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/*
* 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_H2645_SEI_H
#define AVCODEC_H2645_SEI_H
#include <stdint.h>
#include "libavutil/buffer.h"
#include "libavutil/frame.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_id.h"
#include "get_bits.h"
#include "sei.h"
typedef struct H2645SEIA53Caption {
AVBufferRef *buf_ref;
} H2645SEIA53Caption;
typedef struct H264SEIAFD {
int present;
uint8_t active_format_description;
} H264SEIAFD;
typedef struct HEVCSEIDynamicHDRPlus {
AVBufferRef *info;
} HEVCSEIDynamicHDRPlus;
typedef struct HEVCSEIDynamicHDRVivid {
AVBufferRef *info;
} HEVCSEIDynamicHDRVivid;
typedef struct H2645SEIUnregistered {
AVBufferRef **buf_ref;
unsigned nb_buf_ref;
int x264_build; //< H.264 only
} H2645SEIUnregistered;
typedef struct H2645SEIFramePacking {
int present;
int arrangement_id;
int arrangement_cancel_flag; ///< is previous arrangement canceled, -1 if never received (currently H.264 only)
int arrangement_type;
int arrangement_repetition_period;
int content_interpretation_type;
int quincunx_sampling_flag;
int current_frame_is_frame0_flag;
} H2645SEIFramePacking;
typedef struct H2645SEIDisplayOrientation {
int present;
int anticlockwise_rotation;
int hflip, vflip;
} H2645SEIDisplayOrientation;
typedef struct H2645SEIAlternativeTransfer {
int present;
int preferred_transfer_characteristics;
} H2645SEIAlternativeTransfer;
typedef struct H2645SEIFilmGrainCharacteristics {
int present;
int model_id;
int separate_colour_description_present_flag;
int bit_depth_luma;
int bit_depth_chroma;
int full_range;
int color_primaries;
int transfer_characteristics;
int matrix_coeffs;
int blending_mode_id;
int log2_scale_factor;
int comp_model_present_flag[3];
uint16_t num_intensity_intervals[3];
uint8_t num_model_values[3];
uint8_t intensity_interval_lower_bound[3][256];
uint8_t intensity_interval_upper_bound[3][256];
int16_t comp_model_value[3][256][6];
int repetition_period; //< H.264 only
int persistence_flag; //< HEVC only
} H2645SEIFilmGrainCharacteristics;
typedef struct H2645SEI {
H2645SEIA53Caption a53_caption;
H264SEIAFD afd; //< H.264 only
HEVCSEIDynamicHDRPlus dynamic_hdr_plus; //< HEVC only
HEVCSEIDynamicHDRVivid dynamic_hdr_vivid; //< HEVC only
H2645SEIUnregistered unregistered;
H2645SEIFramePacking frame_packing;
H2645SEIDisplayOrientation display_orientation;
H2645SEIAlternativeTransfer alternative_transfer;
H2645SEIFilmGrainCharacteristics film_grain_characteristics;
} H2645SEI;
enum {
FF_H2645_SEI_MESSAGE_HANDLED = 0,
FF_H2645_SEI_MESSAGE_UNHANDLED,
};
/**
* Decode a single SEI message.
*
* This function may either use gb or gbyte to decode the SEI message.
*
* @param[in, out] gb GetBitContext that needs to be at the start
* of the payload (i.e. after the payload_size bytes);
* it needs to be initially byte-aligned
* @param[in, out] gbyte a GetByteContext for the same data as gb
* @return < 0 on error, FF_H2645_SEI_MESSAGE_HANDLED if the SEI message
* has been handled or FF_H2645_SEI_MESSAGE_UNHANDLED if not.
*/
int ff_h2645_sei_message_decode(H2645SEI *h, enum SEIType type,
enum AVCodecID codec_id, GetBitContext *gb,
GetByteContext *gbyte, void *logctx);
int ff_h2645_sei_ctx_replace(H2645SEI *dst, const H2645SEI *src);
#endif /* AVCODEC_H2645_SEI_H */
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