FFmpeg  4.0
Macros | Functions | Variables
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

◆ DC_VLC_BITS

#define DC_VLC_BITS   9

Definition at line 37 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4_decode_dc().

◆ V2_INTRA_CBPC_VLC_BITS

#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().

◆ V2_MB_TYPE_VLC_BITS

#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().

◆ MV_VLC_BITS

#define MV_VLC_BITS   9

Definition at line 40 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), and ff_msmpeg4_decode_motion().

◆ V2_MV_VLC_BITS

#define V2_MV_VLC_BITS   9

Definition at line 41 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v2_decode_motion().

◆ TEX_VLC_BITS

#define TEX_VLC_BITS   9

Definition at line 42 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_block().

◆ DEFAULT_INTER_INDEX

#define DEFAULT_INTER_INDEX   3

Definition at line 44 of file msmpeg4dec.c.

Referenced by msmpeg4v34_decode_mb().

Function Documentation

◆ msmpeg4v1_pred_dc()

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().

◆ msmpeg4v2_decode_motion()

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().

◆ 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().

◆ msmpeg4v34_decode_mb()

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

Definition at line 205 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init().

◆ ff_msmpeg4_decode_init()

av_cold int ff_msmpeg4_decode_init ( AVCodecContext *  avctx)

Definition at line 301 of file msmpeg4dec.c.

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

◆ ff_msmpeg4_decode_picture_header()

int ff_msmpeg4_decode_picture_header ( MpegEncContext *  s)

Definition at line 411 of file msmpeg4dec.c.

Referenced by ff_h263_decode_frame().

◆ ff_msmpeg4_decode_ext_header()

int ff_msmpeg4_decode_ext_header ( MpegEncContext *  s,
int  buf_size 
)

Definition at line 559 of file msmpeg4dec.c.

Referenced by ff_h263_decode_frame(), and ff_msmpeg4_decode_picture_header().

◆ msmpeg4_decode_dc()

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

Definition at line 587 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_block().

◆ 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 648 of file msmpeg4dec.c.

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

◆ ff_msmpeg4_decode_motion()

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

Definition at line 835 of file msmpeg4dec.c.

Referenced by msmpeg4v34_decode_mb(), and wmv2_decode_motion().

Variable Documentation

◆ ff_mb_non_intra_vlc

VLC ff_mb_non_intra_vlc[4]

Definition at line 64 of file msmpeg4dec.c.

Referenced by ff_wmv2_decode_mb().

◆ v2_dc_lum_vlc

VLC v2_dc_lum_vlc
static

Definition at line 65 of file msmpeg4dec.c.

◆ v2_dc_chroma_vlc

VLC v2_dc_chroma_vlc
static

Definition at line 66 of file msmpeg4dec.c.

◆ v2_intra_cbpc_vlc

VLC v2_intra_cbpc_vlc
static

Definition at line 67 of file msmpeg4dec.c.

◆ v2_mb_type_vlc

VLC v2_mb_type_vlc
static

Definition at line 68 of file msmpeg4dec.c.

◆ v2_mv_vlc

VLC v2_mv_vlc
static

Definition at line 69 of file msmpeg4dec.c.

◆ ff_inter_intra_vlc

VLC ff_inter_intra_vlc

Definition at line 70 of file msmpeg4dec.c.

Referenced by ff_wmv2_decode_mb().

◆ ff_msmpeg4v1_decoder

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,
.caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
.max_lowres = 3,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NONE
},
}
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
AV_CODEC_ID_MSMPEG4V1
Definition: avcodec.h:232
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
ff_h263_decode_frame
int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: h263dec.c:420
AV_CODEC_CAP_DRAW_HORIZ_BAND
#define AV_CODEC_CAP_DRAW_HORIZ_BAND
Decoder can use draw_horiz_band callback.
Definition: avcodec.h:953
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:81
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM
#define FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM
The decoder extracts and fills its parameters even if the frame is skipped due to the skip_frame sett...
Definition: internal.h:60
ff_h263_decode_end
int ff_h263_decode_end(AVCodecContext *avctx)
Definition: h263dec.c:155
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:959
ff_msmpeg4_decode_init
av_cold int ff_msmpeg4_decode_init(AVCodecContext *avctx)
Definition: msmpeg4dec.c:301

Definition at line 873 of file msmpeg4dec.c.

◆ ff_msmpeg4v2_decoder

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,
.caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
.max_lowres = 3,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NONE
},
}
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
AV_CODEC_ID_MSMPEG4V2
Definition: avcodec.h:233
ff_h263_decode_frame
int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: h263dec.c:420
AV_CODEC_CAP_DRAW_HORIZ_BAND
#define AV_CODEC_CAP_DRAW_HORIZ_BAND
Decoder can use draw_horiz_band callback.
Definition: avcodec.h:953
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:81
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM
#define FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM
The decoder extracts and fills its parameters even if the frame is skipped due to the skip_frame sett...
Definition: internal.h:60
ff_h263_decode_end
int ff_h263_decode_end(AVCodecContext *avctx)
Definition: h263dec.c:155
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:959
ff_msmpeg4_decode_init
av_cold int ff_msmpeg4_decode_init(AVCodecContext *avctx)
Definition: msmpeg4dec.c:301

Definition at line 891 of file msmpeg4dec.c.

◆ ff_msmpeg4v3_decoder

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,
.caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
.max_lowres = 3,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NONE
},
}
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
ff_h263_decode_frame
int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: h263dec.c:420
AV_CODEC_CAP_DRAW_HORIZ_BAND
#define AV_CODEC_CAP_DRAW_HORIZ_BAND
Decoder can use draw_horiz_band callback.
Definition: avcodec.h:953
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:81
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM
#define FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM
The decoder extracts and fills its parameters even if the frame is skipped due to the skip_frame sett...
Definition: internal.h:60
ff_h263_decode_end
int ff_h263_decode_end(AVCodecContext *avctx)
Definition: h263dec.c:155
AV_CODEC_ID_MSMPEG4V3
Definition: avcodec.h:234
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:959
ff_msmpeg4_decode_init
av_cold int ff_msmpeg4_decode_init(AVCodecContext *avctx)
Definition: msmpeg4dec.c:301

Definition at line 909 of file msmpeg4dec.c.

◆ ff_wmv1_decoder

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,
.caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
.max_lowres = 3,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_NONE
},
}
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
ff_h263_decode_frame
int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: h263dec.c:420
AV_CODEC_CAP_DRAW_HORIZ_BAND
#define AV_CODEC_CAP_DRAW_HORIZ_BAND
Decoder can use draw_horiz_band callback.
Definition: avcodec.h:953
AV_CODEC_ID_WMV1
Definition: avcodec.h:235
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:81
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM
#define FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM
The decoder extracts and fills its parameters even if the frame is skipped due to the skip_frame sett...
Definition: internal.h:60
ff_h263_decode_end
int ff_h263_decode_end(AVCodecContext *avctx)
Definition: h263dec.c:155
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:959
ff_msmpeg4_decode_init
av_cold int ff_msmpeg4_decode_init(AVCodecContext *avctx)
Definition: msmpeg4dec.c:301

Definition at line 927 of file msmpeg4dec.c.

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