1 files changed, 70 insertions, 0 deletions
diff --git a/dom/media/AudioTrack.cpp b/dom/media/AudioTrack.cpp
new file mode 100644
index 0000000000..e6ee43a0f8
--- /dev/null
+++ b/dom/media/AudioTrack.cpp
@@ -0,0 +1,70 @@
+/* -*- 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/AudioStreamTrack.h"
+#include "mozilla/dom/AudioTrack.h"
+#include "mozilla/dom/AudioTrackBinding.h"
+#include "mozilla/dom/AudioTrackList.h"
+#include "mozilla/dom/HTMLMediaElement.h"
+
+namespace mozilla::dom {
+
+AudioTrack::AudioTrack(nsIGlobalObject* aOwnerGlobal, const nsAString& aId,
+                       const nsAString& aKind, const nsAString& aLabel,
+                       const nsAString& aLanguage, bool aEnabled,
+                       AudioStreamTrack* aStreamTrack)
+    : MediaTrack(aOwnerGlobal, aId, aKind, aLabel, aLanguage),
+      mEnabled(aEnabled),
+      mAudioStreamTrack(aStreamTrack) {}
+
+AudioTrack::~AudioTrack() = default;
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(AudioTrack, MediaTrack, mAudioStreamTrack)
+
+NS_IMPL_ADDREF_INHERITED(AudioTrack, MediaTrack)
+NS_IMPL_RELEASE_INHERITED(AudioTrack, MediaTrack)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AudioTrack)
+NS_INTERFACE_MAP_END_INHERITING(MediaTrack)
+
+JSObject* AudioTrack::WrapObject(JSContext* aCx,
+                                 JS::Handle<JSObject*> aGivenProto) {
+  return AudioTrack_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+void AudioTrack::SetEnabled(bool aEnabled) {
+  SetEnabledInternal(aEnabled, MediaTrack::DEFAULT);
+}
+
+void AudioTrack::SetEnabledInternal(bool aEnabled, int aFlags) {
+  if (aEnabled == mEnabled) {
+    return;
+  }
+  mEnabled = aEnabled;
+
+  // If this AudioTrack is no longer in its original AudioTrackList, then
+  // whether it is enabled or not has no effect on its original list.
+  if (!mList) {
+    return;
+  }
+
+  if (mEnabled) {
+    HTMLMediaElement* element = mList->GetMediaElement();
+    if (element) {
+      element->NotifyMediaTrackEnabled(this);
+    }
+  } else {
+    HTMLMediaElement* element = mList->GetMediaElement();
+    if (element) {
+      element->NotifyMediaTrackDisabled(this);
+    }
+  }
+
+  if (!(aFlags & MediaTrack::FIRE_NO_EVENTS)) {
+    mList->CreateAndDispatchChangeEvent();
+  }
+}
+
+}  // namespace mozilla::dom