h266.h

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#pragma once
 
#include <stdbool.h>
#include <stdint.h>
 
#include <slice99.h>
 
#include <smolrtsp/priv/compiler_attrs.h>
 
#define SMOLRTSP_H266_NAL_HEADER_SIZE sizeof(uint16_t)
 
#define SMOLRTSP_H266_FU_HEADER_SIZE                                           \
    (/* payload-hdr */ sizeof(uint16_t) + /* fu-header */ sizeof(uint8_t))
 
typedef struct {
    bool forbidden_zero_bit;
 
    bool nuh_reserved_zero_bit;
 
    uint8_t nuh_layer_id;
 
    uint8_t unit_type;
 
    uint8_t nuh_temporal_id_plus1;
} SmolRTSP_H266NalHeader;
 
typedef struct {
    SmolRTSP_H266NalHeader header;
 
    U8Slice99 payload;
} SmolRTSP_H266NalUnit;
 
SmolRTSP_H266NalHeader SmolRTSP_H266NalHeader_parse(
    uint8_t bytes[restrict static 2]) SMOLRTSP_PRIV_MUST_USE;
 
uint16_t SmolRTSP_H266NalHeader_serialize(SmolRTSP_H266NalHeader self)
    SMOLRTSP_PRIV_MUST_USE;
 
bool SmolRTSP_H266NalHeader_is_vps(SmolRTSP_H266NalHeader self)
    SMOLRTSP_PRIV_MUST_USE;
 
bool SmolRTSP_H266NalHeader_is_sps(SmolRTSP_H266NalHeader self)
    SMOLRTSP_PRIV_MUST_USE;
 
bool SmolRTSP_H266NalHeader_is_pps(SmolRTSP_H266NalHeader self)
    SMOLRTSP_PRIV_MUST_USE;
 
bool SmolRTSP_H266NalHeader_is_coded_slice_idr(SmolRTSP_H266NalHeader self)
    SMOLRTSP_PRIV_MUST_USE;
 
bool SmolRTSP_H266NalHeader_is_coded_slice_non_idr(SmolRTSP_H266NalHeader self)
    SMOLRTSP_PRIV_MUST_USE;
 
void SmolRTSP_H266NalHeader_write_fu_header(
    SmolRTSP_H266NalHeader self, uint8_t buffer[restrict],
    bool is_first_fragment, bool is_last_fragment);
 
/* --- VVC NAL unit types (H.266 spec §7.4.2.2 Table 5) ---------------- */
 
#define SMOLRTSP_H266_NAL_UNIT_TRAIL_NUT 0
 
#define SMOLRTSP_H266_NAL_UNIT_STSA_NUT 1
 
#define SMOLRTSP_H266_NAL_UNIT_RADL_NUT 2
 
#define SMOLRTSP_H266_NAL_UNIT_RASL_NUT 3
 
#define SMOLRTSP_H266_NAL_UNIT_IDR_W_RADL 7
 
#define SMOLRTSP_H266_NAL_UNIT_IDR_N_LP 8
 
#define SMOLRTSP_H266_NAL_UNIT_CRA_NUT 9
 
#define SMOLRTSP_H266_NAL_UNIT_GDR_NUT 10
 
#define SMOLRTSP_H266_NAL_UNIT_OPI_NUT 12
 
#define SMOLRTSP_H266_NAL_UNIT_DCI_NUT 13
 
#define SMOLRTSP_H266_NAL_UNIT_VPS_NUT 14
 
#define SMOLRTSP_H266_NAL_UNIT_SPS_NUT 15
 
#define SMOLRTSP_H266_NAL_UNIT_PPS_NUT 16
 
#define SMOLRTSP_H266_NAL_UNIT_PREFIX_APS_NUT 17
 
#define SMOLRTSP_H266_NAL_UNIT_SUFFIX_APS_NUT 18
 
#define SMOLRTSP_H266_NAL_UNIT_PH_NUT 19
 
#define SMOLRTSP_H266_NAL_UNIT_AUD_NUT 20
 
#define SMOLRTSP_H266_NAL_UNIT_EOS_NUT 21
 
#define SMOLRTSP_H266_NAL_UNIT_EOB_NUT 22
 
#define SMOLRTSP_H266_NAL_UNIT_PREFIX_SEI_NUT 23
 
#define SMOLRTSP_H266_NAL_UNIT_SUFFIX_SEI_NUT 24
 
#define SMOLRTSP_H266_NAL_UNIT_FD_NUT 25
 
#define SMOLRTSP_H266_NAL_UNIT_AP 28
 
#define SMOLRTSP_H266_NAL_UNIT_FU 29