chrome/browser/media/webrtc_browsertest_perf.cc

   1 // Copyright 2013 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 "chrome/browser/media/webrtc_browsertest_perf.h"
   6
   7 #include "base/strings/stringprintf.h"
   8 #include "base/values.h"
   9 #include "chrome/test/base/in_process_browser_test.h"
  10 #include "testing/perf/perf_test.h"
  11
  12 static std::string Statistic(const std::string& statistic,
  13                              const std::string& bucket) {
  14   // A ssrc stats key will be on the form stats.<bucket>-<key>.values.
  15   // This will give a json "path" which will dig into the time series for the
  16   // specified statistic. Buckets can be for instance ssrc_1212344, bweforvideo,
  17   // and will each contain a bunch of statistics relevant to their nature.
  18   // Each peer connection has a number of such buckets.
  19   return base::StringPrintf("stats.%s-%s.values", bucket.c_str(),
  20                             statistic.c_str());
  21 }
  22
  23 static bool MaybePrintResultsForAudioReceive(
  24     const std::string& ssrc, const base::DictionaryValue& pc_dict,
  25     const std::string& modifier) {
  26   std::string value;
  27   if (!pc_dict.GetString(Statistic("audioOutputLevel", ssrc), &value)) {
  28     // Not an audio receive stream.
  29     return false;
  30   }
  31
  32   EXPECT_TRUE(pc_dict.GetString(Statistic("bytesReceived", ssrc), &value));
  33   perf_test::PrintResult(
  34       "audio_bytes", modifier, "bytes_recv", value, "bytes", false);
  35   EXPECT_TRUE(pc_dict.GetString(Statistic("packetsLost", ssrc), &value));
  36   perf_test::PrintResult(
  37       "audio_misc", modifier, "packets_lost", value, "frames", false);
  38
  39   EXPECT_TRUE(pc_dict.GetString(Statistic("googExpandRate", ssrc), &value));
  40   perf_test::PrintResult(
  41       "audio_rates", modifier, "goog_expand_rate", value, "%", false);
  42   EXPECT_TRUE(
  43       pc_dict.GetString(Statistic("googSpeechExpandRate", ssrc), &value));
  44   perf_test::PrintResult(
  45       "audio_rates", modifier, "goog_speech_expand_rate", value, "%", false);
  46   EXPECT_TRUE(
  47       pc_dict.GetString(Statistic("googSecondaryDecodedRate", ssrc), &value));
  48   perf_test::PrintResult(
  49       "audio_rates", modifier, "goog_secondary_decoded_rate", value, "%",
  50       false);
  51
  52   return true;
  53 }
  54
  55 static bool MaybePrintResultsForAudioSend(
  56     const std::string& ssrc, const base::DictionaryValue& pc_dict,
  57     const std::string& modifier) {
  58   std::string value;
  59   if (!pc_dict.GetString(Statistic("audioInputLevel", ssrc), &value)) {
  60     // Not an audio send stream.
  61     return false;
  62   }
  63
  64   EXPECT_TRUE(pc_dict.GetString(Statistic("bytesSent", ssrc), &value));
  65   perf_test::PrintResult(
  66       "audio_bytes", modifier, "bytes_sent", value, "bytes", false);
  67   EXPECT_TRUE(pc_dict.GetString(Statistic("googJitterReceived", ssrc), &value));
  68   perf_test::PrintResult(
  69       "audio_tx", modifier, "goog_jitter_recv", value, "ms", false);
  70   EXPECT_TRUE(pc_dict.GetString(Statistic("googRtt", ssrc), &value));
  71   perf_test::PrintResult(
  72       "audio_tx", modifier, "goog_rtt", value, "ms", false);
  73   return true;
  74 }
  75
  76 static bool MaybePrintResultsForVideoSend(
  77     const std::string& ssrc, const base::DictionaryValue& pc_dict,
  78     const std::string& modifier) {
  79   std::string value;
  80   if (!pc_dict.GetString(Statistic("googFrameRateSent", ssrc), &value)) {
  81     // Not a video send stream.
  82     return false;
  83   }
  84
  85   // Graph these by unit: the dashboard expects all stats in one graph to have
  86   // the same unit (e.g. ms, fps, etc). Most graphs, like video_fps, will also
  87   // be populated by the counterparts on the video receiving side.
  88   perf_test::PrintResult(
  89       "video_fps", modifier, "goog_frame_rate_sent", value, "fps", false);
  90   EXPECT_TRUE(pc_dict.GetString(Statistic("googFrameRateInput", ssrc), &value));
  91   perf_test::PrintResult(
  92       "video_fps", modifier, "goog_frame_rate_input", value, "fps", false);
  93
  94   EXPECT_TRUE(pc_dict.GetString(Statistic("bytesSent", ssrc), &value));
  95   perf_test::PrintResult(
  96       "video_total_bytes", modifier, "bytes_sent", value, "bytes", false);
  97
  98   EXPECT_TRUE(pc_dict.GetString(Statistic("googFirsReceived", ssrc), &value));
  99   perf_test::PrintResult(
 100       "video_misc", modifier, "goog_firs_recv", value, "", false);
 101   EXPECT_TRUE(pc_dict.GetString(Statistic("googNacksReceived", ssrc), &value));
 102   perf_test::PrintResult(
 103       "video_misc", modifier, "goog_nacks_recv", value, "", false);
 104
 105   EXPECT_TRUE(pc_dict.GetString(Statistic("googFrameWidthSent", ssrc), &value));
 106   perf_test::PrintResult("video_resolution", modifier, "goog_frame_width_sent",
 107                          value, "pixels", false);
 108   EXPECT_TRUE(
 109       pc_dict.GetString(Statistic("googFrameHeightSent", ssrc), &value));
 110   perf_test::PrintResult("video_resolution", modifier, "goog_frame_height_sent",
 111                          value, "pixels", false);
 112
 113   EXPECT_TRUE(pc_dict.GetString(Statistic("googAvgEncodeMs", ssrc), &value));
 114   perf_test::PrintResult(
 115       "video_tx", modifier, "goog_avg_encode_ms", value, "ms", false);
 116   EXPECT_TRUE(pc_dict.GetString(Statistic("googRtt", ssrc), &value));
 117   perf_test::PrintResult("video_tx", modifier, "goog_rtt", value, "ms", false);
 118
 119   EXPECT_TRUE(pc_dict.GetString(
 120       Statistic("googEncodeUsagePercent", ssrc), &value));
 121   perf_test::PrintResult("video_cpu_usage", modifier,
 122                          "goog_encode_usage_percent", value, "%", false);
 123   return true;
 124 }
 125
 126 static bool MaybePrintResultsForVideoReceive(
 127     const std::string& ssrc, const base::DictionaryValue& pc_dict,
 128     const std::string& modifier) {
 129   std::string value;
 130   if (!pc_dict.GetString(Statistic("googFrameRateReceived", ssrc), &value)) {
 131     // Not a video receive stream.
 132     return false;
 133   }
 134
 135   perf_test::PrintResult(
 136       "video_fps", modifier, "goog_frame_rate_recv", value, "fps", false);
 137   EXPECT_TRUE(
 138       pc_dict.GetString(Statistic("googFrameRateOutput", ssrc), &value));
 139   perf_test::PrintResult(
 140       "video_fps", modifier, "goog_frame_rate_output", value, "fps", false);
 141
 142   EXPECT_TRUE(pc_dict.GetString(Statistic("packetsLost", ssrc), &value));
 143   perf_test::PrintResult("video_misc", modifier, "packets_lost", value,
 144                          "frames", false);
 145
 146   EXPECT_TRUE(pc_dict.GetString(Statistic("bytesReceived", ssrc), &value));
 147   perf_test::PrintResult(
 148       "video_total_bytes", modifier, "bytes_recv", value, "bytes", false);
 149
 150   EXPECT_TRUE(
 151       pc_dict.GetString(Statistic("googFrameWidthReceived", ssrc), &value));
 152   perf_test::PrintResult("video_resolution", modifier, "goog_frame_width_recv",
 153                          value, "pixels", false);
 154   EXPECT_TRUE(
 155       pc_dict.GetString(Statistic("googFrameHeightReceived", ssrc), &value));
 156   perf_test::PrintResult("video_resolution", modifier, "goog_frame_height_recv",
 157                          value, "pixels", false);
 158
 159   EXPECT_TRUE(pc_dict.GetString(Statistic("googCurrentDelayMs", ssrc), &value));
 160   perf_test::PrintResult(
 161       "video_rx", modifier, "goog_current_delay_ms", value, "ms", false);
 162   EXPECT_TRUE(pc_dict.GetString(Statistic("googTargetDelayMs", ssrc), &value));
 163   perf_test::PrintResult(
 164       "video_rx", modifier, "goog_target_delay_ms", value, "ms", false);
 165   EXPECT_TRUE(pc_dict.GetString(Statistic("googDecodeMs", ssrc), &value));
 166   perf_test::PrintResult("video_rx", modifier, "goog_decode_ms", value, "ms",
 167                          false);
 168   EXPECT_TRUE(pc_dict.GetString(Statistic("googMaxDecodeMs", ssrc), &value));
 169   perf_test::PrintResult(
 170       "video_rx", modifier, "goog_max_decode_ms", value, "ms", false);
 171   EXPECT_TRUE(pc_dict.GetString(Statistic("googJitterBufferMs", ssrc), &value));
 172   perf_test::PrintResult(
 173       "video_rx", modifier, "goog_jitter_buffer_ms", value, "ms", false);
 174   EXPECT_TRUE(pc_dict.GetString(Statistic("googRenderDelayMs", ssrc), &value));
 175   perf_test::PrintResult(
 176       "video_rx", modifier, "goog_render_delay_ms", value, "ms", false);
 177
 178   return true;
 179 }
 180
 181 static std::string ExtractSsrcIdentifier(const std::string& key) {
 182   // Example key: ssrc_1234-someStatName. Grab the part before the dash.
 183   size_t key_start_pos = 0;
 184   size_t key_end_pos = key.find("-");
 185   CHECK(key_end_pos != std::string::npos) << "Could not parse key " << key;
 186   return key.substr(key_start_pos, key_end_pos - key_start_pos);
 187 }
 188
 189 // Returns the set of unique ssrc identifiers in the call (e.g. ssrc_1234,
 190 // ssrc_12356, etc). |stats_dict| is the .stats dict from one peer connection.
 191 static std::set<std::string> FindAllSsrcIdentifiers(
 192     const base::DictionaryValue& stats_dict) {
 193   std::set<std::string> result;
 194   base::DictionaryValue::Iterator stats_iterator(stats_dict);
 195
 196   while (!stats_iterator.IsAtEnd()) {
 197     if (stats_iterator.key().find("ssrc_") != std::string::npos)
 198       result.insert(ExtractSsrcIdentifier(stats_iterator.key()));
 199     stats_iterator.Advance();
 200   }
 201   return result;
 202 }
 203
 204 namespace test {
 205
 206 void PrintBweForVideoMetrics(const base::DictionaryValue& pc_dict,
 207                              const std::string& modifier) {
 208   const std::string kBweStatsKey = "bweforvideo";
 209   std::string value;
 210   ASSERT_TRUE(pc_dict.GetString(
 211       Statistic("googAvailableSendBandwidth", kBweStatsKey), &value));
 212   perf_test::PrintResult(
 213       "bwe_stats", modifier, "available_send_bw", value, "bit/s", false);
 214   ASSERT_TRUE(pc_dict.GetString(
 215       Statistic("googAvailableReceiveBandwidth", kBweStatsKey), &value));
 216   perf_test::PrintResult(
 217       "bwe_stats", modifier, "available_recv_bw", value, "bit/s", false);
 218   ASSERT_TRUE(pc_dict.GetString(
 219       Statistic("googTargetEncBitrate", kBweStatsKey), &value));
 220   perf_test::PrintResult(
 221       "bwe_stats", modifier, "target_enc_bitrate", value, "bit/s", false);
 222   ASSERT_TRUE(pc_dict.GetString(
 223       Statistic("googActualEncBitrate", kBweStatsKey), &value));
 224   perf_test::PrintResult(
 225       "bwe_stats", modifier, "actual_enc_bitrate", value, "bit/s", false);
 226   ASSERT_TRUE(pc_dict.GetString(
 227       Statistic("googTransmitBitrate", kBweStatsKey), &value));
 228   perf_test::PrintResult(
 229       "bwe_stats", modifier, "transmit_bitrate", value, "bit/s",false);
 230 }
 231
 232 void PrintMetricsForAllStreams(const base::DictionaryValue& pc_dict,
 233                                const std::string& modifier) {
 234   const base::DictionaryValue* stats_dict;
 235   ASSERT_TRUE(pc_dict.GetDictionary("stats", &stats_dict));
 236   std::set<std::string> ssrc_identifiers = FindAllSsrcIdentifiers(*stats_dict);
 237
 238   std::set<std::string>::const_iterator ssrc_iterator =
 239       ssrc_identifiers.begin();
 240   for (; ssrc_iterator != ssrc_identifiers.end(); ++ssrc_iterator) {
 241     // Figure out which stream type this ssrc represents and print all the
 242     // interesting metrics for it.
 243     const std::string& ssrc = *ssrc_iterator;
 244     bool did_recognize_stream_type =
 245         MaybePrintResultsForAudioReceive(ssrc, pc_dict, modifier) ||
 246         MaybePrintResultsForAudioSend(ssrc, pc_dict, modifier) ||
 247         MaybePrintResultsForVideoReceive(ssrc, pc_dict, modifier) ||
 248         MaybePrintResultsForVideoSend(ssrc, pc_dict, modifier);
 249     ASSERT_TRUE(did_recognize_stream_type) << "Failed to figure out which "
 250                                               "kind of stream SSRC " << ssrc
 251                                            << " is. ";
 252   }
 253 }
 254
 255 }  // namespace test