libavcodec/j2k.h File Reference

JPEG2000 tables. More...

#include "mqc.h"
#include "j2k_dwt.h"

Go to the source code of this file.

Data Structures
struct	J2kT1Context
struct	J2kTgtNode
struct	J2kCodingStyle
struct	J2kQuantStyle
struct	J2kPass
struct	J2kCblk
struct	J2kPrec
struct	J2kBand
struct	J2kResLevel
struct	J2kComponent
Defines
#define	J2K_MAX_CBLKW   64
#define	J2K_MAX_CBLKH   64
#define	J2K_T1_SIG_N   0x0001
#define	J2K_T1_SIG_E   0x0002
#define	J2K_T1_SIG_W   0x0004
#define	J2K_T1_SIG_S   0x0008
#define	J2K_T1_SIG_NE   0x0010
#define	J2K_T1_SIG_NW   0x0020
#define	J2K_T1_SIG_SE   0x0040
#define	J2K_T1_SIG_SW   0x0080
#define	J2K_T1_SIG_NB
#define	J2K_T1_SGN_N   0x0100
#define	J2K_T1_SGN_S   0x0200
#define	J2K_T1_SGN_W   0x0400
#define	J2K_T1_SGN_E   0x0800
#define	J2K_T1_VIS   0x1000
#define	J2K_T1_SIG   0x2000
#define	J2K_T1_REF   0x4000
#define	J2K_T1_SGN   0x8000
#define	J2K_CBLK_BYPASS   0x01
#define	J2K_CBLK_RESET   0x02
#define	J2K_CBLK_TERMALL   0x04
#define	J2K_CBLK_VSC   0x08
#define	J2K_CBLK_PREDTERM   0x10
#define	J2K_CBLK_SEGSYM   0x20
#define	J2K_CSTY_PREC   0x01
#define	J2K_CSTY_SOP   0x02
#define	J2K_CSTY_EPH   0x04
Enumerations
enum	J2kMarkers {   J2K_SOC = 0xff4f, J2K_SIZ = 0xff51, J2K_COD, J2K_COC,   J2K_TLM = 0xff55, J2K_PLM = 0xff57, J2K_PLT, J2K_QCD = 0xff5c,   J2K_QCC, J2K_RGN, J2K_POC, J2K_PPM,   J2K_PPT, J2K_CRG = 0xff63, J2K_COM, J2K_SOT = 0xff90,   J2K_SOP, J2K_EPH, J2K_SOD, J2K_EOC = 0xffd9 }
enum	J2kQuantsty { J2K_QSTY_NONE, J2K_QSTY_SI, J2K_QSTY_SE }
Functions
static int	ff_j2k_ceildivpow2 (int a, int b)
static int	ff_j2k_ceildiv (int a, int b)
J2kTgtNode *	ff_j2k_tag_tree_init (int w, int h)
void	ff_j2k_init_tier1_luts (void)
void	ff_j2k_set_significant (J2kT1Context *t1, int x, int y, int negative)
static int	ff_j2k_getnbctxno (int flag, int bandno, int vert_causal_ctx_csty_symbol)
static int	ff_j2k_getrefctxno (int flag)
static int	ff_j2k_getsgnctxno (int flag, int *xorbit)
int	ff_j2k_init_component (J2kComponent *comp, J2kCodingStyle *codsty, J2kQuantStyle *qntsty, int cbps, int dx, int dy)
void	ff_j2k_reinit (J2kComponent *comp, J2kCodingStyle *codsty)
void	ff_j2k_cleanup (J2kComponent *comp, J2kCodingStyle *codsty)
Variables
uint8_t	ff_j2k_nbctxno_lut [256][4]
uint8_t	ff_j2k_sgnctxno_lut [16][16]
uint8_t	ff_j2k_xorbit_lut [16][16]

---

Detailed Description

JPEG2000 tables.

Author:

Kamil Nowosad

Definition in file j2k.h.

---

Define Documentation

#define J2K_CBLK_BYPASS   0x01

Definition at line 91 of file j2k.h.

Referenced by decode_cblk().

#define J2K_CBLK_PREDTERM   0x10

Definition at line 95 of file j2k.h.

#define J2K_CBLK_RESET   0x02

Definition at line 92 of file j2k.h.

#define J2K_CBLK_SEGSYM   0x20

Definition at line 96 of file j2k.h.

Referenced by decode_cblk().

#define J2K_CBLK_TERMALL   0x04

Definition at line 93 of file j2k.h.

#define J2K_CBLK_VSC   0x08

Definition at line 94 of file j2k.h.

Referenced by decode_cblk().

#define J2K_CSTY_EPH   0x04

Definition at line 101 of file j2k.h.

Referenced by decode_packet().

#define J2K_CSTY_PREC   0x01

Definition at line 99 of file j2k.h.

Referenced by get_cox().

#define J2K_CSTY_SOP   0x02

Definition at line 100 of file j2k.h.

#define J2K_MAX_CBLKH   64

Definition at line 64 of file j2k.h.

#define J2K_MAX_CBLKW   64

Definition at line 63 of file j2k.h.

#define J2K_T1_REF   0x4000

Definition at line 86 of file j2k.h.

Referenced by decode_refpass(), and encode_refpass().

#define J2K_T1_SGN   0x8000

Definition at line 88 of file j2k.h.

Referenced by encode_cblk().

#define J2K_T1_SGN_E   0x0800

Definition at line 82 of file j2k.h.

Referenced by ff_j2k_set_significant(), and getsgnctxno().

#define J2K_T1_SGN_N   0x0100

Definition at line 79 of file j2k.h.

Referenced by ff_j2k_set_significant(), and getsgnctxno().

#define J2K_T1_SGN_S   0x0200

Definition at line 80 of file j2k.h.

Referenced by ff_j2k_set_significant(), and getsgnctxno().

#define J2K_T1_SGN_W   0x0400

Definition at line 81 of file j2k.h.

Referenced by ff_j2k_set_significant(), and getsgnctxno().

#define J2K_T1_SIG   0x2000

Definition at line 85 of file j2k.h.

Referenced by decode_clnpass(), decode_refpass(), decode_sigpass(), encode_clnpass(), encode_refpass(), encode_sigpass(), and ff_j2k_set_significant().

#define J2K_T1_SIG_E   0x0002

Definition at line 69 of file j2k.h.

Referenced by ff_j2k_set_significant(), getnbctxno(), and getsgnctxno().

#define J2K_T1_SIG_N   0x0001

Definition at line 68 of file j2k.h.

Referenced by ff_j2k_set_significant(), getnbctxno(), and getsgnctxno().

#define J2K_T1_SIG_NB

Value:

(J2K_T1_SIG_N | J2K_T1_SIG_E | J2K_T1_SIG_S | J2K_T1_SIG_W \
                      |J2K_T1_SIG_NE | J2K_T1_SIG_NW | J2K_T1_SIG_SE | J2K_T1_SIG_SW)

Definition at line 76 of file j2k.h.

Referenced by decode_clnpass(), decode_sigpass(), encode_clnpass(), and encode_sigpass().

#define J2K_T1_SIG_NE   0x0010

Definition at line 72 of file j2k.h.

Referenced by ff_j2k_set_significant(), and getnbctxno().

#define J2K_T1_SIG_NW   0x0020

Definition at line 73 of file j2k.h.

Referenced by ff_j2k_set_significant(), and getnbctxno().

#define J2K_T1_SIG_S   0x0008

Definition at line 71 of file j2k.h.

Referenced by ff_j2k_set_significant(), getnbctxno(), and getsgnctxno().

#define J2K_T1_SIG_SE   0x0040

Definition at line 74 of file j2k.h.

Referenced by ff_j2k_set_significant(), and getnbctxno().

#define J2K_T1_SIG_SW   0x0080

Definition at line 75 of file j2k.h.

Referenced by ff_j2k_set_significant(), and getnbctxno().

#define J2K_T1_SIG_W   0x0004

Definition at line 70 of file j2k.h.

Referenced by ff_j2k_set_significant(), getnbctxno(), and getsgnctxno().

#define J2K_T1_VIS   0x1000

Definition at line 84 of file j2k.h.

Referenced by decode_clnpass(), decode_refpass(), decode_sigpass(), encode_clnpass(), encode_refpass(), and encode_sigpass().

---

Enumeration Type Documentation

enum J2kMarkers

Enumerator:

J2K_SOC	start of codestream
J2K_SIZ	image and tile size
J2K_COD	coding style default
J2K_COC	coding style component
J2K_TLM	packed packet headers, tile-part header
J2K_PLM	tile-part lengths
J2K_PLT	packet length, main header
J2K_QCD	quantization default
J2K_QCC	quantization component
J2K_RGN	region of interest
J2K_POC	progression order change
J2K_PPM	packet length, tile-part header
J2K_PPT	packed packet headers, main header
J2K_CRG	component registration
J2K_COM	comment
J2K_SOT	start of tile-part
J2K_SOP	start of packet
J2K_EPH	end of packet header
J2K_SOD	start of data
J2K_EOC	end of codestream

Definition at line 34 of file j2k.h.

enum J2kQuantsty

Enumerator:

J2K_QSTY_NONE	quantization style no quantization
J2K_QSTY_SI	scalar derived
J2K_QSTY_SE	scalar expoounded

Definition at line 57 of file j2k.h.

---

Function Documentation

static int ff_j2k_ceildiv	(	int	a,
		int	b
	)			[inline, static]

Definition at line 196 of file j2k.h.

Referenced by decode_tile(), encode_tile(), ff_j2k_init_component(), get_siz(), and init_tiles().

static int ff_j2k_ceildivpow2	(	int	a,
		int	b
	)			[inline, static]

Definition at line 191 of file j2k.h.

Referenced by ff_j2k_init_component(), and init_tiles().

void ff_j2k_cleanup	(	J2kComponent *	comp,
		J2kCodingStyle *	codsty
	)

Definition at line 370 of file j2k.c.

Referenced by cleanup().

static int ff_j2k_getnbctxno	(	int	flag,
		int	bandno,
		int	vert_causal_ctx_csty_symbol
	)			[inline, static]

Definition at line 211 of file j2k.h.

Referenced by decode_clnpass(), decode_sigpass(), encode_clnpass(), and encode_sigpass().

static int ff_j2k_getrefctxno

(

int

flag

)

[inline, static]

Definition at line 216 of file j2k.h.

Referenced by decode_refpass(), and encode_refpass().

static int ff_j2k_getsgnctxno	(	int	flag,
		int *	xorbit
	)			[inline, static]

Definition at line 224 of file j2k.h.

Referenced by decode_clnpass(), decode_sigpass(), encode_clnpass(), and encode_sigpass().

int ff_j2k_init_component	(	J2kComponent *	comp,
		J2kCodingStyle *	codsty,
		J2kQuantStyle *	qntsty,
		int	cbps,
		int	dx,
		int	dy
	)

Definition at line 203 of file j2k.c.

Referenced by init_tile(), and init_tiles().

void ff_j2k_init_tier1_luts

(

void

)

Definition at line 171 of file j2k.c.

Referenced by decode_frame(), and j2kenc_init().

void ff_j2k_reinit	(	J2kComponent *	comp,
		J2kCodingStyle *	codsty
	)

Definition at line 349 of file j2k.c.

Referenced by reinit().

void ff_j2k_set_significant	(	J2kT1Context *	t1,
		int	x,
		int	y,
		int	negative
	)

Definition at line 182 of file j2k.c.

Referenced by decode_clnpass(), decode_sigpass(), encode_clnpass(), and encode_sigpass().

J2kTgtNode* ff_j2k_tag_tree_init	(	int	w,
		int	h
	)

Definition at line 67 of file j2k.c.

Referenced by ff_j2k_init_component().

---

Variable Documentation

uint8_t ff_j2k_nbctxno_lut[256][4]

Definition at line 106 of file j2k.c.

Referenced by ff_j2k_getnbctxno().

uint8_t ff_j2k_sgnctxno_lut[16][16]

Definition at line 154 of file j2k.c.

Referenced by ff_j2k_getsgnctxno().

uint8_t ff_j2k_xorbit_lut[16][16]

Definition at line 154 of file j2k.c.

Referenced by ff_j2k_getsgnctxno().