summaryrefslogtreecommitdiffstats
path: root/dom/media/VideoTrack.cpp
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--dom/media/VideoTrack.cpp92
1 files changed, 92 insertions, 0 deletions
diff --git a/dom/media/VideoTrack.cpp b/dom/media/VideoTrack.cpp
new file mode 100644
index 0000000000..57ed306857
--- /dev/null
+++ b/dom/media/VideoTrack.cpp
@@ -0,0 +1,92 @@
+/* -*- 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/HTMLMediaElement.h"
+#include "mozilla/dom/VideoStreamTrack.h"
+#include "mozilla/dom/VideoTrack.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