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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"
#include "mpegvideodata.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. More...
 
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. 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 (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]
 
static const AVClass h261_class
 
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 38 of file h261enc.c.

Referenced by init_uni_h261_rl_tab().

Function Documentation

int ff_h261_get_picture_format ( int  width,
int  height 
)
void ff_h261_encode_picture_header ( MpegEncContext s,
int  picture_number 
)

Definition at line 53 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 91 of file h261enc.c.

Referenced by ff_h261_reorder_mb_index().

void ff_h261_reorder_mb_index ( MpegEncContext s)

Definition at line 108 of file h261enc.c.

Referenced by encode_thread().

static void h261_encode_motion ( H261Context h,
int  val 
)
static

Definition at line 135 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 154 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
blockthe 8x8 block
nblock index (0-3 are luma, 4-5 are chroma)

Definition at line 169 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 237 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 325 of file h261enc.c.

Referenced by ff_h261_encode_init().

av_cold void ff_h261_encode_init ( MpegEncContext s)

Definition at line 365 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 37 of file h261enc.c.

Referenced by ff_h261_encode_init().

const AVClass h261_class
static
Initial value:
= {
.class_name = "h261 encoder",
.item_name = av_default_item_name,
}
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:193
const AVOption ff_mpv_generic_options[]
Definition: mpegvideo_enc.c:85

Definition at line 381 of file h261enc.c.

AVCodec ff_h261_encoder
Initial value:
= {
.name = "h261",
.long_name = NULL_IF_CONFIG_SMALL("H.261"),
.priv_data_size = sizeof(H261Context),
.priv_class = &h261_class,
}
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
H261Context.
Definition: h261.h:37
static const AVClass h261_class
Definition: h261enc.c:381
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
int ff_mpv_encode_init(AVCodecContext *avctx)
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
int ff_mpv_encode_end(AVCodecContext *avctx)
int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60

Definition at line 388 of file h261enc.c.