h261enc.c File Reference

H.261 encoder. More...

#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "avcodec.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "h263.h"
#include "h261.h"

Go to the source code of this file.

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.
void	ff_h261_reorder_mb_index (MpegEncContext *s)
static void	h261_encode_motion (H261Context *h, int val)
static int	get_cbp (MpegEncContext *s, int16_t block[6][64])
static void	h261_encode_block (H261Context *h, int16_t *block, int n)
	Encode an 8x8 block.
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 (RLTable *rl, uint32_t *bits_tab, uint8_t *len_tab)
av_cold void	ff_h261_encode_init (MpegEncContext *s)

Variables
static uint8_t	uni_h261_rl_len [64 *64 *2 *2]
AVCodec	ff_h261_encoder

Detailed Description

H.261 encoder.

Definition in file h261enc.c.

Macro Definition Documentation

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

Definition at line 37 of file h261enc.c.

Referenced by init_uni_h261_rl_tab().

Function Documentation

int ff_h261_get_picture_format	(	int	width,
		int	height
	)

Definition at line 39 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().

void ff_h261_encode_picture_header	(	MpegEncContext *	s,
		int	picture_number
	)

Definition at line 52 of file h261enc.c.

Referenced by encode_picture().

static void h261_encode_gob_header ( MpegEncContext *  s, int  mb_line  )

static

Encode a group of blocks header.

Definition at line 90 of file h261enc.c.

Referenced by ff_h261_reorder_mb_index().

void ff_h261_reorder_mb_index

(

MpegEncContext *

s

)

Definition at line 107 of file h261enc.c.

Referenced by encode_thread().

static void h261_encode_motion ( H261Context *  h, int  val  )

static

Definition at line 134 of file h261enc.c.

Referenced by ff_h261_encode_mb().

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

inlinestatic

Definition at line 153 of file h261enc.c.

Referenced by ff_h261_encode_mb().

static void h261_encode_block ( H261Context *  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 168 of file h261enc.c.

Referenced by 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 236 of file h261enc.c.

Referenced by encode_mb_internal().

static av_cold void init_uni_h261_rl_tab ( RLTable *  rl, uint32_t *  bits_tab, uint8_t *  len_tab  )

static

Definition at line 324 of file h261enc.c.

Referenced by ff_h261_encode_init().

av_cold void ff_h261_encode_init

(

MpegEncContext *

s

)

Definition at line 364 of file h261enc.c.

Referenced by ff_mpv_encode_init().

Variable Documentation

uint8_t uni_h261_rl_len[64 *64 *2 *2]

static

Definition at line 36 of file h261enc.c.

Referenced by ff_h261_encode_init().

AVCodec ff_h261_encoder

Initial value:

= {
    .name           = "h261",
    .long_name      = NULL_IF_CONFIG_SMALL("H.261"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_H261,
    .priv_data_size = sizeof(H261Context),
    .init           = ff_mpv_encode_init,
    .encode2        = ff_mpv_encode_picture,
    .close          = ff_mpv_encode_end,
    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
                                                     AV_PIX_FMT_NONE },
    .priv_class     = &h261_class,
}

Definition at line 382 of file h261enc.c.