include/android_stub/android/hdr_metadata.h

   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