test-hwc2: add client target support

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: I94c86795b2e334df0570c6c5a3cbbcb5a8ca2826
diff --git a/services/surfaceflinger/tests/hwc2/Hwc2TestClientTarget.cpp b/services/surfaceflinger/tests/hwc2/Hwc2TestClientTarget.cpp
new file mode 100644
index 0000000..6925492
--- /dev/null
+++ b/services/surfaceflinger/tests/hwc2/Hwc2TestClientTarget.cpp
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 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 <sstream>
+
+#include <ui/Rect.h>
+
+#include "Hwc2TestClientTarget.h"
+
+int Hwc2TestClientTarget::getBuffer(const Hwc2TestLayers& testLayers,
+        const std::set<hwc2_layer_t>& clientLayers,
+        const std::set<hwc2_layer_t>& clearLayers, bool flipClientTarget,
+        const Area& displayArea, buffer_handle_t* outHandle,
+        int32_t* outAcquireFence)
+{
+    if (!flipClientTarget) {
+        bool needsClientTarget = false;
+
+        for (auto clientLayer : clientLayers) {
+            if (testLayers.getVisibleRegion(clientLayer).numRects > 0) {
+                needsClientTarget = true;
+                break;
+            }
+        }
+
+        if (!needsClientTarget) {
+           *outHandle = nullptr;
+           *outAcquireFence = -1;
+           return 0;
+        }
+    }
+
+    return mBuffer.get(outHandle, outAcquireFence, displayArea,
+            &testLayers, &clientLayers, &clearLayers);
+}
+
+
+Hwc2TestClientTargetSupport::Hwc2TestClientTargetSupport(
+        Hwc2TestCoverage coverage, const Area& displayArea)
+    : mBufferArea(coverage, displayArea),
+      mDataspace(coverage),
+      mSurfaceDamage(coverage)
+{
+    mBufferArea.setDependent(&mSurfaceDamage);
+}
+
+std::string Hwc2TestClientTargetSupport::dump() const
+{
+    std::stringstream dmp;
+
+    dmp << "client target: \n";
+
+    for (auto property : properties) {
+        dmp << property->dump();
+    }
+
+    return dmp.str();
+}
+
+void Hwc2TestClientTargetSupport::reset()
+{
+    for (auto property : properties) {
+        property->reset();
+    }
+}
+
+bool Hwc2TestClientTargetSupport::advance()
+{
+    for (auto property : properties) {
+        if (property->advance())
+            return true;
+    }
+    return false;
+}
+
+Area Hwc2TestClientTargetSupport::getBufferArea() const
+{
+    return mBufferArea.get();
+}
+
+android_dataspace_t Hwc2TestClientTargetSupport::getDataspace() const
+{
+    return mDataspace.get();
+}
+
+const hwc_region_t Hwc2TestClientTargetSupport::getSurfaceDamage() const
+{
+    return mSurfaceDamage.get();
+}