| /* |
| * EVC definitions and enums |
| * Copyright (c) 2022 Dawid Kozinski <[email protected]> |
| * |
| * 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_EVC_H |
| #define AVCODEC_EVC_H |
| |
| // The length field that indicates the length in bytes of the following NAL unit is configured to be of 4 bytes |
| #define EVC_NALU_LENGTH_PREFIX_SIZE (4) /* byte */ |
| #define EVC_NALU_HEADER_SIZE (2) /* byte */ |
| |
| /** |
| * @see ISO_IEC_23094-1_2020, 7.4.2.2 NAL unit header semantic |
| * Table 4 - NAL unit type codes and NAL unit type classes |
| */ |
| enum EVCNALUnitType { |
| EVC_NOIDR_NUT = 0, /* Coded slice of a non-IDR picture */ |
| EVC_IDR_NUT = 1, /* Coded slice of an IDR picture */ |
| EVC_RSV_VCL_NUT02 = 2, |
| EVC_RSV_VCL_NUT03 = 3, |
| EVC_RSV_VCL_NUT04 = 4, |
| EVC_RSV_VCL_NUT05 = 5, |
| EVC_RSV_VCL_NUT06 = 6, |
| EVC_RSV_VCL_NUT07 = 7, |
| EVC_RSV_VCL_NUT08 = 8, |
| EVC_RSV_VCL_NUT09 = 9, |
| EVC_RSV_VCL_NUT10 = 10, |
| EVC_RSV_VCL_NUT11 = 11, |
| EVC_RSV_VCL_NUT12 = 12, |
| EVC_RSV_VCL_NUT13 = 13, |
| EVC_RSV_VCL_NUT14 = 14, |
| EVC_RSV_VCL_NUT15 = 15, |
| EVC_RSV_VCL_NUT16 = 16, |
| EVC_RSV_VCL_NUT17 = 17, |
| EVC_RSV_VCL_NUT18 = 18, |
| EVC_RSV_VCL_NUT19 = 19, |
| EVC_RSV_VCL_NUT20 = 20, |
| EVC_RSV_VCL_NUT21 = 21, |
| EVC_RSV_VCL_NUT22 = 22, |
| EVC_RSV_VCL_NUT23 = 23, |
| EVC_SPS_NUT = 24, /* Sequence parameter set */ |
| EVC_PPS_NUT = 25, /* Picture paremeter set */ |
| EVC_APS_NUT = 26, /* Adaptation parameter set */ |
| EVC_FD_NUT = 27, /* Filler data */ |
| EVC_SEI_NUT = 28, /* Supplemental enhancement information */ |
| EVC_RSV_NONVCL29 = 29, |
| EVC_RSV_NONVCL30 = 30, |
| EVC_RSV_NONVCL31 = 31, |
| EVC_RSV_NONVCL32 = 32, |
| EVC_RSV_NONVCL33 = 33, |
| EVC_RSV_NONVCL34 = 34, |
| EVC_RSV_NONVCL35 = 35, |
| EVC_RSV_NONVCL36 = 36, |
| EVC_RSV_NONVCL37 = 37, |
| EVC_RSV_NONVCL38 = 38, |
| EVC_RSV_NONVCL39 = 39, |
| EVC_RSV_NONVCL40 = 40, |
| EVC_RSV_NONVCL41 = 41, |
| EVC_RSV_NONVCL42 = 42, |
| EVC_RSV_NONVCL43 = 43, |
| EVC_RSV_NONVCL44 = 44, |
| EVC_RSV_NONVCL45 = 45, |
| EVC_RSV_NONVCL46 = 46, |
| EVC_RSV_NONVCL47 = 47, |
| EVC_RSV_NONVCL48 = 48, |
| EVC_RSV_NONVCL49 = 49, |
| EVC_RSV_NONVCL50 = 50, |
| EVC_RSV_NONVCL51 = 51, |
| EVC_RSV_NONVCL52 = 52, |
| EVC_RSV_NONVCL53 = 53, |
| EVC_RSV_NONVCL54 = 54, |
| EVC_RSV_NONVCL55 = 55, |
| EVC_UNSPEC_NUT56 = 56, |
| EVC_UNSPEC_NUT57 = 57, |
| EVC_UNSPEC_NUT58 = 58, |
| EVC_UNSPEC_NUT59 = 59, |
| EVC_UNSPEC_NUT60 = 60, |
| EVC_UNSPEC_NUT61 = 61, |
| EVC_UNSPEC_NUT62 = 62 |
| }; |
| |
| // slice type |
| // @see ISO_IEC_23094-1_2020 7.4.5 Slice header semantics |
| // |
| enum EVCSliceType { |
| EVC_SLICE_TYPE_B = 0, |
| EVC_SLICE_TYPE_P = 1, |
| EVC_SLICE_TYPE_I = 2 |
| }; |
| |
| enum { |
| // 7.4.3.1: sps_seq_parameter_set_id is in [0, 15]. |
| EVC_MAX_SPS_COUNT = 16, |
| |
| // 7.4.3.2: pps_pic_parameter_set_id is in [0, 63]. |
| EVC_MAX_PPS_COUNT = 64, |
| |
| // 7.4.3.3: adaptional_parameter_set_id is in [0, 31]. |
| EVC_MAX_APS_COUNT = 32, |
| |
| // 7.4.5: slice header slice_pic_parameter_set_id in [0, 63] |
| EVC_MAX_SH_COUNT = 64, |
| |
| // E.3.2: cpb_cnt_minus1[i] is in [0, 31]. |
| EVC_MAX_CPB_CNT = 32, |
| |
| // A.4.1: in table A.1 the highest level allows a MaxLumaPs of 35 651 584. |
| EVC_MAX_LUMA_PS = 35651584, |
| |
| EVC_MAX_NUM_REF_PICS = 21, |
| |
| EVC_MAX_NUM_RPLS = 64, |
| |
| // 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. |
| EVC_MAX_WIDTH = 16888, |
| EVC_MAX_HEIGHT = 16888, |
| |
| // A.4.1: table A.1 allows at most 22 tile rows for any level. |
| EVC_MAX_TILE_ROWS = 22, |
| // A.4.1: table A.1 allows at most 20 tile columns for any level. |
| EVC_MAX_TILE_COLUMNS = 20, |
| |
| // A.4.1: table A.1 allows at most 600 slice segments for any level. |
| EVC_MAX_SLICE_SEGMENTS = 600, |
| }; |
| |
| #endif // AVCODEC_EVC_H |
