Log a message when a key frame packet is received

R=stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1518004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4089 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/video_coding/main/source/jitter_buffer.cc b/webrtc/modules/video_coding/main/source/jitter_buffer.cc
index a27dfc9..6d4bdae 100644
--- a/webrtc/modules/video_coding/main/source/jitter_buffer.cc
+++ b/webrtc/modules/video_coding/main/source/jitter_buffer.cc
@@ -601,6 +601,7 @@
     return kNoError;
   }
   // No free frame! Try to reclaim some...
+  LOG_F(LS_INFO) << "Unable to get empty frame; Recycling.";
   RecycleFramesUntilKeyFrame();
 
   *frame = GetEmptyFrame();
@@ -847,6 +848,7 @@
     if (!first_frame_is_key) {
       const bool have_non_empty_frame = frame_list_.end() != find_if(
             frame_list_.begin(), frame_list_.end(), HasNonEmptyState);
+      LOG_F(LS_INFO) << "First frame is not key; Recycling.";
       bool found_key_frame = RecycleFramesUntilKeyFrame();
       if (!found_key_frame) {
         *request_key_frame = have_non_empty_frame;
diff --git a/webrtc/modules/video_coding/main/source/receiver.cc b/webrtc/modules/video_coding/main/source/receiver.cc
index 89383ea..0e5593b 100644
--- a/webrtc/modules/video_coding/main/source/receiver.cc
+++ b/webrtc/modules/video_coding/main/source/receiver.cc
@@ -77,6 +77,11 @@
 int32_t VCMReceiver::InsertPacket(const VCMPacket& packet,
                                   uint16_t frame_width,
                                   uint16_t frame_height) {
+  WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCoding,
+               VCMId(vcm_id_, receiver_id_),
+               "Inserting key frame packet seqnum=%u, timestamp=%u",
+               packet.seqNum, packet.timestamp);
+
   // Insert the packet into the jitter buffer. The packet can either be empty or
   // contain media at this point.
   bool retransmitted = false;