dirac_dwt.h File Reference

#include <stdint.h>

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Data Structures
struct	DWTCompose
struct	DWTContext

Macros
#define	MAX_DWT_SUPPORT   8
#define	MAX_DECOMPOSITIONS   8
#define	COMPOSE_53iL0(b0, b1, b2)   (b1 - ((b0 + b2 + 2) >> 2))
#define	COMPOSE_DIRAC53iH0(b0, b1, b2)   (b1 + ((b0 + b2 + 1) >> 1))
#define	COMPOSE_DD97iH0(b0, b1, b2, b3, b4)   (b2 + ((-b0 + 9*b1 + 9*b3 - b4 + 8) >> 4))
#define	COMPOSE_DD137iL0(b0, b1, b2, b3, b4)   (b2 - ((-b0 + 9*b1 + 9*b3 - b4 + 16) >> 5))
#define	COMPOSE_HAARiL0(b0, b1)   (b0 - ((b1 + 1) >> 1))
#define	COMPOSE_HAARiH0(b0, b1)   (b0 + b1)
#define	COMPOSE_FIDELITYiL0(b0, b1, b2, b3, b4, b5, b6, b7, b8)   (b4 - ((-8*(b0+b8) + 21*(b1+b7) - 46*(b2+b6) + 161*(b3+b5) + 128) >> 8))
#define	COMPOSE_FIDELITYiH0(b0, b1, b2, b3, b4, b5, b6, b7, b8)   (b4 + ((-2*(b0+b8) + 10*(b1+b7) - 25*(b2+b6) + 81*(b3+b5) + 128) >> 8))
#define	COMPOSE_DAUB97iL1(b0, b1, b2)   (b1 - ((1817*(b0 + b2) + 2048) >> 12))
#define	COMPOSE_DAUB97iH1(b0, b1, b2)   (b1 - (( 113*(b0 + b2) + 64) >> 7))
#define	COMPOSE_DAUB97iL0(b0, b1, b2)   (b1 + (( 217*(b0 + b2) + 2048) >> 12))
#define	COMPOSE_DAUB97iH0(b0, b1, b2)   (b1 + ((6497*(b0 + b2) + 2048) >> 12))

Typedefs
typedef int	DWTELEM
typedef short	IDWTELEM
typedef struct DWTCompose	DWTCompose
typedef void(*	vertical_compose_2tap) (IDWTELEM *b0, IDWTELEM *b1, int width)
typedef void(*	vertical_compose_3tap) (IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width)
typedef void(*	vertical_compose_5tap) (IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, int width)
typedef void(*	vertical_compose_9tap) (IDWTELEM *dst, IDWTELEM *b[8], int width)
typedef struct DWTContext	DWTContext

Enumerations
enum	dwt_type {   DWT_SNOW_DAUB9_7, DWT_SNOW_LEGALL5_3, DWT_DIRAC_DD9_7, DWT_DIRAC_LEGALL5_3,   DWT_DIRAC_DD13_7, DWT_DIRAC_HAAR0, DWT_DIRAC_HAAR1, DWT_DIRAC_FIDELITY,   DWT_DIRAC_DAUB9_7, DWT_NUM_TYPES }

Functions
int	ff_spatial_idwt_init2 (DWTContext *d, IDWTELEM *buffer, int width, int height, int stride, enum dwt_type type, int decomposition_count, IDWTELEM *temp)
int	ff_spatial_idwt2 (IDWTELEM *buffer, int width, int height, int stride, enum dwt_type type, int decomposition_count, IDWTELEM *temp)
void	ff_spatial_idwt_slice2 (DWTContext *d, int y)

Macro Definition Documentation

#define COMPOSE_53iL0	(		b0,
			b1,
			b2
	)		(b1 - ((b0 + b2 + 2) >> 2))

Definition at line 89 of file dirac_dwt.h.

Referenced by horizontal_compose_dd97i(), and horizontal_compose_dirac53i().

#define COMPOSE_DAUB97iH0	(		b0,
			b1,
			b2
	)		(b1 + ((6497*(b0 + b2) + 2048) >> 12))

Definition at line 122 of file dirac_dwt.h.

Referenced by horizontal_compose_daub97i(), and vertical_compose_daub97iH0().

#define COMPOSE_DAUB97iH1	(		b0,
			b1,
			b2
	)		(b1 - (( 113*(b0 + b2) + 64) >> 7))

Definition at line 116 of file dirac_dwt.h.

Referenced by horizontal_compose_daub97i(), and vertical_compose_daub97iH1().

#define COMPOSE_DAUB97iL0	(		b0,
			b1,
			b2
	)		(b1 + (( 217*(b0 + b2) + 2048) >> 12))

Definition at line 119 of file dirac_dwt.h.

Referenced by horizontal_compose_daub97i(), and vertical_compose_daub97iL0().

#define COMPOSE_DAUB97iL1	(		b0,
			b1,
			b2
	)		(b1 - ((1817*(b0 + b2) + 2048) >> 12))

Definition at line 113 of file dirac_dwt.h.

Referenced by horizontal_compose_daub97i(), and vertical_compose_daub97iL1().

#define COMPOSE_DD137iL0	(		b0,
			b1,
			b2,
			b3,
			b4
	)		(b2 - ((-b0 + 9*b1 + 9*b3 - b4 + 16) >> 5))

Definition at line 98 of file dirac_dwt.h.

Referenced by horizontal_compose_dd137i(), and vertical_compose_dd137iL0().

#define COMPOSE_DD97iH0	(		b0,
			b1,
			b2,
			b3,
			b4
	)		(b2 + ((-b0 + 9*b1 + 9*b3 - b4 + 8) >> 4))

Definition at line 95 of file dirac_dwt.h.

Referenced by horizontal_compose_dd137i(), horizontal_compose_dd97i(), and vertical_compose_dd97iH0().

#define COMPOSE_DIRAC53iH0	(		b0,
			b1,
			b2
	)		(b1 + ((b0 + b2 + 1) >> 1))

Definition at line 92 of file dirac_dwt.h.

Referenced by horizontal_compose_dirac53i(), and vertical_compose_dirac53iH0().

#define COMPOSE_FIDELITYiH0	(		b0,
			b1,
			b2,
			b3,
			b4,
			b5,
			b6,
			b7,
			b8
	)		(b4 + ((-2*(b0+b8) + 10*(b1+b7) - 25*(b2+b6) + 81*(b3+b5) + 128) >> 8))

Definition at line 110 of file dirac_dwt.h.

Referenced by horizontal_compose_fidelityi(), and vertical_compose_fidelityiH0().

#define COMPOSE_FIDELITYiL0	(		b0,
			b1,
			b2,
			b3,
			b4,
			b5,
			b6,
			b7,
			b8
	)		(b4 - ((-8*(b0+b8) + 21*(b1+b7) - 46*(b2+b6) + 161*(b3+b5) + 128) >> 8))

Definition at line 107 of file dirac_dwt.h.

Referenced by horizontal_compose_fidelityi(), and vertical_compose_fidelityiL0().

#define COMPOSE_HAARiH0	(		b0,
			b1
	)		(b0 + b1)

Definition at line 104 of file dirac_dwt.h.

Referenced by horizontal_compose_haari(), and vertical_compose_haar().

#define COMPOSE_HAARiL0	(		b0,
			b1
	)		(b0 - ((b1 + 1) >> 1))

Definition at line 101 of file dirac_dwt.h.

Referenced by horizontal_compose_haari(), and vertical_compose_haar().

#define MAX_DECOMPOSITIONS   8

Definition at line 30 of file dirac_dwt.h.

Referenced by decode_frame(), decode_header(), ff_snow_reset_contexts(), and ff_spatial_idwt().

#define MAX_DWT_SUPPORT   8

Definition at line 29 of file dirac_dwt.h.

Typedef Documentation

typedef struct DWTCompose DWTCompose

typedef struct DWTContext DWTContext

typedef int DWTELEM

Definition at line 26 of file dirac_dwt.h.

typedef short IDWTELEM

Definition at line 27 of file dirac_dwt.h.

typedef void(* vertical_compose_2tap) (IDWTELEM *b0, IDWTELEM *b1, int width)

Definition at line 40 of file dirac_dwt.h.

typedef void(* vertical_compose_3tap) (IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width)

Definition at line 41 of file dirac_dwt.h.

typedef void(* vertical_compose_5tap) (IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, int width)

Definition at line 42 of file dirac_dwt.h.

typedef void(* vertical_compose_9tap) (IDWTELEM *dst, IDWTELEM *b[8], int width)

Definition at line 43 of file dirac_dwt.h.

Enumeration Type Documentation

enum dwt_type

Enumerator
DWT_SNOW_DAUB9_7
DWT_SNOW_LEGALL5_3
DWT_DIRAC_DD9_7
DWT_DIRAC_LEGALL5_3
DWT_DIRAC_DD13_7
DWT_DIRAC_HAAR0
DWT_DIRAC_HAAR1
DWT_DIRAC_FIDELITY
DWT_DIRAC_DAUB9_7
DWT_NUM_TYPES

Definition at line 65 of file dirac_dwt.h.

Function Documentation

int ff_spatial_idwt2	(	IDWTELEM *	buffer,
		int	width,
		int	height,
		int	stride,
		enum dwt_type	type,
		int	decomposition_count,
		IDWTELEM *	temp
	)

Definition at line 572 of file dirac_dwt.c.

int ff_spatial_idwt_init2	(	DWTContext *	d,
		IDWTELEM *	buffer,
		int	width,
		int	height,
		int	stride,
		enum dwt_type	type,
		int	decomposition_count,
		IDWTELEM *	temp
	)

Definition at line 461 of file dirac_dwt.c.

Referenced by dirac_decode_frame_internal(), and ff_spatial_idwt2().

void ff_spatial_idwt_slice2	(	DWTContext *	d,
		int	y
	)

Definition at line 558 of file dirac_dwt.c.

Referenced by dirac_decode_frame_internal(), and ff_spatial_idwt2().