RTCMediaStreamTrackStats.kind added and collected.

webrtc/api/stats/rtcstats_objects.h

 /*
  *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 24 matching lines @@
 };
 
 // https://w3c.github.io/webrtc-pc/#rtcicecandidatetype-enum
 struct RTCIceCandidateType {
   static const char* kHost;
   static const char* kSrflx;
   static const char* kPrflx;
   static const char* kRelay;
 };
 
+// |RTCMediaStreamTrackStats::kind| is not an enum in the spec but the only
+// valid values are "audio" and "video".
+// https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamtrackstats-kind

[hbos, 2017/01/10 15:47:14]

URL from rawgit converted to github.io, but it hasn't merged yet so dead link...

[hta-webrtc, 2017/01/11 12:36:54]

It's merged, but a new dated version hasn't been published yet.

+struct RTCMediaStreamTrackKind {
+  static const char* kAudio;
+  static const char* kVideo;
+};
+
 // https://w3c.github.io/webrtc-stats/#certificatestats-dict*
 class RTCCertificateStats final : public RTCStats {
  public:
   WEBRTC_RTCSTATS_DECL();
 
   RTCCertificateStats(const std::string& id, int64_t timestamp_us);
   RTCCertificateStats(std::string&& id, int64_t timestamp_us);
   RTCCertificateStats(const RTCCertificateStats& other);
   ~RTCCertificateStats() override;
 
@@ skipping 166 matching lines @@
   RTCStatsMember<std::string> stream_identifier;
   RTCStatsMember<std::vector<std::string>> track_ids;
 };
 
 // https://w3c.github.io/webrtc-stats/#mststats-dict*
 // TODO(hbos): Tracking bug crbug.com/659137
 class RTCMediaStreamTrackStats final : public RTCStats {
  public:
   WEBRTC_RTCSTATS_DECL();
 
-  RTCMediaStreamTrackStats(const std::string& id, int64_t timestamp_us);
-  RTCMediaStreamTrackStats(std::string&& id, int64_t timestamp_us);
+  RTCMediaStreamTrackStats(const std::string& id, int64_t timestamp_us,
+                           const char* kind);
+  RTCMediaStreamTrackStats(std::string&& id, int64_t timestamp_us,
+                           const char* kind);
   RTCMediaStreamTrackStats(const RTCMediaStreamTrackStats& other);
   ~RTCMediaStreamTrackStats() override;
 
   RTCStatsMember<std::string> track_identifier;
   RTCStatsMember<bool> remote_source;
   RTCStatsMember<bool> ended;
   // TODO(hbos): |RTCStatsCollector| does not return stats for detached tracks.
   // crbug.com/659137
   RTCStatsMember<bool> detached;
+  // See |RTCMediaStreamTrackKind| for valid values.
+  RTCStatsMember<std::string> kind;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/659137
   RTCStatsMember<std::vector<std::string>> ssrc_ids;
   // Video-only members
   RTCStatsMember<uint32_t> frame_width;
   RTCStatsMember<uint32_t> frame_height;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/659137
   RTCStatsMember<double> frames_per_second;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/659137
   RTCStatsMember<uint32_t> frames_sent;
   // TODO(hbos): Not collected by |RTCStatsCollector|. crbug.com/659137
@@ skipping 144 matching lines @@
   RTCStatsMember<std::string> rtcp_transport_stats_id;
   RTCStatsMember<bool> active_connection;
   RTCStatsMember<std::string> selected_candidate_pair_id;
   RTCStatsMember<std::string> local_certificate_id;
   RTCStatsMember<std::string> remote_certificate_id;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_STATS_RTCSTATS_OBJECTS_H_