H.264 NAL representation. More...

#include <stdbool.h>
#include <stdint.h>
#include <slice99.h>
#include <smolrtsp/priv/compiler_attrs.h>

Include dependency graph for h264.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	SmolRTSP_H264NalHeader
	An H.264 NAL header. More...

struct	SmolRTSP_H264NalUnit
	An H.264 NAL unit. More...

Macros
#define	SMOLRTSP_H264_NAL_HEADER_SIZE sizeof(uint8_t)
	The size of an H.264 NAL header.

#define	SMOLRTSP_H264_FU_HEADER_SIZE (/* fu-identifier / sizeof(uint8_t) + / fu-header */ sizeof(uint8_t))
	The size of an H.264 fragmentation unit (FU) header. More...

#define	SMOLRTSP_H264_NAL_UNIT_UNSPECIFIED 0
	Unspecified.

#define	SMOLRTSP_H264_NAL_UNIT_CODED_SLICE_NON_IDR 1
	Coded slice of a non-IDR picture.

#define	SMOLRTSP_H264_NAL_UNIT_CODED_SLICE_DATA_PARTITION_A 2
	Coded slice data partition A.

#define	SMOLRTSP_H264_NAL_UNIT_CODED_SLICE_DATA_PARTITION_B 3
	Coded slice data partition B.

#define	SMOLRTSP_H264_NAL_UNIT_CODED_SLICE_DATA_PARTITION_C 4
	Coded slice data partition C.

#define	SMOLRTSP_H264_NAL_UNIT_CODED_SLICE_IDR 5
	Coded slice of an IDR picture.

#define	SMOLRTSP_H264_NAL_UNIT_SEI 6
	Supplemental enhancement information (SEI).

#define	SMOLRTSP_H264_NAL_UNIT_SPS 7
	Sequence parameter set.

#define	SMOLRTSP_H264_NAL_UNIT_PPS 8
	Picture parameter set.

#define	SMOLRTSP_H264_NAL_UNIT_AUD 9
	Access unit delimiter.

#define	SMOLRTSP_H264_NAL_UNIT_END_OF_SEQUENCE 10
	End of sequence.

#define	SMOLRTSP_H264_NAL_UNIT_END_OF_STREAM 11
	End of stream.

#define	SMOLRTSP_H264_NAL_UNIT_FILLER 12
	Filler data.

#define	SMOLRTSP_H264_NAL_UNIT_SPS_EXT 13
	Sequence parameter set extension.

#define	SMOLRTSP_H264_NAL_UNIT_PREFIX 14
	Prefix NAL unit.

#define	SMOLRTSP_H264_NAL_UNIT_SUBSET_SPS 15
	Subset sequence parameter set.

#define	SMOLRTSP_H264_NAL_UNIT_DPS 16
	Depth parameter set.

#define	SMOLRTSP_H264_NAL_UNIT_CODED_SLICE_AUX 19
	Coded slice of an auxiliary coded picture without partitioning.

#define	SMOLRTSP_H264_NAL_UNIT_CODED_SLICE_EXT 20
	Coded slice extension.

#define	SMOLRTSP_H264_NAL_UNIT_CODED_SLICE_EXT_DEPTH_VIEW 21
	Coded slice extension for a depth view component or a 3D-AVC texture view component.

Functions
SmolRTSP_H264NalHeader	SmolRTSP_H264NalHeader_parse (uint8_t byte_header) SMOLRTSP_PRIV_MUST_USE
	Parses an H.264 NAL header from `byte_header`.

uint8_t	SmolRTSP_H264NalHeader_serialize (SmolRTSP_H264NalHeader self) SMOLRTSP_PRIV_MUST_USE
	Converts `self` to a single octet representation.

bool	SmolRTSP_H264NalHeader_is_vps (SmolRTSP_H264NalHeader self) SMOLRTSP_PRIV_MUST_USE
	Checks whether `self` is VPS.

bool	SmolRTSP_H264NalHeader_is_sps (SmolRTSP_H264NalHeader self) SMOLRTSP_PRIV_MUST_USE
	Checks whether `self` is SPS.

bool	SmolRTSP_H264NalHeader_is_pps (SmolRTSP_H264NalHeader self) SMOLRTSP_PRIV_MUST_USE
	Checks whether `self` is PPS.

bool	SmolRTSP_H264NalHeader_is_coded_slice_idr (SmolRTSP_H264NalHeader self) SMOLRTSP_PRIV_MUST_USE
	Checks whether `self` is a coded slice IDR.

bool	SmolRTSP_H264NalHeader_is_coded_slice_non_idr (SmolRTSP_H264NalHeader self) SMOLRTSP_PRIV_MUST_USE
	Checks whether `self` is a coded slice non-IDR.

void	SmolRTSP_H264NalHeader_write_fu_header (SmolRTSP_H264NalHeader self, uint8_t buffer[restrict], bool is_first_fragment, bool is_last_fragment)
	Writes a FU header of `self` to `buffer`. More...

Detailed Description

H.264 NAL representation.

See also: H.264 spec: https://www.itu.int/rec/T-REC-H.264.

Macro Definition Documentation

◆ SMOLRTSP_H264_FU_HEADER_SIZE

#define SMOLRTSP_H264_FU_HEADER_SIZE (/* fu-identifier */ sizeof(uint8_t) + /* fu-header */ sizeof(uint8_t))

The size of an H.264 fragmentation unit (FU) header.

See also: https://datatracker.ietf.org/doc/html/rfc6184#section-5.8

Function Documentation

◆ SmolRTSP_H264NalHeader_write_fu_header()

void SmolRTSP_H264NalHeader_write_fu_header	(	SmolRTSP_H264NalHeader	self,
		uint8_t	buffer[restrict],
		bool	is_first_fragment,
		bool	is_last_fragment
	)

Writes a FU header of self to buffer.

Parameters

[in]	self	The header to write.
[out]	buffer	The memory area capable of storing SMOLRTSP_H264_FU_HEADER_SIZE bytes.
[in]	is_first_fragment	The indication of a start of the FU.
[in]	is_last_fragment	The indication of an end of the FU.

See also: https://datatracker.ietf.org/doc/html/rfc6184#section-5.8

Data Structures

Macros

Functions

Detailed Description

Macro Definition Documentation

◆ SMOLRTSP_H264_FU_HEADER_SIZE

Function Documentation

◆ SmolRTSP_H264NalHeader_write_fu_header()