CE: flush the staged brightness to HWC before power off
After SurfaceFlinger receives the brightness commands, the commands are
sent to HWC until the next frame presents. However, no following frames
are present after the power mode is set to off, and HWC cannot receive
the last brightness commands.
This change forces SurfaceFlinger to flush the staged brightness to HWC
prior to execution of power off.
Bug: 239908529
Test: suspend and resume repeatedly
Change-Id: Ia8fb04399e757de16e06e6516d86bdfcfabd5a2e
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/Display.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/Display.h
index 16cb41b..5e84be1 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/Display.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/Display.h
@@ -56,6 +56,9 @@
// similar requests if needed.
virtual void createClientCompositionCache(uint32_t cacheSize) = 0;
+ // Sends the brightness setting to HWC
+ virtual void applyDisplayBrightness(const bool applyImmediately) = 0;
+
protected:
~Display() = default;
};
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
index fa7bc5d..33a10a3 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
@@ -72,6 +72,7 @@
const compositionengine::DisplayColorProfileCreationArgs&) override;
void createRenderSurface(const compositionengine::RenderSurfaceCreationArgs&) override;
void createClientCompositionCache(uint32_t cacheSize) override;
+ void applyDisplayBrightness(const bool applyImmediately) override;
// Internal helpers used by chooseCompositionStrategy()
using ChangedTypes = android::HWComposer::DeviceRequestedChanges::ChangedTypes;
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Display.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Display.h
index 72e6f3b..7e99ec2 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Display.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Display.h
@@ -41,6 +41,7 @@
MOCK_METHOD1(createDisplayColorProfile, void(const DisplayColorProfileCreationArgs&));
MOCK_METHOD1(createRenderSurface, void(const RenderSurfaceCreationArgs&));
MOCK_METHOD1(createClientCompositionCache, void(uint32_t));
+ MOCK_METHOD1(applyDisplayBrightness, void(const bool));
MOCK_METHOD1(setPredictCompositionStrategy, void(bool));
};
diff --git a/services/surfaceflinger/CompositionEngine/src/Display.cpp b/services/surfaceflinger/CompositionEngine/src/Display.cpp
index ea856e4..1ec6449 100644
--- a/services/surfaceflinger/CompositionEngine/src/Display.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Display.cpp
@@ -203,6 +203,24 @@
setReleasedLayers(std::move(releasedLayers));
}
+void Display::applyDisplayBrightness(const bool applyImmediately) {
+ auto& hwc = getCompositionEngine().getHwComposer();
+ const auto halDisplayId = HalDisplayId::tryCast(*getDisplayId());
+ if (const auto physicalDisplayId = PhysicalDisplayId::tryCast(*halDisplayId);
+ physicalDisplayId && getState().displayBrightness) {
+ const status_t result =
+ hwc.setDisplayBrightness(*physicalDisplayId, *getState().displayBrightness,
+ getState().displayBrightnessNits,
+ Hwc2::Composer::DisplayBrightnessOptions{
+ .applyImmediately = applyImmediately})
+ .get();
+ ALOGE_IF(result != NO_ERROR, "setDisplayBrightness failed for %s: %d, (%s)",
+ getName().c_str(), result, strerror(-result));
+ }
+ // Clear out the display brightness now that it's been communicated to composer.
+ editState().displayBrightness.reset();
+}
+
void Display::beginFrame() {
Output::beginFrame();
@@ -212,20 +230,7 @@
return;
}
- auto& hwc = getCompositionEngine().getHwComposer();
- if (const auto physicalDisplayId = PhysicalDisplayId::tryCast(*halDisplayId);
- physicalDisplayId && getState().displayBrightness) {
- const status_t result =
- hwc.setDisplayBrightness(*physicalDisplayId, *getState().displayBrightness,
- getState().displayBrightnessNits,
- Hwc2::Composer::DisplayBrightnessOptions{
- .applyImmediately = false})
- .get();
- ALOGE_IF(result != NO_ERROR, "setDisplayBrightness failed for %s: %d, (%s)",
- getName().c_str(), result, strerror(-result));
- }
- // Clear out the display brightness now that it's been communicated to composer.
- editState().displayBrightness.reset();
+ applyDisplayBrightness(false);
}
bool Display::chooseCompositionStrategy(
diff --git a/services/surfaceflinger/DisplayDevice.cpp b/services/surfaceflinger/DisplayDevice.cpp
index 8680900..3bc3ae5 100644
--- a/services/surfaceflinger/DisplayDevice.cpp
+++ b/services/surfaceflinger/DisplayDevice.cpp
@@ -173,6 +173,15 @@
}
void DisplayDevice::setPowerMode(hal::PowerMode mode) {
+ if (mode == hal::PowerMode::OFF || mode == hal::PowerMode::ON) {
+ if (mStagedBrightness && mBrightness != *mStagedBrightness) {
+ getCompositionDisplay()->setNextBrightness(*mStagedBrightness);
+ mBrightness = *mStagedBrightness;
+ }
+ mStagedBrightness = std::nullopt;
+ getCompositionDisplay()->applyDisplayBrightness(true);
+ }
+
mPowerMode = mode;
getCompositionDisplay()->setCompositionEnabled(mPowerMode != hal::PowerMode::OFF);
}