H.264 / AVC / MPEG-4 part10 parameter set decoding. More...

#include <inttypes.h>
#include "libavutil/imgutils.h"
#include "internal.h"
#include "mathops.h"
#include "avcodec.h"
#include "h264data.h"
#include "h264_ps.h"
#include "golomb.h"

Macros
#define	MAX_LOG2_MAX_FRAME_NUM (12 + 4)

#define	MIN_LOG2_MAX_FRAME_NUM 4

#define	EXTENDED_SAR 255

Functions
static void	remove_pps (H264ParamSets *s, int id)

static void	remove_sps (H264ParamSets *s, int id)

static int	decode_hrd_parameters (GetBitContext gb, AVCodecContext avctx, SPS *sps)

static int	decode_vui_parameters (GetBitContext gb, AVCodecContext avctx, SPS *sps)

static int	decode_scaling_list (GetBitContext gb, uint8_t factors, int size, const uint8_t jvt_list, const uint8_t fallback_list)

static int	decode_scaling_matrices (GetBitContext gb, const SPS sps, const PPS pps, int is_sps, uint8_t(scaling_matrix4)[16], uint8_t(*scaling_matrix8)[64])

void	ff_h264_ps_uninit (H264ParamSets *ps)
	Uninit H264 param sets structure. More...

int	ff_h264_decode_seq_parameter_set (GetBitContext gb, AVCodecContext avctx, H264ParamSets *ps, int ignore_truncation)
	Decode SPS. More...

static void	init_dequant8_coeff_table (PPS pps, const SPS sps)

static void	init_dequant4_coeff_table (PPS pps, const SPS sps)

static void	init_dequant_tables (PPS pps, const SPS sps)

static void	build_qp_table (PPS *pps, int t, int index, const int depth)

static int	more_rbsp_data_in_pps (const SPS sps, void logctx)

int	ff_h264_decode_picture_parameter_set (GetBitContext gb, AVCodecContext avctx, H264ParamSets *ps, int bit_length)
	Decode PPS. More...

Variables
static const uint8_t	default_scaling4 [2][16]

static const uint8_t	default_scaling8 [2][64]

static const int	level_max_dpb_mbs [][2]

Detailed Description

H.264 / AVC / MPEG-4 part10 parameter set decoding.

Author: Michael Niedermayer micha.nosp@m.elni.nosp@m.@gmx..nosp@m.at

Definition in file h264_ps.c.

Macro Definition Documentation

◆ MAX_LOG2_MAX_FRAME_NUM

#define MAX_LOG2_MAX_FRAME_NUM (12 + 4)

Definition at line 38 of file h264_ps.c.

Referenced by ff_h264_decode_seq_parameter_set().

◆ MIN_LOG2_MAX_FRAME_NUM

#define MIN_LOG2_MAX_FRAME_NUM 4

Definition at line 39 of file h264_ps.c.

Referenced by ff_h264_decode_seq_parameter_set().

◆ EXTENDED_SAR

#define EXTENDED_SAR 255

Definition at line 41 of file h264_ps.c.

Referenced by decode_vui_parameters().

Function Documentation

◆ remove_pps()

static void remove_pps	(	H264ParamSets *	s,
		int	id
	)

static

Definition at line 89 of file h264_ps.c.

Referenced by ff_h264_decode_picture_parameter_set(), and remove_sps().

◆ remove_sps()

static void remove_sps	(	H264ParamSets *	s,
		int	id
	)

static

Definition at line 94 of file h264_ps.c.

Referenced by ff_h264_decode_seq_parameter_set().

◆ decode_hrd_parameters()

static int decode_hrd_parameters	(	GetBitContext *	gb,
		AVCodecContext *	avctx,
		SPS *	sps
	)

inlinestatic

Definition at line 108 of file h264_ps.c.

Referenced by decode_vui_parameters().

◆ decode_vui_parameters()

static int decode_vui_parameters	(	GetBitContext *	gb,
		AVCodecContext *	avctx,
		SPS *	sps
	)

inlinestatic

Definition at line 134 of file h264_ps.c.

Referenced by ff_h264_decode_seq_parameter_set().

◆ decode_scaling_list()

static int decode_scaling_list	(	GetBitContext *	gb,
		uint8_t *	factors,
		int	size,
		const uint8_t *	jvt_list,
		const uint8_t *	fallback_list
	)

static

Definition at line 252 of file h264_ps.c.

Referenced by decode_scaling_matrices().

◆ decode_scaling_matrices()

static int decode_scaling_matrices	(	GetBitContext *	gb,
		const SPS *	sps,
		const PPS *	pps,
		int	is_sps,
		uint8_t(*)	scaling_matrix4[16],
		uint8_t(*)	scaling_matrix8[64]
	)

static

Definition at line 280 of file h264_ps.c.

Referenced by ff_h264_decode_picture_parameter_set(), and ff_h264_decode_seq_parameter_set().

◆ ff_h264_ps_uninit()

void ff_h264_ps_uninit ( H264ParamSets * ps )

Uninit H264 param sets structure.

Definition at line 317 of file h264_ps.c.

Referenced by h264_close(), h264_decode_end(), and mediacodec_decode_close().

◆ ff_h264_decode_seq_parameter_set()

int ff_h264_decode_seq_parameter_set	(	GetBitContext *	gb,
		AVCodecContext *	avctx,
		H264ParamSets *	ps,
		int	ignore_truncation
	)

Decode SPS.

Definition at line 334 of file h264_ps.c.

Referenced by decode_extradata_ps(), decode_nal_units(), and parse_nal_units().

◆ init_dequant8_coeff_table()

static void init_dequant8_coeff_table	(	PPS *	pps,
		const SPS *	sps
	)

static

Definition at line 630 of file h264_ps.c.

Referenced by init_dequant_tables().

◆ init_dequant4_coeff_table()

static void init_dequant4_coeff_table	(	PPS *	pps,
		const SPS *	sps
	)

static

Definition at line 657 of file h264_ps.c.

Referenced by init_dequant_tables().

◆ init_dequant_tables()

static void init_dequant_tables	(	PPS *	pps,
		const SPS *	sps
	)

static

Definition at line 683 of file h264_ps.c.

Referenced by ff_h264_decode_picture_parameter_set().

◆ build_qp_table()

static void build_qp_table	(	PPS *	pps,
		int	t,
		int	index,
		const int	depth
	)

static

Definition at line 702 of file h264_ps.c.

Referenced by ff_h264_decode_picture_parameter_set().

◆ more_rbsp_data_in_pps()

static int more_rbsp_data_in_pps	(	const SPS *	sps,
		void *	logctx
	)

static

Definition at line 711 of file h264_ps.c.

Referenced by ff_h264_decode_picture_parameter_set().

◆ ff_h264_decode_picture_parameter_set()

int ff_h264_decode_picture_parameter_set	(	GetBitContext *	gb,
		AVCodecContext *	avctx,
		H264ParamSets *	ps,
		int	bit_length
	)

Decode PPS.

Definition at line 725 of file h264_ps.c.

Referenced by decode_extradata_ps(), decode_nal_units(), and parse_nal_units().

Variable Documentation

◆ default_scaling4

const uint8_t default_scaling4[2][16]

static

Initial value:

= {
    {  6, 13, 20, 28, 13, 20, 28, 32,
      20, 28, 32, 37, 28, 32, 37, 42 },
    { 10, 14, 20, 24, 14, 20, 24, 27,
      20, 24, 27, 30, 24, 27, 30, 34 }
}

Definition at line 43 of file h264_ps.c.

Referenced by decode_scaling_matrices().

◆ default_scaling8

const uint8_t default_scaling8[2][64]

static

Initial value:

= {
    {  6, 10, 13, 16, 18, 23, 25, 27,
      10, 11, 16, 18, 23, 25, 27, 29,
      13, 16, 18, 23, 25, 27, 29, 31,
      16, 18, 23, 25, 27, 29, 31, 33,
      18, 23, 25, 27, 29, 31, 33, 36,
      23, 25, 27, 29, 31, 33, 36, 38,
      25, 27, 29, 31, 33, 36, 38, 40,
      27, 29, 31, 33, 36, 38, 40, 42 },
    {  9, 13, 15, 17, 19, 21, 22, 24,
      13, 13, 17, 19, 21, 22, 24, 25,
      15, 17, 19, 21, 22, 24, 25, 27,
      17, 19, 21, 22, 24, 25, 27, 28,
      19, 21, 22, 24, 25, 27, 28, 30,
      21, 22, 24, 25, 27, 28, 30, 32,
      22, 24, 25, 27, 28, 30, 32, 33,
      24, 25, 27, 28, 30, 32, 33, 35 }
}

Definition at line 50 of file h264_ps.c.

Referenced by decode_scaling_matrices().

◆ level_max_dpb_mbs

const int level_max_dpb_mbs[][2]

static

Initial value:

= {
    { 10, 396       },
    { 11, 900       },
    { 12, 2376      },
    { 13, 2376      },
    { 20, 2376      },
    { 21, 4752      },
    { 22, 8100      },
    { 30, 8100      },
    { 31, 18000     },
    { 32, 20480     },
    { 40, 32768     },
    { 41, 32768     },
    { 42, 34816     },
    { 50, 110400    },
    { 51, 184320    },
    { 52, 184320    },
}

Definition at line 70 of file h264_ps.c.

Referenced by ff_h264_decode_seq_parameter_set().

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ MAX_LOG2_MAX_FRAME_NUM

◆ MIN_LOG2_MAX_FRAME_NUM

◆ EXTENDED_SAR

Function Documentation

◆ remove_pps()

◆ remove_sps()

◆ decode_hrd_parameters()

◆ decode_vui_parameters()

◆ decode_scaling_list()

◆ decode_scaling_matrices()

◆ ff_h264_ps_uninit()

◆ ff_h264_decode_seq_parameter_set()

◆ init_dequant8_coeff_table()

◆ init_dequant4_coeff_table()

◆ init_dequant_tables()

◆ build_qp_table()

◆ more_rbsp_data_in_pps()

◆ ff_h264_decode_picture_parameter_set()

Variable Documentation

◆ default_scaling4

◆ default_scaling8

◆ level_max_dpb_mbs