summaryrefslogtreecommitdiffstats
path: root/third_party/libwebrtc/test/drifting_clock.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--third_party/libwebrtc/test/drifting_clock.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/third_party/libwebrtc/test/drifting_clock.h b/third_party/libwebrtc/test/drifting_clock.h
new file mode 100644
index 0000000000..4a2500ba30
--- /dev/null
+++ b/third_party/libwebrtc/test/drifting_clock.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+#ifndef TEST_DRIFTING_CLOCK_H_
+#define TEST_DRIFTING_CLOCK_H_
+
+#include <stdint.h>
+
+#include "system_wrappers/include/clock.h"
+#include "system_wrappers/include/ntp_time.h"
+
+namespace webrtc {
+namespace test {
+class DriftingClock : public Clock {
+ public:
+ static constexpr float kNoDrift = 1.0f;
+
+ DriftingClock(Clock* clock, float speed);
+
+ static constexpr float PercentsFaster(float percent) {
+ return 1.0f + percent / 100.0f;
+ }
+ static constexpr float PercentsSlower(float percent) {
+ return 1.0f - percent / 100.0f;
+ }
+
+ Timestamp CurrentTime() override { return Drift(clock_->CurrentTime()); }
+ NtpTime ConvertTimestampToNtpTime(Timestamp timestamp) override {
+ return Drift(clock_->ConvertTimestampToNtpTime(timestamp));
+ }
+
+ private:
+ TimeDelta Drift() const;
+ Timestamp Drift(Timestamp timestamp) const;
+ NtpTime Drift(NtpTime ntp_time) const;
+
+ Clock* const clock_;
+ const float drift_;
+ const Timestamp start_time_;
+};
+} // namespace test
+} // namespace webrtc
+
+#endif // TEST_DRIFTING_CLOCK_H_