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130 lines
3.9 KiB
130 lines
3.9 KiB
2 years ago
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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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#define NAL_UNIT_TRAIL_N 0
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#define NAL_UNIT_TRAIL_R 1
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#define NAL_UNIT_TSA_N 2
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#define NAL_UNIT_TSA_R 3
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#define NAL_UNIT_STSA_N 4
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#define NAL_UNIT_STSA_R 5
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#define NAL_UNIT_RADL_N 6
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#define NAL_UNIT_RADL_R 7
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#define NAL_UNIT_RASL_N 8
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#define NAL_UNIT_RASL_R 9
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#define NAL_UNIT_RESERVED_VCL_N10 10
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#define NAL_UNIT_RESERVED_VCL_N12 12
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#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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#define NAL_UNIT_RESERVED_VCL_R15 15
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#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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#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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#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
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