SF: Introduce DisplaySnapshot
DisplaySnapshot stores the immutable state of a physical display,
captured on hotplug. The SurfaceFlinger class stores a map from
PhysicalDisplayId to PhysicalDisplay, a new class that augments
this state with the sp<DisplayToken>.
Later, DisplayDevice will be removed, and SF::mDisplays will map
wp<DisplayToken> to compositionengine::Display.
Bug: 241285876
Test: libsurfaceflinger_unittest
Test: dumpsys SurfaceFlinger --displays
Change-Id: I172df87c4a7a9cf64659ff9cfbd6df195ee4bc8d
diff --git a/services/surfaceflinger/Display/DisplaySnapshot.cpp b/services/surfaceflinger/Display/DisplaySnapshot.cpp
new file mode 100644
index 0000000..b4f104a
--- /dev/null
+++ b/services/surfaceflinger/Display/DisplaySnapshot.cpp
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2022 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 <functional>
+#include <utility>
+
+#include <ftl/algorithm.h>
+#include <ftl/enum.h>
+
+#include "DisplaySnapshot.h"
+
+namespace android::display {
+
+DisplaySnapshot::DisplaySnapshot(PhysicalDisplayId displayId,
+ ui::DisplayConnectionType connectionType,
+ DisplayModes&& displayModes,
+ std::optional<DeviceProductInfo>&& deviceProductInfo)
+ : mDisplayId(displayId),
+ mConnectionType(connectionType),
+ mDisplayModes(std::move(displayModes)),
+ mDeviceProductInfo(std::move(deviceProductInfo)) {}
+
+std::optional<DisplayModeId> DisplaySnapshot::translateModeId(hal::HWConfigId hwcId) const {
+ return ftl::find_if(mDisplayModes,
+ [hwcId](const DisplayModes::value_type& pair) {
+ return pair.second->getHwcId() == hwcId;
+ })
+ .transform(&ftl::to_key<DisplayModes>);
+}
+
+void DisplaySnapshot::dump(std::string& out) const {
+ using namespace std::string_literals;
+
+ out += " connectionType="s;
+ out += ftl::enum_string(mConnectionType);
+
+ out += "\n deviceProductInfo="s;
+ if (mDeviceProductInfo) {
+ mDeviceProductInfo->dump(out);
+ } else {
+ out += "{}"s;
+ }
+}
+
+} // namespace android::display