Add stats for frequency offset when converting RTP timestamp to NTP time.

webrtc/video/video_receive_stream.cc

 /*
  *  Copyright (c) 2013 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 328 matching lines @@
   return stats_proxy_.GetStats();
 }
 
 // TODO(tommi): This method grabs a lock 6 times.
 void VideoReceiveStream::OnFrame(const VideoFrame& video_frame) {
   // TODO(tommi): OnDecodedFrame grabs a lock, incidentally the same lock
   // that OnSyncOffsetUpdated() and OnRenderedFrame() below grab.
   stats_proxy_.OnDecodedFrame();
 
   int64_t sync_offset_ms;
+  double estimated_freq_khz;
   // TODO(tommi): GetStreamSyncOffsetInMs grabs three locks.  One inside the
   // function itself, another in GetChannel() and a third in
   // GetPlayoutTimestamp.  Seems excessive.  Anyhow, I'm assuming the function
   // succeeds most of the time, which leads to grabbing a fourth lock.
-  if (rtp_stream_sync_.GetStreamSyncOffsetInMs(video_frame, &sync_offset_ms)) {
+  if (rtp_stream_sync_.GetStreamSyncOffsetInMs(video_frame, &sync_offset_ms,
+                                               &estimated_freq_khz)) {
     // TODO(tommi): OnSyncOffsetUpdated grabs a lock.
-    stats_proxy_.OnSyncOffsetUpdated(sync_offset_ms);
+    stats_proxy_.OnSyncOffsetUpdated(sync_offset_ms, estimated_freq_khz);
   }
 
   // config_.renderer must never be null if we're getting this callback.
   config_.renderer->OnFrame(video_frame);
 
   // TODO(tommi): OnRenderFrame grabs a lock too.
   stats_proxy_.OnRenderedFrame(video_frame);
 }
 
 // TODO(asapersson): Consider moving callback from video_encoder.h or
@@ skipping 53 matching lines @@
     RequestKeyFrame();
   }
 }
 
 void VideoReceiveStream::RequestKeyFrame() {
   rtp_stream_receiver_.RequestKeyFrame();
 }
 
 }  // namespace internal
 }  // namespace webrtc