Here is a list of all files with brief descriptions:

src
ccrtp
base.h	Base elements for RTP stacks: constants, types and global functions
channel.h	Definition of socket classes for different underlying transport and/or network protocols that can be used to instantiate the TRTPSessionBase template
cqueue.h	Generic RTCP control queues
CryptoContext.h
CryptoContextCtrl.h
ext.h	CcRTP Stack extensions
formats.h	Payload types and formats
ioqueue.h	Generic RTP input/output queues
iqueue.h	Generic RTP input queues
oqueue.h	Generic RTP output queues
pool.h	Pools of RTP sessions
queuebase.h	Base classes for RTP queues
rtcppkt.h	RTCP packets handling
rtp.h	Generic and audio/video profile specific RTP interface of ccRTP
rtppkt.h	RTP packets handling
sources.h	Sources of synchronization and participants related clases
private.h	Declaration of ccRTP internal stuff