Add probe logging to RtcEventLog.

webrtc/logging/rtc_event_log/rtc_event_log.proto

 syntax = "proto2";
 option optimize_for = LITE_RUNTIME;
 package webrtc.rtclog;
 
 enum MediaType {
   ANY = 0;
   AUDIO = 1;
   VIDEO = 2;
   DATA = 3;
 }
@@ skipping 20 matching lines @@
     RTP_EVENT = 3;
     RTCP_EVENT = 4;
     AUDIO_PLAYOUT_EVENT = 5;
     BWE_PACKET_LOSS_EVENT = 6;
     BWE_PACKET_DELAY_EVENT = 7;
     VIDEO_RECEIVER_CONFIG_EVENT = 8;
     VIDEO_SENDER_CONFIG_EVENT = 9;
     AUDIO_RECEIVER_CONFIG_EVENT = 10;
     AUDIO_SENDER_CONFIG_EVENT = 11;
     AUDIO_NETWORK_ADAPTATION_EVENT = 16;
+    BWE_PROBE_CLUSTER_CREATED_EVENT = 17;
+    BWE_PROBE_RESULT_EVENT = 18;
   }
 
   // required - Indicates the type of this event
   optional EventType type = 2;
 
   // optional - but required if type == RTP_EVENT
   optional RtpPacket rtp_packet = 3;
 
   // optional - but required if type == RTCP_EVENT
   optional RtcpPacket rtcp_packet = 4;
@@ skipping 11 matching lines @@
   optional VideoSendConfig video_sender_config = 9;
 
   // optional - but required if type == AUDIO_RECEIVER_CONFIG_EVENT
   optional AudioReceiveConfig audio_receiver_config = 10;
 
   // optional - but required if type == AUDIO_SENDER_CONFIG_EVENT
   optional AudioSendConfig audio_sender_config = 11;
 
   // optional - but required if type == AUDIO_NETWORK_ADAPTATION_EVENT
   optional AudioNetworkAdaptation audio_network_adaptation = 16;
+
+  // optional - but required if type == BWE_PROBE_CLUSTER_CREATED_EVENT
+  optional BweProbeCluster probe_cluster = 17;
+
+  // optional - but required if type == BWE_PROBE_RESULT_EVENT
+  optional BweProbeResult probe_result = 18;
 }
 
 message RtpPacket {
   // required - True if the packet is incoming w.r.t. the user logging the data
   optional bool incoming = 1;
 
   // required
   optional MediaType type = 2;
 
   // required - The size of the packet including both payload and header.
   optional uint32 packet_length = 3;
 
   // required - The RTP header only.
   optional bytes header = 4;
 
+  // optional - The probe cluster id.
+  optional uint32 probe_cluster_id = 5;
+
   // Do not add code to log user payload data without a privacy review!
 }
 
 message RtcpPacket {
   // required - True if the packet is incoming w.r.t. the user logging the data
   optional bool incoming = 1;
 
   // required
   optional MediaType type = 2;
 
@@ skipping 147 matching lines @@
   optional float uplink_packet_loss_fraction = 3;
 
   // Whether forward error correction (FEC) is turned on or off.
   optional bool enable_fec = 4;
 
   // Whether discontinuous transmission (DTX) is turned on or off.
   optional bool enable_dtx = 5;
 
   // Number of audio channels that each encoded packet consists of.
   optional uint32 num_channels = 6;
+}
+
+message BweProbeCluster {
+  // required - The id of this probe cluster.
+  optional uint32 id = 1;
+
+  // required - The bitrate in bps that this probe cluster is meant to probe.
+  optional uint64 bitrate_bps = 2;
+
+  // required - The minimum number of packets used to probe the given bitrate.
+  optional uint32 min_packets = 3;
+
+  // required - The minimum number of bytes used to probe the given bitrate.
+  optional uint32 min_bytes = 4;
+}
+
+message BweProbeResult {
+  // required - The id of this probe cluster.
+  optional uint32 id = 1;
+
+  enum ResultType {
+    SUCCESS = 0;
+    INVALID_SEND_RECEIVE_INTERVAL = 1;
+    INVALID_SEND_RECEIVE_RATIO = 2;
+    TIMEOUT = 3;
+  }
+
+  // required - The result of this probing attempt.
+  optional ResultType result = 2;
+
+  // optional - but required if result == SUCCESS. The resulting bitrate in bps.
+  optional uint64 bitrate_bps = 3;
 }