Reland: Add BWE plot to event log analyzer.

webrtc/call/rtc_event_log.cc

 /*
  *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 20 matching lines @@
 // Files generated at build-time by the protobuf compiler.
 #ifdef WEBRTC_ANDROID_PLATFORM_BUILD
 #include "external/webrtc/webrtc/call/rtc_event_log.pb.h"
 #else
 #include "webrtc/call/rtc_event_log.pb.h"
 #endif
 #endif
 
 namespace webrtc {
 
-// No-op implementation is used if flag is not set, or in tests.
-class RtcEventLogNullImpl final : public RtcEventLog {
- public:
-  bool StartLogging(const std::string& file_name,
-                    int64_t max_size_bytes) override {
-    return false;
-  }
-  bool StartLogging(rtc::PlatformFile platform_file,
-                    int64_t max_size_bytes) override {
-    // The platform_file is open and needs to be closed.
-    if (!rtc::ClosePlatformFile(platform_file)) {
-      LOG(LS_ERROR) << "Can't close file.";
-    }
-    return false;
-  }
-  void StopLogging() override {}
-  void LogVideoReceiveStreamConfig(
-      const VideoReceiveStream::Config& config) override {}
-  void LogVideoSendStreamConfig(
-      const VideoSendStream::Config& config) override {}
-  void LogRtpHeader(PacketDirection direction,
-                    MediaType media_type,
-                    const uint8_t* header,
-                    size_t packet_length) override {}
-  void LogRtcpPacket(PacketDirection direction,
-                     MediaType media_type,
-                     const uint8_t* packet,
-                     size_t length) override {}
-  void LogAudioPlayout(uint32_t ssrc) override {}
-  void LogBwePacketLossEvent(int32_t bitrate,
-                             uint8_t fraction_loss,
-                             int32_t total_packets) override {}
-};
-
 #ifdef ENABLE_RTC_EVENT_LOG
 
 class RtcEventLogImpl final : public RtcEventLog {
  public:
   explicit RtcEventLogImpl(const Clock* clock);
   ~RtcEventLogImpl() override;
 
   bool StartLogging(const std::string& file_name,
                     int64_t max_size_bytes) override;
   bool StartLogging(rtc::PlatformFile platform_file,
@@ skipping 362 matching lines @@
   std::string dump_buffer;
   while ((bytes_read = dump_file->Read(tmp_buffer, sizeof(tmp_buffer))) > 0) {
     dump_buffer.append(tmp_buffer, bytes_read);
   }
   dump_file->CloseFile();
   return result->ParseFromString(dump_buffer);
 }
 
 #endif  // ENABLE_RTC_EVENT_LOG
 
+bool RtcEventLogNullImpl::StartLogging(rtc::PlatformFile platform_file,
+                                       int64_t max_size_bytes) {
+  // The platform_file is open and needs to be closed.
+  if (!rtc::ClosePlatformFile(platform_file)) {
+    LOG(LS_ERROR) << "Can't close file.";
+  }
+  return false;
+}
+
 // RtcEventLog member functions.
 std::unique_ptr<RtcEventLog> RtcEventLog::Create(const Clock* clock) {
 #ifdef ENABLE_RTC_EVENT_LOG
   return std::unique_ptr<RtcEventLog>(new RtcEventLogImpl(clock));
 #else
   return std::unique_ptr<RtcEventLog>(new RtcEventLogNullImpl());
 #endif  // ENABLE_RTC_EVENT_LOG
 }
 
 std::unique_ptr<RtcEventLog> RtcEventLog::CreateNull() {
   return std::unique_ptr<RtcEventLog>(new RtcEventLogNullImpl());
 }
 
 }  // namespace webrtc