SF: Store and manage snapshots for virtual displays
Create/destroy VirtualDisplaySnapshot that tracks the virtual display's
lifetime.
For now, VirtualDisplaySnapshots will track a virtual display's
DisplayId and whether or not it's backed by Hal/Gpu. This will be
helpful when moving the cast system of DisplayIds from within
DisplayId.h to SurfaceFlinger.
Bug: 374163881
Flag: EXEMPT refactor
Test: libsurfaceflinger_unittest
Change-Id: Id730e65b24ecd10925282bd72585ac7c5635a4fe
diff --git a/services/surfaceflinger/Display/VirtualDisplaySnapshot.h b/services/surfaceflinger/Display/VirtualDisplaySnapshot.h
new file mode 100644
index 0000000..c68020c
--- /dev/null
+++ b/services/surfaceflinger/Display/VirtualDisplaySnapshot.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2024 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 <optional>
+#include <string>
+
+#include <ui/DisplayId.h>
+
+#include "Utils/Dumper.h"
+
+namespace android::display {
+
+// Immutable state of a virtual display, captured on creation.
+class VirtualDisplaySnapshot {
+public:
+ VirtualDisplaySnapshot(GpuVirtualDisplayId gpuId, std::string uniqueId)
+ : mIsGpu(true), mUniqueId(std::move(uniqueId)), mVirtualId(gpuId) {}
+ VirtualDisplaySnapshot(HalVirtualDisplayId halId, std::string uniqueId)
+ : mIsGpu(false), mUniqueId(std::move(uniqueId)), mVirtualId(halId) {}
+
+ VirtualDisplayId displayId() const { return mVirtualId; }
+ bool isGpu() const { return mIsGpu; }
+
+ void dump(utils::Dumper& dumper) const {
+ using namespace std::string_view_literals;
+
+ dumper.dump("isGpu"sv, mIsGpu ? "true"sv : "false"sv);
+ dumper.dump("uniqueId"sv, mUniqueId);
+ }
+
+private:
+ const bool mIsGpu;
+ const std::string mUniqueId;
+ const VirtualDisplayId mVirtualId;
+};
+
+} // namespace android::display