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/*
* HEVC shared code
*
* 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_H
#define AVCODEC_HEVC_H
/**
* Table 7-1 – NAL unit type codes and NAL unit type classes in
* T-REC-H.265-201802
*/
enum HEVCNALUnitType {
HEVC_NAL_TRAIL_N = 0,
HEVC_NAL_TRAIL_R = 1,
HEVC_NAL_TSA_N = 2,
HEVC_NAL_TSA_R = 3,
HEVC_NAL_STSA_N = 4,
HEVC_NAL_STSA_R = 5,
HEVC_NAL_RADL_N = 6,
HEVC_NAL_RADL_R = 7,
HEVC_NAL_RASL_N = 8,
HEVC_NAL_RASL_R = 9,
HEVC_NAL_VCL_N10 = 10,
HEVC_NAL_VCL_R11 = 11,
HEVC_NAL_VCL_N12 = 12,
HEVC_NAL_VCL_R13 = 13,
HEVC_NAL_VCL_N14 = 14,
HEVC_NAL_VCL_R15 = 15,
HEVC_NAL_BLA_W_LP = 16,
HEVC_NAL_BLA_W_RADL = 17,
HEVC_NAL_BLA_N_LP = 18,
HEVC_NAL_IDR_W_RADL = 19,
HEVC_NAL_IDR_N_LP = 20,
HEVC_NAL_CRA_NUT = 21,
HEVC_NAL_IRAP_VCL22 = 22,
HEVC_NAL_IRAP_VCL23 = 23,
HEVC_NAL_RSV_VCL24 = 24,
HEVC_NAL_RSV_VCL25 = 25,
HEVC_NAL_RSV_VCL26 = 26,
HEVC_NAL_RSV_VCL27 = 27,
HEVC_NAL_RSV_VCL28 = 28,
HEVC_NAL_RSV_VCL29 = 29,
HEVC_NAL_RSV_VCL30 = 30,
HEVC_NAL_RSV_VCL31 = 31,
HEVC_NAL_VPS = 32,
HEVC_NAL_SPS = 33,
HEVC_NAL_PPS = 34,
HEVC_NAL_AUD = 35,
HEVC_NAL_EOS_NUT = 36,
HEVC_NAL_EOB_NUT = 37,
HEVC_NAL_FD_NUT = 38,
HEVC_NAL_SEI_PREFIX = 39,
HEVC_NAL_SEI_SUFFIX = 40,
HEVC_NAL_RSV_NVCL41 = 41,
HEVC_NAL_RSV_NVCL42 = 42,
HEVC_NAL_RSV_NVCL43 = 43,
HEVC_NAL_RSV_NVCL44 = 44,
HEVC_NAL_RSV_NVCL45 = 45,
HEVC_NAL_RSV_NVCL46 = 46,
HEVC_NAL_RSV_NVCL47 = 47,
HEVC_NAL_UNSPEC48 = 48,
HEVC_NAL_UNSPEC49 = 49,
HEVC_NAL_UNSPEC50 = 50,
HEVC_NAL_UNSPEC51 = 51,
HEVC_NAL_UNSPEC52 = 52,
HEVC_NAL_UNSPEC53 = 53,
HEVC_NAL_UNSPEC54 = 54,
HEVC_NAL_UNSPEC55 = 55,
HEVC_NAL_UNSPEC56 = 56,
HEVC_NAL_UNSPEC57 = 57,
HEVC_NAL_UNSPEC58 = 58,
HEVC_NAL_UNSPEC59 = 59,
HEVC_NAL_UNSPEC60 = 60,
HEVC_NAL_UNSPEC61 = 61,
HEVC_NAL_UNSPEC62 = 62,
HEVC_NAL_UNSPEC63 = 63,
};
enum HEVCSliceType {
HEVC_SLICE_B = 0,
HEVC_SLICE_P = 1,
HEVC_SLICE_I = 2,
};
enum {
// 7.4.3.1: vps_max_layers_minus1 is in [0, 62].
HEVC_MAX_LAYERS = 63,
// 7.4.3.1: vps_max_sub_layers_minus1 is in [0, 6].
HEVC_MAX_SUB_LAYERS = 7,
// 7.4.3.1: vps_num_layer_sets_minus1 is in [0, 1023].
HEVC_MAX_LAYER_SETS = 1024,
// 7.4.2.1: vps_video_parameter_set_id is u(4).
HEVC_MAX_VPS_COUNT = 16,
// 7.4.3.2.1: sps_seq_parameter_set_id is in [0, 15].
HEVC_MAX_SPS_COUNT = 16,
// 7.4.3.3.1: pps_pic_parameter_set_id is in [0, 63].
HEVC_MAX_PPS_COUNT = 64,
// A.4.2: MaxDpbSize is bounded above by 16.
HEVC_MAX_DPB_SIZE = 16,
// 7.4.3.1: vps_max_dec_pic_buffering_minus1[i] is in [0, MaxDpbSize - 1].
HEVC_MAX_REFS = HEVC_MAX_DPB_SIZE,
// 7.4.3.2.1: num_short_term_ref_pic_sets is in [0, 64].
HEVC_MAX_SHORT_TERM_REF_PIC_SETS = 64,
// 7.4.3.2.1: num_long_term_ref_pics_sps is in [0, 32].
HEVC_MAX_LONG_TERM_REF_PICS = 32,
// A.3: all profiles require that CtbLog2SizeY is in [4, 6].
HEVC_MIN_LOG2_CTB_SIZE = 4,
HEVC_MAX_LOG2_CTB_SIZE = 6,
// E.3.2: cpb_cnt_minus1[i] is in [0, 31].
HEVC_MAX_CPB_CNT = 32,
// A.4.1: in table A.6 the highest level allows a MaxLumaPs of 35 651 584.
HEVC_MAX_LUMA_PS = 35651584,
// A.4.1: pic_width_in_luma_samples and pic_height_in_luma_samples are
// constrained to be not greater than sqrt(MaxLumaPs * 8). Hence height/
// width are bounded above by sqrt(8 * 35651584) = 16888.2 samples.
HEVC_MAX_WIDTH = 16888,
HEVC_MAX_HEIGHT = 16888,
// A.4.1: table A.6 allows at most 22 tile rows for any level.
HEVC_MAX_TILE_ROWS = 22,
// A.4.1: table A.6 allows at most 20 tile columns for any level.
HEVC_MAX_TILE_COLUMNS = 20,
// A.4.2: table A.6 allows at most 600 slice segments for any level.
HEVC_MAX_SLICE_SEGMENTS = 600,
// 7.4.7.1: in the worst case (tiles_enabled_flag and
// entropy_coding_sync_enabled_flag are both set), entry points can be
// placed at the beginning of every Ctb row in every tile, giving an
// upper bound of (num_tile_columns_minus1 + 1) * PicHeightInCtbsY - 1.
// Only a stream with very high resolution and perverse parameters could
// get near that, though, so set a lower limit here with the maximum
// possible value for 4K video (at most 135 16x16 Ctb rows).
HEVC_MAX_ENTRY_POINT_OFFSETS = HEVC_MAX_TILE_COLUMNS * 135,
};
#endif /* AVCODEC_HEVC_H */
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