1 files changed, 16 insertions, 0 deletions
diff --git a/api/video/video_frame.h b/api/video/video_frame.h
index a257a3209e..2608f9aa42 100644
--- a/api/video/video_frame.h
+++ b/api/video/video_frame.h
@@ -109,6 +109,8 @@ class RTC_EXPORT VideoFrame {
     Builder& set_timestamp_us(int64_t timestamp_us);
     Builder& set_capture_time_identifier(
         const absl::optional<Timestamp>& capture_time_identifier);
+    Builder& set_reference_time(
+        const absl::optional<Timestamp>& reference_time);
     Builder& set_timestamp_rtp(uint32_t timestamp_rtp);
     Builder& set_ntp_time_ms(int64_t ntp_time_ms);
     Builder& set_rotation(VideoRotation rotation);
@@ -123,6 +125,7 @@ class RTC_EXPORT VideoFrame {
     rtc::scoped_refptr<webrtc::VideoFrameBuffer> video_frame_buffer_;
     int64_t timestamp_us_ = 0;
     absl::optional<Timestamp> capture_time_identifier_;
+    absl::optional<Timestamp> reference_time_;
     uint32_t timestamp_rtp_ = 0;
     int64_t ntp_time_ms_ = 0;
     VideoRotation rotation_ = kVideoRotation_0;
@@ -177,6 +180,13 @@ class RTC_EXPORT VideoFrame {
     capture_time_identifier_ = capture_time_identifier;
   }
 
+  const absl::optional<Timestamp>& reference_time() const {
+    return reference_time_;
+  }
+  void set_reference_time(const absl::optional<Timestamp>& reference_time) {
+    reference_time_ = reference_time;
+  }
+
   // Set frame timestamp (90kHz).
   void set_timestamp(uint32_t timestamp) { timestamp_rtp_ = timestamp; }
 
@@ -274,6 +284,7 @@ class RTC_EXPORT VideoFrame {
              const rtc::scoped_refptr<VideoFrameBuffer>& buffer,
              int64_t timestamp_us,
              const absl::optional<Timestamp>& capture_time_identifier,
+             const absl::optional<Timestamp>& reference_time,
              uint32_t timestamp_rtp,
              int64_t ntp_time_ms,
              VideoRotation rotation,
@@ -289,6 +300,11 @@ class RTC_EXPORT VideoFrame {
   int64_t ntp_time_ms_;
   int64_t timestamp_us_;
   absl::optional<Timestamp> capture_time_identifier_;
+  // Contains a monotonically increasing clock time and represents the time
+  // when the frame was captured. Not all platforms provide the "true" sample
+  // capture time in |reference_time| but might instead use a somewhat delayed
+  // (by the time it took to capture the frame) version of it.
+  absl::optional<Timestamp> reference_time_;
   VideoRotation rotation_;
   absl::optional<ColorSpace> color_space_;
   // Contains parameters that affect have the frame should be rendered.