h261enc.c File Reference

#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "h261.h"
#include "h261enc.h"
#include "mpegvideoenc.h"

Go to the source code of this file.

Data Structures
struct	VLCLUT
struct	H261EncContext

Macros
#define	H261_MAX_RUN   26
#define	H261_MAX_LEVEL   15
#define	H261_ESC_LEN   (6 + 6 + 8)

Functions
void	ff_h261_encode_picture_header (MpegEncContext *s)
static void	h261_encode_gob_header (MpegEncContext *s, int mb_line)
	Encode a group of blocks header. More...
void	ff_h261_reorder_mb_index (MpegEncContext *s)
static void	h261_encode_motion (PutBitContext *pb, int val)
static int	get_cbp (MpegEncContext *s, int16_t block[6][64])
static void	h261_encode_block (H261EncContext *h, int16_t *block, int n)
	Encode an 8x8 block. More...
void	ff_h261_encode_mb (MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
static av_cold void	h261_encode_init_static (void)
av_cold int	ff_h261_encode_init (MpegEncContext *s)

Variables
static struct VLCLUT	vlc_lut [H261_MAX_RUN+1][32/*0..2 *H261_MAX_LEN are used */]
static uint8_t	uni_h261_rl_len [64 *128]
static uint8_t	uni_h261_rl_len_last [64 *128]
const FFCodec	ff_h261_encoder

Detailed Description

H.261 encoder.

Definition in file h261enc.c.

Macro Definition Documentation

H261_MAX_RUN

#define H261_MAX_RUN   26

Definition at line 39 of file h261enc.c.

H261_MAX_LEVEL

#define H261_MAX_LEVEL   15

Definition at line 40 of file h261enc.c.

H261_ESC_LEN

#define H261_ESC_LEN   (6 + 6 + 8)

Definition at line 41 of file h261enc.c.

Function Documentation

ff_h261_encode_picture_header()

void ff_h261_encode_picture_header

(

MpegEncContext *

s

)

Definition at line 63 of file h261enc.c.

Referenced by encode_picture().

h261_encode_gob_header()

static void h261_encode_gob_header ( MpegEncContext *  s, int  mb_line  )

static

Encode a group of blocks header.

Definition at line 96 of file h261enc.c.

Referenced by ff_h261_reorder_mb_index().

ff_h261_reorder_mb_index()

void ff_h261_reorder_mb_index

(

MpegEncContext *

s

)

Definition at line 113 of file h261enc.c.

Referenced by encode_thread().

h261_encode_motion()

static void h261_encode_motion ( PutBitContext *  pb, int  val  )

static

Definition at line 141 of file h261enc.c.

Referenced by ff_h261_encode_mb().

get_cbp()

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

inlinestatic

Definition at line 159 of file h261enc.c.

Referenced by ff_h261_encode_mb().

h261_encode_block()

static void h261_encode_block ( H261EncContext *  h, int16_t *  block, int  n  )

static

Encode an 8x8 block.

Parameters

block	the 8x8 block
n	block index (0-3 are luma, 4-5 are chroma)

Definition at line 174 of file h261enc.c.

Referenced by ff_h261_encode_mb().

ff_h261_encode_mb()

void ff_h261_encode_mb	(	MpegEncContext *	s,
		int16_t	block[6][64],
		int	motion_x,
		int	motion_y
	)

Definition at line 234 of file h261enc.c.

Referenced by encode_mb_internal().

h261_encode_init_static()

static av_cold void h261_encode_init_static ( void  )

static

Definition at line 324 of file h261enc.c.

Referenced by ff_h261_encode_init().

ff_h261_encode_init()

av_cold int ff_h261_encode_init

(

MpegEncContext *

s

)

Definition at line 346 of file h261enc.c.

Referenced by ff_mpv_encode_init().

Variable Documentation

vlc_lut

struct VLCLUT vlc_lut[H261_MAX_RUN + 1][32 /* 0..2 * H261_MAX_LEN are used */]

static

Referenced by h261_encode_block(), and h261_encode_init_static().

uni_h261_rl_len

uint8_t uni_h261_rl_len[64 *128]

static

Definition at line 48 of file h261enc.c.

Referenced by ff_h261_encode_init(), and h261_encode_init_static().

uni_h261_rl_len_last

uint8_t uni_h261_rl_len_last[64 *128]

static

Definition at line 49 of file h261enc.c.

Referenced by ff_h261_encode_init(), and h261_encode_init_static().

ff_h261_encoder

const FFCodec ff_h261_encoder

Initial value:

= {
    .p.name         = "h261",
    CODEC_LONG_NAME("H.261"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_H261,
    .p.priv_class   = &ff_mpv_enc_class,
    .priv_data_size = sizeof(H261EncContext),
    .init           = ff_mpv_encode_init,
    FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
    .close          = ff_mpv_encode_end,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
    .p.pix_fmts     = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
                                                     AV_PIX_FMT_NONE },
    .color_ranges   = AVCOL_RANGE_MPEG,
    .p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
}

Definition at line 375 of file h261enc.c.