Make rtc_event_log2text output header extensions

webrtc/logging/rtc_event_log/rtc_event_log_parser.h

 /*
  *  Copyright (c) 2016 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.
  */
 #ifndef WEBRTC_LOGGING_RTC_EVENT_LOG_RTC_EVENT_LOG_PARSER_H_
 #define WEBRTC_LOGGING_RTC_EVENT_LOG_RTC_EVENT_LOG_PARSER_H_
 
+#include <map>
 #include <string>
+#include <utility>  // pair
 #include <vector>
 
 #include "webrtc/base/ignore_wundef.h"
 #include "webrtc/logging/rtc_event_log/rtc_event_log.h"
+#include "webrtc/modules/rtp_rtcp/source/byte_io.h"
+#include "webrtc/modules/rtp_rtcp/source/rtp_header_extension.h"
 #include "webrtc/video_receive_stream.h"
 #include "webrtc/video_send_stream.h"
 
 // Files generated at build-time by the protobuf compiler.
 RTC_PUSH_IGNORING_WUNDEF()
 #ifdef WEBRTC_ANDROID_PLATFORM_BUILD
 #include "external/webrtc/webrtc/logging/rtc_event_log/rtc_event_log.pb.h"
 #else
 #include "webrtc/logging/rtc_event_log/rtc_event_log.pb.h"
 #endif
@@ skipping 64 matching lines @@
   int64_t GetTimestamp(size_t index) const;
 
   // Reads the event type of the rtclog::Event at |index|.
   EventType GetEventType(size_t index) const;
 
   // Reads the header, direction, header length and packet length from the RTP
   // event at |index|, and stores the values in the corresponding output
   // parameters. Each output parameter can be set to nullptr if that value
   // isn't needed.
   // NB: The header must have space for at least IP_PACKET_SIZE bytes.
-  void GetRtpHeader(size_t index,
-                    PacketDirection* incoming,
-                    uint8_t* header,
-                    size_t* header_length,
-                    size_t* total_length) const;
+  // Returns: a pointer to a header extensions map acquired from parsing
+  // corresponding Audio/Video Sender/Receiver config events.
+  // Warning: if the same SSRC is reused by both video and audio streams during
+  // call, extensions maps may be incorrect (the last one would be returned).
+  webrtc::RtpHeaderExtensionMap* GetRtpHeader(size_t index,
+                                              PacketDirection* incoming,
+                                              uint8_t* header,
+                                              size_t* header_length,
+                                              size_t* total_length) const;
 
   // Reads packet, direction and packet length from the RTCP event at |index|,
   // and stores the values in the corresponding output parameters.
   // Each output parameter can be set to nullptr if that value isn't needed.
   // NB: The packet must have space for at least IP_PACKET_SIZE bytes.
   void GetRtcpPacket(size_t index,
                      PacketDirection* incoming,
                      uint8_t* packet,
                      size_t* length) const;
 
@@ skipping 54 matching lines @@
   std::vector<rtclog::StreamConfig> GetVideoSendConfig(
       const rtclog::Event& event) const;
   rtclog::StreamConfig GetAudioReceiveConfig(const rtclog::Event& event) const;
   rtclog::StreamConfig GetAudioSendConfig(const rtclog::Event& event) const;
 
   std::vector<rtclog::Event> events_;
 
   struct Stream {
     Stream(uint32_t ssrc,
            MediaType media_type,
-           webrtc::PacketDirection direction)
-        : ssrc(ssrc), media_type(media_type), direction(direction) {}
+           webrtc::PacketDirection direction,
+           webrtc::RtpHeaderExtensionMap map)
+        : ssrc(ssrc),
+          media_type(media_type),
+          direction(direction),
+          rtp_extensions_map(map) {}
     uint32_t ssrc;
     MediaType media_type;
     webrtc::PacketDirection direction;
+    webrtc::RtpHeaderExtensionMap rtp_extensions_map;
   };
 
   // All configured streams found in the event log.
   std::vector<Stream> streams_;
+
+  // To find configured extensions map for given stream, what are needed to
+  // parse a header.
+  typedef std::pair<uint32_t, webrtc::PacketDirection> StreamId;
+  std::map<StreamId, webrtc::RtpHeaderExtensionMap*> rtp_extensions_maps_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_LOGGING_RTC_EVENT_LOG_RTC_EVENT_LOG_PARSER_H_