зеркало из https://github.com/mozilla/gecko-dev.git
99 строки
2.6 KiB
C++
99 строки
2.6 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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#include "mozilla/dom/HTMLMediaElement.h"
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#include "mozilla/dom/VideoStreamTrack.h"
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#include "mozilla/dom/VideoTrack.h"
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#include "mozilla/dom/VideoTrackBinding.h"
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#include "mozilla/dom/VideoTrackList.h"
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namespace mozilla {
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namespace dom {
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VideoTrack::VideoTrack(const nsAString& aId,
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const nsAString& aKind,
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const nsAString& aLabel,
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const nsAString& aLanguage,
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VideoStreamTrack* aStreamTarck)
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: MediaTrack(aId, aKind, aLabel, aLanguage)
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, mSelected(false)
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, mVideoStreamTrack(aStreamTarck)
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{
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}
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VideoTrack::~VideoTrack()
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{
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}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(VideoTrack, MediaTrack, mVideoStreamTrack)
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NS_IMPL_ADDREF_INHERITED(VideoTrack, MediaTrack)
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NS_IMPL_RELEASE_INHERITED(VideoTrack, MediaTrack)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(VideoTrack)
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NS_INTERFACE_MAP_END_INHERITING(MediaTrack)
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JSObject*
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VideoTrack::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return VideoTrackBinding::Wrap(aCx, this, aGivenProto);
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}
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void VideoTrack::SetSelected(bool aSelected)
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{
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SetEnabledInternal(aSelected, MediaTrack::DEFAULT);
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}
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void
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VideoTrack::SetEnabledInternal(bool aEnabled, int aFlags)
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{
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if (aEnabled == mSelected) {
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return;
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}
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mSelected = aEnabled;
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// If this VideoTrack is no longer in its original VideoTrackList, then
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// whether it is selected or not has no effect on its original list.
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if (!mList) {
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return;
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}
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VideoTrackList& list = static_cast<VideoTrackList&>(*mList);
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if (mSelected) {
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uint32_t curIndex = 0;
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// Unselect all video tracks except the current one.
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for (uint32_t i = 0; i < list.Length(); ++i) {
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if (list[i] == this) {
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curIndex = i;
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continue;
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}
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VideoTrack* track = list[i];
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track->SetSelected(false);
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}
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// Set the index of selected video track to the current's index.
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list.mSelectedIndex = curIndex;
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} else {
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list.mSelectedIndex = -1;
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}
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// Fire the change event at selection changes on this video track, shall
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// propose a spec change later.
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if (!(aFlags & MediaTrack::FIRE_NO_EVENTS)) {
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list.CreateAndDispatchChangeEvent();
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HTMLMediaElement* element = mList->GetMediaElement();
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if (element) {
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element->NotifyMediaTrackEnabled(this);
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}
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}
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}
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} // namespace dom
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} //namespace mozilla
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