h263.h File Reference

#include <stdint.h>
#include "libavutil/rational.h"
#include "get_bits.h"
#include "mpegvideo.h"
#include "h263data.h"
#include "rl.h"

Go to the source code of this file.

Macros
#define	FF_ASPECT_EXTENDED   15
#define	INT_BIT   (CHAR_BIT * sizeof(int))
#define	INTRA_MCBPC_VLC_BITS   6
#define	INTER_MCBPC_VLC_BITS   7
#define	CBPY_VLC_BITS   6
#define	TEX_VLC_BITS   9
#define	H263_GOB_HEIGHT(h)   ((h) <= 400 ? 1 : (h) <= 800 ? 2 : 4)

Functions
int	ff_h263_decode_motion (MpegEncContext *s, int pred, int f_code)
av_const int	ff_h263_aspect_to_info (AVRational aspect)
	Return the 4 bit value that specifies the given aspect ratio. More...
int	ff_h263_decode_init (AVCodecContext *avctx)
int	ff_h263_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
int	ff_h263_decode_end (AVCodecContext *avctx)
void	ff_h263_encode_mb (MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
void	ff_h263_encode_picture_header (MpegEncContext *s, int picture_number)
void	ff_h263_encode_gob_header (MpegEncContext *s, int mb_line)
	Encode a group of blocks header. More...
int16_t *	ff_h263_pred_motion (MpegEncContext *s, int block, int dir, int *px, int *py)
void	ff_h263_encode_init (MpegEncContext *s)
void	ff_h263_decode_init_vlc (void)
int	ff_h263_decode_picture_header (MpegEncContext *s)
int	ff_h263_decode_gob_header (MpegEncContext *s)
void	ff_h263_update_motion_val (MpegEncContext *s)
void	ff_h263_loop_filter (MpegEncContext *s)
int	ff_h263_decode_mba (MpegEncContext *s)
void	ff_h263_encode_mba (MpegEncContext *s)
void	ff_init_qscale_tab (MpegEncContext *s)
	init s->current_picture.qscale_table from s->lambda_table More...
int	ff_h263_pred_dc (MpegEncContext *s, int n, int16_t **dc_val_ptr)
void	ff_h263_pred_acdc (MpegEncContext *s, int16_t *block, int n)
void	ff_h263_show_pict_info (MpegEncContext *s)
	Print picture info if FF_DEBUG_PICT_INFO is set. More...
int	ff_intel_h263_decode_picture_header (MpegEncContext *s)
int	ff_h263_decode_mb (MpegEncContext *s, int16_t block[6][64])
int av_const	h263_get_picture_format (int width, int height)
	Return the value of the 3-bit "source format" syntax element. 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...
int	ff_h263_resync (MpegEncContext *s)
	Decode the group of blocks / video packet header / slice header (MPEG-4 Studio). More...
void	ff_h263_encode_motion (PutBitContext *pb, int val, int f_code)
static int	h263_get_motion_length (int val, int f_code)
static void	ff_h263_encode_motion_vector (MpegEncContext *s, int x, int y, int f_code)
static int	get_p_cbp (MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)

Variables
VLC	ff_h263_intra_MCBPC_vlc
VLC	ff_h263_inter_MCBPC_vlc
VLC	ff_h263_cbpy_vlc
enum AVPixelFormat	ff_h263_hwaccel_pixfmt_list_420 []

Macro Definition Documentation

#define FF_ASPECT_EXTENDED   15

Definition at line 30 of file h263.h.

Referenced by decode_studiovisualobject(), decode_vol_header(), ff_h263_aspect_to_info(), ff_h263_decode_picture_header(), ff_h263_encode_picture_header(), and mpeg4_encode_vol_header().

#define INT_BIT   (CHAR_BIT * sizeof(int))

Definition at line 31 of file h263.h.

Referenced by h263_get_motion_length().

#define INTRA_MCBPC_VLC_BITS   6

Definition at line 37 of file h263.h.

Referenced by ff_h263_decode_init_vlc(), ff_h263_decode_mb(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), and msmpeg4v12_decode_mb().

#define INTER_MCBPC_VLC_BITS   7

Definition at line 38 of file h263.h.

Referenced by ff_h263_decode_init_vlc(), ff_h263_decode_mb(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), msmpeg4v12_decode_mb(), and preview_obmc().

#define CBPY_VLC_BITS   6

Definition at line 39 of file h263.h.

Referenced by ff_h263_decode_init_vlc(), ff_h263_decode_mb(), mpeg4_decode_mb(), mpeg4_decode_partition_b(), msmpeg4v12_decode_mb(), and preview_obmc().

#define TEX_VLC_BITS   9

Definition at line 40 of file h263.h.

#define H263_GOB_HEIGHT

(

h

)

((h) <= 400 ? 1 : (h) <= 800 ? 2 : 4)

Definition at line 42 of file h263.h.

Referenced by encode_thread(), ff_h263_decode_frame(), and vaapi_mpeg4_start_frame().

Function Documentation

int ff_h263_decode_motion	(	MpegEncContext *	s,
		int	pred,
		int	f_code
	)

Definition at line 270 of file ituh263dec.c.

Referenced by ff_h263_decode_mb(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), and preview_obmc().

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 89 of file ituh263enc.c.

Referenced by ff_h263_encode_picture_header(), and mpeg4_encode_vol_header().

int ff_h263_decode_init

(

AVCodecContext *

avctx

)

Definition at line 68 of file h263dec.c.

Referenced by decode_init(), and ff_msmpeg4_decode_init().

int ff_h263_decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		int *	got_frame,
		AVPacket *	avpkt
	)

Definition at line 420 of file h263dec.c.

int ff_h263_decode_end

(

AVCodecContext *

avctx

)

Definition at line 155 of file h263dec.c.

Referenced by decode_end(), and wmv2_decode_end().

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

Definition at line 447 of file ituh263enc.c.

Referenced by encode_mb_internal().

void ff_h263_encode_picture_header	(	MpegEncContext *	s,
		int	picture_number
	)

Definition at line 103 of file ituh263enc.c.

Referenced by encode_picture().

void ff_h263_encode_gob_header	(	MpegEncContext *	s,
		int	mb_line
	)

Encode a group of blocks header.

Definition at line 240 of file ituh263enc.c.

Referenced by encode_thread().

int16_t* ff_h263_pred_motion	(	MpegEncContext *	s,
		int	block,
		int	dir,
		int *	px,
		int *	py
	)

Definition at line 307 of file h263.c.

Referenced by ff_h263_decode_mb(), ff_h263_encode_mb(), ff_mpeg4_encode_mb(), ff_msmpeg4_encode_mb(), ff_wmv2_encode_mb(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), msmpeg4v12_decode_mb(), msmpeg4v34_decode_mb(), preview_obmc(), svq1_encode_plane(), and write_mb_info().

void ff_h263_encode_init

(

MpegEncContext *

s

)

Definition at line 761 of file ituh263enc.c.

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

void ff_h263_decode_init_vlc

(

void

)

Definition at line 108 of file ituh263dec.c.

Referenced by ff_h263_decode_init(), and rv10_decode_init().

int ff_h263_decode_picture_header

(

MpegEncContext *

s

)

Definition at line 999 of file ituh263dec.c.

Referenced by ff_h263_decode_frame().

int ff_h263_decode_gob_header

(

MpegEncContext *

s

)

void ff_h263_update_motion_val

(

MpegEncContext *

s

)

Definition at line 42 of file h263.c.

Referenced by decode_slice(), encode_thread(), and rv10_decode_packet().

void ff_h263_loop_filter

(

MpegEncContext *

s

)

Definition at line 135 of file h263.c.

Referenced by decode_slice(), encode_thread(), and rv10_decode_packet().

int ff_h263_decode_mba

(

MpegEncContext *

s

)

Definition at line 139 of file ituh263dec.c.

Referenced by ff_h263_decode_picture_header(), h263_decode_gob_header(), and rv20_decode_picture_header().

void ff_h263_encode_mba

(

MpegEncContext *

s

)

Definition at line 825 of file ituh263enc.c.

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

void ff_init_qscale_tab

(

MpegEncContext *

s

)

init s->current_picture.qscale_table from s->lambda_table

Definition at line 218 of file mpegvideo_enc.c.

Referenced by estimate_qp(), and ff_clean_h263_qscales().

int ff_h263_pred_dc	(	MpegEncContext *	s,
		int	n,
		int16_t **	dc_val_ptr
	)

Definition at line 94 of file h263.c.

Referenced by ff_h263_encode_mb().

void ff_h263_pred_acdc	(	MpegEncContext *	s,
		int16_t *	block,
		int	n
	)

Definition at line 220 of file h263.c.

Referenced by h263_decode_block().

void ff_h263_show_pict_info

(

MpegEncContext *

s

)

Print picture info if FF_DEBUG_PICT_INFO is set.

Definition at line 76 of file ituh263dec.c.

Referenced by ff_h263_decode_picture_header(), and ff_intel_h263_decode_picture_header().

int ff_intel_h263_decode_picture_header

(

MpegEncContext *

s

)

Definition at line 27 of file intelh263dec.c.

Referenced by ff_h263_decode_frame().

int ff_h263_decode_mb	(	MpegEncContext *	s,
		int16_t	block[6][64]
	)

Definition at line 697 of file ituh263dec.c.

Referenced by ff_h263_decode_init(), and rv10_decode_packet().

int av_const h263_get_picture_format	(	int	width,
		int	height
	)

Return the value of the 3-bit "source format" syntax element.

This represents some standard picture dimensions or indicates that width&height are explicitly stored later.

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 266 of file ituh263enc.c.

Referenced by estimate_qp(), and ff_clean_mpeg4_qscales().

int ff_h263_resync

(

MpegEncContext *

s

)

Decode the group of blocks / video packet header / slice header (MPEG-4 Studio).

Returns

bit position of the resync_marker, or <0 if none was found

Definition at line 213 of file ituh263dec.c.

Referenced by ff_h263_decode_frame().

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

Definition at line 646 of file ituh263enc.c.

Referenced by ff_h263_encode_motion_vector(), and svq1_encode_plane().

static int h263_get_motion_length ( int  val, int  f_code  )

inlinestatic

Definition at line 99 of file h263.h.

Referenced by ff_h263_encode_motion_vector().

static void ff_h263_encode_motion_vector ( MpegEncContext *  s, int  x, int  y, int  f_code  )

inlinestatic

Definition at line 116 of file h263.h.

Referenced by ff_h263_encode_mb(), and ff_mpeg4_encode_mb().

static int get_p_cbp ( MpegEncContext *  s, int16_t  block[6][64], int  motion_x, int  motion_y  )

inlinestatic

Definition at line 127 of file h263.h.

Referenced by ff_h263_encode_mb(), and ff_mpeg4_encode_mb().

Variable Documentation

VLC ff_h263_intra_MCBPC_vlc

Definition at line 98 of file ituh263dec.c.

Referenced by mpeg4_decode_mb(), mpeg4_decode_partition_a(), and msmpeg4v12_decode_mb().

VLC ff_h263_inter_MCBPC_vlc

Definition at line 99 of file ituh263dec.c.

Referenced by mpeg4_decode_mb(), mpeg4_decode_partition_a(), and msmpeg4v12_decode_mb().

VLC ff_h263_cbpy_vlc

Definition at line 100 of file ituh263dec.c.

Referenced by mpeg4_decode_mb(), mpeg4_decode_partition_b(), and msmpeg4v12_decode_mb().

enum AVPixelFormat ff_h263_hwaccel_pixfmt_list_420[]

Definition at line 725 of file h263dec.c.