套件： libusageenvironment3 (2020.01.19-1build1)

multimedia RTSP streaming library (UsageEnvironment classes)

The live555.com streaming media code is a set of C++ libraries for multimedia streaming, using open standard protocols (RTP/RTCP, RTSP, SIP). These libraries can be used to build applications to stream, receive and process MPEG, H.263+ or JPEG video, several audio codecs, and can easily be extended to support additional codecs. They can also be used to build basic RTSP (Real Time Streaming Protocol) or SIP (Session Initiation Protocol) clients and servers.

This package contains the UsageEnvironment library. The "UsageEnvironment" and "TaskScheduler" classes are used for scheduling deferred events, for assigning handlers for asynchronous read events, and for outputting error/warning messages. Also, the "HashTable" class defines the interface to a generic hash table, used by the rest of the code.

These are all abstract base classes; they must be subclassed for use in an implementation. These subclasses can exploit the particular properties of the environment in which the program will run - e.g., its GUI and/or scripting environment.