/*
 * 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 <libavutil/buffer.h>

#include "cbs/sei.h"

#include "get_bits.h"


typedef enum {
  HEVC_SEI_PIC_STRUCT_FRAME_DOUBLING = 7,
  HEVC_SEI_PIC_STRUCT_FRAME_TRIPLING = 8
} HEVC_SEI_PicStructType;

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 {
  AVBufferRef *buf_ref;
} HEVCSEIA53Caption;

typedef struct HEVCSEIUnregistered {
  AVBufferRef **buf_ref;
  int nb_buf_ref;
} HEVCSEIUnregistered;

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 HEVCSEIDynamicHDRPlus {
  AVBufferRef *info;
} HEVCSEIDynamicHDRPlus;

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 HEVCSEITimeCode {
  int present;
  uint8_t num_clock_ts;
  uint8_t clock_timestamp_flag[3];
  uint8_t units_field_based_flag[3];
  uint8_t counting_type[3];
  uint8_t full_timestamp_flag[3];
  uint8_t discontinuity_flag[3];
  uint8_t cnt_dropped_flag[3];
  uint16_t n_frames[3];
  uint8_t seconds_value[3];
  uint8_t minutes_value[3];
  uint8_t hours_value[3];
  uint8_t seconds_flag[3];
  uint8_t minutes_flag[3];
  uint8_t hours_flag[3];
  uint8_t time_offset_length[3];
  int32_t time_offset_value[3];
} HEVCSEITimeCode;

typedef struct HEVCSEI {
  HEVCSEIPictureHash picture_hash;
  HEVCSEIFramePacking frame_packing;
  HEVCSEIDisplayOrientation display_orientation;
  HEVCSEIPictureTiming picture_timing;
  HEVCSEIA53Caption a53_caption;
  HEVCSEIUnregistered unregistered;
  HEVCSEIMasteringDisplay mastering_display;
  HEVCSEIDynamicHDRPlus dynamic_hdr_plus;
  HEVCSEIContentLight content_light;
  int active_seq_parameter_set_id;
  HEVCSEIAlternativeTransfer alternative_transfer;
  HEVCSEITimeCode timecode;
} 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 */