msmpeg4dec.c File Reference

#include "avcodec.h"
#include "internal.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "msmpeg4.h"
#include "libavutil/imgutils.h"
#include "h263.h"
#include "mpeg4video.h"
#include "msmpeg4data.h"
#include "vc1data.h"
#include "wmv2.h"

Go to the source code of this file.

Macros
#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 int	msmpeg4v1_pred_dc (MpegEncContext *s, int n, int32_t **dc_val_ptr)
static int	msmpeg4v2_decode_motion (MpegEncContext *s, int pred, int f_code)
static int	msmpeg4v12_decode_mb (MpegEncContext *s, int16_t block[6][64])
static int	msmpeg4v34_decode_mb (MpegEncContext *s, int16_t 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, int16_t *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

Macro Definition Documentation

#define DC_VLC_BITS   9

Definition at line 37 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4_decode_dc().

#define V2_INTRA_CBPC_VLC_BITS   3

Definition at line 38 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

#define V2_MB_TYPE_VLC_BITS   7

Definition at line 39 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

#define MV_VLC_BITS   9

Definition at line 40 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), and ff_msmpeg4_decode_motion().

#define V2_MV_VLC_BITS   9

Definition at line 41 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v2_decode_motion().

#define TEX_VLC_BITS   9

Definition at line 42 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_block().

#define DEFAULT_INTER_INDEX   3

Definition at line 44 of file msmpeg4dec.c.

Referenced by msmpeg4v34_decode_mb().

Function Documentation

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

inlinestatic

Definition at line 46 of file msmpeg4dec.c.

Referenced by msmpeg4_decode_dc().

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

static

Definition at line 73 of file msmpeg4dec.c.

Referenced by msmpeg4v12_decode_mb().

static int msmpeg4v12_decode_mb ( MpegEncContext *  s, int16_t  block[6][64]  )

static

Definition at line 104 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init().

static int msmpeg4v34_decode_mb ( MpegEncContext *  s, int16_t  block[6][64]  )

static

Definition at line 194 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init().

av_cold int ff_msmpeg4_decode_init

(

AVCodecContext *

avctx

)

Definition at line 287 of file msmpeg4dec.c.

Referenced by vc1_decode_frame(), vc1_decode_init(), wmv2_decode_init(), and wmv9_init().

int ff_msmpeg4_decode_picture_header

(

MpegEncContext *

s

)

Definition at line 397 of file msmpeg4dec.c.

Referenced by ff_h263_decode_frame().

int ff_msmpeg4_decode_ext_header	(	MpegEncContext *	s,
		int	buf_size
	)

Definition at line 552 of file msmpeg4dec.c.

Referenced by ff_h263_decode_frame(), and ff_msmpeg4_decode_picture_header().

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

static

Definition at line 580 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_block().

int ff_msmpeg4_decode_block	(	MpegEncContext *	s,
		int16_t *	block,
		int	n,
		int	coded,
		const uint8_t *	scan_table
	)

Definition at line 642 of file msmpeg4dec.c.

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

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

Definition at line 879 of file msmpeg4dec.c.

Referenced by msmpeg4v34_decode_mb(), and wmv2_decode_motion().

Variable Documentation

VLC ff_mb_non_intra_vlc[4]

Definition at line 64 of file msmpeg4dec.c.

Referenced by ff_wmv2_decode_mb().

VLC v2_dc_lum_vlc

static

Definition at line 65 of file msmpeg4dec.c.

VLC v2_dc_chroma_vlc

static

Definition at line 66 of file msmpeg4dec.c.

VLC v2_intra_cbpc_vlc

static

Definition at line 67 of file msmpeg4dec.c.

VLC v2_mb_type_vlc

static

Definition at line 68 of file msmpeg4dec.c.

VLC v2_mv_vlc

static

Definition at line 69 of file msmpeg4dec.c.

VLC ff_inter_intra_vlc

Definition at line 70 of file msmpeg4dec.c.

Referenced by ff_wmv2_decode_mb().

AVCodec ff_msmpeg4v1_decoder

Initial value:

= {
    .name           = "msmpeg4v1",
    .long_name      = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 1"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_MSMPEG4V1,
    .priv_data_size = sizeof(MpegEncContext),
    .init           = ff_msmpeg4_decode_init,
    .close          = ff_h263_decode_end,
    .decode         = ff_h263_decode_frame,
    .capabilities   = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1,
    .max_lowres     = 3,
    .pix_fmts       = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_YUV420P,
        AV_PIX_FMT_NONE
    },
}

Definition at line 917 of file msmpeg4dec.c.

AVCodec ff_msmpeg4v2_decoder

Initial value:

= {
    .name           = "msmpeg4v2",
    .long_name      = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_MSMPEG4V2,
    .priv_data_size = sizeof(MpegEncContext),
    .init           = ff_msmpeg4_decode_init,
    .close          = ff_h263_decode_end,
    .decode         = ff_h263_decode_frame,
    .capabilities   = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1,
    .max_lowres     = 3,
    .pix_fmts       = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_YUV420P,
        AV_PIX_FMT_NONE
    },
}

Definition at line 934 of file msmpeg4dec.c.

AVCodec ff_msmpeg4v3_decoder

Initial value:

= {
    .name           = "msmpeg4",
    .long_name      = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_MSMPEG4V3,
    .priv_data_size = sizeof(MpegEncContext),
    .init           = ff_msmpeg4_decode_init,
    .close          = ff_h263_decode_end,
    .decode         = ff_h263_decode_frame,
    .capabilities   = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1,
    .max_lowres     = 3,
    .pix_fmts       = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_YUV420P,
        AV_PIX_FMT_NONE
    },
}

Definition at line 951 of file msmpeg4dec.c.

AVCodec ff_wmv1_decoder

Initial value:

= {
    .name           = "wmv1",
    .long_name      = NULL_IF_CONFIG_SMALL("Windows Media Video 7"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_WMV1,
    .priv_data_size = sizeof(MpegEncContext),
    .init           = ff_msmpeg4_decode_init,
    .close          = ff_h263_decode_end,
    .decode         = ff_h263_decode_frame,
    .capabilities   = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1,
    .max_lowres     = 3,
    .pix_fmts       = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_YUV420P,
        AV_PIX_FMT_NONE
    },
}

Definition at line 968 of file msmpeg4dec.c.