path: root/include/gst/codecparsers/gsth265parser.h

/* Gstreamer H.265 bitstream parser
 * Copyright (C) 2013 Intel Corporation
 * Copyright (C) 2013 Sreerenj Balachandran <sreerenj.balachandran@intel.com>
 *
 *  Contact: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifndef __GST_H265_PARSER_H__
#define __GST_H265_PARSER_H__

#ifndef GST_USE_UNSTABLE_API
#warning "The H.265 parsing library is unstable API and may change in future."
#warning "You can define GST_USE_UNSTABLE_API to avoid this warning."
#endif

#include <gst/gst.h>
#include <gst/codecparsers/codecparsers-prelude.h>

G_BEGIN_DECLS

#define GST_H265_MAX_SUB_LAYERS   8
#define GST_H265_MAX_VPS_COUNT   16
#define GST_H265_MAX_SPS_COUNT   16
#define GST_H265_MAX_PPS_COUNT   64

#define GST_H265_IS_B_SLICE(slice)  ((slice)->type == GST_H265_B_SLICE)
#define GST_H265_IS_P_SLICE(slice)  ((slice)->type == GST_H265_P_SLICE)
#define GST_H265_IS_I_SLICE(slice)  ((slice)->type == GST_H265_I_SLICE)

/**
 * GST_H265_IS_NAL_TYPE_IDR:
 * @nal_type: a #GstH265NalUnitType
 *
 * Check whether @nal_type is IDR or not
 *
 * Since: 1.18
 */
#define GST_H265_IS_NAL_TYPE_IDR(nal_type) \
  ((nal_type) == GST_H265_NAL_SLICE_IDR_W_RADL || (nal_type) == GST_H265_NAL_SLICE_IDR_N_LP)

/**
 * GST_H265_IS_NAL_TYPE_IRAP:
 * @nal_type: a #GstH265NalUnitType
 *
 * Check whether @nal_type is IRAP or not
 *
 * Since: 1.18
 */
#define GST_H265_IS_NAL_TYPE_IRAP(nal_type) \
  ((nal_type) >= GST_H265_NAL_SLICE_BLA_W_LP && (nal_type) <= RESERVED_IRAP_NAL_TYPE_MAX)

/**
 * GST_H265_IS_NAL_TYPE_BLA:
 * @nal_type: a #GstH265NalUnitType
 *
 * Check whether @nal_type is BLA or not
 *
 * Since: 1.18
 */
#define GST_H265_IS_NAL_TYPE_BLA(nal_type) \
  ((nal_type) >= GST_H265_NAL_SLICE_BLA_W_LP && (nal_type) <= GST_H265_NAL_SLICE_BLA_N_LP)

/**
 * GST_H265_IS_NAL_TYPE_CRA:
 * @nal_type: a #GstH265NalUnitType
 *
 * Check whether @nal_type is CRA or not
 *
 * Since: 1.18
 */
#define GST_H265_IS_NAL_TYPE_CRA(nal_type) \
  ((nal_type) == GST_H265_NAL_SLICE_CRA_NUT)

/**
 * GST_H265_IS_NAL_TYPE_RADL:
 * @nal_type: a #GstH265NalUnitType
 *
 * Check whether @nal_type is RADL or not
 *
 * Since: 1.18
 */
#define GST_H265_IS_NAL_TYPE_RADL(nal_type) \
  ((nal_type) == GST_H265_NAL_SLICE_RADL_N || (nal_type) == GST_H265_NAL_SLICE_RADL_R)

/**
 * GST_H265_IS_NAL_TYPE_RASL:
 * @nal_type: a #GstH265NalUnitType
 *
 * Check whether @nal_type is RASL or not
 *
 * Since: 1.18
 */
#define GST_H265_IS_NAL_TYPE_RASL(nal_type) \
  ((nal_type) == GST_H265_NAL_SLICE_RASL_N || (nal_type) == GST_H265_NAL_SLICE_RASL_R)

/**
 * GstH265Profile:
 * @GST_H265_PROFILE_MAIN: Main profile (A.3.2)
 * @GST_H265_PROFILE_MAIN_10: Main 10 profile (A.3.3)
 * @GST_H265_PROFILE_MAIN_STILL_PICTURE: Main Still Picture profile (A.3.4)
 * @GST_H265_PROFILE_MONOCHROME: Monochrome profile (A.3.4)
 * @GST_H265_PROFILE_MONOCHROME_12: Monochrome 12-bits profile (A.3.4)
 * @GST_H265_PROFILE_MONOCHROME_16: Monochrome 16-bits profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_12: Main profile 12-bits (A.3.4)
 * @GST_H265_PROFILE_MAIN_422_10: Main 4:2:2 profile 10-bits (A.3.4)
 * @GST_H265_PROFILE_MAIN_422_12: Main 4:2:2 profile 12-bits (A.3.4)
 * @GST_H265_PROFILE_MAIN_444: Main 4:4:4 profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_444_10: Main 4:4:4 10-bits profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_444_12: Main 4:4:4 12-bits profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_INTRA: Main Intra profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_10_INTRA: Main Intra 10-bits profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_12_INTRA: Main Intra 12-bits profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_422_10_INTRA: Main Intra 4:2:2 10-bits profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_422_12_INTRA: Main Intra 4:2:2 12-bits profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_444_INTRA: Main Intra 4:4:4 profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_444_10_INTRA: Main Intra 4:4:4 10-bits profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_444_12_INTRA: Main Intra 4:4:4 12-bits profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_444_16_INTRA: Main Intra 4:4:4 16-bits profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_444_STILL_PICTURE: Main 4:4:4 Still Picture profile (A.3.4)
 * @GST_H265_PROFILE_MAIN_444_16_STILL_PICTURE: Main 4:4:4 16-bits Still Picture profile (A.3.4)
 * @GST_H265_PROFILE_MONOCHROME_10:  Monochrome 10-bits profile (A.3.5) (Since: 1.18)
 * @GST_H265_PROFILE_HIGH_THROUGHPUT_444: High Throughput 4:4:4 profile (A.3.6) (Since: 1.18)
 * @GST_H265_PROFILE_HIGH_THROUGHPUT_444_10: High Throughput 4:4:4 10-bits profile (A.3.6) (Since: 1.18)
 * @GST_H265_PROFILE_HIGH_THROUGHPUT_444_14: High Throughput 4:4:4 14-bits profile (A.3.6) (Since: 1.18)
 * @GST_H265_PROFILE_HIGH_THROUGHPUT_444_16_INTRA: High Throughput 4:4:4 16-bits Intra profile (A.3.6) (Since: 1.18)
 * @GST_H265_PROFILE_SCREEN_EXTENDED_MAIN: Screen-Extended Main profile (A.3.7) (Since: 1.18)
 * @GST_H265_PROFILE_SCREEN_EXTENDED_MAIN_10: Screen-Extended Main 10-bits profile (A.3.7) (Since: 1.18)
 * @GST_H265_PROFILE_SCREEN_EXTENDED_MAIN_444: Screen-Extended Main 4:4:4 profile (A.3.7) (Since: 1.18)
 * @GST_H265_PROFILE_SCREEN_EXTENDED_MAIN_444_10: Screen-Extended Main 4:4:4 10-bits profile (A.3.7) (Since: 1.18)
 * @GST_H265_PROFILE_SCREEN_EXTENDED_HIGH_THROUGHPUT_444: Screen-Extended High Throughput 4:4:4 profile (A.3.7) (Since: 1.18)
 * @GST_H265_PROFILE_SCREEN_EXTENDED_HIGH_THROUGHPUT_444_10: Screen-Extended High Throughput 4:4:4 10-bits profile (A.3.7) (Since: 1.18)
 * @GST_H265_PROFILE_SCREEN_EXTENDED_HIGH_THROUGHPUT_444_14: Screen-Extended High Throughput 4:4:4 14-bits profile (A.3.7) (Since: 1.18)
 * @GST_H265_PROFILE_MULTIVIEW_MAIN: Multiview Main profile (G.11.1) (Since: 1.18)
 * @GST_H265_PROFILE_SCALABLE_MAIN: Scalable Main profile (H.11.1) (Since: 1.18)
 * @GST_H265_PROFILE_SCALABLE_MAIN_10: Scalable Main 10-bits profile (H.11.1) (Since: 1.18)
 * @GST_H265_PROFILE_SCALABLE_MONOCHROME: Scalable Monochrome profile (H.11.1) (Since: 1.18)
 * @GST_H265_PROFILE_SCALABLE_MONOCHROME_12: Scalable Monochrome 12-bits profile (H.11.1) (Since: 1.18)
 * @GST_H265_PROFILE_SCALABLE_MONOCHROME_16: Scalable Monochrome 16-bits profile (H.11.1) (Since: 1.18)
 * @GST_H265_PROFILE_SCALABLE_MAIN_444: Scalable Main 4:4:4 profile (H.11.1) (Since: 1.18)
 * @GST_H265_PROFILE_3D_MAIN: 3D Main 4:4:4 profile (I.11.1) (Since: 1.18)
 *
 * H.265 Profiles.
 *
 */
typedef enum {
  GST_H265_PROFILE_INVALID              = -1,
  GST_H265_PROFILE_MAIN                 = 1,
  GST_H265_PROFILE_MAIN_10              = 2,
  GST_H265_PROFILE_MAIN_STILL_PICTURE   = 3,
  GST_H265_PROFILE_MONOCHROME,
  GST_H265_PROFILE_MONOCHROME_12,
  GST_H265_PROFILE_MONOCHROME_16,
  GST_H265_PROFILE_MAIN_12,
  GST_H265_PROFILE_MAIN_422_10,
  GST_H265_PROFILE_MAIN_422_12,
  GST_H265_PROFILE_MAIN_444,
  GST_H265_PROFILE_MAIN_444_10,
  GST_H265_PROFILE_MAIN_444_12,
  GST_H265_PROFILE_MAIN_INTRA,
  GST_H265_PROFILE_MAIN_10_INTRA,
  GST_H265_PROFILE_MAIN_12_INTRA,
  GST_H265_PROFILE_MAIN_422_10_INTRA,
  GST_H265_PROFILE_MAIN_422_12_INTRA,
  GST_H265_PROFILE_MAIN_444_INTRA,
  GST_H265_PROFILE_MAIN_444_10_INTRA,
  GST_H265_PROFILE_MAIN_444_12_INTRA,
  GST_H265_PROFILE_MAIN_444_16_INTRA,
  GST_H265_PROFILE_MAIN_444_STILL_PICTURE,
  GST_H265_PROFILE_MAIN_444_16_STILL_PICTURE,
  GST_H265_PROFILE_MONOCHROME_10,
  GST_H265_PROFILE_HIGH_THROUGHPUT_444,
  GST_H265_PROFILE_HIGH_THROUGHPUT_444_10,
  GST_H265_PROFILE_HIGH_THROUGHPUT_444_14,
  GST_H265_PROFILE_HIGH_THROUGHPUT_444_16_INTRA,
  GST_H265_PROFILE_SCREEN_EXTENDED_MAIN,
  GST_H265_PROFILE_SCREEN_EXTENDED_MAIN_10,
  GST_H265_PROFILE_SCREEN_EXTENDED_MAIN_444,
  GST_H265_PROFILE_SCREEN_EXTENDED_MAIN_444_10,
  GST_H265_PROFILE_SCREEN_EXTENDED_HIGH_THROUGHPUT_444,
  GST_H265_PROFILE_SCREEN_EXTENDED_HIGH_THROUGHPUT_444_10,
  GST_H265_PROFILE_SCREEN_EXTENDED_HIGH_THROUGHPUT_444_14,
  GST_H265_PROFILE_MULTIVIEW_MAIN,
  GST_H265_PROFILE_SCALABLE_MAIN,
  GST_H265_PROFILE_SCALABLE_MAIN_10,
  GST_H265_PROFILE_SCALABLE_MONOCHROME,
  GST_H265_PROFILE_SCALABLE_MONOCHROME_12,
  GST_H265_PROFILE_SCALABLE_MONOCHROME_16,
  GST_H265_PROFILE_SCALABLE_MAIN_444,
  GST_H265_PROFILE_3D_MAIN,

  /* end of the profiles */
  GST_H265_PROFILE_MAX
} GstH265Profile;

/**
 * GstH265ProfileIDC:
 * @GST_H265_PROFILE_IDC_MAIN: Main profile (A.3.2)
 * @GST_H265_PROFILE_IDC_MAIN_10: Main 10 profile (A.3.3)
 * @GST_H265_PROFILE_IDC_MAIN_STILL_PICTURE: Main Still Picture profile (A.3.4)
 * @GST_H265_PROFILE_IDC_FORMAT_RANGE_EXTENSION: Format range extensions profile (A.3.5)
 * @GST_H265_PROFILE_IDC_HIGH_THROUGHPUT: High throughput profiles (A.3.6)
 * @GST_H265_PROFILE_IDC_MULTIVIEW_MAIN: Multiview Main profiles (G.11.1) (Since: 1.18)
 * @GST_H265_PROFILE_IDC_SCALABLE_MAIN: Scalable Main and Scalable Main 10 profile (H.11.1) (Since: 1.18)
 * @GST_H265_PROFILE_IDC_SCREEN_CONTENT_CODING: Screen content coding extensions profiles (A.3.7)
 * @GST_H265_PROFILE_IDC_3D_MAIN: 3D Main profile (I.11.1) (Since: 1.18)
 * @GST_H265_PROFILE_IDC_SCALABLE_FORMAT_RANGE_EXTENSION: Scalable Format range extensions profiles (H.11.1) (Since: 1.18)
 * @GST_H265_PROFILE_IDC_HIGH_THROUGHPUT_SCREEN_CONTENT_CODING_EXTENSION: High throughput screen content coding extensions profiles (A.3.8) (Since: 1.18)
 *
 * Valid values for the profile_idc field. This is different from
 * #GstH265Profile as an extension idc can be used to encode a whole variety of
 * profiles.
 *
 */
typedef enum {
  GST_H265_PROFILE_IDC_MAIN                   = 1,
  GST_H265_PROFILE_IDC_MAIN_10                = 2,
  GST_H265_PROFILE_IDC_MAIN_STILL_PICTURE     = 3,
  GST_H265_PROFILE_IDC_FORMAT_RANGE_EXTENSION = 4,
  GST_H265_PROFILE_IDC_HIGH_THROUGHPUT        = 5,
  GST_H265_PROFILE_IDC_MULTIVIEW_MAIN         = 6,
  GST_H265_PROFILE_IDC_SCALABLE_MAIN          = 7,
  GST_H265_PROFILE_IDC_3D_MAIN                = 8,
  GST_H265_PROFILE_IDC_SCREEN_CONTENT_CODING  = 9,
  GST_H265_PROFILE_IDC_SCALABLE_FORMAT_RANGE_EXTENSION = 10,
  GST_H265_PROFILE_IDC_HIGH_THROUGHPUT_SCREEN_CONTENT_CODING_EXTENSION = 11,
} GstH265ProfileIDC;

/**
 * GstH265NalUnitType:
 * @GST_H265_NAL_SLICE_TRAIL_N: Slice nal of a non-TSA, non-STSA trailing picture
 * @GST_H265_NAL_SLICE_TRAIL_R: Slice nal of a non-TSA, non-STSA trailing picture
 * @GST_H265_NAL_SLICE_TSA_N: Slice nal of a TSA picture
 * @GST_H265_NAL_SLICE_TSA_R: Slice nal of a TSA picture
 * @GST_H265_NAL_SLICE_STSA_N: Slice nal of a STSA picture
 * @GST_H265_NAL_SLICE_STSA_R: Slice nal of a STSA picture
 * @GST_H265_NAL_SLICE_RADL_N: Slice nal of a RADL picture
 * @GST_H265_NAL_SLICE_RADL_R: Slice nal of a RADL piicture
 * @GST_H265_NAL_SLICE_RASL_N: Slice nal of a RASL picture
 * @GST_H265_NAL_SLICE_RASL_R: Slice nal of a RASL picture
 * @GST_H265_NAL_SLICE_BLA_W_LP: Slice nal of a BLA picture
 * @GST_H265_NAL_SLICE_BLA_W_RADL: Slice nal of a BLA picture
 * @GST_H265_NAL_SLICE_BLA_N_LP: Slice nal of a BLA picture
 * @GST_H265_NAL_SLICE_IDR_W_RADL: Slice nal of an IDR picture
 * @GST_H265_NAL_SLICE_IDR_N_LP: Slice nal of an IDR picture
 * @GST_H265_NAL_SLICE_CRA_NUT: Slice nal of a CRA picture
 * @GST_H265_NAL_VPS: Video parameter set(VPS) nal unit
 * @GST_H265_NAL_SPS: Sequence parameter set (SPS) nal unit
 * @GST_H265_NAL_PPS: Picture parameter set (PPS) nal unit
 * @GST_H265_NAL_AUD: Access unit (AU) delimiter nal unit
 * @GST_H265_NAL_EOS: End of sequence (EOS) nal unit
 * @GST_H265_NAL_EOB: End of bitstream (EOB) nal unit
 * @GST_H265_NAL_FD: Filler data (FD) nal lunit
 * @GST_H265_NAL_PREFIX_SEI: Supplemental enhancement information prefix nal unit
 * @GST_H265_NAL_SUFFIX_SEI: Suppliemental enhancement information suffix nal unit
 *
 * Indicates the type of H265 Nal Units
 */
typedef enum
{
  GST_H265_NAL_SLICE_TRAIL_N    = 0,
  GST_H265_NAL_SLICE_TRAIL_R    = 1,
  GST_H265_NAL_SLICE_TSA_N      = 2,
  GST_H265_NAL_SLICE_TSA_R      = 3,
  GST_H265_NAL_SLICE_STSA_N     = 4,
  GST_H265_NAL_SLICE_STSA_R     = 5,
  GST_H265_NAL_SLICE_RADL_N     = 6,
  GST_H265_NAL_SLICE_RADL_R     = 7,
  GST_H265_NAL_SLICE_RASL_N     = 8,
  GST_H265_NAL_SLICE_RASL_R     = 9,
  GST_H265_NAL_SLICE_BLA_W_LP   = 16,
  GST_H265_NAL_SLICE_BLA_W_RADL = 17,
  GST_H265_NAL_SLICE_BLA_N_LP   = 18,
  GST_H265_NAL_SLICE_IDR_W_RADL = 19,
  GST_H265_NAL_SLICE_IDR_N_LP   = 20,
  GST_H265_NAL_SLICE_CRA_NUT    = 21,
  GST_H265_NAL_VPS              = 32,
  GST_H265_NAL_SPS              = 33,
  GST_H265_NAL_PPS              = 34,
  GST_H265_NAL_AUD              = 35,
  GST_H265_NAL_EOS              = 36,
  GST_H265_NAL_EOB              = 37,
  GST_H265_NAL_FD               = 38,
  GST_H265_NAL_PREFIX_SEI       = 39,
  GST_H265_NAL_SUFFIX_SEI       = 40
} GstH265NalUnitType;

#define RESERVED_NON_IRAP_SUBLAYER_NAL_TYPE_MIN 10
#define RESERVED_NON_IRAP_SUBLAYER_NAL_TYPE_MAX 15

#define RESERVED_IRAP_NAL_TYPE_MIN 22
#define RESERVED_IRAP_NAL_TYPE_MAX 23

#define RESERVED_NON_IRAP_NAL_TYPE_MIN 24
#define RESERVED_NON_IRAP_NAL_TYPE_MAX 31

#define RESERVED_NON_VCL_NAL_TYPE_MIN 41
#define RESERVED_NON_VCL_NAL_TYPE_MAX 47

#define UNSPECIFIED_NON_VCL_NAL_TYPE_MIN 48
#define UNSPECIFIED_NON_VCL_NAL_TYPE_MAX 63

/**
 * GstH265ParserResult:
 * @GST_H265_PARSER_OK: The parsing succeeded
 * @GST_H265_PARSER_BROKEN_DATA: The data to parse is broken
 * @GST_H265_PARSER_BROKEN_LINK: The link to structure needed for the parsing couldn't be found
 * @GST_H265_PARSER_ERROR: An error accured when parsing
 * @GST_H265_PARSER_NO_NAL: No nal found during the parsing
 * @GST_H265_PARSER_NO_NAL_END: Start of the nal found, but not the end.
 *
 * The result of parsing H265 data.
 */
typedef enum
{
  GST_H265_PARSER_OK,
  GST_H265_PARSER_BROKEN_DATA,
  GST_H265_PARSER_BROKEN_LINK,
  GST_H265_PARSER_ERROR,
  GST_H265_PARSER_NO_NAL,
  GST_H265_PARSER_NO_NAL_END
} GstH265ParserResult;

/**
 * GstH265SEIPayloadType:
 * @GST_H265_SEI_BUF_PERIOD: Buffering Period SEI Message
 * @GST_H265_SEI_PIC_TIMING: Picture Timing SEI Message
 * @GST_H265_SEI_REGISTERED_USER_DATA: Registered user data (D.2.5)
 * @GST_H265_SEI_RECOVERY_POINT: Recovery Point SEI Message (D.3.8)
 * @GST_H265_SEI_TIME_CODE: Time code SEI message (D.2.27) (Since: 1.16)
 * @GST_H265_SEI_MASTERING_DISPLAY_COLOUR_VOLUME: Mastering display colour volume information SEI message (D.2.28) (Since: 1.18)
 * @GST_H265_SEI_CONTENT_LIGHT_LEVEL: Content light level information SEI message (D.2.35) (Since: 1.18)
 * ...
 *
 * The type of SEI message.
 */
typedef enum
{
  GST_H265_SEI_BUF_PERIOD = 0,
  GST_H265_SEI_PIC_TIMING = 1,
  GST_H265_SEI_REGISTERED_USER_DATA = 4,
  GST_H265_SEI_RECOVERY_POINT = 6,
  GST_H265_SEI_TIME_CODE = 136,
  GST_H265_SEI_MASTERING_DISPLAY_COLOUR_VOLUME = 137,
  GST_H265_SEI_CONTENT_LIGHT_LEVEL = 144,
      /* and more...  */
} GstH265SEIPayloadType;

/**
 * GstH265SEIPicStructType:
 * @GST_H265_SEI_PIC_STRUCT_FRAME: Picture is a frame
 * @GST_H265_SEI_PIC_STRUCT_TOP_FIELD: Top field of frame
 * @GST_H265_SEI_PIC_STRUCT_BOTTOM_FIELD: Botom field of frame
 * @GST_H265_SEI_PIC_STRUCT_TOP_BOTTOM: Top bottom field of frame
 * @GST_H265_SEI_PIC_STRUCT_BOTTOM_TOP: bottom top field of frame
 * @GST_H265_SEI_PIC_STRUCT_TOP_BOTTOM_TOP: top bottom top field of frame
 * @GST_H265_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM: bottom top bottom field of frame
 * @GST_H265_SEI_PIC_STRUCT_FRAME_DOUBLING: indicates that the frame should
 *  be displayed two times consecutively
 * @GST_H265_SEI_PIC_STRUCT_FRAME_TRIPLING: indicates that the frame should be
 *  displayed three times consecutively
 * @GST_H265_SEI_PIC_STRUCT_TOP_PAIRED_PREVIOUS_BOTTOM: top field paired with
 *  previous bottom field in output order
 * @GST_H265_SEI_PIC_STRUCT_BOTTOM_PAIRED_PREVIOUS_TOP: bottom field paried with
 *  previous top field in output order
 * @GST_H265_SEI_PIC_STRUCT_TOP_PAIRED_NEXT_BOTTOM: top field paired with next
 *  bottom field in output order
 * @GST_H265_SEI_PIC_STRUCT_BOTTOM_PAIRED_NEXT_TOP: bottom field paired with
 *  next top field in output order
 *
 * SEI pic_struct type
 */
typedef enum
{
  GST_H265_SEI_PIC_STRUCT_FRAME                         = 0,
  GST_H265_SEI_PIC_STRUCT_TOP_FIELD                     = 1,
  GST_H265_SEI_PIC_STRUCT_BOTTOM_FIELD                  = 2,
  GST_H265_SEI_PIC_STRUCT_TOP_BOTTOM                    = 3,
  GST_H265_SEI_PIC_STRUCT_BOTTOM_TOP                    = 4,
  GST_H265_SEI_PIC_STRUCT_TOP_BOTTOM_TOP                = 5,
  GST_H265_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM             = 6,
  GST_H265_SEI_PIC_STRUCT_FRAME_DOUBLING                = 7,
  GST_H265_SEI_PIC_STRUCT_FRAME_TRIPLING                = 8,
  GST_H265_SEI_PIC_STRUCT_TOP_PAIRED_PREVIOUS_BOTTOM    = 9,
  GST_H265_SEI_PIC_STRUCT_BOTTOM_PAIRED_PREVIOUS_TOP    = 10,
  GST_H265_SEI_PIC_STRUCT_TOP_PAIRED_NEXT_BOTTOM        = 11,
  GST_H265_SEI_PIC_STRUCT_BOTTOM_PAIRED_NEXT_TOP        = 12
} GstH265SEIPicStructType;

/**
 * GstH265SliceType:
 *
 * Type of Picture slice
 */

typedef enum
{
  GST_H265_B_SLICE    = 0,
  GST_H265_P_SLICE    = 1,
  GST_H265_I_SLICE    = 2
} GstH265SliceType;

typedef enum
{
  GST_H265_QUANT_MATIX_4X4   = 0,
  GST_H265_QUANT_MATIX_8X8   = 1,
  GST_H265_QUANT_MATIX_16X16 = 2,
  GST_H265_QUANT_MATIX_32X32 = 3
} GstH265QuantMatrixSize;

typedef struct _GstH265Parser                   GstH265Parser;

typedef struct _GstH265NalUnit                  GstH265NalUnit;

typedef struct _GstH265VPS                      GstH265VPS;
typedef struct _GstH265SPS                      GstH265SPS;
typedef struct _GstH265PPS                      GstH265PPS;
typedef struct _GstH265ProfileTierLevel         GstH265ProfileTierLevel;
typedef struct _GstH265SubLayerHRDParams        GstH265SubLayerHRDParams;
typedef struct _GstH265HRDParams                GstH265HRDParams;
typedef struct _GstH265VUIParams                GstH265VUIParams;
typedef struct _GstH265SPSExtensionParams       GstH265SPSExtensionParams;
typedef struct _GstH265SPSSccExtensionParams    GstH265SPSSccExtensionParams;
typedef struct _GstH265PPSExtensionParams       GstH265PPSExtensionParams;
typedef struct _GstH265PPSSccExtensionParams    GstH265PPSSccExtensionParams;

typedef struct _GstH265ScalingList              GstH265ScalingList;
typedef struct _GstH265RefPicListModification   GstH265RefPicListModification;
typedef struct _GstH265PredWeightTable          GstH265PredWeightTable;
typedef struct _GstH265ShortTermRefPicSet       GstH265ShortTermRefPicSet;
typedef struct _GstH265SliceHdr                 GstH265SliceHdr;

typedef struct _GstH265PicTiming                GstH265PicTiming;
typedef struct _GstH265RegisteredUserData     	GstH265RegisteredUserData;
typedef struct _GstH265BufferingPeriod          GstH265BufferingPeriod;
typedef struct _GstH265RecoveryPoint            GstH265RecoveryPoint;
typedef struct _GstH265TimeCode                 GstH265TimeCode;
typedef struct _GstH265MasteringDisplayColourVolume GstH265MasteringDisplayColourVolume;
typedef struct _GstH265ContentLightLevel        GstH265ContentLightLevel;
typedef struct _GstH265SEIMessage               GstH265SEIMessage;

/**
 * GstH265NalUnit:
 * @type: A #GstH265NalUnitType
 * @layer_id: A nal unit layer id
 * @temporal_id_plus1: A nal unit temporal identifier
 * @size: The size of the nal unit starting from @offset
 * @offset: The offset of the actual start of the nal unit
 * @sc_offset:The offset of the start code of the nal unit
 * @valid: If the nal unit is valid, which mean it has
 * already been parsed
 * @data: The data from which the Nalu has been parsed
 *
 * Structure defining the Nal unit headers
 */
struct _GstH265NalUnit
{
  guint8 type;
  guint8 layer_id;
  guint8 temporal_id_plus1;

  /* calculated values */
  guint size;
  guint offset;
  guint sc_offset;
  gboolean valid;

  guint8 *data;
  guint8 header_bytes;
};

/**
 * GstH265ProfileTierLevel:
 * @profile_space: specifies the context for the interpretation of
 *   general_profile_idc and general_profile_combatibility_flag
 * @tier_flag: the tier context for the interpretation of general_level_idc
 * @profile_idc: profile id
 * @profile_compatibility_flag: compatibility flags
 * @progressive_source_flag: flag to indicate the type of stream
 * @interlaced_source_flag: flag to indicate the type of stream
 * @non_packed_constraint_flag: indicate the presence of frame packing
 *   arrangement sei message
 * @frame_only_constraint_flag: recognize the field_seq_flag
 * @max_12bit_constraint_flag: used to define profile extensions, see Annex A
 * @max_10bit_constraint_flag: used to define profile extensions, see Annex A
 * @max_8bit_constraint_flag: used to define profile extensions, see Annex A
 * @max_422chroma_constraint_flag: used to define profile extensions, see Annex A
 * @max_420chroma_constraint_flag: used to define profile extensions, see Annex A
 * @max_monochrome_constraint_flag: used to define profile extensions, see Annex A
 * @intra_constraint_flag: used to define profile extensions, see Annex A
 * @one_picture_only_constraint_flag: used to define profile extensions, see Annex A
 * @lower_bit_rate_constraint_flag: used to define profile extensions, see Annex A
 * @max_14bit_constraint_flag: used to define profile extensions, see Annex A
 * @level idc: indicate the level which the CVS confirms
 * @sub_layer_profile_present_flag: sublayer profile presence ind
 * @sub_layer_level_present_flag:sublayer level presence indicator.
 * @sub_layer_profile_space: profile space for sublayers
 * @sub_layer_tier_flag: tier flags for sublayers.
 * @sub_layer_profile_idc: conformant profile indicator for sublayers.
 * @sub_layer_profile_compatibility_flag[6][32]: compatibility flags for sublayers
 * @sub_layer_progressive_source_flag:progressive stream indicator for sublayer
 * @sub_layer_interlaced_source_flag: interlaced stream indicator for sublayer
 * @sub_layer_non_packed_constraint_flag: indicate the presence of
 *   frame packing arrangement sei message with in sublayers
 * @sub_layer_frame_only_constraint_flag:recognize the sublayer
 *   specific field_seq_flag
 * @sub_layer_level_idc:indicate the sublayer specific level
 *
 * Define ProfileTierLevel parameters
 */
struct _GstH265ProfileTierLevel {
  guint8 profile_space;
  guint8 tier_flag;
  guint8 profile_idc;

  guint8 profile_compatibility_flag[32];

  guint8 progressive_source_flag;
  guint8 interlaced_source_flag;
  guint8 non_packed_constraint_flag;
  guint8 frame_only_constraint_flag;

  guint8 max_12bit_constraint_flag;
  guint8 max_10bit_constraint_flag;
  guint8 max_8bit_constraint_flag;
  guint8 max_422chroma_constraint_flag;
  guint8 max_420chroma_constraint_flag;
  guint8 max_monochrome_constraint_flag;
  guint8 intra_constraint_flag;
  guint8 one_picture_only_constraint_flag;
  guint8 lower_bit_rate_constraint_flag;
  guint8 max_14bit_constraint_flag;

  guint8 level_idc;

  guint8 sub_layer_profile_present_flag[6];
  guint8 sub_layer_level_present_flag[6];

  guint8 sub_layer_profile_space[6];
  guint8 sub_layer_tier_flag[6];
  guint8 sub_layer_profile_idc[6];
  guint8 sub_layer_profile_compatibility_flag[6][32];
  guint8 sub_layer_progressive_source_flag[6];
  guint8 sub_layer_interlaced_source_flag[6];
  guint8 sub_layer_non_packed_constraint_flag[6];
  guint8 sub_layer_frame_only_constraint_flag[6];
  guint8 sub_layer_level_idc[6];
};

/**
 * GstH265SubLayerHRDParams:
 * @bit_rate_value_minus1:togeter with bit_rate_scale, it specifies
 *   the maximum input bitrate when the CPB operates at the access
 *   unit level
 * @cpb_size_value_minus1: is used together with cpb_size_scale to
 *   specify the CPB size when the CPB operates at the access unit
 *   level
 * @cpb_size_du_value_minus1: is used together with cpb_size_du_scale
 *   to specify the CPB size when the CPB operates at sub-picture
 *   level
 * @bit_rate_du_value_minus1: together with bit_rate_scale, it
 *   specifies the maximum input bit rate when the CPB operates at the
 *   sub-picture level
 * @cbr_flag: indicate whether HSS operates in intermittent bit rate
 *   mode or constant bit rate mode.
 *
 * Defines the Sublayer HRD parameters
 */
struct _GstH265SubLayerHRDParams
{
  guint32 bit_rate_value_minus1[32];
  guint32 cpb_size_value_minus1[32];

  guint32 cpb_size_du_value_minus1[32];
  guint32 bit_rate_du_value_minus1[32];

  guint8 cbr_flag[32];
};

/**
 * GstH265HRDParams:
 * @nal_hrd_parameters_present_flag: indicate the presence of NAL HRD parameters
 * @vcl_hrd_parameters_present_flag: indicate the presence of VCL HRD parameters
 * @sub_pic_hrd_params_present_flag: indicate the presence of sub_pic_hrd_params
 * @tick_divisor_minus2: is used to specify the clock sub-tick
 * @du_cpb_removal_delay_increment_length_minus1: specifies the length,
 *   in bits, of the nal_initial_cpb_removal_delay
 * @sub_pic_cpb_params_in_pic_timing_sei_flag: specifies the length, in bits, of
 *   the cpb_delay_offset and the au_cpb_removal_delay_minus1 syntax elements.
 * @dpb_output_delay_du_length_minu1: specifies the length, in bits, of the
 *   dpb_delay_offset and the pic_dpb_output_delay syntax elements
 * @bit_rate_scale: maximum input bitrate
 * @cpb_size_scale: CPB size when operates in access unit level
 * @cpb_size_du_scale: CPB size when operates in sub-picture level
 * @initial_cpb_removal_delay_length_minus1: specifies the length, in bits, of the
 *   nal_initial_cpb_removal_delay, nal_initial_cpb_removal_offset,
 *   vcl_initial_cpb_removal_delay and vcl_initial_cpb_removal_offset.
 * @au_cpb_removal_delay_length_minus1: specifies the length, in bits, of the
 *   cpb_delay_offset and the au_cpb_removal_delay_minus1 syntax elements
 * @dpb_output_delay_length_minus1: specifies the length, in bits, of the
 *   dpb_delay_offset and the pic_dpb_output_delay syntax elements
 * @fixed_pic_rate_general_flag: flag to indicate the presence of constraint
 *   on the temporal distance between the HRD output times of consecutive
 *   pictures in output order
 * @fixed_pic_rate_within_cvs_flag: same as fixed_pic_rate_general_flag
 * @elemental_duration_in_tc_minus1: temporal distance in clock ticks
 * @low_delay_hrd_flag: specifies the HRD operational mode
 * @cpb_cnt_minus1:specifies the number of alternative CPS specifications.
 * @sublayer_hrd_params: Sublayer HRD parameters.
 *
 * Defines the HRD parameters
 */
struct _GstH265HRDParams
{
  guint8 nal_hrd_parameters_present_flag;
  guint8 vcl_hrd_parameters_present_flag;
  guint8 sub_pic_hrd_params_present_flag;

  guint8 tick_divisor_minus2;
  guint8 du_cpb_removal_delay_increment_length_minus1;
  guint8 sub_pic_cpb_params_in_pic_timing_sei_flag;
  guint8 dpb_output_delay_du_length_minus1;

  guint8 bit_rate_scale;
  guint8 cpb_size_scale;
  guint8 cpb_size_du_scale;

  guint8 initial_cpb_removal_delay_length_minus1;
  guint8 au_cpb_removal_delay_length_minus1;
  guint8 dpb_output_delay_length_minus1;

  guint8 fixed_pic_rate_general_flag [7];
  guint8 fixed_pic_rate_within_cvs_flag [7];
  guint16 elemental_duration_in_tc_minus1 [7];
  guint8 low_delay_hrd_flag [7];
  guint8 cpb_cnt_minus1[7];

  GstH265SubLayerHRDParams sublayer_hrd_params[7];
};

/**
 * GstH265VPS:
 * @id: vps id
 * @base_layer_internal_flag and @base_layer_available_flag:
 *   specify availability of base layer
 * @max_layers_minus1: should be zero, but can be other values in future
 * @max_sub_layers_minus1:specifies the maximum number of temporal sub-layers
 * @temporal_id_nesting_flag: specifies whether inter prediction is
 *   additionally restricted
 * @profile_tier_level: ProfileTierLevel info
 * @sub_layer_ordering_info_present_flag: indicates the presence of
 *   vps_max_dec_pic_buffering_minus1, vps_max_num_reorder_pics and
 *   vps_max_latency_increase_plus1
 * @max_dec_pic_buffering_minus1: specifies the maximum required size
 *   of the decoded picture buffer
 * @max_num_reorder_pics: indicates the maximum allowed number of
 *   pictures that can precede any picture in the CVS in decoding
 *   order
 * @max_latency_increase_plus1: is used to compute the value of
 *   VpsMaxLatencyPictures
 * @max_layer_id: specifies the maximum allowed value of nuh_layer_id
 * @num_layer_sets_minus1: specifies the number of layer sets
 * @layer_id_included_flag: specifies whether a nuh_layer_id included
 *   in the layer identifier list
 * @timing_info_present_flag: indicate the presence of
 *   num_units_in_tick, time_scale, poc_proportional_to_timing_flag
 *   and num_hrd_parameters
 * @num_units_in_tick: number of time units in a tick
 * @time_scale: number of time units that pass in one second
 * @poc_proportional_to_timing_flag: indicate whether the picture
 *   order count is proportional to output timin
 * @num_ticks_poc_diff_one_minus1: specifies the number of clock ticks
 *   corresponding to a difference of picture order count values equal
 *   to 1
 * @num_hrd_parameters: number of hrd_parameters present
 * @hrd_layer_set_idx: index to the list of layer hrd params.
 * @hrd_params: the GstH265HRDParams list
 *
 * Defines the VPS parameters
 */
struct _GstH265VPS {
  guint8 id;

  guint8 base_layer_internal_flag;
  guint8 base_layer_available_flag;

  guint8 max_layers_minus1;
  guint8 max_sub_layers_minus1;
  guint8 temporal_id_nesting_flag;

  GstH265ProfileTierLevel profile_tier_level;

  guint8 sub_layer_ordering_info_present_flag;
  guint8 max_dec_pic_buffering_minus1[GST_H265_MAX_SUB_LAYERS];
  guint8 max_num_reorder_pics[GST_H265_MAX_SUB_LAYERS];
  guint32 max_latency_increase_plus1[GST_H265_MAX_SUB_LAYERS];

  guint8 max_layer_id;
  guint16 num_layer_sets_minus1;

  guint8 timing_info_present_flag;
  guint32 num_units_in_tick;
  guint32 time_scale;
  guint8 poc_proportional_to_timing_flag;
  guint32 num_ticks_poc_diff_one_minus1;

  guint16 num_hrd_parameters;

  /* FIXME: following HRD related info should be an array */
  guint16 hrd_layer_set_idx;
  guint8 cprms_present_flag;
  GstH265HRDParams hrd_params;

  guint8 vps_extension;

  gboolean valid;
};
/**
 * GstH265ShortTermRefPicSet:
 * @inter_ref_pic_set_prediction_flag: %TRUE specifies that the stRpsIdx-th candidate
 *  short-term RPS is predicted from another candidate short-term RPS
 * @delta_idx_minus1: plus 1 specifies the difference between the value of source and
 *  candidate short term RPS.
 * @delta_rps_sign: delta_rps_sign and abs_delta_rps_minus1 together specify
 *  the value of the variable deltaRps.
 * @abs_delta_rps_minus1: delta_rps_sign and abs_delta_rps_minus1 together specify
 *  the value of the variable deltaRps
 * @NumDeltaPocs: sum of @NumNegativePics and @NumPositivePics.
 * @NumNegativePics: Derived value depending on inter_ref_pic_set_prediction_flag.
 *  If inter_ref_pic_set_prediction_flag is equal to 0, this specifies
 *  the number of entries in the stRpsIdx-th candidate
 *  short-term RPS that have poc values less than the poc of the current picture.
 * @NumPositivePics: Derived value depending on inter_ref_pic_set_prediction_flag.
 *  If inter_ref_pic_set_prediction_flag is equal to 0, this specifies
 *  the number of entires in the stRpsIdx-th candidate
 *  short-term RPS that have poc values greater than the poc value of the current picture.
 * @UsedByCurrPicS0: Derived value depending on inter_ref_pic_set_prediction_flag.
 *  If inter_ref_pic_set_prediction_flag is equal to 0,
 *  equal to zero specifies that the i-th entry in the stRpsIdx-th
 *  candidate short-term RPS that has poc value less than of the current picture
 *  is not used for reference by the current picture
 * @UsedByCurrPicS1: Derived value depending on inter_ref_pic_set_prediction_flag.
 *  If inter_ref_pic_set_prediction_flag is equal to 0,
 *  equal to zero specifies that the i-th entry in the current
 *  candidate short-term RPS that has poc value greater than that of the current picture
 *  is not used for reference by the current picture.
 * @DeltaPocS0: Derived value depending on inter_ref_pic_set_prediction_flag.
 *  See 7.4.8 Short-term reference picture set semantics
 * @DeltaPocS1: Derived value depending on inter_ref_pic_set_prediction_flag.
 *  See 7.4.8 Short-term reference picture set semantics
 * @NumDeltaPocsOfRefRpsIdx: The value of NumDeltaPocs[RefRpsIdx].
 *  If inter_ref_pic_set_prediction_flag is equal to 0,
 *  this value should be ignored (Since: 1.18)
 *
 * Defines the #GstH265ShortTermRefPicSet params
 */
struct _GstH265ShortTermRefPicSet
{
  guint8 inter_ref_pic_set_prediction_flag;
  guint8 delta_idx_minus1;
  guint8 delta_rps_sign;
  guint16 abs_delta_rps_minus1;

  /* calculated values */
  guint8 NumDeltaPocs;
  guint8 NumNegativePics;
  guint8 NumPositivePics;
  guint8 UsedByCurrPicS0[16];
  guint8 UsedByCurrPicS1[16];
  gint32 DeltaPocS0[16];
  gint32 DeltaPocS1[16];
  guint8 NumDeltaPocsOfRefRpsIdx;
};

/**
 * GstH265VUIParams:
 * @aspect_ratio_info_present_flag: %TRUE specifies that aspect_ratio_idc is present.
 *  %FALSE specifies that aspect_ratio_idc is not present
 * @aspect_ratio_idc specifies the value of the sample aspect ratio of the luma samples
 * @sar_width indicates the horizontal size of the sample aspect ratio
 * @sar_height indicates the vertical size of the sample aspect ratio
 * @overscan_info_present_flag: %TRUE overscan_appropriate_flag is present %FALSE otherwise
 * @overscan_appropriate_flag: %TRUE indicates that the cropped decoded pictures
 *  output are suitable for display using overscan. %FALSE the cropped decoded pictures
 *  output contain visually important information
 * @video_signal_type_present_flag: %TRUE specifies that video_format, video_full_range_flag and
 *  colour_description_present_flag are present.
 * @video_format: indicates the representation of the picture
 * @video_full_range_flag: indicates the black level and range of the luma and chroma signals
 * @colour_description_present_flag: %TRUE specifies that colour_primaries,
 *  transfer_characteristics and matrix_coefficients are present
 * @colour_primaries: indicates the chromaticity coordinates of the source primaries
 * @transfer_characteristics: indicates the opto-electronic transfer characteristic
 * @matrix_coefficients: describes the matrix coefficients used in deriving luma and chroma signals
 * @chroma_loc_info_present_flag: %TRUE specifies that chroma_sample_loc_type_top_field and
 *  chroma_sample_loc_type_bottom_field are present, %FALSE otherwise
 * @chroma_sample_loc_type_top_field: specify the location of chroma for top field
 * @chroma_sample_loc_type_bottom_field specify the location of chroma for bottom field
 * @neutral_chroma_indication_flag: %TRUE indicate that the value of chroma samples is equla
 *  to 1<<(BitDepthchrom-1).
 * @field_seq_flag: %TRUE indicate field and %FALSE indicate frame
 * @frame_field_info_present_flag: %TRUE indicate picture timing SEI messages are present for every
 *   picture and include the pic_struct, source_scan_type, and duplicate_flag syntax elements.
 * @default_display_window_flag: %TRUE indicate that the default display window parameters present
 * def_disp_win_left_offset:left offset of display rect
 * def_disp_win_right_offset: right offset of display rect
 * def_disp_win_top_offset: top offset of display rect
 * def_disp_win_bottom_offset: bottom offset of display rect
 * @timing_info_present_flag: %TRUE specifies that num_units_in_tick,
 *  time_scale and fixed_frame_rate_flag are present in the bitstream
 * @num_units_in_tick: is the number of time units of a clock operating at the frequency time_scale Hz
 * @time_scale: is the number of time units that pass in one second
 * @poc_proportional_to_timing_flag: %TRUE indicates that the picture order count value for each picture
 *  in the CVS that is not the first picture in the CVS, in decoding order, is proportional to the output
 *  time of the picture relative to the output time of the first picture in the CVS.
 * @num_ticks_poc_diff_one_minus1: plus 1 specifies the number of clock ticks corresponding to a
 *  difference of picture order count values equal to 1
 * @hrd_parameters_present_flag: %TRUE if hrd parameters present in the bitstream
 * @bitstream_restriction_flag: %TRUE specifies that the following coded video sequence bitstream restriction
 * parameters are present
 * @tiles_fixed_structure_flag: %TRUE indicates that each PPS that is active in the CVS has the same value
 *   of the syntax elements num_tile_columns_minus1, num_tile_rows_minus1, uniform_spacing_flag,
 *   column_width_minus1, row_height_minus1 and loop_filter_across_tiles_enabled_flag, when present
 * @motion_vectors_over_pic_boundaries_flag: %FALSE indicates that no sample outside the
 *  picture boundaries and no sample at a fractional sample position, %TRUE indicates that one or more
 *  samples outside picture boundaries may be used in inter prediction
 * @restricted_ref_pic_list_flag: %TRUE indicates that all P and B slices (when present) that belong to
 *  the same picture have an identical reference picture list 0, and that all B slices (when present)
 *   that belong to the same picture have an identical reference picture list 1
 * @min_spatial_segmentation_idc: when not equal to 0, establishes a bound on the maximum possible size
 *  of distinct coded spatial segmentation regions in the pictures of the CVS
 * @max_bytes_per_pic_denom: indicates a number of bytes not exceeded by the sum of the sizes of
 *  the VCL NAL units associated with any coded picture in the coded video sequence.
 * @max_bits_per_min_cu_denom: indicates an upper bound for the number of coded bits of coding_unit
 *  data for any coding block in any picture of the CVS
 * @log2_max_mv_length_horizontal: indicate the maximum absolute value of a decoded horizontal
 * motion vector component
 * @log2_max_mv_length_vertical: indicate the maximum absolute value of a decoded vertical
 *  motion vector component
 *
 * The structure representing the VUI parameters.
 */
struct _GstH265VUIParams
{
  guint8 aspect_ratio_info_present_flag;
  guint8 aspect_ratio_idc;
  /* if aspect_ratio_idc == 255 */
  guint16 sar_width;
  guint16 sar_height;

  guint8 overscan_info_present_flag;
  /* if overscan_info_present_flag */
  guint8 overscan_appropriate_flag;

  guint8 video_signal_type_present_flag;
  guint8 video_format;
  guint8 video_full_range_flag;
  guint8 colour_description_present_flag;
  guint8 colour_primaries;
  guint8 transfer_characteristics;
  guint8 matrix_coefficients;

  guint8 chroma_loc_info_present_flag;
  guint8 chroma_sample_loc_type_top_field;
  guint8 chroma_sample_loc_type_bottom_field;

  guint8 neutral_chroma_indication_flag;
  guint8 field_seq_flag;
  guint8 frame_field_info_present_flag;
  guint8 default_display_window_flag;
  guint32 def_disp_win_left_offset;
  guint32 def_disp_win_right_offset;
  guint32 def_disp_win_top_offset;
  guint32 def_disp_win_bottom_offset;

  guint8 timing_info_present_flag;
  /* if timing_info_present_flag */
  guint32 num_units_in_tick;
  guint32 time_scale;
  guint8 poc_proportional_to_timing_flag;
  /* if poc_proportional_to_timing_flag */
  guint32 num_ticks_poc_diff_one_minus1;
  guint8 hrd_parameters_present_flag;
  /*if hrd_parameters_present_flat */
  GstH265HRDParams hrd_params;

  guint8 bitstream_restriction_flag;
  /*  if bitstream_restriction_flag */
  guint8 tiles_fixed_structure_flag;
  guint8 motion_vectors_over_pic_boundaries_flag;
  guint8 restricted_ref_pic_lists_flag;
  guint16 min_spatial_segmentation_idc;
  guint8 max_bytes_per_pic_denom;
  guint8 max_bits_per_min_cu_denom;
  guint8 log2_max_mv_length_horizontal;
  guint8 log2_max_mv_length_vertical;

  /* calculated values */
  guint par_n;
  guint par_d;
};

/**
 * GstH265SPSExtensionParams:
 * @transform_skip_rotation_enabled_flag: %TRUE specifies that a rotation is applied to
 *   the residual data block from intra 4X4 blocks coded using a transform skip operation.
 * @transform_skip_context_enabled_flag: %TRUE specifies tspecifies that a particular
 *   context is used for the parsing of the sig_coeff_flag for transform blocks with a skipped
 *   transform.
 * @implicit_residual_dpcm_enabled_flag: %TRUE specifies that  the residual modification process
 *   for blocks using a transform bypass may be used for intra blocks in the CVS
 * @explicit_residual_dpcm_enabled_flag: %TRUE specifies that the residual modification process
 *   for blocks using a transform bypass may be used for inter blocks in the CVS
 * @extended_precision_processing_flag: %TRUE specifies that an extended dynamic range is used
 *   for coefficient parsing and inverse transform processing
 * @intra_smoothing_disabled_flag: %TRUE specifies that  the filtering process of neighbouring
 *   samples is unconditionally disabled for intra prediction
 * @high_precision_offsets_enabled_flag: %TRUE specifies that weighted prediction offset values
 *   are signalled using a bit-depth-dependent precision.
 * @persistent_rice_adaptation_enabled_flag: %TRUE specifies that the Rice parameter derivation
 *   for the binarization of coeff_abs_level_remaining[] is initialized at the start of each
 *   sub-block using mode dependent statistics accumulated from previous sub-blocks.
 * @cabac_bypass_alignment_enabled_flag: %TRUE specifies that a context-based adaptive binary
 *   arithmetic coding (CABAC) alignment process is used prior to bypass decoding of the syntax
 *   elements coeff_sign_flag[] and coeff_abs_level_remaining[]
 *
 * Defines the GstH265SPSExtensionParams
 */
struct _GstH265SPSExtensionParams {
  guint8 transform_skip_rotation_enabled_flag;
  guint8 transform_skip_context_enabled_flag;
  guint8 implicit_rdpcm_enabled_flag;
  guint8 explicit_rdpcm_enabled_flag;
  guint8 extended_precision_processing_flag;
  guint8 intra_smoothing_disabled_flag;
  guint8 high_precision_offsets_enabled_flag;
  guint8 persistent_rice_adaptation_enabled_flag;
  guint8 cabac_bypass_alignment_enabled_flag;
};

/**
 * GstH265SPSSccExtensionParams:
 * @sps_curr_pic_ref_enabled_flag: equal to 1 specifies that a picture in the CVS may be
 *   included in a reference picture list of a slice of the picture itself.
 * @palette_mode_enabled_flag: equal to 1 specifies that the decoding process for palette mode
 *   may be used for intra blocks. Equal to 0 specifies that the decoding process for palette
 *   mode is not applied.
 * @palette_max_size: specifies the maximum allowed palette size.
 * @delta_palette_max_predictor_size: specifies the difference between the maximum allowed
 *   palette predictor size and the maximum allowed palette size.
 * @sps_palette_predictor_initializers_present_flag: equal to 1 specifies that the sequence
 *   palette predictors are initialized using the sps_palette_predictor_initializer specified
 *   in clause 7.3.2.2.3.
 * @sps_num_palette_predictor_initializer_minus1: plus 1 specifies the number of entries in
 *   the sequence palette predictor initializer.
 * @sps_palette_predictor_initializer: specifies the value of the comp-th component of the
 *   i-th palette entry in the SPS that is used to initialize the array PredictorPaletteEntries.
 * @motion_vector_resolution_control_idc: controls the presence and inference of the
 *   use_integer_mv_flag that specifies the resolution of motion vectors for inter prediction.
 * @intra_boundary_filtering_disabled_flag: equal to 1 specifies that the intra boundary
 *   filtering process is unconditionally disabled for intra prediction.
 * Defines the _GstH265SPSSccExtensionParams
 *
 * Since: 1.18
 */
struct _GstH265SPSSccExtensionParams {
  guint8 sps_curr_pic_ref_enabled_flag;
  guint8 palette_mode_enabled_flag;
  guint8 palette_max_size;
  guint8 delta_palette_max_predictor_size;
  guint8 sps_palette_predictor_initializers_present_flag;
  guint8 sps_num_palette_predictor_initializer_minus1;
  guint32 sps_palette_predictor_initializer[3][128];
  guint8 motion_vector_resolution_control_idc;
  guint8 intra_boundary_filtering_disabled_flag;
};

/**
 * GstH265PPSExtensionParams:
 * @log2_max_transform_skip_block_size_minus2: plus 2 specifies the maximum transform block size for which
 *   transform_skip_flag may be present in coded pictures referring to the PPS.
 * @cross_component_prediction_enabled_flag: equal to 1 specifies that log2_res_scale_abs_plus1 and
 *   res_scale_sign_flag may be present in the transform unit syntax for pictures referring to the PPS.
 * @chroma_qp_offset_list_enabled_flag: equal to 1 specifies that the cu_chroma_qp_offset_flag may be
 *   present in the transform unit syntax.
 * @diff_cu_chroma_qp_offset_depth: specifies the difference between the luma coding tree block size and
 *   the minimum luma coding block size of coding units that convey cu_chroma_qp_offset_flag.
 * @chroma_qp_offset_list_len_minus1: plus 1 specifies the number of cb_qp_offset_list[] and
 *   cr_qp_offset_list[] syntax elements that are present in the PPS.
 * @cb_qp_offset_list: specify offsets used in the derivation of qp cb.
 * @cr_qp_offset_list: specify offsets used in the derivation of qp cr.
 * @log2_sao_offset_scale_luma: the base 2 logarithm of the scaling parameter that is used to scale sample
 *   adaptive offset (SAO) offset values for luma samples.
 * @log2_sao_offset_scale_chroma: the base 2 logarithm of the scaling parameter that is used to scale SAO
 *   offset values for chroma samples.
 *
 * Defines the GstH265SPSExtensionParams
 */
struct _GstH265PPSExtensionParams {
  guint32 log2_max_transform_skip_block_size_minus2;
  guint8 cross_component_prediction_enabled_flag;
  guint8 chroma_qp_offset_list_enabled_flag;
  guint8 diff_cu_chroma_qp_offset_depth;
  guint8 chroma_qp_offset_list_len_minus1;
  gint8 cb_qp_offset_list[6];
  gint8 cr_qp_offset_list[6];
  guint8 log2_sao_offset_scale_luma;
  guint8 log2_sao_offset_scale_chroma;
};

/**
 * GstH265PPSSccExtensionParams:
 * @pps_curr_pic_ref_enabled_flag: equal to 1 specifies that a picture referring to the PPS may
 *   be included in a reference picture list of a slice of the picture itself.
 * @residual_adaptive_colour_transform_enabled_flag: equal to 1 specifies that an adaptive
 *   colour transform may be applied to the residual in the decoding process.
 * @pps_slice_act_qp_offsets_present_flag: equal to 1 specifies that slice_act_y_qp_offset,
 *   slice_act_cb_qp_offset, slice_act_cr_qp_offset are present in the slice header.
 * @pps_act_y_qp_offset_plus5 @pps_act_cb_qp_offset_plus5 @pps_act_cr_qp_offset_plus3:
 *   are used to determine the offsets that are applied to the quantization parameter values
 *   qp derived in clause 8.6.2 for the luma, Cb and Cr components, respectively, when
 *   tu_residual_act_flag[ xTbY ][ yTbY ] is equal to 1.
 * @pps_palette_predictor_initializers_present_flag: equal to 1 specifies that the palette
 *   predictor initializers used for the pictures referring to the PPS are derived based on
 *   the palette predictor initializers specified by the PPS.
 * @pps_num_palette_predictor_initializer: specifies the number of entries in the picture
 *   palette predictor initializer.
 * @monochrome_palette_flag: equal to 1 specifies that the pictures that refer to this PPS
 *   are monochrome. Equal to 0 specifies that the pictures that refer to this PPS have
 *   multiple components.
 * @luma_bit_depth_entry_minus8: plus 8 specifies the bit depth of the luma component of the
 *   entries of the palette predictor initializer.
 * @chroma_bit_depth_entry_minus8: plus 8 specifies the bit depth of the chroma components of
 *   the entries of the palette predictor initializer.
 * @pps_palette_predictor_initializer: specifies the value of the comp-th component of the
 *   i-th palette entry in the PPS that is used to initialize the array PredictorPaletteEntries.
 * Defines the _GstH265PPSSccExtensionParams
 *
 * Since: 1.18
 */
struct _GstH265PPSSccExtensionParams {
  guint8 pps_curr_pic_ref_enabled_flag;
  guint8 residual_adaptive_colour_transform_enabled_flag;
  guint8 pps_slice_act_qp_offsets_present_flag;
  guint8 pps_act_y_qp_offset_plus5;
  guint8 pps_act_cb_qp_offset_plus5;
  guint8 pps_act_cr_qp_offset_plus3;
  guint8 pps_palette_predictor_initializers_present_flag;
  guint8 pps_num_palette_predictor_initializer;
  guint8 monochrome_palette_flag;
  guint8 luma_bit_depth_entry_minus8;
  guint32 chroma_bit_depth_entry_minus8;
  guint32 pps_palette_predictor_initializer[3][128];
};

/**
 * GstH265ScalingList:
 * @scaling_list_dc_coef_minus8_16x16: this plus 8 specifies the DC
 *   Coefficient values for 16x16 scaling list
 * @scaling_list_dc_coef_minus8_32x32: this plus 8 specifies the DC
 *   Coefficient values for 32x32 scaling list
 * @scaling_lists_4x4: 4x4 scaling list
 * @scaling_lists_8x8: 8x8 scaling list
 * @scaling_lists_16x16: 16x16 scaling list
 * @guint8 scaling_lists_32x32: 32x32 scaling list
 *
 * Defines the GstH265ScalingList
 */
struct _GstH265ScalingList {

  gint16 scaling_list_dc_coef_minus8_16x16[6];
  gint16 scaling_list_dc_coef_minus8_32x32[2];

  guint8 scaling_lists_4x4 [6][16];
  guint8 scaling_lists_8x8 [6][64];
  guint8 scaling_lists_16x16 [6][64];
  guint8 scaling_lists_32x32 [2][64];
};

/**
 * GstH265SPS:
 * @id: The ID of the sequence parameter set
 * @profile_idc: indicate the profile to which the coded video sequence conforms
 *
 * H265 Sequence Parameter Set (SPS)
 */
struct _GstH265SPS
{
  guint8 id;

  GstH265VPS *vps;

  guint8 max_sub_layers_minus1;
  guint8 temporal_id_nesting_flag;

  GstH265ProfileTierLevel profile_tier_level;

  guint8 chroma_format_idc;
  guint8 separate_colour_plane_flag;
  guint16 pic_width_in_luma_samples;
  guint16 pic_height_in_luma_samples;

  guint8 conformance_window_flag;
  /* if conformance_window_flag */
  guint32 conf_win_left_offset;
  guint32 conf_win_right_offset;
  guint32 conf_win_top_offset;
  guint32 conf_win_bottom_offset;

  guint8 bit_depth_luma_minus8;
  guint8 bit_depth_chroma_minus8;
  guint8 log2_max_pic_order_cnt_lsb_minus4;

  guint8 sub_layer_ordering_info_present_flag;
  guint8 max_dec_pic_buffering_minus1[GST_H265_MAX_SUB_LAYERS];
  guint8 max_num_reorder_pics[GST_H265_MAX_SUB_LAYERS];
  guint8 max_latency_increase_plus1[GST_H265_MAX_SUB_LAYERS];

  guint8 log2_min_luma_coding_block_size_minus3;
  guint8 log2_diff_max_min_luma_coding_block_size;
  guint8 log2_min_transform_block_size_minus2;
  guint8 log2_diff_max_min_transform_block_size;
  guint8 max_transform_hierarchy_depth_inter;
  guint8 max_transform_hierarchy_depth_intra;

  guint8 scaling_list_enabled_flag;
  /* if scaling_list_enabled_flag */
  guint8 scaling_list_data_present_flag;

  GstH265ScalingList scaling_list;

  guint8 amp_enabled_flag;
  guint8 sample_adaptive_offset_enabled_flag;
  guint8 pcm_enabled_flag;
  /* if pcm_enabled_flag */
  guint8 pcm_sample_bit_depth_luma_minus1;
  guint8 pcm_sample_bit_depth_chroma_minus1;
  guint8 log2_min_pcm_luma_coding_block_size_minus3;
  guint8 log2_diff_max_min_pcm_luma_coding_block_size;
  guint8 pcm_loop_filter_disabled_flag;

  guint8 num_short_term_ref_pic_sets;
  GstH265ShortTermRefPicSet short_term_ref_pic_set[65];

  guint8 long_term_ref_pics_present_flag;
  /* if long_term_ref_pics_present_flag */
  guint8 num_long_term_ref_pics_sps;
  guint16 lt_ref_pic_poc_lsb_sps[32];
  guint8 used_by_curr_pic_lt_sps_flag[32];

  guint8 temporal_mvp_enabled_flag;
  guint8 strong_intra_smoothing_enabled_flag;
  guint8 vui_parameters_present_flag;

  /* if vui_parameters_present_flat */
  GstH265VUIParams vui_params;

  guint8 sps_extension_flag;

  /* if sps_extension_present_flag */
  guint8 sps_range_extension_flag;
  guint8 sps_multilayer_extension_flag;
  guint8 sps_3d_extension_flag;
  guint8 sps_scc_extension_flag;
  guint8 sps_extension_4bits;

  /* if sps_range_extension_flag */
  GstH265SPSExtensionParams sps_extnsion_params;
  /* if sps_scc_extension_flag */
  GstH265SPSSccExtensionParams sps_scc_extension_params;

  /* calculated values */
  guint8 chroma_array_type;
  gint width, height;
  gint crop_rect_width, crop_rect_height;
  gint crop_rect_x, crop_rect_y;
  gint fps_num, fps_den;
  gboolean valid;
};

/**
 * GstH265PPS:
 *
 * H265 Picture Parameter Set
 */
struct _GstH265PPS
{
  guint id;

  GstH265SPS *sps;

  guint8 dependent_slice_segments_enabled_flag;
  guint8 output_flag_present_flag;
  guint8 num_extra_slice_header_bits;
  guint8 sign_data_hiding_enabled_flag;
  guint8 cabac_init_present_flag;
  guint8 num_ref_idx_l0_default_active_minus1;
  guint8 num_ref_idx_l1_default_active_minus1;
  gint8 init_qp_minus26;
  guint8 constrained_intra_pred_flag;
  guint8 transform_skip_enabled_flag;
  guint8 cu_qp_delta_enabled_flag;
  /*if cu_qp_delta_enabled_flag */
  guint8 diff_cu_qp_delta_depth;

  gint8 cb_qp_offset;
  gint8 cr_qp_offset;
  guint8 slice_chroma_qp_offsets_present_flag;
  guint8 weighted_pred_flag;
  guint8 weighted_bipred_flag;
  guint8 transquant_bypass_enabled_flag;
  guint8 tiles_enabled_flag;
  guint8 entropy_coding_sync_enabled_flag;

  guint8 num_tile_columns_minus1;
  guint8 num_tile_rows_minus1;
  guint8 uniform_spacing_flag;
  guint32 column_width_minus1[20];
  guint32 row_height_minus1[22];
  guint8 loop_filter_across_tiles_enabled_flag;

  guint8 loop_filter_across_slices_enabled_flag;
  guint8 deblocking_filter_control_present_flag;
  guint8 deblocking_filter_override_enabled_flag;
  guint8 deblocking_filter_disabled_flag;
  gint8 beta_offset_div2;
  gint8 tc_offset_div2;

  guint8 scaling_list_data_present_flag;

  GstH265ScalingList scaling_list;

  guint8 lists_modification_present_flag;
  guint8 log2_parallel_merge_level_minus2;
  guint8 slice_segment_header_extension_present_flag;

  guint8 pps_extension_flag;

  /* if pps_extension_flag*/
  guint8 pps_range_extension_flag;
  guint8 pps_multilayer_extension_flag;
  guint8 pps_3d_extension_flag;
  guint8 pps_scc_extension_flag;
  guint8 pps_extension_4bits;

  /* if pps_range_extension_flag*/
  GstH265PPSExtensionParams pps_extension_params;
  /* if pps_scc_extension_flag*/
  GstH265PPSSccExtensionParams pps_scc_extension_params;

  /* calculated values */
  guint32 PicWidthInCtbsY;
  guint32 PicHeightInCtbsY;
  gboolean valid;
};

struct _GstH265RefPicListModification
{
  guint8 ref_pic_list_modification_flag_l0;
  guint32 list_entry_l0[15];
  guint8 ref_pic_list_modification_flag_l1;
  guint32 list_entry_l1[15];
};

struct _GstH265PredWeightTable
{
  guint8 luma_log2_weight_denom;
  gint8 delta_chroma_log2_weight_denom;

  guint8 luma_weight_l0_flag[15];
  guint8  chroma_weight_l0_flag[15];
  gint8 delta_luma_weight_l0[15];
  gint8 luma_offset_l0[15];
  gint8 delta_chroma_weight_l0 [15][2];
  gint16 delta_chroma_offset_l0 [15][2];

  guint8 luma_weight_l1_flag[15];
  guint8 chroma_weight_l1_flag[15];
  gint8 delta_luma_weight_l1[15];
  gint8 luma_offset_l1[15];
  gint8 delta_chroma_weight_l1[15][2];
  gint16 delta_chroma_offset_l1[15][2];
};

/**
 * GstH265SliceHdr:
 * @first_slice_segment_in_pic_flag: equal to 1 if this slice segment is
 *   the first slice segment of the picture in decoding order
 * @no_output_of_prior_pics_flag: affects the output of previously-decoded pictures
 *   in the decoded picture buffer after the decoding of an IDR or a BLA picture
 *   that is not the first picture in the bitstream as specified in Annex C
 * @pps: a #GstH265PPS
 * @dependent_slice_segment_flag: equal to 1 if the value of each slice segment header
 *   syntax element that is not present is inferred to be equal to the value of corresponding
 *   slice segment header syntax element in the slice header.
 * @segment_address: the address of the first CTB in the slice segment
 * @type: slice type (B, P, or I)
 * @pic_output_flag: affects the decoded picture output and removal processes
 *   as specified in Annex C.
 * @colour_plane_id: specifies the colour plane associated with the current slice RBSP
 *   when separate_colour_plane_flag is equal to 1
 * @pic_order_cnt_lsb: the picture order count modulo MaxPicOrderCntLsb for the current picture
 * @short_term_ref_pic_set_sps_flag: equal to 1 specifies that the short-term RPS
 *   of the current picture is derived based on the active SPS.
 * @short_term_ref_pic_sets: a #GstH265ShortTermRefPicSet structure
 * @short_term_ref_pic_set_idx: the index of st_ref_pic_set syntax structure
 *   that is used for derivation of the short-term RPS of the current picture.
 * @num_long_term_sps: the number of entries in the long-term RPS of current picture
 *   that are derived based on the syntax in active SPS.
 * @num_long_term_pics: the number of entries in the long-term RPS of the current picture
 *   that are directly signalled in the slice header.
 * @lt_idx_sps: the index of candidate long-term reference pictures
 *   specified in the active SPS.
 * @poc_lsb_lt: the value of the picture order count modulo MaxPicOrderCntLsb
 *   of the each entry in the long-term RPS of the current picture.
 * @used_by_curr_pic_lt_flag: equal to 0 if the entry in the long-term RPS
 *   of the current picture is not used for reference by the current picture.
 * @delta_poc_msb_present_flag: equal to 1 if i-th delta_poc_msb_cycle_lt[] is present.
 * @delta_poc_msb_cycle_lt: used to determine the value of the most significant bits
 *   of the picture order count value of the i-th entry in the long-term RPS of the current picture.
 * @temporal_mvp_enabled_flag: whether temporal motion vector predictors can be used for inter prediction.
 * @sao_luma_flag: equal to 1 if SAO is enabled for the luma component in the current slice.
 * @sao_chroma_flag: equal to 1 if SAO is enabled for the chroma component in the current slice.
 * @num_ref_idx_active_override_flag: equal to 1 specifies that the syntax elements
 *   num_ref_idx_l0_active_minus1 and num_ref_idx_l1_active_minus1 are present.
 * @num_ref_idx_l0_active_minus1: the maximum reference index for reference picture list 0
 *   that may be used to decode the slice.
 * @num_ref_idx_l1_active_minus1: the maximum reference index for reference picture list 1
 *   that may be used to decode the slice.
 * @ref_pic_list_modification: a #GstH265RefPicListModification
 * @mvd_l1_zero_flag: equal to 1 if the mvd_coding sytanx structure is not parsed
 * @cabac_init_flag: specifies the method for determining the initialization table
 *   used in the initialization process for context variables.
 * @collocated_from_l0_flag: equal to 1 specifies that the collocated picture
 *   used for temporal motion vector prediction is derived from reference picture list 0.
 * @collocated_ref_idx: the reference index of the collocated picture
 *   used for temporal motion vector prediction.
 * @pred_weight_table: a #GstH265PredWeightTable
 * @five_minus_max_num_merge_cand: specifies the maximum number of merging motion vector prediction (MVP)
 *   candidates supported in the slice.
 * @use_integer_mv_flag: equal to 1 specifies that the resolution of motion vectors for inter
 *   prediction in the current slice is integer. (Since: 1.18)
 * @qp_delta: specifies the inital value of QPy to be used for the coding blocks in the slice.
 * @cb_qp_offset: a difference to be added to the value of pps_cb_qp_offset.
 * @cr_qp_offset: a difference to be added to the value of pps_cr_qp_offset.
 * @slice_act_y_qp_offset: specify offsets to the quantization parameter values qP derived in
 *   clause 8.6.2 for luma components. (Since: 1.18)
 * @slice_act_cb_qp_offset: specify offsets to the quantization parameter values qP derived in
 *   clause 8.6.2 for Cb components. (Since: 1.18)
 * @slice_act_cr_qp_offset: specify offsets to the quantization parameter values qP derived in
 *   clause 8.6.2 for Cr components. (Since: 1.18)
 * @cu_chroma_qp_offset_enabled_flag: equal to 1 if the cu_chroma_qp_offset_flag
 *   may be present in the transform unit syntax. (Since: 1.18)
 * @deblocking_filter_override_flag: equal to 1 if deblocking paramertes are present in the slice header.
 * @deblocking_filter_disabled_flag: equal to 1 specifies that the operation of
 *   the deblocking filter is not applied for the current slice.
 * @beta_offset_div2: deblocking parameter offset for beta divided by 2 for the current slice.
 * @tc_offset_div2: deblocking parameter offset for tC divided by 2 for the current slice.
 * @loop_filter_across_slices_enabled_flag: equal to 1 specifies that in-loop filtering
 *   operation may be performed across the left and upper boundaries of the current slice.
 * @num_entry_point_offsets: specifies the number of entry_point_offset_minus1 syntax elements
 *   in the slice header.
 * @offset_len_minus1: specifies the length of the entry_point_minus1 syntax elements
 *   in bits.
 * @entry_point_offset_minus1: the entry point offset in bytes.
 * @NumPocTotalCurr: calculated NumPocTotalCurr which is used for
 *   decoding process for reference picture set
 * @header_size: the calculated size of the slice_header\() in bits.
 * @n_emulation_prevention_bytes: number of emulation prevention bytes (EPB)
 *   in this slice_header\()
 * @short_term_ref_pic_set_size: the calculated size of short_term_ref_pic_set\()
 *   in bits. (Since: 1.18)
 */
struct _GstH265SliceHdr
{
  guint8 first_slice_segment_in_pic_flag;
  guint8 no_output_of_prior_pics_flag;

  GstH265PPS *pps;

  guint8 dependent_slice_segment_flag;
  guint32 segment_address;

  guint8 type;

  guint8 pic_output_flag;
  guint8 colour_plane_id;
  guint16 pic_order_cnt_lsb;

  guint8  short_term_ref_pic_set_sps_flag;
  GstH265ShortTermRefPicSet short_term_ref_pic_sets;
  guint8 short_term_ref_pic_set_idx;

  guint8 num_long_term_sps;
  guint8 num_long_term_pics;
  guint8 lt_idx_sps[16];
  guint32 poc_lsb_lt[16];
  guint8 used_by_curr_pic_lt_flag[16];
  guint8 delta_poc_msb_present_flag[16];
  guint32 delta_poc_msb_cycle_lt[16];

  guint8 temporal_mvp_enabled_flag;
  guint8 sao_luma_flag;
  guint8 sao_chroma_flag;
  guint8 num_ref_idx_active_override_flag;
  guint8 num_ref_idx_l0_active_minus1;
  guint8 num_ref_idx_l1_active_minus1;

  GstH265RefPicListModification ref_pic_list_modification;

  guint8 mvd_l1_zero_flag;
  guint8 cabac_init_flag;
  guint8 collocated_from_l0_flag;
  guint8 collocated_ref_idx;

  GstH265PredWeightTable pred_weight_table;

  guint8 five_minus_max_num_merge_cand;
  guint8 use_integer_mv_flag;

  gint8 qp_delta;
  gint8 cb_qp_offset;
  gint8 cr_qp_offset;
  gint8 slice_act_y_qp_offset;
  gint8 slice_act_cb_qp_offset;
  gint8 slice_act_cr_qp_offset;

  guint8 cu_chroma_qp_offset_enabled_flag;

  guint8 deblocking_filter_override_flag;
  guint8 deblocking_filter_disabled_flag;
  gint8 beta_offset_div2;
  gint8 tc_offset_div2;

  guint8 loop_filter_across_slices_enabled_flag;

  guint32 num_entry_point_offsets;
  guint8 offset_len_minus1;
  guint32 *entry_point_offset_minus1;

  /* calculated values */

  gint NumPocTotalCurr;
  /* Size of the slice_header() in bits */
  guint header_size;
  /* Number of emulation prevention bytes (EPB) in this slice_header() */
  guint n_emulation_prevention_bytes;

  /* Size of short_term_ref_pic_set() in bits */
  guint short_term_ref_pic_set_size;
};

struct _GstH265PicTiming
{
  guint8 pic_struct;
  guint8 source_scan_type;
  guint8 duplicate_flag;

  guint8 au_cpb_removal_delay_minus1;
  guint8 pic_dpb_output_delay;
  guint8 pic_dpb_output_du_delay;
  guint32 num_decoding_units_minus1;
  guint8 du_common_cpb_removal_delay_flag;
  guint8 du_common_cpb_removal_delay_increment_minus1;
  guint32 *num_nalus_in_du_minus1;
  guint8 *du_cpb_removal_delay_increment_minus1;
};

struct _GstH265BufferingPeriod
{
  GstH265SPS *sps;

  guint8 irap_cpb_params_present_flag;
  guint8 cpb_delay_offset;
  guint8 dpb_delay_offset;
  guint8 concatenation_flag;
  guint8 au_cpb_removal_delay_delta_minus1;

  /* seq->vui_parameters->nal_hrd_parameters_present_flag */
  guint8 nal_initial_cpb_removal_delay[32];
  guint8 nal_initial_cpb_removal_offset[32];
  guint8 nal_initial_alt_cpb_removal_delay[32];
  guint8 nal_initial_alt_cpb_removal_offset [32];

  /* seq->vui_parameters->vcl_hrd_parameters_present_flag */
  guint8 vcl_initial_cpb_removal_delay[32];
  guint8 vcl_initial_cpb_removal_offset[32];
  guint8 vcl_initial_alt_cpb_removal_delay[32];
  guint8 vcl_initial_alt_cpb_removal_offset[32];
};

struct _GstH265RecoveryPoint
{
  gint32 recovery_poc_cnt;
  guint8 exact_match_flag;
  guint8 broken_link_flag;
};

/**
 * GstH265RegisteredUserData:
 * The User data registered by Rec. ITU-T T.35 SEI message.
 * @country_code: an itu_t_t35_country_code.
 * @country_code_extension: an itu_t_t35_country_code_extension_byte.
 *   Should be ignored when @country_code is not 0xff
 * @data: the data of itu_t_t35_payload_byte
 *   excluding @country_code and @country_code_extension
 * @size: the size of @data in bytes
 *
 * Since: 1.18
 */
struct _GstH265RegisteredUserData
{
  guint8 country_code;
  guint8 country_code_extension;
  const guint8 *data;
  guint size;
};


/**
 * GstH265TimeCode:
 * The time code SEI message provides time code information similar to that
 * defined by SMPTE ST 12-1 (2014) for field(s) or frame(s) of the current
 * picture.
 *
 * D.2.27
 *
 * Since: 1.16
 */
struct _GstH265TimeCode
{
  guint8 num_clock_ts;
  guint8 clock_timestamp_flag[3];
  guint8 units_field_based_flag[3];
  guint8 counting_type[3];
  guint8 full_timestamp_flag[3];
  guint8 discontinuity_flag[3];
  guint8 cnt_dropped_flag[3];
  guint16 n_frames[3];
  guint8 seconds_flag[3];
  guint8 seconds_value[3];
  guint8 minutes_flag[3];
  guint8 minutes_value[3];
  guint8 hours_flag[3];
  guint8 hours_value[3];
  guint8 time_offset_length[3];
  guint32 time_offset_value[3];
};

/**
 * GstH265MasteringDisplayColourVolume:
 * The colour volume (primaries, white point and luminance range) of display
 * defined by SMPTE ST 2086.
 *
 * D.2.28
 *
 * Since: 1.18
 */
struct _GstH265MasteringDisplayColourVolume
{
  guint16 display_primaries_x[3];
  guint16 display_primaries_y[3];
  guint16 white_point_x;
  guint16 white_point_y;
  guint32 max_display_mastering_luminance;
  guint32 min_display_mastering_luminance;
};

/**
 * GstH265ContentLightLevel:
 * The upper bounds for the nominal target brightness light level
 * as specified in CEA-861.3
 *
 * D.2.35
 *
 * Since: 1.18
 */
struct _GstH265ContentLightLevel
{
  guint16 max_content_light_level;
  guint16 max_pic_average_light_level;
};

struct _GstH265SEIMessage
{
  GstH265SEIPayloadType payloadType;

  union {
    GstH265BufferingPeriod buffering_period;
    GstH265PicTiming pic_timing;
    GstH265RegisteredUserData registered_user_data;
    GstH265RecoveryPoint recovery_point;
    GstH265TimeCode time_code;
    GstH265MasteringDisplayColourVolume mastering_display_colour_volume;
    GstH265ContentLightLevel content_light_level;
    /* ... could implement more */
  } payload;
};

/**
 * GstH265Parser:
 *
 * H265 NAL Parser (opaque structure).
 */
struct _GstH265Parser
{
  /*< private >*/
  GstH265VPS vps[GST_H265_MAX_VPS_COUNT];
  GstH265SPS sps[GST_H265_MAX_SPS_COUNT];
  GstH265PPS pps[GST_H265_MAX_PPS_COUNT];
  GstH265VPS *last_vps;
  GstH265SPS *last_sps;
  GstH265PPS *last_pps;
};

GST_CODEC_PARSERS_API
GstH265Parser *     gst_h265_parser_new               (void);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parser_identify_nalu      (GstH265Parser  * parser,
                                                        const guint8   * data,
                                                        guint            offset,
                                                        gsize            size,
                                                        GstH265NalUnit * nalu);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parser_identify_nalu_unchecked (GstH265Parser * parser,
                                                        const guint8   * data,
                                                        guint            offset,
                                                        gsize            size,
                                                        GstH265NalUnit * nalu);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parser_identify_nalu_hevc (GstH265Parser  * parser,
                                                        const guint8   * data,
                                                        guint            offset,
                                                        gsize            size,
                                                        guint8           nal_length_size,
                                                        GstH265NalUnit * nalu);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parser_parse_nal       (GstH265Parser   * parser,
                                                     GstH265NalUnit  * nalu);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parser_parse_slice_hdr (GstH265Parser   * parser,
                                                     GstH265NalUnit  * nalu,
                                                     GstH265SliceHdr * slice);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parser_parse_vps       (GstH265Parser   * parser,
                                                     GstH265NalUnit  * nalu,
                                                     GstH265VPS      * vps);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parser_parse_sps       (GstH265Parser   * parser,
                                                     GstH265NalUnit  * nalu,
                                                     GstH265SPS      * sps,
                                                     gboolean          parse_vui_params);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parser_parse_pps       (GstH265Parser   * parser,
                                                     GstH265NalUnit  * nalu,
                                                     GstH265PPS      * pps);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parser_parse_sei       (GstH265Parser   * parser,
                                                     GstH265NalUnit  * nalu,
                                                     GArray **messages);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parser_update_vps      (GstH265Parser   * parser,
                                                     GstH265VPS      * vps);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parser_update_sps      (GstH265Parser   * parser,
                                                     GstH265SPS      * sps);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parser_update_pps      (GstH265Parser   * parser,
                                                     GstH265PPS      * pps);

GST_CODEC_PARSERS_API
void                gst_h265_parser_free            (GstH265Parser  * parser);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parse_vps              (GstH265NalUnit * nalu,
                                                     GstH265VPS     * vps);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parse_sps              (GstH265Parser  * parser,
                                                     GstH265NalUnit * nalu,
                                                     GstH265SPS     * sps,
                                                     gboolean         parse_vui_params);

GST_CODEC_PARSERS_API
GstH265ParserResult gst_h265_parse_pps              (GstH265Parser  * parser,
                                                     GstH265NalUnit * nalu,
                                                     GstH265PPS     * pps);

GST_CODEC_PARSERS_API
gboolean            gst_h265_slice_hdr_copy (GstH265SliceHdr       * dst_slice,
                                             const GstH265SliceHdr * src_slice);

GST_CODEC_PARSERS_API
void                gst_h265_slice_hdr_free (GstH265SliceHdr * slice_hdr);

GST_CODEC_PARSERS_API
gboolean            gst_h265_sei_copy       (GstH265SEIMessage       * dest_sei,
                                             const GstH265SEIMessage * src_sei);

GST_CODEC_PARSERS_API
void                gst_h265_sei_free       (GstH265SEIMessage * sei);

GST_CODEC_PARSERS_API
void    gst_h265_quant_matrix_4x4_get_zigzag_from_raster (guint8 out_quant[16],
                                                          const guint8 quant[16]);

GST_CODEC_PARSERS_API
void    gst_h265_quant_matrix_4x4_get_raster_from_zigzag (guint8 out_quant[16],
                                                          const guint8 quant[16]);

GST_CODEC_PARSERS_API
void    gst_h265_quant_matrix_8x8_get_zigzag_from_raster (guint8 out_quant[64],
                                                          const guint8 quant[64]);

GST_CODEC_PARSERS_API
void    gst_h265_quant_matrix_8x8_get_raster_from_zigzag (guint8 out_quant[64],
                                                          const guint8 quant[64]);

#define gst_h265_quant_matrix_16x16_get_zigzag_from_raster \
        gst_h265_quant_matrix_8x8_get_zigzag_from_raster
#define gst_h265_quant_matrix_16x16_get_raster_from_zigzag \
        gst_h265_quant_matrix_8x8_get_raster_from_zigzag
#define gst_h265_quant_matrix_32x32_get_zigzag_from_raster \
        gst_h265_quant_matrix_8x8_get_zigzag_from_raster
#define gst_h265_quant_matrix_32x32_get_raster_from_zigzag \
        gst_h265_quant_matrix_8x8_get_raster_from_zigzag

GST_CODEC_PARSERS_API
void    gst_h265_quant_matrix_4x4_get_uprightdiagonal_from_raster (guint8 out_quant[16],
                                                          const guint8 quant[16]);

GST_CODEC_PARSERS_API
void    gst_h265_quant_matrix_4x4_get_raster_from_uprightdiagonal (guint8 out_quant[16],
                                                          const guint8 quant[16]);

GST_CODEC_PARSERS_API
void    gst_h265_quant_matrix_8x8_get_uprightdiagonal_from_raster (guint8 out_quant[64],
                                                          const guint8 quant[64]);

GST_CODEC_PARSERS_API
void    gst_h265_quant_matrix_8x8_get_raster_from_uprightdiagonal (guint8 out_quant[64],
                                                          const guint8 quant[64]);

#define gst_h265_quant_matrix_16x16_get_uprightdiagonal_from_raster \
        gst_h265_quant_matrix_8x8_get_uprightdiagonal_from_raster
#define gst_h265_quant_matrix_16x16_get_raster_from_uprightdiagonal\
        gst_h265_quant_matrix_8x8_get_raster_from_uprightdiagonal
#define gst_h265_quant_matrix_32x32_get_uprightdiagonal_from_raster \
        gst_h265_quant_matrix_8x8_get_uprightdiagonal_from_raster
#define gst_h265_quant_matrix_32x32_get_raster_from_uprightdiagonal\
        gst_h265_quant_matrix_8x8_get_raster_from_uprightdiagonal

GST_CODEC_PARSERS_API
GstH265Profile gst_h265_profile_tier_level_get_profile (const GstH265ProfileTierLevel * ptl);

GST_CODEC_PARSERS_API
const gchar * gst_h265_profile_to_string (GstH265Profile profile);

GST_CODEC_PARSERS_API
GstH265Profile gst_h265_profile_from_string (const gchar * string);

GST_CODEC_PARSERS_API
GstMemory * gst_h265_create_sei_memory (guint8 layer_id,
                                        guint8 temporal_id_plus1,
                                        guint8 start_code_prefix_length,
                                        GArray * messages);

GST_CODEC_PARSERS_API
GstMemory * gst_h265_create_sei_memory_hevc (guint8 layer_id,
                                             guint8 temporal_id_plus1,
                                             guint8 nal_length_size,
                                             GArray * messages);

GST_CODEC_PARSERS_API
GstBuffer * gst_h265_parser_insert_sei (GstH265Parser * parser,
                                        GstBuffer * au,
                                        GstMemory * sei);

GST_CODEC_PARSERS_API
GstBuffer * gst_h265_parser_insert_sei_hevc (GstH265Parser * parser,
                                             guint8 nal_length_size,
                                             GstBuffer * au,
                                             GstMemory * sei);

GST_CODEC_PARSERS_API
GstH265Profile gst_h265_get_profile_from_sps (GstH265SPS * sps);

G_END_DECLS
#endif