ituh263enc.c File Reference

#include "config_components.h"
#include <limits.h>
#include "libavutil/attributes.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "mpegvideo.h"
#include "mpegvideodata.h"
#include "flvenc.h"
#include "mpegvideoenc.h"
#include "h263.h"
#include "h263enc.h"
#include "h263data.h"
#include "mathops.h"
#include "mpegutils.h"
#include "internal.h"

Go to the source code of this file.

Macros
#define	UNI_MPEG4_ENC_INDEX(last, run, level)   ((last)*128*64 + (run)*128 + (level))
#define	OFFSET(x)   offsetof(MpegEncContext, x)
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Functions
av_const int	ff_h263_aspect_to_info (AVRational aspect)
	Return the 4 bit value that specifies the given aspect ratio. More...
void	ff_h263_encode_picture_header (MpegEncContext *s)
void	ff_h263_encode_gob_header (MpegEncContext *s, int mb_line)
	Encode a group of blocks header. More...
void	ff_clean_h263_qscales (MpegEncContext *s)
	modify qscale so that encoding is actually possible in H.263 (limit difference to -2..2) More...
static void	h263_encode_block (MpegEncContext *s, int16_t *block, int n)
	Encode an 8x8 block. More...
static void	h263p_encode_umotion (PutBitContext *pb, int val)
static int	h263_pred_dc (MpegEncContext *s, int n, int16_t **dc_val_ptr)
void	ff_h263_encode_mb (MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
void	ff_h263_encode_motion (PutBitContext *pb, int val, int f_code)
static av_cold void	init_mv_penalty_and_fcode (void)
static av_cold void	init_uni_h263_rl_tab (const RLTable *rl, uint8_t *len_tab)
static av_cold void	h263_encode_init_static (void)
av_cold void	ff_h263_encode_init (MpegEncContext *s)
void	ff_h263_encode_mba (MpegEncContext *s)

Variables
static uint8_t	mv_penalty [MAX_FCODE+1][MAX_DMV *2+1]
	Table of number of bits a motion vector component needs. More...
static uint8_t	fcode_tab [MAX_MV *2+1]
	Minimal fcode that a motion vector component would need. More...
static uint8_t	umv_fcode_tab [MAX_MV *2+1]
	Minimal fcode that a motion vector component would need in umv. More...
static uint8_t	uni_h263_intra_aic_rl_len [64 *64 *2 *2]
static uint8_t	uni_h263_inter_rl_len [64 *64 *2 *2]
static const uint8_t	wrong_run [102]
static const int	dquant_code [5] = {1,0,9,2,3}
static const AVOption	h263_options []
static const AVClass	h263_class
const FFCodec	ff_h263_encoder
static const AVOption	h263p_options []
static const AVClass	h263p_class
const FFCodec	ff_h263p_encoder

Detailed Description

H.263 bitstream encoder.

Definition in file ituh263enc.c.

Macro Definition Documentation

UNI_MPEG4_ENC_INDEX

#define UNI_MPEG4_ENC_INDEX	(		last,
			run,
			level
	)		((last)*128*64 + (run)*128 + (level))

Definition at line 71 of file ituh263enc.c.

OFFSET

#define OFFSET

(

x

)

offsetof(MpegEncContext, x)

Definition at line 887 of file ituh263enc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 888 of file ituh263enc.c.

Function Documentation

ff_h263_aspect_to_info()

av_const int ff_h263_aspect_to_info

(

AVRational

aspect

)

Return the 4 bit value that specifies the given aspect ratio.

This may be one of the standard aspect ratios or it specifies that the aspect will be stored explicitly later.

Definition at line 94 of file ituh263enc.c.

Referenced by ff_h263_encode_picture_header(), and mpeg4_encode_vol_header().

ff_h263_encode_picture_header()

void ff_h263_encode_picture_header

(

MpegEncContext *

s

)

Definition at line 108 of file ituh263enc.c.

Referenced by encode_picture().

ff_h263_encode_gob_header()

void ff_h263_encode_gob_header	(	MpegEncContext *	s,
		int	mb_line
	)

Encode a group of blocks header.

Definition at line 246 of file ituh263enc.c.

Referenced by encode_thread().

ff_clean_h263_qscales()

void ff_clean_h263_qscales

(

MpegEncContext *

s

)

modify qscale so that encoding is actually possible in H.263 (limit difference to -2..2)

Definition at line 272 of file ituh263enc.c.

Referenced by estimate_qp(), and ff_clean_mpeg4_qscales().

h263_encode_block()

static void h263_encode_block ( MpegEncContext *  s, 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 305 of file ituh263enc.c.

Referenced by ff_h263_encode_mb().

h263p_encode_umotion()

static void h263p_encode_umotion ( PutBitContext *  pb, int  val  )

static

Definition at line 416 of file ituh263enc.c.

Referenced by ff_h263_encode_mb().

h263_pred_dc()

static int h263_pred_dc ( MpegEncContext *  s, int  n, int16_t **  dc_val_ptr  )

static

Definition at line 453 of file ituh263enc.c.

Referenced by ff_h263_encode_mb().

ff_h263_encode_mb()

void ff_h263_encode_mb	(	MpegEncContext *	s,
		int16_t	block[6][64],
		int	motion_x,
		int	motion_y
	)

Definition at line 494 of file ituh263enc.c.

Referenced by encode_mb_internal().

ff_h263_encode_motion()

void ff_h263_encode_motion	(	PutBitContext *	pb,
		int	val,
		int	f_code
	)

Definition at line 692 of file ituh263enc.c.

Referenced by ff_h263_encode_motion_vector(), and svq1_encode_plane().

init_mv_penalty_and_fcode()

static av_cold void init_mv_penalty_and_fcode ( void  )

static

Definition at line 720 of file ituh263enc.c.

Referenced by h263_encode_init_static().

init_uni_h263_rl_tab()

static av_cold void init_uni_h263_rl_tab ( const RLTable *  rl, uint8_t *  len_tab  )

static

Definition at line 762 of file ituh263enc.c.

Referenced by h263_encode_init_static().

h263_encode_init_static()

static av_cold void h263_encode_init_static ( void  )

static

Definition at line 803 of file ituh263enc.c.

Referenced by ff_h263_encode_init().

ff_h263_encode_init()

av_cold void ff_h263_encode_init

(

MpegEncContext *

s

)

Definition at line 816 of file ituh263enc.c.

Referenced by encode_init(), ff_mpv_encode_init(), and svq1_encode_init().

ff_h263_encode_mba()

void ff_h263_encode_mba

(

MpegEncContext *

s

)

Definition at line 876 of file ituh263enc.c.

Referenced by ff_h263_encode_gob_header(), ff_h263_encode_picture_header(), and ff_rv20_encode_picture_header().

Variable Documentation

mv_penalty

uint8_t mv_penalty[MAX_FCODE+1][MAX_DMV *2+1]

static

Table of number of bits a motion vector component needs.

Definition at line 52 of file ituh263enc.c.

Referenced by epzs_motion_search_internal(), estimate_motion_b(), ff_h263_encode_init(), get_mb_score(), h263_mv4_search(), hpel_motion_search(), init_mv_penalty_and_fcode(), interlaced_search(), qpel_motion_search(), and sab_diamond_search().

fcode_tab

uint8_t fcode_tab[MAX_MV *2+1]

static

Minimal fcode that a motion vector component would need.

Definition at line 57 of file ituh263enc.c.

Referenced by ff_get_best_fcode(), ff_h263_encode_init(), and init_mv_penalty_and_fcode().

umv_fcode_tab

uint8_t umv_fcode_tab[MAX_MV *2+1]

static

Minimal fcode that a motion vector component would need in umv.

All entries in this table are 1.

Definition at line 63 of file ituh263enc.c.

Referenced by ff_h263_encode_init(), and init_mv_penalty_and_fcode().

uni_h263_intra_aic_rl_len

uint8_t uni_h263_intra_aic_rl_len[64 *64 *2 *2]

static

Definition at line 67 of file ituh263enc.c.

Referenced by ff_h263_encode_init(), and h263_encode_init_static().

uni_h263_inter_rl_len

uint8_t uni_h263_inter_rl_len[64 *64 *2 *2]

static

Definition at line 68 of file ituh263enc.c.

Referenced by ff_h263_encode_init(), and h263_encode_init_static().

wrong_run

const uint8_t wrong_run[102]

static

Initial value:

= {
 1,  2,  3,  5,  4, 10,  9,  8,
11, 15, 17, 16, 23, 22, 21, 20,
19, 18, 25, 24, 27, 26, 11,  7,
 6,  1,  2, 13,  2,  2,  2,  2,
 6, 12,  3,  9,  1,  3,  4,  3,
 7,  4,  1,  1,  5,  5, 14,  6,
 1,  7,  1,  8,  1,  1,  1,  1,
10,  1,  1,  5,  9, 17, 25, 24,
29, 33, 32, 41,  2, 23, 28, 31,
 3, 22, 30,  4, 27, 40,  8, 26,
 6, 39,  7, 38, 16, 37, 15, 10,
11, 12, 13, 14,  1, 21, 20, 18,
19,  2,  1, 34, 35, 36
}

Definition at line 73 of file ituh263enc.c.

Referenced by h263_encode_block().

dquant_code

const int dquant_code[5] = {1,0,9,2,3}

static

Definition at line 298 of file ituh263enc.c.

Referenced by ff_h263_encode_mb().

h263_options

const AVOption h263_options[]

static

Initial value:

= {
    { "obmc",         "use overlapped block motion compensation.", OFFSET(obmc), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
    { "mb_info",      "emit macroblock info for RFC 2190 packetization, the parameter value is the maximum payload size", OFFSET(mb_info), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
    FF_MPV_COMMON_OPTS
    FF_MPV_COMMON_MOTION_EST_OPTS
    { NULL },
}

Definition at line 889 of file ituh263enc.c.

h263_class

const AVClass h263_class

static

Initial value:

= {
    .class_name = "H.263 encoder",
    .item_name  = av_default_item_name,
    .option     = h263_options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 897 of file ituh263enc.c.

ff_h263_encoder

const FFCodec ff_h263_encoder

Initial value:

= {
    .p.name         = "h263",
    CODEC_LONG_NAME("H.263 / H.263-1996"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_H263,
    .p.pix_fmts = (const enum AVPixelFormat[]){AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE},
    .p.priv_class   = &h263_class,
    .p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
    .priv_data_size = sizeof(MpegEncContext),
    .init           = ff_mpv_encode_init,
    FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
    .close          = ff_mpv_encode_end,
}

Definition at line 904 of file ituh263enc.c.

h263p_options

const AVOption h263p_options[]

static

Initial value:

= {
    { "umv",        "Use unlimited motion vectors.",    OFFSET(umvplus),       AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
    { "aiv",        "Use alternative inter VLC.",       OFFSET(alt_inter_vlc), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
    { "obmc",       "use overlapped block motion compensation.", OFFSET(obmc), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
    { "structured_slices", "Write slice start position at every GOB header instead of just GOB number.", OFFSET(h263_slice_structured), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE},
    FF_MPV_COMMON_OPTS
    FF_MPV_COMMON_MOTION_EST_OPTS
    { NULL },
}

Definition at line 919 of file ituh263enc.c.

h263p_class

const AVClass h263p_class

static

Initial value:

= {
    .class_name = "H.263p encoder",
    .item_name  = av_default_item_name,
    .option     = h263p_options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 928 of file ituh263enc.c.

ff_h263p_encoder

const FFCodec ff_h263p_encoder

Initial value:

= {
    .p.name         = "h263p",
    CODEC_LONG_NAME("H.263+ / H.263-1998 / H.263 version 2"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_H263P,
    .p.pix_fmts     = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
    .p.priv_class   = &h263p_class,
    .p.capabilities = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
    .priv_data_size = sizeof(MpegEncContext),
    .init           = ff_mpv_encode_init,
    FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
    .close          = ff_mpv_encode_end,
}

Definition at line 935 of file ituh263enc.c.