Coverage Report

Created: 2022-08-24 06:15

/src/libde265/libde265/nal.h
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/*
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 * H.265 video codec.
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 * Copyright (c) 2013-2014 struktur AG, Dirk Farin <farin@struktur.de>
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 *
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 * This file is part of libde265.
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 *
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 * libde265 is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU Lesser General Public License as
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 * published by the Free Software Foundation, either version 3 of
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 * the License, or (at your option) any later version.
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 *
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 * libde265 is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public License
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 * along with libde265.  If not, see <http://www.gnu.org/licenses/>.
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 */
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#ifndef DE265_NAL_H
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#define DE265_NAL_H
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdint.h>
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#ifdef HAVE_STDBOOL_H
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#include <stdbool.h>
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#endif
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#include "libde265/bitstream.h"
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#include "libde265/cabac.h"
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struct nal_header {
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  nal_header() {
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    nal_unit_type = 0;
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    nuh_layer_id = 0;
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    nuh_temporal_id = 0;
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  }
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  void read(bitreader* reader);
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  void write(CABAC_encoder& writer) const;
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  void set(int unit_type, int layer_id=0, int temporal_id=0) {
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    nal_unit_type  =unit_type;
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    nuh_layer_id   =layer_id;
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    nuh_temporal_id=temporal_id;
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  }
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  uint8_t nal_unit_type;
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  uint8_t nuh_layer_id;
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  uint8_t nuh_temporal_id;
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};
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0
#define NAL_UNIT_TRAIL_N  0
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#define NAL_UNIT_TRAIL_R  1
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0
#define NAL_UNIT_TSA_N    2
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#define NAL_UNIT_TSA_R    3
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0
#define NAL_UNIT_STSA_N   4
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#define NAL_UNIT_STSA_R   5
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0
#define NAL_UNIT_RADL_N   6
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0
#define NAL_UNIT_RADL_R   7
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0
#define NAL_UNIT_RASL_N   8
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0
#define NAL_UNIT_RASL_R   9
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0
#define NAL_UNIT_RESERVED_VCL_N10  10
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0
#define NAL_UNIT_RESERVED_VCL_N12  12
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0
#define NAL_UNIT_RESERVED_VCL_N14  14
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#define NAL_UNIT_RESERVED_VCL_R11  11
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#define NAL_UNIT_RESERVED_VCL_R13  13
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0
#define NAL_UNIT_RESERVED_VCL_R15  15
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0
#define NAL_UNIT_BLA_W_LP   16     // BLA = broken link access
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#define NAL_UNIT_BLA_W_RADL 17
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#define NAL_UNIT_BLA_N_LP   18
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0
#define NAL_UNIT_IDR_W_RADL 19
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#define NAL_UNIT_IDR_N_LP   20
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#define NAL_UNIT_CRA_NUT    21     // CRA = clean random access
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#define NAL_UNIT_RESERVED_IRAP_VCL22 22
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0
#define NAL_UNIT_RESERVED_IRAP_VCL23 23
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#define NAL_UNIT_RESERVED_VCL24     24
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#define NAL_UNIT_RESERVED_VCL25     25
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#define NAL_UNIT_RESERVED_VCL26     26
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#define NAL_UNIT_RESERVED_VCL27     27
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#define NAL_UNIT_RESERVED_VCL28     28
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#define NAL_UNIT_RESERVED_VCL29     29
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#define NAL_UNIT_RESERVED_VCL30     30
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#define NAL_UNIT_RESERVED_VCL31     31
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#define NAL_UNIT_VPS_NUT       32
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#define NAL_UNIT_SPS_NUT       33
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#define NAL_UNIT_PPS_NUT       34
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#define NAL_UNIT_AUD_NUT       35
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#define NAL_UNIT_EOS_NUT       36
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#define NAL_UNIT_EOB_NUT       37
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#define NAL_UNIT_FD_NUT        38
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#define NAL_UNIT_PREFIX_SEI_NUT 39
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#define NAL_UNIT_SUFFIX_SEI_NUT 40
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#define NAL_UNIT_RESERVED_NVCL41     41
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#define NAL_UNIT_RESERVED_NVCL42     42
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#define NAL_UNIT_RESERVED_NVCL43     43
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#define NAL_UNIT_RESERVED_NVCL44     44
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#define NAL_UNIT_RESERVED_NVCL45     45
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#define NAL_UNIT_RESERVED_NVCL46     46
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#define NAL_UNIT_RESERVED_NVCL47     47
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#define NAL_UNIT_UNDEFINED    255
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bool isIDR(uint8_t unit_type);
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bool isBLA(uint8_t unit_type);
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bool isCRA(uint8_t unit_type);
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bool isRAP(uint8_t unit_type);
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bool isRASL(uint8_t unit_type);
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bool isIRAP(uint8_t unit_type);
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bool isRADL(uint8_t unit_type);
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bool isReferenceNALU(uint8_t unit_type);
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bool isSublayerNonReference(uint8_t unit_type);
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const char* get_NAL_name(uint8_t unit_type);
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inline bool isIdrPic(uint8_t nal_unit_type) {
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  return (nal_unit_type == NAL_UNIT_IDR_W_RADL ||
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          nal_unit_type == NAL_UNIT_IDR_N_LP);
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}
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inline bool isRapPic(uint8_t nal_unit_type) {
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  return nal_unit_type >= 16 && nal_unit_type <= 23;
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}
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#endif