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// Copyright 2017 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.
#ifndef MEDIA_REMOTING_METRICS_H_
#define MEDIA_REMOTING_METRICS_H_
#include "base/macros.h"
#include "base/optional.h"
#include "base/time/time.h"
#include "media/base/pipeline_metadata.h"
#include "media/remoting/triggers.h"
#include "ui/gfx/geometry/size.h"
namespace media {
namespace remoting {
class SessionMetricsRecorder {
public:
SessionMetricsRecorder();
~SessionMetricsRecorder();
// When attempting to start a remoting session, WillStartSession() is called,
// followed by either OnSessionStartSucceeded() or OnSessionStop() to indicate
// whether the start succeeded. Later, OnSessionStop() is called when the
// session ends.
void WillStartSession(StartTrigger trigger);
void DidStartSession();
void WillStopSession(StopTrigger trigger);
// These may be called before, during, or after a remoting session.
void OnPipelineMetadataChanged(const PipelineMetadata& metadata);
void OnRemotePlaybackDisabled(bool disabled);
void OnPosterImageDownloaded(const base::TimeDelta download_duration,
bool success);
private:
// Whether audio only, video only, or both were played during the session.
//
// NOTE: Never re-number or re-use numbers here. These are used in UMA
// histograms, and must remain backwards-compatible for all time. However,
// *do* change TRACK_CONFIGURATION_MAX to one after the greatest value when
// adding new ones. Also, don't forget to update histograms.xml!
enum TrackConfiguration {
NEITHER_AUDIO_NOR_VIDEO = 0,
AUDIO_ONLY = 1,
VIDEO_ONLY = 2,
AUDIO_AND_VIDEO = 3,
TRACK_CONFIGURATION_MAX = 3,
};
// Helper methods to record media configuration at relevant times.
void RecordAudioConfiguration();
void RecordVideoConfiguration();
void RecordTrackConfiguration();
// |start_trigger_| is set while a remoting session is active.
base::Optional<StartTrigger> start_trigger_;
// When the current (or last) remoting session started.
base::TimeTicks start_time_;
// Last known audio and video configuration. These can change before/after a
// remoting session as well as during one.
AudioCodec last_audio_codec_;
ChannelLayout last_channel_layout_;
int last_sample_rate_;
VideoCodec last_video_codec_;
VideoCodecProfile last_video_profile_;
gfx::Size last_natural_size_;
// Last known disabled playback state. This can change before/after a remoting
// session as well as during one.
bool remote_playback_is_disabled_;
DISALLOW_COPY_AND_ASSIGN(SessionMetricsRecorder);
};
class RendererMetricsRecorder {
public:
RendererMetricsRecorder();
~RendererMetricsRecorder();
// Called when an "initialize success" message is received from the remote.
void OnRendererInitialized();
// Called whenever there is direct (or indirect, but close-in-time) evidence
// that playout has occurred.
void OnEvidenceOfPlayoutAtReceiver();
// These are called at regular intervals throughout the session to provide
// estimated data flow rates.
void OnAudioRateEstimate(int kilobits_per_second);
void OnVideoRateEstimate(int kilobits_per_second);
private:
const base::TimeTicks start_time_;
bool did_record_first_playout_;
DISALLOW_COPY_AND_ASSIGN(RendererMetricsRecorder);
};
} // namespace remoting
} // namespace media
#endif // MEDIA_REMOTING_METRICS_H_
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