libavcodec/h264_ps.c File Reference

H.264 / AVC / MPEG4 part10 parameter set decoding. More...

#include "internal.h"
#include "dsputil.h"
#include "avcodec.h"
#include "h264.h"
#include "h264data.h"
#include "golomb.h"
#include <assert.h>

Go to the source code of this file.

Functions
static int	decode_hrd_parameters (H264Context *h, SPS *sps)
static int	decode_vui_parameters (H264Context *h, SPS *sps)
static void	decode_scaling_list (H264Context *h, uint8_t *factors, int size, const uint8_t *jvt_list, const uint8_t *fallback_list)
static void	decode_scaling_matrices (H264Context *h, SPS *sps, PPS *pps, int is_sps, uint8_t(*scaling_matrix4)[16], uint8_t(*scaling_matrix8)[64])
int	ff_h264_decode_seq_parameter_set (H264Context *h)
	Decode SPS.
static void	build_qp_table (PPS *pps, int t, int index)
int	ff_h264_decode_picture_parameter_set (H264Context *h, int bit_length)
	Decode PPS.
Variables
static const AVRational	pixel_aspect [17]
const uint8_t	ff_h264_chroma_qp [52]
static const uint8_t	default_scaling4 [2][16]
static const uint8_t	default_scaling8 [2][64]

---

Detailed Description

H.264 / AVC / MPEG4 part10 parameter set decoding.

Author:

Michael Niedermayer <michaelni@gmx.at>

Definition in file h264_ps.c.

---

Function Documentation

static void build_qp_table	(	PPS *	pps,
		int	t,
		int	index
	)			[static]

Definition at line 420 of file h264_ps.c.

Referenced by ff_h264_decode_picture_parameter_set().

static int decode_hrd_parameters	(	H264Context *	h,
		SPS *	sps
	)			[inline, static]

Definition at line 98 of file h264_ps.c.

Referenced by decode_vui_parameters().

static void decode_scaling_list	(	H264Context *	h,
		uint8_t *	factors,
		int	size,
		const uint8_t *	jvt_list,
		const uint8_t *	fallback_list
	)			[static]

Definition at line 223 of file h264_ps.c.

Referenced by decode_scaling_matrices().

static void decode_scaling_matrices	(	H264Context *	h,
		SPS *	sps,
		PPS *	pps,
		int	is_sps,
		uint8_t(*)	scaling_matrix4[16],
		uint8_t(*)	scaling_matrix8[64]
	)			[static]

Definition at line 242 of file h264_ps.c.

Referenced by ff_h264_decode_picture_parameter_set(), and ff_h264_decode_seq_parameter_set().

static int decode_vui_parameters	(	H264Context *	h,
		SPS *	sps
	)			[inline, static]

Definition at line 123 of file h264_ps.c.

Referenced by ff_h264_decode_seq_parameter_set().

int ff_h264_decode_picture_parameter_set	(	H264Context *	h,
		int	bit_length
	)

Decode PPS.

Definition at line 427 of file h264_ps.c.

Referenced by decode_nal_units(), and parse_nal_units().

int ff_h264_decode_seq_parameter_set

(

H264Context *

h

)

Decode SPS.

Definition at line 267 of file h264_ps.c.

Referenced by decode_nal_units(), and parse_nal_units().

---

Variable Documentation

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 66 of file h264_ps.c.

Referenced by decode_scaling_matrices().

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 78 of file h264_ps.c.

Referenced by decode_scaling_matrices().

const uint8_t ff_h264_chroma_qp[52]

Initial value:

{
    0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,
   12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,
   28,29,29,30,31,32,32,33,34,34,35,35,36,36,37,37,
   37,38,38,38,39,39,39,39
}

Definition at line 59 of file h264_ps.c.

Referenced by build_qp_table(), and hl_decode_mb_internal().

const AVRational pixel_aspect[17] [static]

Initial value:

{
 {0, 1},
 {1, 1},
 {12, 11},
 {10, 11},
 {16, 11},
 {40, 33},
 {24, 11},
 {20, 11},
 {32, 11},
 {80, 33},
 {18, 11},
 {15, 11},
 {64, 33},
 {160,99},
 {4, 3},
 {3, 2},
 {2, 1},
}

Definition at line 39 of file h264_ps.c.