1 files changed, 72 insertions, 0 deletions
diff --git a/libs/ui/DynamicDisplayInfo.cpp b/libs/ui/DynamicDisplayInfo.cpp
new file mode 100644
index 0000000000..d5c4ef0c17
--- /dev/null
+++ b/libs/ui/DynamicDisplayInfo.cpp
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2021 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 <ui/DynamicDisplayInfo.h>
+
+#include <cstdint>
+
+#include <ui/FlattenableHelpers.h>
+
+#define RETURN_IF_ERROR(op) \
+    if (const status_t status = (op); status != OK) return status;
+
+namespace android::ui {
+
+std::optional<ui::DisplayMode> DynamicDisplayInfo::getActiveDisplayMode() const {
+    for (const auto& currMode : supportedDisplayModes) {
+        if (currMode.id == activeDisplayModeId) {
+            return currMode;
+        }
+    }
+    return {};
+}
+
+size_t DynamicDisplayInfo::getFlattenedSize() const {
+    return FlattenableHelpers::getFlattenedSize(supportedDisplayModes) +
+            FlattenableHelpers::getFlattenedSize(activeDisplayModeId) +
+            FlattenableHelpers::getFlattenedSize(supportedColorModes) +
+            FlattenableHelpers::getFlattenedSize(activeColorMode) +
+            FlattenableHelpers::getFlattenedSize(hdrCapabilities) +
+            FlattenableHelpers::getFlattenedSize(autoLowLatencyModeSupported) +
+            FlattenableHelpers::getFlattenedSize(gameContentTypeSupported);
+}
+
+status_t DynamicDisplayInfo::flatten(void* buffer, size_t size) const {
+    if (size < getFlattenedSize()) {
+        return NO_MEMORY;
+    }
+    RETURN_IF_ERROR(FlattenableHelpers::flatten(&buffer, &size, supportedDisplayModes));
+    RETURN_IF_ERROR(FlattenableHelpers::flatten(&buffer, &size, activeDisplayModeId));
+    RETURN_IF_ERROR(FlattenableHelpers::flatten(&buffer, &size, supportedColorModes));
+    RETURN_IF_ERROR(FlattenableHelpers::flatten(&buffer, &size, activeColorMode));
+    RETURN_IF_ERROR(FlattenableHelpers::flatten(&buffer, &size, hdrCapabilities));
+    RETURN_IF_ERROR(FlattenableHelpers::flatten(&buffer, &size, autoLowLatencyModeSupported));
+    RETURN_IF_ERROR(FlattenableHelpers::flatten(&buffer, &size, gameContentTypeSupported));
+    return OK;
+}
+
+status_t DynamicDisplayInfo::unflatten(const void* buffer, size_t size) {
+    RETURN_IF_ERROR(FlattenableHelpers::unflatten(&buffer, &size, &supportedDisplayModes));
+    RETURN_IF_ERROR(FlattenableHelpers::unflatten(&buffer, &size, &activeDisplayModeId));
+    RETURN_IF_ERROR(FlattenableHelpers::unflatten(&buffer, &size, &supportedColorModes));
+    RETURN_IF_ERROR(FlattenableHelpers::unflatten(&buffer, &size, &activeColorMode));
+    RETURN_IF_ERROR(FlattenableHelpers::unflatten(&buffer, &size, &hdrCapabilities));
+    RETURN_IF_ERROR(FlattenableHelpers::unflatten(&buffer, &size, &autoLowLatencyModeSupported));
+    RETURN_IF_ERROR(FlattenableHelpers::unflatten(&buffer, &size, &gameContentTypeSupported));
+    return OK;
+}
+
+} // namespace android::ui