changelog

jrtplib 的最新版本,比较好用的

                                                             October 1, 2004
				
				
				JRTPLIB ChangeLog
				
				   -----------

 3.1.0 (October 2004)
 	* Added a callback OnPollThreadStep which is called at the end of 
	  each loop of the poll thread
	* Added the examples subdirectory to the package
	* Fixed bug in rtpudpv4transmitter.cpp and rtpudpv6transmitter.cpp
	  which caused an infinite loop in LeaveAllMulticastGroups. Thanks
	  to Stijn Agten ([e-mail]) for pointing this out.
	* Added a function GetTransmissionInfo to the RTPTransmitter class
	  (and subclasses). The function will return some additional
	  information about the transmitter, like local IP addresses and
	  socket descriptors.

 3.0.2 (September 2004)
 	* Bugfix in rtpinternalsourcedata.cpp. The bug caused a crash when
	  duplicate packets were received. Thanks to Dominique Prunier
	  ([e-mail]) for informing me about
	  this.

 3.0.1 (September 2004)
 	* Bugfix in rtpudpv4transmitter.cpp and rtpudpv6transmitter.cpp in
	  method SetReceiveMode
	* Removed unused 'acceptownpackets' variable from
	  rtpudpv4transmitter.cpp and rtpudpv6transmitter.cpp
	* Added a 'Dump' function (for debugging) in RTPUDPv4Transmitter
	  and RTPUDPv6Transmitter
	* Now using JThread 1.1.0

 3.0.0 (August 2004)
 	* Complete rewrite of the library to provide better extensibility
	  and compliance with RFC 3550
	* Changes from the 2.x series:
		- The 2.x series was created with the idea that the user 
		  would only need to use the RTPSession class which meant 
		  that the other classes were not very useful by themselves. 
		  This version on the other hand, aims to provide many 
		  useful components to aid the user in building RTP capable 
		  applications.
		- In this version, the code which is specific for the 
		  underlying protocol by which RTP packets are transported, 
		  is bundled in a class which inherits its interface from a 
		  class called RTPTransmitter. This makes it easy for 
		  different underlying protocols to be supported. Currently 
		  there is support for UDP over IPv4 and UDP over IPv6.

 2.9 (July 2004)
 	* Fixed bug in rtpsrclist.cpp. Thanks to Lukasz Bobowiec 
	  ([e-mail])
	* Added function in RTPSourceData which returns the IP address
	* Changed the random routines. Thanks to Jaap Keuter
	  ([e-mail])
	* Made the shared library link against libstdc++ if possible.
	  Thanks to Anatoly Yakovenko ([e-mail]) for the
	  suggestion.

 2.8 (January 2004)
 	* Added code to avoid a crash when receiving a malformed packet
	* Fixed a memory leak (forgot to free memory when a malformed
	  packet was discarded)
	* Changed debug routines for memory tracking

 2.7b (November 2003)
 	* Only added --enable-fpic and --enable-fPIC to the configure script

 2.7 (December 2002)
 	* Fixed important bug in rtpsources.cpp. This bug could cause
	  source information to get lost and could create a memory leak.
	* Improved support for AIX in multicasting code (uses _AIX define). 
	  Thanks to Klaus Matuschek ([e-mail])
	* Fixed possible buffer overrun in rtpcontributingsources.cpp

 2.6 (January 2002)
	* This release only contains some minor changes
	* An 'install' target was added to the Makefile
	* Some newlines were added add the end of certain files to avoid
	  compiler warnings
	* Improved the jitter calculations somewhat 

 2.5 (December 2000)
 	* Added the possibility for the user to receive the raw RTCP packets.
	* Fixed a bug in RTPContributingSources::CreateLocalCNAME(). In this
	  routine, the wrong length was passed to 'gethostname'. Thanks to
	  Sergey V.Shpital ([e-mail]) for bringing this to my
	  attention.
	* Added a routine to set the Type of Service (ToS) field of the
	  outgoing packets (both RTP and RTCP). Thank to Philippe Cardon
	  ([e-mail]) for writing this code.
	* Fixed a bug in the 'packets lost' calculation. Thank to Domingo 
	  Cuevas Jr. ([e-mail]) for helping me find this bug.
	* Fixed a bug in the sequence number and jitter calculation: when
	  packets were received out of order, the sequence numbers and
	  jitter got messed up. Many thanks to Mohammad Tawsheeq Russool 
	  ([e-mail]) for helping me track down these
	  bugs.
	* Added the possibility to set the timestamp unit for a particular
	  source. Previously, it was assumed that their timestamp unit
	  was the same as that of the local session.
	
 2.4 (July 2000)
 	* Fixed a bug which caused all CSRS's except one to be incorrect.
 	* Added RTP header extension support (for both sending and receiving).
 	* Added some things (which should have been there already) to
 	  RTPPacket.
 	* Adjusted the way in which the login name is retrieved on unix-like
 	  systems. First I used a call to 'getlogin', but apparently this
 	  function messes with timers through the use of 'alarm' calls (at
 	  least on Linux). Now, I use a combination of 'geteuid' and
 	  'getpwuid' to obtain the necessary information. This does not
 	  have that problem and is a lot cleaner since it doesn't depend
 	  on login info (utmp) like 'getlogin'. Thanks to Roberto Jung Drebes
 	  ([e-mail]) for pointing out the timer-problem.
 	* Made a LaTeX version of the manual and tutorial. Looks a lot nicer.
 	* Made it possible for the user to specify the local IP address
 	  instead of letting the library figure it out itself.
 	* Fixed a bug which caused the 'fraction lost' in a RR packet to be
 	  zero all the time. Thanks to Domingo Cuevas Jr. ([e-mail]) for
 	  pointing this out.
 	* Rewrote the RTCP packet sending routines. Now, they are much cleaner
 	  and much more understandable :)
 	* Added better support for RTCP 'APP' packets. You can now both send
 	  and receive APP packets.
				
 2.3 (April 2000)
 	* The routine which creates and sends RTCP packets is now a bit faster.
 	* Added a sample that demonstrates the round-trip time function.
 	* Added functions to RTPSourceData: now the time when the last RR or
 	  SR report was received can be retrieved. Also, the round trip time
 	  can be retrieved: this is calculated as suggested in RFC 1889.
 	* Fixed a bug: the LSR value was not calculated correctly, now it is
 	  (or should be ;-) )
 	* Instead of specifying defines on the command line, they are now
 	  defined in a config file. The unix version of this file is created
 	  by the configure script.
 	* Added a member to RTPPacket which I had forgotten (the payload type,
 	  which is obviously important :-) ).
 	* The library should now be able to work on a VxWorks platform. Thanks
 	  to Dave Osborne ([e-mail]) for his help.
	* Added a tutorial and a small example application.
 	* Added some debugging routines (RTPDebug class) to check for memory
 	  leaks. It turned out that there weren't any, so I'm pretty pleased ;)
 	* I've added a 'configure' script to make compilation a bit easier
 	  across different platforms. Thanks to Qi Han ([e-mail]) for
 	  helping me to improve the support for the Solaris platform. Also
 	  many thanks to Dario Maggiorini ([e-mail]) for
 	  helping me test the script on several platforms.
 	* Added multicasting support.
	* A bug in rtpsourcedata.cpp was pointed out and fixed by Ramon Clout
	  ([e-mail]). Many thanks for this, Ramon.
				
 2.2 (February 2000)
 	* Extra support for Sun and HP. Thanks to Henry Lau ([e-mail])
 	  and Justin Matthews ([e-mail]) for this information.
 	* The 'Poll' routine in rtpconnection.cpp has been altered. Now, the
 	  routine should work even if there's that ioctl bug (previously, this
 	  bug was only taken into consideration on a Windows platform).
 	  Thanks to Justin Matthews ([e-mail]) for his bugreport.
 	* Added some routines to RTPSession to get the local IP address and the
 	  port number of the sending socket.
 	* 'install' rule added to the makefile.
 	* Added the define 'RTP_SOCKLENTYPE_UINT'. See README.TXT for more
 	  information about this.

 2.1 (December 1999)
	* First release of jrtplib.
	* Added member functions of RTPSession to retrieve the used sockets.
	* Made the destination list faster by using a hash table.

 2.0 (August 1999)
 	* First decent implementation of RTP. Entirely rewritten since 1.0.
 	
 1.0 (August 1999)
 	* First implementation of RTP. There were a lot of things that weren't
 	  quite right and the organisation of the classes was quite nasty.
 	  However, I learned a lot about RTP making this version, and so it
 	  allowed me to make a good start on version 2.0.