h264_ps.c File Reference

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

#include "libavutil/imgutils.h"
#include "internal.h"
#include "avcodec.h"
#include "h264.h"
#include "h264data.h"
#include "golomb.h"
#include <assert.h>

Go to the source code of this file.

Macros
#define	MAX_LOG2_MAX_FRAME_NUM   (12 + 4)
#define	MIN_LOG2_MAX_FRAME_NUM   4
#define	QP(qP, depth)   ( (qP)+6*((depth)-8) )
#define	CHROMA_QP_TABLE_END(d)

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, const int depth)
static int	more_rbsp_data_in_pps (H264Context *h, PPS *pps)
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 [7][QP_MAX_NUM+1]
	One chroma qp table for each possible bit depth (8-14).
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 micha.nosp@m.elni.nosp@m.@gmx..nosp@m.at

Definition in file h264_ps.c.

Macro Definition Documentation

#define MAX_LOG2_MAX_FRAME_NUM   (12 + 4)

Definition at line 39 of file h264_ps.c.

Referenced by ff_h264_decode_seq_parameter_set().

#define MIN_LOG2_MAX_FRAME_NUM   4

Definition at line 40 of file h264_ps.c.

Referenced by ff_h264_decode_seq_parameter_set().

#define QP	(		qP,
			depth
	)		( (qP)+6*((depth)-8) )

Definition at line 62 of file h264_ps.c.

Referenced by dering_TMPL(), do_a_deblock_C(), postProcess_TMPL(), and vertX1Filter_TMPL().

#define CHROMA_QP_TABLE_END

(

d

)

Value:

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

Definition at line 64 of file h264_ps.c.

Function Documentation

static int decode_hrd_parameters ( H264Context *  h, SPS *  sps  )

inlinestatic

Definition at line 152 of file h264_ps.c.

Referenced by decode_vui_parameters().

static int decode_vui_parameters ( H264Context *  h, SPS *  sps  )

inlinestatic

Definition at line 176 of file h264_ps.c.

Referenced by ff_h264_decode_seq_parameter_set().

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 285 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 303 of file h264_ps.c.

Referenced by ff_h264_decode_picture_parameter_set(), and ff_h264_decode_seq_parameter_set().

int ff_h264_decode_seq_parameter_set

(

H264Context *

h

)

Decode SPS.

Definition at line 333 of file h264_ps.c.

Referenced by decode_nal_units(), and parse_nal_units().

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

static

Definition at line 560 of file h264_ps.c.

Referenced by ff_h264_decode_picture_parameter_set().

static int more_rbsp_data_in_pps ( H264Context *  h, PPS *  pps  )

static

Definition at line 568 of file h264_ps.c.

Referenced by ff_h264_decode_picture_parameter_set().

int ff_h264_decode_picture_parameter_set	(	H264Context *	h,
		int	bit_length
	)

Decode PPS.

Definition at line 583 of file h264_ps.c.

Referenced by decode_nal_units(), and parse_nal_units().

Variable Documentation

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 42 of file h264_ps.c.

const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM+1]

One chroma qp table for each possible bit depth (8-14).

Definition at line 75 of file h264_ps.c.

Referenced by build_qp_table(), and hl_decode_mb().

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 120 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 132 of file h264_ps.c.

Referenced by decode_scaling_matrices().