Merge "[gui] Add {add,remove}RegionSamplingListener"diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index f40eb6c..0510492 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -104,6 +104,7 @@
"IGraphicBufferConsumer.cpp",
"IGraphicBufferProducer.cpp",
"IProducerListener.cpp",
+ "IRegionSamplingListener.cpp",
"ISurfaceComposer.cpp",
"ISurfaceComposerClient.cpp",
"ITransactionCompletedListener.cpp",
diff --git a/libs/gui/IRegionSamplingListener.cpp b/libs/gui/IRegionSamplingListener.cpp
new file mode 100644
index 0000000..40cbfce
--- /dev/null
+++ b/libs/gui/IRegionSamplingListener.cpp
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2019 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.
+ */
+
+#define LOG_TAG "IRegionSamplingListener"
+//#define LOG_NDEBUG 0
+
+#include <gui/IRegionSamplingListener.h>
+
+namespace android {
+
+namespace { // Anonymous
+
+enum class Tag : uint32_t {
+ ON_SAMPLE_COLLECTED = IBinder::FIRST_CALL_TRANSACTION,
+ LAST = ON_SAMPLE_COLLECTED,
+};
+
+} // Anonymous namespace
+
+class BpRegionSamplingListener : public SafeBpInterface<IRegionSamplingListener> {
+public:
+ explicit BpRegionSamplingListener(const sp<IBinder>& impl)
+ : SafeBpInterface<IRegionSamplingListener>(impl, "BpRegionSamplingListener") {}
+
+ ~BpRegionSamplingListener() override;
+
+ void onSampleCollected(float medianLuma) override {
+ callRemoteAsync<decltype(
+ &IRegionSamplingListener::onSampleCollected)>(Tag::ON_SAMPLE_COLLECTED, medianLuma);
+ }
+};
+
+// Out-of-line virtual method definitions to trigger vtable emission in this translation unit (see
+// clang warning -Wweak-vtables)
+BpRegionSamplingListener::~BpRegionSamplingListener() = default;
+
+IMPLEMENT_META_INTERFACE(RegionSamplingListener, "android.gui.IRegionSamplingListener");
+
+status_t BnRegionSamplingListener::onTransact(uint32_t code, const Parcel& data, Parcel* reply,
+ uint32_t flags) {
+ if (code < IBinder::FIRST_CALL_TRANSACTION || code > static_cast<uint32_t>(Tag::LAST)) {
+ return BBinder::onTransact(code, data, reply, flags);
+ }
+ auto tag = static_cast<Tag>(code);
+ switch (tag) {
+ case Tag::ON_SAMPLE_COLLECTED:
+ return callLocalAsync(data, reply, &IRegionSamplingListener::onSampleCollected);
+ }
+}
+
+} // namespace android
diff --git a/libs/gui/ISurfaceComposer.cpp b/libs/gui/ISurfaceComposer.cpp
index fc9185d..f77eeb2 100644
--- a/libs/gui/ISurfaceComposer.cpp
+++ b/libs/gui/ISurfaceComposer.cpp
@@ -26,6 +26,7 @@
#include <gui/IDisplayEventConnection.h>
#include <gui/IGraphicBufferProducer.h>
+#include <gui/IRegionSamplingListener.h>
#include <gui/ISurfaceComposer.h>
#include <gui/ISurfaceComposerClient.h>
#include <gui/LayerDebugInfo.h>
@@ -754,6 +755,57 @@
error = reply.readBool(outIsWideColorDisplay);
return error;
}
+
+ virtual status_t addRegionSamplingListener(const Rect& samplingArea,
+ const sp<IBinder>& stopLayerHandle,
+ const sp<IRegionSamplingListener>& listener) {
+ Parcel data, reply;
+ status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+ if (error != NO_ERROR) {
+ ALOGE("addRegionSamplingListener: Failed to write interface token");
+ return error;
+ }
+ error = data.write(samplingArea);
+ if (error != NO_ERROR) {
+ ALOGE("addRegionSamplingListener: Failed to write sampling area");
+ return error;
+ }
+ error = data.writeStrongBinder(stopLayerHandle);
+ if (error != NO_ERROR) {
+ ALOGE("addRegionSamplingListener: Failed to write stop layer handle");
+ return error;
+ }
+ error = data.writeStrongBinder(IInterface::asBinder(listener));
+ if (error != NO_ERROR) {
+ ALOGE("addRegionSamplingListener: Failed to write listener");
+ return error;
+ }
+ error = remote()->transact(BnSurfaceComposer::ADD_REGION_SAMPLING_LISTENER, data, &reply);
+ if (error != NO_ERROR) {
+ ALOGE("addRegionSamplingListener: Failed to transact");
+ }
+ return error;
+ }
+
+ virtual status_t removeRegionSamplingListener(const sp<IRegionSamplingListener>& listener) {
+ Parcel data, reply;
+ status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+ if (error != NO_ERROR) {
+ ALOGE("addRegionSamplingListener: Failed to write interface token");
+ return error;
+ }
+ error = data.writeStrongBinder(IInterface::asBinder(listener));
+ if (error != NO_ERROR) {
+ ALOGE("addRegionSamplingListener: Failed to write listener");
+ return error;
+ }
+ error = remote()->transact(BnSurfaceComposer::REMOVE_REGION_SAMPLING_LISTENER, data,
+ &reply);
+ if (error != NO_ERROR) {
+ ALOGE("addRegionSamplingListener: Failed to transact");
+ }
+ return error;
+ }
};
// Out-of-line virtual method definition to trigger vtable emission in this
@@ -1233,6 +1285,38 @@
CHECK_INTERFACE(ISurfaceComposer, data, reply);
return reply->writeUint64Vector(getPhysicalDisplayIds());
}
+ case ADD_REGION_SAMPLING_LISTENER: {
+ CHECK_INTERFACE(ISurfaceComposer, data, reply);
+ Rect samplingArea;
+ status_t result = data.read(samplingArea);
+ if (result != NO_ERROR) {
+ ALOGE("addRegionSamplingListener: Failed to read sampling area");
+ return result;
+ }
+ sp<IBinder> stopLayerHandle;
+ result = data.readNullableStrongBinder(&stopLayerHandle);
+ if (result != NO_ERROR) {
+ ALOGE("addRegionSamplingListener: Failed to read stop layer handle");
+ return result;
+ }
+ sp<IRegionSamplingListener> listener;
+ result = data.readNullableStrongBinder(&listener);
+ if (result != NO_ERROR) {
+ ALOGE("addRegionSamplingListener: Failed to read listener");
+ return result;
+ }
+ return addRegionSamplingListener(samplingArea, stopLayerHandle, listener);
+ }
+ case REMOVE_REGION_SAMPLING_LISTENER: {
+ CHECK_INTERFACE(ISurfaceComposer, data, reply);
+ sp<IRegionSamplingListener> listener;
+ status_t result = data.readNullableStrongBinder(&listener);
+ if (result != NO_ERROR) {
+ ALOGE("removeRegionSamplingListener: Failed to read listener");
+ return result;
+ }
+ return removeRegionSamplingListener(listener);
+ }
default: {
return BBinder::onTransact(code, data, reply, flags);
}
diff --git a/libs/gui/include/gui/IRegionSamplingListener.h b/libs/gui/include/gui/IRegionSamplingListener.h
new file mode 100644
index 0000000..1803d9a
--- /dev/null
+++ b/libs/gui/include/gui/IRegionSamplingListener.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2019 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 <cstdint>
+#include <vector>
+
+#include <binder/IInterface.h>
+#include <binder/SafeInterface.h>
+
+namespace android {
+
+class IRegionSamplingListener : public IInterface {
+public:
+ DECLARE_META_INTERFACE(RegionSamplingListener)
+
+ virtual void onSampleCollected(float medianLuma) = 0;
+};
+
+class BnRegionSamplingListener : public SafeBnInterface<IRegionSamplingListener> {
+public:
+ BnRegionSamplingListener()
+ : SafeBnInterface<IRegionSamplingListener>("BnRegionSamplingListener") {}
+
+ status_t onTransact(uint32_t code, const Parcel& data, Parcel* reply,
+ uint32_t flags = 0) override;
+};
+
+} // namespace android
diff --git a/libs/gui/include/gui/ISurfaceComposer.h b/libs/gui/include/gui/ISurfaceComposer.h
index a2db7bc..1a0b6bb 100644
--- a/libs/gui/include/gui/ISurfaceComposer.h
+++ b/libs/gui/include/gui/ISurfaceComposer.h
@@ -50,6 +50,7 @@
class IDisplayEventConnection;
class IGraphicBufferProducer;
class ISurfaceComposerClient;
+class IRegionSamplingListener;
class Rect;
enum class FrameEvent;
@@ -338,6 +339,26 @@
*/
virtual status_t isWideColorDisplay(const sp<IBinder>& token,
bool* outIsWideColorDisplay) const = 0;
+
+ /* Registers a listener to stream median luma updates from SurfaceFlinger.
+ *
+ * The sampling area is bounded by both samplingArea and the given stopLayerHandle
+ * (i.e., only layers behind the stop layer will be captured and sampled).
+ *
+ * Multiple listeners may be provided so long as they have independent listeners.
+ * If multiple listeners are provided, the effective sampling region for each listener will
+ * be bounded by whichever stop layer has a lower Z value.
+ *
+ * Requires the same permissions as captureLayers and captureScreen.
+ */
+ virtual status_t addRegionSamplingListener(const Rect& samplingArea,
+ const sp<IBinder>& stopLayerHandle,
+ const sp<IRegionSamplingListener>& listener) = 0;
+
+ /*
+ * Removes a listener that was streaming median luma updates from SurfaceFlinger.
+ */
+ virtual status_t removeRegionSamplingListener(const sp<IRegionSamplingListener>& listener) = 0;
};
// ----------------------------------------------------------------------------
@@ -383,6 +404,8 @@
IS_WIDE_COLOR_DISPLAY,
GET_DISPLAY_NATIVE_PRIMARIES,
GET_PHYSICAL_DISPLAY_IDS,
+ ADD_REGION_SAMPLING_LISTENER,
+ REMOVE_REGION_SAMPLING_LISTENER,
// Always append new enum to the end.
};
diff --git a/libs/gui/tests/Surface_test.cpp b/libs/gui/tests/Surface_test.cpp
index bec9299..f127853 100644
--- a/libs/gui/tests/Surface_test.cpp
+++ b/libs/gui/tests/Surface_test.cpp
@@ -669,6 +669,16 @@
status_t isWideColorDisplay(const sp<IBinder>&, bool*) const override { return NO_ERROR; }
+ status_t addRegionSamplingListener(const Rect& /*samplingArea*/,
+ const sp<IBinder>& /*stopLayerHandle*/,
+ const sp<IRegionSamplingListener>& /*listener*/) override {
+ return NO_ERROR;
+ }
+ status_t removeRegionSamplingListener(
+ const sp<IRegionSamplingListener>& /*listener*/) override {
+ return NO_ERROR;
+ }
+
protected:
IBinder* onAsBinder() override { return nullptr; }
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index f9000b5..48b1a77 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -1324,6 +1324,17 @@
return NO_ERROR;
}
+status_t SurfaceFlinger::addRegionSamplingListener(
+ const Rect& /*samplingArea*/, const sp<IBinder>& /*stopLayerHandle*/,
+ const sp<IRegionSamplingListener>& /*listener*/) {
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::removeRegionSamplingListener(
+ const sp<IRegionSamplingListener>& /*listener*/) {
+ return NO_ERROR;
+}
+
// ----------------------------------------------------------------------------
sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection(
@@ -5121,7 +5132,9 @@
return OK;
}
case CAPTURE_LAYERS:
- case CAPTURE_SCREEN: {
+ case CAPTURE_SCREEN:
+ case ADD_REGION_SAMPLING_LISTENER:
+ case REMOVE_REGION_SAMPLING_LISTENER: {
// codes that require permission check
IPCThreadState* ipc = IPCThreadState::self();
const int pid = ipc->getCallingPid();
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 060fc7a..669d3a1 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -476,7 +476,9 @@
status_t getProtectedContentSupport(bool* outSupported) const override;
status_t isWideColorDisplay(const sp<IBinder>& displayToken,
bool* outIsWideColorDisplay) const override;
-
+ status_t addRegionSamplingListener(const Rect& samplingArea, const sp<IBinder>& stopLayerHandle,
+ const sp<IRegionSamplingListener>& listener) override;
+ status_t removeRegionSamplingListener(const sp<IRegionSamplingListener>& listener) override;
/* ------------------------------------------------------------------------
* DeathRecipient interface
*/