From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- third_party/libwebrtc/rtc_base/frequency_tracker.h | 56 ++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 third_party/libwebrtc/rtc_base/frequency_tracker.h (limited to 'third_party/libwebrtc/rtc_base/frequency_tracker.h') diff --git a/third_party/libwebrtc/rtc_base/frequency_tracker.h b/third_party/libwebrtc/rtc_base/frequency_tracker.h new file mode 100644 index 0000000000..3ee2ab0e1a --- /dev/null +++ b/third_party/libwebrtc/rtc_base/frequency_tracker.h @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2023 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 RTC_BASE_FREQUENCY_TRACKER_H_ +#define RTC_BASE_FREQUENCY_TRACKER_H_ + +#include +#include + +#include "absl/types/optional.h" +#include "api/units/frequency.h" +#include "api/units/time_delta.h" +#include "api/units/timestamp.h" +#include "rtc_base/rate_statistics.h" +#include "rtc_base/system/rtc_export.h" + +namespace webrtc { +// Class to estimate frequency (e.g. frame rate) over running window. +// Timestamps used in Update() and Rate() must never decrease for two +// consecutive calls. +// This class is thread unsafe. +class RTC_EXPORT FrequencyTracker { + public: + explicit FrequencyTracker(TimeDelta window_size); + + FrequencyTracker(const FrequencyTracker&) = default; + FrequencyTracker(FrequencyTracker&&) = default; + FrequencyTracker& operator=(const FrequencyTracker&) = delete; + FrequencyTracker& operator=(FrequencyTracker&&) = delete; + + ~FrequencyTracker() = default; + + // Reset instance to original state. + void Reset() { impl_.Reset(); } + + // Update rate with a new data point, moving averaging window as needed. + void Update(int64_t count, Timestamp now); + void Update(Timestamp now) { Update(1, now); } + + // Returns rate, moving averaging window as needed. + // Returns nullopt when rate can't be measured. + absl::optional Rate(Timestamp now) const; + + private: + RateStatistics impl_; +}; +} // namespace webrtc + +#endif // RTC_BASE_FREQUENCY_TRACKER_H_ -- cgit v1.2.3