intra4x4.c File Reference

Intra 4x4 mode functions. More...

#include "contributors.h"
#include "global.h"
#include "image.h"
#include "mb_access.h"

Include dependency graph for intra4x4.c:

Go to the source code of this file.

Defines
#define	P_X   (PredPel[0])
#define	P_A   (PredPel[1])
#define	P_B   (PredPel[2])
#define	P_C   (PredPel[3])
#define	P_D   (PredPel[4])
#define	P_E   (PredPel[5])
#define	P_F   (PredPel[6])
#define	P_G   (PredPel[7])
#define	P_H   (PredPel[8])
#define	P_I   (PredPel[9])
#define	P_J   (PredPel[10])
#define	P_K   (PredPel[11])
#define	P_L   (PredPel[12])
Functions
static void	get_i4x4_vertical (imgpel **cur_pred, imgpel *PredPel)
static void	get_i4x4_horizontal (imgpel **cur_pred, imgpel *PredPel)
static void	get_i4x4_dc (imgpel **cur_pred, imgpel *PredPel, int left_available, int up_available)
static void	get_i4x4_downleft (imgpel **cur_pred, imgpel *PredPel)
static void	get_i4x4_downright (imgpel **cur_pred, imgpel *PredPel)
static void	get_i4x4_vertleft (imgpel **cur_pred, imgpel *PredPel)
static void	get_i4x4_vertright (imgpel **cur_pred, imgpel *PredPel)
static void	get_i4x4_hordown (imgpel **cur_pred, imgpel *PredPel)
static void	get_i4x4_horup (imgpel **cur_pred, imgpel *PredPel)
void	set_intrapred_4x4 (Macroblock *currMB, ColorPlane pl, int img_x, int img_y, int *left_available, int *up_available, int *all_available)
void	get_intrapred_4x4 (Macroblock *currMB, ColorPlane pl, int i4x4_mode, int img_x, int img_y, int left_available, int up_available)

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Detailed Description

Intra 4x4 mode functions.

Author:

Main contributors (see contributors.h for copyright, address and affiliation details)

• Alexis Michael Tourapis <alexismt@ieee.org>

Definition in file intra4x4.c.

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Function Documentation

static void get_i4x4_dc	(	imgpel **	cur_pred,
		imgpel *	PredPel,
		int	left_available,
		int	up_available
	)			[inline, static]

DC 4x4 Prediction.

Definition at line 87 of file intra4x4.c.

Referenced by get_intrapred_4x4().

static void get_i4x4_downleft	(	imgpel **	cur_pred,
		imgpel *	PredPel
	)			[inline, static]

Diagonal Down Left 4x4 Prediction.

Definition at line 124 of file intra4x4.c.

Referenced by get_intrapred_4x4().

static void get_i4x4_downright	(	imgpel **	cur_pred,
		imgpel *	PredPel
	)			[inline, static]

Diagonal Down Right 4x4 Prediction.

Definition at line 150 of file intra4x4.c.

Referenced by get_intrapred_4x4().

static void get_i4x4_hordown	(	imgpel **	cur_pred,
		imgpel *	PredPel
	)			[inline, static]

Horizontal Down 4x4 Prediction.

Definition at line 229 of file intra4x4.c.

Referenced by get_intrapred_4x4().

static void get_i4x4_horizontal	(	imgpel **	cur_pred,
		imgpel *	PredPel
	)			[inline, static]

Horizontal 4x4 Prediction.

Definition at line 68 of file intra4x4.c.

Referenced by get_intrapred_4x4().

static void get_i4x4_horup	(	imgpel **	cur_pred,
		imgpel *	PredPel
	)			[inline, static]

Horizontal Up 4x4 Prediction.

Definition at line 256 of file intra4x4.c.

Referenced by get_intrapred_4x4().

static void get_i4x4_vertical	(	imgpel **	cur_pred,
		imgpel *	PredPel
	)			[inline, static]

Vertical 4x4 Prediction.

Definition at line 53 of file intra4x4.c.

Referenced by get_intrapred_4x4().

static void get_i4x4_vertleft	(	imgpel **	cur_pred,
		imgpel *	PredPel
	)			[inline, static]

Vertical Left 4x4 Prediction.

Definition at line 177 of file intra4x4.c.

Referenced by get_intrapred_4x4().

static void get_i4x4_vertright	(	imgpel **	cur_pred,
		imgpel *	PredPel
	)			[inline, static]

Vertical Right 4x4 Prediction.

Definition at line 203 of file intra4x4.c.

Referenced by get_intrapred_4x4().

void get_intrapred_4x4	(	Macroblock *	currMB,
		ColorPlane	pl,
		int	i4x4_mode,
		int	img_x,
		int	img_y,
		int	left_available,
		int	up_available
	)

Generate 4x4 intra prediction block.

Input:

Starting point of current 4x4 block image posision

Output:

none

Definition at line 410 of file intra4x4.c.

References get_i4x4_dc(), get_i4x4_downleft(), get_i4x4_downright(), get_i4x4_hordown(), get_i4x4_horizontal(), get_i4x4_horup(), get_i4x4_vertical(), get_i4x4_vertleft(), get_i4x4_vertright(), macroblock::intra4x4_pred, slice::mpr_4x4, and macroblock::p_slice.

Referenced by Mode_Decision_for_4x4IntraBlocks_JM_High(), Mode_Decision_for_4x4IntraBlocks_JM_High444(), Mode_Decision_for_4x4IntraBlocks_JM_Low(), and Mode_Decision_for_4x4IntraBlocks_JM_Low444().

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void set_intrapred_4x4	(	Macroblock *	currMB,
		ColorPlane	pl,
		int	img_x,
		int	img_y,
		int *	left_available,
		int *	up_available,
		int *	all_available
	)

Make intra 4x4 prediction according to all 9 prediction modes. The routine uses left and upper neighbouring points from previous coded blocks to do this (if available). Notice that inaccessible neighbouring points are signalled with a negative value in the predmode array .

Input:

Starting point of current 4x4 block image posision

Output:

none

Definition at line 292 of file intra4x4.c.

References img_par::dc_pred_value, macroblock::intra4x4_pred, storable_picture::p_curr_img, macroblock::p_Img, and inp_par_enc::UseConstrainedIntraPred.

Referenced by Mode_Decision_for_4x4IntraBlocks_JM_High(), Mode_Decision_for_4x4IntraBlocks_JM_High444(), Mode_Decision_for_4x4IntraBlocks_JM_Low(), and Mode_Decision_for_4x4IntraBlocks_JM_Low444().