Prevent busy-looping PacedSender on small packets.

webrtc/modules/pacing/paced_sender.cc

 /*
  *  Copyright (c) 2012 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 304 matching lines @@
 
 void PacedSender::InsertPacket(RtpPacketSender::Priority priority,
                                uint32_t ssrc,
                                uint16_t sequence_number,
                                int64_t capture_time_ms,
                                size_t bytes,
                                bool retransmission) {
   CriticalSectionScoped cs(critsect_.get());
 
   if (probing_enabled_ && !prober_->IsProbing())
     prober_->SetEnabled(true);

[stefan-webrtc, 2016/02/10 10:56:19]

Wait until we have a packet large enough to probe with?

   prober_->MaybeInitializeProbe(bitrate_bps_);
+  int64_t now_ms = clock_->TimeInMilliseconds();

[stefan-webrtc, 2016/02/10 10:56:19]

Move down again

[pbos-webrtc, 2016/02/10 13:19:08]

Needed in OnIncomingPacket, so added back up.

 
-  int64_t now_ms = clock_->TimeInMilliseconds();
   if (capture_time_ms < 0)
     capture_time_ms = now_ms;
 
   packets_->Push(paced_sender::Packet(priority, ssrc, sequence_number,
                                       capture_time_ms, now_ms, bytes,
                                       retransmission, packet_counter_++));
 }
 
 int64_t PacedSender::ExpectedQueueTimeMs() const {
   CriticalSectionScoped cs(critsect_.get());
@@ skipping 133 matching lines @@
     media_budget_->UseBudget(bytes_sent);
     padding_budget_->UseBudget(bytes_sent);
   }
 }
 
 void PacedSender::UpdateBytesPerInterval(int64_t delta_time_ms) {
   media_budget_->IncreaseBudget(delta_time_ms);
   padding_budget_->IncreaseBudget(delta_time_ms);
 }
 }  // namespace webrtc