mc_prediction.c File Reference

Motion Compensation. More...

#include "contributors.h"
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
#include <math.h>
#include "block.h"
#include "global.h"
#include "macroblock.h"
#include "mc_prediction.h"
#include "refbuf.h"
#include "image.h"
#include "mb_access.h"
#include "me_distortion.h"

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Functions
static void	MCWeightedBiPrediction (imgpel **mb_pred, imgpel *l0pred, imgpel *l1pred, int block_size_y, int block_x, int block_size_x, int max_imgpel_value, short wbp0, short wbp1, short offset, short wp_round, short weight_denom)
static void	MCWeightedPrediction (imgpel **mb_pred, imgpel *lpred, int block_size_y, int block_x, int block_size_x, int max_imgpel_value, short wp, short offset, short wp_round, short weight_denom)
static void	MCBiPrediction (imgpel **mb_pred, imgpel *l0pred, imgpel *l1pred, int block_size_y, int block_x, int block_size_x)
static void	MCPrediction (imgpel **mb_pred, imgpel *lpred, int block_size_y, int block_x, int block_size_x)
static void	OneComponentLumaPrediction (ImageParameters *p_Img, imgpel *mpred, int pic_pix_x, int pic_pix_y, int block_size_x, int block_size_y, StorablePicture *list)
void	luma_prediction (Macroblock *currMB, int block_x, int block_y, int block_size_x, int block_size_y, int p_dir, int list_mode[2], char *ref_idx, short bipred_me)
void	luma_prediction_bi (Macroblock *currMB, int block_x, int block_y, int block_size_x, int block_size_y, int l0_mode, int l1_mode, short l0_ref_idx, short l1_ref_idx, int list)
void	OneComponentChromaPrediction4x4_regenerate (Macroblock *currMB, imgpel *mpred, int block_c_x, int block_c_y, short ***mv, StorablePicture *list, int uv)
void	OneComponentChromaPrediction4x4_retrieve (Macroblock *currMB, imgpel *mpred, int block_c_x, int block_c_y, short ***mv, StorablePicture *list, int uv)
static void	OneComponentChromaPrediction (ImageParameters *p_Img, imgpel *mpred, int pic_pix_x, int pic_pix_y, int block_size_x, int block_size_y, StorablePicture *list, int uv)
static void	IntraChromaPrediction4x4 (Macroblock *currMB, int uv, int block_x, int block_y)
void	chroma_prediction (Macroblock *currMB, int uv, int block_x, int block_y, int block_size_x, int block_size_y, int p_dir, int l0_mode, int l1_mode, short l0_ref_idx, short l1_ref_idx, short bipred_me)
void	chroma_prediction_4x4 (Macroblock *currMB, int uv, int block_x, int block_y, int p_dir, int l0_mode, int l1_mode, short l0_ref_idx, short l1_ref_idx, short bipred_me)
void	intra_chroma_prediction (Macroblock *currMB, int *mb_up, int *mb_left, int *mb_up_left)
void	compute_residue (imgpel **curImg, imgpel **mpr, int **mb_rres, int mb_x, int opix_x, int width, int height)
void	sample_reconstruct (imgpel **curImg, imgpel **mpr, int **mb_rres, int mb_x, int opix_x, int width, int height, int max_imgpel_value, int dq_bits)

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Detailed Description

Motion Compensation.

Author:

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

• Alexis Michael Tourapis <alexismt@ieee.org>

Definition in file mc_prediction.c.

---

Function Documentation

void chroma_prediction	(	Macroblock *	currMB,
		int	uv,
		int	block_x,
		int	block_y,
		int	block_size_x,
		int	block_size_y,
		int	p_dir,
		int	l0_mode,
		int	l1_mode,
		short	l0_ref_idx,
		short	l1_ref_idx,
		short	bipred_me
	)

Predict one chroma block.

Definition at line 487 of file mc_prediction.c.

References slice::all_mv, slice::bipred_mv, IMG_PAD_SIZE_TIMES4, IntraChromaPrediction4x4(), is_bipred_enabled(), img_par::max_pel_value_comp, slice::mb_pred, MCBiPrediction(), MCPrediction(), MCWeightedBiPrediction(), MCWeightedPrediction(), OneComponentChromaPrediction(), macroblock::opix_c_y, macroblock::p_Img, macroblock::p_slice, macroblock::pix_c_x, slice::wbp_weight, slice::weighted_prediction, slice::wp_offset, and slice::wp_weight.

Referenced by luma_residual_coding_p444_16x16(), and luma_residual_coding_p444_8x8().

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void chroma_prediction_4x4	(	Macroblock *	currMB,
		int	uv,
		int	block_x,
		int	block_y,
		int	p_dir,
		int	l0_mode,
		int	l1_mode,
		short	l0_ref_idx,
		short	l1_ref_idx,
		short	bipred_me
	)

Predict one chroma 4x4 block.

Definition at line 598 of file mc_prediction.c.

References slice::all_mv, slice::bipred_mv, IntraChromaPrediction4x4(), is_bipred_enabled(), img_par::max_pel_value_comp, slice::mb_pred, MCBiPrediction(), MCPrediction(), MCWeightedBiPrediction(), MCWeightedPrediction(), macroblock::p_Img, macroblock::p_slice, slice::wbp_weight, slice::weighted_prediction, slice::wp_offset, and slice::wp_weight.

Referenced by chroma_residual_coding().

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void intra_chroma_prediction	(	Macroblock *	currMB,
		int *	mb_up,
		int *	mb_left,
		int *	mb_up_left
	)

Intra prediction of the chrminance layers of one macroblock.

< pixel position p(0,-1)

< pixel positions p(-1, -1..15)

Definition at line 698 of file mc_prediction.c.

References macroblock::c_ipred_mode, img_par::dc_pred_value_comp, img_par::field_mode, storable_picture::imgUV, img_par::max_pel_value_comp, img_par::MbaffFrameFlag, slice::mpr_16x16, macroblock::p_slice, slice::slice_type, subblk_offset_x, and inp_par_enc::UseConstrainedIntraPred.

Referenced by encode_one_macroblock_low(), and SetChromaPredMode().

static void IntraChromaPrediction4x4	(	Macroblock *	currMB,
		int	uv,
		int	block_x,
		int	block_y
	)			[inline, static]

Predict an intra chroma 4x4 block.

Parameters:

	currMB	Current Macroblock
	uv	color component
	block_x	relative horizontal block coordinate of 4x4 block
	block_y	relative vertical block coordinate of 4x4 block

Definition at line 466 of file mc_prediction.c.

References macroblock::c_ipred_mode, slice::mb_pred, slice::mpr_16x16, and macroblock::p_slice.

Referenced by chroma_prediction(), and chroma_prediction_4x4().

void luma_prediction	(	Macroblock *	currMB,
		int	block_x,
		int	block_y,
		int	block_size_x,
		int	block_size_y,
		int	p_dir,
		int	list_mode[2],
		char *	ref_idx,
		short	bipred_me
	)

Predict one Luma block.

Parameters:

	currMB	Current Macroblock
	block_x	relative horizontal block coordinate of block
	block_y	relative vertical block coordinate of block
	block_size_x	relative horizontal block coordinate of block
	block_size_y	relative vertical block coordinate of block
	p_dir	prediction direction (0=list0, 1=list1, 2=bipred)
	list_mode	list prediction mode (1-7, 0=DIRECT)
	ref_idx	reference pictures
	bipred_me	use bi prediction mv (0=no bipred, 1 = use set 1, 2 = use set 2)

Definition at line 144 of file mc_prediction.c.

References slice::all_mv, slice::bipred_mv, IMG_PAD_SIZE_TIMES4, is_bipred_enabled(), img_par::max_imgpel_value, slice::mb_pred, MCBiPrediction(), MCPrediction(), MCWeightedBiPrediction(), MCWeightedPrediction(), OneComponentLumaPrediction(), macroblock::opix_y, macroblock::p_Img, macroblock::p_slice, macroblock::pix_x, slice::wbp_weight, slice::weighted_prediction, slice::wp_offset, and slice::wp_weight.

Referenced by BIDPartitionCost(), GetDirectCost8x8(), GetSkipCostMB(), luma_residual_coding(), luma_residual_coding_8x8(), luma_residual_coding_p444_16x16(), luma_residual_coding_p444_8x8(), and TransformDecision().

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void luma_prediction_bi	(	Macroblock *	currMB,
		int	block_x,
		int	block_y,
		int	block_size_x,
		int	block_size_y,
		int	l0_mode,
		int	l1_mode,
		short	l0_ref_idx,
		short	l1_ref_idx,
		int	list
	)

Predict one Luma block.

Parameters:

	currMB	Current Macroblock
	block_x	relative horizontal block coordinate of 4x4 block
	block_y	relative vertical block coordinate of 4x4 block
	block_size_x	horizontal block size
	block_size_y	vertical block size
	l0_mode	list0 prediction mode (1-7, 0=DIRECT if l1_mode=0)
	l1_mode	list1 prediction mode (1-7, 0=DIRECT if l0_mode=0)
	l0_ref_idx	reference frame for list0 prediction (-1: Intra4x4 pred. with l0_mode)
	l1_ref_idx	reference frame for list1 prediction
	list	current list for prediction.

Definition at line 245 of file mc_prediction.c.

References slice::bipred_mv, IMG_PAD_SIZE_TIMES4, img_par::max_imgpel_value, slice::mb_pred, MCBiPrediction(), MCWeightedBiPrediction(), OneComponentLumaPrediction(), macroblock::opix_y, macroblock::p_Img, macroblock::p_slice, macroblock::pix_x, slice::wbp_weight, slice::weighted_prediction, and slice::wp_offset.

Referenced by BPredPartitionCost().

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static void MCBiPrediction	(	imgpel **	mb_pred,
		imgpel *	l0pred,
		imgpel *	l1pred,
		int	block_size_y,
		int	block_x,
		int	block_size_x
	)			[inline, static]

BiPrediction.

Definition at line 82 of file mc_prediction.c.

Referenced by chroma_prediction(), chroma_prediction_4x4(), luma_prediction(), and luma_prediction_bi().

static void MCPrediction	(	imgpel **	mb_pred,
		imgpel *	lpred,
		int	block_size_y,
		int	block_x,
		int	block_size_x
	)			[inline, static]

BiPrediction.

Definition at line 101 of file mc_prediction.c.

Referenced by chroma_prediction(), chroma_prediction_4x4(), and luma_prediction().

static void MCWeightedBiPrediction	(	imgpel **	mb_pred,
		imgpel *	l0pred,
		imgpel *	l1pred,
		int	block_size_y,
		int	block_x,
		int	block_size_x,
		int	max_imgpel_value,
		short	wbp0,
		short	wbp1,
		short	offset,
		short	wp_round,
		short	weight_denom
	)			[inline, static]

Weighted BiPrediction.

Definition at line 38 of file mc_prediction.c.

Referenced by chroma_prediction(), chroma_prediction_4x4(), luma_prediction(), and luma_prediction_bi().

static void MCWeightedPrediction	(	imgpel **	mb_pred,
		imgpel *	lpred,
		int	block_size_y,
		int	block_x,
		int	block_size_x,
		int	max_imgpel_value,
		short	wp,
		short	offset,
		short	wp_round,
		short	weight_denom
	)			[inline, static]

Weighted Prediction.

Definition at line 60 of file mc_prediction.c.

Referenced by chroma_prediction(), chroma_prediction_4x4(), and luma_prediction().

static void OneComponentChromaPrediction	(	ImageParameters *	p_Img,
		imgpel *	mpred,
		int	pic_pix_x,
		int	pic_pix_y,
		int	block_size_x,
		int	block_size_y,
		StorablePicture *	list,
		int	uv
	)			[inline, static]

Retrieve one component of a chroma block from the buffer.

Parameters:

	p_Img	image encoding parameters for current picture
	mpred	array to store prediction values
	pic_pix_x	motion shifted horizontal coordinate of block
	pic_pix_y	motion shifted vertical block
	block_size_x	horizontal block size
	block_size_y	vertical block size
	list	reference picture list
	uv	chroma component

Definition at line 439 of file mc_prediction.c.

References UMVLine4Xcr().

Referenced by chroma_prediction().

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void OneComponentChromaPrediction4x4_regenerate	(	Macroblock *	currMB,
		imgpel *	mpred,
		int	block_c_x,
		int	block_c_y,
		short ***	mv,
		StorablePicture *	list,
		int	uv
	)

Predict (on-the-fly) one component of a chroma 4x4 block.

Parameters:

	currMB	Current Macroblock
	mpred	array to store prediction values
	block_c_x	horizontal pixel coordinate of 4x4 block
	block_c_y	vertical pixel coordinate of 4x4 block
	mv	motion vector array
	list	image components (color planes)
	uv	chroma component

Definition at line 303 of file mc_prediction.c.

References img_par::height_cr, storable_picture::imgUV, img_par::mb_data, macroblock::mbAddrX, macroblock::opix_c_y, macroblock::p_Img, macroblock::pix_c_x, and img_par::width_cr.

Referenced by init_encoder().

void OneComponentChromaPrediction4x4_retrieve	(	Macroblock *	currMB,
		imgpel *	mpred,
		int	block_c_x,
		int	block_c_y,
		short ***	mv,
		StorablePicture *	list,
		int	uv
	)

Retrieve one component of a chroma 4x4 block from the buffer.

Parameters:

	currMB	Current Macroblock
	mpred	array to store prediction values
	block_c_x	horizontal pixel coordinate of 4x4 block
	block_c_y	vertical pixel coordinate of 4x4 block
	mv	motion vector array
	list	image components (color planes)
	uv	chroma component

Definition at line 372 of file mc_prediction.c.

References IMG_PAD_SIZE_TIMES4, macroblock::opix_c_y, macroblock::p_Img, macroblock::pix_c_x, and UMVLine8X_chroma().

Referenced by init_encoder().

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static void OneComponentLumaPrediction	(	ImageParameters *	p_Img,
		imgpel *	mpred,
		int	pic_pix_x,
		int	pic_pix_y,
		int	block_size_x,
		int	block_size_y,
		StorablePicture *	list
	)			[inline, static]

Predict Luma block.

Parameters:

	p_Img	image encoding parameters for current picture
	mpred	array of prediction values (row by row)
	pic_pix_x	motion shifted horizontal coordinate of block
	pic_pix_y	motion shifted vertical coordinate of block
	block_size_x	horizontal block size
	block_size_y	vertical block size
	list	reference picture list

Definition at line 117 of file mc_prediction.c.

References UMVLine4X().

Referenced by luma_prediction(), and luma_prediction_bi().

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