libavcodec/mpeg12enc.c File Reference

MPEG1/2 encoder. More...

#include "avcodec.h"
#include "dsputil.h"
#include "mathops.h"
#include "mpegvideo.h"
#include "mpeg12.h"
#include "mpeg12data.h"
#include "bytestream.h"
#include "timecode.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/avassert.h"

Go to the source code of this file.

Defines

#define OFFSET(x)   offsetof(MpegEncContext, x)
#define VE   AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
#define COMMON_OPTS
#define mpeg12_class(x)

Functions

static void mpeg1_encode_block (MpegEncContext *s, DCTELEM *block, int component)
static void mpeg1_encode_motion (MpegEncContext *s, int val, int f_or_b_code)
static void init_uni_ac_vlc (RLTable *rl, uint8_t *uni_ac_vlc_len)
static int find_frame_rate_index (MpegEncContext *s)
static av_cold int encode_init (AVCodecContext *avctx)
static void put_header (MpegEncContext *s, int header)
static void mpeg1_encode_sequence_header (MpegEncContext *s)
static void encode_mb_skip_run (MpegEncContext *s, int run)
static av_always_inline void put_qscale (MpegEncContext *s)
void ff_mpeg1_encode_slice_header (MpegEncContext *s)
void mpeg1_encode_picture_header (MpegEncContext *s, int picture_number)
static void put_mb_modes (MpegEncContext *s, int n, int bits, int has_mv, int field_motion)
static av_always_inline void mpeg1_encode_mb_internal (MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y, int mb_block_count)
void mpeg1_encode_mb (MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y)
void ff_mpeg1_encode_init (MpegEncContext *s)
static void encode_dc (MpegEncContext *s, int diff, int component)
 mpeg12_class (1)

Variables

static const uint8_t inv_non_linear_qscale [13]
static const uint8_t svcd_scan_offset_placeholder [14]
static uint8_t mv_penalty [MAX_FCODE+1][MAX_MV *2+1]
static uint8_t fcode_tab [MAX_MV *2+1]
static uint8_t uni_mpeg1_ac_vlc_len [64 *64 *2]
static uint8_t uni_mpeg2_ac_vlc_len [64 *64 *2]
static uint32_t mpeg1_lum_dc_uni [512]
static uint32_t mpeg1_chr_dc_uni [512]
static uint8_t mpeg1_index_run [2][64]
static int8_t mpeg1_max_level [2][64]
static const AVOption mpeg1_options []
static const AVOption mpeg2_options []
AVCodec ff_mpeg2video_encoder

Detailed Description

MPEG1/2 encoder.

Definition in file mpeg12enc.c.

Define Documentation

#define COMMON_OPTS

Value:

{TIMECODE_OPT(MpegEncContext,\
         AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)},\
    { "intra_vlc",           "Use MPEG-2 intra VLC table.",       OFFSET(intra_vlc_format),    AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },\
    { "drop_frame_timecode", "Timecode is in drop frame format.", OFFSET(drop_frame_timecode), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE}, \
    { "scan_offset",         "Reserve space for SVCD scan offset user data.", OFFSET(scan_offset), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },

Definition at line 937 of file mpeg12enc.c.

#define mpeg12_class ( x   ) 

Value:

static const AVClass mpeg## x ##_class = {\
    .class_name   = "mpeg" #x "video encoder",\
    .item_name    = av_default_item_name,\
    .option       = mpeg## x ##_options,\
    .version      = LIBAVUTIL_VERSION_INT,\
};

Definition at line 956 of file mpeg12enc.c.

#define OFFSET ( x   )     offsetof(MpegEncContext, x)

Definition at line 935 of file mpeg12enc.c.

#define VE   AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM

Definition at line 936 of file mpeg12enc.c.

Function Documentation

static void encode_dc ( MpegEncContext *  s,
int  diff,
int  component 
) [inline, static]

Definition at line 818 of file mpeg12enc.c.

Referenced by mpeg1_encode_block().

static av_cold int encode_init ( AVCodecContext *  avctx  )  [static]

Definition at line 131 of file mpeg12enc.c.

static void encode_mb_skip_run ( MpegEncContext *  s,
int  run 
) [inline, static]

Definition at line 318 of file mpeg12enc.c.

Referenced by mpeg1_encode_mb_internal().

void ff_mpeg1_encode_init ( MpegEncContext *  s  ) 

Definition at line 720 of file mpeg12enc.c.

Referenced by MPV_encode_init().

void ff_mpeg1_encode_slice_header ( MpegEncContext *  s  ) 

Definition at line 337 of file mpeg12enc.c.

Referenced by encode_thread(), and mpeg1_encode_picture_header().

static int find_frame_rate_index ( MpegEncContext *  s  )  [static]

Definition at line 109 of file mpeg12enc.c.

Referenced by encode_init().

static void init_uni_ac_vlc ( RLTable *  rl,
uint8_t *  uni_ac_vlc_len 
) [static]

Definition at line 72 of file mpeg12enc.c.

Referenced by ff_mpeg1_encode_init().

mpeg12_class ( 1   ) 

Definition at line 964 of file mpeg12enc.c.

static void mpeg1_encode_block ( MpegEncContext *  s,
DCTELEM *  block,
int  component 
) [static]

Definition at line 855 of file mpeg12enc.c.

Referenced by mpeg1_encode_mb_internal().

void mpeg1_encode_mb ( MpegEncContext *  s,
DCTELEM  block[6][64],
int  motion_x,
int  motion_y 
)

Definition at line 673 of file mpeg12enc.c.

Referenced by encode_mb_internal().

static av_always_inline void mpeg1_encode_mb_internal ( MpegEncContext *  s,
DCTELEM  block[6][64],
int  motion_x,
int  motion_y,
int  mb_block_count 
) [static]

Definition at line 448 of file mpeg12enc.c.

Referenced by mpeg1_encode_mb().

static void mpeg1_encode_motion ( MpegEncContext *  s,
int  val,
int  f_or_b_code 
) [static]

Definition at line 680 of file mpeg12enc.c.

Referenced by mpeg1_encode_mb_internal().

void mpeg1_encode_picture_header ( MpegEncContext *  s,
int  picture_number 
)

Definition at line 348 of file mpeg12enc.c.

Referenced by encode_picture().

static void mpeg1_encode_sequence_header ( MpegEncContext *  s  )  [static]

Definition at line 203 of file mpeg12enc.c.

Referenced by mpeg1_encode_picture_header().

static void put_header ( MpegEncContext *  s,
int  header 
) [static]

Definition at line 195 of file mpeg12enc.c.

Referenced by asf_write_header1(), ff_mpeg1_encode_slice_header(), mpeg1_encode_picture_header(), and mpeg1_encode_sequence_header().

static void put_mb_modes ( MpegEncContext *  s,
int  n,
int  bits,
int  has_mv,
int  field_motion 
) [inline, static]

Definition at line 437 of file mpeg12enc.c.

Referenced by mpeg1_encode_mb_internal().

static av_always_inline void put_qscale ( MpegEncContext *  s  )  [static]

Definition at line 327 of file mpeg12enc.c.

Referenced by ff_mpeg1_encode_slice_header(), and mpeg1_encode_mb_internal().

Variable Documentation

uint8_t fcode_tab[MAX_MV *2+1] [static]

Definition at line 60 of file mpeg12enc.c.

AVCodec ff_mpeg2video_encoder

Initial value:

 {
    .name           = "mpeg2video",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = CODEC_ID_MPEG2VIDEO,
    .priv_data_size = sizeof(MpegEncContext),
    .init           = encode_init,
    .encode         = MPV_encode_picture,
    .close          = MPV_encode_end,
    .supported_framerates= avpriv_frame_rate_tab+1,
    .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE},
    .capabilities= CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
    .long_name= NULL_IF_CONFIG_SMALL("MPEG-2 video"),
    .priv_class     = &mpeg2_class,
}

Definition at line 982 of file mpeg12enc.c.

const uint8_t inv_non_linear_qscale[13] [static]

Initial value:

 {
    0, 2, 4, 6, 8,
    9,10,11,12,13,14,15,16,
}

Definition at line 41 of file mpeg12enc.c.

Referenced by put_qscale().

uint32_t mpeg1_chr_dc_uni[512] [static]

Definition at line 67 of file mpeg12enc.c.

Referenced by encode_dc(), and ff_mpeg1_encode_init().

uint8_t mpeg1_index_run[2][64] [static]

Definition at line 69 of file mpeg12enc.c.

Referenced by ff_mpeg1_encode_init(), and mpeg1_encode_block().

uint32_t mpeg1_lum_dc_uni[512] [static]

Definition at line 66 of file mpeg12enc.c.

Referenced by encode_dc(), and ff_mpeg1_encode_init().

int8_t mpeg1_max_level[2][64] [static]

Definition at line 70 of file mpeg12enc.c.

Referenced by ff_mpeg1_encode_init(), and mpeg1_encode_block().

const AVOption mpeg1_options[] [static]

Initial value:

 {
    COMMON_OPTS
    { NULL },
}

Definition at line 944 of file mpeg12enc.c.

const AVOption mpeg2_options[] [static]

Initial value:

 {
    COMMON_OPTS
    { "non_linear_quant",    "Use nonlinear quantizer.",          OFFSET(q_scale_type),         AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },
    { "alternate_scan",      "Enable alternate scantable.",       OFFSET(alternate_scan),       AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },
    { NULL },
}

Definition at line 949 of file mpeg12enc.c.

uint8_t mv_penalty[MAX_FCODE+1][MAX_MV *2+1] [static]

Definition at line 59 of file mpeg12enc.c.

const uint8_t svcd_scan_offset_placeholder[14] [static]

Initial value:

 {
    0x10, 0x0E,
    0x00, 0x80, 0x81,
    0x00, 0x80, 0x81,
    0xff, 0xff, 0xff,
    0xff, 0xff, 0xff,
}

Definition at line 46 of file mpeg12enc.c.

Referenced by mpeg1_encode_picture_header().

uint8_t uni_mpeg1_ac_vlc_len[64 *64 *2] [static]

Definition at line 62 of file mpeg12enc.c.

Referenced by ff_mpeg1_encode_init().

uint8_t uni_mpeg2_ac_vlc_len[64 *64 *2] [static]

Definition at line 63 of file mpeg12enc.c.

Referenced by ff_mpeg1_encode_init().

Generated on Fri Oct 26 02:46:09 2012 for FFmpeg by  doxygen 1.5.8