Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim:set ts=2 sw=2 et tw=78: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef mozilla_dom_VideoTrack_h
       8             : #define mozilla_dom_VideoTrack_h
       9             : 
      10             : #include "MediaTrack.h"
      11             : 
      12             : namespace mozilla {
      13             : namespace dom {
      14             : 
      15             : class VideoTrackList;
      16             : class VideoStreamTrack;
      17             : 
      18             : class VideoTrack : public MediaTrack
      19             : {
      20             : public:
      21             :   VideoTrack(const nsAString& aId,
      22             :              const nsAString& aKind,
      23             :              const nsAString& aLabel,
      24             :              const nsAString& aLanguage,
      25             :              VideoStreamTrack* aStreamTarck = nullptr);
      26             : 
      27             :   NS_DECL_ISUPPORTS_INHERITED
      28           0 :   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(VideoTrack, MediaTrack)
      29             : 
      30             :   JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
      31             : 
      32           0 :   VideoTrack* AsVideoTrack() override
      33             :   {
      34           0 :     return this;
      35             :   }
      36             : 
      37             :   // When fetching media resource, if no video track is selected by the media
      38             :   // resource, then the first VideoTrack object in the list is set selected as
      39             :   // default. If multiple video tracks are selected by its media resource at
      40             :   // fetching phase, then the first enabled video track is set selected.
      41             :   // aFlags contains FIRE_NO_EVENTS because no events are fired in such cases.
      42             :   void SetEnabledInternal(bool aEnabled, int aFlags) override;
      43             : 
      44             :   // Get associated video stream track when the video track comes from
      45             :   // MediaStream. This might be nullptr when the src of owning HTMLMediaElement
      46             :   // is not MediaStream.
      47           0 :   VideoStreamTrack* GetVideoStreamTrack() { return mVideoStreamTrack; }
      48             : 
      49             :   // WebIDL
      50           0 :   bool Selected() const
      51             :   {
      52           0 :     return mSelected;
      53             :   }
      54             : 
      55             :   // Either zero or one video track is selected in a list; If the selected track
      56             :   // is in a VideoTrackList, then all the other VideoTrack objects in that list
      57             :   // must be unselected.
      58             :   void SetSelected(bool aSelected);
      59             : 
      60             : private:
      61             :   virtual ~VideoTrack();
      62             : 
      63             :   bool mSelected;
      64             :   RefPtr<VideoStreamTrack> mVideoStreamTrack;
      65             : };
      66             : 
      67             : } // namespace dom
      68             : } // namespace mozilla
      69             : 
      70             : #endif // mozilla_dom_VideoTrack_h