watch_time_component.h | Explore in Territory

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_PUBLIC_COMMON_MEDIA_WATCH_TIME_COMPONENT_H_
#define THIRD_PARTY_BLINK_PUBLIC_COMMON_MEDIA_WATCH_TIME_COMPONENT_H_

#include <vector>

#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/time/time.h"
#include "media/base/timestamp_constants.h"
#include "media/base/watch_time_keys.h"
#include "media/mojo/mojom/watch_time_recorder.mojom.h"

namespace blink {

// Every input used to calculate watch time functions the same way, so we use a
// common WatchTimeComponent class to avoid lots of copy/paste and enforce rigor
// in the reporter. Components are not thread-safe.
//
// E.g., each component does something like flip pending value, record timestamp
// of that value change, wait for next reporting cycle, finalize the elapsed
// time, flip the actual value, and then start recording from that previous
// finalize time. They may also clear the pending value flip if the value
// changes back to the previous value.
// TODO(https://crbug.com/1198341): Move to renderer/platform/media once its
// dependencies are moved to Blink.
template <typename T>
class WatchTimeComponent { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_PUBLIC_COMMON_MEDIA_WATCH_TIME_COMPONENT_H_
chromium/third_party/blink/public/common/media/watch_time_component.h
