1 files changed, 91 insertions, 0 deletions
diff --git a/dom/media/VideoStreamTrack.cpp b/dom/media/VideoStreamTrack.cpp
new file mode 100644
index 0000000000..ff02017dac
--- /dev/null
+++ b/dom/media/VideoStreamTrack.cpp
@@ -0,0 +1,91 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
+/* 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 "VideoStreamTrack.h"
+
+#include "MediaTrackGraph.h"
+#include "MediaTrackListener.h"
+#include "nsContentUtils.h"
+#include "nsGlobalWindowInner.h"
+#include "VideoOutput.h"
+
+namespace mozilla::dom {
+
+VideoStreamTrack::VideoStreamTrack(nsPIDOMWindowInner* aWindow,
+                                   mozilla::MediaTrack* aInputTrack,
+                                   MediaStreamTrackSource* aSource,
+                                   MediaStreamTrackState aReadyState,
+                                   bool aMuted,
+                                   const MediaTrackConstraints& aConstraints)
+    : MediaStreamTrack(aWindow, aInputTrack, aSource, aReadyState, aMuted,
+                       aConstraints) {}
+
+void VideoStreamTrack::Destroy() {
+  mVideoOutputs.Clear();
+  MediaStreamTrack::Destroy();
+}
+
+void VideoStreamTrack::AddVideoOutput(VideoFrameContainer* aSink) {
+  if (Ended()) {
+    return;
+  }
+  auto output = MakeRefPtr<VideoOutput>(
+      aSink, nsGlobalWindowInner::Cast(GetParentObject())
+                 ->AbstractMainThreadFor(TaskCategory::Other));
+  AddVideoOutput(output);
+}
+
+void VideoStreamTrack::AddVideoOutput(VideoOutput* aOutput) {
+  if (Ended()) {
+    return;
+  }
+  for (const auto& output : mVideoOutputs) {
+    if (output == aOutput) {
+      MOZ_ASSERT_UNREACHABLE("A VideoOutput was already added");
+      return;
+    }
+  }
+  mVideoOutputs.AppendElement(aOutput);
+  AddDirectListener(aOutput);
+  AddListener(aOutput);
+}
+
+void VideoStreamTrack::RemoveVideoOutput(VideoFrameContainer* aSink) {
+  for (const auto& output : mVideoOutputs.Clone()) {
+    if (output->mVideoFrameContainer == aSink) {
+      mVideoOutputs.RemoveElement(output);
+      RemoveDirectListener(output);
+      RemoveListener(output);
+    }
+  }
+}
+
+void VideoStreamTrack::RemoveVideoOutput(VideoOutput* aOutput) {
+  for (const auto& output : mVideoOutputs.Clone()) {
+    if (output == aOutput) {
+      mVideoOutputs.RemoveElement(aOutput);
+      RemoveDirectListener(aOutput);
+      RemoveListener(aOutput);
+    }
+  }
+}
+
+void VideoStreamTrack::GetLabel(nsAString& aLabel, CallerType aCallerType) {
+  nsIGlobalObject* global =
+      GetParentObject() ? GetParentObject()->AsGlobal() : nullptr;
+  if (nsContentUtils::ShouldResistFingerprinting(aCallerType, global,
+                                                 RFPTarget::StreamTrackLabel)) {
+    aLabel.AssignLiteral("Internal Camera");
+    return;
+  }
+  MediaStreamTrack::GetLabel(aLabel, aCallerType);
+}
+
+already_AddRefed<MediaStreamTrack> VideoStreamTrack::CloneInternal() {
+  return do_AddRef(new VideoStreamTrack(mWindow, mInputTrack, mSource,
+                                        ReadyState(), Muted(), mConstraints));
+}
+
+}  // namespace mozilla::dom