me_epzs_common.h File Reference

Headerfile for common functions for the EPZS motion estimation. More...

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Data Structures

struct EPZSColocParams

struct SPoint

struct epzs_struct

struct epzs_params

Typedefs

typedef struct epzs_struct EPZSStructure

typedef struct epzs_params EPZSParameters

Enumerations

enum EPZSPatterns {
SDIAMOND = 0, SQUARE = 1, EDIAMOND = 2, LDIAMOND = 3,
SBDIAMOND = 4
}

Functions

void EPZSBlockTypePredictorsMB (Slice *currSlice, MEBlock *mv_block, SPoint *point, int *prednum)

short EPZSSpatialPredictors (EPZSParameters *p_EPZS, PixelPos *block, int list, int list_offset, short ref, char **refPic, short ***tmp_mv)

void EPZSTemporalPredictors (Macroblock *currMB, StorablePicture *ref_picture, EPZSParameters *p_EPZS, MEBlock *mv_block, int *prednum, int stopCriterion, int min_mcost)

void EPZSBlockTypePredictors (Slice *currSlice, MEBlock *mv_block, SPoint *point, int *prednum)

void EPZSWindowPredictors (MotionVector *mv, EPZSStructure *predictor, int *prednum, EPZSStructure *windowPred)

void EPZSSpatialMemPredictors (EPZSParameters *p_EPZS, MEBlock *mv_block, int list, int *prednum, int img_width)

int EPZSDetermineStopCriterion (EPZSParameters *p_EPZS, int *prevSad, MEBlock *mv_block, int lambda_dist)

void EPZSDelete (ImageParameters *p_Img)

void EPZSStructDelete (Slice *currSlice)

void EPZSSliceInit (Slice *currSlice)

int EPZSInit (ImageParameters *p_Img)

int EPZSStructInit (Slice *currSlice)

void EPZSOutputStats (InputParameters *p_Inp, FILE *stat, short stats_file)

static int add_predictor (MotionVector *cur_mv, MotionVector prd_mv, int mvScale, int shift_mv)

static void scale_mv (MotionVector *out_mv, int scale, short *mv, int shift_mv)

static void compute_scaled (MotionVector *MotionVector0, MotionVector *MotionVector1, int tempmv_scale[2], short *mv, int invmv_precision)

Detailed Description

Headerfile for common functions for the EPZS motion estimation.

me_epzs_common.h

Author:: Alexis Michael Tourapis <alexis.tourapis@dolby.com>

Date:: 11. August 2006

Definition in file me_epzs_common.h.

Function Documentation

static int add_predictor	(	MotionVector *	cur_mv,
		MotionVector	prd_mv,
		int	mvScale,
		int	shift_mv
	)			`[inline, static]`

Add Predictor/normalize function Returns if succesfully added (i.e. if not 0).

Definition at line 128 of file me_epzs_common.h.

Referenced by EPZSTemporalPredictors().

void EPZSBlockTypePredictors	(	Slice *	currSlice,
		MEBlock *	mv_block,
		SPoint *	point,
		int *	prednum
	)

EPZS Block Type Predictors.

Definition at line 1541 of file me_epzs_common.c.

References slice::all_mv, and BLOCK_PARENT.

Referenced by EPZSIntPelBlockMotionSearchSubMB(), and EPZSPelBlockMotionSearchSubMB().

void EPZSBlockTypePredictorsMB	(	Slice *	currSlice,
		MEBlock *	mv_block,
		SPoint *	point,
		int *	prednum
	)

EPZS Block Type Predictors.

Definition at line 1156 of file me_epzs_common.c.

References slice::all_mv, and BLOCK_PARENT.

Referenced by EPZSIntPelBlockMotionSearch(), and EPZSPelBlockMotionSearch().

void EPZSDelete ( ImageParameters * p_Img )

Delete EPZS Alocated memory.

Definition at line 207 of file me_epzs_common.c.

References freeEPZSpattern().

Referenced by free_global_buffers().

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int EPZSDetermineStopCriterion	(	EPZSParameters *	p_EPZS,
		int *	prevSad,
		MEBlock *	mv_block,
		int	lambda_dist
	)

Determine stop criterion for EPZS.

Definition at line 1700 of file me_epzs_common.c.

Referenced by EPZSBiPredBlockMotionSearch(), EPZSIntBiPredBlockMotionSearch(), EPZSIntPelBlockMotionSearch(), EPZSIntPelBlockMotionSearchSubMB(), EPZSPelBlockMotionSearch(), and EPZSPelBlockMotionSearchSubMB().

int EPZSInit ( ImageParameters * p_Img )

EPZS Global Initialization.

Definition of pottential EPZS patterns. It is possible to also define other patterns, or even use resizing patterns (such as the PMVFAST scheme. These patterns are only shown here as reference, while the same also holds for this implementation (i.e. new conditions could be added on adapting predictors, or thresholds etc. Note that search could also be performed on subpel positions directly while pattern needs not be restricted on integer positions only.

Allocate memory and assign search patterns

Definition at line 169 of file me_epzs_common.c.

References allocEPZSpattern(), and assignEPZSpattern().

Referenced by init_global_buffers().

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void EPZSOutputStats	(	InputParameters *	p_Inp,
		FILE *	stat,
		short	stats_file
	)

Report function for EPZS Fast ME AMT/HYC.

Definition at line 1726 of file me_epzs_common.c.

Referenced by information_init(), and report_stats().

void EPZSSliceInit ( Slice * currSlice )

For ME purposes restricting the co-located partition is not necessary.

EPZS Slice Level Initialization

Assign frame buffers for field MBs Check whether we should use top or bottom field mvs. Depending on the assigned poc values.

Generate field MVs from Frame MVs

Use inference flag to remap mvs/references Frame with field co-located

Definition at line 528 of file me_epzs_common.c.

References pic_motion_params::field_frame, storable_picture::motion, pic_motion_params::mv, pic_motion_params::ref_id, and slice::slice_type.

Referenced by init_slice().

void EPZSSpatialMemPredictors	(	EPZSParameters *	p_EPZS,
		MEBlock *	mv_block,
		int	list,
		int *	prednum,
		int	img_width
	)

Spatial Predictors AMT/HYC.

Parameters:

	p_EPZS	EPZS Parameters
	mv_block	Motion estimation structure
	list	Current list
	prednum	predictor position
	img_width	image width

Definition at line 1611 of file me_epzs_common.c.

Referenced by EPZSIntPelBlockMotionSearch(), EPZSIntPelBlockMotionSearchSubMB(), EPZSPelBlockMotionSearch(), and EPZSPelBlockMotionSearchSubMB().

short EPZSSpatialPredictors	(	EPZSParameters *	p_EPZS,
		PixelPos *	block,
		int	list,
		int	list_offset,
		short	ref,
		char **	refPic,
		short ***	tmp_mv
	)

Spatial Predictors AMT/HYC.

Definition at line 1208 of file me_epzs_common.c.

References img_par::mb_data, and img_par::MbaffFrameFlag.

Referenced by EPZSBiPredBlockMotionSearch(), EPZSIntBiPredBlockMotionSearch(), EPZSIntPelBlockMotionSearch(), EPZSIntPelBlockMotionSearchSubMB(), EPZSPelBlockMotionSearch(), and EPZSPelBlockMotionSearchSubMB().

void EPZSStructDelete ( Slice * currSlice )

Delete EPZS Alocated memory.

Definition at line 489 of file me_epzs_common.c.

References inp_par_enc::BiPredMotionEstimation, free_mem2Dshort(), free_mem3Dint(), free_mem4Dmv(), free_mem5Dmv(), freeEPZScolocated(), and freeEPZSpattern().

Referenced by terminate_slice().

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int EPZSStructInit ( Slice * currSlice )

EPZS Global Initialization.

In this implementation we keep threshold limits fixed. However one could adapt these limits based on lagrangian optimization considerations (i.e. qp), while also allow adaptation of the limits themselves based on content or complexity.

Allocate and assign window based predictors. Other window types could also be used, while method could be made a bit more adaptive (i.e. patterns could be assigned based on neighborhood

Also assing search predictor memory

Finally assign memory for all other elements (distortion, EPZSMap, and temporal predictors)

Definition at line 367 of file me_epzs_common.c.

References allocEPZScolocated(), allocEPZSpattern(), inp_par_enc::BiPredMESearchRange, inp_par_enc::BiPredMotionEstimation, EPZSWindowPredictorInit(), get_mem2Dshort(), get_mem3Dint(), get_mem4Dmv(), get_mem5Dmv(), img_par::height, img_par::height_cr, img_par::max_num_references, img_par::MbaffFrameFlag, RoundLog2(), inp_par_enc::search_range, img_par::width, and img_par::width_cr.

Referenced by init_slice().

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void EPZSTemporalPredictors	(	Macroblock *	currMB,
		StorablePicture *	ref_picture,
		EPZSParameters *	p_EPZS,
		MEBlock *	mv_block,
		int *	prednum,
		int	stopCriterion,
		int	min_mcost
	)

Temporal Predictors AMT/HYC.

Parameters:

	currMB	Currrent Macroblock
	ref_picture	Current reference picture
	p_EPZS	EPZS structure
	mv_block	motion estimation information block
	prednum	Pointer to first empty position in EPZS predictor list
	stopCriterion	EPZS thresholding criterion for temporal predictor considerations
	min_mcost	Current minimum distortion for block

Definition at line 1460 of file me_epzs_common.c.

References add_predictor().

Referenced by EPZSIntPelBlockMotionSearch(), and EPZSPelBlockMotionSearch().

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void EPZSWindowPredictors	(	MotionVector *	mv,
		EPZSStructure *	predictor,
		int *	prednum,
		EPZSStructure *	windowPred
	)

EPZS Window Based Predictors.

Definition at line 1590 of file me_epzs_common.c.

Referenced by EPZSIntPelBlockMotionSearch(), and EPZSPelBlockMotionSearch().


Data Structures
struct	EPZSColocParams
struct	SPoint
struct	epzs_struct
struct	epzs_params
Typedefs
typedef struct epzs_struct	EPZSStructure
typedef struct epzs_params	EPZSParameters
Enumerations
enum	EPZSPatterns { SDIAMOND = 0, SQUARE = 1, EDIAMOND = 2, LDIAMOND = 3, SBDIAMOND = 4 }
Functions
void	EPZSBlockTypePredictorsMB (Slice currSlice, MEBlock mv_block, SPoint point, int prednum)
short	EPZSSpatialPredictors (EPZSParameters p_EPZS, PixelPos block, int list, int list_offset, short ref, char refPic, short *tmp_mv)
void	EPZSTemporalPredictors (Macroblock currMB, StorablePicture ref_picture, EPZSParameters p_EPZS, MEBlock mv_block, int *prednum, int stopCriterion, int min_mcost)
void	EPZSBlockTypePredictors (Slice currSlice, MEBlock mv_block, SPoint point, int prednum)
void	EPZSWindowPredictors (MotionVector mv, EPZSStructure predictor, int prednum, EPZSStructure windowPred)
void	EPZSSpatialMemPredictors (EPZSParameters p_EPZS, MEBlock mv_block, int list, int *prednum, int img_width)
int	EPZSDetermineStopCriterion (EPZSParameters p_EPZS, int prevSad, MEBlock *mv_block, int lambda_dist)
void	EPZSDelete (ImageParameters *p_Img)
void	EPZSStructDelete (Slice *currSlice)
void	EPZSSliceInit (Slice *currSlice)
int	EPZSInit (ImageParameters *p_Img)
int	EPZSStructInit (Slice *currSlice)
void	EPZSOutputStats (InputParameters p_Inp, FILE stat, short stats_file)
static int	add_predictor (MotionVector *cur_mv, MotionVector prd_mv, int mvScale, int shift_mv)
static void	scale_mv (MotionVector out_mv, int scale, short mv, int shift_mv)
static void	compute_scaled (MotionVector MotionVector0, MotionVector MotionVector1, int tempmv_scale[2], short *mv, int invmv_precision)