Enabling Packet-Loss plots for BweReceiver.

Packet-loss computation and plot were added to BweReceiver class.

Objective function and plot were added to PacketReceiver class.

BUG=4550
R=stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/56459004

Cr-Commit-Position: refs/heads/master@{#9391}

webrtc/modules/remote_bitrate_estimator/test/bwe.cc

@@ -22,6 +22,16 @@ namespace webrtc {
 namespace testing {
 namespace bwe {
 
+// With the assumption that packet loss is lower than 97%, the max gap
+// between elements in the set is lower than 0x8000, hence we have a
+// total order in the set. For (x,y,z) subset of the LinkedSet,
+// (x<=y and y<=z) ==> x<=z so the set can be sorted.
+const int kSetCapacity = 1000;
+
+BweReceiver::BweReceiver(int flow_id)
+    : flow_id_(flow_id), received_packets_(kSetCapacity) {
+}
+
 class NullBweSender : public BweSender {
  public:
   NullBweSender() {}
@@ -86,6 +96,98 @@ BweReceiver* CreateBweReceiver(BandwidthEstimatorType type,
   assert(false);
   return NULL;
 }
+
+float BweReceiver::GlobalPacketLossRatio() {
+  if (received_packets_.empty()) {
+    return 0.0f;
+  }
+  // Possibly there are packets missing.
+  const uint16_t kMaxGap = 1.5 * kSetCapacity;
+  uint16_t min = received_packets_.find_min();
+  uint16_t max = received_packets_.find_max();
+
+  int gap;
+  if (max - min < kMaxGap) {
+    gap = max - min + 1;
+  } else {  // There was an overflow.
+    max = received_packets_.upper_bound(kMaxGap);
+    min = received_packets_.lower_bound(0xFFFF - kMaxGap);
+    gap = max + (0xFFFF - min) + 2;
+  }
+  return static_cast<float>(received_packets_.size()) / gap;
+}
+
+// Go through a fixed time window of most recent packets received and
+// counts packets missing to obtain the packet loss ratio. If an unordered
+// packet falls out of the timewindow it will be counted as missing.
+// E.g.: for a timewindow covering 5 packets of the following arrival sequence
+// {10 7 9 5 6} 8 3 2 4 1, the output will be 1/6 (#8 is considered as missing).
+float BweReceiver::RecentPacketLossRatio() {
+  if (received_packets_.empty()) {
+    return 0.0f;
+  }
+  int number_packets_received = 0;
+
+  PacketNodeIt node_it = received_packets_.begin();  // Latest.
+
+  // Lowest timestamp limit, oldest one that should be checked.
+  int64_t time_limit_ms = (*node_it)->arrival_time_ms - kPacketLossTimeWindowMs;
+  // Oldest and newest values found within the given time window.
+  uint16_t oldest_seq_nb = (*node_it)->sequence_number;
+  uint16_t newest_seq_nb = oldest_seq_nb;
+
+  while (node_it != received_packets_.end()) {
+    if ((*node_it)->arrival_time_ms < time_limit_ms) {
+      break;
+    }
+    uint16_t seq_nb = (*node_it)->sequence_number;
+    if (IsNewerSequenceNumber(seq_nb, newest_seq_nb)) {
+      newest_seq_nb = seq_nb;
+    }
+    if (IsNewerSequenceNumber(oldest_seq_nb, seq_nb)) {
+      oldest_seq_nb = seq_nb;
+    }
+    ++node_it;
+    ++number_packets_received;
+  }
+  // Interval width between oldest and newest sequence number.
+  // There was an overflow if newest_seq_nb < oldest_seq_nb.
+  int gap = static_cast<uint16_t>(newest_seq_nb - oldest_seq_nb + 1);
+
+  return static_cast<float>(gap - number_packets_received) / gap;
+}
+
+void LinkedSet::Insert(uint16_t sequence_number,
+                       int64_t send_time_ms,
+                       int64_t arrival_time_ms,
+                       size_t payload_size) {
+  std::map<uint16_t, PacketNodeIt>::iterator it = map_.find(sequence_number);
+  if (it != map_.end()) {
+    PacketNodeIt node_it = it->second;
+    PacketIdentifierNode* node = *node_it;
+    node->arrival_time_ms = arrival_time_ms;
+    if (node_it != list_.begin()) {
+      list_.erase(node_it);
+      list_.push_front(node);
+      map_[sequence_number] = list_.begin();
+    }
+  } else {
+    if (size() == capacity_) {
+      RemoveTail();
+    }
+    UpdateHead(new PacketIdentifierNode(sequence_number, send_time_ms,
+                                        arrival_time_ms, payload_size));
+  }
+}
+void LinkedSet::RemoveTail() {
+  map_.erase(list_.back()->sequence_number);
+  list_.pop_back();
+}
+void LinkedSet::UpdateHead(PacketIdentifierNode* new_head) {
+  list_.push_front(new_head);
+  map_[new_head->sequence_number] = list_.begin();
+}
+
 }  // namespace bwe
 }  // namespace testing
 }  // namespace webrtc

webrtc/modules/remote_bitrate_estimator/test/bwe.h

@@ -20,6 +20,66 @@ namespace webrtc {
 namespace testing {
 namespace bwe {
 
+// Holds only essential information about packets to be saved for
+// further use, e.g. for calculating packet loss and receiving rate.
+struct PacketIdentifierNode {
+  PacketIdentifierNode(uint16_t sequence_number,
+                       int64_t send_time_ms,
+                       int64_t arrival_time_ms,
+                       size_t payload_size)
+      : sequence_number(sequence_number),
+        send_time_ms(send_time_ms),
+        arrival_time_ms(arrival_time_ms),
+        payload_size(payload_size) {}
+
+  uint16_t sequence_number;
+  int64_t send_time_ms;
+  int64_t arrival_time_ms;
+  size_t payload_size;
+};
+
+typedef std::list<PacketIdentifierNode*>::iterator PacketNodeIt;
+
+// FIFO implementation for a limited capacity set.
+// Used for keeping the latest arrived packets while avoiding duplicates.
+// Allows efficient insertion, deletion and search.
+class LinkedSet {
+ public:
+  explicit LinkedSet(int capacity) : capacity_(capacity) {}
+
+  // If the arriving packet (identified by its sequence number) is already
+  // in the LinkedSet, move its Node to the head of the list. Else, create
+  // a PacketIdentifierNode n_ and then UpdateHead(n_), calling RemoveTail()
+  // if the LinkedSet reached its maximum capacity.
+  void Insert(uint16_t sequence_number,
+              int64_t send_time_ms,
+              int64_t arrival_time_ms,
+              size_t payload_size);
+
+  PacketNodeIt begin() { return list_.begin(); }
+  PacketNodeIt end() { return list_.end(); }
+  bool empty() { return list_.empty(); }
+  size_t size() { return list_.size(); }
+  // Gets the latest arrived sequence number.
+  uint16_t find_max() { return map_.rbegin()->first; }
+  // Gets the first arrived sequence number still saved in the LinkedSet.
+  uint16_t find_min() { return map_.begin()->first; }
+  // Gets the lowest saved sequence number that is >= than the input key.
+  uint16_t lower_bound(uint16_t key) { return map_.lower_bound(key)->first; }
+  // Gets the highest saved sequence number that is <= than the input key.
+  uint16_t upper_bound(uint16_t key) { return map_.upper_bound(key)->first; }
+  size_t capacity() { return capacity_; }
+
+ private:
+  // Pop oldest element from the back of the list and remove it from the map.
+  void RemoveTail();
+  // Add new element to the front of the list and insert it in the map.
+  void UpdateHead(PacketIdentifierNode* new_head);
+  size_t capacity_;
+  std::map<uint16_t, PacketNodeIt> map_;
+  std::list<PacketIdentifierNode*> list_;
+};
+
 const int kMinBitrateKbps = 150;
 const int kMaxBitrateKbps = 3000;
 
@@ -38,15 +98,23 @@ class BweSender : public Module {
 
 class BweReceiver {
  public:
-  explicit BweReceiver(int flow_id) : flow_id_(flow_id) {}
+  explicit BweReceiver(int flow_id);
   virtual ~BweReceiver() {}
 
   virtual void ReceivePacket(int64_t arrival_time_ms,
                              const MediaPacket& media_packet) {}
   virtual FeedbackPacket* GetFeedback(int64_t now_ms) { return NULL; }
 
+  float GlobalPacketLossRatio();
+  float RecentPacketLossRatio();
+  size_t GetSetCapacity() { return received_packets_.capacity(); }
+
+  static const int64_t kPacketLossTimeWindowMs = 500;
+
  protected:
   int flow_id_;
+  // Deals with packets sent more than once.
+  LinkedSet received_packets_;
 };
 
 enum BandwidthEstimatorType {

webrtc/modules/remote_bitrate_estimator/test/estimators/nada.cc

@@ -28,10 +28,9 @@ namespace testing {
 namespace bwe {
 
 const int NadaBweReceiver::kMedian;
-const int64_t NadaBweReceiver::kPacketLossTimeWindowMs;
-const int64_t NadaBweReceiver::kReceivingRateTimeWindowMs;
 const int NadaBweSender::kMinRefRateKbps;
 const int NadaBweSender::kMaxRefRateKbps;
+const int64_t NadaBweReceiver::kReceivingRateTimeWindowMs;
 
 NadaBweReceiver::NadaBweReceiver(int flow_id)
     : BweReceiver(flow_id),
@@ -84,9 +83,9 @@ void NadaBweReceiver::ReceivePacket(int64_t arrival_time_ms,
     est_queuing_delay_signal_ms_ = 0;
   }
 
-  received_packets_->Insert(media_packet.sequence_number(),
-                            media_packet.send_time_ms(), arrival_time_ms,
-                            media_packet.payload_size());
+  received_packets_.Insert(media_packet.sequence_number(),
+                           media_packet.send_time_ms(), arrival_time_ms,
+                           media_packet.payload_size());
 }
 
 FeedbackPacket* NadaBweReceiver::GetFeedback(int64_t now_ms) {
@@ -110,7 +109,7 @@ FeedbackPacket* NadaBweReceiver::GetFeedback(int64_t now_ms) {
   last_feedback_ms_ = now_ms;
   last_congestion_signal_ms_ = congestion_signal_ms;
 
-  PacketIdentifierNode* latest = *(received_packets_->begin());
+  PacketIdentifierNode* latest = *(received_packets_.begin());
   int64_t corrected_send_time_ms =
       latest->send_time_ms + now_ms - latest->arrival_time_ms;
 
@@ -122,83 +121,22 @@ FeedbackPacket* NadaBweReceiver::GetFeedback(int64_t now_ms) {
                           corrected_send_time_ms);
 }
 
-float NadaBweReceiver::GlobalPacketLossRatio() {
-  if (received_packets_->empty()) {
-    return 0.0f;
-  }
-  // Possibly there are packets missing.
-  const uint16_t kMaxGap = 1.5 * kSetCapacity;
-  uint16_t min = received_packets_->find_min();
-  uint16_t max = received_packets_->find_max();
-
-  int gap;
-  if (max - min < kMaxGap) {
-    gap = max - min + 1;
-  } else {  // There was an overflow.
-    max = received_packets_->upper_bound(kMaxGap);
-    min = received_packets_->lower_bound(0xFFFF - kMaxGap);
-    gap = max + (0xFFFF - min) + 2;
-  }
-  return static_cast<float>(received_packets_->size()) / gap;
-}
-
-// Go through a fixed time window of most recent packets received and
-// counts packets missing to obtain the packet loss ratio. If an unordered
-// packet falls out of the timewindow it will be counted as missing.
-// E.g.: for a timewindow covering 5 packets of the following arrival sequence
-// {10 7 9 5 6} 8 3 2 4 1, the output will be 1/6 (#8 is considered as missing).
-float NadaBweReceiver::RecentPacketLossRatio() {
-
-  if (received_packets_->empty()) {
-    return 0.0f;
-  }
-  int number_packets_received = 0;
-
-  PacketNodeIt node_it = received_packets_->begin();  // Latest.
-
-  // Lowest timestamp limit, oldest one that should be checked.
-  int64_t time_limit_ms = (*node_it)->arrival_time_ms - kPacketLossTimeWindowMs;
-  // Oldest and newest values found within the given time window.
-  uint16_t oldest_seq_nb = (*node_it)->sequence_number;
-  uint16_t newest_seq_nb = oldest_seq_nb;
-
-  while (node_it != received_packets_->end()) {
-    if ((*node_it)->arrival_time_ms < time_limit_ms) {
-      break;
-    }
-    uint16_t seq_nb = (*node_it)->sequence_number;
-    if (IsNewerSequenceNumber(seq_nb, newest_seq_nb)) {
-      newest_seq_nb = seq_nb;
-    }
-    if (IsNewerSequenceNumber(oldest_seq_nb, seq_nb)) {
-      oldest_seq_nb = seq_nb;
-    }
-    ++node_it;
-    ++number_packets_received;
-  }
-  // Interval width between oldest and newest sequence number.
-  // There was an overflow if newest_seq_nb < oldest_seq_nb.
-  int gap = static_cast<uint16_t>(newest_seq_nb - oldest_seq_nb + 1);
-
-  return static_cast<float>(gap - number_packets_received) / gap;
-}
-
 // For a given time window, compute the receiving speed rate in kbps.
 // As described below, three cases are considered depending on the number of
 // packets received.
 size_t NadaBweReceiver::RecentReceivingRate() {
   // If the receiver didn't receive any packet, return 0.
-  if (received_packets_->empty()) {
+  if (received_packets_.empty()) {
     return 0.0f;
   }
   size_t total_size = 0;
   int number_packets = 0;
 
-  PacketNodeIt node_it = received_packets_->begin();
+  PacketNodeIt node_it = received_packets_.begin();
 
   int64_t last_time_ms = (*node_it)->arrival_time_ms;
   int64_t start_time_ms = last_time_ms;
-  PacketNodeIt end = received_packets_->end();
+  PacketNodeIt end = received_packets_.end();
 
   // Stops after including the first packet out of the timeWindow.
   // Ameliorates results when there are wide gaps between packets.
@@ -218,13 +156,14 @@ size_t NadaBweReceiver::RecentReceivingRate() {
   // If the receiver received a single packet, return its size*8/timeWindow.
   if (number_packets == 1) {
     corrected_time_ms = kReceivingRateTimeWindowMs;
-  } else {
-    // If the receiver received multiple packets, use as time interval the gap
-    // between first and last packet falling in the timeWindow corrected by the
-    // factor number_packets/(number_packets-1).
-    // E.g: Let timeWindow = 500ms, payload_size = 500bytes, number_packets=2,
-    // packets received at t1(0ms) and t2(499 or 501ms). This prevent the
-    // function from returning ~2*8, sending instead a more likely ~1*8 kbps.
+  }
+  // If the receiver received multiple packets, use as time interval the gap
+  // between first and last packet falling in the timeWindow corrected by the
+  // factor number_packets/(number_packets-1).
+  // E.g: Let timeWindow = 500ms, payload_size = 500 bytes, number_packets = 2,
+  // packets received at t1(0ms) and t2(499 or 501ms). This prevent the function
+  // from returning ~2*8, sending instead a more likely ~1*8 kbps.
+  else {
     corrected_time_ms = (number_packets * (start_time_ms - last_time_ms)) /
                         (number_packets - 1);
   }
@@ -383,37 +322,6 @@ void NadaBweSender::GradualRateUpdate(const NadaFeedback& fb,
   bitrate_kbps_ = bitrate_kbps_ + smoothing_factor * original_increase;
 }
 
-void LinkedSet::Insert(uint16_t sequence_number,
-                       int64_t send_time_ms,
-                       int64_t arrival_time_ms,
-                       size_t payload_size) {
-  std::map<uint16_t, PacketNodeIt>::iterator it = map_.find(sequence_number);
-  if (it != map_.end()) {
-    PacketNodeIt node_it = it->second;
-    PacketIdentifierNode* node = *node_it;
-    node->arrival_time_ms = arrival_time_ms;
-    if (node_it != list_.begin()) {
-      list_.erase(node_it);
-      list_.push_front(node);
-      map_[sequence_number] = list_.begin();
-    }
-  } else {
-    if (size() == capacity_) {
-      RemoveTail();
-    }
-    UpdateHead(new PacketIdentifierNode(sequence_number, send_time_ms,
-                                        arrival_time_ms, payload_size));
-  }
-}
-void LinkedSet::RemoveTail() {
-  map_.erase(list_.back()->sequence_number);
-  list_.pop_back();
-}
-void LinkedSet::UpdateHead(PacketIdentifierNode* new_head) {
-  list_.push_front(new_head);
-  map_[new_head->sequence_number] = list_.begin();
-}
-
 }  // namespace bwe
 }  // namespace testing
 }  // namespace webrtc

webrtc/modules/remote_bitrate_estimator/test/estimators/nada.h

@@ -31,65 +31,6 @@ class ReceiveStatistics;
 namespace testing {
 namespace bwe {
 
-// Holds only essential information about packets to be saved for
-// further use, e.g. for calculating packet loss and receiving rate.
-struct PacketIdentifierNode {
-  PacketIdentifierNode(uint16_t sequence_number,
-                       int64_t send_time_ms,
-                       int64_t arrival_time_ms,
-                       size_t payload_size)
-      : sequence_number(sequence_number),
-        send_time_ms(send_time_ms),
-        arrival_time_ms(arrival_time_ms),
-        payload_size(payload_size) {}
-
-  uint16_t sequence_number;
-  int64_t send_time_ms;
-  int64_t arrival_time_ms;
-  size_t payload_size;
-};
-
-typedef std::list<PacketIdentifierNode*>::iterator PacketNodeIt;
-
-// FIFO implementation for a limited capacity set.
-// Used for keeping the latest arrived packets while avoiding duplicates.
-// Allows efficient insertion, deletion and search.
-class LinkedSet {
- public:
-  explicit LinkedSet(size_t capacity) : capacity_(capacity) {}
-
-  // If the arriving packet (identified by its sequence number) is already
-  // in the LinkedSet, move its Node to the head of the list. Else, create
-  // a PacketIdentifierNode n_ and then UpdateHead(n_), calling RemoveTail()
-  // if the LinkedSet reached its maximum capacity.
-  void Insert(uint16_t sequence_number,
-              int64_t send_time_ms,
-              int64_t arrival_time_ms,
-              size_t payload_size);
-
-  PacketNodeIt begin() { return list_.begin(); }
-  PacketNodeIt end() { return list_.end(); }
-  bool empty() { return list_.empty(); }
-  size_t size() { return list_.size(); }
-  // Gets the latest arrived sequence number.
-  uint16_t find_max() { return map_.rbegin()->first; }
-  // Gets the first arrived sequence number still saved in the LinkedSet.
-  uint16_t find_min() { return map_.begin()->first; }
-  // Gets the lowest saved sequence number that is >= than the input key.
-  uint16_t lower_bound(uint16_t key) { return map_.lower_bound(key)->first; }
-  // Gets the highest saved sequence number that is <= than the input key.
-  uint16_t upper_bound(uint16_t key) { return map_.upper_bound(key)->first; }
-
- private:
-  // Pop oldest element from the back of the list and remove it from the map.
-  void RemoveTail();
-  // Add new element to the front of the list and insert it in the map.
-  void UpdateHead(PacketIdentifierNode* new_head);
-  size_t capacity_;
-  std::map<uint16_t, PacketNodeIt> map_;
-  std::list<PacketIdentifierNode*> list_;
-};
-
 class NadaBweReceiver : public BweReceiver {
  public:
   explicit NadaBweReceiver(int flow_id);
@@ -98,20 +39,13 @@ class NadaBweReceiver : public BweReceiver {
   void ReceivePacket(int64_t arrival_time_ms,
                      const MediaPacket& media_packet) override;
   FeedbackPacket* GetFeedback(int64_t now_ms) override;
-  float GlobalPacketLossRatio();
-  float RecentPacketLossRatio();
+
   size_t RecentReceivingRate();
   static int64_t MedianFilter(int64_t* v, int size);
   static int64_t ExponentialSmoothingFilter(int64_t new_value,
                                             int64_t last_smoothed_value,
                                             float alpha);
 
-  // With the assumption that packet loss is lower than 97%, the max gap
-  // between elements in the set is lower than 0x8000, hence we have a
-  // total order in the set. For (x,y,z) subset of the LinkedSet,
-  // (x<=y and y<=z) ==> x<=z so the set can be sorted.
-  static const int kSetCapacity = 1000;
-  static const int64_t kPacketLossTimeWindowMs = 500;
   static const int64_t kReceivingRateTimeWindowMs = 500;
 
  private:
@@ -125,8 +59,6 @@ class NadaBweReceiver : public BweReceiver {
   int64_t exp_smoothed_delay_ms_;        // Referred as d_hat_n.
   int64_t est_queuing_delay_signal_ms_;  // Referred as d_tilde_n.
 
-  // Deals with packets sent more than once.
-  LinkedSet* received_packets_ = new LinkedSet(kSetCapacity);
   static const int kMedian = 5;      // Used for k-points Median Filter.
   int64_t last_delays_ms_[kMedian];  // Used for Median Filter.
 };

webrtc/modules/remote_bitrate_estimator/test/estimators/nada_unittest.cc

@@ -435,7 +435,7 @@ TEST_F(NadaReceiverSideTest, PacketLossSinglePacket) {
 
 TEST_F(NadaReceiverSideTest, PacketLossContiguousPackets) {
   const int64_t kTimeWindowMs = NadaBweReceiver::kPacketLossTimeWindowMs;
-  const int kSetCapacity = NadaBweReceiver::kSetCapacity;
+  size_t set_capacity = nada_receiver_.GetSetCapacity();
 
   for (int i = 0; i < 10; ++i) {
     uint16_t sequence_number = static_cast<uint16_t>(i);
@@ -465,7 +465,7 @@ TEST_F(NadaReceiverSideTest, PacketLossContiguousPackets) {
   EXPECT_EQ(nada_receiver_.RecentPacketLossRatio(), 0.0f);
 
   // Should handle set overflow.
-  for (int i = 0; i < kSetCapacity * 1.5; ++i) {
+  for (int i = 0; i < set_capacity * 1.5; ++i) {
     uint16_t sequence_number = static_cast<uint16_t>(i);
     const MediaPacket media_packet(kFlowId, 0, 0, sequence_number);
     // Only the packets sent in this for loop will be considered.
@@ -503,11 +503,11 @@ TEST_F(NadaReceiverSideTest, PacketLossDuplicatedPackets) {
 }
 
 TEST_F(NadaReceiverSideTest, PacketLossLakingPackets) {
-  const int kSetCapacity = NadaBweReceiver::kSetCapacity;
-  EXPECT_LT(kSetCapacity, 0xFFFF);
+  size_t set_capacity = nada_receiver_.GetSetCapacity();
+  EXPECT_LT(set_capacity, static_cast<size_t>(0xFFFF));
 
   // Missing every other packet.
-  for (int i = 0; i < kSetCapacity; ++i) {
+  for (size_t i = 0; i < set_capacity; ++i) {
     if ((i & 1) == 0) {  // Only even sequence numbers.
       uint16_t sequence_number = static_cast<uint16_t>(i);
       const MediaPacket media_packet(kFlowId, 0, 0, sequence_number);
@@ -519,12 +519,12 @@ TEST_F(NadaReceiverSideTest, PacketLossLakingPackets) {
 }
 
 TEST_F(NadaReceiverSideTest, PacketLossLakingFewPackets) {
-  const int kSetCapacity = NadaBweReceiver::kSetCapacity;
-  EXPECT_LT(kSetCapacity, 0xFFFF);
+  size_t set_capacity = nada_receiver_.GetSetCapacity();
+  EXPECT_LT(set_capacity, static_cast<size_t>(0xFFFF));
 
   const int kPeriod = 100;
   // Missing one for each kPeriod packets.
-  for (int i = 0; i < kSetCapacity; ++i) {
+  for (size_t i = 0; i < set_capacity; ++i) {
     if ((i % kPeriod) != 0) {
       uint16_t sequence_number = static_cast<uint16_t>(i);
       const MediaPacket media_packet(kFlowId, 0, 0, sequence_number);
@@ -557,16 +557,16 @@ TEST_F(NadaReceiverSideTest, PacketLossWideGap) {
 
 // Packets arriving unordered should not be counted as losted.
 TEST_F(NadaReceiverSideTest, PacketLossUnorderedPackets) {
-  const int kNumPackets = NadaBweReceiver::kSetCapacity / 2;
+  int num_packets = nada_receiver_.GetSetCapacity() / 2;
   std::vector<uint16_t> sequence_numbers;
 
-  for (int i = 0; i < kNumPackets; ++i) {
+  for (int i = 0; i < num_packets; ++i) {
     sequence_numbers.push_back(static_cast<uint16_t>(i + 1));
   }
 
   random_shuffle(sequence_numbers.begin(), sequence_numbers.end());
 
-  for (int i = 0; i < kNumPackets; ++i) {
+  for (int i = 0; i < num_packets; ++i) {
     const MediaPacket media_packet(kFlowId, 0, 0, sequence_numbers[i]);
     // Arrival time = 0, all packets will be considered.
     nada_receiver_.ReceivePacket(0, media_packet);

webrtc/modules/remote_bitrate_estimator/test/estimators/remb.cc

@@ -99,6 +99,10 @@ void RembReceiver::ReceivePacket(int64_t arrival_time_ms,
                              media_packet.header());
   clock_.AdvanceTimeMilliseconds(arrival_time_ms - clock_.TimeInMilliseconds());
   ASSERT_TRUE(arrival_time_ms == clock_.TimeInMilliseconds());
+
+  received_packets_.Insert(media_packet.sequence_number(),
+                           media_packet.send_time_ms(), arrival_time_ms,
+                           media_packet.payload_size());
 }
 
 FeedbackPacket* RembReceiver::GetFeedback(int64_t now_ms) {

webrtc/modules/remote_bitrate_estimator/test/estimators/send_side.cc

@@ -127,6 +127,10 @@ void SendSideBweReceiver::ReceivePacket(int64_t arrival_time_ms,
   packet_feedback_vector_.push_back(PacketInfo(
       arrival_time_ms, media_packet.sender_timestamp_us() / 1000,
       media_packet.header().sequenceNumber, media_packet.payload_size()));
+
+  received_packets_.Insert(media_packet.sequence_number(),
+                           media_packet.send_time_ms(), arrival_time_ms,
+                           media_packet.payload_size());
 }
 
 FeedbackPacket* SendSideBweReceiver::GetFeedback(int64_t now_ms) {

webrtc/modules/remote_bitrate_estimator/test/estimators/tcp.cc

@@ -35,6 +35,10 @@ void TcpBweReceiver::ReceivePacket(int64_t arrival_time_ms,
                                    const MediaPacket& media_packet) {
   latest_owd_ms_ = arrival_time_ms - media_packet.sender_timestamp_us() / 1000;
   acks_.push_back(media_packet.header().sequenceNumber);
+
+  received_packets_.Insert(media_packet.sequence_number(),
+                           media_packet.send_time_ms(), arrival_time_ms,
+                           media_packet.payload_size());
 }
 
 FeedbackPacket* TcpBweReceiver::GetFeedback(int64_t now_ms) {

webrtc/modules/remote_bitrate_estimator/test/packet_receiver.cc

@@ -10,6 +10,7 @@
 
 #include "webrtc/modules/remote_bitrate_estimator/test/packet_receiver.h"
 
+#include <math.h>
 #include <vector>
 
 #include "testing/gtest/include/gtest/gtest.h"
@@ -31,13 +32,32 @@ PacketReceiver::PacketReceiver(PacketProcessorListener* listener,
                                bool plot_bwe)
     : PacketProcessor(listener, flow_id, kReceiver),
       delay_log_prefix_(),
+      metric_log_prefix_(),
+      packet_loss_log_prefix_(),
       last_delay_plot_ms_(0),
+      last_metric_plot_ms_(0),
+      last_packet_loss_plot_ms_(0),
       plot_delay_(plot_delay),
-      bwe_receiver_(CreateBweReceiver(bwe_type, flow_id, plot_bwe)) {
+      // TODO(magalhaesc) Add separated plot_objective_function and
+      // plot_packet_loss parameters to the constructor.
+      plot_objective_function_(plot_delay),
+      plot_packet_loss_(plot_delay),
+      bwe_receiver_(CreateBweReceiver(bwe_type, flow_id, plot_bwe)),
+      total_delay_ms_(0),
+      total_throughput_(0),
+      number_packets_(0) {
   // Setup the prefix ststd::rings used when logging.
-  std::stringstream ss;
-  ss << "Delay_" << flow_id << "#2";
-  delay_log_prefix_ = ss.str();
+  std::stringstream ss1;
+  ss1 << "Delay_" << flow_id << "#2";
+  delay_log_prefix_ = ss1.str();
+
+  std::stringstream ss2;
+  ss2 << "Objective_function_" << flow_id << "#2";
+  metric_log_prefix_ = ss2.str();
+
+  std::stringstream ss3;
+  ss3 << "Packet_Loss_" << flow_id << "#2";
+  packet_loss_log_prefix_ = ss3.str();
 }
 
 PacketReceiver::~PacketReceiver() {
@@ -61,6 +81,12 @@ void PacketReceiver::RunFor(int64_t time_ms, Packets* in_out) {
       int64_t send_time_ms = (media_packet->creation_time_us() + 500) / 1000;
       delay_stats_.Push(arrival_time_ms - send_time_ms);
       PlotDelay(arrival_time_ms, send_time_ms);
+      PlotObjectiveFunction(arrival_time_ms);
+      PlotPacketLoss(arrival_time_ms);
+
+      total_delay_ms_ += arrival_time_ms - send_time_ms;
+      total_throughput_ += media_packet->payload_size();
+      ++number_packets_;
 
       bwe_receiver_->ReceivePacket(arrival_time_ms, *media_packet);
       FeedbackPacket* fb = bwe_receiver_->GetFeedback(arrival_time_ms);
@@ -87,6 +113,37 @@ void PacketReceiver::PlotDelay(int64_t arrival_time_ms, int64_t send_time_ms) {
   }
 }
 
+double PacketReceiver::ObjectiveFunction() {
+  const double kDelta = 1.0;  // Delay penalty factor.
+  double throughput_metric = log(static_cast<double>(total_throughput_));
+  double delay_penalty = kDelta * log(static_cast<double>(total_delay_ms_));
+  return throughput_metric - delay_penalty;
+}
+
+void PacketReceiver::PlotObjectiveFunction(int64_t arrival_time_ms) {
+  static const int kMetricPlotIntervalMs = 1000;
+  if (!plot_objective_function_) {
+    return;
+  }
+  if (arrival_time_ms - last_metric_plot_ms_ > kMetricPlotIntervalMs) {
+    BWE_TEST_LOGGING_PLOT(1, metric_log_prefix_, arrival_time_ms,
+                          ObjectiveFunction());
+    last_metric_plot_ms_ = arrival_time_ms;
+  }
+}
+
+void PacketReceiver::PlotPacketLoss(int64_t arrival_time_ms) {
+  static const int kPacketLossPlotIntervalMs = 500;
+  if (!plot_packet_loss_) {
+    return;
+  }
+  if (arrival_time_ms - last_packet_loss_plot_ms_ > kPacketLossPlotIntervalMs) {
+    BWE_TEST_LOGGING_PLOT(2, packet_loss_log_prefix_, arrival_time_ms,
+                          bwe_receiver_->RecentPacketLossRatio());
+    last_packet_loss_plot_ms_ = arrival_time_ms;
+  }
+}
+
 Stats<double> PacketReceiver::GetDelayStats() const {
   return delay_stats_;
 }

webrtc/modules/remote_bitrate_estimator/test/packet_receiver.h

@@ -40,14 +40,27 @@ class PacketReceiver : public PacketProcessor {
 
  protected:
   void PlotDelay(int64_t arrival_time_ms, int64_t send_time_ms);
+  void PlotObjectiveFunction(int64_t arrival_time_ms);
+  void PlotPacketLoss(int64_t arrival_time_ms);
+  double ObjectiveFunction();
 
   int64_t now_ms_;
   std::string delay_log_prefix_;
+  std::string metric_log_prefix_;
+  std::string packet_loss_log_prefix_;
   int64_t last_delay_plot_ms_;
+  int64_t last_metric_plot_ms_;
+  int64_t last_packet_loss_plot_ms_;
   bool plot_delay_;
+  bool plot_objective_function_;
+  bool plot_packet_loss_;
   Stats<double> delay_stats_;
   rtc::scoped_ptr<BweReceiver> bwe_receiver_;
 
+  int64_t total_delay_ms_;
+  size_t total_throughput_;
+  int number_packets_;
+
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PacketReceiver);
 };