nal.h

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#pragma once
 
#include <compy/nal/h264.h>
#include <compy/nal/h265.h>
 
#include <stdbool.h>
#include <stdint.h>
 
#include <datatype99.h>
#include <slice99.h>
 
#include <compy/priv/compiler_attrs.h>
 
// clang-format off
datatype99(
    Compy_NalHeader,
    (Compy_NalHeader_H264, Compy_H264NalHeader),
    (Compy_NalHeader_H265, Compy_H265NalHeader)
);
// clang-format on
 
uint8_t Compy_NalHeader_unit_type(Compy_NalHeader self) COMPY_PRIV_MUST_USE;
 
size_t Compy_NalHeader_size(Compy_NalHeader self) COMPY_PRIV_MUST_USE;
 
size_t Compy_NalHeader_fu_size(Compy_NalHeader self) COMPY_PRIV_MUST_USE;
 
bool Compy_NalHeader_is_vps(Compy_NalHeader self) COMPY_PRIV_MUST_USE;
 
bool Compy_NalHeader_is_sps(Compy_NalHeader self) COMPY_PRIV_MUST_USE;
 
bool Compy_NalHeader_is_pps(Compy_NalHeader self) COMPY_PRIV_MUST_USE;
 
bool Compy_NalHeader_is_coded_slice_idr(Compy_NalHeader self)
    COMPY_PRIV_MUST_USE;
 
bool Compy_NalHeader_is_coded_slice_non_idr(Compy_NalHeader self)
    COMPY_PRIV_MUST_USE;
 
void Compy_NalHeader_serialize(Compy_NalHeader self, uint8_t buffer[restrict]);
 
void Compy_NalHeader_write_fu_header(
    Compy_NalHeader self, uint8_t buffer[restrict], bool is_first_fragment,
    bool is_last_fragment);
 
typedef struct {
    Compy_NalHeader header;
 
    U8Slice99 payload;
} Compy_NalUnit;
 
uint8_t compy_nal_fu_header(
    bool is_first_fragment, bool is_last_fragment,
    uint8_t unit_type) COMPY_PRIV_MUST_USE;
 
typedef size_t (*Compy_NalStartCodeTester)(U8Slice99 data);
 
Compy_NalStartCodeTester
compy_determine_start_code(U8Slice99 data) COMPY_PRIV_MUST_USE;
 
size_t compy_test_start_code_3b(U8Slice99 data);
 
size_t compy_test_start_code_4b(U8Slice99 data);