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content / browser / media / session / pepper_playback_observer.h [blame]
// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_MEDIA_SESSION_PEPPER_PLAYBACK_OBSERVER_H_
#define CONTENT_BROWSER_MEDIA_SESSION_PEPPER_PLAYBACK_OBSERVER_H_
#include <stdint.h>
#include <map>
#include <memory>
#include <utility>
#include "base/memory/raw_ptr.h"
namespace content {
class PepperPlayerDelegate;
class RenderFrameHost;
class WebContents;
// Class observing Pepper playback changes from WebContents, and update
// MediaSession accordingly. Can only be a member of WebContents and must be
// destroyed in ~WebContents().
class PepperPlaybackObserver {
public:
explicit PepperPlaybackObserver(WebContents* contents);
PepperPlaybackObserver(const PepperPlaybackObserver&) = delete;
PepperPlaybackObserver& operator=(const PepperPlaybackObserver&) = delete;
virtual ~PepperPlaybackObserver();
void RenderFrameDeleted(RenderFrameHost* render_frame_host);
void PepperInstanceCreated(RenderFrameHost* render_frame_host,
int32_t pp_instance);
void PepperInstanceDeleted(RenderFrameHost* render_frame_host,
int32_t pp_instance);
// This method is called when a Pepper instance starts making sound.
void PepperStartsPlayback(RenderFrameHost* render_frame_host,
int32_t pp_instance);
// This method is called when a Pepper instance stops making sound.
void PepperStopsPlayback(RenderFrameHost* render_frame_host,
int32_t pp_instance);
private:
using PlayerId = std::pair<RenderFrameHost*, int32_t>;
// Owning PepperPlayerDelegates.
using PlayersMap = std::map<PlayerId, std::unique_ptr<PepperPlayerDelegate>>;
PlayersMap players_map_;
// Map for whether Pepper players have ever played sound.
// Used for recording UMA.
//
// The mapped player ids must be a super-set of player ids in |players_map_|,
// and the map is also used for cleaning up when RenderFrame is deleted or
// WebContents is destructed.
using PlayersPlayedSoundMap = std::map<PlayerId, bool>;
PlayersPlayedSoundMap players_played_sound_map_;
// Weak reference to WebContents.
raw_ptr<WebContents> contents_;
};
} // namespace content
#endif // CONTENT_BROWSER_MEDIA_SESSION_PEPPER_PLAYBACK_OBSERVER_H_