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-rw-r--r--dom/media/VideoTrack.cpp103
1 files changed, 103 insertions, 0 deletions
diff --git a/dom/media/VideoTrack.cpp b/dom/media/VideoTrack.cpp
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+++ b/dom/media/VideoTrack.cpp
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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/HTMLMediaElement.h"
+#include "mozilla/dom/VideoStreamTrack.h"
+#include "mozilla/dom/VideoTrack.h"
+#include "mozilla/dom/VideoTrackBinding.h"
+#include "mozilla/dom/VideoTrackList.h"
+
+namespace mozilla {
+namespace dom {
+
+VideoTrack::VideoTrack(const nsAString& aId,
+ const nsAString& aKind,
+ const nsAString& aLabel,
+ const nsAString& aLanguage,
+ VideoStreamTrack* aStreamTarck)
+ : MediaTrack(aId, aKind, aLabel, aLanguage)
+ , mSelected(false)
+ , mVideoStreamTrack(aStreamTarck)
+{
+}
+
+VideoTrack::~VideoTrack()
+{
+}
+
+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_INHERITED(VideoTrack)
+NS_INTERFACE_MAP_END_INHERITING(MediaTrack)
+
+JSObject*
+VideoTrack::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+ return VideoTrackBinding::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 dom
+} //namespace mozilla