Information technology — UPnP Device Architecture — Part 14-12: Audio Video Device Control Protocol — Level 3 — Audio Video Content Directory Service
信息技术——UPnP设备架构第14-12部分:音频视频设备控制协议——3级——音频视频内容目录服务
ISO/IEC 29341-14-12:2011(E) describes a service template which is compliant with the UPnP Device Architecture version 1.0. It defines a service type referred to herein as ContentDirectory service. The purpose of the ContentDirectory service is to allow the server device provide a uniform mechanism for UI devices to browse the content on the server and to obtain detailed information about object individual content. The ContentDirectory service additionally provides a lookup/storage service that allows clients to locate (and possibly store) individual objects (for example, songs, movies, pictures, etc) that the (server) device is capable of providing.