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
diff --git a/libs/gui/HdrMetadata.cpp b/libs/gui/HdrMetadata.cpp
new file mode 100644
index 0000000..299bdfa
--- /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