mc_prediction.c File Reference

Motion Compensation. More...

#include "contributors.h"
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
#include <math.h>
#include "global.h"
#include "macroblock.h"
#include "mc_prediction.h"
#include "refbuf.h"
#include "image.h"
#include "mb_access.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, int wbp0, int wbp1, int offset, int wp_round, int 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, int wp, int offset, int wp_round, int 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 (imgpel *mpred, int pic_pix_x, int pic_pix_y, int block_size_x, int block_size_y, StorablePicture *list)
void	LumaPrediction (Macroblock *currMB, 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	LumaPredictionBi (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 (imgpel *mpred, int block_c_x, int block_c_y, short ***mv, StorablePicture *list, int uv)
void	OneComponentChromaPrediction4x4_retrieve (imgpel *mpred, int block_c_x, int block_c_y, short ***mv, StorablePicture *list, int uv)
static void	OneComponentChromaPrediction (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	ChromaPrediction (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	ChromaPrediction4x4 (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	IntraChromaPrediction (Macroblock *currMB, int *mb_up, int *mb_left, int *mb_up_left)
void	ComputeResidue (imgpel **curImg, imgpel **mpr, int **mb_rres, int mb_y, int mb_x, int opix_y, int opix_x, int width, int height)
void	SampleReconstruct (imgpel **curImg, imgpel **mpr, int **mb_rres, int mb_y, int mb_x, int opix_y, int opix_x, int width, int height, int max_imgpel_value, int dq_bits)
Variables
static int	diff [16]
static imgpel	l0_pred [MB_PIXELS]
static imgpel	l1_pred [MB_PIXELS]

---

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 ChromaPrediction	(	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 462 of file mc_prediction.c.

References ImageParameters::all_mv, ImageParameters::bipred_mv, IMG_PAD_SIZE_TIMES4, IntraChromaPrediction4x4(), is_bipred_enabled(), macroblock::list_offset, ImageParameters::max_imgpel_value_comp, ImageParameters::mb_pred, MCBiPrediction(), MCPrediction(), MCWeightedBiPrediction(), MCWeightedPrediction(), OneComponentChromaPrediction(), ImageParameters::opix_c_x, ImageParameters::opix_c_y, and ImageParameters::type.

Referenced by LumaResidualCoding8x8().

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void ChromaPrediction4x4	(	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 562 of file mc_prediction.c.

References ImageParameters::all_mv, ImageParameters::bipred_mv, IntraChromaPrediction4x4(), is_bipred_enabled(), macroblock::list_offset, ImageParameters::max_imgpel_value_comp, ImageParameters::mb_pred, MCBiPrediction(), MCPrediction(), MCWeightedBiPrediction(), MCWeightedPrediction(), and ImageParameters::type.

Referenced by ChromaResidualCoding().

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void IntraChromaPrediction	(	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 656 of file mc_prediction.c.

References pix_pos::available, macroblock::c_ipred_mode, InputParameters::ChromaIntraDisable, ImageParameters::dc_pred_value_comp, distortion4x4(), ImageParameters::field_mode, storable_picture::imgUV, ImageParameters::intra_block, InputParameters::IntraDisableInterOnly, ImageParameters::max_imgpel_value_comp, pix_pos::mb_addr, ImageParameters::mb_cr_size_x, ImageParameters::mb_cr_size_y, ImageParameters::mb_size, ImageParameters::MbaffFrameFlag, ImageParameters::mpr_16x16, ImageParameters::num_blk8x8_uv, pix_pos::pos_x, pix_pos::pos_y, InputParameters::rdopt, subblk_offset_x, ImageParameters::type, InputParameters::UseConstrainedIntraPred, and ImageParameters::yuv_format.

Referenced by encode_one_macroblock_high(), encode_one_macroblock_highfast(), encode_one_macroblock_highloss(), and encode_one_macroblock_low().

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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 442 of file mc_prediction.c.

References macroblock::c_ipred_mode, ImageParameters::mb_pred, and ImageParameters::mpr_16x16.

Referenced by ChromaPrediction(), and ChromaPrediction4x4().

void LumaPrediction	(	Macroblock *	currMB,
		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 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)
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
bipred_me	use bi prediction mv (0=no bipred, 1 = use set 1, 2 = use set 2)

Definition at line 146 of file mc_prediction.c.

References ImageParameters::all_mv, ImageParameters::bipred_mv, IMG_PAD_SIZE_TIMES4, is_bipred_enabled(), macroblock::list_offset, ImageParameters::max_imgpel_value, ImageParameters::mb_pred, MCBiPrediction(), MCPrediction(), MCWeightedBiPrediction(), MCWeightedPrediction(), OneComponentLumaPrediction(), ImageParameters::opix_x, ImageParameters::opix_y, and ImageParameters::type.

Referenced by BIDPartitionCost(), GetDirectCost8x8(), GetSkipCostMB(), LumaResidualCoding8x8(), and TransformDecision().

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void LumaPredictionBi	(	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 239 of file mc_prediction.c.

References ImageParameters::bipred_mv, IMG_PAD_SIZE_TIMES4, macroblock::list_offset, ImageParameters::max_imgpel_value, ImageParameters::mb_pred, MCBiPrediction(), MCWeightedBiPrediction(), OneComponentLumaPrediction(), ImageParameters::opix_x, ImageParameters::opix_y, and ImageParameters::type.

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 85 of file mc_prediction.c.

Referenced by ChromaPrediction(), ChromaPrediction4x4(), LumaPrediction(), and LumaPredictionBi().

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 104 of file mc_prediction.c.

Referenced by ChromaPrediction(), ChromaPrediction4x4(), and LumaPrediction().

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,
		int	wbp0,
		int	wbp1,
		int	offset,
		int	wp_round,
		int	weight_denom
	)			[inline, static]

Weighted BiPrediction.

Definition at line 41 of file mc_prediction.c.

Referenced by ChromaPrediction(), ChromaPrediction4x4(), LumaPrediction(), and LumaPredictionBi().

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

Weighted Prediction.

Definition at line 63 of file mc_prediction.c.

Referenced by ChromaPrediction(), ChromaPrediction4x4(), and LumaPrediction().

static void OneComponentChromaPrediction	(	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:

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 416 of file mc_prediction.c.

References storable_picture::imgUV_sub, storable_picture::size_x_cr_pad, storable_picture::size_y_cr_pad, and UMVLine4X().

Referenced by ChromaPrediction().

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void OneComponentChromaPrediction4x4_regenerate	(	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:

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 288 of file mc_prediction.c.

References storable_picture::chroma_vector_adjustment, ImageParameters::current_mb_nr, ImageParameters::height_cr, storable_picture::imgUV, macroblock::list_offset, ImageParameters::mb_cr_size_x, ImageParameters::mb_cr_size_y, ImageParameters::mb_data, ImageParameters::opix_c_x, ImageParameters::opix_c_y, and ImageParameters::width_cr.

Referenced by PatchInp().

void OneComponentChromaPrediction4x4_retrieve	(	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:

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 354 of file mc_prediction.c.

References storable_picture::chroma_vector_adjustment, IMG_PAD_SIZE_TIMES4, storable_picture::imgUV_sub, ImageParameters::opix_c_x, ImageParameters::opix_c_y, storable_picture::size_x_cr_pad, storable_picture::size_y_cr_pad, and UMVLine8X_chroma().

Referenced by PatchInp().

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static void OneComponentLumaPrediction	(	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:

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 120 of file mc_prediction.c.

References storable_picture::p_curr_img_sub, storable_picture::size_x_pad, storable_picture::size_y_pad, and UMVLine4X().

Referenced by LumaPrediction(), and LumaPredictionBi().

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