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

#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "msmpeg4.h"
#include "libavutil/x86_cpu.h"
#include "h263.h"
#include "mpeg4video.h"
#include "msmpeg4data.h"

Defines
#define	DC_VLC_BITS 9
#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 av_cold void	init_h263_dc_for_msmpeg4 (void)
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)
static int	msmpeg4v2_decode_motion (MpegEncContext *s, int pred, int f_code)
static int	msmpeg4v12_decode_mb (MpegEncContext *s, DCTELEM block[6][64])
static int	msmpeg4v34_decode_mb (MpegEncContext *s, DCTELEM block[6][64])
av_cold int	ff_msmpeg4_decode_init (AVCodecContext *avctx)
int	msmpeg4_decode_picture_header (MpegEncContext *s)
int	msmpeg4_decode_ext_header (MpegEncContext *s, int buf_size)
static int	msmpeg4_decode_dc (MpegEncContext s, int n, int dir_ptr)
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	v2_intra_cbpc_vlc
static VLC	v2_mb_type_vlc
static VLC	v2_mv_vlc
VLC	ff_inter_intra_vlc
AVCodec	ff_msmpeg4v1_decoder
AVCodec	ff_msmpeg4v2_decoder
AVCodec	ff_msmpeg4v3_decoder
AVCodec	ff_wmv1_decoder

Detailed Description

MSMPEG4 backend for ffmpeg encoder and decoder.

Definition in file msmpeg4.c.

Define Documentation

#define DC_MAX 119

Definition at line 841 of file msmpeg4.c.

Referenced by msmpeg4_decode_dc(), and msmpeg4_encode_dc().

#define DC_VLC_BITS 9

Definition at line 47 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4_decode_dc().

#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.

Referenced by ff_msmpeg4_decode_init(), and ff_msmpeg4_decode_motion().

#define TEX_VLC_BITS 9

Definition at line 52 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_block().

#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 133 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init().

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

Definition at line 428 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 1612 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 ( AVCodecContext * avctx )

Definition at line 1262 of file msmpeg4.c.

Referenced by vc1_decode_init(), and wmv2_decode_init().

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

Definition at line 1847 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 922 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 680 of file msmpeg4.c.

Referenced by msmpeg4_pred_dc().

static av_cold void init_h263_dc_for_msmpeg4 ( void ) [static]

Definition at line 79 of file msmpeg4.c.

Referenced by common_init().

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

Definition at line 1554 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_block().

int msmpeg4_decode_ext_header	(	MpegEncContext *	s,
		int	buf_size
	)

Definition at line 1524 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 1370 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 843 of file msmpeg4.c.

Referenced by ff_msmpeg4_encode_block().

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

Definition at line 694 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 1085 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 665 of file msmpeg4.c.

Referenced by msmpeg4_decode_dc().

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

Definition at line 1054 of file msmpeg4.c.

Referenced by msmpeg4v12_decode_mb().

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

Definition at line 1171 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init().

Variable Documentation

VLC ff_inter_intra_vlc

Definition at line 1051 of file msmpeg4.c.

Referenced by ff_wmv2_decode_mb().

VLC ff_mb_non_intra_vlc[4]

Definition at line 1045 of file msmpeg4.c.

Referenced by ff_wmv2_decode_mb().

AVCodec ff_msmpeg4v1_decoder

Initial value:

 {
    "msmpeg4v1",
    AVMEDIA_TYPE_VIDEO,
    CODEC_ID_MSMPEG4V1,
    sizeof(MpegEncContext),
    ff_msmpeg4_decode_init,
    NULL,
    ff_h263_decode_end,
    ff_h263_decode_frame,
    CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
    .max_lowres= 3,
    .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 1"),
    .pix_fmts= ff_pixfmt_list_420,
}

Definition at line 1886 of file msmpeg4.c.

AVCodec ff_msmpeg4v2_decoder

Initial value:

 {
    "msmpeg4v2",
    AVMEDIA_TYPE_VIDEO,
    CODEC_ID_MSMPEG4V2,
    sizeof(MpegEncContext),
    ff_msmpeg4_decode_init,
    NULL,
    ff_h263_decode_end,
    ff_h263_decode_frame,
    CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
    .max_lowres= 3,
    .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"),
    .pix_fmts= ff_pixfmt_list_420,
}

Definition at line 1901 of file msmpeg4.c.

AVCodec ff_msmpeg4v3_decoder

Initial value:

 {
    "msmpeg4",
    AVMEDIA_TYPE_VIDEO,
    CODEC_ID_MSMPEG4V3,
    sizeof(MpegEncContext),
    ff_msmpeg4_decode_init,
    NULL,
    ff_h263_decode_end,
    ff_h263_decode_frame,
    CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
    .max_lowres= 3,
    .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"),
    .pix_fmts= ff_pixfmt_list_420,
}

Definition at line 1916 of file msmpeg4.c.

AVCodec ff_wmv1_decoder

Initial value:

 {
    "wmv1",
    AVMEDIA_TYPE_VIDEO,
    CODEC_ID_WMV1,
    sizeof(MpegEncContext),
    ff_msmpeg4_decode_init,
    NULL,
    ff_h263_decode_end,
    ff_h263_decode_frame,
    CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
    .max_lowres= 3,
    .long_name= NULL_IF_CONFIG_SMALL("Windows Media Video 7"),
    .pix_fmts= ff_pixfmt_list_420,
}