SF: Separate out render surface code
This creates a new class for the purpose of holding all the
functionality related to flipping the output display surface.
Test: atest libsurfaceflinger_unittest libcompositionengine_test
Bug: 121291683
Change-Id: I108ccb75f3cd6aa1204487b0aed7c67d9fe1b85f
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/RenderSurfaceCreationArgs.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/RenderSurfaceCreationArgs.h
new file mode 100644
index 0000000..a1230b3
--- /dev/null
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/RenderSurfaceCreationArgs.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2019 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.
+ */
+
+#pragma once
+
+#include <cstdint>
+#include <memory>
+
+#include <compositionengine/DisplaySurface.h>
+#include <utils/StrongPointer.h>
+
+struct ANativeWindow;
+
+namespace android {
+
+namespace compositionengine {
+
+class Display;
+
+/**
+ * A parameter object for creating RenderSurface instances
+ */
+struct RenderSurfaceCreationArgs {
+ // The initial width of the surface
+ int32_t displayWidth;
+
+ // The initial height of the surface
+ int32_t displayHeight;
+
+ // The ANativeWindow for the buffer queue for this surface
+ sp<ANativeWindow> nativeWindow;
+
+ // The DisplaySurface for this surface
+ sp<DisplaySurface> displaySurface;
+};
+
+/**
+ * A helper for setting up a RenderSurfaceCreationArgs value in-line.
+ * Prefer this builder over raw structure initialization.
+ *
+ * Instead of:
+ *
+ * RenderSurfaceCreationArgs{1000, 1000, nativeWindow, displaySurface}
+ *
+ * Prefer:
+ *
+ * RenderSurfaceCreationArgsBuilder().setDisplayWidth(1000).setDisplayHeight(1000)
+ * .setNativeWindow(nativeWindow).setDisplaySurface(displaySurface).Build();
+ */
+class RenderSurfaceCreationArgsBuilder {
+public:
+ RenderSurfaceCreationArgs build() { return std::move(mArgs); }
+
+ RenderSurfaceCreationArgsBuilder& setDisplayWidth(int32_t displayWidth) {
+ mArgs.displayWidth = displayWidth;
+ return *this;
+ }
+ RenderSurfaceCreationArgsBuilder& setDisplayHeight(int32_t displayHeight) {
+ mArgs.displayHeight = displayHeight;
+ return *this;
+ }
+ RenderSurfaceCreationArgsBuilder& setNativeWindow(sp<ANativeWindow> nativeWindow) {
+ mArgs.nativeWindow = nativeWindow;
+ return *this;
+ }
+ RenderSurfaceCreationArgsBuilder& setDisplaySurface(sp<DisplaySurface> displaySurface) {
+ mArgs.displaySurface = displaySurface;
+ return *this;
+ }
+
+private:
+ RenderSurfaceCreationArgs mArgs;
+};
+
+} // namespace compositionengine
+} // namespace android