intra4x4.h File Reference

intra 4x4 functions More...

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Functions
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 functions

Author:

• Alexis Michael Tourapis <alexismt@ieee.org>

Definition in file intra4x4.h.

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Function Documentation

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().