From 9bad0d7e726e6b264c528a3dd13d0c58fd92c0e1 Mon Sep 17 00:00:00 2001
From: Courtney Goeltzenleuchter <courtneygo@google.com>
Date: Tue, 19 Dec 2017 12:34:34 -0700
Subject: Add plumbing for HDR metadata

Allow a ANativeWindow client to send HDR metadata to SurfaceFlinger.
The metadata can be queried with
BufferLayerConsumer::getCurrentHdrMetadata.

Written by Courtney.  Updated by olv@.

Bug: 63710530
Test: builds
Change-Id: I23192d4750950664b57863a533bffd72397255b4
---
 libs/gui/HdrMetadata.cpp | 69 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 libs/gui/HdrMetadata.cpp

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

diff --git a/libs/gui/HdrMetadata.cpp b/libs/gui/HdrMetadata.cpp
new file mode 100644
index 0000000000..299bdfa381
--- /dev/null
+++ b/libs/gui/HdrMetadata.cpp
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2018 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 <gui/HdrMetadata.h>
+
+namespace android {
+
+size_t HdrMetadata::getFlattenedSize() const {
+    size_t size = sizeof(validTypes);
+    if (validTypes & SMPTE2086) {
+        size += sizeof(smpte2086);
+    }
+    if (validTypes & CTA861_3) {
+        size += sizeof(cta8613);
+    }
+    return size;
+}
+
+status_t HdrMetadata::flatten(void* buffer, size_t size) const {
+    if (size < getFlattenedSize()) {
+        return NO_MEMORY;
+    }
+
+    FlattenableUtils::write(buffer, size, validTypes);
+    if (validTypes & SMPTE2086) {
+        FlattenableUtils::write(buffer, size, smpte2086);
+    }
+    if (validTypes & CTA861_3) {
+        FlattenableUtils::write(buffer, size, cta8613);
+    }
+
+    return NO_ERROR;
+}
+
+status_t HdrMetadata::unflatten(void const* buffer, size_t size) {
+    if (size < sizeof(validTypes)) {
+        return NO_MEMORY;
+    }
+    FlattenableUtils::read(buffer, size, validTypes);
+    if (validTypes & SMPTE2086) {
+        if (size < sizeof(smpte2086)) {
+            return NO_MEMORY;
+        }
+        FlattenableUtils::read(buffer, size, smpte2086);
+    }
+    if (validTypes & CTA861_3) {
+        if (size < sizeof(cta8613)) {
+            return NO_MEMORY;
+        }
+        FlattenableUtils::read(buffer, size, cta8613);
+    }
+
+    return NO_ERROR;
+}
+
+} // namespace android
-- 
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