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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "content/browser/renderer_host/media/media_stream_track_metrics_host.h"
      6 
      7 #include "base/metrics/histogram.h"
      8 #include "content/common/media/media_stream_track_metrics_host_messages.h"
      9 
     10 // We use a histogram with a maximum bucket of 16 hours to infinity
     11 // for track durations.
     12 #define UMA_HISTOGRAM_TIMES_16H(name, sample)                        \
     13   UMA_HISTOGRAM_CUSTOM_TIMES(name, sample,                           \
     14                              base::TimeDelta::FromMilliseconds(100), \
     15                              base::TimeDelta::FromHours(16),         \
     16                              50);
     17 
     18 namespace content {
     19 
     20 MediaStreamTrackMetricsHost::MediaStreamTrackMetricsHost()
     21     : BrowserMessageFilter(MediaStreamTrackMetricsHostMsgStart) {
     22 }
     23 
     24 MediaStreamTrackMetricsHost::~MediaStreamTrackMetricsHost() {
     25   // Our render process has exited. We won't receive any more IPC
     26   // messages from it. Assume all tracks ended now.
     27   for (TrackMap::iterator it = tracks_.begin();
     28        it != tracks_.end();
     29        ++it) {
     30     TrackInfo& info = it->second;
     31     ReportDuration(info);
     32   }
     33   tracks_.clear();
     34 }
     35 
     36 bool MediaStreamTrackMetricsHost::OnMessageReceived(
     37     const IPC::Message& message) {
     38   bool handled = true;
     39 
     40   IPC_BEGIN_MESSAGE_MAP(MediaStreamTrackMetricsHost, message)
     41     IPC_MESSAGE_HANDLER(MediaStreamTrackMetricsHost_AddTrack, OnAddTrack)
     42     IPC_MESSAGE_HANDLER(MediaStreamTrackMetricsHost_RemoveTrack, OnRemoveTrack)
     43     IPC_MESSAGE_UNHANDLED(handled = false)
     44   IPC_END_MESSAGE_MAP()
     45 
     46   return handled;
     47 }
     48 
     49 void MediaStreamTrackMetricsHost::OnAddTrack(uint64 id,
     50                                              bool is_audio,
     51                                              bool is_remote) {
     52   if (tracks_.find(id) != tracks_.end())
     53     return;
     54 
     55   TrackInfo info = {is_audio, is_remote, base::TimeTicks::Now()};
     56   tracks_[id] = info;
     57 }
     58 
     59 void MediaStreamTrackMetricsHost::OnRemoveTrack(uint64 id) {
     60   if (tracks_.find(id) == tracks_.end())
     61     return;
     62 
     63   TrackInfo& info = tracks_[id];
     64   ReportDuration(info);
     65   tracks_.erase(id);
     66 }
     67 
     68 void MediaStreamTrackMetricsHost::ReportDuration(const TrackInfo& info) {
     69   base::TimeDelta duration = base::TimeTicks::Now() - info.timestamp;
     70   if (info.is_remote) {
     71     if (info.is_audio) {
     72       DVLOG(3) << "WebRTC.ReceivedAudioTrackDuration: " << duration.InSeconds();
     73       UMA_HISTOGRAM_TIMES_16H("WebRTC.ReceivedAudioTrackDuration", duration);
     74     } else {
     75       DVLOG(3) << "WebRTC.ReceivedVideoTrackDuration: " << duration.InSeconds();
     76       UMA_HISTOGRAM_TIMES_16H("WebRTC.ReceivedVideoTrackDuration", duration);
     77     }
     78   } else {
     79     if (info.is_audio) {
     80       DVLOG(3) << "WebRTC.SentAudioTrackDuration: " << duration.InSeconds();
     81       UMA_HISTOGRAM_TIMES_16H("WebRTC.SentAudioTrackDuration", duration);
     82     } else {
     83       DVLOG(3) << "WebRTC.SentVideoTrackDuration: " << duration.InSeconds();
     84       UMA_HISTOGRAM_TIMES_16H("WebRTC.SentVideoTrackDuration", duration);
     85     }
     86   }
     87 }
     88 
     89 }  // namespace content
     90