| commit | 615d3013de815e52a1536a8c4c068b91c814ccdd | [log] [tgz] |
|---|---|---|
| author | hbos <hbos@webrtc.org> | Wed Aug 24 08:33:13 2016 |
| committer | Commit bot <commit-bot@chromium.org> | Wed Aug 24 08:33:19 2016 |
| tree | 0cc354f35ce7dcd585e9f797a1058a8e904cb462 | |
| parent | 616df1e95c5ac70d288d83e694eefc8f78da6245 [diff] |
RTCStats and RTCStatsReport added (webrtc/stats). The old and new getStats are very different. This CL proposes rewriting the new getStats from scratch with a bottom-up approach, starting with the fundamental stats classes. This will allow cleaner and more efficient code that is more aligned with the spec. RTCStats and subclasses are the equivalent to RTCStats and RTCStats- -derived dictionaries from the specs[1][2]. The dictionary members are public member variables of type RTCStatsMember<T>, where T is one of the supported types. All members derive from RTCStatsMemberInterface and iteration of members is possible with RTCStats::Members(). The members are not stored in a map for performance and readability. Type checking is supported with static class variables, kType. Only the supported member types T are specialized and may be instantiated, and sequences are supported with std::vector<...>. Type checking is again supported with static class variables, kType. RTCStatsReport is the equivalent from the spec[3], and maps RTCStats::id to RTCStats-objects. RTCStatsReport is reference counted. It and its contained stats may be destroyed on any thread. When the RTCStatsCollector is added in a follow-up CL, it will return const references to the RTCStatsReports. This means copies don't have to be made for multiple stats observers or when jumping threads. In fact, no copies of any stats will have to be made in surfacing stats to Blink. [1] https://www.w3.org/TR/2016/WD-webrtc-20160531/#rtcstats-dictionary [2] https://w3c.github.io/webrtc-stats/archives/20160526/webrtc-stats.html [3] https://www.w3.org/TR/2016/WD-webrtc-20160531/#rtcstatsreport-object This adds the new folder webrtc/stats/, with target rtc_stats and binary rtc_stats_unittests. Public api headers are placed in webrtc/api/ and .cc files are placed in webrtc/stats/. BUG=chromium:627816 Review-Url: https://codereview.webrtc.org/2241093002 Cr-Commit-Position: refs/heads/master@{#13879}
WebRTC is a free, open software project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. The WebRTC components have been optimized to best serve this purpose.
Our mission: To enable rich, high-quality RTC applications to be developed for the browser, mobile platforms, and IoT devices, and allow them all to communicate via a common set of protocols.
The WebRTC initiative is a project supported by Google, Mozilla and Opera, amongst others. This page is maintained by the Google Chrome team.
See http://www.webrtc.org/native-code/development for instructions on how to get started developing with the native code.