Add new RTC event log encoding for AudioPlayout and DelayBasedBwe events.

Bug: webrtc:11933
Change-Id: Ia54d973099916c8dba9fedf362f25e46fe5cc541
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/246204
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Commit-Queue: Björn Terelius <terelius@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35959}

logging/BUILD.gn

@@ -85,7 +85,10 @@ rtc_library("rtc_event_pacing") {
     "../api/rtc_event_log",
     "../api/units:timestamp",
   ]
-  absl_deps = [ "//third_party/abseil-cpp/absl/memory" ]
+  absl_deps = [
+    "//third_party/abseil-cpp/absl/memory",
+    "//third_party/abseil-cpp/absl/strings",
+  ]
 }
 
 rtc_library("rtc_event_audio") {
@@ -101,13 +104,17 @@ rtc_library("rtc_event_audio") {
   ]
 
   deps = [
+    ":rtc_event_field",
     ":rtc_stream_config",
     "../api/rtc_event_log",
     "../api/units:timestamp",
     "../modules/audio_coding:audio_network_adaptor_config",
     "../rtc_base:checks",
   ]
-  absl_deps = [ "//third_party/abseil-cpp/absl/memory" ]
+  absl_deps = [
+    "//third_party/abseil-cpp/absl/memory",
+    "//third_party/abseil-cpp/absl/strings",
+  ]
 }
 
 rtc_library("rtc_event_begin_end") {
@@ -144,6 +151,7 @@ rtc_library("rtc_event_bwe") {
   ]
 
   deps = [
+    ":rtc_event_field",
     "../api:network_state_predictor_api",
     "../api/rtc_event_log",
     "../api/units:data_rate",
@@ -151,6 +159,7 @@ rtc_library("rtc_event_bwe") {
   ]
   absl_deps = [
     "//third_party/abseil-cpp/absl/memory",
+    "//third_party/abseil-cpp/absl/strings",
     "//third_party/abseil-cpp/absl/types:optional",
   ]
 }

logging/rtc_event_log/encoder/rtc_event_log_encoder_v3.cc

@@ -75,6 +75,9 @@ std::string RtcEventLogEncoderV3::EncodeLogEnd(int64_t timestamp_us) {
 
 RtcEventLogEncoderV3::RtcEventLogEncoderV3() {
   encoders_[RtcEvent::Type::AlrStateEvent] = RtcEventAlrState::Encode;
+  encoders_[RtcEvent::Type::AudioPlayout] = RtcEventAudioPlayout::Encode;
+  encoders_[RtcEvent::Type::BweUpdateDelayBased] =
+      RtcEventBweUpdateDelayBased::Encode;
 }
 
 std::string RtcEventLogEncoderV3::EncodeBatch(

logging/rtc_event_log/events/rtc_event_alr_state.h

@@ -15,6 +15,7 @@
 #include <string>
 #include <vector>
 
+#include "absl/strings/string_view.h"
 #include "api/rtc_event_log/rtc_event.h"
 #include "api/units/timestamp.h"
 #include "logging/rtc_event_log/events/rtc_event_definition.h"

logging/rtc_event_log/events/rtc_event_audio_playout.cc

@@ -14,6 +14,11 @@
 
 namespace webrtc {
 
+constexpr RtcEventDefinition<RtcEventAudioPlayout,
+                             LoggedAudioPlayoutEvent,
+                             uint32_t>
+    RtcEventAudioPlayout::definition_;
+
 RtcEventAudioPlayout::RtcEventAudioPlayout(uint32_t ssrc) : ssrc_(ssrc) {}
 
 RtcEventAudioPlayout::RtcEventAudioPlayout(const RtcEventAudioPlayout& other)

logging/rtc_event_log/events/rtc_event_audio_playout.h

@@ -13,10 +13,15 @@
 
 #include <stdint.h>
 
+#include <map>
 #include <memory>
+#include <string>
+#include <vector>
 
+#include "absl/strings/string_view.h"
 #include "api/rtc_event_log/rtc_event.h"
 #include "api/units/timestamp.h"
+#include "logging/rtc_event_log/events/rtc_event_definition.h"
 
 namespace webrtc {
 
@@ -46,10 +51,35 @@ class RtcEventAudioPlayout final : public RtcEvent {
 
   uint32_t ssrc() const { return ssrc_; }
 
+  static std::string Encode(rtc::ArrayView<const RtcEvent*> batch) {
+    return RtcEventAudioPlayout::definition_.EncodeBatch(batch);
+  }
+
+  static RtcEventLogParseStatus Parse(
+      absl::string_view s,
+      bool batched,
+      std::map<uint32_t, std::vector<LoggedAudioPlayoutEvent>>& output) {
+    std::vector<LoggedAudioPlayoutEvent> temp_output;
+    auto status =
+        RtcEventAudioPlayout::definition_.ParseBatch(s, batched, temp_output);
+    for (const LoggedAudioPlayoutEvent& event : temp_output) {
+      output[event.ssrc].push_back(event);
+    }
+    return status;
+  }
+
  private:
   RtcEventAudioPlayout(const RtcEventAudioPlayout& other);
 
   const uint32_t ssrc_;
+
+  static constexpr RtcEventDefinition<RtcEventAudioPlayout,
+                                      LoggedAudioPlayoutEvent,
+                                      uint32_t>
+      definition_{{"AudioPlayout", RtcEventAudioPlayout::kType},
+                  {&RtcEventAudioPlayout::ssrc_,
+                   &LoggedAudioPlayoutEvent::ssrc,
+                   {"ssrc", /*id=*/1, FieldType::kFixed32, /*width=*/32}}};
 };
 
 }  // namespace webrtc

logging/rtc_event_log/events/rtc_event_begin_log.cc

@@ -54,14 +54,18 @@ RtcEventLogParseStatus RtcEventBeginLog::Parse(
       parser.ParseNumericField(timestamp_params);
   if (!result.ok())
     return result.status();
-  PopulateRtcEventTimestamp(result.value(), &LoggedStartEvent::timestamp,
-                            output_batch);
+  status = PopulateRtcEventTimestamp(
+      result.value(), &LoggedStartEvent::timestamp, output_batch);
+  if (!status.ok())
+    return status;
 
   result = parser.ParseNumericField(utc_start_time_params_);
   if (!result.ok())
     return result.status();
-  PopulateRtcEventTimestamp(result.value(), &LoggedStartEvent::utc_start_time,
-                            output_batch);
+  status = PopulateRtcEventTimestamp(
+      result.value(), &LoggedStartEvent::utc_start_time, output_batch);
+  if (!status.ok())
+    return status;
 
   return RtcEventLogParseStatus::Success();
 }

logging/rtc_event_log/events/rtc_event_bwe_update_delay_based.cc

@@ -15,6 +15,12 @@
 
 namespace webrtc {
 
+constexpr RtcEventDefinition<RtcEventBweUpdateDelayBased,
+                             LoggedBweDelayBasedUpdate,
+                             int32_t,
+                             BandwidthUsage>
+    RtcEventBweUpdateDelayBased::definition_;
+
 RtcEventBweUpdateDelayBased::RtcEventBweUpdateDelayBased(
     int32_t bitrate_bps,
     BandwidthUsage detector_state)

logging/rtc_event_log/events/rtc_event_bwe_update_delay_based.h

@@ -13,14 +13,58 @@
 
 #include <stdint.h>
 
+#include <limits>
 #include <memory>
+#include <string>
+#include <vector>
 
+#include "absl/strings/string_view.h"
 #include "api/network_state_predictor.h"
 #include "api/rtc_event_log/rtc_event.h"
 #include "api/units/timestamp.h"
+#include "logging/rtc_event_log/events/rtc_event_definition.h"
 
 namespace webrtc {
 
+// Separate the event log encoding from the enum values.
+// As long as the enum values are the same as the encodings,
+// the two conversion functions can be compiled to (roughly)
+// a range check each.
+template <>
+class RtcEventLogEnum<BandwidthUsage> {
+  static constexpr uint64_t kBwNormal = 0;
+  static constexpr uint64_t kBwUnderusing = 1;
+  static constexpr uint64_t kBwOverusing = 2;
+
+ public:
+  static uint64_t Encode(BandwidthUsage x) {
+    switch (x) {
+      case BandwidthUsage::kBwNormal:
+        return kBwNormal;
+      case BandwidthUsage::kBwUnderusing:
+        return kBwUnderusing;
+      case BandwidthUsage::kBwOverusing:
+        return kBwOverusing;
+      case BandwidthUsage::kLast:
+        RTC_DCHECK_NOTREACHED();
+    }
+    RTC_DCHECK_NOTREACHED();
+    return std::numeric_limits<uint64_t>::max();
+  }
+  static RtcEventLogParseStatusOr<BandwidthUsage> Decode(uint64_t x) {
+    switch (x) {
+      case kBwNormal:
+        return BandwidthUsage::kBwNormal;
+      case kBwUnderusing:
+        return BandwidthUsage::kBwUnderusing;
+      case kBwOverusing:
+        return BandwidthUsage::kBwOverusing;
+    }
+    return RtcEventLogParseStatus::Error("Failed to decode BandwidthUsage enum",
+                                         __FILE__, __LINE__);
+  }
+};
+
 struct LoggedBweDelayBasedUpdate {
   LoggedBweDelayBasedUpdate() = default;
   LoggedBweDelayBasedUpdate(Timestamp timestamp,
@@ -54,11 +98,36 @@ class RtcEventBweUpdateDelayBased final : public RtcEvent {
   int32_t bitrate_bps() const { return bitrate_bps_; }
   BandwidthUsage detector_state() const { return detector_state_; }
 
+  static std::string Encode(rtc::ArrayView<const RtcEvent*> batch) {
+    return RtcEventBweUpdateDelayBased::definition_.EncodeBatch(batch);
+  }
+
+  static RtcEventLogParseStatus Parse(
+      absl::string_view s,
+      bool batched,
+      std::vector<LoggedBweDelayBasedUpdate>& output) {
+    return RtcEventBweUpdateDelayBased::definition_.ParseBatch(s, batched,
+                                                               output);
+  }
+
  private:
   RtcEventBweUpdateDelayBased(const RtcEventBweUpdateDelayBased& other);
 
   const int32_t bitrate_bps_;
   const BandwidthUsage detector_state_;
+
+  static constexpr RtcEventDefinition<RtcEventBweUpdateDelayBased,
+                                      LoggedBweDelayBasedUpdate,
+                                      int32_t,
+                                      BandwidthUsage>
+      definition_{
+          {"BweDelayBased", RtcEventBweUpdateDelayBased::kType},
+          {&RtcEventBweUpdateDelayBased::bitrate_bps_,
+           &LoggedBweDelayBasedUpdate::bitrate_bps,
+           {"bitrate_bps", /*id=*/1, FieldType::kVarInt, /*width=*/32}},
+          {&RtcEventBweUpdateDelayBased::detector_state_,
+           &LoggedBweDelayBasedUpdate::detector_state,
+           {"detector_state", /*id=*/2, FieldType::kVarInt, /*width=*/64}}};
 };
 
 }  // namespace webrtc

logging/rtc_event_log/events/rtc_event_definition.h

@@ -67,7 +67,10 @@ class RtcEventDefinitionImpl<EventType, LoggedType, T, Ts...> {
         parser.ParseNumericField(field_.params);
     if (!result.ok())
       return result.status();
-    PopulateRtcEventMember(result.value(), field_.logged_member, output_batch);
+    auto status = PopulateRtcEventMember(result.value(), field_.logged_member,
+                                         output_batch);
+    if (!status.ok())
+      return status;
 
     return rest_.ParseImpl(parser, output_batch);
   }
@@ -131,12 +134,12 @@ class RtcEventDefinition {
         parser.ParseNumericField(timestamp_params);
     if (!result.ok())
       return result.status();
-    PopulateRtcEventTimestamp(result.value(), &LoggedType::timestamp,
+    status = PopulateRtcEventTimestamp(result.value(), &LoggedType::timestamp,
                                        output_batch);
+    if (!status.ok())
+      return status;
 
     return fields_.ParseImpl(parser, output_batch);
-
-    return RtcEventLogParseStatus::Success();
   }
 
  private:

logging/rtc_event_log/events/rtc_event_end_log.cc

@@ -47,8 +47,10 @@ RtcEventLogParseStatus RtcEventEndLog::Parse(
       parser.ParseNumericField(timestamp_params);
   if (!result.ok())
     return result.status();
-  PopulateRtcEventTimestamp(result.value(), &LoggedStopEvent::timestamp,
-                            output_batch);
+  status = PopulateRtcEventTimestamp(result.value(),
+                                     &LoggedStopEvent::timestamp, output_batch);
+  if (!status.ok())
+    return status;
 
   return RtcEventLogParseStatus::Success();
 }

logging/rtc_event_log/events/rtc_event_field_encoding.h

@@ -93,5 +93,87 @@ std::string EncodeDeltasV3(FixedLengthEncodingParametersV3 params,
                            uint64_t base,
                            rtc::ArrayView<const uint64_t> values);
 
+// Given a batch of RtcEvents and a member pointer, extract that
+// member from each event in the batch. Signed integer members are
+// encoded as unsigned, and the bitsize increased so the result can
+// represented as a std::vector<uint64_t>.
+// This is intended to be used in conjuction with
+// EventEncoder::EncodeField to encode a batch of events as follows:
+// auto values = ExtractRtcEventMember(batch, RtcEventFoo::timestamp_ms);
+// encoder.EncodeField(timestamp_params, values)
+template <typename T,
+          typename E,
+          std::enable_if_t<std::is_integral<T>::value, bool> = true>
+std::vector<uint64_t> ExtractRtcEventMember(
+    rtc::ArrayView<const RtcEvent*> batch,
+    const T E::*member) {
+  std::vector<uint64_t> values;
+  values.reserve(batch.size());
+  for (const RtcEvent* event : batch) {
+    RTC_CHECK_EQ(event->GetType(), E::kType);
+    T value = static_cast<const E*>(event)->*member;
+    values.push_back(EncodeAsUnsigned(value));
+  }
+  return values;
+}
+
+// Extract an optional field from a batch of RtcEvents.
+// The function returns a vector of positions in addition to the vector of
+// values. The vector `positions` has the same length as the batch where
+// `positions[i] == true` iff the batch[i]->member has a value.
+// The values vector only contains the values that exists, so it
+// may be shorter than the batch.
+template <typename T,
+          typename E,
+          std::enable_if_t<std::is_integral<T>::value, bool> = true>
+ValuesWithPositions ExtractRtcEventMember(rtc::ArrayView<const RtcEvent*> batch,
+                                          const absl::optional<T> E::*member) {
+  ValuesWithPositions result;
+  result.position_mask.reserve(batch.size());
+  result.values.reserve(batch.size());
+  for (const RtcEvent* event : batch) {
+    RTC_CHECK_EQ(event->GetType(), E::kType);
+    absl::optional<T> field = static_cast<const E*>(event)->*member;
+    result.position_mask.push_back(field.has_value());
+    if (field.has_value()) {
+      result.values.push_back(EncodeAsUnsigned(field.value()));
+    }
+  }
+  return result;
+}
+
+// Extract an enum field from a batch of RtcEvents.
+// Requires specializing RtcEventLogEnum<T> for the enum type T.
+template <typename T,
+          typename E,
+          std::enable_if_t<std::is_enum<T>::value, bool> = true>
+std::vector<uint64_t> ExtractRtcEventMember(
+    rtc::ArrayView<const RtcEvent*> batch,
+    const T E::*member) {
+  std::vector<uint64_t> values;
+  values.reserve(batch.size());
+  for (const RtcEvent* event : batch) {
+    RTC_CHECK_EQ(event->GetType(), E::kType);
+    T value = static_cast<const E*>(event)->*member;
+    values.push_back(RtcEventLogEnum<T>::Encode(value));
+  }
+  return values;
+}
+
+// Extract a string field from a batch of RtcEvents.
+template <typename E>
+std::vector<absl::string_view> ExtractRtcEventMember(
+    rtc::ArrayView<const RtcEvent*> batch,
+    const std::string E::*member) {
+  std::vector<absl::string_view> values;
+  values.reserve(batch.size());
+  for (const RtcEvent* event : batch) {
+    RTC_CHECK_EQ(event->GetType(), E::kType);
+    absl::string_view str = static_cast<const E*>(event)->*member;
+    values.push_back(str);
+  }
+  return values;
+}
+
 }  // namespace webrtc
 #endif  // LOGGING_RTC_EVENT_LOG_EVENTS_RTC_EVENT_FIELD_ENCODING_H_

logging/rtc_event_log/events/rtc_event_field_encoding_parser.h

@@ -174,5 +174,110 @@ class EventParser {
   uint64_t last_field_id_ = FieldParameters::kTimestampField;
 };
 
+// Inverse of the ExtractRtcEventMember function used when parsing
+// a log. Uses a vector of values to populate a specific field in a
+// vector of structs.
+template <typename T,
+          typename E,
+          std::enable_if_t<std::is_integral<T>::value, bool> = true>
+ABSL_MUST_USE_RESULT RtcEventLogParseStatus
+PopulateRtcEventMember(const rtc::ArrayView<uint64_t> values,
+                       T E::*member,
+                       rtc::ArrayView<E> output) {
+  size_t batch_size = values.size();
+  RTC_CHECK_EQ(output.size(), batch_size);
+  for (size_t i = 0; i < batch_size; ++i) {
+    output[i].*member = DecodeFromUnsignedToType<T>(values[i]);
+  }
+  return RtcEventLogParseStatus::Success();
+}
+
+// Same as above, but for optional fields.
+template <typename T,
+          typename E,
+          std::enable_if_t<std::is_integral<T>::value, bool> = true>
+ABSL_MUST_USE_RESULT RtcEventLogParseStatus
+PopulateRtcEventMember(const rtc::ArrayView<uint8_t> positions,
+                       const rtc::ArrayView<uint64_t> values,
+                       absl::optional<T> E::*member,
+                       rtc::ArrayView<E> output) {
+  size_t batch_size = positions.size();
+  RTC_CHECK_EQ(output.size(), batch_size);
+  RTC_CHECK_LE(values.size(), batch_size);
+  auto value_it = values.begin();
+  for (size_t i = 0; i < batch_size; ++i) {
+    if (positions[i]) {
+      RTC_CHECK(value_it != values.end());
+      output[i].*member = DecodeFromUnsignedToType<T>(value_it);
+      ++value_it;
+    } else {
+      output[i].*member = absl::nullopt;
+    }
+  }
+  RTC_CHECK(value_it == values.end());
+  return RtcEventLogParseStatus::Success();
+}
+
+// Same as above, but for enum fields.
+template <typename T,
+          typename E,
+          std::enable_if_t<std::is_enum<T>::value, bool> = true>
+ABSL_MUST_USE_RESULT RtcEventLogParseStatus
+PopulateRtcEventMember(const rtc::ArrayView<uint64_t> values,
+                       T E::*member,
+                       rtc::ArrayView<E> output) {
+  size_t batch_size = values.size();
+  RTC_CHECK_EQ(output.size(), batch_size);
+  for (size_t i = 0; i < batch_size; ++i) {
+    auto result = RtcEventLogEnum<T>::Decode(values[i]);
+    if (!result.ok()) {
+      return result.status();
+    }
+    output[i].*member = result.value();
+  }
+  return RtcEventLogParseStatus::Success();
+}
+
+// Same as above, but for string fields.
+template <typename E>
+ABSL_MUST_USE_RESULT RtcEventLogParseStatus
+PopulateRtcEventMember(const rtc::ArrayView<absl::string_view> values,
+                       std::string E::*member,
+                       rtc::ArrayView<E> output) {
+  size_t batch_size = values.size();
+  RTC_CHECK_EQ(output.size(), batch_size);
+  for (size_t i = 0; i < batch_size; ++i) {
+    output[i].*member = values[i];
+  }
+  return RtcEventLogParseStatus::Success();
+}
+
+// Same as above, but for Timestamp fields.
+// N.B. Assumes that the encoded value uses millisecond precision.
+template <typename E>
+ABSL_MUST_USE_RESULT RtcEventLogParseStatus
+PopulateRtcEventTimestamp(const rtc::ArrayView<uint64_t>& values,
+                          Timestamp E::*timestamp,
+                          rtc::ArrayView<E> output) {
+  size_t batch_size = values.size();
+  RTC_CHECK_EQ(batch_size, output.size());
+  for (size_t i = 0; i < batch_size; ++i) {
+    output[i].*timestamp =
+        Timestamp::Millis(DecodeFromUnsignedToType<int64_t>(values[i]));
+  }
+  return RtcEventLogParseStatus::Success();
+}
+
+template <typename E>
+rtc::ArrayView<E> ExtendLoggedBatch(std::vector<E>& output,
+                                    size_t new_elements) {
+  size_t old_size = output.size();
+  output.insert(output.end(), old_size + new_elements, E());
+  rtc::ArrayView<E> output_batch = output;
+  output_batch.subview(old_size);
+  RTC_DCHECK_EQ(output_batch.size(), new_elements);
+  return output_batch;
+}
+
 }  // namespace webrtc
 #endif  // LOGGING_RTC_EVENT_LOG_EVENTS_RTC_EVENT_FIELD_ENCODING_PARSER_H_

logging/rtc_event_log/events/rtc_event_field_extraction.h

@@ -56,29 +56,16 @@ T DecodeFromUnsignedToType(uint64_t value) {
   return static_cast<T>(value);
 }
 
-// Given a batch of RtcEvents and a member pointer, extract that
-// member from each event in the batch. Signed integer members are
-// encoded as unsigned, and the bitsize increased so the result can
-// represented as a std::vector<uin64_t>.
-// This is intended to be used in conjuction with
-// EventEncoder::EncodeField to encode a batch of events as follows:
-// auto values = ExtractRtcEventMember(batch, RtcEventFoo::timestamp_ms);
-// encoder.EncodeField(timestamp_params, values)
-template <typename T,
-          typename E,
-          std::enable_if_t<std::is_integral<T>::value, bool> = true>
-std::vector<uint64_t> ExtractRtcEventMember(
-    rtc::ArrayView<const RtcEvent*> batch,
-    const T E::*member) {
-  std::vector<uint64_t> values;
-  values.reserve(batch.size());
-  for (const RtcEvent* event : batch) {
-    RTC_CHECK_EQ(event->GetType(), E::kType);
-    T value = static_cast<const E*>(event)->*member;
-    values.push_back(EncodeAsUnsigned(value));
-  }
-  return values;
-}
+// RtcEventLogEnum<T> defines a mapping between an enum T
+// and the event log encodings. To log a new enum type T,
+// specialize RtcEventLogEnum<T> and add static methods
+// static uint64_t Encode(T x) {}
+// static RtcEventLogParseStatusOr<T> Decode(uint64_t x) {}
+template <typename T>
+class RtcEventLogEnum {
+  static_assert(sizeof(T) != sizeof(T),
+                "Missing specialisation of RtcEventLogEnum for type");
+};
 
 // Represents a vector<optional<uint64_t>> optional_values
 // as a bit-vector `position_mask` which identifies the positions
@@ -92,119 +79,6 @@ struct ValuesWithPositions {
   std::vector<uint64_t> values;
 };
 
-// Same as above but for optional fields. It returns a struct
-// containing a vector of positions in addition to the vector of values.
-// The vector `positions` has the same length as the batch where
-// `positions[i] == true` iff the batch[i]->member has a value.
-// The values vector only contains the values that exists, so it
-// may be shorter than the batch.
-template <typename T,
-          typename E,
-          std::enable_if_t<std::is_integral<T>::value, bool> = true>
-ValuesWithPositions ExtractRtcEventMember(rtc::ArrayView<const RtcEvent*> batch,
-                                          const absl::optional<T> E::*member) {
-  ValuesWithPositions result;
-  result.position_mask.reserve(batch.size());
-  result.values.reserve(batch.size());
-  for (const RtcEvent* event : batch) {
-    RTC_CHECK_EQ(event->GetType(), E::kType);
-    absl::optional<T> field = static_cast<const E*>(event)->*member;
-    result.position_mask.push_back(field.has_value());
-    if (field.has_value()) {
-      result.values.push_back(EncodeAsUnsigned(field.value()));
-    }
-  }
-  return result;
-}
-
-template <typename E>
-std::vector<absl::string_view> ExtractRtcEventMember(
-    rtc::ArrayView<const RtcEvent*> batch,
-    const std::string E::*member) {
-  std::vector<absl::string_view> values;
-  values.reserve(batch.size());
-  for (const RtcEvent* event : batch) {
-    RTC_CHECK_EQ(event->GetType(), E::kType);
-    absl::string_view str = static_cast<const E*>(event)->*member;
-    values.push_back(str);
-  }
-  return values;
-}
-
-// Inverse of the ExtractRtcEventMember function used when parsing
-// a log. Uses a vector of values to populate a specific field in a
-// vector of structs.
-template <typename T,
-          typename E,
-          std::enable_if_t<std::is_integral<T>::value, bool> = true>
-void PopulateRtcEventMember(const rtc::ArrayView<uint64_t> values,
-                            T E::*member,
-                            rtc::ArrayView<E> output) {
-  size_t batch_size = values.size();
-  RTC_CHECK_EQ(output.size(), batch_size);
-  for (size_t i = 0; i < batch_size; ++i) {
-    output[i].*member = DecodeFromUnsignedToType<T>(values[i]);
-  }
-}
-
-// Same as above, but for optional fields.
-template <typename T,
-          typename E,
-          std::enable_if_t<std::is_integral<T>::value, bool> = true>
-void PopulateRtcEventMember(const rtc::ArrayView<uint8_t> positions,
-                            const rtc::ArrayView<uint64_t> values,
-                            absl::optional<T> E::*member,
-                            rtc::ArrayView<E> output) {
-  size_t batch_size = positions.size();
-  RTC_CHECK_EQ(output.size(), batch_size);
-  RTC_CHECK_LE(values.size(), batch_size);
-  auto value_it = values.begin();
-  for (size_t i = 0; i < batch_size; ++i) {
-    if (positions[i]) {
-      RTC_CHECK(value_it != values.end());
-      output[i].*member = DecodeFromUnsignedToType<T>(value_it);
-      ++value_it;
-    } else {
-      output[i].*member = absl::nullopt;
-    }
-  }
-  RTC_CHECK(value_it == values.end());
-}
-
-template <typename E>
-void PopulateRtcEventMember(const rtc::ArrayView<absl::string_view> values,
-                            std::string E::*member,
-                            rtc::ArrayView<E> output) {
-  size_t batch_size = values.size();
-  RTC_CHECK_EQ(output.size(), batch_size);
-  for (size_t i = 0; i < batch_size; ++i) {
-    output[i].*member = values[i];
-  }
-}
-
-template <typename E>
-void PopulateRtcEventTimestamp(const rtc::ArrayView<uint64_t>& values,
-                               Timestamp E::*timestamp,
-                               rtc::ArrayView<E> output) {
-  size_t batch_size = values.size();
-  RTC_CHECK_EQ(batch_size, output.size());
-  for (size_t i = 0; i < batch_size; ++i) {
-    output[i].*timestamp =
-        Timestamp::Millis(DecodeFromUnsignedToType<int64_t>(values[i]));
-  }
-}
-
-template <typename E>
-rtc::ArrayView<E> ExtendLoggedBatch(std::vector<E>& output,
-                                    size_t new_elements) {
-  size_t old_size = output.size();
-  output.insert(output.end(), old_size + new_elements, E());
-  rtc::ArrayView<E> output_batch = output;
-  output_batch.subview(old_size);
-  RTC_DCHECK_EQ(output_batch.size(), new_elements);
-  return output_batch;
-}
-
 }  // namespace webrtc
 
 #endif  // LOGGING_RTC_EVENT_LOG_EVENTS_RTC_EVENT_FIELD_EXTRACTION_H_

logging/rtc_event_log/rtc_event_log_parser.cc

@@ -1425,7 +1425,14 @@ ParsedRtcEventLog::ParseStatus ParsedRtcEventLog::ParseStreamInternalV3(
       case static_cast<uint32_t>(RtcEvent::Type::AlrStateEvent):
         RtcEventAlrState::Parse(event_fields, batched, alr_state_events_);
         break;
-        // ADD NEW EVENTS HERE
+      case static_cast<uint32_t>(RtcEvent::Type::AudioPlayout):
+        RtcEventAudioPlayout::Parse(event_fields, batched,
+                                    audio_playout_events_);
+        break;
+      case static_cast<uint32_t>(RtcEvent::Type::BweUpdateDelayBased):
+        RtcEventBweUpdateDelayBased::Parse(event_fields, batched,
+                                           bwe_delay_updates_);
+        break;
     }
   }