Route time-stretching metrics through libjingle

This change connects currentAccelerateRate and currentPreemptiveRate
in webrtc::NetworkStatistics, through corresponding variables in
VoiceReceiverInfo, to googAccelerateRate and googPreemptiveExpandRate.

R=tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/50179004

Cr-Commit-Position: refs/heads/master@{#9350}

talk/app/webrtc/statscollector.cc

@@ -129,6 +129,9 @@ void ExtractStats(const cricket::VoiceReceiverInfo& info, StatsReport* report) {
     { StatsReport::kStatsValueNameSecondaryDecodedRate,
       info.secondary_decoded_rate },
     { StatsReport::kStatsValueNameSpeechExpandRate, info.speech_expand_rate },
+    { StatsReport::kStatsValueNameAccelerateRate, info.accelerate_rate },
+    { StatsReport::kStatsValueNamePreemptiveExpandRate,
+      info.preemptive_expand_rate },
   };
 
   const IntForAdd ints[] = {

talk/app/webrtc/statscollector_unittest.cc

@@ -313,6 +313,12 @@ void VerifyVoiceReceiverInfoReport(
   EXPECT_TRUE(GetValue(
       report, StatsReport::kStatsValueNameSpeechExpandRate, &value_in_report));
   EXPECT_EQ(rtc::ToString<float>(info.speech_expand_rate), value_in_report);
+  EXPECT_TRUE(GetValue(report, StatsReport::kStatsValueNameAccelerateRate,
+                       &value_in_report));
+  EXPECT_EQ(rtc::ToString<float>(info.accelerate_rate), value_in_report);
+  EXPECT_TRUE(GetValue(report, StatsReport::kStatsValueNamePreemptiveExpandRate,
+                       &value_in_report));
+  EXPECT_EQ(rtc::ToString<float>(info.preemptive_expand_rate), value_in_report);
   EXPECT_TRUE(GetValue(report, StatsReport::kStatsValueNameSecondaryDecodedRate,
                        &value_in_report));
   EXPECT_EQ(rtc::ToString<float>(info.secondary_decoded_rate), value_in_report);
@@ -451,6 +457,8 @@ void InitVoiceReceiverInfo(cricket::VoiceReceiverInfo* voice_receiver_info) {
   voice_receiver_info->expand_rate = 121;
   voice_receiver_info->speech_expand_rate = 122;
   voice_receiver_info->secondary_decoded_rate = 123;
+  voice_receiver_info->accelerate_rate = 124;
+  voice_receiver_info->preemptive_expand_rate = 125;
 }
 
 class StatsCollectorForTest : public webrtc::StatsCollector {

talk/app/webrtc/statstypes.cc

@@ -408,6 +408,8 @@ const char* StatsReport::Value::display_name() const {
       return "datachannelid";
 
     // 'goog' prefixed constants.
+    case kStatsValueNameAccelerateRate:
+      return "googAccelerateRate";
     case kStatsValueNameActiveConnection:
       return "googActiveConnection";
     case kStatsValueNameActualEncBitrate:
@@ -544,6 +546,8 @@ const char* StatsReport::Value::display_name() const {
       return "googNacksReceived";
     case kStatsValueNameNacksSent:
       return "googNacksSent";
+    case kStatsValueNamePreemptiveExpandRate:
+      return "googPreemptiveExpandRate";
     case kStatsValueNamePlisReceived:
       return "googPlisReceived";
     case kStatsValueNamePlisSent:

talk/app/webrtc/statstypes.h

@@ -131,6 +131,7 @@ class StatsReport {
     kStatsValueNameTransportId,
 
     // Internal StatsValue names.
+    kStatsValueNameAccelerateRate,
     kStatsValueNameActualEncBitrate,
     kStatsValueNameAdaptationChanges,
     kStatsValueNameAvailableReceiveBandwidth,
@@ -197,6 +198,7 @@ class StatsReport {
     kStatsValueNameNacksSent,
     kStatsValueNamePlisReceived,
     kStatsValueNamePlisSent,
+    kStatsValueNamePreemptiveExpandRate,
     kStatsValueNamePreferredJitterBufferMs,
     kStatsValueNameRemoteAddress,
     kStatsValueNameRemoteCandidateId,

talk/media/base/mediachannel.h

@@ -784,14 +784,15 @@ struct VoiceReceiverInfo : public MediaReceiverInfo {
         expand_rate(0),
         speech_expand_rate(0),
         secondary_decoded_rate(0),
+        accelerate_rate(0),
+        preemptive_expand_rate(0),
         decoding_calls_to_silence_generator(0),
         decoding_calls_to_neteq(0),
         decoding_normal(0),
         decoding_plc(0),
         decoding_cng(0),
         decoding_plc_cng(0),
-        capture_start_ntp_time_ms(-1) {
-  }
+        capture_start_ntp_time_ms(-1) {}
 
   int ext_seqnum;
   int jitter_ms;
@@ -805,6 +806,10 @@ struct VoiceReceiverInfo : public MediaReceiverInfo {
   float speech_expand_rate;
   // fraction of data out of secondary decoding, including FEC and RED.
   float secondary_decoded_rate;
+  // Fraction of data removed through time compression.
+  float accelerate_rate;
+  // Fraction of data inserted through time stretching.
+  float preemptive_expand_rate;
   int decoding_calls_to_silence_generator;
   int decoding_calls_to_neteq;
   int decoding_normal;

talk/media/webrtc/webrtcvoiceengine.cc

@@ -3345,6 +3345,10 @@ bool WebRtcVoiceMediaChannel::GetStats(VoiceMediaInfo* info) {
             static_cast<float>(ns.currentSpeechExpandRate) / (1 << 14);
         rinfo.secondary_decoded_rate =
             static_cast<float>(ns.currentSecondaryDecodedRate) / (1 << 14);
+        rinfo.accelerate_rate =
+            static_cast<float>(ns.currentAccelerateRate) / (1 << 14);
+        rinfo.preemptive_expand_rate =
+            static_cast<float>(ns.currentPreemptiveRate) / (1 << 14);
       }
 
       webrtc::AudioDecodingCallStats ds;

talk/media/webrtc/webrtcvoiceengine_unittest.cc

@@ -2066,6 +2066,12 @@ TEST_F(WebRtcVoiceEngineTestFake, GetStatsWithMultipleSendStreams) {
       (1 << 14), info.receivers[0].speech_expand_rate);
   EXPECT_EQ(static_cast<float>(cricket::kNetStats.currentSecondaryDecodedRate) /
       (1 << 14), info.receivers[0].secondary_decoded_rate);
+  EXPECT_EQ(
+      static_cast<float>(cricket::kNetStats.currentAccelerateRate) / (1 << 14),
+      info.receivers[0].accelerate_rate);
+  EXPECT_EQ(
+      static_cast<float>(cricket::kNetStats.currentPreemptiveRate) / (1 << 14),
+      info.receivers[0].preemptive_expand_rate);
 }
 
 // Test that we can add and remove receive streams, and do proper send/playout.