libavcodec/h264_mvpred.h File Reference

H.264 / AVC / MPEG4 part10 motion vector predicion. More...

#include "internal.h"
#include "avcodec.h"
#include "h264.h"
#include <assert.h>

Go to the source code of this file.

Defines
#define	SET_DIAG_MV(MV_OP, REF_OP, XY, Y4)
Functions
static int	fetch_diagonal_mv (H264Context *h, const int16_t **C, int i, int list, int part_width)
static void	pred_motion (H264Context *const h, int n, int part_width, int list, int ref, int *const mx, int *const my)
	gets the predicted MV.
static void	pred_16x8_motion (H264Context *const h, int n, int list, int ref, int *const mx, int *const my)
	gets the directionally predicted 16x8 MV.
static void	pred_8x16_motion (H264Context *const h, int n, int list, int ref, int *const mx, int *const my)
	gets the directionally predicted 8x16 MV.
static void	pred_pskip_motion (H264Context *const h, int *const mx, int *const my)

---

Detailed Description

H.264 / AVC / MPEG4 part10 motion vector predicion.

Author:

Michael Niedermayer <michaelni@gmx.at>

Definition in file h264_mvpred.h.

---

Define Documentation

#define SET_DIAG_MV	(	MV_OP,
		REF_OP,
		XY,
		Y4		)

Value:

const int xy = XY, y4 = Y4;\
                const int mb_type = mb_types[xy+(y4>>2)*s->mb_stride];\
                if(!USES_LIST(mb_type,list))\
                    return LIST_NOT_USED;\
                mv = s->current_picture_ptr->motion_val[list][h->mb2b_xy[xy]+3 + y4*h->b_stride];\
                h->mv_cache[list][scan8[0]-2][0] = mv[0];\
                h->mv_cache[list][scan8[0]-2][1] = mv[1] MV_OP;\
                return s->current_picture_ptr->ref_index[list][4*xy+1 + (y4&~1)] REF_OP;

Referenced by fetch_diagonal_mv().

---

Function Documentation

static int fetch_diagonal_mv	(	H264Context *	h,
		const int16_t **	C,
		int	i,
		int	list,
		int	part_width
	)			[inline, static]

Definition at line 38 of file h264_mvpred.h.

Referenced by pred_8x16_motion(), and pred_motion().

static void pred_16x8_motion	(	H264Context *const	h,
		int	n,
		int	list,
		int	ref,
		int *const	mx,
		int *const	my
	)			[inline, static]

gets the directionally predicted 16x8 MV.

Parameters:

	n	the block index
	mx	the x component of the predicted motion vector
	my	the y component of the predicted motion vector

Definition at line 151 of file h264_mvpred.h.

Referenced by ff_h264_decode_mb_cabac(), and ff_h264_decode_mb_cavlc().

static void pred_8x16_motion	(	H264Context *const	h,
		int	n,
		int	list,
		int	ref,
		int *const	mx,
		int *const	my
	)			[inline, static]

gets the directionally predicted 8x16 MV.

Parameters:

	n	the block index
	mx	the x component of the predicted motion vector
	my	the y component of the predicted motion vector

Definition at line 186 of file h264_mvpred.h.

Referenced by ff_h264_decode_mb_cabac(), and ff_h264_decode_mb_cavlc().

static void pred_motion	(	H264Context *const	h,
		int	n,
		int	part_width,
		int	list,
		int	ref,
		int *const	mx,
		int *const	my
	)			[inline, static]

gets the predicted MV.

Parameters:

	n	the block index
	part_width	the width of the partition (4, 8,16) -> (1, 2, 4)
	mx	the x component of the predicted motion vector
	my	the y component of the predicted motion vector

Definition at line 96 of file h264_mvpred.h.

Referenced by ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), pred_16x8_motion(), pred_8x16_motion(), pred_pskip_motion(), and svq3_mc_dir().

static void pred_pskip_motion	(	H264Context *const	h,
		int *const	mx,
		int *const	my
	)			[inline, static]

Definition at line 217 of file h264_mvpred.h.