diff --git a/services/surfaceflinger/Android.bp b/services/surfaceflinger/Android.bp
index 34b8281..eeb3f3a 100644
--- a/services/surfaceflinger/Android.bp
+++ b/services/surfaceflinger/Android.bp
@@ -158,6 +158,7 @@
         "FrameTracer/FrameTracer.cpp",
         "FrameTracker.cpp",
         "HdrLayerInfoReporter.cpp",
+        "WindowInfosListenerInvoker.cpp",
         "Layer.cpp",
         "LayerProtoHelper.cpp",
         "LayerRejecter.cpp",
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 7f5569b..39f7e32 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -133,6 +133,7 @@
 #include "SurfaceInterceptor.h"
 #include "TimeStats/TimeStats.h"
 #include "TunnelModeEnabledReporter.h"
+#include "WindowInfosListenerInvoker.h"
 #include "android-base/parseint.h"
 #include "android-base/stringprintf.h"
 #include "android-base/strings.h"
@@ -167,6 +168,7 @@
 
 using android::hardware::power::Boost;
 using base::StringAppendF;
+using gui::IWindowInfosListener;
 using gui::WindowInfo;
 using ui::ColorMode;
 using ui::Dataspace;
@@ -355,7 +357,8 @@
         mTunnelModeEnabledReporter(new TunnelModeEnabledReporter()),
         mInternalDisplayDensity(getDensityFromProperty("ro.sf.lcd_density", true)),
         mEmulatedDisplayDensity(getDensityFromProperty("qemu.sf.lcd_density", false)),
-        mPowerAdvisor(*this) {
+        mPowerAdvisor(*this),
+        mWindowInfosListenerInvoker(new WindowInfosListenerInvoker()) {
     ALOGI("Using HWComposer service: %s", mHwcServiceName.c_str());
 
     mSetInputWindowsListener = new SetInputWindowsListener([&]() { setInputWindowsFinished(); });
@@ -5336,6 +5339,14 @@
             }
             return PERMISSION_DENIED;
         }
+        case ADD_WINDOW_INFOS_LISTENER:
+        case REMOVE_WINDOW_INFOS_LISTENER: {
+            const int uid = IPCThreadState::self()->getCallingUid();
+            if (uid == AID_SYSTEM || uid == AID_GRAPHICS) {
+                return OK;
+            }
+            return PERMISSION_DENIED;
+        }
     }
 
     // These codes are used for the IBinder protocol to either interrogate the recipient
@@ -6990,6 +7001,18 @@
     onActiveDisplaySizeChanged(activeDisplay);
 }
 
+status_t SurfaceFlinger::addWindowInfosListener(
+        const sp<IWindowInfosListener>& windowInfosListener) const {
+    mWindowInfosListenerInvoker->addWindowInfosListener(windowInfosListener);
+    return NO_ERROR;
+}
+
+status_t SurfaceFlinger::removeWindowInfosListener(
+        const sp<IWindowInfosListener>& windowInfosListener) const {
+    mWindowInfosListenerInvoker->removeWindowInfosListener(windowInfosListener);
+    return NO_ERROR;
+}
+
 } // namespace android
 
 #if defined(__gl_h_)
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index a88de87..5a1b445 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -102,6 +102,7 @@
 class RenderArea;
 class TimeStats;
 class FrameTracer;
+class WindowInfosListenerInvoker;
 
 using gui::ScreenCaptureResults;
 
@@ -717,6 +718,11 @@
 
     status_t getMaxAcquiredBufferCount(int* buffers) const override;
 
+    status_t addWindowInfosListener(
+            const sp<gui::IWindowInfosListener>& windowInfosListener) const override;
+    status_t removeWindowInfosListener(
+            const sp<gui::IWindowInfosListener>& windowInfosListener) const override;
+
     // Implements IBinder::DeathRecipient.
     void binderDied(const wp<IBinder>& who) override;
 
@@ -1499,6 +1505,8 @@
     }
 
     wp<IBinder> mActiveDisplayToken GUARDED_BY(mStateLock);
+
+    const sp<WindowInfosListenerInvoker> mWindowInfosListenerInvoker;
 };
 
 } // namespace android
diff --git a/services/surfaceflinger/WindowInfosListenerInvoker.cpp b/services/surfaceflinger/WindowInfosListenerInvoker.cpp
new file mode 100644
index 0000000..55136fb
--- /dev/null
+++ b/services/surfaceflinger/WindowInfosListenerInvoker.cpp
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "WindowInfosListenerInvoker.h"
+#include <gui/ISurfaceComposer.h>
+#include <unordered_set>
+
+namespace android {
+
+using gui::IWindowInfosListener;
+using gui::WindowInfo;
+
+void WindowInfosListenerInvoker::addWindowInfosListener(
+        const sp<IWindowInfosListener>& windowInfosListener) {
+    sp<IBinder> asBinder = IInterface::asBinder(windowInfosListener);
+
+    asBinder->linkToDeath(this);
+    std::scoped_lock lock(mListenersMutex);
+    mWindowInfosListeners.emplace(asBinder, windowInfosListener);
+}
+
+void WindowInfosListenerInvoker::removeWindowInfosListener(
+        const sp<IWindowInfosListener>& windowInfosListener) {
+    sp<IBinder> asBinder = IInterface::asBinder(windowInfosListener);
+
+    std::scoped_lock lock(mListenersMutex);
+    asBinder->unlinkToDeath(this);
+    mWindowInfosListeners.erase(asBinder);
+}
+
+void WindowInfosListenerInvoker::binderDied(const wp<IBinder>& who) {
+    std::scoped_lock lock(mListenersMutex);
+    mWindowInfosListeners.erase(who);
+}
+
+void WindowInfosListenerInvoker::windowInfosChanged(const std::vector<WindowInfo>& windowInfos) {
+    std::unordered_set<sp<IWindowInfosListener>, ISurfaceComposer::SpHash<IWindowInfosListener>>
+            windowInfosListeners;
+
+    {
+        std::scoped_lock lock(mListenersMutex);
+        for (const auto& [_, listener] : mWindowInfosListeners) {
+            windowInfosListeners.insert(listener);
+        }
+    }
+
+    for (const auto& listener : windowInfosListeners) {
+        listener->onWindowInfosChanged(windowInfos);
+    }
+}
+
+} // namespace android
\ No newline at end of file
diff --git a/services/surfaceflinger/WindowInfosListenerInvoker.h b/services/surfaceflinger/WindowInfosListenerInvoker.h
new file mode 100644
index 0000000..b979de1
--- /dev/null
+++ b/services/surfaceflinger/WindowInfosListenerInvoker.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/gui/IWindowInfosListener.h>
+#include <binder/IBinder.h>
+#include <utils/Mutex.h>
+#include <unordered_map>
+
+namespace android {
+
+class WindowInfosListenerInvoker : public IBinder::DeathRecipient {
+public:
+    void addWindowInfosListener(const sp<gui::IWindowInfosListener>& windowInfosListener);
+    void removeWindowInfosListener(const sp<gui::IWindowInfosListener>& windowInfosListener);
+
+    void windowInfosChanged(const std::vector<gui::WindowInfo>& windowInfos);
+
+protected:
+    void binderDied(const wp<IBinder>& who) override;
+
+private:
+    struct WpHash {
+        size_t operator()(const wp<IBinder>& p) const {
+            return std::hash<IBinder*>()(p.unsafe_get());
+        }
+    };
+
+    std::mutex mListenersMutex;
+    std::unordered_map<wp<IBinder>, const sp<gui::IWindowInfosListener>, WpHash>
+            mWindowInfosListeners GUARDED_BY(mListenersMutex);
+};
+} // namespace android
\ No newline at end of file