libavcodec/msmpeg4.c File Reference

MSMPEG4 backend for 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"
#include "vc1data.h"

Go to the source code of this file.

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 DEFAULT_INTER_INDEX   3

Functions

static av_cold void init_h263_dc_for_msmpeg4 (void)
av_cold void ff_msmpeg4_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)
int ff_msmpeg4_pred_dc (MpegEncContext *s, int n, int16_t **dc_val_ptr, int *dir_ptr)
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 ff_msmpeg4_decode_picture_header (MpegEncContext *s)
int ff_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

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 encoder and decoder.

Definition in file msmpeg4.c.

Define Documentation

#define DC_VLC_BITS   9

Definition at line 49 of file msmpeg4.c.

#define DEFAULT_INTER_INDEX   3

Definition at line 56 of file msmpeg4.c.

Referenced by msmpeg4v34_decode_mb().

#define MV_VLC_BITS   9

Definition at line 52 of file msmpeg4.c.

#define TEX_VLC_BITS   9

Definition at line 54 of file msmpeg4.c.

#define V2_INTRA_CBPC_VLC_BITS   3

Definition at line 50 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

#define V2_MB_TYPE_VLC_BITS   7

Definition at line 51 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

#define V2_MV_VLC_BITS   9

Definition at line 53 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v2_decode_motion().

Function Documentation

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

Definition at line 164 of file msmpeg4.c.

Referenced by ff_msmpeg4_encode_mb(), ff_wmv2_decode_mb(), ff_wmv2_encode_mb(), and msmpeg4v34_decode_mb().

av_cold void ff_msmpeg4_common_init ( MpegEncContext *  s  ) 

Definition at line 114 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and ff_msmpeg4_encode_init().

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

Definition at line 936 of file msmpeg4.c.

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

int ff_msmpeg4_decode_ext_header ( MpegEncContext *  s,
int  buf_size 
)

Definition at line 848 of file msmpeg4.c.

Referenced by ff_h263_decode_frame(), and ff_msmpeg4_decode_picture_header().

av_cold int ff_msmpeg4_decode_init ( AVCodecContext *  avctx  ) 

Definition at line 586 of file msmpeg4.c.

Referenced by vc1_decode_frame(), and wmv2_decode_init().

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

Definition at line 1171 of file msmpeg4.c.

Referenced by msmpeg4v34_decode_mb(), and wmv2_decode_motion().

int ff_msmpeg4_decode_picture_header ( MpegEncContext *  s  ) 

Definition at line 694 of file msmpeg4.c.

Referenced by ff_h263_decode_frame().

int ff_msmpeg4_pred_dc ( MpegEncContext *  s,
int  n,
int16_t **  dc_val_ptr,
int *  dir_ptr 
)

Definition at line 219 of file msmpeg4.c.

Referenced by msmpeg4_decode_dc(), and msmpeg4_encode_dc().

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

Definition at line 205 of file msmpeg4.c.

Referenced by ff_msmpeg4_pred_dc(), and iterative_me().

static av_cold void init_h263_dc_for_msmpeg4 ( void   )  [static]

Definition at line 60 of file msmpeg4.c.

Referenced by ff_msmpeg4_common_init().

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

Definition at line 878 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_block().

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

Definition at line 409 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 190 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 378 of file msmpeg4.c.

Referenced by msmpeg4v12_decode_mb().

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

Definition at line 495 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init().

Variable Documentation

VLC ff_inter_intra_vlc

Definition at line 375 of file msmpeg4.c.

Referenced by ff_wmv2_decode_mb().

VLC ff_mb_non_intra_vlc[4]

Definition at line 369 of file msmpeg4.c.

Referenced by ff_wmv2_decode_mb().

AVCodec ff_msmpeg4v1_decoder

Initial value:

 {
    .name           = "msmpeg4v1",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = CODEC_ID_MSMPEG4V1,
    .priv_data_size = sizeof(MpegEncContext),
    .init           = ff_msmpeg4_decode_init,
    .close          = ff_h263_decode_end,
    .decode         = ff_h263_decode_frame,
    .capabilities   = 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 1210 of file msmpeg4.c.

AVCodec ff_msmpeg4v2_decoder

Initial value:

 {
    .name           = "msmpeg4v2",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = CODEC_ID_MSMPEG4V2,
    .priv_data_size = sizeof(MpegEncContext),
    .init           = ff_msmpeg4_decode_init,
    .close          = ff_h263_decode_end,
    .decode         = ff_h263_decode_frame,
    .capabilities   = 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 1224 of file msmpeg4.c.

AVCodec ff_msmpeg4v3_decoder

Initial value:

 {
    .name           = "msmpeg4",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = CODEC_ID_MSMPEG4V3,
    .priv_data_size = sizeof(MpegEncContext),
    .init           = ff_msmpeg4_decode_init,
    .close          = ff_h263_decode_end,
    .decode         = ff_h263_decode_frame,
    .capabilities   = 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 1238 of file msmpeg4.c.

AVCodec ff_wmv1_decoder

Initial value:

 {
    .name           = "wmv1",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = CODEC_ID_WMV1,
    .priv_data_size = sizeof(MpegEncContext),
    .init           = ff_msmpeg4_decode_init,
    .close          = ff_h263_decode_end,
    .decode         = ff_h263_decode_frame,
    .capabilities   = 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,
}

Definition at line 1252 of file msmpeg4.c.

VLC v2_dc_chroma_vlc [static]

Definition at line 371 of file msmpeg4.c.

VLC v2_dc_lum_vlc [static]

Definition at line 370 of file msmpeg4.c.

VLC v2_intra_cbpc_vlc [static]

Definition at line 372 of file msmpeg4.c.

VLC v2_mb_type_vlc [static]

Definition at line 373 of file msmpeg4.c.

VLC v2_mv_vlc [static]

Definition at line 374 of file msmpeg4.c.

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