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// 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_MEDIA_SESSION_CONTROLLERS_MANAGER_H_
#define CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_CONTROLLERS_MANAGER_H_
#include <map>
#include <memory>
#include <utility>
#include "base/memory/raw_ptr.h"
#include "content/common/content_export.h"
#include "content/public/browser/web_contents_observer.h" // For MediaPlayerId.
#include "services/media_session/public/mojom/media_session.mojom.h"
namespace media {
enum class MediaContentType;
} // namespace media
namespace media_session {
struct MediaPosition;
} // namespace media_session
namespace content {
class MediaSessionController;
class RenderFrameHost;
class WebContentsImpl;
// MediaSessionControllersManager is a delegate of MediaWebContentsObserver that
// handles MediaSessionController instances.
class CONTENT_EXPORT MediaSessionControllersManager {
public:
explicit MediaSessionControllersManager(WebContentsImpl* web_contents);
MediaSessionControllersManager(const MediaSessionControllersManager&) =
delete;
MediaSessionControllersManager& operator=(
const MediaSessionControllersManager&) = delete;
~MediaSessionControllersManager();
// Clear all the MediaSessionController associated with the given
// |render_frame_host|.
void RenderFrameDeleted(RenderFrameHost* render_frame_host);
// Called whenever a player's metadata changes.
void OnMetadata(const MediaPlayerId& id,
bool has_audio,
bool has_video,
media::MediaContentType media_content_type);
// Called before a player starts playing. It will be added to the media
// session and will have a controller associated with it.
// Returns whether the player was added to the session and can start playing.
bool RequestPlay(const MediaPlayerId& id);
// Called when the given player |id| has paused.
void OnPause(const MediaPlayerId& id, bool reached_end_of_stream);
// Called when the given player |id| has been destroyed.
void OnEnd(const MediaPlayerId& id);
// Called when the media position state for the player |id| has changed.
void OnMediaPositionStateChanged(
const MediaPlayerId& id,
const media_session::MediaPosition& position);
// Called when entering/leaving Picture-in-Picture for the associated
// WebContents.
void PictureInPictureStateChanged(bool is_picture_in_picture);
// Called when the WebContents was muted or unmuted.
void WebContentsMutedStateChanged(bool muted);
// Called when the player's mute status changed.
void OnMediaMutedStatusChanged(const MediaPlayerId& id, bool mute);
// Called when picture-in-picture availability for the player |id| has
// changed.
void OnPictureInPictureAvailabilityChanged(const MediaPlayerId& id,
bool available);
// Called when the audio output device for the player |id| has changed.
void OnAudioOutputSinkChanged(const MediaPlayerId& id,
const std::string& raw_device_id);
// Called when the ability to switch audio output devices for the player |id|
// has been disabled.
void OnAudioOutputSinkChangingDisabled(const MediaPlayerId& id);
// Called when the RemotePlayback metadata has changed.
void OnRemotePlaybackMetadataChange(
const MediaPlayerId& id,
media_session::mojom::RemotePlaybackMetadataPtr remote_playback_metadata);
// Called when video visibility for the player |id| has changed.
void OnVideoVisibilityChanged(const MediaPlayerId& id,
bool meets_visibility_threshold);
private:
using ControllersMap =
std::map<MediaPlayerId, std::unique_ptr<MediaSessionController>>;
// Returns the controller for the player identified by |id|, creating a new
// one and placing it in |controllers_map_| if necessary.
MediaSessionController* FindOrCreateController(const MediaPlayerId& id);
const raw_ptr<WebContentsImpl> web_contents_;
ControllersMap controllers_map_;
};
} // namespace content
#endif // CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_CONTROLLERS_MANAGER_H_
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