| /* |
| * 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_RSV_IRAP_VCL22 = 22, |
| HEVC_NAL_RSV_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 */ |
