Rework the audio/video sync algorithm.

[nageru] / decklink_capture.cpp

diff --git a/decklink_capture.cpp b/decklink_capture.cpp
index d38cc73a3ae432f62d9c368f766a74861f17622b..a0e890fcbcdd4fdc7c8bbb55e8212e8039980192 100644 (file)
--- a/decklink_capture.cpp
+++ b/decklink_capture.cpp
@@ -311,6 +311,8 @@ HRESULT STDMETHODCALLTYPE DeckLinkCapture::VideoInputFrameArrived(
                done_init = true;
        }
 
+       steady_clock::time_point now = steady_clock::now();
+
        FrameAllocator::Frame current_video_frame, current_audio_frame;
        VideoFormat video_format;
        AudioFormat audio_format;
@@ -357,7 +359,7 @@ HRESULT STDMETHODCALLTYPE DeckLinkCapture::VideoInputFrameArrived(
                        video_format.width = width;
                        video_format.height = height;
 
-                       current_video_frame.received_timestamp = steady_clock::now();
+                       current_video_frame.received_timestamp = now;
                }
        }
 
@@ -375,7 +377,7 @@ HRESULT STDMETHODCALLTYPE DeckLinkCapture::VideoInputFrameArrived(
                        audio_format.bits_per_sample = 32;
                        audio_format.num_channels = 2;
 
-                       current_audio_frame.received_timestamp = steady_clock::now();
+                       current_audio_frame.received_timestamp = now;
                }
        }