chromium/components/viz/service/frame_sinks/video_detector.h

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_VIZ_SERVICE_FRAME_SINKS_VIDEO_DETECTOR_H_
#define COMPONENTS_VIZ_SERVICE_FRAME_SINKS_VIDEO_DETECTOR_H_

#include <memory>
#include <vector>

#include "base/memory/raw_ptr.h"
#include "base/task/sequenced_task_runner.h"
#include "base/time/default_tick_clock.h"
#include "base/timer/timer.h"
#include "components/viz/common/surfaces/frame_sink_id.h"
#include "components/viz/service/surfaces/surface_observer.h"
#include "components/viz/service/viz_service_export.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote_set.h"
#include "services/viz/public/mojom/compositing/video_detector_observer.mojom.h"

namespace viz {

class SurfaceManager;
class VideoDetectorTest;

// Watches for updates to clients and tries to detect when a video is playing.
// If a client sends CompositorFrames with damages of size at least
// |kMinDamageWidth| x |kMinDamageHeight| at the rate of at least
// |kMinFramesPerSecond| for the duration of at least |kMinVideoDuration| then
// we say it is playing video.  We err on the side of false positives and can be
// fooled by things like continuous scrolling of a page.
class VIZ_SERVICE_EXPORT VideoDetector : public SurfaceObserver { … };

}  // namespace viz

#endif  // COMPONENTS_VIZ_SERVICE_FRAME_SINKS_VIDEO_DETECTOR_H_