| Copyright (c) 1999-2002 by Open Source Telecom Corporation. |
| Verbatim copying and distribution of this entire article is permitted |
| in any medium, provided this notice is preserved. |
| |
| Welcome to GNU ccRTP, the RTP protocol stack of GNU Common C++ and the |
| GNU project. GNU ccRTP was created as a "generic" and high performance |
| RTP stack and uses queued packet lists for both sending and receiving of |
| realtime data. A single scheduler thread both schedules delivery of |
| timestamped outgoing packets, and processes incoming packets into the |
| receive queue. A seperate thread or process can then feed data into the |
| stack for delivery and process pending requests without interfering with |
| the stack service thread itself. |
| |
| By using queued packet buffers in linked lists it is possible to |
| achieve jitter buffering and to mix and change payload types |
| mid-stream without complicated buffer management. Jitter buffering |
| can be achieved both by prebuffering packets before sending and by |
| delaying processing of packets pending on the receive queue. |
| |
| This stack is being designed to support both RTP and RTCP, and is general |
| purpose enough to use in audio and video conferencing, for building |
| streaming media servers, and for internet telephony. Current releases of |
| GNU ccRTP now support multicast networks as well as point to point RTP, |
| multiple source connections, and many other advanced features. Any |
| questions about ccrtp can be handled either in the GNU Common C++ mailing |
| lists or thru ccrtp-devel@gnu.org. |
| |
| David |
| |