h264_levels.c File Reference

#include "avcodec.h"
#include "h264_levels.h"

Go to the source code of this file.

Functions
static int	h264_get_br_factor (int profile_idc)
const H264LevelDescriptor *	ff_h264_get_level (int level_idc, int constraint_set3_flag)
const H264LevelDescriptor *	ff_h264_guess_level (int profile_idc, int64_t bitrate, int width, int height, int max_dec_frame_buffering)
	Guess the level of a stream from some parameters. More...

Variables
static const H264LevelDescriptor	h264_levels []
struct {
int   profile_idc
int   cpb_br_vcl_factor
int   cpb_br_nal_factor
}	h264_br_factors []

Function Documentation

static int h264_get_br_factor ( int  profile_idc )

static

Definition at line 67 of file h264_levels.c.

Referenced by ff_h264_guess_level().

const H264LevelDescriptor* ff_h264_get_level	(	int	level_idc,
		int	constraint_set3_flag
	)

Definition at line 78 of file h264_levels.c.

const H264LevelDescriptor* ff_h264_guess_level	(	int	profile_idc,
		int64_t	bitrate,
		int	width,
		int	height,
		int	max_dec_frame_buffering
	)

Guess the level of a stream from some parameters.

Unknown parameters may be zero, in which case they are ignored.

Definition at line 90 of file h264_levels.c.

Referenced by h264_metadata_update_sps(), main(), and vaapi_encode_h264_init_sequence_params().

Variable Documentation

const H264LevelDescriptor h264_levels[]

static

Initial value:

= {
    
    
    
    { "1",   10, 0,     1485,     99,    396,     64,    175,   64, 2,  0 },
    { "1b",  10, 1,     1485,     99,    396,    128,    350,   64, 2,  0 },
    { "1b",   9, 0,     1485,     99,    396,    128,    350,   64, 2,  0 },
    { "1.1", 11, 0,     3000,    396,    900,    192,    500,  128, 2,  0 },
    { "1.2", 12, 0,     6000,    396,   2376,    384,   1000,  128, 2,  0 },
    { "1.3", 13, 0,    11880,    396,   2376,    768,   2000,  128, 2,  0 },
    { "2",   20, 0,    11880,    396,   2376,   2000,   2000,  128, 2,  0 },
    { "2.1", 21, 0,    19800,    792,   4752,   4000,   4000,  256, 2,  0 },
    { "2.2", 22, 0,    20250,   1620,   8100,   4000,   4000,  256, 2,  0 },
    { "3",   30, 0,    40500,   1620,   8100,  10000,  10000,  256, 2, 32 },
    { "3.1", 31, 0,   108000,   3600,  18000,  14000,  14000,  512, 4, 16 },
    { "3.2", 32, 0,   216000,   5120,  20480,  20000,  20000,  512, 4, 16 },
    { "4",   40, 0,   245760,   8192,  32768,  20000,  25000,  512, 4, 16 },
    { "4.1", 41, 0,   245760,   8192,  32768,  50000,  62500,  512, 2, 16 },
    { "4.2", 42, 0,   522240,   8704,  34816,  50000,  62500,  512, 2, 16 },
    { "5",   50, 0,   589824,  22080, 110400, 135000, 135000,  512, 2, 16 },
    { "5.1", 51, 0,   983040,  36864, 184320, 240000, 240000,  512, 2, 16 },
    { "5.2", 52, 0,  2073600,  36864, 184320, 240000, 240000,  512, 2, 16 },
    { "6",   60, 0,  4177920, 139264, 696320, 240000, 240000, 8192, 2, 16 },
    { "6.1", 61, 0,  8355840, 139264, 696320, 480000, 480000, 8192, 2, 16 },
    { "6.2", 62, 0, 16711680, 139264, 696320, 800000, 800000, 8192, 2, 16 },
}

Definition at line 23 of file h264_levels.c.

int profile_idc

Definition at line 52 of file h264_levels.c.

Referenced by ff_h264_decode_seq_parameter_set(), main(), more_rbsp_data_in_pps(), parse_profile_level_id(), and sps().

int cpb_br_vcl_factor

Definition at line 53 of file h264_levels.c.

int cpb_br_nal_factor

Definition at line 54 of file h264_levels.c.

const { ... } h264_br_factors[]

Initial value:

= {
    {  66, 1000, 1200 },
    {  77, 1000, 1200 },
    {  88, 1000, 1200 },
    { 100, 1250, 1500 },
    { 110, 3000, 3600 },
    { 122, 4000, 4800 },
    { 244, 4000, 4800 },
    {  44, 4000, 4800 },
}

Referenced by h264_get_br_factor().