Add an audio/video synchronization utility
On Chameleon, audio capturing and video capturing work separately.
To know the time difference between audio/video capturing, we can
monitor the changes of the audio page count and the video frame count.
BUG=None
TEST=manual test.
Use test_server to test StartMonitoringAudioVideoCapturingDelay() and
GetAudioVideoCapturingDelay(), note that the edid should be equipped
with audio.
>>> for i in xrange(10):
... p.StartMonitoringAudioVideoCapturingDelay()
... p.StartCapturingVideo(3)
... p.StartCapturingAudio(3)
... time.sleep(2)
... p.StopCapturingVideo()
... p.StopCapturingAudio(3)
... print p.GetAudioVideoCapturingDelay()
...
Change-Id: I9b213964afed51a2e9c7b9c56ddc8b6002ef73bd
Reviewed-on: https://chromium-review.googlesource.com/371158
Commit-Ready: Chen-hao Chang <haocc@google.com>
Tested-by: Chen-hao Chang <haocc@google.com>
Reviewed-by: Wai-Hong Tam <waihong@google.com>
5 files changed
