blob: 52bca48bd48e74268c14adc95a9e0b7f0dacea3e [file] [log] [blame]
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/memory/ref_counted.h"
#include "base/time/time.h"
namespace remoting {
namespace protocol {
// Used on the host side to track timestamps for input events.
struct InputEventTimestamps {
// Client-side timestamps. This value comes from the client clock, so it
// should not be used for any calculations on the host side (except in tests).
base::TimeTicks client_timestamp;
// Time when the event was processed by the host.
base::TimeTicks host_timestamp;
bool is_null() { return client_timestamp.is_null(); }
// InputEventTimestampsSource is used by VideoStream implementations to get
// event timestamps that are sent back to the client as part of VideoStats
// message.
class InputEventTimestampsSource
: public base::RefCountedThreadSafe<InputEventTimestampsSource> {
InputEventTimestampsSource() {}
// Returns event timestamps for the input event that was received since the
// previous call. Null InputEventTimestamps value is returned if no input
// events were received. If multiple input events were received, then
// timestamps for the last one should be returned
virtual InputEventTimestamps TakeLastEventTimestamps() = 0;
friend base::RefCountedThreadSafe<InputEventTimestampsSource>;
virtual ~InputEventTimestampsSource() {}
// Simple implementations of InputEventTimestampsSource that just stores the
// value provided to OnEventReceived().
class InputEventTimestampsSourceImpl : public InputEventTimestampsSource {
void OnEventReceived(InputEventTimestamps timestamps);
// InputEventTimestampsSource implementation.
InputEventTimestamps TakeLastEventTimestamps() override;
~InputEventTimestampsSourceImpl() override;
InputEventTimestamps last_timestamps_;
} // namespace protocol
} // namespace remoting