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-rw-r--r--libs/gui/Android.bp2
-rw-r--r--libs/gui/BufferQueueCore.cpp1
-rw-r--r--libs/gui/ISurfaceComposer.cpp31
-rw-r--r--libs/gui/SurfaceComposerClient.cpp24
-rw-r--r--libs/gui/WindowInfosListenerReporter.cpp92
-rw-r--r--libs/gui/android/gui/IWindowInfosListener.aidl25
-rw-r--r--libs/gui/include/gui/ISurfaceComposer.h8
-rw-r--r--libs/gui/include/gui/SurfaceComposerClient.h4
-rw-r--r--libs/gui/include/gui/WindowInfosListener.h28
-rw-r--r--libs/gui/include/gui/WindowInfosListenerReporter.h47
-rw-r--r--libs/gui/tests/Surface_test.cpp10
-rw-r--r--services/surfaceflinger/Android.bp1
-rw-r--r--services/surfaceflinger/SurfaceFlinger.cpp25
-rw-r--r--services/surfaceflinger/SurfaceFlinger.h8
-rw-r--r--services/surfaceflinger/WindowInfosListenerInvoker.cpp65
-rw-r--r--services/surfaceflinger/WindowInfosListenerInvoker.h47
16 files changed, 409 insertions, 9 deletions
diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index 2d8fff91da..4f57d576a4 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -67,6 +67,7 @@ cc_library_static {
":guiconstants_aidl",
"android/gui/FocusRequest.aidl",
"android/gui/InputApplicationInfo.aidl",
+ "android/gui/IWindowInfosListener.aidl",
"android/gui/WindowInfo.aidl",
"WindowInfo.cpp",
],
@@ -189,6 +190,7 @@ cc_library_shared {
"SyncFeatures.cpp",
"TransactionTracing.cpp",
"view/Surface.cpp",
+ "WindowInfosListenerReporter.cpp",
"bufferqueue/1.0/B2HProducerListener.cpp",
"bufferqueue/1.0/H2BGraphicBufferProducer.cpp",
"bufferqueue/2.0/B2HProducerListener.cpp",
diff --git a/libs/gui/BufferQueueCore.cpp b/libs/gui/BufferQueueCore.cpp
index 5023b6bb81..2930154ad4 100644
--- a/libs/gui/BufferQueueCore.cpp
+++ b/libs/gui/BufferQueueCore.cpp
@@ -34,7 +34,6 @@
#include <gui/BufferQueueCore.h>
#include <gui/IConsumerListener.h>
#include <gui/IProducerListener.h>
-#include <gui/ISurfaceComposer.h>
#include <private/gui/ComposerService.h>
#include <system/window.h>
diff --git a/libs/gui/ISurfaceComposer.cpp b/libs/gui/ISurfaceComposer.cpp
index 0d7795e1ba..2a980bd118 100644
--- a/libs/gui/ISurfaceComposer.cpp
+++ b/libs/gui/ISurfaceComposer.cpp
@@ -44,6 +44,7 @@
namespace android {
+using gui::IWindowInfosListener;
using ui::ColorMode;
class BpSurfaceComposer : public BpInterface<ISurfaceComposer>
@@ -1227,6 +1228,22 @@ public:
return reply.readInt32(buffers);
}
+
+ status_t addWindowInfosListener(
+ const sp<IWindowInfosListener>& windowInfosListener) const override {
+ Parcel data, reply;
+ SAFE_PARCEL(data.writeInterfaceToken, ISurfaceComposer::getInterfaceDescriptor());
+ SAFE_PARCEL(data.writeStrongBinder, IInterface::asBinder(windowInfosListener));
+ return remote()->transact(BnSurfaceComposer::ADD_WINDOW_INFOS_LISTENER, data, &reply);
+ }
+
+ status_t removeWindowInfosListener(
+ const sp<IWindowInfosListener>& windowInfosListener) const override {
+ Parcel data, reply;
+ SAFE_PARCEL(data.writeInterfaceToken, ISurfaceComposer::getInterfaceDescriptor());
+ SAFE_PARCEL(data.writeStrongBinder, IInterface::asBinder(windowInfosListener));
+ return remote()->transact(BnSurfaceComposer::REMOVE_WINDOW_INFOS_LISTENER, data, &reply);
+ }
};
// Out-of-line virtual method definition to trigger vtable emission in this
@@ -2107,6 +2124,20 @@ status_t BnSurfaceComposer::onTransact(
SAFE_PARCEL(reply->writeBool, success);
return err;
}
+ case ADD_WINDOW_INFOS_LISTENER: {
+ CHECK_INTERFACE(ISurfaceComposer, data, reply);
+ sp<IWindowInfosListener> listener;
+ SAFE_PARCEL(data.readStrongBinder, &listener);
+
+ return addWindowInfosListener(listener);
+ }
+ case REMOVE_WINDOW_INFOS_LISTENER: {
+ CHECK_INTERFACE(ISurfaceComposer, data, reply);
+ sp<IWindowInfosListener> listener;
+ SAFE_PARCEL(data.readStrongBinder, &listener);
+
+ return removeWindowInfosListener(listener);
+ }
default: {
return BBinder::onTransact(code, data, reply, flags);
}
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index c52c644eb7..8547739420 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -19,6 +19,7 @@
#include <stdint.h>
#include <sys/types.h>
+#include <android/gui/IWindowInfosListener.h>
#include <utils/Errors.h>
#include <utils/Log.h>
#include <utils/SortedVector.h>
@@ -54,6 +55,7 @@ namespace android {
using gui::FocusRequest;
using gui::WindowInfo;
using gui::WindowInfoHandle;
+using gui::WindowInfosListener;
using ui::ColorMode;
// ---------------------------------------------------------------------------
@@ -95,6 +97,7 @@ bool ComposerService::connectLocked() {
if (instance.mComposerService == nullptr) {
if (ComposerService::getInstance().connectLocked()) {
ALOGD("ComposerService reconnected");
+ WindowInfosListenerReporter::getInstance()->reconnect(instance.mComposerService);
}
}
return instance.mComposerService;
@@ -1768,15 +1771,10 @@ void SurfaceComposerClient::Transaction::setDisplaySize(const sp<IBinder>& token
// ---------------------------------------------------------------------------
-SurfaceComposerClient::SurfaceComposerClient()
- : mStatus(NO_INIT)
-{
-}
+SurfaceComposerClient::SurfaceComposerClient() : mStatus(NO_INIT) {}
SurfaceComposerClient::SurfaceComposerClient(const sp<ISurfaceComposerClient>& client)
- : mStatus(NO_ERROR), mClient(client)
-{
-}
+ : mStatus(NO_ERROR), mClient(client) {}
void SurfaceComposerClient::onFirstRef() {
sp<ISurfaceComposer> sf(ComposerService::getComposerService());
@@ -2142,6 +2140,18 @@ int SurfaceComposerClient::getGPUContextPriority() {
return ComposerService::getComposerService()->getGPUContextPriority();
}
+status_t SurfaceComposerClient::addWindowInfosListener(
+ const sp<WindowInfosListener>& windowInfosListener) {
+ return WindowInfosListenerReporter::getInstance()
+ ->addWindowInfosListener(windowInfosListener, ComposerService::getComposerService());
+}
+
+status_t SurfaceComposerClient::removeWindowInfosListener(
+ const sp<WindowInfosListener>& windowInfosListener) {
+ return WindowInfosListenerReporter::getInstance()
+ ->removeWindowInfosListener(windowInfosListener, ComposerService::getComposerService());
+}
+
// ----------------------------------------------------------------------------
status_t ScreenshotClient::captureDisplay(const DisplayCaptureArgs& captureArgs,
diff --git a/libs/gui/WindowInfosListenerReporter.cpp b/libs/gui/WindowInfosListenerReporter.cpp
new file mode 100644
index 0000000000..834e2b8433
--- /dev/null
+++ b/libs/gui/WindowInfosListenerReporter.cpp
@@ -0,0 +1,92 @@
+/*
+ * 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 <gui/ISurfaceComposer.h>
+#include <gui/WindowInfosListenerReporter.h>
+
+namespace android {
+
+using gui::WindowInfo;
+using gui::WindowInfosListener;
+
+sp<WindowInfosListenerReporter> WindowInfosListenerReporter::getInstance() {
+ static sp<WindowInfosListenerReporter> sInstance = new WindowInfosListenerReporter;
+ return sInstance;
+}
+
+status_t WindowInfosListenerReporter::addWindowInfosListener(
+ const sp<WindowInfosListener>& windowInfosListener,
+ const sp<ISurfaceComposer>& surfaceComposer) {
+ status_t status = OK;
+ {
+ std::scoped_lock lock(mListenersMutex);
+ if (mWindowInfosListeners.empty()) {
+ status = surfaceComposer->addWindowInfosListener(this);
+ }
+
+ if (status == OK) {
+ mWindowInfosListeners.insert(windowInfosListener);
+ }
+ }
+
+ return status;
+}
+
+status_t WindowInfosListenerReporter::removeWindowInfosListener(
+ const sp<WindowInfosListener>& windowInfosListener,
+ const sp<ISurfaceComposer>& surfaceComposer) {
+ status_t status = OK;
+ {
+ std::scoped_lock lock(mListenersMutex);
+ if (mWindowInfosListeners.size() == 1) {
+ status = surfaceComposer->removeWindowInfosListener(this);
+ }
+
+ if (status == OK) {
+ mWindowInfosListeners.erase(windowInfosListener);
+ }
+ }
+
+ return status;
+}
+
+binder::Status WindowInfosListenerReporter::onWindowInfosChanged(
+ const std::vector<WindowInfo>& windowInfos) {
+ std::unordered_set<sp<WindowInfosListener>, ISurfaceComposer::SpHash<WindowInfosListener>>
+ windowInfosListeners;
+
+ {
+ std::scoped_lock lock(mListenersMutex);
+ for (auto listener : mWindowInfosListeners) {
+ windowInfosListeners.insert(listener);
+ }
+ }
+
+ for (auto listener : windowInfosListeners) {
+ listener->onWindowInfosChanged(windowInfos);
+ }
+
+ return binder::Status::ok();
+}
+
+void WindowInfosListenerReporter::reconnect(const sp<ISurfaceComposer>& composerService) {
+ std::scoped_lock lock(mListenersMutex);
+ if (!mWindowInfosListeners.empty()) {
+ composerService->addWindowInfosListener(this);
+ }
+}
+
+} // namespace android \ No newline at end of file
diff --git a/libs/gui/android/gui/IWindowInfosListener.aidl b/libs/gui/android/gui/IWindowInfosListener.aidl
new file mode 100644
index 0000000000..500d928a5a
--- /dev/null
+++ b/libs/gui/android/gui/IWindowInfosListener.aidl
@@ -0,0 +1,25 @@
+/*
+ * 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.
+ */
+
+package android.gui;
+
+import android.gui.WindowInfo;
+
+/** @hide */
+oneway interface IWindowInfosListener
+{
+ void onWindowInfosChanged(in WindowInfo[] windowInfos);
+}
diff --git a/libs/gui/include/gui/ISurfaceComposer.h b/libs/gui/include/gui/ISurfaceComposer.h
index 71b80d3929..ad7bcb7d12 100644
--- a/libs/gui/include/gui/ISurfaceComposer.h
+++ b/libs/gui/include/gui/ISurfaceComposer.h
@@ -22,6 +22,7 @@
#include <android/gui/IScreenCaptureListener.h>
#include <android/gui/ITransactionTraceListener.h>
#include <android/gui/ITunnelModeEnabledListener.h>
+#include <android/gui/IWindowInfosListener.h>
#include <binder/IBinder.h>
#include <binder/IInterface.h>
#include <ftl/Flags.h>
@@ -552,6 +553,11 @@ public:
* in MIN_UNDEQUEUED_BUFFERS.
*/
virtual status_t getMaxAcquiredBufferCount(int* buffers) const = 0;
+
+ virtual status_t addWindowInfosListener(
+ const sp<gui::IWindowInfosListener>& windowInfosListener) const = 0;
+ virtual status_t removeWindowInfosListener(
+ const sp<gui::IWindowInfosListener>& windowInfosListener) const = 0;
};
// ----------------------------------------------------------------------------
@@ -624,6 +630,8 @@ public:
ON_PULL_ATOM,
ADD_TUNNEL_MODE_ENABLED_LISTENER,
REMOVE_TUNNEL_MODE_ENABLED_LISTENER,
+ ADD_WINDOW_INFOS_LISTENER,
+ REMOVE_WINDOW_INFOS_LISTENER,
// Always append new enum to the end.
};
diff --git a/libs/gui/include/gui/SurfaceComposerClient.h b/libs/gui/include/gui/SurfaceComposerClient.h
index ff97fe4ce6..e718f3d478 100644
--- a/libs/gui/include/gui/SurfaceComposerClient.h
+++ b/libs/gui/include/gui/SurfaceComposerClient.h
@@ -42,6 +42,7 @@
#include <gui/ITransactionCompletedListener.h>
#include <gui/LayerState.h>
#include <gui/SurfaceControl.h>
+#include <gui/WindowInfosListenerReporter.h>
#include <math/vec3.h>
namespace android {
@@ -619,6 +620,9 @@ public:
static status_t removeTunnelModeEnabledListener(
const sp<gui::ITunnelModeEnabledListener>& listener);
+ status_t addWindowInfosListener(const sp<gui::WindowInfosListener>& windowInfosListener);
+ status_t removeWindowInfosListener(const sp<gui::WindowInfosListener>& windowInfosListener);
+
private:
virtual void onFirstRef();
diff --git a/libs/gui/include/gui/WindowInfosListener.h b/libs/gui/include/gui/WindowInfosListener.h
new file mode 100644
index 0000000000..8a70b9bb57
--- /dev/null
+++ b/libs/gui/include/gui/WindowInfosListener.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 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 <gui/WindowInfo.h>
+#include <utils/RefBase.h>
+
+namespace android::gui {
+
+class WindowInfosListener : public virtual RefBase {
+public:
+ virtual void onWindowInfosChanged(const std::vector<WindowInfo>& /*windowInfos*/) = 0;
+};
+} // namespace android::gui \ No newline at end of file
diff --git a/libs/gui/include/gui/WindowInfosListenerReporter.h b/libs/gui/include/gui/WindowInfosListenerReporter.h
new file mode 100644
index 0000000000..3e346de069
--- /dev/null
+++ b/libs/gui/include/gui/WindowInfosListenerReporter.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/BnWindowInfosListener.h>
+#include <binder/IBinder.h>
+#include <gui/ISurfaceComposer.h>
+#include <gui/WindowInfosListener.h>
+#include <utils/Mutex.h>
+#include <unordered_set>
+
+namespace android {
+class ISurfaceComposer;
+
+class WindowInfosListenerReporter : public gui::BnWindowInfosListener {
+public:
+ static sp<WindowInfosListenerReporter> getInstance();
+
+ binder::Status onWindowInfosChanged(const std::vector<gui::WindowInfo>& windowInfos) override;
+
+ status_t addWindowInfosListener(const sp<gui::WindowInfosListener>& windowInfosListener,
+ const sp<ISurfaceComposer>&);
+ status_t removeWindowInfosListener(const sp<gui::WindowInfosListener>& windowInfosListener,
+ const sp<ISurfaceComposer>&);
+ void reconnect(const sp<ISurfaceComposer>&);
+
+private:
+ std::mutex mListenersMutex;
+ std::unordered_set<sp<gui::WindowInfosListener>,
+ ISurfaceComposer::SpHash<gui::WindowInfosListener>>
+ mWindowInfosListeners GUARDED_BY(mListenersMutex);
+};
+} // namespace android \ No newline at end of file
diff --git a/libs/gui/tests/Surface_test.cpp b/libs/gui/tests/Surface_test.cpp
index 59b0c04bc3..a02970c9bc 100644
--- a/libs/gui/tests/Surface_test.cpp
+++ b/libs/gui/tests/Surface_test.cpp
@@ -904,6 +904,16 @@ public:
status_t getMaxAcquiredBufferCount(int* /*buffers*/) const override { return NO_ERROR; }
+ status_t addWindowInfosListener(
+ const sp<gui::IWindowInfosListener>& /*windowInfosListener*/) const override {
+ return NO_ERROR;
+ }
+
+ status_t removeWindowInfosListener(
+ const sp<gui::IWindowInfosListener>& /*windowInfosListener*/) const override {
+ return NO_ERROR;
+ }
+
protected:
IBinder* onAsBinder() override { return nullptr; }
diff --git a/services/surfaceflinger/Android.bp b/services/surfaceflinger/Android.bp
index 34b8281153..eeb3f3a288 100644
--- a/services/surfaceflinger/Android.bp
+++ b/services/surfaceflinger/Android.bp
@@ -158,6 +158,7 @@ filegroup {
"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 7f5569bd64..39f7e3290a 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 namespace android::sysprop;
using android::hardware::power::Boost;
using base::StringAppendF;
+using gui::IWindowInfosListener;
using gui::WindowInfo;
using ui::ColorMode;
using ui::Dataspace;
@@ -355,7 +357,8 @@ SurfaceFlinger::SurfaceFlinger(Factory& factory, SkipInitializationTag)
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 @@ status_t SurfaceFlinger::CheckTransactCodeCredentials(uint32_t code) {
}
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 @@ void SurfaceFlinger::onActiveDisplayChangedLocked(const sp<DisplayDevice>& activ
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 a88de872df..5a1b445e74 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -102,6 +102,7 @@ class RegionSamplingThread;
class RenderArea;
class TimeStats;
class FrameTracer;
+class WindowInfosListenerInvoker;
using gui::ScreenCaptureResults;
@@ -717,6 +718,11 @@ private:
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 @@ private:
}
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 0000000000..55136fb835
--- /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 0000000000..b979de1f70
--- /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
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