libavcodec/msmpeg4.c File Reference

MSMPEG4 backend for ffmpeg encoder and decoder. More...

#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "msmpeg4.h"
#include "msmpeg4data.h"

Go to the source code of this file.

Defines
#define	DC_VLC_BITS   9
#define	CBPY_VLC_BITS   6
#define	V1_INTRA_CBPC_VLC_BITS   6
#define	V1_INTER_CBPC_VLC_BITS   6
#define	V2_INTRA_CBPC_VLC_BITS   3
#define	V2_MB_TYPE_VLC_BITS   7
#define	MV_VLC_BITS   9
#define	V2_MV_VLC_BITS   9
#define	TEX_VLC_BITS   9
#define	II_BITRATE   128*1024
#define	MBAC_BITRATE   50*1024
#define	DEFAULT_INTER_INDEX   3
#define	DC_MAX   119
Functions
static int	msmpeg4_decode_dc (MpegEncContext *s, int n, int *dir_ptr)
static void	init_h263_dc_for_msmpeg4 (void)
static void	msmpeg4_memsetw (short *tab, int val, int n)
static int	msmpeg4v12_decode_mb (MpegEncContext *s, DCTELEM block[6][64])
static int	msmpeg4v34_decode_mb (MpegEncContext *s, DCTELEM block[6][64])
static av_cold void	common_init (MpegEncContext *s)
int	ff_msmpeg4_coded_block_pred (MpegEncContext *s, int n, uint8_t **coded_block_ptr)
static int	msmpeg4v1_pred_dc (MpegEncContext *s, int n, int32_t **dc_val_ptr)
static int	get_dc (uint8_t *src, int stride, int scale)
static int	msmpeg4_pred_dc (MpegEncContext *s, int n, int16_t **dc_val_ptr, int *dir_ptr)
static void	msmpeg4_encode_dc (MpegEncContext *s, int level, int n, int *dir_ptr)
void	ff_msmpeg4_encode_block (MpegEncContext *s, DCTELEM *block, int n)
av_cold int	ff_msmpeg4_decode_init (MpegEncContext *s)
int	msmpeg4_decode_picture_header (MpegEncContext *s)
int	msmpeg4_decode_ext_header (MpegEncContext *s, int buf_size)
static int	msmpeg4v2_decode_motion (MpegEncContext *s, int pred, int f_code)
int	ff_msmpeg4_decode_block (MpegEncContext *s, DCTELEM *block, int n, int coded, const uint8_t *scan_table)
int	ff_msmpeg4_decode_motion (MpegEncContext *s, int *mx_ptr, int *my_ptr)
Variables
static uint32_t	v2_dc_lum_table [512][2]
static uint32_t	v2_dc_chroma_table [512][2]
const uint8_t	wmv3_dc_scale_table [32]
static uint8_t	static_rl_table_store [NB_RL_TABLES][2][2 *MAX_RUN+MAX_LEVEL+3]
VLC	ff_mb_non_intra_vlc [4]
static VLC	v2_dc_lum_vlc
static VLC	v2_dc_chroma_vlc
static VLC	cbpy_vlc
static VLC	v2_intra_cbpc_vlc
static VLC	v2_mb_type_vlc
static VLC	v2_mv_vlc
static VLC	v1_intra_cbpc_vlc
static VLC	v1_inter_cbpc_vlc
VLC	ff_inter_intra_vlc

---

Detailed Description

MSMPEG4 backend for ffmpeg encoder and decoder.

Definition in file msmpeg4.c.

---

Define Documentation

#define CBPY_VLC_BITS   6

Definition at line 45 of file msmpeg4.c.

#define DC_MAX   119

Definition at line 772 of file msmpeg4.c.

Referenced by msmpeg4_decode_dc(), and msmpeg4_encode_dc().

#define DC_VLC_BITS   9

Definition at line 44 of file msmpeg4.c.

#define DEFAULT_INTER_INDEX   3

Definition at line 57 of file msmpeg4.c.

Referenced by msmpeg4v34_decode_mb().

#define II_BITRATE   128*1024

Definition at line 54 of file msmpeg4.c.

Referenced by msmpeg4_decode_picture_header().

#define MBAC_BITRATE   50*1024

Definition at line 55 of file msmpeg4.c.

Referenced by msmpeg4_decode_picture_header().

#define MV_VLC_BITS   9

Definition at line 50 of file msmpeg4.c.

#define TEX_VLC_BITS   9

Definition at line 52 of file msmpeg4.c.

#define V1_INTER_CBPC_VLC_BITS   6

Definition at line 47 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

#define V1_INTRA_CBPC_VLC_BITS   6

Definition at line 46 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

#define V2_INTRA_CBPC_VLC_BITS   3

Definition at line 48 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

#define V2_MB_TYPE_VLC_BITS   7

Definition at line 49 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

#define V2_MV_VLC_BITS   9

Definition at line 51 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v2_decode_motion().

---

Function Documentation

static av_cold void common_init

(

MpegEncContext *

s

)

[static]

Definition at line 88 of file msmpeg4.c.

int ff_msmpeg4_coded_block_pred	(	MpegEncContext *	s,
		int	n,
		uint8_t **	coded_block_ptr
	)

Definition at line 388 of file msmpeg4.c.

Referenced by ff_wmv2_decode_mb(), ff_wmv2_encode_mb(), and msmpeg4v34_decode_mb().

int ff_msmpeg4_decode_block	(	MpegEncContext *	s,
		DCTELEM *	block,
		int	n,
		int	coded,
		const uint8_t *	scan_table
	)

Definition at line 1608 of file msmpeg4.c.

Referenced by ff_wmv2_decode_mb(), msmpeg4v12_decode_mb(), msmpeg4v34_decode_mb(), and wmv2_decode_inter_block().

av_cold int ff_msmpeg4_decode_init

(

MpegEncContext *

s

)

Definition at line 1053 of file msmpeg4.c.

Referenced by ff_h263_decode_init().

int ff_msmpeg4_decode_motion	(	MpegEncContext *	s,
		int *	mx_ptr,
		int *	my_ptr
	)

Definition at line 1912 of file msmpeg4.c.

Referenced by msmpeg4v34_decode_mb(), and wmv2_decode_motion().

void ff_msmpeg4_encode_block	(	MpegEncContext *	s,
		DCTELEM *	block,
		int	n
	)

Definition at line 861 of file msmpeg4.c.

Referenced by ff_wmv2_encode_mb().

static int get_dc	(	uint8_t *	src,
		int	stride,
		int	scale
	)			[static]

Definition at line 611 of file msmpeg4.c.

Referenced by iterative_me(), and msmpeg4_pred_dc().

static av_cold void init_h263_dc_for_msmpeg4

(

void

)

[static]

Definition at line 998 of file msmpeg4.c.

Referenced by common_init().

static int msmpeg4_decode_dc	(	MpegEncContext *	s,
		int	n,
		int *	dir_ptr
	)			[static]

Definition at line 1855 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_block().

int msmpeg4_decode_ext_header	(	MpegEncContext *	s,
		int	buf_size
	)

Definition at line 1326 of file msmpeg4.c.

Referenced by ff_h263_decode_frame(), and msmpeg4_decode_picture_header().

int msmpeg4_decode_picture_header

(

MpegEncContext *

s

)

Definition at line 1157 of file msmpeg4.c.

Referenced by ff_h263_decode_frame().

static void msmpeg4_encode_dc	(	MpegEncContext *	s,
		int	level,
		int	n,
		int *	dir_ptr
	)			[static]

Definition at line 774 of file msmpeg4.c.

Referenced by ff_msmpeg4_encode_block().

static void msmpeg4_memsetw	(	short *	tab,
		int	val,
		int	n
	)			[inline, static]

Definition at line 1358 of file msmpeg4.c.

static int msmpeg4_pred_dc	(	MpegEncContext *	s,
		int	n,
		int16_t **	dc_val_ptr,
		int *	dir_ptr
	)			[inline, static]

Definition at line 625 of file msmpeg4.c.

Referenced by msmpeg4_decode_dc(), and msmpeg4_encode_dc().

static int msmpeg4v12_decode_mb	(	MpegEncContext *	s,
		DCTELEM	block[6][64]
	)			[static]

Definition at line 1432 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init().

static int msmpeg4v1_pred_dc	(	MpegEncContext *	s,
		int	n,
		int32_t **	dc_val_ptr
	)			[inline, static]

Definition at line 596 of file msmpeg4.c.

Referenced by msmpeg4_decode_dc(), and msmpeg4_encode_dc().

static int msmpeg4v2_decode_motion	(	MpegEncContext *	s,
		int	pred,
		int	f_code
	)			[static]

Definition at line 1401 of file msmpeg4.c.

Referenced by msmpeg4v12_decode_mb().

static int msmpeg4v34_decode_mb	(	MpegEncContext *	s,
		DCTELEM	block[6][64]
	)			[static]

Definition at line 1518 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init().

---

Variable Documentation

VLC cbpy_vlc [static]

Definition at line 988 of file msmpeg4.c.

VLC ff_inter_intra_vlc

Definition at line 994 of file msmpeg4.c.

Referenced by ff_wmv2_decode_mb().

VLC ff_mb_non_intra_vlc[4]

Definition at line 985 of file msmpeg4.c.

Referenced by ff_wmv2_decode_mb().

uint8_t static_rl_table_store[NB_RL_TABLES][2][2 *MAX_RUN+MAX_LEVEL+3] [static]

Definition at line 86 of file msmpeg4.c.

VLC v1_inter_cbpc_vlc [static]

Definition at line 993 of file msmpeg4.c.

VLC v1_intra_cbpc_vlc [static]

Definition at line 992 of file msmpeg4.c.

uint32_t v2_dc_chroma_table[512][2] [static]

Definition at line 60 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), init_h263_dc_for_msmpeg4(), and msmpeg4_encode_dc().

VLC v2_dc_chroma_vlc [static]

Definition at line 987 of file msmpeg4.c.

uint32_t v2_dc_lum_table[512][2] [static]

Definition at line 59 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), init_h263_dc_for_msmpeg4(), and msmpeg4_encode_dc().

VLC v2_dc_lum_vlc [static]

Definition at line 986 of file msmpeg4.c.

VLC v2_intra_cbpc_vlc [static]

Definition at line 989 of file msmpeg4.c.

VLC v2_mb_type_vlc [static]

Definition at line 990 of file msmpeg4.c.

VLC v2_mv_vlc [static]

Definition at line 991 of file msmpeg4.c.

const uint8_t wmv3_dc_scale_table[32]

Definition at line 274 of file vc1data.c.

Referenced by common_init().