HWC2: Add getHdrCapabilities to C++ shim

Adds support for the getHdrCapabilities call to the HWC2 C++ shim.

Bug: 25684127
Change-Id: Ib4635ee437a06b48945e7f0328492c1e74e27aaa

5 files changed, 201 insertions, 37 deletions

diff --git a/include/ui/HdrCapabilities.h b/include/ui/HdrCapabilities.h
new file mode 100644
index 0000000000..a7cd5fb58e
--- /dev/null
+++ b/include/ui/HdrCapabilities.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2016 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.
+ */
+
+#ifndef ANDROID_UI_HDR_CAPABILTIES_H
+#define ANDROID_UI_HDR_CAPABILTIES_H
+
+#include <binder/Parcelable.h>
+
+namespace android {
+
+class HdrCapabilities : public Parcelable
+{
+public:
+    HdrCapabilities(const std::vector<int32_t /*android_hdr_t*/>& types,
+            float maxLuminance, float maxAverageLuminance, float minLuminance)
+      : mSupportedHdrTypes(types),
+        mMaxLuminance(maxLuminance),
+        mMaxAverageLuminance(maxAverageLuminance),
+        mMinLuminance(minLuminance) {}
+
+    // Make this move-constructable and move-assignable
+    HdrCapabilities(HdrCapabilities&& other) = default;
+    HdrCapabilities& operator=(HdrCapabilities&& other) = default;
+
+    HdrCapabilities()
+      : mSupportedHdrTypes(),
+        mMaxLuminance(-1.0f),
+        mMaxAverageLuminance(-1.0f),
+        mMinLuminance(-1.0f) {}
+
+    virtual ~HdrCapabilities() = default;
+
+    const std::vector<int32_t /*android_hdr_t*/>& getSupportedHdrTypes() const {
+        return mSupportedHdrTypes;
+    }
+    float getDesiredMaxLuminance() const { return mMaxLuminance; }
+    float getDesiredMaxAverageLuminance() const { return mMaxAverageLuminance; }
+    float getDesiredMinLuminance() const { return mMinLuminance; }
+
+    // Parcelable interface
+    virtual status_t writeToParcel(Parcel* parcel) const override;
+    virtual status_t readFromParcel(const Parcel* parcel) override;
+
+private:
+    std::vector<int32_t /*android_hdr_t*/> mSupportedHdrTypes;
+    float mMaxLuminance;
+    float mMaxAverageLuminance;
+    float mMinLuminance;
+};
+
+} // namespace android
+
+#endif
diff --git a/libs/ui/Android.mk b/libs/ui/Android.mk
index e4cdcab04a..ee6c093bcf 100644
--- a/libs/ui/Android.mk
+++ b/libs/ui/Android.mk
@@ -40,12 +40,14 @@ LOCAL_SRC_FILES := \
 	GraphicBuffer.cpp \
 	GraphicBufferAllocator.cpp \
 	GraphicBufferMapper.cpp \
+	HdrCapabilities.cpp \
 	PixelFormat.cpp \
 	Rect.cpp \
 	Region.cpp \
 	UiConfig.cpp
 
 LOCAL_SHARED_LIBRARIES := \
+	libbinder \
 	libcutils \
 	libhardware \
 	libsync \
diff --git a/libs/ui/HdrCapabilities.cpp b/libs/ui/HdrCapabilities.cpp
new file mode 100644
index 0000000000..511f68ab4c
--- /dev/null
+++ b/libs/ui/HdrCapabilities.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2016 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 <ui/HdrCapabilities.h>
+
+#include <binder/Parcel.h>
+
+namespace android {
+
+status_t HdrCapabilities::writeToParcel(Parcel* parcel) const
+{
+    status_t result = parcel->writeInt32Vector(mSupportedHdrTypes);
+    if (result != OK) {
+        return result;
+    }
+    result = parcel->writeFloat(mMaxLuminance);
+    if (result != OK) {
+        return result;
+    }
+    result = parcel->writeFloat(mMaxAverageLuminance);
+    if (result != OK) {
+        return result;
+    }
+    result = parcel->writeFloat(mMinLuminance);
+    return result;
+}
+
+status_t HdrCapabilities::readFromParcel(const Parcel* parcel)
+{
+    status_t result = parcel->readInt32Vector(&mSupportedHdrTypes);
+    if (result != OK) {
+        return result;
+    }
+    result = parcel->readFloat(&mMaxLuminance);
+    if (result != OK) {
+        return result;
+    }
+    result = parcel->readFloat(&mMaxAverageLuminance);
+    if (result != OK) {
+        return result;
+    }
+    result = parcel->readFloat(&mMinLuminance);
+    return result;
+}
+
+} // namespace android
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.cpp b/services/surfaceflinger/DisplayHardware/HWC2.cpp
index 0e97a5382a..5c78c68ef2 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWC2.cpp
@@ -74,6 +74,7 @@ extern "C" {
 using android::Fence;
 using android::FloatRect;
 using android::GraphicBuffer;
+using android::HdrCapabilities;
 using android::Rect;
 using android::Region;
 using android::sp;
@@ -100,6 +101,7 @@ Device::Device(hwc2_device_t* device)
     mGetDisplayRequests(nullptr),
     mGetDisplayType(nullptr),
     mGetDozeSupport(nullptr),
+    mGetHdrCapabilities(nullptr),
     mGetReleaseFences(nullptr),
     mPresentDisplay(nullptr),
     mSetActiveConfig(nullptr),
@@ -307,82 +309,84 @@ void Device::loadFunctionPointers()
     // loadFunctionPointer specifying which function failed to load
 
     // Display function pointers
-    if(!loadFunctionPointer(FunctionDescriptor::CreateVirtualDisplay,
+    if (!loadFunctionPointer(FunctionDescriptor::CreateVirtualDisplay,
             mCreateVirtualDisplay)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::DestroyVirtualDisplay,
+    if (!loadFunctionPointer(FunctionDescriptor::DestroyVirtualDisplay,
             mDestroyVirtualDisplay)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::Dump, mDump)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::GetMaxVirtualDisplayCount,
+    if (!loadFunctionPointer(FunctionDescriptor::Dump, mDump)) return;
+    if (!loadFunctionPointer(FunctionDescriptor::GetMaxVirtualDisplayCount,
             mGetMaxVirtualDisplayCount)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::RegisterCallback,
+    if (!loadFunctionPointer(FunctionDescriptor::RegisterCallback,
             mRegisterCallback)) return;
 
     // Device function pointers
-    if(!loadFunctionPointer(FunctionDescriptor::AcceptDisplayChanges,
+    if (!loadFunctionPointer(FunctionDescriptor::AcceptDisplayChanges,
             mAcceptDisplayChanges)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::CreateLayer,
+    if (!loadFunctionPointer(FunctionDescriptor::CreateLayer,
             mCreateLayer)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::DestroyLayer,
+    if (!loadFunctionPointer(FunctionDescriptor::DestroyLayer,
             mDestroyLayer)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::GetActiveConfig,
+    if (!loadFunctionPointer(FunctionDescriptor::GetActiveConfig,
             mGetActiveConfig)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::GetChangedCompositionTypes,
+    if (!loadFunctionPointer(FunctionDescriptor::GetChangedCompositionTypes,
             mGetChangedCompositionTypes)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::GetDisplayAttribute,
+    if (!loadFunctionPointer(FunctionDescriptor::GetDisplayAttribute,
             mGetDisplayAttribute)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::GetDisplayConfigs,
+    if (!loadFunctionPointer(FunctionDescriptor::GetDisplayConfigs,
             mGetDisplayConfigs)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::GetDisplayName,
+    if (!loadFunctionPointer(FunctionDescriptor::GetDisplayName,
             mGetDisplayName)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::GetDisplayRequests,
+    if (!loadFunctionPointer(FunctionDescriptor::GetDisplayRequests,
             mGetDisplayRequests)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::GetDisplayType,
+    if (!loadFunctionPointer(FunctionDescriptor::GetDisplayType,
             mGetDisplayType)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::GetDozeSupport,
+    if (!loadFunctionPointer(FunctionDescriptor::GetDozeSupport,
             mGetDozeSupport)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::GetReleaseFences,
+    if (!loadFunctionPointer(FunctionDescriptor::GetHdrCapabilities,
+            mGetHdrCapabilities)) return;
+    if (!loadFunctionPointer(FunctionDescriptor::GetReleaseFences,
             mGetReleaseFences)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::PresentDisplay,
+    if (!loadFunctionPointer(FunctionDescriptor::PresentDisplay,
             mPresentDisplay)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetActiveConfig,
+    if (!loadFunctionPointer(FunctionDescriptor::SetActiveConfig,
             mSetActiveConfig)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetClientTarget,
+    if (!loadFunctionPointer(FunctionDescriptor::SetClientTarget,
             mSetClientTarget)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetOutputBuffer,
+    if (!loadFunctionPointer(FunctionDescriptor::SetOutputBuffer,
             mSetOutputBuffer)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetPowerMode,
+    if (!loadFunctionPointer(FunctionDescriptor::SetPowerMode,
             mSetPowerMode)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetVsyncEnabled,
+    if (!loadFunctionPointer(FunctionDescriptor::SetVsyncEnabled,
             mSetVsyncEnabled)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::ValidateDisplay,
+    if (!loadFunctionPointer(FunctionDescriptor::ValidateDisplay,
             mValidateDisplay)) return;
 
     // Layer function pointers
-    if(!loadFunctionPointer(FunctionDescriptor::SetCursorPosition,
+    if (!loadFunctionPointer(FunctionDescriptor::SetCursorPosition,
             mSetCursorPosition)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetLayerBuffer,
+    if (!loadFunctionPointer(FunctionDescriptor::SetLayerBuffer,
             mSetLayerBuffer)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetLayerSurfaceDamage,
+    if (!loadFunctionPointer(FunctionDescriptor::SetLayerSurfaceDamage,
             mSetLayerSurfaceDamage)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetLayerBlendMode,
+    if (!loadFunctionPointer(FunctionDescriptor::SetLayerBlendMode,
             mSetLayerBlendMode)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetLayerColor,
+    if (!loadFunctionPointer(FunctionDescriptor::SetLayerColor,
             mSetLayerColor)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetLayerCompositionType,
+    if (!loadFunctionPointer(FunctionDescriptor::SetLayerCompositionType,
             mSetLayerCompositionType)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetLayerDisplayFrame,
+    if (!loadFunctionPointer(FunctionDescriptor::SetLayerDisplayFrame,
             mSetLayerDisplayFrame)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetLayerPlaneAlpha,
+    if (!loadFunctionPointer(FunctionDescriptor::SetLayerPlaneAlpha,
             mSetLayerPlaneAlpha)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetLayerSidebandStream,
+    if (!loadFunctionPointer(FunctionDescriptor::SetLayerSidebandStream,
             mSetLayerSidebandStream)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetLayerSourceCrop,
+    if (!loadFunctionPointer(FunctionDescriptor::SetLayerSourceCrop,
             mSetLayerSourceCrop)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetLayerTransform,
+    if (!loadFunctionPointer(FunctionDescriptor::SetLayerTransform,
             mSetLayerTransform)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetLayerVisibleRegion,
+    if (!loadFunctionPointer(FunctionDescriptor::SetLayerVisibleRegion,
             mSetLayerVisibleRegion)) return;
-    if(!loadFunctionPointer(FunctionDescriptor::SetLayerZOrder,
+    if (!loadFunctionPointer(FunctionDescriptor::SetLayerZOrder,
             mSetLayerZOrder)) return;
 }
 
@@ -637,6 +641,34 @@ Error Display::supportsDoze(bool* outSupport) const
     return Error::None;
 }
 
+Error Display::getHdrCapabilities(
+        std::unique_ptr<HdrCapabilities>* outCapabilities) const
+{
+    uint32_t numTypes = 0;
+    float maxLuminance = -1.0f;
+    float maxAverageLuminance = -1.0f;
+    float minLuminance = -1.0f;
+    int32_t intError = mDevice.mGetHdrCapabilities(mDevice.mHwcDevice, mId,
+            &numTypes, nullptr, &maxLuminance, &maxAverageLuminance,
+            &minLuminance);
+    auto error = static_cast<HWC2::Error>(intError);
+    if (error != Error::None) {
+        return error;
+    }
+
+    std::vector<int32_t> types(numTypes);
+    intError = mDevice.mGetHdrCapabilities(mDevice.mHwcDevice, mId, &numTypes,
+            types.data(), &maxLuminance, &maxAverageLuminance, &minLuminance);
+    error = static_cast<HWC2::Error>(intError);
+    if (error != Error::None) {
+        return error;
+    }
+
+    *outCapabilities = std::make_unique<HdrCapabilities>(std::move(types),
+            maxLuminance, maxAverageLuminance, minLuminance);
+    return Error::None;
+}
+
 Error Display::getReleaseFences(
         std::unordered_map<std::shared_ptr<Layer>, sp<Fence>>* outFences) const
 {
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.h b/services/surfaceflinger/DisplayHardware/HWC2.h
index a7bd28c2e7..7d33a0a4d4 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.h
+++ b/services/surfaceflinger/DisplayHardware/HWC2.h
@@ -23,6 +23,8 @@
 #undef HWC2_INCLUDE_STRINGIFICATION
 #undef HWC2_USE_CPP11
 
+#include <ui/HdrCapabilities.h>
+
 #include <utils/Log.h>
 #include <utils/StrongPointer.h>
 #include <utils/Timers.h>
@@ -145,6 +147,7 @@ private:
     HWC2_PFN_GET_DISPLAY_REQUESTS mGetDisplayRequests;
     HWC2_PFN_GET_DISPLAY_TYPE mGetDisplayType;
     HWC2_PFN_GET_DOZE_SUPPORT mGetDozeSupport;
+    HWC2_PFN_GET_HDR_CAPABILITIES mGetHdrCapabilities;
     HWC2_PFN_GET_RELEASE_FENCES mGetReleaseFences;
     HWC2_PFN_PRESENT_DISPLAY mPresentDisplay;
     HWC2_PFN_SET_ACTIVE_CONFIG mSetActiveConfig;
@@ -279,6 +282,8 @@ public:
                     outLayerRequests);
     [[clang::warn_unused_result]] Error getType(DisplayType* outType) const;
     [[clang::warn_unused_result]] Error supportsDoze(bool* outSupport) const;
+    [[clang::warn_unused_result]] Error getHdrCapabilities(
+            std::unique_ptr<android::HdrCapabilities>* outCapabilities) const;
     [[clang::warn_unused_result]] Error getReleaseFences(
             std::unordered_map<std::shared_ptr<Layer>,
                     android::sp<android::Fence>>* outFences) const;