PacketBuffer now can save how many times a packet has been nacked.

webrtc/modules/video_coding/packet_buffer.h

Index: webrtc/modules/video_coding/packet_buffer.h
diff --git a/webrtc/modules/video_coding/packet_buffer.h b/webrtc/modules/video_coding/packet_buffer.h
index ae0916a75f3bfb4f099f2ea730dbc6d0bd2379a2..6d054a5677b52e2499c27da98ccc9dc3480b0a33 100644
--- a/webrtc/modules/video_coding/packet_buffer.h
+++ b/webrtc/modules/video_coding/packet_buffer.h
@@ -39,7 +39,7 @@ class PacketBuffer {
                size_t max_buffer_size,
                OnCompleteFrameCallback* frame_callback);
 
-  bool InsertPacket(const VCMPacket& packet);
+  bool InsertPacket(const VCMPacket& packet, int times_nacked = -1);

[stefan-webrtc, 2016/05/20 13:10:23]

Avoid default arguments. Maybe add a nacked member to the VCMPacket class
instead?

[philipel, 2016/05/23 09:19:22]

Done.

   void ClearTo(uint16_t seq_num);
   void Clear();
 
@@ -66,6 +66,9 @@ class PacketBuffer {
 
     // If this packet has been used to create a frame already.
     bool frame_created = false;
+
+    // How many times this packet has been Nacked.
+    uint8_t times_nacked = 0;
   };
 
   // Tries to expand the buffer.