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73 lines
2.6 KiB
C++
73 lines
2.6 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef DOM_MEDIA_MEDIACONTROL_CONTENTPLAYBACKCONTROLLER_H_
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#define DOM_MEDIA_MEDIACONTROL_CONTENTPLAYBACKCONTROLLER_H_
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#include "MediaControlKeySource.h"
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#include "nsPIDOMWindow.h"
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#include "mozilla/dom/BrowsingContext.h"
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namespace mozilla::dom {
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class MediaSession;
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/**
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* This interface is used to handle different playback control actions in the
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* content process. Most of the methods are designed based on the
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* MediaSessionAction values, which are defined in the media session spec [1].
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*
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* The reason we need that is to explicitly separate the implementation from all
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* different defined methods. If we want to add a new method in the future, we
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* can do that without modifying other methods.
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*
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* If the active media session has a corresponding MediaSessionActionHandler,
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* then we would invoke it, or we would do nothing. However, for certain
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* actions, such as `play`, `pause` and `stop`, we have default action handling
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* in order to control playback correctly even if the website doesn't use media
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* session at all or the media session doesn't have correspending action handler
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* [2].
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*
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* [1] https://w3c.github.io/mediasession/#enumdef-mediasessionaction
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* [2]
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* https://w3c.github.io/mediasession/#ref-for-active-media-session%E2%91%A1%E2%93%AA
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*/
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class MOZ_STACK_CLASS ContentPlaybackController {
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public:
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explicit ContentPlaybackController(BrowsingContext* aContext);
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~ContentPlaybackController() = default;
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// TODO: Convert Focus() to MOZ_CAN_RUN_SCRIPT
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MOZ_CAN_RUN_SCRIPT_BOUNDARY void Focus();
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void Play();
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void Pause();
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void SeekBackward();
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void SeekForward();
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void PreviousTrack();
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void NextTrack();
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void SkipAd();
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void Stop();
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void SeekTo(double aSeekTime, bool aFastSeek);
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private:
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void NotifyContentMediaControlKeyReceiver(MediaControlKey aKey);
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void NotifyMediaSession(MediaSessionAction aAction);
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void NotifyMediaSession(const MediaSessionActionDetails& aDetails);
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void NotifyMediaSessionWhenActionIsSupported(MediaSessionAction aAction);
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bool IsMediaSessionActionSupported(MediaSessionAction aAction) const;
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Maybe<uint64_t> GetActiveMediaSessionId() const;
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MediaSession* GetMediaSession() const;
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RefPtr<BrowsingContext> mBC;
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};
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class ContentMediaControlKeyHandler {
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public:
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static void HandleMediaControlAction(BrowsingContext* aContext,
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const MediaControlAction& aAction);
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};
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} // namespace mozilla::dom
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#endif
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