test-hwc2: set layer blend mode

Test: Add "#define HAVE_NO_SURFACE_FLINGER" to
          frameworks/native/libs/gui/BufferQueueCore.cpp.
      Recompile and flash.
      Run "mm" in frameworks/native/services/surfaceflinger/tests/hwc2.
      Push test-hwc2 to device.
      Run "adb root && adb shell stop".
      Run test case. Ex: "./test-hwc2"

Change-Id: Id5a7a568fb81ac9aff388d04077a12765cc135a3
diff --git a/services/surfaceflinger/tests/hwc2/Hwc2Test.cpp b/services/surfaceflinger/tests/hwc2/Hwc2Test.cpp
index a50af49..c24e6d7 100644
--- a/services/surfaceflinger/tests/hwc2/Hwc2Test.cpp
+++ b/services/surfaceflinger/tests/hwc2/Hwc2Test.cpp
@@ -357,6 +357,23 @@
         }
     }
 
+    void setLayerBlendMode(hwc2_display_t display, hwc2_layer_t layer,
+            hwc2_blend_mode_t mode, hwc2_error_t* outErr = nullptr)
+    {
+        auto pfn = reinterpret_cast<HWC2_PFN_SET_LAYER_BLEND_MODE>(
+                getFunction(HWC2_FUNCTION_SET_LAYER_BLEND_MODE));
+        ASSERT_TRUE(pfn) << "failed to get function";
+
+        auto err = static_cast<hwc2_error_t>(pfn(mHwc2Device, display, layer,
+                mode));
+        if (outErr) {
+            *outErr = err;
+        } else {
+            ASSERT_EQ(err, HWC2_ERROR_NONE) << "failed to set layer blend mode "
+                    << getBlendModeName(mode);
+        }
+    }
+
 protected:
     hwc2_function_pointer_t getFunction(hwc2_function_descriptor_t descriptor)
     {
@@ -683,6 +700,13 @@
                 timestamp);
 }
 
+void setBlendMode(Hwc2Test* test, hwc2_display_t display, hwc2_layer_t layer,
+        const Hwc2TestLayer& testLayer, hwc2_error_t* outErr)
+{
+    EXPECT_NO_FATAL_FAILURE(test->setLayerBlendMode(display, layer,
+            testLayer.getBlendMode(), outErr));
+}
+
 void setComposition(Hwc2Test* test, hwc2_display_t display, hwc2_layer_t layer,
         const Hwc2TestLayer& testLayer, hwc2_error_t* outErr)
 {
@@ -704,6 +728,11 @@
     }
 }
 
+bool advanceBlendMode(Hwc2TestLayer* testLayer)
+{
+    return testLayer->advanceBlendMode();
+}
+
 bool advanceComposition(Hwc2TestLayer* testLayer)
 {
     return testLayer->advanceComposition();
@@ -1556,3 +1585,37 @@
             }
     ));
 }
+
+/* TESTCASE: Tests that the HWC2 can set a blend mode value of a layer. */
+TEST_F(Hwc2Test, SET_LAYER_BLEND_MODE)
+{
+    ASSERT_NO_FATAL_FAILURE(setLayerProperty(Hwc2TestCoverage::Complete,
+            setBlendMode, advanceBlendMode));
+}
+
+/* TESTCASE: Tests that the HWC2 can update a blend mode value of a layer. */
+TEST_F(Hwc2Test, SET_LAYER_BLEND_MODE_update)
+{
+    ASSERT_NO_FATAL_FAILURE(setLayerPropertyUpdate(Hwc2TestCoverage::Complete,
+            setBlendMode, advanceBlendMode));
+}
+
+/* TESTCASE: Tests that the HWC2 cannot set a blend mode for a bad layer. */
+TEST_F(Hwc2Test, SET_LAYER_BLEND_MODE_bad_layer)
+{
+    ASSERT_NO_FATAL_FAILURE(setLayerPropertyBadLayer(Hwc2TestCoverage::Default,
+            setBlendMode));
+}
+
+/* TESTCASE: Tests that the HWC2 cannot set an invalid blend mode. */
+TEST_F(Hwc2Test, SET_LAYER_BLEND_MODE_bad_parameter)
+{
+    ASSERT_NO_FATAL_FAILURE(setLayerPropertyBadParameter(
+            [] (Hwc2Test* test, hwc2_display_t display, hwc2_layer_t layer,
+                    hwc2_error_t* outErr) {
+
+                ASSERT_NO_FATAL_FAILURE(test->setLayerBlendMode(display,
+                        layer, HWC2_BLEND_MODE_INVALID, outErr));
+            }
+    ));
+}
diff --git a/services/surfaceflinger/tests/hwc2/Hwc2TestLayer.cpp b/services/surfaceflinger/tests/hwc2/Hwc2TestLayer.cpp
index 09fb921..2ea61b8 100644
--- a/services/surfaceflinger/tests/hwc2/Hwc2TestLayer.cpp
+++ b/services/surfaceflinger/tests/hwc2/Hwc2TestLayer.cpp
@@ -19,21 +19,32 @@
 #include "Hwc2TestLayer.h"
 
 Hwc2TestLayer::Hwc2TestLayer(Hwc2TestCoverage coverage)
-    : mComposition(coverage) { }
+    : mBlendMode(coverage),
+      mComposition(coverage) { }
 
 std::string Hwc2TestLayer::dump() const
 {
     std::stringstream dmp;
 
     dmp << "layer: \n";
-    dmp << mComposition.dump();
+
+    for (auto property : mProperties) {
+        dmp << property->dump();
+    }
 
     return dmp.str();
 }
 
 void Hwc2TestLayer::reset()
 {
-    mComposition.reset();
+    for (auto property : mProperties) {
+        property->reset();
+    }
+}
+
+hwc2_blend_mode_t Hwc2TestLayer::getBlendMode() const
+{
+    return mBlendMode.get();
 }
 
 hwc2_composition_t Hwc2TestLayer::getComposition() const
@@ -41,6 +52,11 @@
     return mComposition.get();
 }
 
+bool Hwc2TestLayer::advanceBlendMode()
+{
+    return mBlendMode.advance();
+}
+
 bool Hwc2TestLayer::advanceComposition()
 {
     return mComposition.advance();
diff --git a/services/surfaceflinger/tests/hwc2/Hwc2TestLayer.h b/services/surfaceflinger/tests/hwc2/Hwc2TestLayer.h
index 9734ab8..a4d6d1d 100644
--- a/services/surfaceflinger/tests/hwc2/Hwc2TestLayer.h
+++ b/services/surfaceflinger/tests/hwc2/Hwc2TestLayer.h
@@ -33,11 +33,18 @@
 
     void reset();
 
+    hwc2_blend_mode_t  getBlendMode() const;
     hwc2_composition_t getComposition() const;
 
+    bool advanceBlendMode();
     bool advanceComposition();
 
 private:
+    std::array<Hwc2TestContainer*, 2> mProperties = {{
+        &mBlendMode, &mComposition
+    }};
+
+    Hwc2TestBlendMode mBlendMode;
     Hwc2TestComposition mComposition;
 };
 
diff --git a/services/surfaceflinger/tests/hwc2/Hwc2TestProperties.cpp b/services/surfaceflinger/tests/hwc2/Hwc2TestProperties.cpp
index ef399fd..ee0e8d4 100644
--- a/services/surfaceflinger/tests/hwc2/Hwc2TestProperties.cpp
+++ b/services/surfaceflinger/tests/hwc2/Hwc2TestProperties.cpp
@@ -18,10 +18,35 @@
 
 #include "Hwc2TestProperties.h"
 
+Hwc2TestBlendMode::Hwc2TestBlendMode(Hwc2TestCoverage coverage)
+    : Hwc2TestProperty(coverage, mCompleteBlendModes, mBasicBlendModes,
+            mDefaultBlendModes) { }
+
+std::string Hwc2TestBlendMode::dump() const
+{
+    std::stringstream dmp;
+    dmp << "\tblend mode: " << getBlendModeName(get()) << "\n";
+    return dmp.str();
+}
+
+const std::vector<hwc2_blend_mode_t> Hwc2TestBlendMode::mDefaultBlendModes = {
+    HWC2_BLEND_MODE_NONE,
+};
+
+const std::vector<hwc2_blend_mode_t> Hwc2TestBlendMode::mBasicBlendModes = {
+    HWC2_BLEND_MODE_NONE,
+    HWC2_BLEND_MODE_PREMULTIPLIED,
+};
+
+const std::vector<hwc2_blend_mode_t> Hwc2TestBlendMode::mCompleteBlendModes = {
+    HWC2_BLEND_MODE_NONE,
+    HWC2_BLEND_MODE_PREMULTIPLIED,
+    HWC2_BLEND_MODE_COVERAGE,
+};
+
+
 Hwc2TestComposition::Hwc2TestComposition(Hwc2TestCoverage coverage)
-    : Hwc2TestProperty(
-            (coverage == Hwc2TestCoverage::Complete)? mCompleteCompositions:
-            (coverage == Hwc2TestCoverage::Basic)? mBasicCompositions:
+    : Hwc2TestProperty(coverage, mCompleteCompositions, mBasicCompositions,
             mDefaultCompositions) { }
 
 std::string Hwc2TestComposition::dump() const
diff --git a/services/surfaceflinger/tests/hwc2/Hwc2TestProperties.h b/services/surfaceflinger/tests/hwc2/Hwc2TestProperties.h
index 74f571e..3375d86 100644
--- a/services/surfaceflinger/tests/hwc2/Hwc2TestProperties.h
+++ b/services/surfaceflinger/tests/hwc2/Hwc2TestProperties.h
@@ -17,6 +17,7 @@
 #ifndef _HWC2_TEST_PROPERTIES_H
 #define _HWC2_TEST_PROPERTIES_H
 
+#include <array>
 #include <vector>
 
 #define HWC2_INCLUDE_STRINGIFICATION
@@ -32,20 +33,39 @@
 };
 
 
-template <class T>
-class Hwc2TestProperty {
+class Hwc2TestContainer {
 public:
+    virtual ~Hwc2TestContainer() = default;
+
+    /* Resets the container */
+    virtual void reset() = 0;
+
+    /* Attempts to advance to the next valid value. Returns true if one can be
+     * found */
+    virtual bool advance() = 0;
+
+    virtual std::string dump() const = 0;
+};
+
+
+template <class T>
+class Hwc2TestProperty : public Hwc2TestContainer {
+public:
+    Hwc2TestProperty(Hwc2TestCoverage coverage,
+            const std::vector<T>& completeList, const std::vector<T>& basicList,
+            const std::vector<T>& defaultList)
+        : Hwc2TestProperty((coverage == Hwc2TestCoverage::Complete)? completeList:
+                (coverage == Hwc2TestCoverage::Basic)? basicList : defaultList) { }
+
     Hwc2TestProperty(const std::vector<T>& list)
         : mList(list) { }
 
-    virtual ~Hwc2TestProperty() { };
-
-    virtual void reset()
+    void reset() override
     {
         mListIdx = 0;
     }
 
-    virtual bool advance()
+    bool advance() override
     {
         if (mListIdx + 1 < mList.size()) {
             mListIdx++;
@@ -55,19 +75,30 @@
         return false;
     }
 
-    virtual T get() const
+    T get() const
     {
         return mList.at(mListIdx);
     }
 
-    virtual std::string dump() const = 0;
-
 protected:
     const std::vector<T>& mList;
     size_t mListIdx = 0;
 };
 
 
+class Hwc2TestBlendMode : public Hwc2TestProperty<hwc2_blend_mode_t> {
+public:
+    Hwc2TestBlendMode(Hwc2TestCoverage coverage);
+
+    std::string dump() const override;
+
+protected:
+    static const std::vector<hwc2_blend_mode_t> mDefaultBlendModes;
+    static const std::vector<hwc2_blend_mode_t> mBasicBlendModes;
+    static const std::vector<hwc2_blend_mode_t> mCompleteBlendModes;
+};
+
+
 class Hwc2TestComposition : public Hwc2TestProperty<hwc2_composition_t> {
 public:
     Hwc2TestComposition(Hwc2TestCoverage coverage);