intra8x8.h File Reference

prototypes of 8x8 transform functions More...

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Functions
void	set_intrapred_8x8 (Macroblock *currMB, ColorPlane pl, int img_x, int img_y, int *left_available, int *up_available, int *up_left_available)
void	get_intrapred_8x8 (Macroblock *currMB, ColorPlane pl, int i8x8_mode, int left_available, int up_available)
void	LowPassForIntra8x8Pred (imgpel *PredPel, int block_up_left, int block_up, int block_left)

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Detailed Description

prototypes of 8x8 transform functions

Date:

9. October 2003

Author:

Main contributors (see contributors.h for copyright, address and affiliation details) Yuri Vatis Alexis Michael Tourapis

Definition in file intra8x8.h.

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Function Documentation

void get_intrapred_8x8	(	Macroblock *	currMB,
		ColorPlane	pl,
		int	i8x8_mode,
		int	left_available,
		int	up_available
	)

Generate 8x8 intra prediction block.

Input:

Starting point of current 8x8 block image posision

Output:

none

Definition at line 795 of file intra8x8.c.

References get_i8x8_dc(), get_i8x8_downleft(), get_i8x8_downright(), get_i8x8_hordown(), get_i8x8_horizontal(), get_i8x8_horup(), get_i8x8_vertical(), get_i8x8_vertleft(), get_i8x8_vertright(), macroblock::intra8x8_pred, slice::mpr_8x8, and macroblock::p_slice.

Referenced by Mode_Decision_for_8x8IntraBlocks_JM_High(), Mode_Decision_for_8x8IntraBlocks_JM_High444(), Mode_Decision_for_8x8IntraBlocks_JM_Low(), and Mode_Decision_for_8x8IntraBlocks_JM_Low444().

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void LowPassForIntra8x8Pred	(	imgpel *	PredPel,
		int	block_up_left,
		int	block_up,
		int	block_left
	)

Prefiltering for Intra8x8 prediction.

Definition at line 67 of file intra8x8.c.

Referenced by set_intrapred_8x8().

void set_intrapred_8x8	(	Macroblock *	currMB,
		ColorPlane	pl,
		int	img_x,
		int	img_y,
		int *	left_available,
		int *	up_available,
		int *	all_available
	)

Make intra 8x8 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 8x8 block image posision

Output:

none

Definition at line 665 of file intra8x8.c.

References img_par::dc_pred_value, macroblock::intra8x8_pred, LowPassForIntra8x8Pred(), storable_picture::p_curr_img, macroblock::p_Img, and inp_par_enc::UseConstrainedIntraPred.

Referenced by Mode_Decision_for_8x8IntraBlocks_JM_High(), Mode_Decision_for_8x8IntraBlocks_JM_High444(), Mode_Decision_for_8x8IntraBlocks_JM_Low(), and Mode_Decision_for_8x8IntraBlocks_JM_Low444().

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