1 files changed, 44 insertions, 0 deletions
diff --git a/dom/media/webrtc/libwebrtcglue/SystemTime.h b/dom/media/webrtc/libwebrtcglue/SystemTime.h
new file mode 100644
index 0000000000..5c042e689f
--- /dev/null
+++ b/dom/media/webrtc/libwebrtcglue/SystemTime.h
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef DOM_MEDIA_WEBRTC_LIBWEBRTCGLUE_SYSTEMTIMENANOS_H_
+#define DOM_MEDIA_WEBRTC_LIBWEBRTCGLUE_SYSTEMTIMENANOS_H_
+
+#include "jsapi/RTCStatsReport.h"
+#include "mozilla/TimeStamp.h"
+#include "system_wrappers/include/clock.h"
+
+namespace mozilla {
+class RTCStatsTimestampMakerRealtimeClock : public webrtc::Clock {
+ public:
+  explicit RTCStatsTimestampMakerRealtimeClock(
+      const dom::RTCStatsTimestampMaker& aTimestampMaker);
+
+  webrtc::Timestamp CurrentTime() override;
+
+  // Upstream, this method depend on rtc::TimeUTCMicros for converting the
+  // monotonic system clock to Ntp, if only for the first call when deciding the
+  // Ntp offset.
+  // We override this to be able to use our own clock instead of
+  // rtc::TimeUTCMicros for ntp timestamps.
+  webrtc::NtpTime ConvertTimestampToNtpTime(
+      webrtc::Timestamp aRealtime) override;
+
+  const dom::RTCStatsTimestampMaker mTimestampMaker;
+};
+
+// The time base used for WebrtcSystemTime(). Completely arbitrary. Constant.
+TimeStamp WebrtcSystemTimeBase();
+
+// The returned timestamp denotes the monotonic time passed since
+// WebrtcSystemTimeBase(). Libwebrtc uses this to track how time advances from a
+// specific point in time. It adds an offset to make the timestamps absolute.
+webrtc::Timestamp WebrtcSystemTime();
+
+webrtc::NtpTime CreateNtp(webrtc::Timestamp aTime);
+}  // namespace mozilla
+
+#endif