j2k.h File Reference

The JPEG-2000 Codestream Reader/Writer (J2K) More...

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Data Structures
struct	opj_stepsize
	Quantization stepsize. More...
struct	opj_tccp
	Tile-component coding parameters. More...
struct	opj_tcp
	Tile coding parameters : this structure is used to store coding/decoding parameters common to all tiles (information like COD, COC in main header) More...
struct	opj_cp
	Coding parameters. More...
struct	opj_j2k
	JPEG-2000 codestream reader/writer. More...

Macros
#define	J2K_CP_CSTY_PRT   0x01
#define	J2K_CP_CSTY_SOP   0x02
#define	J2K_CP_CSTY_EPH   0x04
#define	J2K_CCP_CSTY_PRT   0x01
#define	J2K_CCP_CBLKSTY_LAZY   0x01
	Selective arithmetic coding bypass. More...
#define	J2K_CCP_CBLKSTY_RESET   0x02
	Reset context probabilities on coding pass boundaries. More...
#define	J2K_CCP_CBLKSTY_TERMALL   0x04
	Termination on each coding pass. More...
#define	J2K_CCP_CBLKSTY_VSC   0x08
	Vertically stripe causal context. More...
#define	J2K_CCP_CBLKSTY_PTERM   0x10
	Predictable termination. More...
#define	J2K_CCP_CBLKSTY_SEGSYM   0x20
	Segmentation symbols are used. More...
#define	J2K_CCP_QNTSTY_NOQNT   0
#define	J2K_CCP_QNTSTY_SIQNT   1
#define	J2K_CCP_QNTSTY_SEQNT   2
#define	J2K_MS_SOC   0xff4f
	SOC marker value. More...
#define	J2K_MS_SOT   0xff90
	SOT marker value. More...
#define	J2K_MS_SOD   0xff93
	SOD marker value. More...
#define	J2K_MS_EOC   0xffd9
	EOC marker value. More...
#define	J2K_MS_SIZ   0xff51
	SIZ marker value. More...
#define	J2K_MS_COD   0xff52
	COD marker value. More...
#define	J2K_MS_COC   0xff53
	COC marker value. More...
#define	J2K_MS_RGN   0xff5e
	RGN marker value. More...
#define	J2K_MS_QCD   0xff5c
	QCD marker value. More...
#define	J2K_MS_QCC   0xff5d
	QCC marker value. More...
#define	J2K_MS_POC   0xff5f
	POC marker value. More...
#define	J2K_MS_TLM   0xff55
	TLM marker value. More...
#define	J2K_MS_PLM   0xff57
	PLM marker value. More...
#define	J2K_MS_PLT   0xff58
	PLT marker value. More...
#define	J2K_MS_PPM   0xff60
	PPM marker value. More...
#define	J2K_MS_PPT   0xff61
	PPT marker value. More...
#define	J2K_MS_SOP   0xff91
	SOP marker value. More...
#define	J2K_MS_EPH   0xff92
	EPH marker value. More...
#define	J2K_MS_CRG   0xff63
	CRG marker value. More...
#define	J2K_MS_COM   0xff64
	COM marker value. More...
#define	J2K_MS_EPC   0xff68
	EPC marker value (Part 11: JPEG 2000 for Wireless) More...
#define	J2K_MS_EPB   0xff66
	EPB marker value (Part 11: JPEG 2000 for Wireless) More...
#define	J2K_MS_ESD   0xff67
	ESD marker value (Part 11: JPEG 2000 for Wireless) More...
#define	J2K_MS_RED   0xff69
	RED marker value (Part 11: JPEG 2000 for Wireless) More...
#define	J2K_MS_SEC   0xff65
	SEC marker value (Part 8: Secure JPEG 2000) More...
#define	J2K_MS_INSEC   0xff94
	INSEC marker value (Part 8: Secure JPEG 2000) More...

Typedefs
typedef enum J2K_STATUS	J2K_STATUS
	Values that specify the status of the decoding process when decoding the main header. More...
typedef enum T2_MODE	J2K_T2_MODE
	T2 encoding mode. More...
typedef struct opj_stepsize	opj_stepsize_t
	Quantization stepsize. More...
typedef struct opj_tccp	opj_tccp_t
	Tile-component coding parameters. More...
typedef struct opj_tcp	opj_tcp_t
	Tile coding parameters : this structure is used to store coding/decoding parameters common to all tiles (information like COD, COC in main header) More...
typedef struct opj_cp	opj_cp_t
	Coding parameters. More...
typedef struct opj_j2k	opj_j2k_t
	JPEG-2000 codestream reader/writer. More...

Enumerations
enum	J2K_STATUS {   J2K_STATE_MHSOC = 0x0001, J2K_STATE_MHSIZ = 0x0002, J2K_STATE_MH = 0x0004, J2K_STATE_TPHSOT = 0x0008,   J2K_STATE_TPH = 0x0010, J2K_STATE_MT = 0x0020, J2K_STATE_NEOC = 0x0040, J2K_STATE_ERR = 0x0080 }
	Values that specify the status of the decoding process when decoding the main header. More...
enum	T2_MODE { THRESH_CALC = 0, FINAL_PASS = 1 }
	T2 encoding mode. More...

Functions
Exported functions
opj_j2k_t *	j2k_create_decompress (opj_common_ptr cinfo)
	Creates a J2K decompression structure. More...
void	j2k_destroy_decompress (opj_j2k_t *j2k)
	Destroy a J2K decompressor handle. More...
void	j2k_setup_decoder (opj_j2k_t *j2k, opj_dparameters_t *parameters)
	Setup the decoder decoding parameters using user parameters. More...
opj_image_t *	j2k_decode (opj_j2k_t *j2k, opj_cio_t *cio, opj_codestream_info_t *cstr_info)
	Decode an image from a JPEG-2000 codestream. More...
opj_image_t *	j2k_decode_jpt_stream (opj_j2k_t *j2k, opj_cio_t *cio, opj_codestream_info_t *cstr_info)
	Decode an image form a JPT-stream (JPEG 2000, JPIP) More...
opj_j2k_t *	j2k_create_compress (opj_common_ptr cinfo)
	Creates a J2K compression structure. More...
void	j2k_destroy_compress (opj_j2k_t *j2k)
	Destroy a J2K compressor handle. More...
void	j2k_setup_encoder (opj_j2k_t *j2k, opj_cparameters_t *parameters, opj_image_t *image)
	Setup the encoder parameters using the current image and using user parameters. More...
char *	j2k_convert_progression_order (OPJ_PROG_ORDER prg_order)
	Converts an enum type progression order to string type. More...
opj_bool	j2k_encode (opj_j2k_t *j2k, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info)
	Encode an image into a JPEG-2000 codestream. More...

Detailed Description

The JPEG-2000 Codestream Reader/Writer (J2K)

The functions in J2K.C have for goal to read/write the several parts of the codestream: markers and data.