Win Video Capture: Sending the timestamps provided by the driver to the capture pipeline

media/capture/video/win/sink_input_pin_win.cc

Index: media/capture/video/win/sink_input_pin_win.cc
diff --git a/media/capture/video/win/sink_input_pin_win.cc b/media/capture/video/win/sink_input_pin_win.cc
index 9c515a3422e722790a7cfc051d8ff9150e91bdaf..341c032eca4cb0317263e42174c3e7659779616b 100644
--- a/media/capture/video/win/sink_input_pin_win.cc
+++ b/media/capture/video/win/sink_input_pin_win.cc
@@ -182,7 +182,17 @@ HRESULT SinkInputPin::Receive(IMediaSample* sample) {
   if (FAILED(sample->GetPointer(&buffer)))
     return S_FALSE;
 
-  observer_->FrameReceived(buffer, length);
+  REFERENCE_TIME start_time, end_time;
+  base::TimeTicks timestamp;
+  if (SUCCEEDED(sample->GetTime(&start_time, &end_time))) {
+    DCHECK(start_time <= end_time);
+    timestamp += base::TimeDelta::FromMicroseconds(start_time / 10);
+  } else {
+    timestamp = base::TimeTicks::Now();
+  }
+
+
+  observer_->FrameReceived(buffer, length, timestamp);
   return S_OK;
 }