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 "mpegvideodata.h"
#include "mpegvideoenc.h"

Go to the source code of this file.

Data Structures
struct	H261EncContext

Macros
#define	UNI_ENC_INDEX(last, run, level)   ((last)*128*64 + (run)*128 + (level))

Functions
int	ff_h261_get_picture_format (int width, int height)
void	ff_h261_encode_picture_header (MpegEncContext *s, int picture_number)
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	init_uni_h261_rl_tab (const RLTable *rl, uint8_t *len_tab)
static av_cold void	h261_encode_init_static (void)
av_cold void	ff_h261_encode_init (MpegEncContext *s)

Variables
static uint8_t	uni_h261_rl_len [64 *64 *2 *2]
const FFCodec	ff_h261_encoder

Detailed Description

H.261 encoder.

Definition in file h261enc.c.

Macro Definition Documentation

UNI_ENC_INDEX

#define UNI_ENC_INDEX	(		last,
			run,
			level
	)		((last)*128*64 + (run)*128 + (level))

Definition at line 41 of file h261enc.c.

Function Documentation

ff_h261_get_picture_format()

int ff_h261_get_picture_format	(	int	width,
		int	height
	)

Definition at line 51 of file h261enc.c.

Referenced by ff_h261_encode_picture_header(), ff_h261_reorder_mb_index(), ff_mpv_encode_init(), and h261_encode_gob_header().

ff_h261_encode_picture_header()

void ff_h261_encode_picture_header	(	MpegEncContext *	s,
		int	picture_number
	)

Definition at line 64 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 102 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 119 of file h261enc.c.

Referenced by encode_thread().

h261_encode_motion()

static void h261_encode_motion ( PutBitContext *  pb, int  val  )

static

Definition at line 146 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 164 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 179 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 247 of file h261enc.c.

Referenced by encode_mb_internal().

init_uni_h261_rl_tab()

static av_cold void init_uni_h261_rl_tab ( const RLTable *  rl, uint8_t *  len_tab  )

static

Definition at line 338 of file h261enc.c.

Referenced by h261_encode_init_static().

h261_encode_init_static()

static av_cold void h261_encode_init_static ( void  )

static

Definition at line 377 of file h261enc.c.

Referenced by ff_h261_encode_init().

ff_h261_encode_init()

av_cold void ff_h261_encode_init

(

MpegEncContext *

s

)

Definition at line 385 of file h261enc.c.

Referenced by ff_mpv_encode_init().

Variable Documentation

uni_h261_rl_len

uint8_t uni_h261_rl_len[64 *64 *2 *2]

static

Definition at line 40 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",
    .p.long_name    = NULL_IF_CONFIG_SMALL("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_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
    .p.pix_fmts     = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
                                                     AV_PIX_FMT_NONE },
}

Definition at line 403 of file h261enc.c.