Add m-esr52 at 52.6.0

1 files changed, 167 insertions, 0 deletions

diff --git a/dom/media/MediaTrackList.cpp b/dom/media/MediaTrackList.cpp
new file mode 100644
index 000000000..f2c98694d
--- /dev/null
+++ b/dom/media/MediaTrackList.cpp
@@ -0,0 +1,167 @@
+/* -*- 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 "MediaTrack.h"
+#include "MediaTrackList.h"
+#include "mozilla/AsyncEventDispatcher.h"
+#include "mozilla/dom/HTMLMediaElement.h"
+#include "mozilla/dom/AudioTrack.h"
+#include "mozilla/dom/VideoStreamTrack.h"
+#include "mozilla/dom/VideoTrack.h"
+#include "mozilla/dom/TrackEvent.h"
+#include "nsThreadUtils.h"
+
+namespace mozilla {
+namespace dom {
+
+MediaTrackList::MediaTrackList(nsPIDOMWindowInner* aOwnerWindow,
+                               HTMLMediaElement* aMediaElement)
+  : DOMEventTargetHelper(aOwnerWindow)
+  , mMediaElement(aMediaElement)
+{
+}
+
+MediaTrackList::~MediaTrackList()
+{
+}
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(MediaTrackList,
+                                   DOMEventTargetHelper,
+                                   mTracks,
+                                   mMediaElement)
+
+NS_IMPL_ADDREF_INHERITED(MediaTrackList, DOMEventTargetHelper)
+NS_IMPL_RELEASE_INHERITED(MediaTrackList, DOMEventTargetHelper)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(MediaTrackList)
+NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
+
+MediaTrack*
+MediaTrackList::operator[](uint32_t aIndex)
+{
+  return mTracks.ElementAt(aIndex);
+}
+
+MediaTrack*
+MediaTrackList::IndexedGetter(uint32_t aIndex, bool& aFound)
+{
+  aFound = aIndex < mTracks.Length();
+  if (!aFound) {
+    return nullptr;
+  }
+  return mTracks[aIndex];
+}
+
+MediaTrack*
+MediaTrackList::GetTrackById(const nsAString& aId)
+{
+  for (uint32_t i = 0; i < mTracks.Length(); ++i) {
+    if (aId.Equals(mTracks[i]->GetId())) {
+      return mTracks[i];
+    }
+  }
+  return nullptr;
+}
+
+void
+MediaTrackList::AddTrack(MediaTrack* aTrack)
+{
+  mTracks.AppendElement(aTrack);
+  aTrack->Init(GetOwner());
+  aTrack->SetTrackList(this);
+  CreateAndDispatchTrackEventRunner(aTrack, NS_LITERAL_STRING("addtrack"));
+
+  if ((!aTrack->AsAudioTrack() || !aTrack->AsAudioTrack()->Enabled()) &&
+      (!aTrack->AsVideoTrack() || !aTrack->AsVideoTrack()->Selected())) {
+    // Track not enabled, no need to notify media element.
+    return;
+  }
+
+  if (HTMLMediaElement* element = GetMediaElement()) {
+    element->NotifyMediaTrackEnabled(aTrack);
+  }
+}
+
+void
+MediaTrackList::RemoveTrack(const RefPtr<MediaTrack>& aTrack)
+{
+  mTracks.RemoveElement(aTrack);
+  aTrack->SetEnabledInternal(false, MediaTrack::FIRE_NO_EVENTS);
+  aTrack->SetTrackList(nullptr);
+  CreateAndDispatchTrackEventRunner(aTrack, NS_LITERAL_STRING("removetrack"));
+}
+
+void
+MediaTrackList::RemoveTracks()
+{
+  while (!mTracks.IsEmpty()) {
+    RefPtr<MediaTrack> track = mTracks.LastElement();
+    RemoveTrack(track);
+  }
+}
+
+already_AddRefed<AudioTrack>
+MediaTrackList::CreateAudioTrack(const nsAString& aId,
+                                 const nsAString& aKind,
+                                 const nsAString& aLabel,
+                                 const nsAString& aLanguage,
+                                 bool aEnabled)
+{
+  RefPtr<AudioTrack> track = new AudioTrack(aId, aKind, aLabel, aLanguage,
+                                              aEnabled);
+  return track.forget();
+}
+
+already_AddRefed<VideoTrack>
+MediaTrackList::CreateVideoTrack(const nsAString& aId,
+                                 const nsAString& aKind,
+                                 const nsAString& aLabel,
+                                 const nsAString& aLanguage,
+                                 VideoStreamTrack* aVideoTrack)
+{
+  RefPtr<VideoTrack> track = new VideoTrack(aId, aKind, aLabel, aLanguage, aVideoTrack);
+  return track.forget();
+}
+
+void
+MediaTrackList::EmptyTracks()
+{
+  for (uint32_t i = 0; i < mTracks.Length(); ++i) {
+    mTracks[i]->SetEnabledInternal(false, MediaTrack::FIRE_NO_EVENTS);
+    mTracks[i]->SetTrackList(nullptr);
+  }
+  mTracks.Clear();
+}
+
+void
+MediaTrackList::CreateAndDispatchChangeEvent()
+{
+  RefPtr<AsyncEventDispatcher> asyncDispatcher =
+    new AsyncEventDispatcher(this, NS_LITERAL_STRING("change"), false);
+  asyncDispatcher->PostDOMEvent();
+}
+
+void
+MediaTrackList::CreateAndDispatchTrackEventRunner(MediaTrack* aTrack,
+                                                  const nsAString& aEventName)
+{
+  TrackEventInit eventInit;
+
+  if (aTrack->AsAudioTrack()) {
+    eventInit.mTrack.SetValue().SetAsAudioTrack() = aTrack->AsAudioTrack();
+  } else if (aTrack->AsVideoTrack()) {
+    eventInit.mTrack.SetValue().SetAsVideoTrack() = aTrack->AsVideoTrack();
+  }
+
+  RefPtr<TrackEvent> event =
+    TrackEvent::Constructor(this, aEventName, eventInit);
+
+  RefPtr<AsyncEventDispatcher> asyncDispatcher =
+    new AsyncEventDispatcher(this, event);
+  asyncDispatcher->PostDOMEvent();
+}
+
+} // namespace dom
+} // namespace mozilla