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 */ 38 enum 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 */ 47 struct AColor_xy { 48 float x; 49 float y; 50 }; 51 52 /** 53 * SMPTE ST 2086 "Mastering Display Color Volume" static metadata 54 */ 55 struct 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 */ 67 struct AHdrMetadata_cta861_3 { 68 float maxContentLightLevel; 69 float maxFrameAverageLightLevel; 70 }; 71 72 __END_DECLS 73 74 #endif // ANDROID_HDR_METADATA_H 75
