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

media/capture/video/win/video_capture_device_win.cc

Index: media/capture/video/win/video_capture_device_win.cc
diff --git a/media/capture/video/win/video_capture_device_win.cc b/media/capture/video/win/video_capture_device_win.cc
index c9961fa222eb84d90c768ea9e40da3574cf63074..d3ef73abe3a55dc14606f3fd2a019033a897ef1c 100644
--- a/media/capture/video/win/video_capture_device_win.cc
+++ b/media/capture/video/win/video_capture_device_win.cc
@@ -447,9 +447,17 @@ void VideoCaptureDeviceWin::StopAndDeAllocate() {
 }
 
 // Implements SinkFilterObserver::SinkFilterObserver.
-void VideoCaptureDeviceWin::FrameReceived(const uint8* buffer, int length) {
-  client_->OnIncomingCapturedData(buffer, length, capture_format_, 0,
-                                  base::TimeTicks::Now());
+void VideoCaptureDeviceWin::FrameReceived(
+    const uint8* buffer,
+    int length,
+    REFERENCE_TIME raw_timestamp) {
+  client_->OnIncomingCapturedData(
+      buffer,
+      length,
+      capture_format_,
+      0,
+      base::TimeTicks() +

[mcasas, 2015/09/09 23:33:27]

Funny you need to add a dummy ctor to add a TimeDelta. Hmm.

[qiangchen, 2015/09/10 18:03:01]

TimeTicks has only static function FromInternalValue which can return a non-zero
instance. 

In my previous CL, Dale Curtis thought it was unsafe to use that function, in
case that in the future the unit for internal value would change. 

+        base::TimeDelta::FromMicroseconds(raw_timestamp / 10));
 }
 
 bool VideoCaptureDeviceWin::CreateCapabilityMap() {