intra4x4_pred.c File Reference

Functions for intra 4x4 prediction. More...

#include "global.h"
#include "intra4x4_pred.h"
#include "mb_access.h"
#include "image.h"

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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 int	intra4x4_dc_pred (ImageParameters *img, Macroblock *currMB, ColorPlane pl, int ioff, int joff)
static int	intra4x4_vert_pred (ImageParameters *img, Macroblock *currMB, ColorPlane pl, int ioff, int joff)
static int	intra4x4_hor_pred (ImageParameters *img, Macroblock *currMB, ColorPlane pl, int ioff, int joff)
static int	intra4x4_diag_down_right_pred (ImageParameters *img, Macroblock *currMB, ColorPlane pl, int ioff, int joff)
static int	intra4x4_diag_down_left_pred (ImageParameters *img, Macroblock *currMB, ColorPlane pl, int ioff, int joff)
static int	intra4x4_vert_right_pred (ImageParameters *img, Macroblock *currMB, ColorPlane pl, int ioff, int joff)
static int	intra4x4_vert_left_pred (ImageParameters *img, Macroblock *currMB, ColorPlane pl, int ioff, int joff)
static int	intra4x4_hor_up_pred (ImageParameters *img, Macroblock *currMB, ColorPlane pl, int ioff, int joff)
static int	intra4x4_hor_down_pred (ImageParameters *img, Macroblock *currMB, ColorPlane pl, int ioff, int joff)
int	intrapred (ImageParameters *img, Macroblock *currMB, ColorPlane pl, int ioff, int joff, int img_block_x, int img_block_y)

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Detailed Description

Functions for intra 4x4 prediction.

Author:

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

• Alexis Michael Tourapis <alexismt@ieee.org>

Definition in file intra4x4_pred.c.

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Function Documentation

static int intra4x4_dc_pred	(	ImageParameters *	img,
		Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)			[inline, static]

makes and returns 4x4 DC prediction mode

Returns:

DECODING_OK decoding of intraprediction mode was sucessfull

Parameters:

img	image parameters
ioff	pixel offset X within MB
joff	pixel offset Y within MB

Definition at line 57 of file intra4x4_pred.c.

References storable_picture::imgUV, and storable_picture::imgY.

Referenced by intrapred().

static int intra4x4_diag_down_left_pred	(	ImageParameters *	img,
		Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)			[inline, static]

makes and returns 4x4 diagonal down left prediction mode

Returns:

DECODING_OK decoding of intraprediction mode was sucessfull

Parameters:

img	image parameters
currMB	current macroblock
pl	current image plane
ioff	pixel offset X within MB
joff	pixel offset Y within MB

Definition at line 339 of file intra4x4_pred.c.

References storable_picture::imgUV, and storable_picture::imgY.

Referenced by intrapred().

static int intra4x4_diag_down_right_pred	(	ImageParameters *	img,
		Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)			[inline, static]

makes and returns 4x4 diagonal down right prediction mode

Returns:

DECODING_OK decoding of intraprediction mode was sucessfull

Parameters:

img	image parameters
currMB	current macroblock
pl	current image plane
ioff	pixel offset X within MB
joff	pixel offset Y within MB

Definition at line 250 of file intra4x4_pred.c.

References storable_picture::imgUV, and storable_picture::imgY.

Referenced by intrapred().

static int intra4x4_hor_down_pred	(	ImageParameters *	img,
		Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)			[inline, static]

makes and returns 4x4 horizontal down prediction mode

Returns:

DECODING_OK decoding of intraprediction mode was sucessfull

Parameters:

img	image parameters
currMB	current macroblock
pl	current image plane
ioff	pixel offset X within MB
joff	pixel offset Y within MB

Definition at line 672 of file intra4x4_pred.c.

References storable_picture::imgUV, and storable_picture::imgY.

Referenced by intrapred().

static int intra4x4_hor_pred	(	ImageParameters *	img,
		Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)			[inline, static]

makes and returns 4x4 horizontal prediction mode

Returns:

DECODING_OK decoding of intraprediction mode was sucessfull

Parameters:

img	image parameters
ioff	pixel offset X within MB
joff	pixel offset Y within MB

Definition at line 196 of file intra4x4_pred.c.

References storable_picture::imgUV, and storable_picture::imgY.

Referenced by intrapred().

static int intra4x4_hor_up_pred	(	ImageParameters *	img,
		Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)			[inline, static]

makes and returns 4x4 horizontal up prediction mode

Returns:

DECODING_OK decoding of intraprediction mode was sucessfull

Parameters:

img	image parameters
currMB	current macroblock
pl	current image plane
ioff	pixel offset X within MB
joff	pixel offset Y within MB

Definition at line 600 of file intra4x4_pred.c.

References storable_picture::imgUV, and storable_picture::imgY.

Referenced by intrapred().

static int intra4x4_vert_left_pred	(	ImageParameters *	img,
		Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)			[inline, static]

makes and returns 4x4 vertical left prediction mode

Returns:

DECODING_OK decoding of intraprediction mode was sucessfull

Parameters:

img	image parameters
currMB	current macroblock
pl	current image plane
ioff	pixel offset X within MB
joff	pixel offset Y within MB

Definition at line 514 of file intra4x4_pred.c.

References storable_picture::imgUV, and storable_picture::imgY.

Referenced by intrapred().

static int intra4x4_vert_pred	(	ImageParameters *	img,
		Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)			[inline, static]

makes and returns 4x4 vertical prediction mode

Returns:

DECODING_OK decoding of intraprediction mode was sucessfull

Parameters:

img	image parameters
currMB	current macroblock
pl	current image plane
ioff	pixel offset X within MB
joff	pixel offset Y within MB

Definition at line 151 of file intra4x4_pred.c.

References storable_picture::imgUV, and storable_picture::imgY.

Referenced by intrapred().

static int intra4x4_vert_right_pred	(	ImageParameters *	img,
		Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)			[inline, static]

makes and returns 4x4 vertical right prediction mode

Returns:

DECODING_OK decoding of intraprediction mode was sucessfull

Parameters:

img	image parameters
currMB	current macroblock
pl	current image plane
ioff	pixel offset X within MB
joff	pixel offset Y within MB

Definition at line 424 of file intra4x4_pred.c.

References storable_picture::imgUV, and storable_picture::imgY.

Referenced by intrapred().

int intrapred	(	ImageParameters *	img,
		Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff,
		int	img_block_x,
		int	img_block_y
	)

makes and returns 4x4 intra prediction blocks

Returns:

DECODING_OK decoding of intraprediction mode was sucessfull
SEARCH_SYNC search next sync element as errors while decoding occured

Parameters:

img	image parameters
currMB	current macroblock
pl	current image plane
ioff	pixel offset X within MB
joff	pixel offset Y within MB
img_block_x	location of block X, multiples of 4
img_block_y	location of block Y, multiples of 4

Definition at line 762 of file intra4x4_pred.c.

References intra4x4_dc_pred(), intra4x4_diag_down_left_pred(), intra4x4_diag_down_right_pred(), intra4x4_hor_down_pred(), intra4x4_hor_pred(), intra4x4_hor_up_pred(), intra4x4_vert_left_pred(), intra4x4_vert_pred(), and intra4x4_vert_right_pred().

Referenced by decode_one_component().

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