[DVQA] Add a GetSenderPeerName method.

Change-Id: I2b30510911865150881c116abc2f86be7821f34a
Bug: b/277851637
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/301280
Commit-Queue: Jeremy Leconte <jleconte@webrtc.org>
Reviewed-by: Jeremy Leconte <jleconte@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39875}

api/BUILD.gn

@@ -474,6 +474,7 @@ rtc_source_set("video_quality_analyzer_api") {
   deps = [
     ":array_view",
     ":stats_observer_interface",
+    "../rtc_base:checks",
     "video:encoded_image",
     "video:video_frame",
     "video:video_rtp_headers",

api/test/video_quality_analyzer_interface.h

@@ -21,6 +21,7 @@
 #include "api/video/encoded_image.h"
 #include "api/video/video_frame.h"
 #include "api/video_codecs/video_encoder.h"
+#include "rtc_base/checks.h"
 
 namespace webrtc {
 
@@ -170,6 +171,13 @@ class VideoQualityAnalyzerInterface
   // frame ids space wraps around, then stream label for frame id may change.
   // It will crash, if the specified `frame_id` wasn't captured.
   virtual std::string GetStreamLabel(uint16_t frame_id) = 0;
+
+  // Returns the sender peer name of the last stream where this frame was
+  // captured. The sender for this frame id may change when the frame ids wrap
+  // around. Also it will crash, if the specified `frame_id` wasn't captured.
+  virtual std::string GetSenderPeerName(uint16_t frame_id) const {
+    RTC_CHECK(false) << "Not implemented.";
+  }
 };
 
 }  // namespace webrtc

test/pc/e2e/analyzer/video/default_video_quality_analyzer.cc

@@ -843,19 +843,17 @@ void DefaultVideoQualityAnalyzer::Stop() {
 }
 
 std::string DefaultVideoQualityAnalyzer::GetStreamLabel(uint16_t frame_id) {
-  MutexLock lock1(&mutex_);
-  auto it = captured_frames_in_flight_.find(frame_id);
-  if (it != captured_frames_in_flight_.end()) {
-    return streams_.name(it->second.stream());
+  MutexLock lock(&mutex_);
+  return GetStreamLabelInternal(frame_id);
 }
-  for (auto hist_it = stream_to_frame_id_history_.begin();
-       hist_it != stream_to_frame_id_history_.end(); ++hist_it) {
-    auto hist_set_it = hist_it->second.find(frame_id);
-    if (hist_set_it != hist_it->second.end()) {
-      return streams_.name(hist_it->first);
-    }
-  }
-  RTC_CHECK(false) << "Unknown frame_id=" << frame_id;
+
+std::string DefaultVideoQualityAnalyzer::GetSenderPeerName(
+    uint16_t frame_id) const {
+  MutexLock lock(&mutex_);
+  std::string stream_label = GetStreamLabelInternal(frame_id);
+  size_t stream_index = streams_.index(stream_label);
+  size_t sender_peer_index = stream_states_.at(stream_index).sender();
+  return peers_->name(sender_peer_index);
 }
 
 std::set<StatsKey> DefaultVideoQualityAnalyzer::GetKnownVideoStreams() const {
@@ -1321,6 +1319,22 @@ std::string DefaultVideoQualityAnalyzer::ToMetricName(
   return out.str();
 }
 
+std::string DefaultVideoQualityAnalyzer::GetStreamLabelInternal(
+    uint16_t frame_id) const {
+  auto it = captured_frames_in_flight_.find(frame_id);
+  if (it != captured_frames_in_flight_.end()) {
+    return streams_.name(it->second.stream());
+  }
+  for (auto hist_it = stream_to_frame_id_history_.begin();
+       hist_it != stream_to_frame_id_history_.end(); ++hist_it) {
+    auto hist_set_it = hist_it->second.find(frame_id);
+    if (hist_set_it != hist_it->second.end()) {
+      return streams_.name(hist_it->first);
+    }
+  }
+  RTC_CHECK(false) << "Unknown frame_id=" << frame_id;
+}
+
 double DefaultVideoQualityAnalyzer::GetCpuUsagePercent() {
   return cpu_measurer_.GetCpuUsagePercent();
 }

test/pc/e2e/analyzer/video/default_video_quality_analyzer.h

@@ -89,6 +89,7 @@ class DefaultVideoQualityAnalyzer : public VideoQualityAnalyzerInterface {
 
   void Stop() override;
   std::string GetStreamLabel(uint16_t frame_id) override;
+  std::string GetSenderPeerName(uint16_t frame_id) const override;
   void OnStatsReports(
       absl::string_view pc_label,
       const rtc::scoped_refptr<const RTCStatsReport>& report) override {}
@@ -150,6 +151,8 @@ class DefaultVideoQualityAnalyzer : public VideoQualityAnalyzerInterface {
   // backward compatibility by metrics naming for 2 peers cases.
   std::string ToMetricName(const InternalStatsKey& key) const
       RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+  std::string GetStreamLabelInternal(uint16_t frame_id) const
+      RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
 
   static const uint16_t kStartingFrameId = 1;
 

test/pc/e2e/analyzer/video/default_video_quality_analyzer_test.cc

@@ -2375,5 +2375,38 @@ TEST_F(DefaultVideoQualityAnalyzerSimulatedTimeTest,
   EXPECT_EQ(frame_counters.dropped, 0);
 }
 
+TEST(DefaultVideoQualityAnalyzerTest, CheckFrameSenderPeerName) {
+  constexpr char kAlice[] = "alice";
+  constexpr char kBob[] = "bob";
+  constexpr char kAliceStreamLabel[] = "alice-video";
+  constexpr char kBobStreamLabel[] = "bob-video";
+  std::unique_ptr<test::FrameGeneratorInterface> frame_generator =
+      test::CreateSquareFrameGenerator(kFrameWidth, kFrameHeight,
+                                       /*type=*/absl::nullopt,
+                                       /*num_squares=*/absl::nullopt);
+  DefaultVideoQualityAnalyzer analyzer(Clock::GetRealTimeClock(),
+                                       test::GetGlobalMetricsLogger(),
+                                       AnalyzerOptionsForTest());
+  analyzer.Start("test_case", std::vector<std::string>{kAlice, kBob},
+                 kAnalyzerMaxThreadsCount);
+
+  VideoFrame frame_alice = NextFrame(frame_generator.get(), /*timestamp_us=*/1);
+  VideoFrame frame_bob = NextFrame(frame_generator.get(), /*timestamp_us=*/2);
+  frame_alice.set_id(
+      analyzer.OnFrameCaptured(kAlice, kAliceStreamLabel, frame_alice));
+  frame_bob.set_id(analyzer.OnFrameCaptured(kBob, kBobStreamLabel, frame_bob));
+  std::string sender_alice = analyzer.GetSenderPeerName(frame_alice.id());
+  std::string sender_bob = analyzer.GetSenderPeerName(frame_bob.id());
+
+  // Give analyzer some time to process frames on async thread. The computations
+  // have to be fast (heavy metrics are disabled!), so if doesn't fit 100ms it
+  // means we have an issue!
+  SleepMs(100);
+  analyzer.Stop();
+
+  EXPECT_EQ(sender_alice, kAlice);
+  EXPECT_EQ(sender_bob, kBob);
+}
+
 }  // namespace
 }  // namespace webrtc

test/pc/e2e/analyzer/video/example_video_quality_analyzer.cc

@@ -32,6 +32,7 @@ uint16_t ExampleVideoQualityAnalyzer::OnFrameCaptured(
   if (frame_id == VideoFrame::kNotSetId) {
     frame_id = next_frame_id_++;
   }
+  stream_label_to_peer_name_[stream_label] = std::string(peer_name);
   auto it = frames_in_flight_.find(frame_id);
   if (it == frames_in_flight_.end()) {
     frames_in_flight_.insert(frame_id);
@@ -130,6 +131,15 @@ std::string ExampleVideoQualityAnalyzer::GetStreamLabel(uint16_t frame_id) {
   return it->second;
 }
 
+std::string ExampleVideoQualityAnalyzer::GetSenderPeerName(
+    uint16_t frame_id) const {
+  MutexLock lock(&lock_);
+  auto it = frames_to_stream_label_.find(frame_id);
+  RTC_DCHECK(it != frames_to_stream_label_.end())
+      << "Unknown frame_id=" << frame_id;
+  return stream_label_to_peer_name_.at(it->second);
+}
+
 uint64_t ExampleVideoQualityAnalyzer::frames_captured() const {
   MutexLock lock(&lock_);
   return frames_captured_;

test/pc/e2e/analyzer/video/example_video_quality_analyzer.h

@@ -65,6 +65,7 @@ class ExampleVideoQualityAnalyzer : public VideoQualityAnalyzerInterface {
                       const DecoderStats& stats) override;
   void Stop() override;
   std::string GetStreamLabel(uint16_t frame_id) override;
+  std::string GetSenderPeerName(uint16_t frame_id) const override;
 
   uint64_t frames_captured() const;
   uint64_t frames_pre_encoded() const;
@@ -86,6 +87,8 @@ class ExampleVideoQualityAnalyzer : public VideoQualityAnalyzerInterface {
   // process frame id overlap.
   std::set<uint16_t> frames_in_flight_ RTC_GUARDED_BY(lock_);
   std::map<uint16_t, std::string> frames_to_stream_label_ RTC_GUARDED_BY(lock_);
+  std::map<std::string, std::string> stream_label_to_peer_name_
+      RTC_GUARDED_BY(lock_);
   uint16_t next_frame_id_ RTC_GUARDED_BY(lock_) = 1;
   uint64_t frames_captured_ RTC_GUARDED_BY(lock_) = 0;
   uint64_t frames_pre_encoded_ RTC_GUARDED_BY(lock_) = 0;