1 files changed, 70 insertions, 0 deletions
diff --git a/libs/gui/DisplayInfo.cpp b/libs/gui/DisplayInfo.cpp
new file mode 100644
index 0000000000..52d9540eeb
--- /dev/null
+++ b/libs/gui/DisplayInfo.cpp
@@ -0,0 +1,70 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "DisplayInfo"
+
+#include <binder/Parcel.h>
+#include <gui/DisplayInfo.h>
+#include <private/gui/ParcelUtils.h>
+
+#include <log/log.h>
+
+namespace android::gui {
+
+// --- DisplayInfo ---
+
+status_t DisplayInfo::readFromParcel(const android::Parcel* parcel) {
+    if (parcel == nullptr) {
+        ALOGE("%s: Null parcel", __func__);
+        return BAD_VALUE;
+    }
+
+    float dsdx, dtdx, tx, dtdy, dsdy, ty;
+    SAFE_PARCEL(parcel->readInt32, &displayId);
+    SAFE_PARCEL(parcel->readInt32, &logicalWidth);
+    SAFE_PARCEL(parcel->readInt32, &logicalHeight);
+    SAFE_PARCEL(parcel->readFloat, &dsdx);
+    SAFE_PARCEL(parcel->readFloat, &dtdx);
+    SAFE_PARCEL(parcel->readFloat, &tx);
+    SAFE_PARCEL(parcel->readFloat, &dtdy);
+    SAFE_PARCEL(parcel->readFloat, &dsdy);
+    SAFE_PARCEL(parcel->readFloat, &ty);
+
+    transform.set({dsdx, dtdx, tx, dtdy, dsdy, ty, 0, 0, 1});
+
+    return OK;
+}
+
+status_t DisplayInfo::writeToParcel(android::Parcel* parcel) const {
+    if (parcel == nullptr) {
+        ALOGE("%s: Null parcel", __func__);
+        return BAD_VALUE;
+    }
+
+    SAFE_PARCEL(parcel->writeInt32, displayId);
+    SAFE_PARCEL(parcel->writeInt32, logicalWidth);
+    SAFE_PARCEL(parcel->writeInt32, logicalHeight);
+    SAFE_PARCEL(parcel->writeFloat, transform.dsdx());
+    SAFE_PARCEL(parcel->writeFloat, transform.dtdx());
+    SAFE_PARCEL(parcel->writeFloat, transform.tx());
+    SAFE_PARCEL(parcel->writeFloat, transform.dtdy());
+    SAFE_PARCEL(parcel->writeFloat, transform.dsdy());
+    SAFE_PARCEL(parcel->writeFloat, transform.ty());
+
+    return OK;
+}
+
+} // namespace android::gui