--- /dev/null
+/*
+ * Copyright 2019 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.
+ */
+
+/**
+ * @file hdr_metadata.h
+ */
+
+#ifndef ANDROID_HDR_METADATA_H
+#define ANDROID_HDR_METADATA_H
+
+#include <inttypes.h>
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+/**
+ * These structures are used to define the display's capabilities for HDR content.
+ * They can be used to better tone map content to user's display.
+ */
+
+/**
+ * HDR metadata standards that are supported by Android.
+ */
+enum AHdrMetadataType : uint32_t {
+ HDR10_SMPTE2086 = 1,
+ HDR10_CTA861_3 = 2,
+ HDR10PLUS_SEI = 3,
+};
+
+/**
+ * Color is defined in CIE XYZ coordinates.
+ */
+struct AColor_xy {
+ float x;
+ float y;
+};
+
+/**
+ * SMPTE ST 2086 "Mastering Display Color Volume" static metadata
+ */
+struct AHdrMetadata_smpte2086 {
+ struct AColor_xy displayPrimaryRed;
+ struct AColor_xy displayPrimaryGreen;
+ struct AColor_xy displayPrimaryBlue;
+ struct AColor_xy whitePoint;
+ float maxLuminance;
+ float minLuminance;
+};
+
+/**
+ * CTA 861.3 "HDR Static Metadata Extension" static metadata
+ */
+struct AHdrMetadata_cta861_3 {
+ float maxContentLightLevel;
+ float maxFrameAverageLightLevel;
+};
+
+__END_DECLS
+
+#endif // ANDROID_HDR_METADATA_H