FFmpeg
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 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)
 
void 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
 
VLC ff_inter_intra_vlc
 
const AVCodec ff_msmpeg4v1_decoder
 
const AVCodec ff_msmpeg4v2_decoder
 
const AVCodec ff_msmpeg4v3_decoder
 
const AVCodec ff_wmv1_decoder
 

Macro Definition Documentation

◆ DC_VLC_BITS

#define DC_VLC_BITS   9

Definition at line 37 of file msmpeg4dec.c.

◆ V2_INTRA_CBPC_VLC_BITS

#define V2_INTRA_CBPC_VLC_BITS   3

Definition at line 38 of file msmpeg4dec.c.

◆ V2_MB_TYPE_VLC_BITS

#define V2_MB_TYPE_VLC_BITS   7

Definition at line 39 of file msmpeg4dec.c.

◆ MV_VLC_BITS

#define MV_VLC_BITS   9

Definition at line 40 of file msmpeg4dec.c.

◆ TEX_VLC_BITS

#define TEX_VLC_BITS   9

Definition at line 41 of file msmpeg4dec.c.

◆ DEFAULT_INTER_INDEX

#define DEFAULT_INTER_INDEX   3

Definition at line 43 of file msmpeg4dec.c.

Function Documentation

◆ msmpeg4v1_pred_dc()

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

Definition at line 45 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 71 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 102 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 203 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 294 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 399 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 555 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 583 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 639 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()

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

Definition at line 826 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 63 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), ff_wmv2_decode_mb(), and msmpeg4v34_decode_mb().

◆ v2_dc_lum_vlc

VLC v2_dc_lum_vlc
static

Definition at line 64 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4_decode_dc().

◆ v2_dc_chroma_vlc

VLC v2_dc_chroma_vlc
static

Definition at line 65 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4_decode_dc().

◆ v2_intra_cbpc_vlc

VLC v2_intra_cbpc_vlc
static

Definition at line 66 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

◆ v2_mb_type_vlc

VLC v2_mb_type_vlc
static

Definition at line 67 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

◆ ff_inter_intra_vlc

VLC ff_inter_intra_vlc

Definition at line 68 of file msmpeg4dec.c.

Referenced by ff_msmpeg4_decode_init(), ff_wmv2_decode_mb(), and msmpeg4v34_decode_mb().

◆ ff_msmpeg4v1_decoder

const 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
},
}

Definition at line 858 of file msmpeg4dec.c.

◆ ff_msmpeg4v2_decoder

const 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
},
}

Definition at line 876 of file msmpeg4dec.c.

◆ ff_msmpeg4v3_decoder

const 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
},
}

Definition at line 894 of file msmpeg4dec.c.

◆ ff_wmv1_decoder

const 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
},
}

Definition at line 912 of file msmpeg4dec.c.

AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
init
static int init
Definition: av_tx.c:47
AV_CODEC_ID_MSMPEG4V2
@ AV_CODEC_ID_MSMPEG4V2
Definition: codec_id.h:65
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:62
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:296
AV_CODEC_ID_MSMPEG4V1
@ AV_CODEC_ID_MSMPEG4V1
Definition: codec_id.h:64
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
AV_CODEC_ID_WMV1
@ AV_CODEC_ID_WMV1
Definition: codec_id.h:67
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
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:117
ff_h263_decode_end
int ff_h263_decode_end(AVCodecContext *avctx)
Definition: h263dec.c:158
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
ff_h263_decode_frame
int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: h263dec.c:426
AV_CODEC_CAP_DRAW_HORIZ_BAND
#define AV_CODEC_CAP_DRAW_HORIZ_BAND
Decoder can use draw_horiz_band callback.
Definition: codec.h:44
AV_CODEC_ID_MSMPEG4V3
@ AV_CODEC_ID_MSMPEG4V3
Definition: codec_id.h:66
ff_msmpeg4_decode_init
av_cold int ff_msmpeg4_decode_init(AVCodecContext *avctx)
Definition: msmpeg4dec.c:294
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:71
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