1 /* 2 * H.265 video codec. 3 * Copyright (c) 2013-2014 struktur AG, Dirk Farin <farin@struktur.de> 4 * 5 * This file is part of libde265. 6 * 7 * libde265 is free software: you can redistribute it and/or modify 8 * it under the terms of the GNU Lesser General Public License as 9 * published by the Free Software Foundation, either version 3 of 10 * the License, or (at your option) any later version. 11 * 12 * libde265 is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public License 18 * along with libde265. If not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 #ifndef DE265_NAL_H 22 #define DE265_NAL_H 23 24 #ifdef HAVE_CONFIG_H 25 #include <config.h> 26 #endif 27 28 #include <stdint.h> 29 #ifdef HAVE_STDBOOL_H 30 #include <stdbool.h> 31 #endif 32 33 #include "libde265/bitstream.h" 34 #include "libde265/cabac.h" 35 36 struct nal_header { nal_headernal_header37 nal_header() { 38 nal_unit_type = 0; 39 nuh_layer_id = 0; 40 nuh_temporal_id = 0; 41 } 42 43 void read(bitreader* reader); 44 void write(CABAC_encoder& writer) const; 45 46 void set(int unit_type, int layer_id=0, int temporal_id=0) { 47 nal_unit_type =unit_type; 48 nuh_layer_id =layer_id; 49 nuh_temporal_id=temporal_id; 50 } 51 52 uint8_t nal_unit_type; 53 uint8_t nuh_layer_id; 54 uint8_t nuh_temporal_id; 55 }; 56 57 #define NAL_UNIT_TRAIL_N 0 58 #define NAL_UNIT_TRAIL_R 1 59 #define NAL_UNIT_TSA_N 2 60 #define NAL_UNIT_TSA_R 3 61 #define NAL_UNIT_STSA_N 4 62 #define NAL_UNIT_STSA_R 5 63 #define NAL_UNIT_RADL_N 6 64 #define NAL_UNIT_RADL_R 7 65 #define NAL_UNIT_RASL_N 8 66 #define NAL_UNIT_RASL_R 9 67 #define NAL_UNIT_RESERVED_VCL_N10 10 68 #define NAL_UNIT_RESERVED_VCL_N12 12 69 #define NAL_UNIT_RESERVED_VCL_N14 14 70 #define NAL_UNIT_RESERVED_VCL_R11 11 71 #define NAL_UNIT_RESERVED_VCL_R13 13 72 #define NAL_UNIT_RESERVED_VCL_R15 15 73 #define NAL_UNIT_BLA_W_LP 16 // BLA = broken link access 74 #define NAL_UNIT_BLA_W_RADL 17 75 #define NAL_UNIT_BLA_N_LP 18 76 #define NAL_UNIT_IDR_W_RADL 19 77 #define NAL_UNIT_IDR_N_LP 20 78 #define NAL_UNIT_CRA_NUT 21 // CRA = clean random access 79 #define NAL_UNIT_RESERVED_IRAP_VCL22 22 80 #define NAL_UNIT_RESERVED_IRAP_VCL23 23 81 #define NAL_UNIT_RESERVED_VCL24 24 82 #define NAL_UNIT_RESERVED_VCL25 25 83 #define NAL_UNIT_RESERVED_VCL26 26 84 #define NAL_UNIT_RESERVED_VCL27 27 85 #define NAL_UNIT_RESERVED_VCL28 28 86 #define NAL_UNIT_RESERVED_VCL29 29 87 #define NAL_UNIT_RESERVED_VCL30 30 88 #define NAL_UNIT_RESERVED_VCL31 31 89 #define NAL_UNIT_VPS_NUT 32 90 #define NAL_UNIT_SPS_NUT 33 91 #define NAL_UNIT_PPS_NUT 34 92 #define NAL_UNIT_AUD_NUT 35 93 #define NAL_UNIT_EOS_NUT 36 94 #define NAL_UNIT_EOB_NUT 37 95 #define NAL_UNIT_FD_NUT 38 96 #define NAL_UNIT_PREFIX_SEI_NUT 39 97 #define NAL_UNIT_SUFFIX_SEI_NUT 40 98 #define NAL_UNIT_RESERVED_NVCL41 41 99 #define NAL_UNIT_RESERVED_NVCL42 42 100 #define NAL_UNIT_RESERVED_NVCL43 43 101 #define NAL_UNIT_RESERVED_NVCL44 44 102 #define NAL_UNIT_RESERVED_NVCL45 45 103 #define NAL_UNIT_RESERVED_NVCL46 46 104 #define NAL_UNIT_RESERVED_NVCL47 47 105 106 #define NAL_UNIT_UNDEFINED 255 107 108 bool isIDR(uint8_t unit_type); 109 bool isBLA(uint8_t unit_type); 110 bool isCRA(uint8_t unit_type); 111 bool isRAP(uint8_t unit_type); 112 bool isRASL(uint8_t unit_type); 113 bool isIRAP(uint8_t unit_type); 114 bool isRADL(uint8_t unit_type); 115 bool isReferenceNALU(uint8_t unit_type); 116 bool isSublayerNonReference(uint8_t unit_type); 117 118 const char* get_NAL_name(uint8_t unit_type); 119 isIdrPic(uint8_t nal_unit_type)120inline bool isIdrPic(uint8_t nal_unit_type) { 121 return (nal_unit_type == NAL_UNIT_IDR_W_RADL || 122 nal_unit_type == NAL_UNIT_IDR_N_LP); 123 } 124 isRapPic(uint8_t nal_unit_type)125inline bool isRapPic(uint8_t nal_unit_type) { 126 return nal_unit_type >= 16 && nal_unit_type <= 23; 127 } 128 129 #endif 130