/*
  * HEVC Supplementary Enhancement Information messages
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifndef AVCODEC_HEVC_SEI_H
 #define AVCODEC_HEVC_SEI_H
 
 #include <stdint.h>
 
 #include "get_bits.h"
 
 /**
  * SEI message types
  */
 typedef enum {
     HEVC_SEI_TYPE_BUFFERING_PERIOD                     = 0,
     HEVC_SEI_TYPE_PICTURE_TIMING                       = 1,
     HEVC_SEI_TYPE_PAN_SCAN_RECT                        = 2,
     HEVC_SEI_TYPE_FILLER_PAYLOAD                       = 3,
     HEVC_SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35       = 4,
     HEVC_SEI_TYPE_USER_DATA_UNREGISTERED               = 5,
     HEVC_SEI_TYPE_RECOVERY_POINT                       = 6,
     HEVC_SEI_TYPE_SCENE_INFO                           = 9,
     HEVC_SEI_TYPE_FULL_FRAME_SNAPSHOT                  = 15,
     HEVC_SEI_TYPE_PROGRESSIVE_REFINEMENT_SEGMENT_START = 16,
     HEVC_SEI_TYPE_PROGRESSIVE_REFINEMENT_SEGMENT_END   = 17,
     HEVC_SEI_TYPE_FILM_GRAIN_CHARACTERISTICS           = 19,
     HEVC_SEI_TYPE_POST_FILTER_HINT                     = 22,
     HEVC_SEI_TYPE_TONE_MAPPING_INFO                    = 23,
     HEVC_SEI_TYPE_FRAME_PACKING                        = 45,
     HEVC_SEI_TYPE_DISPLAY_ORIENTATION                  = 47,
     HEVC_SEI_TYPE_SOP_DESCRIPTION                      = 128,
     HEVC_SEI_TYPE_ACTIVE_PARAMETER_SETS                = 129,
     HEVC_SEI_TYPE_DECODING_UNIT_INFO                   = 130,
     HEVC_SEI_TYPE_TEMPORAL_LEVEL0_INDEX                = 131,
     HEVC_SEI_TYPE_DECODED_PICTURE_HASH                 = 132,
     HEVC_SEI_TYPE_SCALABLE_NESTING                     = 133,
     HEVC_SEI_TYPE_REGION_REFRESH_INFO                  = 134,
     HEVC_SEI_TYPE_MASTERING_DISPLAY_INFO               = 137,
     HEVC_SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO             = 144,

     HEVC_SEI_TYPE_ALTERNATIVE_TRANSFER_CHARACTERISTICS = 147,

 } HEVC_SEI_Type;
 
 typedef struct HEVCSEIPictureHash {
     uint8_t       md5[3][16];
     uint8_t is_md5;
 } HEVCSEIPictureHash;
 
 typedef struct HEVCSEIFramePacking {
     int present;
     int arrangement_type;
     int content_interpretation_type;
     int quincunx_subsampling;

     int current_frame_is_frame0_flag;

 } HEVCSEIFramePacking;
 
 typedef struct HEVCSEIDisplayOrientation {
     int present;
     int anticlockwise_rotation;
     int hflip, vflip;
 } HEVCSEIDisplayOrientation;
 
 typedef struct HEVCSEIPictureTiming {
     int picture_struct;
 } HEVCSEIPictureTiming;
 
 typedef struct HEVCSEIA53Caption {
     int a53_caption_size;
     uint8_t *a53_caption;
 } HEVCSEIA53Caption;
 
 typedef struct HEVCSEIMasteringDisplay {
     int present;
     uint16_t display_primaries[3][2];
     uint16_t white_point[2];
     uint32_t max_luminance;
     uint32_t min_luminance;
 } HEVCSEIMasteringDisplay;
 
 typedef struct HEVCSEIContentLight {
     int present;
     uint16_t max_content_light_level;
     uint16_t max_pic_average_light_level;
 } HEVCSEIContentLight;
 

 typedef struct HEVCSEIAlternativeTransfer {
     int present;
     int preferred_transfer_characteristics;
 } HEVCSEIAlternativeTransfer;
 

 typedef struct HEVCSEI {

     HEVCSEIPictureHash picture_hash;
     HEVCSEIFramePacking frame_packing;
     HEVCSEIDisplayOrientation display_orientation;
     HEVCSEIPictureTiming picture_timing;
     HEVCSEIA53Caption a53_caption;
     HEVCSEIMasteringDisplay mastering_display;
     HEVCSEIContentLight content_light;
     int active_seq_parameter_set_id;

     HEVCSEIAlternativeTransfer alternative_transfer;

 } HEVCSEI;

 
 struct HEVCParamSets;
 

 int ff_hevc_decode_nal_sei(GetBitContext *gb, void *logctx, HEVCSEI *s,

                            const struct HEVCParamSets *ps, int type);
 
 /**
  * Reset SEI values that are stored on the Context.
  * e.g. Caption data that was extracted during NAL
  * parsing.
  *
  * @param s HEVCContext.
  */

 void ff_hevc_reset_sei(HEVCSEI *s);

 
 #endif /* AVCODEC_HEVC_SEI_H */