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4b3fa9c67e
This is inherently large, because modifying these bits of DOMMediaStream and MediaStreamTrack affects all consumers and producers of all DOMMediaStreams and MediaStreamTracks. Things are generally much simpler now. Producers of tracks now create a MediaStream in the graph, add it to a MediaStreamTrackSource subclass that takes ownership of it, and add the source to a MediaStreamTrack. Should the producer need a DOMMediaStream it is now much simpler to create as the only thing needed is the current window. The stream is a rather simple wrapper around an array of MediaStreamTracks. HTMLMediaElement is still not as straight forward as other consumers since it consumes the DOMMediaStream directly, as opposed to a set of tracks. The new MediaStreamRenderer helper class helps bridge the gap between this fact and the new track-based MediaStreamGraph interface, as it needs to juggle registering multiple audio tracks for audio output. This hooks into existing HTMLMediaElement logic and brings a welcome simplification to all the glue previously needed there. Differential Revision: https://phabricator.services.mozilla.com/D37934 --HG-- extra : moz-landing-system : lando
64 lines
2.1 KiB
C++
64 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 et tw=78: */
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/* 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_VideoTrack_h
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#define mozilla_dom_VideoTrack_h
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#include "MediaTrack.h"
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namespace mozilla {
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namespace dom {
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class VideoTrackList;
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class VideoStreamTrack;
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class VideoTrack : public MediaTrack {
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public:
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VideoTrack(nsIGlobalObject* aOwnerGlobal, const nsAString& aId,
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const nsAString& aKind, const nsAString& aLabel,
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const nsAString& aLanguage,
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VideoStreamTrack* aStreamTrack = nullptr);
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(VideoTrack, MediaTrack)
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JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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VideoTrack* AsVideoTrack() override { return this; }
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// When fetching media resource, if no video track is selected by the media
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// resource, then the first VideoTrack object in the list is set selected as
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// default. If multiple video tracks are selected by its media resource at
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// fetching phase, then the first enabled video track is set selected.
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// aFlags contains FIRE_NO_EVENTS because no events are fired in such cases.
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void SetEnabledInternal(bool aEnabled, int aFlags) override;
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// Get associated video stream track when the video track comes from
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// MediaStream. This might be nullptr when the src of owning HTMLMediaElement
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// is not MediaStream.
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VideoStreamTrack* GetVideoStreamTrack() { return mVideoStreamTrack; }
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// WebIDL
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bool Selected() const { return mSelected; }
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// Either zero or one video track is selected in a list; If the selected track
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// is in a VideoTrackList, then all the other VideoTrack objects in that list
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// must be unselected.
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void SetSelected(bool aSelected);
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private:
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virtual ~VideoTrack();
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bool mSelected;
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RefPtr<VideoStreamTrack> mVideoStreamTrack;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_VideoTrack_h
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