tor-browser

commit bfd77462f060276f354c3b9afb87ea42d1fc46fc
parent 67dc5fb2c382cb1e13b247dcfced07ada2ab1ea9
Author: Andreas Pehrson <apehrson@mozilla.com>
Date:   Tue, 11 Nov 2025 08:20:21 +0000

Bug 1771789 - Implement MediaStreamTrack::CloneInternal in a single place with templates. r=jib

Differential Revision: https://phabricator.services.mozilla.com/D266380

Diffstat:
M
dom/media/AudioStreamTrack.cpp
 | 
5
++---
M
dom/media/AudioStreamTrack.h
 | 
5
++---
M
dom/media/MediaStreamTrack.cpp
 | 
7
-------
M
dom/media/MediaStreamTrack.h
 | 
12
++++++++++--
M
dom/media/VideoStreamTrack.cpp
 | 
5
++---
M
dom/media/VideoStreamTrack.h
 | 
5
++---

6 files changed, 18 insertions(+), 21 deletions(-)
diff --git a/dom/media/AudioStreamTrack.cpp b/dom/media/AudioStreamTrack.cpp
@@ -40,9 +40,8 @@ void AudioStreamTrack::GetLabel(nsAString& aLabel, CallerType aCallerType) {
   MediaStreamTrack::GetLabel(aLabel, aCallerType);
 }
 
-already_AddRefed<MediaStreamTrack> AudioStreamTrack::CloneInternal() {
-  return do_AddRef(new AudioStreamTrack(mWindow, mInputTrack, mSource,
-                                        ReadyState(), Muted(), mConstraints));
+already_AddRefed<MediaStreamTrack> AudioStreamTrack::Clone() {
+  return MediaStreamTrack::CloneInternal<AudioStreamTrack>();
 }
 
 }  // namespace mozilla::dom
diff --git a/dom/media/AudioStreamTrack.h b/dom/media/AudioStreamTrack.h
@@ -24,6 +24,8 @@ class AudioStreamTrack : public MediaStreamTrack {
       : MediaStreamTrack(aWindow, aInputTrack, aSource, aReadyState, aMuted,
                          aConstraints) {}
 
+  already_AddRefed<MediaStreamTrack> Clone() override;
+
   AudioStreamTrack* AsAudioStreamTrack() override { return this; }
   const AudioStreamTrack* AsAudioStreamTrack() const override { return this; }
 
@@ -38,9 +40,6 @@ class AudioStreamTrack : public MediaStreamTrack {
   void GetKind(nsAString& aKind) override { aKind.AssignLiteral("audio"); }
 
   void GetLabel(nsAString& aLabel, CallerType aCallerType) override;
-
- protected:
-  already_AddRefed<MediaStreamTrack> CloneInternal() override;
 };
 
 }  // namespace mozilla::dom
diff --git a/dom/media/MediaStreamTrack.cpp b/dom/media/MediaStreamTrack.cpp
@@ -539,13 +539,6 @@ void MediaStreamTrack::RemoveConsumer(MediaStreamTrackConsumer* aConsumer) {
   }
 }
 
-already_AddRefed<MediaStreamTrack> MediaStreamTrack::Clone() {
-  RefPtr<MediaStreamTrack> newTrack = CloneInternal();
-  newTrack->SetEnabled(Enabled());
-  newTrack->SetMuted(Muted());
-  return newTrack.forget();
-}
-
 void MediaStreamTrack::SetReadyState(MediaStreamTrackState aState) {
   MOZ_ASSERT(!(mReadyState == MediaStreamTrackState::Ended &&
                aState == MediaStreamTrackState::Live),
diff --git a/dom/media/MediaStreamTrack.h b/dom/media/MediaStreamTrack.h
@@ -469,7 +469,7 @@ class MediaStreamTrack : public DOMEventTargetHelper, public SupportsWeakPtr {
   already_AddRefed<Promise> ApplyConstraints(
       const dom::MediaTrackConstraints& aConstraints, CallerType aCallerType,
       ErrorResult& aRv);
-  already_AddRefed<MediaStreamTrack> Clone();
+  virtual already_AddRefed<MediaStreamTrack> Clone() = 0;
   MediaStreamTrackState ReadyState() { return mReadyState; }
 
   IMPL_EVENT_HANDLER(mute)
@@ -642,7 +642,15 @@ class MediaStreamTrack : public DOMEventTargetHelper, public SupportsWeakPtr {
    * Creates a new MediaStreamTrack with the same kind, input track, input
    * track ID and source as this MediaStreamTrack.
    */
-  virtual already_AddRefed<MediaStreamTrack> CloneInternal() = 0;
+
+  template <typename TrackType>
+  already_AddRefed<MediaStreamTrack> CloneInternal() {
+    auto newTrack = MakeRefPtr<TrackType>(mWindow, mInputTrack, mSource,
+                                          ReadyState(), Muted(), mConstraints);
+    newTrack->SetEnabled(Enabled());
+    newTrack->SetMuted(Muted());
+    return newTrack.forget();
+  }
 
   nsTArray<PrincipalChangeObserver<MediaStreamTrack>*>
       mPrincipalChangeObservers;
diff --git a/dom/media/VideoStreamTrack.cpp b/dom/media/VideoStreamTrack.cpp
@@ -74,9 +74,8 @@ void VideoStreamTrack::GetLabel(nsAString& aLabel, CallerType aCallerType) {
   MediaStreamTrack::GetLabel(aLabel, aCallerType);
 }
 
-already_AddRefed<MediaStreamTrack> VideoStreamTrack::CloneInternal() {
-  return do_AddRef(new VideoStreamTrack(mWindow, mInputTrack, mSource,
-                                        ReadyState(), Muted(), mConstraints));
+already_AddRefed<MediaStreamTrack> VideoStreamTrack::Clone() {
+  return MediaStreamTrack::CloneInternal<VideoStreamTrack>();
 }
 
 }  // namespace mozilla::dom
diff --git a/dom/media/VideoStreamTrack.h b/dom/media/VideoStreamTrack.h
@@ -25,6 +25,8 @@ class VideoStreamTrack : public MediaStreamTrack {
       bool aMuted = false,
       const MediaTrackConstraints& aConstraints = MediaTrackConstraints());
 
+  already_AddRefed<MediaStreamTrack> Clone() override;
+
   void Destroy() override;
 
   VideoStreamTrack* AsVideoStreamTrack() override { return this; }
@@ -45,9 +47,6 @@ class VideoStreamTrack : public MediaStreamTrack {
 
   void GetLabel(nsAString& aLabel, CallerType aCallerType) override;
 
- protected:
-  already_AddRefed<MediaStreamTrack> CloneInternal() override;
-
  private:
   nsTArray<RefPtr<VideoOutput>> mVideoOutputs;
 };