1/*
2 * Copyright 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17/**
18 * @file hdr_metadata.h
19 */
20
21#ifndef ANDROID_HDR_METADATA_H
22#define ANDROID_HDR_METADATA_H
23
24#include <inttypes.h>
25
26#include <sys/cdefs.h>
27
28__BEGIN_DECLS
29
30/**
31 * These structures are used to define the display's capabilities for HDR content.
32 * They can be used to better tone map content to user's display.
33 */
34
35/**
36 * HDR metadata standards that are supported by Android.
37 */
38enum AHdrMetadataType : uint32_t {
39    HDR10_SMPTE2086 = 1,
40    HDR10_CTA861_3 = 2,
41    HDR10PLUS_SEI = 3,
42};
43
44/**
45 * Color is defined in CIE XYZ coordinates.
46 */
47struct AColor_xy {
48    float x;
49    float y;
50};
51
52/**
53 * SMPTE ST 2086 "Mastering Display Color Volume" static metadata
54 */
55struct AHdrMetadata_smpte2086 {
56    struct AColor_xy displayPrimaryRed;
57    struct AColor_xy displayPrimaryGreen;
58    struct AColor_xy displayPrimaryBlue;
59    struct AColor_xy whitePoint;
60    float maxLuminance;
61    float minLuminance;
62};
63
64/**
65 * CTA 861.3 "HDR Static Metadata Extension" static metadata
66 */
67struct AHdrMetadata_cta861_3 {
68    float maxContentLightLevel;
69    float maxFrameAverageLightLevel;
70};
71
72__END_DECLS
73
74#endif // ANDROID_HDR_METADATA_H
75