348e853cbd9ba7bc976487bfcb352a84e5ece0
treefdf289e34cd706884aed7a262409fc3cdcba9bd1
parente31bd332b83f0245ce8bd6626279e1b9c683ec18
Add pass through support for Opus and VP8; Opus format attribute negotiation

This patch adds pass through support for Opus and VP8. That includes:

* Format attribute negotiation for Opus. Note that unlike some other codecs,
  the draft RFC specifies having spaces delimiting the attributes in addition
  to ';', so you have "attra=X; attrb=Y". This broke the attribute parsing in
  chan_sip, so a small tweak was also included in this patch for that.

* A format attribute negotiation module for Opus, res_format_attr_opus

* Fast picture update for VP8. Since VP8 uses a different RTCP packet number
  than FIR, this really is specific to VP8 at this time.

Note that the format attribute negotiation in res_pjsip_sdp_rtp was written
by mjordan. The rest of this patch was written completely by Lorenzo Miniero.

Review: https://reviewboard.asterisk.org/r/2723/

(closes issue ASTERISK-21981)
Reported by: Tzafrir Cohen
patches:
  asterisk_opus+vp8_passthrough_20130718.patch uploaded by lminiero (License 6518)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@397526 65c4cc65-6c06-0410-ace0-fbb531ad65f3
channels/chan_pjsip.c
channels/chan_sip.c
include/asterisk/format.h
include/asterisk/opus.h [new file with mode: 0644]
main/channel.c
main/format.c
main/frame.c
main/rtp_engine.c
res/res_format_attr_opus.c [new file with mode: 0644]
res/res_pjsip_sdp_rtp.c
res/res_rtp_asterisk.c