From ef006586b5e3bbbf69177958a388cb1208adf0ff Mon Sep 17 00:00:00 2001
From: Sally Qi <sallyqi@google.com>
Date: Fri, 11 Oct 2024 13:23:09 -0700
Subject: [Lut HAL backend] implementation 3rd patch.

- interpret the lut and pass them into shader.

Bug: 329472856
Test: builds
Flag: EXEMPT no flag needed
Change-Id: I005600593f4a369130bf8bcaea69300758b5ae03
---
 libs/gui/DisplayLuts.cpp | 81 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 libs/gui/DisplayLuts.cpp

(limited to 'libs/gui/DisplayLuts.cpp')

diff --git a/libs/gui/DisplayLuts.cpp b/libs/gui/DisplayLuts.cpp
new file mode 100644
index 0000000000..80429765be
--- /dev/null
+++ b/libs/gui/DisplayLuts.cpp
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#include "include/gui/DisplayLuts.h"
+#include <gui/DisplayLuts.h>
+#include <private/gui/ParcelUtils.h>
+
+namespace android::gui {
+
+status_t DisplayLuts::Entry::readFromParcel(const android::Parcel* parcel) {
+    if (parcel == nullptr) {
+        ALOGE("%s: Null parcel", __func__);
+        return BAD_VALUE;
+    }
+
+    SAFE_PARCEL(parcel->readInt32, &dimension);
+    SAFE_PARCEL(parcel->readInt32, &size);
+    SAFE_PARCEL(parcel->readInt32, &samplingKey);
+
+    return OK;
+}
+
+status_t DisplayLuts::Entry::writeToParcel(android::Parcel* parcel) const {
+    if (parcel == nullptr) {
+        ALOGE("%s: Null parcel", __func__);
+        return BAD_VALUE;
+    }
+
+    SAFE_PARCEL(parcel->writeInt32, dimension);
+    SAFE_PARCEL(parcel->writeInt32, size);
+    SAFE_PARCEL(parcel->writeInt32, samplingKey);
+
+    return OK;
+}
+
+status_t DisplayLuts::readFromParcel(const android::Parcel* parcel) {
+    if (parcel == nullptr) {
+        ALOGE("%s: Null parcel", __func__);
+        return BAD_VALUE;
+    }
+
+    SAFE_PARCEL(parcel->readUniqueFileDescriptor, &fd);
+    SAFE_PARCEL(parcel->readInt32Vector, &offsets);
+    int32_t numLutProperties;
+    SAFE_PARCEL(parcel->readInt32, &numLutProperties);
+    lutProperties.reserve(numLutProperties);
+    for (int32_t i = 0; i < numLutProperties; i++) {
+        lutProperties.push_back({});
+        SAFE_PARCEL(lutProperties.back().readFromParcel, parcel);
+    }
+    return OK;
+}
+
+status_t DisplayLuts::writeToParcel(android::Parcel* parcel) const {
+    if (parcel == nullptr) {
+        ALOGE("%s: Null parcel", __func__);
+        return BAD_VALUE;
+    }
+
+    SAFE_PARCEL(parcel->writeUniqueFileDescriptor, fd);
+    SAFE_PARCEL(parcel->writeInt32Vector, offsets);
+    SAFE_PARCEL(parcel->writeInt32, static_cast<int32_t>(lutProperties.size()));
+    for (auto& entry : lutProperties) {
+        SAFE_PARCEL(entry.writeToParcel, parcel);
+    }
+    return OK;
+}
+} // namespace android::gui
\ No newline at end of file
-- 
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