Add HWC2::setBlockingRegion

Implement from here down: the blocking region is passed to
HidlComposerHal (which ignores it) and AidlComposerHal (which respects
it).

Depends on Ib0fa41e56196feeff201637d5599830d2565da2b.

Bug: 212736475
Test: TODO (b/213361853)
Change-Id: I991c8e1beca22075ec831f96dff218e6af3d9a08
diff --git a/services/surfaceflinger/DisplayHardware/AidlComposerHal.cpp b/services/surfaceflinger/DisplayHardware/AidlComposerHal.cpp
index 1091a75..293a2b2 100644
--- a/services/surfaceflinger/DisplayHardware/AidlComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/AidlComposerHal.cpp
@@ -1035,5 +1035,11 @@
     return Error::NONE;
 }
 
+Error AidlComposer::setLayerBlockingRegion(Display display, Layer layer,
+                                           const std::vector<IComposerClient::Rect>& blocking) {
+    mWriter.setLayerBlockingRegion(translate<int64_t>(display), translate<int64_t>(layer),
+                                   translate<AidlRect>(blocking));
+    return Error::NONE;
+}
 } // namespace Hwc2
 } // namespace android
diff --git a/services/surfaceflinger/DisplayHardware/AidlComposerHal.h b/services/surfaceflinger/DisplayHardware/AidlComposerHal.h
index 5c41982..20afee5 100644
--- a/services/surfaceflinger/DisplayHardware/AidlComposerHal.h
+++ b/services/surfaceflinger/DisplayHardware/AidlComposerHal.h
@@ -207,7 +207,11 @@
     Error getClientTargetProperty(Display display,
                                   IComposerClient::ClientTargetProperty* outClientTargetProperty,
                                   float* outClientTargetWhitePointNits) override;
+
+    // AIDL Composer HAL
     Error setLayerWhitePointNits(Display display, Layer layer, float whitePointNits) override;
+    Error setLayerBlockingRegion(Display display, Layer layer,
+                                 const std::vector<IComposerClient::Rect>& blocking) override;
 
 private:
     // Many public functions above simply write a command into the command
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.h b/services/surfaceflinger/DisplayHardware/ComposerHal.h
index f491a00..c93051e 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.h
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.h
@@ -237,6 +237,8 @@
 
     // AIDL Composer
     virtual Error setLayerWhitePointNits(Display display, Layer layer, float whitePointNits) = 0;
+    virtual Error setLayerBlockingRegion(Display display, Layer layer,
+                                         const std::vector<IComposerClient::Rect>& blocking) = 0;
 };
 
 } // namespace android::Hwc2
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.cpp b/services/surfaceflinger/DisplayHardware/HWC2.cpp
index 6778438..cd36eea 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWC2.cpp
@@ -932,6 +932,21 @@
     return static_cast<Error>(intError);
 }
 
+Error Layer::setBlockingRegion(const Region& region) {
+    if (CC_UNLIKELY(!mDisplay)) {
+        return Error::BAD_DISPLAY;
+    }
+
+    if (region.isRect() && mBlockingRegion.isRect() &&
+        (region.getBounds() == mBlockingRegion.getBounds())) {
+        return Error::NONE;
+    }
+    mBlockingRegion = region;
+    const auto hwcRects = convertRegionToHwcRects(region);
+    const auto intError = mComposer.setLayerBlockingRegion(mDisplay->getId(), mId, hwcRects);
+    return static_cast<Error>(intError);
+}
+
 } // namespace impl
 } // namespace HWC2
 } // namespace android
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.h b/services/surfaceflinger/DisplayHardware/HWC2.h
index 731d7f6..f833393 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.h
+++ b/services/surfaceflinger/DisplayHardware/HWC2.h
@@ -305,6 +305,8 @@
 
     // AIDL HAL
     [[clang::warn_unused_result]] virtual hal::Error setWhitePointNits(float whitePointNits) = 0;
+    [[clang::warn_unused_result]] virtual hal::Error setBlockingRegion(
+            const android::Region& region) = 0;
 };
 
 namespace impl {
@@ -351,6 +353,7 @@
 
     // AIDL HAL
     hal::Error setWhitePointNits(float whitePointNits) override;
+    hal::Error setBlockingRegion(const android::Region& region) override;
 
 private:
     // These are references to data owned by HWC2::Device, which will outlive
@@ -366,6 +369,7 @@
     // multiple times.
     android::Region mVisibleRegion = android::Region::INVALID_REGION;
     android::Region mDamageRegion = android::Region::INVALID_REGION;
+    android::Region mBlockingRegion = android::Region::INVALID_REGION;
     hal::Dataspace mDataSpace = hal::Dataspace::UNKNOWN;
     android::HdrMetadata mHdrMetadata;
     android::mat4 mColorMatrix;
diff --git a/services/surfaceflinger/DisplayHardware/HidlComposerHal.cpp b/services/surfaceflinger/DisplayHardware/HidlComposerHal.cpp
index 7946002..1ce9ccb 100644
--- a/services/surfaceflinger/DisplayHardware/HidlComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/HidlComposerHal.cpp
@@ -1208,6 +1208,11 @@
     return Error::NONE;
 }
 
+Error HidlComposer::setLayerBlockingRegion(Display, Layer,
+                                           const std::vector<IComposerClient::Rect>&) {
+    return Error::NONE;
+}
+
 CommandReader::~CommandReader() {
     resetData();
 }
diff --git a/services/surfaceflinger/DisplayHardware/HidlComposerHal.h b/services/surfaceflinger/DisplayHardware/HidlComposerHal.h
index 3b62fe0..8b98334 100644
--- a/services/surfaceflinger/DisplayHardware/HidlComposerHal.h
+++ b/services/surfaceflinger/DisplayHardware/HidlComposerHal.h
@@ -316,7 +316,11 @@
     Error getClientTargetProperty(Display display,
                                   IComposerClient::ClientTargetProperty* outClientTargetProperty,
                                   float* outWhitePointNits) override;
+
+    // AIDL Composer HAL
     Error setLayerWhitePointNits(Display display, Layer layer, float whitePointNits) override;
+    Error setLayerBlockingRegion(Display display, Layer layer,
+                                 const std::vector<IComposerClient::Rect>& blocking) override;
 
 private:
     class CommandWriter : public CommandWriterBase {