diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
index 48d1471..5f42ea1 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
@@ -155,6 +155,9 @@
     // constructor.
     virtual bool isValid() const = 0;
 
+    // Returns the DisplayId the output represents, if it has one
+    virtual std::optional<DisplayId> getDisplayId() const = 0;
+
     // Enables (or disables) composition on this output
     virtual void setCompositionEnabled(bool) = 0;
 
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
index 4acaab9..ace876c 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
@@ -40,6 +40,7 @@
     virtual ~Display();
 
     // compositionengine::Output overrides
+    std::optional<DisplayId> getDisplayId() const override;
     void dump(std::string&) const override;
     using compositionengine::impl::Output::setReleasedLayers;
     void setReleasedLayers(const CompositionRefreshArgs&) override;
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
index ba6f72f..a2342ae 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
@@ -34,6 +34,7 @@
 
     // compositionengine::Output overrides
     bool isValid() const override;
+    std::optional<DisplayId> getDisplayId() const override;
     void setCompositionEnabled(bool) override;
     void setProjection(const ui::Transform&, int32_t orientation, const Rect& frame,
                        const Rect& viewport, const Rect& scissor, bool needsFiltering) override;
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
index dd211f1..02e68fc 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
@@ -34,6 +34,7 @@
     virtual ~Output();
 
     MOCK_CONST_METHOD0(isValid, bool());
+    MOCK_CONST_METHOD0(getDisplayId, std::optional<DisplayId>());
 
     MOCK_METHOD1(setCompositionEnabled, void(bool));
     MOCK_METHOD6(setProjection,
diff --git a/services/surfaceflinger/CompositionEngine/src/Display.cpp b/services/surfaceflinger/CompositionEngine/src/Display.cpp
index 405ad42..e885629 100644
--- a/services/surfaceflinger/CompositionEngine/src/Display.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Display.cpp
@@ -55,6 +55,10 @@
     return mIsVirtual;
 }
 
+std::optional<DisplayId> Display::getDisplayId() const {
+    return mId;
+}
+
 void Display::disconnect() {
     if (!mId) {
         return;
diff --git a/services/surfaceflinger/CompositionEngine/src/Output.cpp b/services/surfaceflinger/CompositionEngine/src/Output.cpp
index c3e5cfd..2007ea3 100644
--- a/services/surfaceflinger/CompositionEngine/src/Output.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Output.cpp
@@ -75,6 +75,10 @@
             mRenderSurface->isValid();
 }
 
+std::optional<DisplayId> Output::getDisplayId() const {
+    return {};
+}
+
 const std::string& Output::getName() const {
     return mName;
 }