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125 lines
3.5 KiB
C
125 lines
3.5 KiB
C
/*
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* HEVC Supplementary Enhancement Information messages
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* 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
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_HEVC_SEI_H
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#define AVCODEC_HEVC_SEI_H
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#include <stdint.h>
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#include "libavutil/buffer.h"
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#include "libavcodec/get_bits.h"
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#include "libavcodec/h2645_sei.h"
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#include "libavcodec/sei.h"
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#include "hevc.h"
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typedef enum {
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HEVC_SEI_PIC_STRUCT_FRAME_DOUBLING = 7,
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HEVC_SEI_PIC_STRUCT_FRAME_TRIPLING = 8
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} HEVC_SEI_PicStructType;
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typedef struct HEVCSEIPictureHash {
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uint8_t md5[3][16];
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uint8_t is_md5;
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} HEVCSEIPictureHash;
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typedef struct HEVCSEIFramePacking {
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int present;
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int arrangement_type;
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int content_interpretation_type;
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int quincunx_subsampling;
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int current_frame_is_frame0_flag;
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} HEVCSEIFramePacking;
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typedef struct HEVCSEIPictureTiming {
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int picture_struct;
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} HEVCSEIPictureTiming;
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typedef struct HEVCSEIAlternativeTransfer {
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int present;
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int preferred_transfer_characteristics;
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} HEVCSEIAlternativeTransfer;
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typedef struct HEVCSEITimeCode {
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int present;
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uint8_t num_clock_ts;
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uint8_t clock_timestamp_flag[3];
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uint8_t units_field_based_flag[3];
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uint8_t counting_type[3];
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uint8_t full_timestamp_flag[3];
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uint8_t discontinuity_flag[3];
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uint8_t cnt_dropped_flag[3];
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uint16_t n_frames[3];
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uint8_t seconds_value[3];
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uint8_t minutes_value[3];
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uint8_t hours_value[3];
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uint8_t seconds_flag[3];
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uint8_t minutes_flag[3];
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uint8_t hours_flag[3];
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uint8_t time_offset_length[3];
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int32_t time_offset_value[3];
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} HEVCSEITimeCode;
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typedef struct HEVCSEITDRDI {
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uint8_t prec_ref_display_width;
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uint8_t ref_viewing_distance_flag;
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uint8_t prec_ref_viewing_dist;
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uint8_t num_ref_displays;
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uint16_t left_view_id[32];
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uint16_t right_view_id[32];
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uint8_t exponent_ref_display_width[32];
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uint8_t mantissa_ref_display_width[32];
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uint8_t exponent_ref_viewing_distance[32];
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uint8_t mantissa_ref_viewing_distance[32];
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uint8_t additional_shift_present_flag[32];
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int16_t num_sample_shift[32];
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uint8_t three_dimensional_reference_displays_extension_flag;
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} HEVCSEITDRDI;
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typedef struct HEVCSEI {
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H2645SEI common;
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HEVCSEIPictureHash picture_hash;
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HEVCSEIPictureTiming picture_timing;
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int active_seq_parameter_set_id;
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HEVCSEITimeCode timecode;
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HEVCSEITDRDI tdrdi;
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} HEVCSEI;
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struct HEVCParamSets;
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int ff_hevc_decode_nal_sei(GetBitContext *gb, void *logctx, HEVCSEI *s,
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const struct HEVCParamSets *ps, enum HEVCNALUnitType type);
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/**
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* Reset SEI values that are stored on the Context.
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* e.g. Caption data that was extracted during NAL
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* parsing.
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*
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* @param sei HEVCSEI.
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*/
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static inline void ff_hevc_reset_sei(HEVCSEI *sei)
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{
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ff_h2645_sei_reset(&sei->common);
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}
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#endif /* AVCODEC_HEVC_SEI_H */
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