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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 et tw=78: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/VideoTrack.h"
#include "mozilla/dom/HTMLMediaElement.h"
#include "mozilla/dom/VideoStreamTrack.h"
#include "mozilla/dom/VideoTrackBinding.h"
#include "mozilla/dom/VideoTrackList.h"
namespace mozilla::dom {
VideoTrack::VideoTrack(nsIGlobalObject* aOwnerGlobal, const nsAString& aId,
const nsAString& aKind, const nsAString& aLabel,
const nsAString& aLanguage,
VideoStreamTrack* aStreamTrack)
: MediaTrack(aOwnerGlobal, aId, aKind, aLabel, aLanguage),
mSelected(false),
mVideoStreamTrack(aStreamTrack) {}
VideoTrack::~VideoTrack() = default;
NS_IMPL_CYCLE_COLLECTION_INHERITED(VideoTrack, MediaTrack, mVideoStreamTrack)
NS_IMPL_ADDREF_INHERITED(VideoTrack, MediaTrack)
NS_IMPL_RELEASE_INHERITED(VideoTrack, MediaTrack)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(VideoTrack)
NS_INTERFACE_MAP_END_INHERITING(MediaTrack)
JSObject* VideoTrack::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return VideoTrack_Binding::Wrap(aCx, this, aGivenProto);
}
void VideoTrack::SetSelected(bool aSelected) {
SetEnabledInternal(aSelected, MediaTrack::DEFAULT);
}
void VideoTrack::SetEnabledInternal(bool aEnabled, int aFlags) {
if (aEnabled == mSelected) {
return;
}
mSelected = aEnabled;
// If this VideoTrack is no longer in its original VideoTrackList, then
// whether it is selected or not has no effect on its original list.
if (!mList) {
return;
}
VideoTrackList& list = static_cast<VideoTrackList&>(*mList);
if (mSelected) {
uint32_t curIndex = 0;
// Unselect all video tracks except the current one.
for (uint32_t i = 0; i < list.Length(); ++i) {
if (list[i] == this) {
curIndex = i;
continue;
}
VideoTrack* track = list[i];
track->SetSelected(false);
}
// Set the index of selected video track to the current's index.
list.mSelectedIndex = curIndex;
HTMLMediaElement* element = mList->GetMediaElement();
if (element) {
element->NotifyMediaTrackEnabled(this);
}
} else {
list.mSelectedIndex = -1;
HTMLMediaElement* element = mList->GetMediaElement();
if (element) {
element->NotifyMediaTrackDisabled(this);
}
}
// Fire the change event at selection changes on this video track, shall
// propose a spec change later.
if (!(aFlags & MediaTrack::FIRE_NO_EVENTS)) {
list.CreateAndDispatchChangeEvent();
}
}
} // namespace mozilla::dom
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