2 Commits (5bacde37a28c0aac2fb7d6fbbb799331c58f55e7)

Author	SHA1	Message	Date
Ben Ford	5bacde37a2	res_rtp_asterisk: Add support for sending NACK requests. ... Support has been added for receiving a NACK request and handling it. Now, Asterisk can detect when a NACK request should be sent and knows how to construct one based on the packets we've received from the remote end. A buffer has been added that will store out of order packets until we receive the packet we are expecting. Then, these packets are handled like normal and frames are queued to the core like normal. Asterisk knows which packets to request in the NACK request using a vector which stores the sequence numbers of the packets we are currently missing. If a missing packet is received, cycle through the buffer until we reach another packet we have not received yet. If the buffer reaches a certain size, send a NACK request. If the buffer reaches its max size, queue all frames to the core and wipe the buffer and vector. According to RFC3711, the NACK request must be sent out in a compound packet. All compound packets must start with a sender or receiver report, so some work was done to refactor the current sender / receiver code to allow it to be used without having to also include sdes information and automatically send the report. Also added additional functionality to ast_data_buffer, along with some testing. For more information, refer to the wiki page: https://wiki.asterisk.org/wiki/display/AST/WebRTC+User+Experience+Improvements ASTERISK-27810 #close Change-Id: Idab644b08a1593659c92cda64132ccc203fe991d	7 years ago
Ben Ford	138e0eff4e	Add data buffer API to store packets. ... Adds a data buffer with a configurable size that can store different kinds of packets (like RTP packets for retransmission). Given a number it will store a data packet at that position relative to the others. Given a number it will retrieve the given data packet if it is present. This is purposely a storage of arbitrary things so it can be used not just for RTP packets but also Asterisk frames in the future if needed. The API does not internally use a lock, so it will be up to the user of the API to properly protect the data buffer. For more information, refer to the wiki page: https://wiki.asterisk.org/wiki/display/AST/WebRTC+User+Experience+Improvements Change-Id: Iff13c5d4795d52356959fe2a57360cd57dfade07	7 years ago