chromium/components/viz/service/display_embedder/vsync_parameter_listener.h

// Copyright 2019 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_DISPLAY_EMBEDDER_VSYNC_PARAMETER_LISTENER_H_
#define COMPONENTS_VIZ_SERVICE_DISPLAY_EMBEDDER_VSYNC_PARAMETER_LISTENER_H_

#include "base/time/time.h"
#include "components/viz/service/viz_service_export.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/viz/privileged/mojom/compositing/vsync_parameter_observer.mojom.h"

namespace viz {

// Sends updated vsync parameters over IPC when either the interval changes or
// the timebase offset skews more than kMaxTimebaseSkew. Timebase skew for last
// timebase sent to the observer T1 and a new timebase T2 is defined as
// difference between T1 + N * interval and T2 + M * interval for N and M that
// produce the smallest difference.
class VIZ_SERVICE_EXPORT VSyncParameterListener { … };

}  // namespace viz

#endif  // COMPONENTS_VIZ_SERVICE_DISPLAY_EMBEDDER_VSYNC_PARAMETER_LISTENER_H_